SU827814A1 - System for recording turbine element service life factors - Google Patents

Description

Power Meter 11; Resource Parameter Calculation Block 14 Oggal proportional to the value of the Resource Parameter at the time in question. This signal is applied to the inputs of blocks of 3, 4, 5 normalization of static modes, start-up and transitional modes. In the installed modes, the signal, which is given by the local energy source, is multiplied in block 3 of the normalization of the static modes by the variable coefficient, itz / nt, depending on the actual power of the turbine. At this time, there are no signals at the output of the normalization blocks 4 and 5.

8 Transition modes at the output of transient rationing block 5, a signal is generated, which is the product of the signal from block 14, calculating a pair: a meter of resource "a constant factor. At this time, there are no signals at the exit from the units of narmirovia 3 and 4. In the start-up process, at the output, from block 4, the start mode and the start mode are generated by a signal that is prapordial to the product of the signal from block 14 by a constant coefficient. At this time, there are no signals at the exit from the normalization blocks j and 5. C, Igni.ly from blocks of normalization 3, 4 (n 5 arrive at counters 6, 7 and 8 of the accumulation of static modes of transient modes and modes behind the scale, where continuous integral of these signals takes place in time. Signals of counters 6, 7 and 8 are stacked in the counter

9 total operating time, which provides an indication of the total output of the resource.

The calculation of the resource parameter (t) in the M block is performed in accordance with the following dependency

k, ji.

sum 1st, G

.-

m), 4g.

f (dn dr dt

. {T} -f, (N), j .. 0

., -

-f-o

dT dt

h

 - actual sum-mar, stresses in turbine blades;

a- - the limit of long-term strength

Paddle material; n is a signal proportional to the frequency of rotation of the turbine rotor;

T is a signal proportional to the temperature of the gas;

N is a signal proportional to the actual power of the turbine; fei and 2 are the coefficients.

The formation of a signal at the Output from block 3 of the rationing of static modes; My (t / 5) occurs in accordance with the following relationship:

Us kr, t.

k, (N), - 0

dT „

ABOUT

fine fu | NKTSyy% (yV) has the form of a range of operating modes. ФбрййрОййе signal at the output of block 5 of the normalization of the transitional regime iMOB (t / e) (Occurs in accordance with the dependence

dr

L const, Z - o and

About FH

TH (;, rS (j

AI

 Q

Z - 1 or

dt

where Z I is the start relay activation signal;

yb is the coefficient.

Formir-ov “no signal at the exit of bloM 4 Nf.Myrovaniya startup modes (Hi Yriskhodi In accordance with the dependence

f In canst, Z - 1

i /. /f7-t,.О, Z 0

where ki is the coefficient.

As a power meter 11 for gas, turbines can be used for all turbines. The pressure of air for compressed copioMiBbicokoro pressure (HPC), because the pressure} {e of air for HPC is a fairly close analogue of the power of a turbine.

Thus, the availability of a meter in the system of a power meter, a block of the derivative of gas temperature and a block of resource calculations has a positive effect, which means that the accuracy of determining the yield of the resource increases.

The use of this system will make it possible to increase the operating time of a power plant without the overhaul of its individual engines, due to the rational choice of their operating modes.

Fr p m u l a and 3 o b e te n u

A system for recording indicators of resource life-time development by turbine elements containing sensors for rotating frequency of the turbine rotor and gas temperature, blocks for normalizing static modes, start modes and transient modes connected via appropriate counters to a common operating time counter, and a start relay whose output is connected To blocks the normalization of transients and start-up modes, characterized in that, in order to improve the accuracy of determining the development of a resource, the system contains a power meter, a derivative block gas temperature, rotational speed derivative unit, and resource parameter calculation unit, to the inputs of which rotor speed sensors are connected

turbine and gas temperature, power meter, gas temperature derivative block and rotational frequency derivative block and output to the normalization, static modes, start-up and transient modes, the output of the gas temperature derivative unit is connected to the transient normalization unit and the normalization unit static modes, to another input of which a power meter is connected.

The source of information taken into account in the examination:

1. Copyright certificate of the USSR L 378910, cl. G 07 C 3/00, 1974.

Claims (1)

Claim A system for recording the indicators of production of resources by turbine elements, co827814 containing sensors for the rotational speed of the turbine rotor and gas temperature, units for normalizing static modes, starting modes and transient modes connected via common counters to a common running hours counter, and a start relay, the output of which is connected to transient rationing units launch modes and modes, characterized in that, in order to increase the accuracy of determining the resource output, the system contains a power meter, a derivative tempo block gas temperature, a derivative of the derivative speed, and a resource parameter calculation unit, to the inputs of which are connected sensors of the rotor speed of the turbine and gas temperature, a power meter, a derivative of the gas temperature and a derivative of the rotational speed, and the output to 5 static norming units modes, start-up modes and transient modes, the output of the derivative gas temperature unit is connected to the transient normalization unit and the static mode normalization unit, 10 which is connected to another input s power. Source of information taken into account during the examination: 15 1. USSR author's certificate No. 378910, cl. G 07 C 3/00, 1974.