JP3608975B2 - Cleaning body recovery device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cleaning body recovery apparatus that recovers a cleaning body that cleans the inside of a condenser thin tube.
[0002]
[Prior art]
Generally, a condenser used in a thermal power or nuclear power plant is provided with a bundle of thin tubes through which cooling water such as seawater circulates in order to condense steam flowing in from a turbine. However, as described above, seawater or the like is circulated in the narrow tube, and deposits such as scale and scale adhere to the narrow tube, leading to a decrease in thermal efficiency. For this reason, for example, a cleaning body such as a sponge ball is periodically introduced into the condensate system at a frequency of once a day and is circulated together with the circulating water to remove deposits in the narrow tube.
[0003]
An outline of a conventional condenser thin tube cleaning apparatus is shown in FIG. When the cleaning body 10 such as a sponge ball introduced into the inlet of the condenser circulating water 22 from the cleaning body charging pipe 23 passes through the condenser thin tube 24 built in the condenser 21 and adheres to it. , Peel off water, etc., and flow out the condenser 21. The cleaning body 10 is extracted by the cleaning body collector 25 and is recovered in the cleaning body recovery unit 31 through the cleaning body take-out pipe 26, the cleaning body circulation pump 27, and the cleaning body counter 30. The recovered cleaning body 10 is again input to the inlet of the condenser circulating water 22 from the cleaning body input pipe 23 of the bypass system 29 as necessary.
[0004]
FIG. 5 is a detailed view of the cleaning body recovery unit shown in FIG. The cleaning body recovery device has a drum-shaped cleaning body recovery chamber 1 whose upper half is a punched perforated plate drum 2 and whose lower half is a cleaning body recovery valve 3 whose flow path can be switched. 4 etc. Further, a lid 11 is provided in the upper part of the cleaning body recovery chamber 1, and a cleaning body charging port 13 and a cleaning body charging valve 14 for additionally charging the cleaning body 10 as needed are attached to the lid 11. ing. Further, a viewing window 12 for internal observation is attached to the lid 11. FIG. 7 is a detailed view of the cleaning body recovery valve 3 shown in FIG. The cleaning body recovery valve 3 is configured such that the opening 43 of the cleaning body recovery valve 3 can be opened and closed by sliding the valve body 40 formed on the cylindrical surface with the power of the electric drive device 6. Has been. FIG. 7 shows a state in which the opening 43 of the cleaning body recovery valve 3 is closed by the valve body 40.
[0005]
In the cleaning body recovery apparatus configured as described above, when the cleaning body is circulated, the cleaning body recovery valve 3 is punched through the shaft and the bearing 4 by the electric drive device 6 installed outside the cleaning body recovery chamber 1. It is set so that the inside of the perforated plate drum 2 and the outflow pipe 5 are vertically circulated. The cleaning device circulating water 33 accompanied by the cleaning body 10 enters the punched perforated plate drum 2 from the inlet 8 and descends, passes through the cleaning body recovery valve 3, flows through the outflow pipe 5, and exits from the cleaning body circulation valve 9. go.
[0006]
Further, as shown in FIG. 7, when the cleaning body is recovered, the cleaning body recovery valve 3 is arranged so that the lower half portion inside the cleaning body recovery chamber 1 and the outflow pipe 5 circulate outside the punched perforated plate drum 2 . The valve body 40 is switched by the electric drive device 6. The cleaning device circulating water 33 accompanied by the cleaning body 10 enters the punched perforated plate drum 2 from the inlet 8, and only water flows out from the holes 41 of the perforated plate, and the lower half of the cleaning body recovery chamber 1. From the cleaning body circulation valve 9 , the cleaning body recovery valve 3 flows through the outflow pipe 5 through the hole 42 formed at a position below the opening 43 of the cleaning body recovery valve 3. The cleaning body 10 accumulated in the punched perforated plate drum 2 is set so as to flow through the cleaning body recovery valve 3 in a vertical direction at an appropriate time, and is taken out through the outflow pipe 5.
