JP3149371U - Piping cover - Google Patents

Abstract

[PROBLEMS] To provide a pipe cover capable of preventing leakage of liquid leaking from a pipe accumulated in the pipe cover when the pipe cover to be detachably put on a required part of the pipe is removed, and early detection of fluid leakage from the pipe. provide. A pipe cover having a hollow portion is connected through a connecting member such as a joint, and an opening is formed at the bottom of the inner surface of a pipe cover capable of covering a required portion of the pipe through which fluid flows. A hollow portion with a bottom as a fluid reservoir portion is recessed. A self-sealing quick joint that can communicate with and shut off the hollow portion formed in the fluid reservoir is detachably attached to the fluid reservoir for the colorless leaked gas. Was made removable. Since a hollow portion is formed as a fluid storage portion that is opened at the bottom surface of the inner surface of the pipe cover that is spaced from the edge of the piping cover that is opened and closed by the fastener, the fluid leaking from the pipe is hollow as the fluid storage portion. The fluid leaked when the piping cover is removed from the piping does not leak out of the piping cover. [Selection] Figure 1

Description

  The present invention relates to a piping cover that wraps existing piping from the outside.

A piping cover for capturing fluid leaking from the existing piping is disclosed in Japanese Utility Model Publication No. 8-2557.
The above prior art has an advantage that the fluid leaking from the pipe portion concealed by the pipe cover can be captured and the inside of the pipe cover can be visually observed because the pipe cover is transparent.
However, there are the following drawbacks.
First, in the case of a pipe cover shape shown in FIG. 5 of the prior art document or a shape in which the pipe shaft is inclined or upright, it accumulates in the pipe cover when the pipe cover is removed for repairing a leaking part of the pipe. Liquid leaks from the piping cover. For this reason, the leaking liquid falls on the ground and the soil is contaminated. In the case of toxic gas, it is released to the atmosphere and the atmosphere is polluted.
Secondly, the presence of the liquid accumulated in the piping cover cannot be confirmed unless a person comes to see it. For this reason, if there is a liquid leak from the pipe before the person comes to check, the leaked liquid will fill the pipe cover, and this liquid pressure will burst the pipe cover, causing the liquid to fall and May harm humans or contaminate the ground.
Thirdly, if the harmful gas leaking from the piping is colorless and low pressure, it cannot be judged whether the harmful gas is leaking because the piping cover does not swell due to the leaking harmful gas.

  The present invention has been made in view of such problems, and the object of the present invention is to remove the leakage liquid from the piping that accumulates in the piping cover when the piping cover that is detachably put on the required portion of the piping is removed. An object of the present invention is to provide a piping cover capable of preventing the leakage to the pipe and early detection of fluid leakage from the piping.

  The piping cover of claim 1 according to the present invention can cover a required part of a piping facility in which a plurality of pipe bodies having hollow portions are connected via a connecting member such as a joint so that fluid flows through the hollow portions. A hollow portion with a bottom as a fluid reservoir that opens at the bottom of the inner surface of a simple pipe cover is recessed.

  A pipe cover according to a second aspect of the present invention is a rapid joint having a self-sealing structure in which the fluid reservoir formed in the pipe cover according to the first aspect can communicate and block a hollow portion formed in the fluid reservoir. It is characterized in that it is detachably connected via a pin.

  According to a third aspect of the present invention, there is provided a pipe cover according to the first aspect of the present invention, wherein a valve is provided in which a tip of the fluid reservoir formed in the pipe cover according to the first aspect is opened, and the opening and the base-side hollow portion can be communicated and blocked. It is attached to the fluid reservoir.

  Since a hollow portion is formed as a fluid storage portion that is opened at the bottom surface of the inner surface of the pipe cover that is spaced from the edge of the piping cover that is opened and closed by the fastener, the fluid leaking from the pipe is hollow as the fluid storage portion. Accumulate in the department. Thereby, the fluid leaked when removing the piping cover from the piping does not leak out of the piping cover.

  In addition, the fluid leaking from the pipe is stored in the hollow part of the fluid reservoir, so that the fluid that has entered the fluid reservoir can be easily detected by a known sensor. Signals can be sent to places where maintenance personnel are present

  In addition, since a pair of valves capable of opening and closing the hollow portion of the fluid reservoir is attached at an appropriate distance and the fluid reservoir between the valves is detachable, the fluid that is closed and sealed by the valve The reservoir can be removed from the piping cover. As a result, the gas that has entered the detached fluid reservoir can be transferred to a place where the gas analyzer is present and analyzed, so that even a colorless gas can be inspected for leaks.

