JP3023177U - Water meter installation piping - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a simple structure capable of easily replacing a water meter without interrupting or stopping running water. A flow path switching valve is provided on the primary side of the main pipe, and a water outlet side from the flow path switching valve is formed in a square shape, and
A water meter is provided on the upper side of the square shape, a sluice valve is provided on the lower side, and the lower side is joined to the secondary side of the main pipe.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a water meter (water meter) mounting pipe in a water facility.

[0002]

[Prior art]

 FIG. 3 shows a general mounting state of a water meter in a water supply facility. FIGS. 4A and 4B show a bypass pipe which is devised to work without water interruption when replacing the water meter. In the former FIG. 3, when water meter 1 is replaced, Inevitably, in the latter case of FIG. 4, by closing the sluice valve 2 and switching the flow path switching valve 3 to the bypass pipe 4 side as shown by B, the water meter 1 can be operated without causing water interruption. It can be replaced.

[0003]

[Problems to be solved by the device]

 Due to the above, in order to replace the water meter 1 without causing water interruption, the latter method is used exclusively today, but there is a fear that the water in the bypass pipeline will stagnant during normal times. Therefore, another bypass pipe (stagnation prevention pipe) 5 with a diameter smaller than that of the bypass pipe 4 is connected to the secondary pipe side of the sluice valve 2, and the water in the bypass pipe 4 becomes stagnant due to the differential pressure in the pipe line. Since the structure is not used, the structure is complicated, and especially when the amount of water used is small, the differential pressure between the primary side and the secondary side of the stagnation prevention pipe 5 becomes very small, and the expected effect can be obtained. It doesn't matter.

[0004]

[Means for Solving the Problems]

 In the present invention, a flow path switching valve is provided on the primary side of the main pipe, the water outlet side from the flow path switching valve is formed in a square shape, and the water meter is on the upper side of the square shape and the sluice valve is on the lower side. It is provided and the lower side is merged with the secondary side of the main pipe.

[0005]

[Embodiment of device]

 FIG. 1 shows the product of the present invention, where 1 is a water meter, 2 is a sluice valve, and 3 is a flow path switching valve, which is the same as that shown in the conventional example. In the present invention, the flow path switching valve 3 and subsequent parts of the main pipe are formed in a square shape, the water meter 1 is provided on the upper side of the square shape, and the sluice valve 2 is provided on the lower side. Is connected to the secondary side of the main pipe and merges.

FIG. 2 shows an example of a use state. Normally, as shown in FIG. 1, when the water passes from the flow path switching valve 3 to the water meter 1, it makes a U-turn to open the sluice valve. It flows through 2 and joins and flows to the secondary side of the flow path switching valve 3. When the water meter 1 is to be replaced, as shown in B, the flow path switching valve 3 is switched and the sluice valve 2 is closed, so that the water meter 1 can be removed without shutting off the water. Replacement work can be performed. Then, after the replacement of the water meter 1, the state returns to the state of FIG.

[0007]

[Effect of device]

 The present invention is configured as described above, and although the water outlet side after the flow path switching valve 3 is formed in a square shape and is configured as a bypass pipe, a water pipe is normally used in the pipe line during normal use. Since it does not become stagnant, the structure can be simplified and hygiene is excellent without arranging stagnant prevention tubes in parallel as in the conventional case.

[Brief description of drawings]

FIG. 1 is an explanatory view of a product of the present invention.

FIG. 2 is an explanatory view of a state in which the water meter is replaced above.

FIG. 3 is an explanatory diagram of a conventional product.

FIG. 4 is another explanatory view of the conventional product.

[Explanation of symbols]

 1 Water meter 2 Gate valve 3 Flow path switching valve 4 Bypass pipe 5 Stagnation prevention pipe

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Claims (1)

[Scope of utility model registration request] 1. A flow path switching valve is provided on the primary side of the main pipe, and a water outlet side from the flow path switching valve is formed in a square shape, and
A water meter mounting pipe characterized in that a water meter is provided on the upper side of the square shape, a sluice valve is provided on the lower side, and the lower side is joined to the secondary side of the main pipe.