KR200235006Y1 - Seawater leak detection device - Google Patents

Abstract

The present invention relates to a multi-seawater leak detection device improved to significantly improve the operation rate of power generation facilities by minimizing facility corrosion by shortening the seawater leakage detection time significantly and preventing excessive pollution of seawater, and shortening maintenance time. .

The present invention is a power generation facility having a plurality of pumps and a plurality of outlet pipes for collecting the plurality of condensed in each of the two compartments to the lower side of the condenser to circulate into the power generation facility, the branch pipe is withdrawn from the plurality of outlet pipes to the valve and the chemical injector A seawater leak detection apparatus of a multiplier which is connected to the multiplier side through a flowmeter and a conductivity detector to continuously detect the inflow of seawater in the multiplier, wherein the detection is located at the bottom of the seawater tube in any one compartment of the multiplier And a plurality of collecting pipes are drawn out from the detection port and connected to the rear end of the cutoff valve of the branch pipe. The plurality of collecting pipes are equipped with a suction pump and a plurality of blocking valves, and a plurality of mixing ports are provided in the detection port. The instruments are mounted side by side and the mixing mechanism is spring loaded into the cylindrical mixing port. Provided is a multi-stage seawater leak detection device having a mixing plate supported to uniformly mix a plurality of falling to the detection port.

Description

Seawater leak detection device of the condenser.

The present invention relates to a device for early detection of seawater leakage from condensers in power generation equipment, and more particularly, by shortening the seawater leakage detection time significantly shortly to prevent excessive contamination of seawater to minimize equipment corrosion. In addition, the present invention relates to a multi-seawater leak detection device of the multiplier, which is improved to greatly improve the operation rate of power generation facilities by reducing maintenance time.

In general, as shown in FIG. 1, the power generation facility 100 includes a turbine body 102 and a generator body 104, and includes a condenser 110 for condensing steam discharged from the turbine 102. In addition, the condenser 110 extends a plurality of seawater tubes 112 for condensing steam therein, as shown in FIG. 2, and the condenser 110 has two inner plate members 114. The compartments are divided into four compartments 115a and 115b, and a plurality of seawater tubes 112 extend to cross the compartments 115a and 115b. In addition, a plurality of pumps 118 and a plurality of outlet pipes 120 are formed at the lower side of the condenser 110 to collect the condensed condensed in the two compartments 115a and 115b into one and circulate them into the power generation facility 100. Equipped.

The condenser 110 has a problem in that a plurality of seawater tubes 112 are ruptured due to corrosion, etc. during use, and contaminate the condensate by flowing out of the condenser 110 into the seawater. This is because the plural salts contain salts to corrode various equipment and pipes through which the plural flows, thereby promoting aging of power generation facilities and inhibiting smooth operation, so that the outflow of seawater should be detected quickly and the outflow of seawater should be blocked.

3 shows a seawater leak detection device 130 of the condenser 110 according to the related art. This is the branch pipe 132 is drawn out from the plurality of outlet pipe 120 and passes through the shut-off valve 134 and the chemical injector 136, the condenser 110 through the flow meter 138 and the conductivity detector 140 in succession It is connected to the side. Accordingly, in order to detect whether seawater is introduced into the plurality of seawater by the conventional seawater leak detection device 130, the plurality of water is collected from the plurality of outlet pipes 120 through the branch pipe 132, and the medicine injector 136 is used. The chemicals of a cation exchange resin of a certain amount are injected into the plurality, and the plurality of chemicals are passed through the flow meter 138 to be supplied to the conductivity detector 140 and then refluxed to the condenser 110.

In this process, the conductivity detection system 140 detects a plurality of supplied conductivity, which is 0.25 μV / cm 2 or less in normal operation, but some seawater is introduced in the plurality so that the concentration of chlorine ion is approximately 0.01. When the amount is increased to about ppm, the plurality of conductivity becomes 1.9 μV / cm 2, which is about 10 times higher. Therefore, once the plurality of conductivity exceeds 0.3μV / cm2 or more is considered to be the inflow of seawater, once the conductivity of 0.25μV / cm2 is reached, the conductivity detector 140 emits an alarm sound, the operator It is to take the action to block the inflow of seawater by operating or stopping the power plant 100 so that the conductivity of 0.5μV / cm2 or less can be operated.

