KR200216590Y1 - Perforation discrimination device for turbine exciter air cooler cooling tube - Google Patents

Abstract

The present invention relates to a hole discrimination device of an air cooler cooling tube in a turbine exciter of a generator. The check opening 102 is installed on the outer wall of the exciter protection housing 9 to provide an air cooler 22a through the checker 102. Cooling tube 22f makes it possible to visually check the pore state and check rods b ₁ , b ₂ , b ₃ and check rods securely between the air coolers 22a at the bottom of the sump 23. b ₁ ′, b ₂ ′, b ₃ ′) are fixedly installed with check rod support plates 111a and 11b, bolts 112a and nuts 112b, and the main power switch SW ₁ and the sub power switch SW ₂ . , Power Relay (R _X ), Power Relay Switch (S _X ), Reset Switch (SW _R ), Check Switch (SW _C ), Operation Relay (R _O ), Operation Relay Switch (S _O ), Cab Alarm Relay ( R _B ), the cab alarm relay switch (S _B ) and the buzzer (BZ) of the alarm circuit (BC) is the check rod (b ₁ , b ₂ , b ₃ , b ₁ ', b ₂ ', b ₃ ' Connected to) Perforation of each tube can be detected quickly and accurately, which prevents the coolant from scattering due to the perforation of the cooling tube and prevents damage to peripheral devices. It has the advantage of preventing operation delays.

Description

Perforation discrimination device for turbine exciter air cooler cooling tube

The present invention relates to a pore discriminating device of a turbine exciter air cooler cooling tube for determining the pore state of a turbine exciter air cooler cooling tube that manages high temperature air generated in an exciter of a generator during operation of a power plant. .

In general, the power generation equipment receives a pressure of 130 kg / cm 2 and steam of 538 ° C. from the boiler 1 through the high pressure steam supply line 2, as shown in FIG. 1 schematically illustrating the circulation system of the power generation equipment. After rotating (4), the low pressure turbine (6) is rotated through the overcross line (5) with a pressure of 20 kg / cm < 2 > and steam at 538 [deg.] C. and then discharged to the condenser (12) through the steam outlet (10). .

In the condenser 12, the steam discharged from the steam outlet 10 flows the seawater supplied from the seawater pump 14 through the tube in the condenser 12, thereby allowing heat exchange and cooling through the tube. Through 15).

At this time, the steam cooled in the condenser 12 is reduced in volume, the generated non-condensable gas is discharged to the atmosphere, the vacuum pump 11 in the condenser 12 to form a vacuum of about 760mmhg in the condenser 12 ) Is installed.

The water condensed in the condenser 12 is supplied to the boiler 1 through the water supply pump 13 again and reheated in the boiler 1 to repeat the circulation process supplied to the turbine.

Through this process, the high-pressure turbine (4) and the low-pressure turbine (6), which rotates at a high speed of 3600 RPM, rotates the generator (8) and the exciter (9 ') connected to the same shaft. Power is generated in the generator 8 by the excitation power of).

In such a power generation facility, the configuration of a conventional exciter and a cooling system shows that when the high pressure turbine 4 and the low pressure turbine 6 are rotated by the supply of steam, as shown in the cross-sectional view of FIG. The exciter 9 'is also rotated, and at this time, the excitation power source from the giver magnetic device 25 is supplied to the exciter 28 to generate alternating current, and the generated alternating current power is supplied from the exciter 28 to the rotary rectifier ( 21) and converted to direct current. Therefore, the excitation power converted into direct current from the rotary rectifier 21 is supplied to the generator 8 to generate power in the generator 8. As described above, the core parts of the power generation equipment, that is, the grant magnetic device 25, the exciter 28, and the rotary rectifier 21 have a configuration installed at the shaft end of the turbine shaft so as to be directly connected to the generator 8 shaft.

Therefore, the exciter device, which is composed of the core parts of the power generation equipment, causes a failure when dust enters continuously or the temperature rises, so that hot air generated inside the direction of the arrow shown in FIG. 2 passes between the elements 22e. An air cooler 22a is provided to cool. However, since seawater is used as the cooling medium of the air cooler 22a, the following problems occur. That is, the conventional exciter is a structure that checks the tube wave hole inside the exciter with the naked eye by opening the door (100c), as shown in Figure 3, when the coolant flows into the tube wave hole, the coolant flows out of the air cooler (22a) Opening the door (100c) and visually confirming that there is a high possibility that a safety accident will occur in the power plant rotating at 3600 RPM and there is a problem that the power plant is stopped due to a delay in the action time when the tube breaks. .

