KR200171326Y1 - Apparatus for automatically removing an alien substance using current of sea water - Google Patents

Abstract

The present invention prevents foreign substances contained in the seawater used as cooling water in the generator and the various power generating equipment coolers from entering the cooler, and automatically discharges them through the discharge pipe when a certain amount of foreign matter is collected. The present invention relates to an apparatus for automatically removing foreign substances using seawater flow rate, which improves the cooling efficiency by increasing the efficiency and improves the overall efficiency of the power plant.

The present invention is a washing water tank supplied with the wash water dispensed from the boost pump, a pair of spray pipes installed opposite to each other on the outer periphery of the washing tank, and the lower side is spaced so as to be in close contact with the spray pipes to the sea water supply pipe. Fixed truncated truncated cone-shaped filter, the foreign matter extractor which is provided in the hollow inside of the filter and the upper surface is fixed to the washing tub, and fixed to the lower side of the body of the foreign matter extractor to enable the foreign material extractor to rotate It consists of rotary blades to automatically block foreign substances in the seawater, and when foreign matter accumulates in the filter, it removes foreign substances adhering to the filter with high-pressure washing water and then discharges them automatically to improve the efficiency of equipment and productivity of maintenance work. It is to enable stable operation of the system.

Description

Automatic removal of foreign substances using seawater flow rate {APPARATUS FOR AUTOMATICALLY REMOVING AN ALIEN SUBSTANCE USING CURRENT OF SEA WATER}

The present invention relates to an apparatus for automatically removing foreign substances using the flow rate of seawater, and more particularly, to prevent foreign substances contained in seawater used as cooling water in the generator and various power generation equipments as coolant, and to prevent a certain amount of foreign substances from entering the cooler. When foreign matters are collected, it is automatically discharged through the discharge pipe to improve the cooling efficiency by increasing the purity of the cooling water, and also to the automatic removal of foreign substances using the seawater flow rate to improve the overall efficiency of the power plant. .

In general, power generation facilities use regenerative and reheat cycles to minimize the cost of power generation.

Regeneration and reheat cycles in the power plant require some of the steam that is rotated to be fed back to the feedwater heater so that the boiler does not have to replenish the additional feedwater.

Thus, steam condensed water generated during heat exchange between water supply temperature rise and feed water is recovered by a condenser, and high-temperature, high-pressure steam which rotates the high pressure, medium pressure, and low pressure turbines is finally condensed after cooling with the coolant in the condenser and recycled into water supply. I'm trying to.

The power plant equipped with a lot of such energy equipment is equipped with a relatively large number of coolers as an auxiliary equipment, the cooling medium of such a cooler is using the seawater with abundant flow rate and low cost of use as cooling water.

1 is a schematic view showing a conventional seawater supply apparatus and a device for cooling seawater associated with this, and a device for removing foreign matter contained in the seawater.

As shown in the figure, the seawater supply device is 30 mm or more in a rotary bar screen (ROTARY BAR SCREEN) (2) installed at the inlet of the seawater pump (4) of a large amount of suspended matter contained in the seawater flowing into the seawater intake (5) Remove the suspended matter first, and again remove foreign substances of 10 mm or more from the traveling screen (TRAVELLING SCREEN) (3), and the seawater filtered at a pressure of 0.6 ~ 0.7 kg / ㎠ in the sea water pump (4) Configured to feed).

The seawater for cooling supplied to each cooler installed in the power generation facility is removed from the seawater pipe 9, which is a flow path supplied to the condenser 1 after removing foreign matters from the rotary bar screen 2 and the traveling screen 3. Partly introduced into the seawater supply pipe (7) to finally remove the foreign matter in the fixed filter 20 of the mesh (MESH) 3mm.

Then, the water supplied to each cooler is heated through the heat exchange with the fluid in each cooler is discharged through the seawater discharge pipe (8) while rotating the low-pressure turbine (53) in the condenser (1) is discharged while heat exchange with the steam Into the seawater drainage pipe (17) of the seawater is discharged to the seawater drainage (6).

In this process, the seawater supplied to each cooler is removed from the rotary bar screen (2) and the traveling screen (3) with large particles and small particles in the fixed filter (20) installed in the seawater supply pipe (7) Although foreign substances are supposed to be removed, many kinds of foreign substances such as shellfish, shellfish and various kinds of suspended solids are not removed from the screens 2 and 3 and the filter 20, so that the tubes of each cooler are closed. Or the inner tube of the tube is damaged, so that the coolant fluid is heat-exchanged with the sea water, and is not supplied to the place of use.