As described above, when the inflow of seawater into the plurality of the conductivity detection system 140 is detected through conductivity, the operator blocks one of the two compartments 115a and 115b inside the condenser 110 and generates power generation equipment 100. The output is adjusted to maintain the output of 40 to 60% of the specified value. In this state, the power generation equipment is opened and closed to re-inspect the plurality of conductivity flowing out of the currently operating compartment. Compared with the plural conductivity when operating by using the two previous compartments 115a and 115b, it is judged that seawater flows into the closed compartment in the lower case, and the compartment in operation when the conductivity is high. It is determined that the inflow of wastewater through the operation stops the operation of the compartment and executes the leak test of the seawater tube 112 to block the inflow of seawater.

However, in such a wastewater leakage test method, the time required for closing one of the two compartments 115a and 115b of the condenser 110 and lowering the output of the power generation facility 100 is about 2 hours. More specifically, it takes about 30 minutes to reduce the power generation output to 40 to 60% when seawater leaks, and it takes about 90 minutes to perform the single-sided operation at such low power, and excessive maintenance work is required. In other words, the output of the power generation equipment, and the operation rate is lowered accordingly.

In addition, as the outflow inspection time of the seawater takes a long time, a large amount of seawater flows into the power generation facility 100, causing internal corrosion of the power generation facility, causing premature aging of the facility and damage to the facility. It was to have several problems.

The present invention is to solve the conventional problems as described above, the purpose is to significantly reduce the seawater leakage detection time to prevent excessive pollution of the seawater to minimize the corrosion of the facility, shorten the maintenance time to greatly increase the operation rate of the power plant It is to provide a seawater leak detection device of the condenser 110 improved to improve.

1 is a detailed configuration diagram of a general generator,

2 is a cross-sectional view of the condenser equipped with a generator,

3 is a block diagram of a seawater leak detection device of the condenser according to the prior art,

4 is a block diagram of a seawater leak detection device of the condenser according to the present invention,

5 is a detailed view of the mixing mechanism provided in the seawater leak detection device of the condenser according to the present invention,

Figure 6 is a block diagram showing a mounting state of the mixing mechanism provided in the seawater leak detection device of the condenser according to the present invention in a plan view,

<Explanation of symbols for the main parts of the drawings>

10 .... Detection port 15 .... Multiple collection tube

17 .... Circulation pump 19 .... Shut-off valve

20 .... Mixer 22 .... Mixing Port

25 ... spring 27 ... mixing plate

110 ... Avenger 140 ... Conductivity Detector

In order to achieve the above object, the present invention, in the power generation equipment having a plurality of pumps and a plurality of outlet pipes for circulating the plurality of condensed in each of the two compartments to the lower side of the condenser into a power generation facility, to the plurality of outlet pipes A seawater leak detection device of a multiplier, which is connected to the multiplier side through a flow meter and a conductivity detector, is continuously connected to a multiplier side through a flow meter and a conductivity detector to detect a seawater inflow. Has a detection port located at the bottom of the seawater tube, a plurality of collecting pipes are drawn out from the detection port and connected to the rear end of the branch valve, and the plurality of collecting pipes are equipped with a suction pump and a plurality of blocking valves. A plurality of mixing mechanisms are mounted side by side in the detection port, the mixing mechanism The water leakage detecting apparatus of the condenser, characterized by evenly mixing a plurality Sikkim which fall to the sensing port equipped with a mixing plate which is supported by a spring into the mixing port of the type according to maryeonham.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

Seawater leak detection device 1 of the condenser according to the present invention is located in the lower portion of the seawater tube 112 in any one of the compartments (115a) (115b) of the condenser (110) as a whole as shown in FIG. The detection port 10 has a long funnel-shaped cross-section body 12, as shown in FIGS. 4 and 5, with a plurality of holes in the body 12. (12a) is formed, the plurality of collecting pipe 15 is drawn out to extend to the outside of the condenser 110 at the lower center, the plurality of collecting pipe 15 is the rear end of the shut-off valve 134 of the branch pipe 132 It is connected. In addition, the plurality of collecting pipes 15 has a structure in which a suction pump 17 and a plurality of shutoff valves 19 are mounted at an intermediate point.

