JP2000248906A - Generator room structure in power generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the structure of a generator room as a whole, and suppress the cost required. SOLUTION: Since a generator room part 6 and a turbine room part 4 are communicated with each other by a communication duct 13 feeding air to the side of a turbine room part 4 from the generator room part 6 by communicating the opening 11 of the generator room part 6 side with the opening 12 of the turbine room part 4 side, the whole structure can be made simpler as compared with the current structure, wherein an intake duct and an exhaust duct are provided for the turbine room part 4 and the generator room part 6 respectively, cost can thereby be suppressed low.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power generating room structure in a power generating apparatus including a turbine room in which a gas turbine is installed and a generator room in which a generator is installed.

[0002]

2. Description of the Related Art As shown in FIG.
0 is a turbine chamber 42 in which the gas turbine 41 is installed.
And a generator room structure 45 including a generator room section 44 in which a generator 43 is provided. In the power generation chamber structure 45, the turbine chamber 42 and the generator chamber 44
Adjacent via a partition 46, the intake ducts 48, 49 and exhaust ducts 50, 51 are provided on the top wall 47 of the turbine chamber 42 and the generator chamber 44, for example.
Are provided in the intake ducts 48 and 49 or the exhaust ducts 50 and 51, respectively.
Is provided. In the drawing, reference numeral 54 denotes a filter provided in each of the intake ducts 48 and 49 and the exhaust ducts 50 and 51. Although not shown, a silencer is provided in each of the intake ducts 48, 49 and the exhaust ducts 50, 51.

According to the power generation chamber structure 45, by driving the blowing fans 52, 53, the air is taken in from the intake ducts 48, 49 and exhausted from the exhaust ducts 50, 51. And generator room 44
The ventilation in each is performed.

[0004]

In the power generation chamber structure 45 of the power generation apparatus 40, intake ducts 48 and 49 and exhaust ducts 50 and 51 are provided in the turbine chamber 42 and the generator chamber 44, respectively. Ducts 48, 49
Since the exhaust ducts 50 and 51 are provided with silencers, respectively, the entire power generation chamber structure is complicated and the cost is high.

[0005] Therefore, an object of the present invention is to provide a power generation chamber structure in a power generation device that can solve the above-mentioned problems.

[0006]

Means for Solving the Problems The object of the present invention is to provide a turbine room including a gas turbine therein and a generator room including a generator for generating electric power by driving the gas turbine. The chamber section and the generator chamber section are configured to be adjacent to each other with a partition therebetween, and an intake path is provided on the generator chamber section side, and the generator chamber section and the turbine chamber section have an opening on the generator chamber section side. An exhaust path that communicates with the opening on the turbine chamber side and that communicates with the communication passage that supplies air from the generator chamber side to the turbine chamber side, and that exhausts air in the turbine chamber section on the turbine chamber side. A supply fan for supplying air from the generator room side to the turbine room side is provided,
The communication passage is provided with a backflow prevention device for preventing air from flowing back from the turbine chamber side to the generator chamber side.

Further, as a backflow prevention device, the inside of the communication passage is
A backflow prevention plate guided by a guide in a direction to open and close the opening, an electromagnet for switching the backflow prevention plate to an open state or a closed state, and a power supply unit for turning on and off the electromagnet; The unit is connected to the drive unit of the supply fan such that the backflow prevention plate closes the opening when the power supply to the supply fan is turned off.

[0008] In the above configuration, by driving the gas turbine provided in the turbine chamber, power is generated by the generator provided in the generator chamber. Further, by driving the supply fan, air is taken from the generator room side to the turbine room side through the communication passage from the generator room side opening to the turbine room side opening, and the air in the turbine room is exhausted. Is done. Also, when the power supply to the supply fan is turned off, the power supply unit of the backflow prevention device is turned off, the magnetic force of the electromagnet disappears with this, the backflow prevention plate closes the opening, and the inside of the turbine chamber is closed. It prevents gas-containing air from flowing back to the generator room.

Alternatively, the pressure sensor detects when the pressure on the turbine chamber side becomes larger than the pressure on the generator chamber side.
This signal is output to the drive unit of the backflow prevention device, and by the drive of the drive unit, the backflow prevention plate rotates to close the opening, the backflow prevention plate closes the opening, and the air containing gas in the turbine chamber portion. From flowing back to the generator room.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. First, a power generation chamber structure in a power generation device according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a power generating chamber structure 1 according to a first embodiment of the present invention includes, in a structural box 2, a turbine chamber section 4 in which a gas turbine 3 is provided, and a gas turbine 3.
A generator room 6 internally provided with a generator 5 that generates electric power by driving the turbine is provided, and the turbine room 4 and the generator room 6 are configured to be adjacent to each other with a partition wall 7 interposed therebetween.

