METHOD FOR DETERMINING EXTINCTION TURBOMACHINE COMBUSTION CHAMBER Russian patent published in 2019 - IPC F02C9/46 

FIELD: engines and pumps.

SUBSTANCE: invention relates to gas turbine engines (GTE), and in particular to methods for determining the extinction of the combustion chamber of GTE, mainly ground installations, for example, on gas-rolling units. When implementing the method, measure the rotational speed n_hp rotor high pressure turbocharger, pressure P^*_k air behind the turbocharger, temperature T_T gases behind the turbine, determine the first time derivatives dn_hp/dt, dP_k*/dt, dT_T/dt and form the specified positive settings (dn_hp/dt)^extinction, (dP_k*/dt)^extinction, (dT_T/dt)^extinction, characterizing the extinction of the combustion chamber. Additionally measure the position of the fuel supply valve to the combustion chamber A_dk, determine the first time derivative of dA_dk/dt, form a predetermined positive setpoint value (dA_dk/dt)^extinction, characterizing the extinction of the combustion chamber, additionally determine the presence of a sign of maximum opening of the fuel supply valve to the combustion chamber and with simultaneous fulfillment of the conditions -(dn_hp/dt)>-(dn_hp/dt)^extinction, -(dP_k*/dt)>(dP_k*/dt)^extinction, -(dT_T/dt)>(dT_T/dt)^extinction and (dA_dk/dt)>(dA_dk/dt)^extinction or simultaneous fulfillment of conditions -(dn_hpdt)>(dn_hpdt)^extinction, -(dP_k*/dt)>(dP_k*/dt)^extinction, -(dT_T/dt)>(dT_T/dt)^extinction and sign of limiting the maximum opening of the fuel supply valve to the combustion chamber A^max_dk form a sign of extinction of the combustion chamber.

EFFECT: proposed method improves the reliability of the combustion chamber and the GTE as a whole.

1 cl, 1 dwg