[0007]
[Problems to be solved by the invention]
In each component constituting the conventional cleaning body recovery unit, the cleaning body recovery valve 3 that opens and closes the flow path by sliding the circular or spherical surface gently, and the cleaning body recovery valve 3 are operated via the shaft and the bearing 4. The electric drive device 6 to be operated requires time for its operation. During this time, a part of the cleaning body 10 gets stuck in the opening of the cleaning body recovery valve 3, and the operation becomes improper or the cleaning body 10 may be deformed or damaged. In addition, the electric drive unit 6, the shaft, the bearing 4 and the like required time for maintenance and management.
[0008]
An object of the present invention is to provide a cleaning body recovery apparatus that can smoothly perform a flow path switching operation and can reliably recover a cleaning body.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the cleaning body recovery apparatus of the present invention is a cleaning body recovery apparatus for recovering a cleaning body from circulating water circulated in a narrow tube of a condenser, wherein the cleaning body recovery apparatus is cylindrical. The cleaning body recovery chamber formed in the interior of the cleaning body recovery chamber is connected to the outer periphery of the cleaning body recovery chamber, and the inside and the outside communicate with each other, and a plurality of holes having a diameter smaller than the diameter of the cleaning body are formed. A punched perforated plate drum having a first pipe for communicating circulating water and the cleaning body into the perforated perforated plate drum, the cleaning body recovery chamber, and the punched perforated plate drum; A perforated plate drum is connected to the second perforated water and the cleaning body led into the punched perforated plate drum to the outside of the cleaning body recovery chamber, and is connected to the cleaning body recovery chamber; Circulating water in the punched perforated plate drum through holes formed in the punched perforated plate drum And a third pipe leading to the outside, characterized by comprising the first, second and third valve to the pipe.
[0010]
The cleaning body recovery device includes an inclined plate formed at the bottom of the punched perforated plate drum, and a cleaning body recovery port for discharging the cleaning body in the punched perforated plate drum to the outside. It is.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a cleaning body recovery apparatus according to an embodiment of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is a block diagram of a cleaning body recovery device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line A-B-C-D shown in FIG. 1, and FIG. It is sectional drawing which follows a FGH line.
[0013]
1 has a double structure in which a perforated plate drum 2 is disposed inside a drum-shaped cleaning body recovery chamber 1. Further, a lid 11 is provided on the upper part of the cleaning body recovery unit 1, and a cleaning body charging port 13 and a cleaning body charging valve 14 for additionally charging the cleaning body 10 are attached to the lid 11 as necessary. Yes. Further, a viewing window 12 for internal observation is attached to the lid 11.
[0014]
An inlet 8 is provided near the inner lower end of the punched perforated plate drum 2, and a collector inlet valve 7 is attached to the pipe. An outlet 15 is provided near the inner upper end of the punched perforated plate drum 2, and a cleaning body circulation valve 16 is attached to the piping. A recovery chamber outlet 17 is provided in the center on the opposite side of the cleaning body recovery chamber 1, and a cleaning body recovery valve 18 is attached to the piping. An inclined bottom plate 19 and a cleaning body take-out seat 20 are provided at the bottom of the punched perforated plate drum 2.
[0015]
FIG. 6 shows the open / close state of each valve during operation of the cleaning body recovery unit configured as described above. First, at the time of circulation of the cleaning body, the collector inlet valve 7 and the cleaning body circulation valve 16 are set in an open state, and the cleaning body recovery valve 18 is set in a closed state. The cleaning device circulating water 33 accompanied by the cleaning body 10 passes through the collector inlet valve 7, enters the punched perforated plate drum 2 from the inlet 8, rises, exits from the outlet 15, and passes through the cleaning body circulation valve 16. To the outside.