The present invention has been made in view of the above situation to solve the problems of the conventional air percolator discriminating device of the air exciter cooling tube turbine turbine, and quickly detect the leakage of coolant due to the air hole of the air cooler cooling tube with a check rod to the cab It is an object of the present invention to provide a sheet discrimination device for a turbine exciter air cooler cooling tube that generates an alarm.

1 is a view schematically showing a circulation system of a power generation facility.

2 is a cross-sectional view of a conventional exciter and its cooling system.

3 is a diagram illustrating the inspection of the perforation of a conventional cooling tube.

Figure 4 is a check when the hole of the cooling tube according to the present invention.

5 is a side perspective view of an air cooler employing a hole discrimination apparatus of the present invention cooling tube.

6 is a front perspective view of an air cooler employing the hole discrimination apparatus of the present invention cooling tube.

7 is a configuration diagram of the alarm circuit according to the present invention.

* Explanation of symbols for main parts of the drawings

1: boiler 2: high pressure steam supply line

3: high pressure turbine casing 4: high pressure turbine

5: overcross line 6: low pressure turbine

7: low-pressure turbine casing 8: generator

9: Female flag protection housing 9 ': Female flag

10 steam outlet 11 vacuum pump

12: condenser 13: feed water pump

14: seawater pump 15: drainage

20: bearing 21: rotary rectifier

22a: air cooler 22b: zinc plate

22c: exhaust plug 22d: air cooler chamber

22e: Element 22f: Cooling Tube

23: sump 24: air cooler support

25: Gigi magnetic 26a: Cooling water (sea water) supply valve

26b: cooling water (sea water) outlet valve 27: cooling water (sea water) discharge valve

28: excitement 29: concrete floor

100a: pin 100b: feldspar

100c: door 101: screw

102: check hole 103: glass plate

111a, 11b: Check rod support tube 112a: Bolt

112b: Nut 113: cable

114: Discrimination device panel b ₁ , b ₂ , b ₃ , b ₁ ', b ₂ ', b ₃ ': check rod

SW ₁ : Main power switch SW ₂ : Sub power switch

SW _R : Reset switch SW _C : Check switch

L ₁ , L ₂ , L _R , L _C : Lamp R _X , R _O , R _B : Relay

S _X , S _O , S _B : Relay switch T: Transformer

BZ: Cab Alarm Buzzer

Perforation discriminating device of the present invention cooling tube for achieving the above object is installed through the check hole 102 on the outer wall of the exciter protection housing 9 through the check hole 102 through the cooling tube 22f of the air cooler 22a The check rod (b ₁ , b ₂ , b ₃ ) and the check rod (b ₁ ′, b ₂ ) are secured to the bottom of the water collecting tank 23 with the air cooler 22a securely interposed therebetween. ', b ₃ ') are fixedly installed with the check rod support plates 111a and 11b, the bolts 112a and the nuts 112b, and the main power switch SW ₁ , the sub power switch SW ₂ , and the power relay R _X. ), Power Relay Switch (S _X ), Reset Switch (SW _R ), Check Switch (SW _C ), Operation Relay (R _O ), Operation Relay Switch (S _O ), Cab Alarm Relay (R _B ), Cab Alarm It is made by connecting the alarm circuit (BC) consisting of a relay switch (S _B ) and a buzzer (BZ) to the check rod (b ₁ , b ₂ , b ₃ , b ₁ ', b ₂ ', b ₃ ') It features.

Hereinafter, the operation of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is an installation state of the inspection port is installed in the exciter protection housing according to the present invention, Figure 5 is a side perspective view of the air cooler showing the installed state of the breaker discriminating device of the turbine cooler air cooler cooling tube of the present invention, Figure 6 5 is a front perspective view of the air cooler shown in FIG. 7, and FIG. 7 is a configuration diagram of the alarm circuit according to the present invention. As shown in FIG. 4, the excitation may be performed to allow the presence or absence of coolant leakage of the cooling tube from the outside of the exciter protection housing 9. The groove on the outer wall of the protective housing (9) is attached to the glass plate 103 and the check hole 102 and then fixed with a screw (101).

