JP2012127188A - Multiple meter unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a meter unit that enables a plurality of water meters to be installed in a space-saving manner and without any axial displacement with time.SOLUTION: A multiple meter unit comprises: a unit single body in which a section between primary-side piping including a water shut off valve and secondary-side piping including a check valve serves as a water meter attachment/detachment part; branch piping in which a plurality of branch pipes enabling the primary-side piping to be connected to one inflow pipe are integrally provided in such a manner that pipe axes of them are parallel to one another; and one base that enables the installation of the branch piping and the unit single bodies equal in number to the branch pipes. In the branch piping, the branch pipes are housed inside the base, and only the inflow pipe allowing the inflow of water and provided in the branch piping is provided in such a manner as to protrude to the outside of the base.

Description

  The present invention relates to a dual meter unit capable of connecting a plurality of water meters in parallel.

  Conventionally, a primary side joint equipped with a water stop cock and a secondary side joint equipped with a check valve are held in series on a base at a constant interval, and a water meter (quantitative water meter) is placed between both joints. The meter unit to be attached is well known, and since necessary members for the meter pipe are assembled in advance, the construction at the site can be performed efficiently, and the construction cost can be reduced and the construction period can be shortened (Patent Document 1).

The meter unit of Patent Document 1 is a unit in which one water meter is attached to one base unit (hereinafter referred to as a single unit), but two water meters can be simultaneously connected to one unit. (Hereinafter, a duplex unit) has also been proposed (Patent Document 2). According to this duplex unit, the meter piping of two dwelling units is completed by the construction of one unit, so that the on-site construction is further improved. In particular, the meter unit of Patent Document 2 is configured such that the primary side is branched into two flow paths, and a relay pipe is rotatably connected to each branch, and a water meter is attached to the relay pipe. Therefore, the opening angle of the two water meters can be arbitrarily adjusted in the range of 0 to 360 degrees, and can correspond to meter piping of various layouts.
Japanese Patent Laid-Open No. 11-93226 JP 2004-244865 A

  However, the meter unit of Patent Document 2 is the most compact with the opening angle set to 0 degrees because the entire secondary side (water meter meter, piping with check valve function and base), including the relay piping, rotates on the same plane. Even if it is folded into two, it is necessary to avoid interference between water meters, and an installation space having the same projected area as that in which two sets of single units as shown in Patent Document 1 are installed side by side is necessary. In addition, since the relay pipe can be rotated even after the installation is completed, there is a risk that the opening angle will fluctuate due to external forces such as distortion over time and earthquakes. In this case, there is a shaft misalignment between the unit and the water supply pipe. It may occur and develop into fatal problems such as measurement failure and water leakage. Furthermore, since it does not have a housing (box) that accommodates the entire unit, it can be assumed that it is exclusively installed in the pipe shaft of a housing complex. No consideration is given to how the body is adapted to the opening angle.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a meter unit capable of installing a plurality of water meters in a space-saving manner and without axial displacement. That is.

  In order to achieve the above-described object, in the present invention, a single unit having a water meter attachment / detachment portion between a primary side pipe including a stop cock and a secondary side pipe including a check valve, and an inflow pipe It is possible to install a branch pipe in which a plurality of branch pipes to which the primary pipe can be connected are integrally provided so that their pipe axes are parallel, and the same number of units as the branch pipe and the branch pipe. A dual meter unit including the branch pipe, wherein the branch pipe is housed inside the base, and only the inflow pipe for flowing water provided in the branch pipe is provided. Means were used that consisted of protruding to the outside of the base. In this means, the branch pipe branches the primary flow path of the meter unit by the number of branch pipes, and a plurality of water meters can be installed in one base through the number of unit units corresponding to the branch pipe. it can. Since the branch pipe has parallel pipe axes, the unit connected to the branch pipe is also installed on the base in a parallel state in which the flow path directions are parallel.

  In addition, it is preferable that a base is the said lower rod of the meter box which made the upper rod removable to the lower rod. This is because the compound meter unit can be embedded and installed.

  According to the present invention described above, water meters can be connected at the same time as the number of branch pipes of the branch pipe, so that site construction is more efficient than a single unit, and it is possible to further reduce the construction cost and the construction period. At the same time, meter reading and meter replacement can be easily performed by centralized management. In addition, since the branch pipe is formed by integrally forming a plurality of branch pipes, there is no movable portion that can rotate as in the conventional duplex unit, and therefore, there is no axial displacement. In addition, since multiple units are integrated into a single base, the number of parts is reduced and product costs can be reduced compared to conventional dual units that require multiple bases for each unit. It can be made smaller and the installation space can be made compact.