On the other hand, a plurality of mixing mechanisms 20 are mounted side by side in the detection port 10, the mixing mechanism 20 is a mixing plate which is supported by a spring 25 in the cylindrical mixing port 22 ( 27) to uniformly mix the plurality of falling to the detection port 10, which is fixed to the lower end of the spring 25 inside the cylindrical mixing port 22, the disk of the disc 25 The mixing plate 27 is fixed to have a structure that is elastically supported by the spring (25). In addition, a plurality of holes 22a are formed on the mixing port 22 so that the plurality of drops falling into the mixing port 22 are discharged through the holes 22a toward the lower side.

On the other hand, in the plurality of collecting pipes 15, the bypass pipe 35 is drawn out from the discharge header 110a from which the plurality of outflows from the two compartments 115a and 115b are collected and drawn out, so that the front side shut-off valve 19 Is connected to the plurality of collecting pipe 15 at the rear side of the), and has a shut-off valve 35a in the middle portion.

Reference numeral 40 is a drain pipe, and 45 is a various shutoff valve.

The seawater leak detection device 1 of the present invention configured as described above has the shutoff valve 19 of the multiple collection pipe 15 closed and the shutoff valve 134 of the branch pipe 132 during the operation of the normal power generation equipment 100. In the open state, a plurality of continuous seawater detection operations are performed.

Accordingly, the plurality of drugs are passed through the branch pipe 132 to the chemical injector 136, and a certain amount of chemical of the cation exchange resin is injected into the plurality, and the plurality of chemicals are passed through the flow meter 138 to be supplied to the conductivity detector 140. It is refluxed to the condenser 110 again. In addition, the conductivity detector 140 continuously detects a plurality of supplied conductivity, and the conductivity detector 140 generates an alarm when a plurality of detected conductivity is detected to be 0.25 μV / cm 2 or more. When such an alarm occurs, the operator closes the shutoff valve 134 of the branch pipe 132, opens the plurality of shutoff valves 19 of the plurality of collecting pipes 15, and then operates the circulation pump 17 to collect the plurality of pieces. A plurality of suctions of the plurality of pipes through the pipe (15), and through the chemical injector 136 of the branch pipe 132, and through the flow meter 138 to supply the plurality of conductivity to the conductivity detector (140). Then, the plurality of conductivity is measured as the conductivity detector 140 and the measured plurality is recycled to the condenser 110. In this process, the mixing port 22 connected to the front end of the plurality of collecting tubes 15 is mounted on the lower side of the seawater tube 112 in any one compartment of the condenser 110 to exchange heat with the seawater tube 112. The mixing mechanism 20 mounted inside the mixing port 22 in the process of receiving a plurality of falling and falling down through the plurality of holes 22a due to a plurality of impacts falling to the mixing plate 27 The spring 25 elastically swings the mixing plate 27 up and down, and the shaking of the mixing plate 27 serves to uniformly mix the plurality of temporarily stagnant in the mixing port 22 and seawater. will be. That is, when seawater flows out into the plurality of seawater tubes 112 of the compartments 115a and 115b in which the mixing port 22 is located, the mixing port 22 is simultaneously dropped into the mixing port 22, and the mixing port 22 is mixed. It is to be uniformly mixed by the mixing plate 27 is shaken up and down in the inside and is provided to the conductivity detection system 140 through the plurality of collecting pipes (15).

In addition, the plurality of sea water mixed in this way is uniformly mixed in the process of being sucked by the circulation pump 17 can provide an accurate measurement value when the conductivity detection by the conductivity detector 140.