Therefore, it is possible to check the cooling water outflow of the cooling tube through the check opening 102 without the inconvenience of having to open the door (100c) and check the cooling water outflow state of the cooling tube directly with the naked eye as in the prior art, so that the power plant rotates at high speed. Safety accidents can be prevented.

In addition, as shown in FIGS. 5 and 6, the check rods b ₁ , b ₂ , b ₃ , and (b ₁ ′, b) are disposed on both sides of the air cooler 22a so as to be adjacent to the bottom of the sump 23. ₂ ', b ₃ '). The installation of the check rod check rods (b ₁ , b ₂ , b ₃ , b ₁ ', b ₂ ', b ₃ ') is performed on the three check rods (b ₁ , b ₂ , b ₃ ) to put the check rods (b ₁ , b ₂ , b ₃ ) slightly off the floor and then fix it with bolts 112a and nuts 112b. Connect the cable 113 to one end of the check rods (b ₁ , b ₂ , b ₃ , b ₁ ', b ₂ ', b ₃ ') and connect it to the alarm circuit (BC) in the discriminator panel (114). .

Therefore, in FIG. 7, when the main power switch SW ₁ and the sub power switch SW ₂ are turned on to operate the inventive cooling tube hole discrimination device, the power is turned on by the main power switch SW ₁ . The relay R _X operates to turn on the power relay switch S _X. Accordingly, the power stepped down by the transformer T is applied to the alarm circuit BC. At this time, since the reset switch SW _R is kept in the ON state, the cooling tube 22f is broken and the cooling water is accumulated at the bottom of the sump 23, and the check rods b ₁ and b ₂ or ( When any one of b ₂ , b ₃ ), (b ₁ ′, b ₂ ′), (b ₂ ′, b ₃ ′) is connected, the power supplied to the alarm circuit BC is connected to the sub power switch SW _2. ) Is applied to the operation relay R _O via a check rod and reset switch SW _R connected with cooling water. Therefore, since the operation relay (R _O ) is operated to turn on the operation relay switch (S _O ), the cab alarm relay (R _B ) is activated so that the cab alarm relay switch (SB) is turned on so that the buzzer (BZ) rings and the cooling tube ( 22f) will alert the ball.

Here, the reset switch SW _R serves as a function of arbitrarily stopping the alarm of the buzzer BZ, and the check switch SW _C is used to check the operation of the alarm circuit BC. When SW _C ) is turned on, the buzzer (BZ) sounds, and when it is turned off, the buzzer (BZ) does not sound, and the alarm circuit (BC) can operate normally. Otherwise, the alarm circuit (BC) is broken. It is judged as a state.

The present invention, which acts as described above, can quickly and accurately detect the perforations of the cooling tube to prevent the cooling water from being scattered by the perforations of the cooling tube, and to prevent damage to the peripheral devices. There is an advantage of preventing large equipment accidents and delays in operation of steel mills due to tube breakage.

Claims (1)

The inspection hole 102 is installed on the outer wall of the exciter protection housing 9 so that the hole tube 22f of the air cooler 22a can be visually checked through the inspection unit 102, and the Check rods b ₁ , b ₂ , b ₃ and check rods b ₁ ′, b ₂ ′, b ₃ ′ with the air cooler 22a interposed securely on the bottom of the check rod support plates 111a, 11b. And bolt 112a and nut 112b, and the main power switch SW ₁ and the sub power switch SW ₂ , the power relay R _X , the power relay switch S _X , and the reset switch SW Alarm consisting of _R ), check switch (SW _C ), operation relay (R _O ), operation relay switch (S _O ), cab alarm relay (R _B ), cab alarm relay switch (S _B ) and buzzer (BZ) The breaker of the turbine exciter air cooler cooling tube characterized in that the circuit (BC) is made by connecting the check rod (b ₁ , b ₂ , b ₃ , b ₁ ', b ₂ ', b ₃ ').