[0016]
At the time of recovery of the cleaning body, the collector inlet valve 7 and the cleaning body recovery valve 18 are set in an open state, and the cleaning body circulation valve 16 is set in a closed state. The switching operation is performed in a short time. The cleaning device circulating water 33 accompanied by the cleaning body 10 passes through the collector inlet valve 7 and flows into the punched perforated plate drum 2 from the inlet 8, and only the circulating water flows out from the recovery chamber outlet 17. In addition, the cleaning body 10 entrained in the circulating water is deposited near the inside of the perforated plate drum 2 on the side facing the inlet 8. That is, only seawater exits from the hole in the perforated plate to the outside of the punched perforated plate drum 2 and flows from the recovery chamber outlet 17 through the cleaning body recovery valve 18. When the circulating water in the punched perforated plate drum 2 flows out from the recovery chamber outlet 17, the cleaning body take-out seat 20 is opened and the cleaning body 10 accumulated on the inclined bottom plate 19 in the punched perforated plate drum 2 is appropriately used. Take out.
[0017]
By configuring as described above, according to the present embodiment, it was possible to smoothly perform the operation of the cleaning body recovery unit without deforming or damaging the cleaning body 10. Moreover, according to the present Example, it became possible to collect | recover a washing | cleaning body reliably. In addition, the installation space for the equipment can be greatly reduced compared to the prior art, and maintenance and management can be made extremely easy.
[0018]
【The invention's effect】
As described above, according to the present invention, the flow path switching operation can be performed smoothly and the cleaning body can be reliably recovered.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a cleaning body recovery device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line ABCD shown in FIG.
3 is a cross-sectional view taken along the line EFGH shown in FIG. 1;
FIG. 4 shows a conventional condenser thin tube cleaning device.
FIG. 5 is a configuration diagram of the cleaning body recovery unit shown in FIG. 4;
FIG. 6 is a view showing an open / close state of a valve in the present embodiment.
7 is a detailed view of the cleaning body recovery valve shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Cleaning body collection | recovery chamber, 2 ... Punched perforated plate drum, 3 ... Cleaning body collection | recovery valve, 4 ... Shaft, bearing, 5 ... Outflow pipe, 6 ... Electric drive device, 7 ... Collector inlet valve, 8 ... Inlet , 9 ... Cleaning body circulation valve, 10 ... Cleaning body, 11 ... Lid, 12 ... Viewing window, 13 ... Cleaning body inlet, 14 ... Cleaning body inlet valve, 15 ... Outlet, 16 ... Cleaning body circulation valve, 17 ... Recovery chamber outlet, 18 ... Cleaning body recovery valve, 19 ... Inclined bottom plate, 20 ... Cleaning body take-out seat, 21 ... Condenser, 22 ... Condenser circulating water, 23 ... Cleaning body input pipe, 24 ... Condenser Narrow tube, 25 ... Cleaning body collector, 26 ... Cleaning body take-out pipe, 27 ... Cleaning body circulation pump, 28 ... Cleaning body branching valve, 29 ... Bypass system, 30 ... Cleaning body counter, 31 ... Cleaning body collector, 32 ... Washing body water-containing device, 33 ... Washing device circulating water , 40 ... Valve body, 41,42 ... hole, 43 ... opening .

Claims (1)

In the cleaning body recovery apparatus for recovering the cleaning body from the circulating water circulated in the condenser thin tube, the cleaning body recovery apparatus includes a cylindrical cleaning body recovery chamber and an interior of the cleaning body recovery chamber. A punched perforated plate drum having a plurality of holes formed with a diameter smaller than the diameter of the cleaning body, and the cleaning body recovery chamber and the punching perforation. A plate pipe is communicated, and the first pipe for guiding the circulating water and the cleaning body into the punched perforated plate drum is communicated with the cleaning body recovery chamber and the punched perforated plate drum, and is introduced into the punched perforated plate drum. A punched perforated plate through a hole formed in the punched perforated plate drum, which is communicated with the second pipe for guiding the circulating water and the cleaned body to the outside of the cleaned body recovery chamber, and the cleaning body recovery chamber A third pipe for guiding the circulating water in the drum to the outside, and the first, second and second pipes A valve in the pipe,
The cleaning body recovery apparatus includes an inclined plate formed at a bottom portion in the punched perforated plate drum, and a cleaning body recovery port for discharging the cleaning body in the punched perforated plate drum to the outside. Cleaning body recovery device.

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