JPS5916714Y2 - Foreign matter removal device such as shells - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for removing foreign substances such as shellfish for condensers of thermal and nuclear power plants.

Foreign matter such as shells often enters the ice chamber on the condenser inlet side, and to remove this foreign matter, the condenser is set to single-lung operation, and working tools are placed inside the water chamber and manually carried out of the ice chamber. This required a lot of effort and time.

Therefore, there is a method of attaching a device for removing shellfish, etc., and one of the commonly available devices on the market is a device for removing shellfish by turning (arrow in the figure) equipped with a rotating valve as shown in Fig. 1 (a, l).

In this device, during normal operation, the rotation valve 02 is fully open, and during removal, the valve 02 is slightly tilted to give water a swirl to remove shellfish and the like attached to the perforated plate 01. The drawback was that it was very expensive and difficult to generalize.

In the figure, 06 is a water intake port, and 07 is a water supply port to the condenser.

The present invention was developed in view of the above-mentioned shortcomings of conventional devices, and is equipped with a cleaning device that slides on the inner surface of a perforated plate, and uses the resulting pressure difference and water turbulence to remove shellfish, etc. The purpose of the present invention is to provide a foreign matter removal device that has a simple configuration and is inexpensive, with very little loss during normal operation.

Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a sectional view showing the structure of the foreign matter removing device of the present invention, and FIG. 3 is a sectional view showing the operation.

In the figure, the arrows indicate the flow of water, 1 is a perforated plate, 2 is a purifier that slides on the inner surface of the perforated plate 1 and generates a pressure difference between the inside and outside of the perforated plate, and turbulence inside, 3 is a A discharge valve for discharging the removed shellfish, 4 a motor for sliding the cleaner 2, 5 a cleaner storage chamber in which the cleaner 2 is stored during normal operation, 6 a water intake port, and 7 a return valve. The water supply port 8 to the water bowl is from a shellfish attached to the inner surface of the perforated plate 1.

Water supplied to the condenser (not shown) enters through the installation port 6, passes through the perforated plate 1, and exits from the water supply lower, but the shellfish contained in the removed water and other foreign matter are removed from the perforated hole. It adheres to the inner surface of plate 1.

In this adhered state, when the cleaner 2 is slid by the drive of the motor 4, the shellfish and other foreign matter adhering to the inside of the porous plate 1 are scraped up, and the discharge valve 3 is opened to discharge them to the outside.

In the figure, the reciprocating movement of the purifier 2 is shown to be electric, but it may be performed by other means, such as hydraulically or manually.

Further, as another shape of the cleaner 2, a donut plate or the like may be used, and a helical groove may be appropriately provided on the outer periphery.As shown in FIG. 3, the cleaner 2 is slid on the inner surface of the perforated plate 1. As a result, the inner pressure P8 and the outer pressure P of the perforated plate 1.

A pressure difference (Po>P8) occurs between the two, and the water flows through the perforated plate 1.
It enters through the gap between the perforated plate 1 and the outer periphery of the purifier 2, and turbulence occurs in the wake as shown by the arrow, causing foreign matter such as 8 to peel off from the shellfish attached to the inner surface of the perforated plate 1. , this can be removed.

By adopting the removing device of the present invention, shells can be removed even during operation, and by sliding the remover back and forth, the entire surface of the porous board can be removed.The structure is simple, so there are fewer breakdowns and it can be carried out at low cost. Is possible.

[Brief explanation of drawings]

Figures 1a and 1) show a conventional removal device, Figure 1a is a cross-sectional view, Figure 1 is a longitudinal sectional view, Figure 2 is a cross-sectional view showing the structure of the removing device of the present invention, and Figure 3 is a cross-sectional view. is a sectional view showing the effect. 1... Perforated plate, 2... Purifier, 3...
...Discharge valve, 4...Motor, 5...
・Purifier storage room, 6... Intake port, 7...
・Water supply port, 8...from shellfish.

Claims (1)

[Scope of utility model registration request] A purifier that slides on the inner surface of the perforated plate and generates a pressure difference between the inside and outside of the perforated plate and a turbulent flow of water inside the perforated plate to peel off and remove foreign matter such as shellfish attached to the inner surface of the perforated plate is attached to the perforated plate. A device for removing foreign matter from shellfish, etc., characterized in that it is installed inside.