JP2712011B2 - Valve protection cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is applied to a valve,
The present invention relates to a valve protection cover for protecting a valve from raindrops or the like.

[0002]

2. Description of the Related Art Valves such as manual valves used outdoors, such as thermal power plants, are designed to prevent corrosion caused by raindrops.
A protective cover used over the valve is used. As the protective cover, a galvanized steel plate, an aluminum plate, or a vinyl film is used.

[0003]

In this prior art, although the infiltration of raindrops can be prevented, the moisture inside is not released to the outside, so that the inside is in a high humidity state.
There is a problem that the internal environment may be deteriorated such as dew condensation and rusting of valves and the like. In addition, there is a problem that early detection of an abnormal state is hindered because hot air (high-temperature steam leakage) at the time of an internal accident is not released to the outside.

The present invention has been made for the purpose of solving such problems of the prior art.

[0005]

Means for solving the above problems will be described below with reference to FIGS. 1 , 2 , and 3 corresponding to the embodiment. According to the present invention, an acrylic mesh 1, an expanded porous polytetrafluoroethylene film 2, and an acrylic fiber 3 are laminated and sewn together to form an integral body.
The end and the lid 42 are connected, and raindrops
Raindrop intrusion prevention cover 4 to prevent intrusion into the part
5 is sewn around the top of the lid 42 and sewn and fixed to the valve
A fastening belt 47 for tightening is provided below the cylindrical portion 41.
It is provided around .

[0006]

In the above-mentioned structure, the stretched porous polytetrafluoroethylene film 2 and the acrylic fiber 3 release the inside moisture and hot air to the outside.

[0007]

FIG. 1 is a diagram showing an embodiment of the present invention. In FIG. 1, 1 is an acrylic mesh, 2 is an expanded porous polytetrafluoroethylene film, and 3 is an acrylic fiber.

The acrylic mesh 1 is in the lower layer,
This is to prevent damage to the stretched porous polytetrafluoroethylene film 2 by contacting the valve. The mesh is used to ensure air permeability. Acrylic is used because it has excellent flame retardancy, heat resistance, and chemical resistance, so that it can be used for high-temperature steam-based valves in thermal power plants and the like.

[0009] The stretched porous polytetrafluoroethylene film 2 is located in the intermediate layer and releases internal moisture and hot air to the outside. Therefore, the inside is in a low humidity state.
Early detection of high-temperature steam leaks without deteriorating the internal environment
It will be easier. Stretched porous polytetrafluoroethylene (registered name: Gore-Tex) has a fine continuous porous structure, and emits moisture and hot air to the outside. Further, it has excellent water repellency and has a water absorption of zero. It is also better than vinyl in heat resistance and chemical resistance.

The acrylic fiber 3 is on the surface layer and protects the stretched porous polytetrafluoroethylene film 2 from damage caused by raindrops or contact with the outside. Moisture and hot air that have passed through the stretched porous polytetrafluoroethylene film 2 are released to the outside through the acrylic fibers 3. The acrylic fiber 3 is subjected to a water-repellent treatment to prevent water absorption and penetration. The acrylic fiber 3 on the surface can be used in various colors according to the function and use of the valve.

The acrylic mesh 1, the expanded porous polytetrafluoroethylene film 2 and the acrylic fibers 3
Stacked and sewn together.

The protective cover 4 is, as shown in FIGS.
It is composed of a cylindrical part 41 and a lid part 42. Cylindrical part 4
A part of the upper end of 1 and the lid 42 are connected via a connecting piece 43, and the remaining part is connected via a fastener 44. Both ends of the fastener 44 are fixed to the connecting piece 43. The fastener 44 is made of plastic for use outdoors. In order to prevent raindrops from entering the inside from the fasteners 44, a raindrop intrusion prevention cover 45 is provided around the cover 42 and sewn. The raindrop infiltration prevention cover 45 is formed by laminating water-repellent acrylic fibers. In order to fix the protective cover 4 to the valve ,
The lower part of the cylindrical portion 41, that is the belt 47 is circumferentially tightening via the fastening belt support 46.

The protective cover 4 is mounted by tightening a tightening belt 47 after covering the valve body. Therefore, the attachment of the protective cover 4 is easy.

The valve is operated by opening the lid 42 by operating the fastener 44. Therefore, the protective cover 4
It is not necessary to remove the valve, and the valve operation is easy. Further, since the valve itself can be easily visually observed and grasped by opening the lid portion 42, the inspection of an abnormal state such as a steam leak can be easily and quickly performed.

[0015]

As described above, the present invention provides:
Acrylic mesh, stretched porous polytetrafluoroethylene film and acrylic fiber are layered and sewn together.
It was formed with those were, through the fastener
The upper end of the cylindrical part and the lid are connected by the
Raindrop intrusion prevention device to prevent droplets from entering the inside
A bar is wrapped around the top of the lid, sewn and secured to the valve.
A tightening belt is attached around the lower part of the cylindrical part.
It has been established . Therefore, the internal moisture and hot air are released to the outside. Therefore, according to the present invention,
As a result, it is possible to eliminate the deterioration of the environment such as dew condensation and rusting of the valve or the like due to the high humidity, and to easily detect an abnormal state at an early stage.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line AA of FIG. 2 showing one embodiment of the present invention.

FIG. 2 is a perspective view showing the embodiment of the present invention in a state where a lid is closed.

FIG. 3 is a perspective view showing an embodiment of the present invention in a state where a lid is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Acrylic mesh 2 Stretched porous polytetrafluoroethylene film 3 Acrylic fiber 4 Protective cover 41 Cylindrical part 42 Lid part 44 Fastener 45 Raindrop infiltration prevention cover

Claims (1)

(57) [Claims] An acrylic mesh, an expanded porous polytetrafluoroethylene film and an acrylic fiber are laminated,
It was formed with those integrated by sewing, off
The upper end of the cylindrical portion and the lid portion are connected via a fastener, and the
To prevent raindrops from entering the inside from the fastener
A raindrop intrusion prevention cover is provided around the top of the lid,
And a fastening belt for fixing to the valve is
Valve protection cover provided around the lower part of the cylinder