JPH0473482B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dummy frame for a corner drop gate installed at a water intake, water outlet, etc. of a power plant or the like.

(Conventional technology and problems) Corner drop gates for inspection are installed at water intakes, water outlets, etc. of thermal power plants and nuclear power plants.
When the gate is not in use, it is common to pull it up from the gate groove and store it separately.

If the gate is left pulled up from the gate groove, shellfish, etc. will adhere to the door groove, making it difficult to insert the corner drop gate next time during inspection. Therefore, while the gate is not in use,
In some cases, a so-called dummy frame is inserted into the gate groove after the gate has been raised to prevent the door groove from becoming clogged with shellfish, etc. Ta.

However, the conventional dummy frame 50 is made entirely of steel and is fitted into the door groove 60 as shown in FIG. There was a problem in that a considerable gap had to be allowed between it and the inner wall, and it was impossible to prevent shellfish from attaching to this gap.

(Technical Problem) Therefore, in this invention, when the dummy frame is set after pulling up the corner drop gate,
A technical problem is to prevent a gap from forming between a frame and a door groove and to enable easy insertion into the door groove.

(Means for Solving the Problem) In order to achieve the above object, the dummy frame device for a corner drop gate in the present invention includes a dummy frame made of a steel frame so as to be fitted into the corner drop gate groove from above and to be freely inserted into and removed from the top. In this device, a closing body made of an elastic material such as rubber or styrofoam is provided on the frame body side to close the gap between the frame body and the inner wall of the door gutter.

Further, it is preferable that the closure body is a hollow rubber bag.

Further, the closing bodies may be provided on both the front and rear sides of both left and right ends of the frame body so that a sealed space is formed in the gate groove.

(effect) The above technical means works as follows.

1 to 5 show the state in which the dummy frame 20 is inserted into the gate groove 10 after the corner drop gate (not shown) has been pulled up.

Dummy frame 20 is placed in the gate groove 10 from above.
When the gate groove 10 is inserted and fitted into the fixed position, the gate groove 10 is closed by the closing body 30, so that there is no gap.

In the case of FIGS. 3 and 4, a closed space S is formed by the front and rear closing bodies 30, and the seawater therein becomes dead water due to the sealing.

(Effects) The present invention provides a closing body made of an elastic material such as rubber or styrofoam on the frame body side so as to close the gap between the frame body and the inner wall of the door groove. Since the gap between the frame body and the frame body of the dummy frame is closed by a closing body, it is possible to prevent sea creatures such as shellfish from forming and adhering to the inner wall of the gate groove as much as possible, and it is also possible to insert the frame body into the gate groove. When doing so, the closing body acts as a guide and is soft and acts as a cushion, so the frame body can be easily inserted without damaging the wall surface of the door groove.

In addition, in claim 3, a sealed space is formed in the doorway, and even if seawater enters and stagnates in the space, it becomes dead water, so the generation of sea creatures such as shellfish can be prevented, and the structure is simple. It is characterized by its remarkable practical effects.

(Example) The frame body 21 is made of steel, and the inside of the frame is open so that seawater can freely pass through.

As shown in FIG. 2, molded polystyrene foam 30a is provided on both left and right sides of the frame body 21 as a closure body.
I installed it. Dummy frame 2 in gate groove 10
When 0 is inserted, the entire door groove is closed with Styrofoam without any gaps. Molded polystyrene foam has good compressive force and cushioning properties, so it is suitable for filling door grooves.

As shown in FIGS. 3 and 4, the frame body 2
Closing bodies 30 are attached to both the front and rear sides of both left and right ends of the door groove 10, so that a closed space S is formed in the door groove 10. FIG. 3 shows a case in which a hollow oval rubber bag 30b is attached to the entire length of the fitting part as a closure, and FIG. 4 shows a case in which a rubber tube 30c with a circular cross section is attached.

The space S is a rubber bag 30b or a rubber tube 30c.
Because it is sealed and sealed, even if seawater enters and stagnates inside, it will become dead water and sea creatures such as shellfish will not grow. Furthermore, since there is a space S, the work of inserting the dummy frame 20 into the gate groove 10 can be performed easily.

In FIG. 5, closing bodies are provided so as to continuously cover the end faces of both left and right ends of the frame body and both front and rear ends in a U-shape. In this case, a rubber band or a flattened hollow rubber bag 30d is used as the closure.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, the first
The figure is a front view of the gate groove equipped with a dummy frame, Figure 2 is an enlarged cross-sectional view of the door groove fitting part, Figure 3 is a cross-sectional view of the second embodiment, and Figure 4 is a cross-sectional view of the second embodiment. The figure is a cross-sectional view of the third embodiment, FIG. 5 is a cross-sectional view of the fourth embodiment, and FIG. 6 is a cross-sectional view of a conventional example. 10...Gate door groove, 20...Dummy frame, 21...Frame body, 30...Closing body.

Claims (1)

[Scope of Claims] 1. In a device provided with a dummy frame made of a steel frame so as to be freely inserted into and removed from above in a corner-drop gate door groove, there is a gap between the frame body and the inner wall of the door groove. 1. A dummy frame device for a corner drop gate, characterized in that a closing body made of an elastic material such as rubber or styrofoam is provided on the frame body side so as to close the frame body. 2. The dummy frame device according to claim 1, wherein the closure body is a hollow rubber bag. 3. The dummy frame device according to claim 1, wherein the closing bodies are provided on both the front and rear sides of both left and right ends of the frame body so that a sealed space is formed in the gate groove.