An intake duct 9 is provided on the top wall 8a on the side of the generator room 6, and an intake fan 10 is provided on the intake duct 9. The generator room 6 and the turbine room 4 generate electricity. The opening 11 on the machine room 6 side and the opening 12 on the turbine room 4 side communicate with each other so that the turbine room 4
An exhaust duct 14 that communicates with a communication duct 13 protruding from the structural box body 2 that supplies air to the side and that exhausts air in the turbine chamber 4 is provided on the top wall surface 8b on the turbine chamber 4 side. The duct 14 is provided with a discharge fan 15 for discharging air from the turbine chamber 4, the communication duct 13 is provided with a ventilation fan 24, and the intake duct 9, the communication duct 13 and the exhaust duct 14 are provided with a filter 16. Is provided. And the suction fan 1
0, the exhaust fan 15 and the ventilation fan 24 constitute a supply fan.

As shown in FIG. 2, the communication duct 13
A backflow prevention device 17 is provided for preventing air from flowing back from the turbine chamber 4 to the generator chamber 6.
The backflow prevention device 17 includes a metal backflow prevention plate 18 that opens and closes the opening 12 on the turbine chamber 4 side in the communication duct 13, a guide 19 that guides the backflow prevention plate 18,
The backflow prevention plate 18 includes an electromagnet 20 for switching the opening 12 on the turbine chamber section 4 side to an open state or a closed state, and a power supply (a backup power supply is used) 21 for turning the electromagnet 20 on and off.

A plurality of guides 19 (four in the figure) are provided between a receiving seat surface 22 formed on the outer peripheral portion of the opening 12 on the turbine chamber portion 4 side and an upper back surface of the communication duct 13. A corner of the backflow prevention plate 18 is inserted into each guide 19, and a frame-shaped packing 23 that is detachably seated on the receiving seat surface 22 is attached to the bottom of the backflow prevention plate 18. In the above configuration, the generator 5 is driven by driving the gas turbine 3.
Is driven to generate power. Also, the suction fan 10,
When the ventilation fan 24 and the exhaust fan 15 are driven, air is sucked into the generator room 6 from the intake duct 9, cools the inside of the generator room 6, and the air passes through the communication duct 13 and flows into the turbine room 4. Is cooled, and then discharged from the exhaust duct 14. At this time, the electromagnet 20 is in the ON state by the supply of electricity from the power supply 21, and therefore, the electromagnet 20 is attracting the backflow prevention plate 18 and the turbine chamber 4
The side opening 12 is open.

When the intake fan 10, the ventilation fan 24, and the discharge fan 15 stop due to an accident (for example, a power failure), the flow of air as described above stops. On the other hand, when the suction fan 10, the ventilation fan 24, and the discharge fan 15 are stopped, the supply of electricity from the power supply 21 connected to these driving units to the electromagnet 20 is also controlled. As a result, the attracting force of the electromagnet 20 is lost, the backflow prevention plate 18 falls along the guide 19 due to its own weight, the packing 23 sits on the receiving seat surface 22, and the opening 12 on the turbine chamber 4 side prevents the backflow. It is closed by the plate 18. This prevents the air in the turbine chamber 4 containing gas from flowing back to the generator chamber 6, and even when the suction fan 10, the ventilation fan 24, and the exhaust fan 15 restart driving. , Turbine room 4
It is possible to prevent the air containing gas from igniting and to ensure safety.

According to the first embodiment of the present invention,
The generator room section 6 and the turbine room section 4 communicate with the opening 11 on the generator room section 6 side and the opening 12 on the turbine room section 4 side, and air flows from the generator room section 6 side to the turbine room section 4 side. The structure is simpler than the conventional case where the intake duct and the exhaust duct are provided in each of the turbine chamber section 4 and the generator chamber section 6, so that the cost is reduced. Can be suppressed.