  Hereinafter, preferred embodiments of the piping cover according to the present invention will be described with reference to the drawings, but the present invention is not limited thereto.

In the first embodiment shown in FIG. 1, reference numeral 1 denotes a pipe cover which is made of a transparent plastic film and has a substantially U-shaped cross section perpendicular to the axis of the pipe 10. The pipe cover 1 is connected to engagement edges 3a and 3b which form a known airtight fastener 3 at the longitudinal edge thereof so as to be airtight, and the engagement members 3a and 3b can be brought close to and away from each other. A slider 3c that engages the members 3a and 3b can be attached to the engaging members 3a and 3b so as to be able to advance and retreat. When the slider 3c is moved in one direction, both engaging members 3a and 3b are engaged. When moved in the direction, the meshing state is released.
As shown in FIGS. 1 and 2, when the flange portions 11 and 12 of the pipe whose axis is perpendicular to the large-diameter portion of the pipe cover 1 are covered, the fluid reservoir opened at the bottom of the inner surface of the large-diameter portion. A bottomed hollow portion as the portion 2 is formed.

The usage method of the piping cover 1 is demonstrated using FIG.
A flange 11 integrally connected to the tip of the pipe 10 whose axis is vertical and a flange 12 integrally connected to the tip of the pipe 13 are detachably connected via a packing material (not shown). After the piping cover 1 is arranged at a position where the flanges 11 and 12 can be covered with the large diameter portion of the piping cover 1, both the engaging members 3a and 3b are brought close to each other and the slider 3c is attached to both the engaging members 3a and 3b. When moved in one direction (upward in this figure), both engaging members 3a and 3b are engaged. Seal members 4, 4 made of an elastic material are attached to required positions of the pipes 10, 13, and the seal members 4, 4 are arranged so that the inner surfaces of the small diameter portions of the pipe cover 1 face each other and face the seal members 4, 4. Then, the band 5 is attached to the outer surface of the small-diameter portion of the pipe cover 1, and the hollow portion formed by the pipe cover 1 and the pipe members 10, 11, 12, 13 is hermetically sealed.

The operation of this embodiment will be described.
In FIG. 2, when harmful liquid leaks from the contact surface between the flange 11 and the flange 12, the liquid falls due to gravity and finally enters and accumulates in the hollow portion of the fluid reservoir 2. . For this reason, if the pipe cover 1 is removed from the pipe and the pipe is repaired before the invading harmful liquid overflows from the fluid reservoir 2, the harmful liquid in the pipe cover 1 is removed when the pipe cover 1 is removed. It has the effect of not flowing out.

FIG. 4 shows a case where the axis of the pipe is horizontal as the second embodiment.
The structure of the piping cover is the same as that of the first embodiment, and the piping cover 20 is a piping cover made of a transparent plastic film and having a substantially U-shaped cross section perpendicular to the axis of the piping 10. . The pipe cover 20 has engagement members 3a and 3b that groove the airtight fastener 3 similar to that of the first embodiment at the horizontal edge thereof, so that the engagement members 3a and 3b can approach and separate. A slider 3c that engages both the engaging members 3a and 3b can be attached to the engaging members 3a and 3b so as to be able to advance and retract. When the slider 3c is moved in one direction, both the engaging members 3a and 3b are engaged. On the other hand, if it moves to the opposite direction side, a meshing state will be cancelled | released.
Moreover, when the flange portions 11 and 12 of the pipe whose horizontal axis is horizontal with the large diameter portion of the pipe cover 20 are covered, a bottomed hollow portion serving as a fluid reservoir portion 22 opened to the inner bottom portion of the large diameter portion is formed. Is formed.

  A light projecting side sensor 30a of a transmissive photoelectric sensor 30 connected to a control panel (not shown) is disposed to face the light receiving side sensor 30b via the fluid reservoir 22, and the light receiving side sensor 30b receives light. If not detected, an abnormal signal indicating liquid leakage is output to the control room where maintenance personnel are waiting via the control panel.

  As in the first embodiment, the operation of the present embodiment is such that fluid leaking from the contact portion with the flange portions 11 and 12 enters and accumulates in the fluid storage portion 22. Therefore, even when the piping cover 20 is removed from the piping, the fluid does not flow out of the piping cover 20. Further, when the fluid heavier than the colored air accumulated in the fluid reservoir 22 blocks the light emitted from the light projecting side sensor 30a, the liquid leakage is detected and the signal is sent to the control chamber. Thereby, there is an effect that it is possible to notify the maintenance personnel in the distance before the harmful fluid overflows from the fluid reservoir 22.

