CN102977900B - Device and method for measuring pressure data of coke oven gas collector - Google Patents

Abstract

The invention relates to the field of a coke oven, and in particular relates to a device and a method for measuring pressure data of a coke oven gas collector, and the device comprises measuring points, and is characterized in that 3 or more odd measuring points are arranged, one of the measuring points is arranged on a position on which the middle of the gas collector is connected with a gas absorbing pipe, and the other two measuring points are symmetrically and uniformly distributed at two sides of the central point of the gas collector. The measuring result of each of the measuring points is averaged and weighted, and an average value obtained by fitting the various measuring points represents the pressure of the entire gas collector; and real time and automatic regulation of a pressure regulation system, a bleeding automatic ignition system and an air blower suction force regulation system of the gas collector is realized depending on the pressure. In comparison with the prior art, the invention has the beneficial effects that the problem of fluctuation of the measuring point pressure values due to different gas outputs of the coke oven is fundamentally solved; a coke oven data communication system (DCS) is used for programming and transmitting an accurate calculating result to the bleeding automatic ignition system and the air blower control system, to better control the pressure of the gas collector to be stable.

Description

A kind of coke oven collecting main pressure data measurement unit and method

Technical field

The present invention relates to coke oven field, particularly coke oven collecting main pressure data measurement unit and the method for different coke pushing string orders and firehole number in the top dress coke oven type of furnace and the tamping coke furnace type of furnace.

Background technology

Regulation of Coke Oven Collecting Mains is one of important regulative mode ensureing coke oven stably manufactured, be prevent that coke oven from smoldering with the important means of changing the normal work of runoff yield journey, so play an important role in coking production.In design in the past, on whole section of effuser, only get a measuring point, represent the pressure of whole effuser, and by variable valve, carry out on this basis the automatic adjusting of effuser.

When carrying out coke pushing at different fireholes, coke oven coalings when operation and coke oven in different cokings during the stage, because the gas production rate of coke oven is different, the force value that causes the pressure-measuring-point of single-point also causes fluctuation thereupon, a certain point pressure value can not represent the pressure of whole section of effuser within the whole turnover time, such metering system shows that the pressure surge of whole section of effuser is very large, also may cause because pressure is excessive the flase operation of effuser diffusion system, cause and produce disorder simultaneously.

Summary of the invention

The object of this invention is to provide a kind of coke oven collecting main pressure data measurement unit and method, by coke oven DCS systems programming and will be accurately calculation result send to and diffuse ignition system and blast blower control system, fundamentally address the above problem, better control the pressure of effuser.

In order to achieve the above object, the present invention adopts following technical scheme to realize:

A kind of coke oven collecting main pressure data measurement unit, comprise measuring point, the number that arranges of this measuring point is 3 or 3 above odd numbers, and one of them is arranged on the position of the middle part connection air suction pipe of effuser, and other measuring points are arranged in the both sides of the central point of effuser symmetrically and evenly.

Described measuring point is positioned at the position of 2 or 3 fireholes in distance set tracheae two ends.

Use a kind of coke oven collecting main pressure data measuring method of said apparatus, measuring result to each measuring point averages weighting, by the mean value after each measuring point matching, represented the pressure of whole effuser, and realize on this basis collecting main pressure regulation system, diffuse automatically regulating in real time of igniting automatic relief system and gas blower suction regulation system.

When described average weighted is processed, the weights of certain measuring point can be 0.

Described average weighted is processed and is comprised three kinds of computation schemas, is respectively: real-time mode, cyclic pattern and manual mode; Real-time mode is that the value parameter of all pressing of each measuring point participation the Fitting Calculation changes in real time according to the observed value before this point; Cyclic pattern is that all pressures value parameter of each measuring point participation the Fitting Calculation remains unchanged within certain cycle; Manual mode be each measuring point of artificially adopting within this for some time according to the good behaviour in for some time participate in the Fitting Calculation all press value parameter as in the future fixing all pressures value parameter.

Compared with prior art, the invention has the beneficial effects as follows: multi-measuring point pressure average weighted treatment process in coke oven collecting main, fundamentally solved because the gas production rate of coke oven is different, and the measuring point force value fluctuation problem causing, by coke oven DCS systems programming and will be accurately calculation result send to and diffuse ignition system and blast blower control system, can control better the pressure-stabilisation of effuser, prevent from causing because pressure is excessive the flase operation of effuser diffusion system, to the stably manufactured of coke oven, provide assurance.

Accompanying drawing explanation

Fig. 1 is the embodiment of the present invention one measuring point distributed architecture schematic diagram;

Fig. 2 is the embodiment of the present invention two measuring point distributed architecture schematic diagram.