Next, a second embodiment of the present invention will be described with reference to FIGS. The power generation chamber structure 1 according to the second embodiment of the present invention includes a continuous plan view L-shaped partition wall 7 at the center of a structural box (soundproof package) 2 including a turbine chamber section 4 and a generator chamber section 6. Are provided, and project from the top wall 8 of the structural box 2 to the turbine room 4 side and the generator room 6
Ducts 13 are provided on one side and the other side of the partition wall 7 so as to be separated from each other. The lower part of the communication duct 13 on the turbine chamber 4 side and the lower part of the generator chamber 6 side are respectively provided with the turbine chamber sections 4. , Opening 1 opening to generator room 6
The ventilation fan 30 extends over an intermediate portion of the communication duct 13, that is, an upper extension 32 of the partition 7, and a silencer 31 is disposed above the ventilation fan 30.

Each communication duct 13 has a turbine chamber 4
A backflow prevention device 17 for preventing air from flowing back from the side to the generator room section 6 side is provided.
A backflow prevention plate 25 for opening and closing the opening 12 on the turbine chamber 4 side; a pressure sensor 26 for detecting and comparing the pressure on the generator chamber section 6 side and the pressure on the turbine chamber section 4 side; However, when the pressure on the turbine chamber section 4 side becomes higher than the pressure on the generator chamber section 6 side, the motor section (driving section) for rotating the backflow prevention plate 25 to drive the backflow prevention plate 25 to close the opening 12. ) 27.

In the above configuration, one of the ventilation fans 30
Is rotated in the forward direction and the other ventilation fan 30 is rotated in the opposite direction, so that exhaust and intake are performed simultaneously. However, since each ventilation fan 30 is spaced apart, exhaust and intake Interference is small. In addition, by controlling the amount of intake air to the turbine chamber 4 side to be larger than the amount of intake air to the generator chamber 6 side, the turbine chamber 4
The flow of gas-containing air from the side to the generator room 6 side is prevented. Further, by increasing the amount of exhaust gas on the generator room 6 side, the inflow of air containing gas from the turbine room 4 side to the generator room 6 side is prevented.

When the pressure sensor 26 detects that the pressure on the turbine chamber 4 side has increased, this signal is output to the motor 27 for rotating the backflow prevention plate 25, and the motor 27 is driven. Then, the backflow prevention plate 25 is rotated to close the opening 12 on the turbine chamber section 4 side, thereby preventing the air in the turbine chamber section 4 containing gas from flowing back to the generator chamber section 6 side. , Safety can be ensured.

Further, unlike the related art, since one silencer 31 is not provided in the intake duct and the exhaust duct, only one is disposed at the intermediate portion of the communication duct 13.
The configuration is simpler than in the related art, and the cost can be reduced. Next, a third embodiment of the present invention will be described with reference to FIG. The power generation room structure 1 according to the third embodiment of the present invention includes a turbine room portion 4 and a power generation room portion 6 on a top wall 8 of a structural box 2 including a turbine room portion 4 and a power generation room portion 6.
A plurality of recesses 35 (similar positions as the communication duct 13 in FIG. 4) are formed over each of the recesses. Each of the recesses 35 is provided with a communication duct 13 that communicates between the turbine chamber section 4 side and the generator chamber section 6 side. Openings 11 and 12 are formed in the lower part of the communication duct 13 on the turbine chamber part 4 side and the lower part of the generator chamber part 6 to open to the turbine chamber part 4 and the generator chamber part 6, respectively. A ventilation fan 30 is provided over an intermediate portion of the partition wall 7, that is, an upper extension 32 of the partition wall 7, and a silencer 31 is disposed above the ventilation fan 30. Other configurations are the same as those of the second embodiment.

In the third embodiment, similarly to the second embodiment, by rotating one ventilation fan 30 in the forward direction and rotating the other ventilation fan 30 in the opposite direction, the exhaust and intake air are reduced. Are performed at the same time, but since each ventilation fan 30 is arranged apart,
There is little interference between exhaust and intake. In addition, by controlling the amount of intake air to the turbine room 4 side to be larger than the amount of intake air to the generator room 6 side, gas from the turbine room 4 side to the generator room 6 side is included. It prevents inflow of air. Further, by increasing the amount of exhaust gas on the generator room 6 side, the inflow of air containing gas from the turbine room 4 side to the generator room 6 side is prevented.

When the pressure sensor 26 detects that the pressure on the turbine chamber section 4 side has increased, this signal is output to the motor section 27 for rotating the backflow prevention plate 25, and the motor section 27 is driven. Then, the backflow prevention plate 25 is rotated to close the opening 12 on the turbine chamber section 4 side, thereby preventing the air in the turbine chamber section 4 containing gas from flowing back to the generator chamber section 6 side. , Safety can be ensured.

