METHOD OF CONTROLLING TURBINE EQUIPMENT AND TURBINE EQUIPMENT

• US 20110027066A1
• Filed: 03/27/2009
• Published: 02/03/2011
• Est. Priority Date: 03/28/2008
• Status: Active Grant

• Current Assignee: Mitsubishi Heavy Industries, Ltd., Pebble Bed Modular Reactor SOC Limited
• Original Assignee: Mitsubishi Heavy Industries, Ltd., Pebble Bed Modular Reactor SOC Limited
• Inventors: Kato, Makoto, Ono, Hitoi, Umaya, Masahide, Sonoda, Takashi, Fujii, Fuminori, Tochitani, Naoto
• Granted Patent: US 9,243,566 B2
• Time in Patent Office: Days
• US Class Current: 415/1
• CPC Class Codes: F01K 13/02 Controlling, e.g. stopping or starting
• CPC Class Codes: F02C 1/05 characterised by the type or source of heat, e.g. using nuclear or solar energy
• CPC Class Codes: F02C 1/10 Closed cycles
• CPC Class Codes: F02C 3/34 with recycling of part of the working fluid, i.e. semi-closed cycles with combustion products in the closed part of the cycle
• CPC Class Codes: F02C 7/26 Starting; Ignition
• CPC Class Codes: F02C 9/18 by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages F02C3/113 takes precedence
• CPC Class Codes: F05D 2260/85 Starting

Abstract

To provide a method of controlling a turbine equipment and a turbine equipment capable of carrying out a starting operation of controlling a load applied to a speed reducing portion while complying with a restriction imposed on an apparatus provided at a turbine equipment. The invention is characterized in including a temperature elevating step (S1) of elevating a temperature of a working fluid flowing to the turbine portion, a flow rate increasing step (S2) of increasing a flow rate of a working fluid bypassed from a delivery side to a suction side of the compressing portion when a temperature of the working fluid flowing to the turbine portion is elevated by a heat source portion, and a flow rate reducing step (S3) of reducing the flow rate of the bypassing working fluid after an elapse of a predetermined time period after increasing the flow rate of the bypassing working fluid.

Claims

1. A method of controlling a turbine equipment characterized by a method of controlling a turbine equipment including:

a compressing portion of compressing a working fluid;

a heat source portion of heating the compressed working fluid;

a turbine portion driven to rotate by the heated working fluid; and

a circulating flow path for circulating the working fluid at least among the compressing portion, the heat source and the turbine portion, the method comprising;

a temperature elevating step of elevating a temperature of the working fluid flowing to the turbine portion;

a flow rate increasing step of increasing a flow rate of the working fluid bypassed from a delivery side to a suction side of the compressing portion in elevating a temperature of the working fluid flowing to the turbine portion by the heat source portion; and

a flow rate reducing step of reducing the flow rate of the bypassed working fluid after an elapse of a predetermined time period after increasing the flow rate of the bypassed working fluid.

2. The method of controlling a turbine equipment according to claim 1, characterized by further comprising:

a first calculating step of calculating the flow rate of the bypassed working fluid in the flow rate increasing step and the flow rate reducing step based on an elapsed time period after starting to elevate the temperature of the working fluid;

a second calculating step of calculating a bypass flow rate necessary for preventing surging from being brought about in the compressor based on a pressure ratio between the suction side and the delivery side of the compressor, and the modified revolution number of the compressor calculated based on the temperature of the working fluid sucked to the compressor;

a selecting step of selecting the bypass flow rate having a larger flow rate from the bypass flow rates calculated by the first and the second calculating step; and

a flow rate controlling step of controlling the flow rate of the working fluid bypassed from the delivery side to the suction side of the compressing portion to the selected bypass flow rate.

3. A turbine equipment characterized by being provided with:

a compressing portion of compressing a working fluid;

a turbine portion driven to rotate by the working fluid;

a circulating flow path of circulating the working fluid at least between the compressing portion and the turbine portion;

a bypass flow path for bypassing the working fluid from a delivery side to a suction side of the compressing portion;

a flow rate controlling portion of controlling a flow rate of the working fluid flowing through the bypass flow path;

a motor of driving to rotate the compressing portion and the turbine portion by way of a speed reducing portion in starting; and

a control portion of carrying out the controlling method according to claim 1.