In figure: 1-measuring point 2-effuser 3-upcast 4-coke oven 5-diffuses igniting automatic relief system 6-gas blower suction regulation system

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:

As Fig. 1, it is a kind of coke oven collecting main pressure data measurement unit of the present invention embodiment mono-measuring point distributed architecture schematic diagram, the number that arranges of measuring point 1 is three, one of them is arranged on the position of the middle part connection air suction pipe of effuser 2, other measuring points are arranged in the both sides of the central point of effuser 2 symmetrically and evenly, be positioned at the position of 2 or 3 fireholes in distance set tracheae two ends, effuser 2 is connected with coke oven 4 through upcast 3.As Fig. 2, a kind of coke oven collecting main pressure data measurement unit of the present invention embodiment bis-measuring point distributed architecture schematic diagram, the number that arranges of measuring point 1 is five, one of them is arranged on the position of the middle part connection air suction pipe of effuser 2, other measuring points are arranged in the both sides of the central point of effuser 2 symmetrically and evenly, and effuser 2 is connected with coke oven 4 through upcast 3.

A kind of coke oven collecting main pressure data measuring method of the present invention, coke oven DCS system averages weighting to the measuring result of each measuring point, by the mean value after each measuring point matching, represented the pressure of whole effuser, and realize on this basis the adjusting automatically in real time that collecting main pressure regulates and diffuses igniting automatic relief system 5 and gas blower suction regulation system 6.

When average weighted is processed, it is all virtual value that not all measuring point must be worth, and three the measuring point situations of take are example, may three measuring points be all effective measuring point, and also may only have two measuring points is effective measuring points, and certain point wherein does not participate in calculating, and its weights are 0.

If 1 P of two side-draws at effuser center ₂, effuser center pressure tap is P ₁, have:

P ₂=P ₁+ΔP

This Δ P is the P for requiring both ₂all pressures value parameter of point, the value of Δ P can, according to sampled value repeatedly, by method of least squares, be calculated as follows:

First defined function:

F(ΔP)=Σ(P ₁-P′ ₁) ²

P wherein ₁for P ₂to P ₁the match value of point pressure, has:

P′ ₁=P ₂-ΔP

F(ΔP)+Σ(P ₁-P ₂+ΔP) ²

The value of Δ P should meet F (Δ P) and get minimum value, F (Δ P) is differentiated, and make derivative equal zero, and has:

2Σ(P ₁-P ₂+ΔP)=0

So:

ΣΔP=(ΣP ₂-ΣP ₁)

If sampling number is to have for n time:

ΔP=(ΣP ₂-ΣP ₁)/n

Average weighted of the present invention process in main algorithm be that each measuring point all presses the setting of value parameter, according to the difference of sample mode, comprise three kinds of computation schemas, be respectively: real-time mode, cyclic pattern and manual mode; Real-time mode is that the value parameter of all pressing of each measuring point participation the Fitting Calculation changes in real time according to the observed value before this point; Cyclic pattern is that all pressures value parameter of each measuring point participation the Fitting Calculation remains unchanged within certain cycle; Manual mode be each measuring point of artificially adopting within this for some time according to the good behaviour in for some time participate in the Fitting Calculation all press value parameter as in the future fixing all pressures value parameter.

In embodiment 1, measuring point number is 3, and the situation of 5 pressure taps can be by that analogy, and concrete calculation procedure is as follows:

1) set sampling period T _adoptwith measuring point number;

2) determine operating mode, in real time, the cycle or manual;

3) under real-time mode, first select each sampling number n that participates in iteration, calculation formula is as follows:

ΔP ₂=(ΣP′ ₂-ΣP′ ₁)/n

ΔP ₃=(ΣP′ ₃-ΣP′ ₁)/n

Wherein: P ₂the sampled value that represents the second point past, Σ P ₂represent the second point past sampled value sum of first n time, Σ P ₁represented before past first the sampled value sum of n time, Σ P ₃represent thirdly pass by the sampled value sum of first n time, all press value parameter Δ P ₂with Δ P ₃when finishing, upgrades once in each sampling period.Again by formula:

$\stackrel{\‾}{P_2}=P_2-\mathrm{\Δ}{P}_2$

$\stackrel{\‾}{P_3}=P_3-\mathrm{\Δ}{P}_3$

$\stackrel{\‾}{P_1}=P_1$

Wherein: P ₂the real-time pressure value that represents second point, P ₁represent the real-time pressure value of first, P ₃represent real-time pressure value thirdly.

both be the real-time all pressures value of second point,

both be thirdly real-time all pressures value.