In addition, the screen (2,3) installed in front of the sea water pump (4), when a large amount of foreign matter accumulates automatically by the drive motor filter device (2a, 3a) inside the screen (2,3) to filter out foreign matter The fixed filter 20 installed at the front of the boost pump 10 has a filter bypass valve 19 after blocking the front and rear valves 11 and 12 when accumulating foreign substances. After forming the flow path to supply to each cooler, it is comprised so that the filter 20 may be disassembled and cleaned.

However, if the flow path of the seawater supplied to each cooler is changed as described above, since the seawater is supplied to each cooler in a state in which foreign substances are not removed, the cooler tube is closed, thereby lowering the efficiency of the facility. If the tube closure rate is more than 30%, the cooler itself must be replaced, but due to the characteristics of the power plant, the cooler can be replaced only when the plant is stopped.

In the drawings, reference numeral 51 is a boiler, 52 is a high-pressure turbine, 54 is a generator, and 55 is a reheater.

The present invention was devised to solve this problem in consideration of the above-mentioned problems. When foreign matters are accumulated in the filter at the same time, the foreign matter is automatically blocked and the foreign matter attached to the filter is removed automatically with high-pressure washing water. The purpose of the present invention is to provide an apparatus for automatically removing foreign substances using seawater flow rate, which is to improve the efficiency of the facility, the productivity of maintenance work, and the stable operation of the facility.

This object of the present invention is equipped with a truncated cone filter mounted on the seawater inlet pipe to trap the suspended matter in the seawater; A foreign substance extraction device for discharging the foreign substances collected in the filter to the outside; Washing water tank for dispensing the washing water supplied from the boost pump to the discharge pipe; A spouting pipe connected to the washing water tank for spouting high-pressure washing water so that foreign substances are easily extracted; A rotary blade mounted to the jet pipe to help the foreign matter extraction device to rotate by the seawater flow rate for washing water; A pressure detector mounted on the cooling water supply pipe to detect pressure at the front and rear ends; It is electrically connected to the pressure detector and electrically connected to an automatic opening and closing valve for opening and closing the foreign substance discharge pipe and the washing water supply pipe. When a signal is applied from the pressure detector, the automatic opening and closing valve of the washing water supply pipe and the foreign substance discharge pipe is developed to extract the foreign matter and discharge the discharge pipe. It is achieved by including a control unit for discharging through the valve and causing the automatic closing valve to close when no signal is applied.

1 is a block diagram of a general seawater debris removal device,

Figure 2 is a block diagram equipped with an automatic foreign matter removal device using the seawater flow rate according to the present invention,

Figure 3 is an exploded view of the foreign matter automatic removal device using the seawater flow rate of the present invention,

Figure 4 is a detailed view of the foreign matter automatic removal device using the seawater flow rate according to the present invention.

Explanation of symbols on the main parts of the drawings

1: multiplier, 2: rotary bar screen,

3: traveling screen, 4: seawater pump,

7: seawater supply pipe, 8: seawater discharge pipe,

31: filter, 32: foreign matter extractor,

34: washing tub, 35: jet pipe,

38: rotary blade, 45: injection nozzle,

47: foreign substance discharge pipe, 61: automatic water supply valve for washing water supply,

62: foreign matter automatic opening and closing valve, 70: control unit,

71: pressure detector, 72a, 72b: pressure detector tube.

Hereinafter, a preferred embodiment according to the present invention will be described in more detail based on the accompanying drawings.

Figure 2 is a main component configuration equipped with a foreign material automatic removal device using the seawater flow rate according to the present invention.

As can be seen through the drawing, the apparatus 100 for automatically removing foreign substances using the seawater flow rate according to the present invention is installed on the seawater supply pipe 7 in front of the boosting pump 10.

Thus, the rotary blade 38 connected to the foreign substance extraction device 32 is rotated by the supply pressure of the cooling water, and the foreign substance filtered by the filter 31 is rotated while the foreign substance extraction device 32 is rotated by the rotational force of the rotary blade 38. The washing water supplied from the boost pump 10 is discharged to the seawater discharge pipe 8 via the foreign substance discharge pipe 47.