When the seawater flows out of the compartment 115b of the condenser 110 in which the mixing port 22 is located in the plurality of detection processes, the outflow of the seawater has a plurality of conductivity values measured by the compartment 115b of the branch pipe 132. It will be detected to be higher than the plurality of conductivity values flowing out of the two compartments (115a) and 115b through, so that the operator can easily estimate that the seawater outflow from the compartment (115b) side where the mixing port 22 is located It is. However, if the seawater flows out from the compartment 115a where the mixing port 22 is not located, the plurality collected through the plurality of collecting pipes 15 from the compartment 115b where the mixing port 22 is located. The conductivity of will be detected lower than the plurality of conductivity values flowed out of the two compartments 115a and 115b through the branch pipe 132. Therefore, in this case, the worker can easily estimate that the outflow of sea water occurs in the compartment 115a in which the mixing port 22 is not located.

And, if outflow of seawater occurs in both of the compartments 115a and 115b, the measured value of the conductivity detector 140 will not be lowered below 0.25 μV / cm 2, in which case the compartments are sequentially All of (115a) and (115b) should be repaired.

When the seawater outflow is inspected as described above and the repair work of the seawater tube 112 ends, the shutoff valves 19 of the plurality of collecting pipes 15 are closed, and the shutoff valve 134 of the branch pipe 132 is opened. The plurality of conductances flowing out through the two compartments 115a and 115b are continuously detected.

On the other hand, when the power generation facility 100 does not operate in the seawater leak detection device 1 of the present invention as described above, it is to measure the plurality of conductivity collected in the interior of the condenser 110, which is the bypass pipe 35 Open the shutoff valve 35a of the pump, close the plurality of sampling pipes 15 and the shutoff valve 19 of the branch pipe 132 to operate the circulation pump 17, and supply the plurality to the conductivity detector 140. Inside). Therefore, even when the power generation equipment 100 does not operate, a plurality of conductivity can be measured.

According to the present invention as described above, when the seawater flows into the plurality of interior to increase the plurality of conductivity by the conductivity detection system 140, which is to close one compartment (115a) (115b) of the condenser 110 Easily operate any compartment 115a by simply operating the shut-off valve 134 of the branch pipe 132 and the shut-off valve 19 of the plurality of collecting pipes 15 without performing a single closing operation and lowering the output of the power generation facility to 40 to 60%. In 115b, it is easy to know whether the seawater is discharged into a plurality of interiors.

Therefore, as in the prior art, the work time required for single-ply operation and lowering the output of the power generation facility becomes unnecessary, which significantly shortens the seawater leakage detection time, thereby preventing excessive pollution of seawater, minimizing facility corrosion, and shortening maintenance time. The improved effect is obtained to greatly improve the operation rate of the equipment.

Claims (1)

In the power generation facility 100 having a plurality of pumps 118 and a plurality of outlet pipes 120 for collecting and circulating a plurality of condensed in each of the two compartments 115a and 115b to the lower side of the condenser 110, the plurality of The branch pipe 132 is drawn out from the outlet pipe 120 and passes through the valve 134 and the chemical injector 136, and is continuously connected to the condenser 110 through the flow meter 138 and the conductivity detector 140. The seawater leak detection apparatus of the multiplier which detects the inflow of seawater in the plurality, the detection port 10 located in the lower portion of the seawater tube 112 in any one compartment (115a) (115b) of the multiplier (110) And a plurality of collecting pipes 15 are drawn out from the detection port 10 and connected to a rear end of the shutoff valve 134 of the branch pipe 132, and the plurality of collecting pipes 15 have a suction pump 17 and a plurality of them. Shut-off valves 19 are mounted, while in the detection port 10 a plurality of mixing mechanisms 20 are arranged side by side. And the mixing mechanism 20 has a mixing plate 27 supported by the spring 25 in the cylindrical mixing port 22 to uniformly mix the plurality of drops falling into the detection port 10. Seawater leak detection device of the condenser.