JP4928004B2 - Duplex meter unit - Google Patents

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, the present invention achieves the above-described object. In the present invention, a water meter is connected between a primary side pipe including a stop cock and a secondary side pipe including a check valve. A unit unit as an attachment / detachment part, and a branch pipe formed integrally with a plurality of branch pipes to which the primary side pipe can be connected to one inflow pipe so that their pipe axes are parallel in parallel on the same plane Then, a means of constituting a dual meter unit from this branch pipe and a single base capable of installing the same number of units as the branch pipes was used. In this means, the branch pipe branches the primary side 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 the site construction is more efficient than the single unit, and the construction cost can be further reduced and the construction period can be shortened. 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, as shown in FIG. 2, the base 1 is composed of a lower part of a meter box in which an upper part 1 a is detachably attached to the lower part. 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 a stay 2c that protrudes from the lower surface of the branch pipe 2b is fixed to the base 1 with screws or the like. Is.

  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 as attachment / detachment portions.

  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, since the meter for water supply M is as close as possible without contact between the measuring units, it may be a compact duplex unit having a small lateral width when two single units are arranged side by side or compared to a conventional duplex unit. did it.

  In addition, the number of branch pipes 2b in the branch pipe 2, that is, the number of branches may be 3 or 4. 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. 2A) or 4 series (FIG. 2B) shown in FIG. It is necessary to expand to 3 or 4 times the radius of the measurement unit K so that it is directly proportional to the number of branches.

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

Claims (2)

A single unit having a water meter attachment / detachment part between a primary side pipe including a water stop cock and a secondary side pipe including a check valve, and a plurality of the primary side pipes connectable to one inflow pipe A branch pipe in which the pipe shafts are integrally provided so that their pipe axes are parallel to each other on the same plane, and a base capable of installing the branch pipe and the same number of unit units as the branch pipes; A dual meter unit characterized by comprising: The dual meter unit according to claim 1, wherein the base is the lower rod of the meter box in which the upper rod is detachable from the lower rod.

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