As described above, the apparatus for automatically removing foreign matters 100 is, as shown in FIG. 3, so that the washing water tank 34 to which the washing water dispensed from the boosting pump 10 is supplied and the outer peripheral part of the washing water tank 34 are opposed to each other. A pair of jet pipes 35 to be installed, and a truncated cone-shaped filter 31 having a hollow inside thereof formed in a mesh fixed to the seawater supply pipe 7 while being spaced so as to be in contact with the jet pipe 35. And, provided in the hollow interior of the filter 31 and the upper surface of the foreign matter extractor 32 is fixed to the washing tub 34, and the foreign matter extractor (32) is fixed to the lower body of the foreign material extractor (32) It consists of a rotary blade 38 for making the rotation 32.

The washing water tank 34 is formed in a cylindrical shape so that the washing water classified in the boosting pump 10 can be supplied, and an axial movement preventing lid 41 is fixed at the upper end thereof to prevent the separation from the shaft movement preventing lid. Guide bearings 39 for guiding the washing water tank 34 to be rotated smoothly are provided below and adjacent to 41.

Thus, the washing water bottle 34 is in communication with the washing water classification pipe ('46' of FIG. 2) of the boost pump 10 connected through the shaft movement preventing lid 41 and the shaft movement preventing lid 41 It becomes rotatable about the guide bearing 39.

In addition, the axial movement preventing lid 41 is covered on the upper portion of the guide bearing 39 to prevent the foreign matter extractor 32 from being pushed in the flow direction of the fluid when the foreign matter extractor 32 is rotated by the flow rate so that the foreign matter extractor 32 Is prevented from moving in the axial direction.

The spout pipe 35 is fixed to a pair of outlets 28 perforated opposite to each other on a portion of the outer circumference of the washing water bottle 34 and is disposed in an oblique form to be somewhat downwardly inclined.

In addition, the injection pipe 35 is formed with a plurality of injection nozzles 45 at regular intervals along the longitudinal direction.

Therefore, the washing water supplied to the washing water tank 34 can be sprayed through the spray nozzle 45 via the spray pipe 35 in communication therewith.

In addition, the ejection pipe 35 is provided with a roller 36 fixed by a nut 37 at its end for smooth rotation when rotated in conjunction with the washing water bottle 34.

As described above, the filter 31 is a mesh formed in the shape of a truncated cone, and is configured in a hollow shape.

In addition, the truncated top surface of the filter 31 is installed adjacent to the bottom surface of the wash tub 34, the bottom surface is bolted to the inner circumference of the sea water supply pipe (7). To this end, the outer circumference of the lower end of the filter 31 forms a band shape.

Therefore, on the outer circumferential edge of the filter 31, the jet pipe 35 is rotatably disposed along the inclined surface with a minute spaced space, and the washing water tank 34 is formed of the filter 31. Smooth rotation can be performed without interference.

The foreign material extractor 32 is assembled in a hollow structure to the U-shaped tube 43 in the shape of a hollow shaft in the center and formed on both sides of the hollow shaft, and forms an inlet of the U-shaped tube 43. In order to prevent the U-shaped tube 43 from flowing, the fixing base 44 is welded to the U-shaped tube 43 and the hollow shaft in the transverse direction.

And the upper elastic rubber plate 33 of the U-shaped tube 43 is fixed with a fixing bolt 78.

In addition, a fixed plate 65 is formed below the hollow shaft of the foreign matter extractor 32 so that the rotary blade 38 to be described later can be rotated coaxially.

In addition, the lower portion of the hollow shaft of the foreign matter extractor 32 is penetrated and the upper portion is closed to be connected to the cylindrical washing water container 34 and the fixing bolt 79 to be rotated coaxially.

Rotating blade 38 is assembled to a plurality of fixing bolts 77 to the fixing plate (65).

Therefore, when the rotary blade 38 is rotated by the flow rate of the sea water, the foreign material extractor 32 in which the rotary blade 38 is fixed is linked to rotate simultaneously.

In addition, a support bearing 40 having a shape corresponding to the guide bearing 39 is installed at an end portion of the hollow shaft which is directly below the rotary blade 38 to induce smooth rotation of the foreign material extractor 32.

