JP4927788B2 - 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, in the present invention, a unit single unit having a water meter attachment / detachment portion between a primary side pipe including a water stop cock and a secondary side pipe including a check valve, and the primary side pipe A multi-meter from a branch pipe in which a plurality of branch pipes connectable to each other are provided so that their pipe axes are parallel, and a single base on which the same number of units as the branch pipes and the branch pipes can be installed The means of constructing the unit 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.

  Usually, a water meter is provided with a cylindrical measuring unit in the center, and this measuring unit protrudes to the left and right, so in the present invention, the unit unit is spaced at an interval so that adjacent measuring units of water meters do not interfere with each other. As a specific means, a branch pipe has a pipe axis distance between adjacent branch pipes that is equal to or less than the lateral width of the measuring part of the water meter in plan view. In order to prevent the measurement unit from interfering, means for installing the water meter attachment / detachment part back and forth or / and up and down and installing it on the base is used. At this time, it is preferable that the branch pipe is configured such that the lengths of the adjacent branch pipes are different. According to this configuration, adjacent unit units will be parallel back and forth along the flow path direction, and the adjacent water meter will not interfere with the measurement unit in the axial direction accordingly. This is because the interval can be further reduced.

  Moreover, it is preferable that the opening position of an adjacent branch pipe is displaced up and down in the branch pipe. According to this configuration, the adjacent unit units are three-dimensionally parallel to each other, and the measuring unit of the adjacent water meter does not interfere with each other according to this, so that the interval between the unit units can also be reduced.

  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.

  In particular, in the present invention, the branch pipe has a tube axis distance between adjacent branch pipes in plan view that is equal to or less than the lateral width of the measurement unit of the water meter, so that the unit measurement unit does not interfere with the adjacent unit measurement unit. Since the water meter desorption part is installed in the base with front and back or / and up and down, the measuring part of the water meter that has the widest width in the meter piping is flat (two-dimensional) or three-dimensional or even three-dimensional. Therefore, the distance between the unit units can be narrowed, and the width of the base on which the unit is installed is also narrowed. In addition, as a means for adjusting the mounting position of a single unit in this way, the branch lengths of adjacent branch pipes are made different from each other, so that the meter can be configured with a simple configuration without changing the structure of the single unit. The entire unit can be made compact while avoiding interference of the measurement unit. Furthermore, if the opening position of the branch pipe adjacent to the branch pipe is displaced up and down, the measurement unit can be moved up and down three-dimensionally to avoid interference, and similarly, the interval between unit units can be reduced. The interference can be avoided three-dimensionally by making the length of the branch pipe and the opening vertical position different at the same time.

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

  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.

  Therefore, an example in which the lateral width is not directly proportional to the number of branches and can be made more compact is shown in FIG. 4 as a second embodiment. That is, in this second embodiment, three branch pipes 11, 12, 13 are formed from the branch pipe 10, and the length of the central branch pipe 12 is made longer than the adjacent branch pipes 11, 13. Yes. With this configuration, the water meter M connected to the central branch pipe 12 is positioned rearward (closer to the secondary side) than the water meter M connected to the other branch pipes 11 and 13. Therefore, in this structure, the measurement part K of the adjacent water meter M is moved back and forth to avoid interference, and the distance between the water meters is narrowed rather than being lined up on the same line as in FIGS. 1 and 3. be able to. Although the number of branch pipes is three, the number of branch pipes may be two or four or more as long as the lengths of adjacent branch pipes are different.

  Further, as shown in FIG. 5, in the case where the opening positions of the three branch pipes 11, 12, and 13 are formed so as to move up and down between adjacent ones, the interference of the water meter M is three-dimensional. Can be avoided. Also in this case, the number of branch pipes is not limited to three as long as the opening positions of adjacent branch pipes move up and down, and may be two or four or more.

  Furthermore, as shown in FIG. 6, it is possible to make both the length of the adjacent branch pipe and the opening position different simultaneously. In this case, the interference of the water meter M is avoided in three dimensions, and the compact. Can be achieved.

  When the opening position of the branch pipe is displaced up and down, the projected area can be further reduced by enabling the installation such that the adjacent water meter M is partially overlapped in plan view. Needless to say, the visibility of the reading unit (including opening and closing of the meter cap) and the tool space for attaching and detaching the meter are secured. In addition, as shown in FIG. 7, the base at this time is preferably provided with stepped portions 20, 21 and 22 corresponding to the height difference of the opening position, and the unit unit 23 is installed and fixed to each stepped portion.

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. The top view of the compound meter unit concerning a second embodiment of the present invention. The perspective view which showed the other structural example of branch piping The perspective view which showed the further another structural example of branch piping Sectional view showing another configuration example of the base

Explanation of symbols

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

Claims (5)

A single unit having a water meter as an attachment / detachment part between a primary side pipe including a stop cock and a secondary side pipe including a check valve, and a plurality of branch pipes to which the primary side pipe can be connected are pipe shafts. And a branch base that enables the same number of units as the branch pipes and the branch pipes to be installed. The branch pipes are adjacent branch pipes in plan view. The tube axis distance is less than the horizontal width of the measuring part of the water meter, and the unit unit is installed on the base with the water meter attaching / detaching part back and forth so that the adjacent unit unit and the meter measuring part do not interfere with each other A dual meter unit. A single unit having a water meter as an attachment / detachment part between a primary side pipe including a stop cock and a secondary side pipe including a check valve, and a plurality of branch pipes to which the primary side pipe can be connected are pipe shafts. And a branch base that enables the same number of units as the branch pipes and the branch pipes to be installed. The branch pipes are adjacent branch pipes in plan view. The tube axis distance is equal to or less than the width of the measuring unit of the water meter, and the unit unit is installed on the base by moving the demounting part of the water meter up and down so that the adjacent unit unit and the meter measuring unit do not interfere with each other. A dual meter unit. The dual meter unit according to claim 1 or 2, wherein the branch pipe has a different length of an adjacent branch pipe. 3. The dual meter unit according to claim 2, wherein the branch pipe is formed by raising and lowering the opening positions of adjacent branch pipes. The dual meter unit according to any one of claims 1 to 4 , 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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