  When the fluid is a colorless liquid, as shown in FIG. 6, the fluid reservoir 22 is contracted in the axial direction in advance and acts on the tip of the fluid reservoir 22 with a low load in place of the photoelectric switch 30. It is preferable that the lever 31a of the micro switch 31 to be brought into contact is made. (FIG. 6A) As a result, when liquid enters the fluid reservoir 22, the lever 31a of the micro switch 31 is pushed down by its weight, and the switch is turned on (FIG. 6B). An abnormal signal is sent to the control panel. It is possible to detect leakage of liquid from the pipe.

FIG. 5 shows another embodiment of the fluid reservoir 23.
Valves 14 and 17 are connected to the fluid reservoir 23 which is a bottomed hollow body that opens at the bottom of the piping cover, and the hollow portions can be freely communicated and blocked, and the valves 14 and 17 are connected to each other. Joints 15 and 16 are attached between the fluid reservoirs 23 so that the fluid reservoir 23 can be connected and detached.

  The operation of this embodiment will be described. Even if a harmful gas that is colorless and transparent and heavier than air leaks from the flanges 11 and 12 at a low pressure that does not rupture the piping cover, it will enter the fluid reservoir 23, so that the periodic inspection is performed. When the valves 14 and 17 are closed, the joints 15 and 16 are detached and the fluid reservoir 23 to which the joint 16 is attached is transferred to the gas analyzer and the valve 17 is opened to remain in the fluid reservoir 23. By analyzing the gas, it is possible to know whether or not harmful gas has leaked into the piping cover.

The joints 15 and 16 are open at both ends, but are not limited thereto.
That is, a quick joint that is a known self-sealing joint that incorporates a check valve at its end that automatically communicates with the hollow portion when both joint members are connected, and that is automatically shut off when separated. It may be changed to Thereby, the said valves 14 and 17 can be abbreviate | omitted and the effect which removes both joints becomes unnecessary.

  In the above embodiment, the fluid reservoir is a hollow body with a bottom, but the present invention is not limited to this. That is, you may connect the valve | bulb which opens the front-end | tip of a fluid storage part and can open and close this opening part. Thereby, since the fluid accumulated in the piping cover is discharged from the valve via the fluid reservoir when the valve is opened, the discharged harmful fluid can be appropriately stored in the container. Thereafter, if the piping cover is removed from the piping, the outflow of harmful fluid can be prevented.

  Further, the front end of the fluid reservoir is opened, and the opening can face the hollow portion of the container that is a bottomed hollow body so that harmful liquid leaking through the fluid reservoir can be accommodated in the container. It may be.

It is a perspective view of the piping cover of 1st Example. It is principal part sectional drawing which shows the Example of the piping cover of 1st Example. FIG. 3 is a view as seen from an arrow A in FIG. 2. It is principal part sectional drawing which shows the Example of the piping cover of 2nd Example. It is a block diagram which shows the other Example of the fluid storage part. It is explanatory drawing which shows another detection method of the fluid which penetrate | invaded in the fluid storage part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Piping cover 2 Fluid storage part 3 Fastener 3a Engagement member 3b Engagement member 4 Seal member 5 Hose band 10 Piping 11 Flange 12 Flange 13 Piping 14 Valve 15 Joint 16 Joint 17 Valve 20 Piping cover 22 Fluid storage part 23 Fluid Reservoir 30 Photoelectric switch 31 Micro switch

Claims (3)

      A cover for piping used in piping equipment in which a plurality of tubular bodies having hollow portions are connected via a connecting member such as a joint so that fluid flows through the hollow portions, and has a thin plate shape having flexibility A cover member in which a fastener member is connected to an end portion of the resin, and the end portion is connectable and detachable through the fastener member. In a pipe cover that is capable of covering a required part of the piping facility by being tightened to the pipe body by a tightening member, a bottomed bottom as a fluid reservoir that opens to the inner bottom of the pipe cover that covers the required part of the piping facility Piping cover characterized in that a hollow portion is recessed.       The fluid reservoir formed in the pipe cover of claim 1 is detachably connected through a self-sealing quick joint capable of communicating and blocking the hollow portion formed in the fluid reservoir. Special piping cover       A valve is attached to the fluid reservoir so that the tip of the fluid reservoir formed in the piping cover of claim 1 is opened and the opening and the base-side hollow portion can be communicated and blocked. Piping cover

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