CN104048316B - A kind of air feed system being used for the auxiliary boiler of oil tanker based on analog multiplier - Google Patents
A kind of air feed system being used for the auxiliary boiler of oil tanker based on analog multiplier Download PDFInfo
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- CN104048316B CN104048316B CN201410222752.2A CN201410222752A CN104048316B CN 104048316 B CN104048316 B CN 104048316B CN 201410222752 A CN201410222752 A CN 201410222752A CN 104048316 B CN104048316 B CN 104048316B
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Abstract
The invention discloses a kind of based on analog multiplier for the air feed system of the auxiliary boiler of oil tanker, described air feed system includes analog multiplier, differential regulator, the big device of choosing, adder, comparator, pi regulator, frequency converter and differential pressure transmitter, analog multiplier with select big device to be connected and analog multiplier and differential regulator are connected with selecting big device by adder, selecting big device to be connected with pi regulator by comparator with differential pressure transmitter, pi regulator is connected with frequency converter；Tolerance signal is the input signal of differential regulator, and distributive value signal is the input signal of analog multiplier.The conversion of described system data in time, improves the dynamic property of system, makes Wind-oil ratio remain comparatively ideal state, saved fuel oil, improved environment, alleviate the knot carbon degree of burner hearth and flue path, improve the efficiency of heat exchange；The use of analog multiplier makes boiler air feed system have the interface of more preferable access automatic control system.
Description
Technical field
The present invention relates to ship domain, particularly to a kind of air feed being used for the auxiliary boiler of oil tanker based on analog multiplier
System.
Background technology
The auxiliary boiler of oilburg is the visual plant of watercraft engine room.It produce steam except be used for fuel Heating,
The outer Cargo Oil to be heated such as the diet of crewman, domestic water is provided, drives Cargo Oil Pump and other deck machinery.It
It is in round-the-clock running status.Realizing the auxiliary boiler of oilburg energy-conservation is that energy-conservation important of oilburg is arranged
Execute.In order to ensure that fuel oil burns completely and obtains higher economy, boiler to have one in combustion control processes
Individual optimal Wind-oil ratio, through measuring, it is desirable to be approximated to quadratic relationship between air pressure and distributive value.Mesh
Before, the method that wind pressure control system realizes is typically with function generator.Function generator output and distributive value
Square proportional air pressure signal.This signal regulates machine through HT selector, pi regulator and air door
The wind supply quantity of burner hearth is controlled by structure, thus realizes the Optimal Control of Wind-oil ratio.Function generator is air-operated apparatus
Part, is converted into the air pressure signal proportional to distributive value square by the air pressure signal of reaction distributive value actual value defeated
Going out, the reliability of its work, accuracy will directly affect boiler combustion and control process, and therefore function generator is
Very important control parts.But there is following several respects shortcoming in function generator:
1. atmospheric control management difficulty is big: bellows bursts is leaked gas, spray nozzle clogging, the abrasion of feedback cam,
Difficult zeroing, difficult tune range etc.；
2. atmospheric control delay of response, not in time.The most necessarily there is the few gentle heavy wool of oily many gas in reaction
Few phenomenon, causes the waste of fuel oil, causes the instability of steam pressure simultaneously, and system can be in constantly tune
During joint, affect the stability of system.Fuel oil can not fully burn and make burner hearth and flue knot carbon serious, shadow again
Ring heat exchanger effectiveness.
3. air pressure signal cannot be directly used to monolithic processor control system.
Summary of the invention
Goal of the invention: it is an object of the invention to provide a kind of based on analog multiplier for the deficiencies in the prior art
Air feed system for the auxiliary boiler of oil tanker, it is to avoid the atmospheric control management difficulty of prior art is big, pneumatic
Control system delay of response and not in time, air pressure signal cannot be directly used to the defect of monolithic processor control system.
Technical scheme: in order to realize goal of the invention, the invention discloses one based on analog multiplier for oil tanker
The air feed system of auxiliary boiler, described air feed system includes analog multiplier, differential regulator, the big device of choosing, addition
Device, comparator, pi regulator, frequency converter and differential pressure transmitter, analog multiplier with select big device to be connected and
Analog multiplier and differential regulator are connected with selecting big device by adder, select big device and differential pressure transmitter pass through than
Relatively device is connected with pi regulator, and pi regulator is connected with frequency converter；Tolerance signal is the input of differential regulator
Signal, distributive value signal is the input signal of analog multiplier；Wherein, the big device of described choosing is by two operation amplifiers
Device composes in parallel.