4) under fixed cycle pattern, first the sampling number n that all presses value parameter to calculate in the length T of selection cycle and participation each cycle, each cycle finishes the front all pressures value parameter that starts to calculate next cycle, calculates while all pressing value parameter, each sampling triggers once-through operation, and operational formula is as follows:

ΔP′ ₂=ΔP′ ₂+P′ ₂-P′ ₁

ΔP′ ₃=ΔP′ ₃+P′ ₃-P′ ₁

Wherein: P ₂represent this sampled value of second point, P ₁represent first this sampled value, P ₃represent thirdly this sampled value, Δ P ₂with Δ P ₃be intermediate variable, in each cycle after repetitive operation n time, by formula:

ΔP ₂=ΔP′ ₂/n

ΔP ₃=ΔP′ ₃/n

Obtain all pressing value parameter Δ P ₂with Δ P ₃.All press value parameter Δ P ₂with Δ P ₃in one-period, remain unchanged.Again by formula:

$\stackrel{\‾}{P_2}=P_2-\mathrm{\Δ}{P}_2$

$\stackrel{\‾}{P_3}=P_3-\mathrm{\Δ}{P}_3$

$\stackrel{\‾}{P_1}=P_1$

Calculate in real time all pressure values

with

.P wherein ₁represent the real-time pressure value of first, P ₂the real-time pressure value that represents second point, P ₃represent real-time pressure value thirdly.

5) under manual mode, choose a time period, by formula:

ΔP ₂=(ΣP′ ₂-ΣP′ ₁)/n

ΔP ₃=(ΣP′ ₃-ΣP′ ₁)/n

Calculate fixing all pressures value parameter Δ P ₂with Δ P ₃.Σ P wherein ₁be illustrated in this time period all sampled value sums of interior first, Σ P ₂be illustrated in all sampled value sums of second point in this time period, Σ P ₃be illustrated in all sampled value sums thirdly in this time period, n is the total sampling number in the time period for this reason.Again by formula:

$\stackrel{\‾}{P_2}=P_2-\mathrm{\Δ}{P}_2$

$\stackrel{\‾}{P_3}=P_3-\mathrm{\Δ}{P}_3$

$\stackrel{\‾}{P_1}=P_1$

Calculate in real time all pressure values

with

.P wherein ₁represent the real-time pressure value of first, P ₂the force value that represents second point, P ₃represent real-time pressure value thirdly.

6) weighted value Q ₁, Q ₂, Q ₃calculating, for the weighted value of first, do as judge, if

$\stackrel{\‾}{P_1}>\frac{\stackrel{\‾}{P_1}+\stackrel{\‾}{P_2}+\stackrel{\‾}{P_3}}{2}$

Q ₁=0, otherwise Q ₁=1.For the weighted value of second point, do as judged, if

$\stackrel{\‾}{P_2}>\frac{\stackrel{\‾}{P_1}+\stackrel{\‾}{P_2}+\stackrel{\‾}{P_3}}{2}$

Q ₂=0, otherwise Q ₂=1.For weighted value thirdly, do as judged, if

$\stackrel{\‾}{P_3}>\frac{\stackrel{\‾}{P_1}+\stackrel{\‾}{P_2}+\stackrel{\‾}{P_3}}{2}$

Q ₃=0, otherwise Q ₃=1.

7) calculating of the effuser real-time pressure P that multiple spot is surveyed, by formula:

$P=\frac{Q_1\stackrel{\‾}{P_1}+Q_2\stackrel{\‾}{P_2}+Q_3\stackrel{\‾}{P_3}}{Q_1+Q_2+Q_3}$

Real-time pressure P delivers to respectively collecting main pressure regulation system, diffuse igniting automatic relief system and gas blower suction regulation system to regulate in real time.

Claims (1)

1. a coke oven collecting main pressure data measuring method, is characterized in that, comprises following content:

1) 3 or 3 above odd number measuring points are set, one of them is arranged on the position of the middle part connection air suction pipe of effuser, and other measuring points are arranged in the both sides of the central point of effuser symmetrically and evenly; Described measuring point is positioned at the position of 2 or 3 fireholes in distance set tracheae two ends;

2) measuring result of each measuring point is averaged to weighting, by the mean value after each measuring point matching, represented the pressure of whole effuser, and realize on this basis collecting main pressure regulation system, diffuse automatically regulating in real time of igniting automatic relief system and gas blower suction regulation system;

3), when described average weighted is processed, the weights of certain measuring point can be 0;

4) described average weighted is processed and is comprised three kinds of computation schemas, is respectively: real-time mode, cyclic pattern and manual mode; Real-time mode is that the value parameter of all pressing of each measuring point participation the Fitting Calculation changes in real time according to the observed value before this point; Cyclic pattern is that all pressures value parameter of each measuring point participation the Fitting Calculation remains unchanged within certain cycle; Manual mode be each measuring point of artificially adopting within this for some time according to the good behaviour in for some time participate in the Fitting Calculation all press value parameter as in the future fixing all pressures value parameter.

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