  Further, by adopting the lower arm of the meter box as a base, a compact buried type dual meter unit can be provided.

The top view of the compound meter unit concerning a first embodiment of the present invention. Same side view It is a top view of the compound meter unit which concerns on the modification of 1st embodiment, Comprising: (a) shows 3 series structure, (b) shows 4 series structure.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a plan view of a dual meter unit according to the first embodiment of the present invention, in which 1 is a base, 2 is a branch pipe fixed on the base, and 3 is a single unit. In the case of this embodiment, the base 1 is composed of a lower part of a meter box in which an upper part 1a is detachably attached to the lower part as shown in FIG. Further, the branch pipe 2 is formed by integrally providing two branch pipes 2b so that the pipe axes are parallel to one inflow pipe 2a. The inflow pipe 2a protrudes from the base 1 and can be connected to a water supply pipe (not shown) before branching to the two dwelling units, and the branch pipe 2b is fixed to the base 1 with a screw or the like so as to protrude from the lower surface of the branch pipe 2b. It is a thing.

  In this branch pipe 2, two sets of unit single bodies 3 are installed on the base in accordance with the number of branch pipes 2 b, and the secondary side of each unit single body 3 is a water supply pipe (not shown) for another dwelling unit. ). The unit unit 3 has the same structure, and is a crimping type in which a primary side pipe 4 in which a crimping movable joint 4b is connected to a water stopcock 4a to which the branch pipe 2b can be connected, and a check valve 5a is built in. A secondary pipe 5 formed by connecting a connecting pipe 5c to the fixed joint 5b is provided on the same axis at a constant interval. The primary side pipe 4 is connected to the branch pipe 2b in advance so as to be integrated with the base 1, and the secondary side pipe 5 is provided with a stay 5d that protrudes left and right on the lower surface of the connection pipe 5c with a screw or the like. It is fixed to and integrated with. In this way, each unit unit 3 installed on the base 1 is detachably attached with a water meter M with the joints 4b and 5b being detachable.

  That is, in the joint of this embodiment, the primary side movable joint 4b is slid in the axial direction so as to be able to contact and separate toward the end of the water meter M by turning the outer handle 4c. The water meter M is detachably sandwiched between them, but since this configuration is conventionally known, the details are omitted. In addition to the crimp joint, there is a connection method such as a so-called union nut method in which the water meter M is fixed with a cap nut. In the present invention, a conventionally known structure can be adopted as the detaching structure of the water meter M. it can.

  Here, the water meter M is provided with a cylindrical measuring unit K in the center, and the upper surface of the measuring unit K is set as a reading unit Y. The water meter M adjacent to the water meter M is secured while ensuring the visibility of the reading unit Y. In this embodiment, the tube axis distance L of the branch pipe 2b in the branch pipe 2 is twice the radius of the meter measurement unit K in plan view, that is, one piece of the meter measurement unit K. It is the same length as the diameter of the minute (the width in the present invention).

  As described above, according to the dual meter unit of the present embodiment, two water meters M can be simultaneously connected in parallel so that the flow channel directions are parallel to each other. Complete. In addition, because the meter M for water supply is as close as possible without contact between the measuring units, it should be a compact duplex unit with a smaller lateral width when two single units are placed side by side or compared to a conventional duplex unit. I was able to.

  In addition, the number of branch pipes 2b in the branch pipe 2, that is, the number of branches may be 3 or 4, and in this case, as shown in FIG. A large number of water meters M can be connected simultaneously. Furthermore, it is theoretically possible to increase the number of branches.

  However, the overall width increases as the number of branches increases. In other words, based on the dual duplex meter unit shown in FIG. 1, when the triple series (FIG. 3 (a)) or 4 series (FIG. 3 (b)) shown in FIG. It is necessary to make the radius 3 or 4 times that of the meter measurement unit K and expand it so that it is directly proportional to the number of branches.

DESCRIPTION OF SYMBOLS 1 ... Base 2 ... Branch piping 3 ... Unit single unit 4 ... Primary side piping 5 ... Secondary side piping M ... Water meter

Claims (1)

A single unit with a water meter attachment / detachment section between the primary side pipe including the stop cock and the secondary side pipe including the check valve,
A branch pipe formed integrally with a plurality of branch pipes to which the primary pipe can be connected to one inflow pipe so that their pipe axes are parallel;
A dual meter unit comprising the branch pipe and one base on which the same number of units as the branch pipes can be installed,
In the branch pipe, the branch pipe is housed inside the base, and only an inflow pipe for flowing water provided in the branch pipe is provided so as to protrude to the outside of the base. Double meter unit.

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