As preferably, in order to realize goal of the invention further, the distributive value signal of described system passes through analogue multiplication
Device obtains distributive value-analog multiplier signal, and tolerance signal obtains tolerance-differential regulation letter by differential regulator
Number, distributive value-analog multiplier signal as selecting the input signal of big device, distributive value-analog multiplier signal and
Tolerance-differential regulation signal by after adder as the input signal selecting big device；Select the output signal of big device
After being compared by adder with differential pressure transmitter signal, input is to pi regulator, and differential pressure transmitter signal is wind
Road and the pressure difference signal in boiler；The output signal of pi regulator inputs to frequency converter, and frequency converter is used for controlling
Rotation speed of fan.
As preferably, in order to the error making analog multiplier cause because of factors such as imbalance, drift or noises is allowing
In the range of, described analog multiplier is Control of Voltage four-quadrant integrated analog multiplier.
Beneficial effect: compared with prior art, the conversion of described system data in time, improves system to the present invention
Dynamic property, makes Wind-oil ratio remain comparatively ideal state, has saved fuel oil, improved environment, alleviated
The knot carbon degree of burner hearth and flue path, improves the efficiency of heat exchange；The use of analog multiplier makes boiler supply
General mood Ore-controlling Role becomes electric-control system, and the signal of system transfers is the signal of telecommunication, utilizes microcomputer to realize intelligence for boiler
Energyization controls and intelligent monitoring, warning are provided convenience；The most described system architecture is simpler, cost more
Low and more conducively maintenance management.
Accompanying drawing explanation
Fig. 1 is the structural representation of analog multiplier used herein；
Fig. 2 is the structural representation that the present invention has the oil tanker auxiliary boiler air feed system of analog multiplier.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described.
As it is shown in figure 1, fuel regulator valve is connected with analog multiplier by oil mass transmitter, analog multiplier and
Select big device to be connected and analog multiplier is connected with selecting big device by adder with differential regulator, select big device and difference
Pressure transmitter is connected with pi regulator by comparator, and pi regulator is connected with frequency converter.Fuel regulator valve leads to
Crossing the size of tolerance Signal Regulation distributive value, the size of distributive value is converted to distributive value by oil mass transmitter and believes
Number, distributive value signal is voltage signal.Then its voltage signal is carried out by distributive value signal by analog multiplier
Square operation, the output signal after its square operation is inputted to selecting big device by analog multiplier, described analogue multiplication
Device uses Control of Voltage four-quadrant integrated analog multiplier as shown in Figure 1.Meanwhile, tolerance signal passes through differential
Part obtains tolerance differential signal, and the output signal of tolerance differential signal and analog multiplier is by defeated after adder
Entering to selecting in big device, the big device of described choosing is made up of two operational amplifiers.Output signal and the differential pressure of selecting big device become
The output signal of device is sent relatively to deliver to pi regulator, the output signal of described differential pressure transmitter by comparator
It it is the voltage signal in air channel and pot pressure drop in furnace.The output signal input of pi regulator is to frequency converter, by becoming
Frequently the output signal of device controls the rotating speed of blower fan, thus reaches the ratio control of air quantity and distributive value.
Explanation to disclosed above-described embodiment, makes those skilled in the art be capable of or uses
The amendment team those skilled in the art of above-described embodiment are apparent from, institute herein by the present invention
The General Principle of definition can be real in other embodiments without departing from the spirit or scope of the present invention
Existing.Therefore, the present invention is not restricted to embodiment illustrated herein, and is to fit to and principles disclosed herein
The widest range consistent with features of novelty.