Automatically removing the foreign matter 100 using the seawater flow rate of the present invention made in such a configuration, as shown in Figure 4, while supplying seawater to the power plant by operating a seawater pump ('4' of FIG. 1) Since the cooling water supplied to the respective coolers is also constantly supplied, the rotary blade 38 rotates due to the flow rate of the seawater so that the spout pipe 35 coaxially with the foreign matter extractor 32 inside the filter 31 is always rotated. .

When foreign matter contained in the seawater flows into the filter 31 and accumulates, differential pressure is generated in the pressure detector pipes 72a and 72b provided at the front and rear ends of the filter 31, and a signal is input to the pressure detector 71. .

At this time, the pressure detector 71 converts the received signal into an electrical signal and sends it to the controller 70.

Subsequently, the control unit 70 receiving a signal from the pressure detector 71 supplies a foreign substance discharge automatic opening and closing valve 62 and a washing water to discharge foreign substances when the transmitted electrical signal exceeds a preset reference value. Signals to deploy the flushing water supply automatic opening and closing valve (61).

When the washing water supply automatic opening and closing valve 61 is opened, the washing water supplied from the boosting pump 10 is spray nozzle 45 at the rear of the filter 31 in which foreign matter accumulated through the washing water tank 34 and the spout pipe 35. It is sprayed at high pressure through.

When the high-pressure washing water is injected into the filter through the injection nozzle 45, the foreign matter attached to the filter 31 falls into the U-shaped pipe 43 of the foreign material extractor 32, and then rides through the internal pipe of the extraction device and discharges the foreign material discharge pipe 47. At the same time, the foreign matter discharge automatic opening and closing valve 62 is deployed and discharged to the seawater discharge pipe 8.

At this time, the rubber plate 33 attached to the U-shaped tube 43 of the foreign substance extractor 32 collects the foreign matter in the U-shaped tube 43 when separating the foreign substance at a high pressure from the injection nozzle 45, and the foreign substance extractor ( 32) Rotate smoothly by preventing internal interference.

The foreign matter accumulated in the filter 31 as described above is sprayed with the washing water supplied from the boosting pump 10 higher than the pressure supplied from the sea water pump 4 through the injection nozzle 45 to remove the foreign matter attached to the filter 31. The filter unit is collected in the U-shaped pipe 43 and sent to the inside of the foreign matter extractor 32, and the suction pressure is generated at the tip of the foreign substance discharge pipe 47 due to the flow rate of the seawater drained through the seawater discharge pipe 8. The foreign matter separated in (31) is easily discharged into the sea water discharge pipe (8).

In addition, when the foreign matter accumulated in the filter 31 is removed and sends an electrical signal entering the pressure detector 71 to the control unit 70, the control unit 70 if the received signal is less than the predetermined reference value supply automatic opening and closing valve Electrical signal is sent to close the 61 and the foreign matter discharge automatic opening and closing valve (62).

As described above, the automatic opening / closing valves 61 and 62 are repeatedly opened and closed according to the signal of the controller 70 to automatically remove the foreign matter collected in the truncated cone filter 31. Will be.

As described in detail above, the foreign matter automatic removal device using the seawater flow rate according to the present invention provides the following effects.

First, foreign matter in the seawater, which is a cooling medium of the power plant, can be continuously removed during operation, and the durability and efficiency of each cooler can be improved by effectively blocking and removing foreign matters of seawater entering each cooler.

Second, by operating the debris removal device without additional power, there is an advantage that the stable operation of the facility is possible by improving the durability and productivity of the facility and the efficiency of the maintenance work.

Claims (1)

A cylindrical washing tub 34 rotatably installed with a pair of jet pipes 35 for spraying the washing water classified in the boost pump 10 to the side and down; The upper surface is in close contact with the washing water tank 34 and the lower end is a hollow truncated conical filter 31 fixed to the seawater supply pipe (7), It is located inside the filter 31 and the upper end is fixed to the washing water tank 34 and the lower end is connected to the foreign substance discharge pipe 47, the upper side of the pair of U-shaped pipe corresponding to the discharge pipe (35) ( 43) and the foreign matter extractor 32 of the tubular body provided with a flange-shaped fixing plate 65 in the middle, Automatic removal of debris using seawater flow rate, characterized in that consisting of a rotary blade 38 fixed to the fixed plate 65 of the debris extractor (32).