Further, unlike the related art, the silencer 31 is not provided in the intake duct and the exhaust duct, and only one is disposed at the intermediate portion of the communication duct 13, so that
The configuration is simpler than in the related art, and the cost can be reduced.

[0024]

As is apparent from the above description, the present invention comprises a turbine room having a gas turbine therein and a generator room having a generator for generating electric power by driving the gas turbine. Part and the generator room part are configured to be adjacent to each other via a partition wall, an intake path is provided on the generator room part side, and the generator room part and the turbine room part are connected to the opening on the generator room part side and the turbine. An exhaust passage communicating with an opening on the chamber side to supply air from the generator chamber side to the turbine chamber side and communicating with the turbine chamber side is provided, and an exhaust path for exhausting air in the turbine chamber section is provided on the turbine chamber side. A supply fan is provided to supply air from the generator compartment to the turbine compartment, and a backflow prevention device is provided in the communication passage to prevent air from flowing back from the turbine compartment to the generator compartment. Supply fan stopped due to power outage And if, the opening is closed by the backflow prevention device, the air containing the gas turbine chamber side,
Backflow to the generator room 6 is prevented, and even when the supply fan resumes driving, it is possible to prevent the air containing gas from the turbine room from igniting, thereby ensuring safety. .

Further, since the generator chamber and the turbine chamber are communicated with each other through the communication path through the opening, the conventional configuration in which the intake duct and the exhaust duct are provided in the turbine chamber and the generator chamber, respectively. Therefore, the configuration can be simplified, and the cost can be kept low.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a power generation chamber structure in a power generation device according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing the configuration of the backflow prevention device.

FIG. 3 is a sectional view showing a power generation chamber structure in a power generation device according to a second embodiment of the present invention.

FIG. 4 is a schematic plan view of the same.

FIG. 5 is a sectional view showing a power generation chamber structure in a power generation device according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a power generation chamber structure in a conventional power generation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power generation room structure 2 Structure box 3 Gas turbine 4 Turbine room part 5 Generator 6 Generator room part 7 Partition wall 9 Intake duct 10 Intake fan 11 Opening 12 Opening 13 Communication duct 14 Exhaust duct 15 Discharge fan 17 Backflow prevention device 18 Backflow Prevention plate 19 Guide 20 Electromagnet 21 Power supply 22 Receiving seat surface 23 Packing 24 Ventilation fan

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F24F 7/06 F24F 7/06 B // H02K 7/18 H02K 7/18 Z (72) Inventor Koji Makino 1-7-89 Minami Kohoku, Suminoe-ku, Osaka-shi F-term in Hitachi Zosen Corporation (reference) 3L058 BE08 BG01 BG02 BG04 5H607 AA02 BB02 CC05 DD08 FF04 FF30

Claims (4)

[Claims] 1. A turbine room in which a gas turbine is provided, and a generator room in which a generator for generating electric power by driving the gas turbine is provided. The turbine room and the generator room are separated by a partition. And a suction chamber is provided on the generator room side, wherein the generator room and the turbine room are connected to the opening on the generator room side and the turbine. An exhaust passage communicating with an opening on the chamber side to supply air from the generator chamber side to the turbine chamber side is provided, and an exhaust path for exhausting air in the turbine chamber section is provided on the turbine chamber side. A supply fan for supplying air from the generator room side to the turbine room side; and a backflow prevention device for preventing the air from flowing back from the turbine room side to the generator room side in the communication path. In the power generator characterized by being provided Power room structure. 2. A backflow prevention device, wherein a backflow prevention plate guided by a guide in a direction to open and close the opening in the communication path, an electromagnet for switching the backflow prevention plate to an open state or a closed state, and A power supply unit for turning on and off the electromagnet, and the power supply unit is connected to a drive unit of the supply fan such that the backflow prevention plate closes the opening when the power supply to the supply fan is turned off. 2. The method according to claim 1, wherein
A power generation room structure in the power generation device according to the above. 3. A backflow prevention device as a backflow prevention device, a pressure sensor for detecting and comparing a pressure on a generator room side and a pressure on a turbine room side, and the pressure sensor includes a turbine. 2. The power generator according to claim 1, further comprising: a drive unit that drives the backflow prevention plate to close the opening when the pressure on the chamber side is greater than the pressure on the generator chamber side. Power generation room structure. 4. The power generation chamber structure in the power generation device according to claim 1, wherein a silencer is disposed in the communication passage.