Claims (2)
1. the air feed system being used for the auxiliary boiler of oil tanker based on analog multiplier, it is characterized in that, described air feed system includes analog multiplier, differential regulator, the big device of choosing, adder, comparator, PI adjuster, frequency converter and differential pressure transmitter, analog multiplier with select big device to be connected and analog multiplier and differential regulator are connected with selecting big device by adder, selecting big device to be connected with PI adjuster by comparator with differential pressure transmitter, pi regulator is connected with frequency converter；Tolerance signal is the input signal of differential regulator, and distributive value signal is the input signal of analog multiplier；Wherein, the big device of described choosing is composed in parallel by two operational amplifiers,
The distributive value signal of described system obtains distributive value-analog multiplier signal by analog multiplier, tolerance signal obtains tolerance-differential regulation signal by differential regulator, distributive value-analog multiplier signal as selecting the input signal of big device, distributive value-analog multiplier signal and tolerance-differential regulation signal by adder as the input signal selecting big device；The output signal selecting big device is inputted to pi regulator after being compared by comparator with differential pressure transmitter signal, and differential pressure transmitter signal is air channel and the pressure difference signal in boiler；The output signal of pi regulator inputs to frequency converter, and frequency converter is used for controlling rotation speed of fan；The fuel regulator valve size by tolerance Signal Regulation distributive value, the size of distributive value is converted to distributive value signal by oil mass transmitter, and distributive value signal is voltage signal；Its voltage signal is carried out square operation by analog multiplier by distributive value signal, and the output signal after its square operation is inputted to selecting big device by analog multiplier.
2. it is used for the air feed system of the auxiliary boiler of oil tanker as claimed in claim 1 based on analog multiplier, it is characterised in that described analog multiplier is Control of Voltage four-quadrant integrated analog multiplier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410222752.2A CN104048316B (en) | 2014-05-23 | 2014-05-23 | A kind of air feed system being used for the auxiliary boiler of oil tanker based on analog multiplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410222752.2A CN104048316B (en) | 2014-05-23 | 2014-05-23 | A kind of air feed system being used for the auxiliary boiler of oil tanker based on analog multiplier |
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| Publication Number | Publication Date |
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| CN104048316A CN104048316A (en) | 2014-09-17 |
| CN104048316B true CN104048316B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410222752.2A Active CN104048316B (en) | 2014-05-23 | 2014-05-23 | A kind of air feed system being used for the auxiliary boiler of oil tanker based on analog multiplier |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202899A (en) * | 2015-10-23 | 2015-12-30 | 上海市离心机械研究所有限公司 | Hot air circulation system of centrifugal dewatering and drying integrated machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2805021A (en) * | 1956-06-27 | 1957-09-03 | Bell Telephone Labor Inc | Electronic analogue multiplier |
| JPS6046336B2 (en) * | 1977-12-12 | 1985-10-15 | 横河電機株式会社 | Boiler combustion control device |
| JPS58168810A (en) * | 1982-03-29 | 1983-10-05 | Hitachi Ltd | Combustion air control system for pulverized coal boiler |
| JPS62131115A (en) * | 1985-12-03 | 1987-06-13 | Mitsubishi Electric Corp | Burning control device for low oxygen in exhaust gas of boiler |
| EP1715579B1 (en) * | 2005-04-19 | 2010-03-10 | Alcatel Lucent | Analogue multiplier |
| CN102722684B (en) * | 2012-06-05 | 2015-03-11 | 无锡市晶源微电子有限公司 | Analog multiplier |
| CN204141617U (en) * | 2014-05-23 | 2015-02-04 | 江苏海事职业技术学院 | A kind of air feed system being used for the auxiliary boiler of oil tanker based on analog multiplier |
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2014
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Effective date of registration: 20180423 Address after: 116000 Dalian Province, Zhongshan District, No. Green Street Street, No. 16 Patentee after: Dalian Wuzhou Marine Boiler Engineering Co., Ltd. Address before: Jiangning District of Nanjing City, 211199 Gezhi Road No. 309 in Jiangsu Province Patentee before: Jiangsu Maritime Institute |
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Effective date of registration: 20201231 Address after: 116000 Port Industrial Zone, sanlibao, puwan New District, Dalian City, Liaoning Province Patentee after: Dalian shipbuilding industry Ocean Engineering Co.,Ltd. Address before: No.16, Zhuqing street, Zhongshan District, Dalian, Liaoning 116000 Patentee before: DALIAN WUZHOU MARINE BOILERS & ENGINEERING Co.,Ltd. |