JP2019113566A - Duplex meter unit - Google Patents

Abstract

To provide a duplex meter unit that holds strength even if connection stress of a water meter and stress resulting from ground displacement act on it.SOLUTION: A duplex meter unit comprises: a branch pipe 1 having one primary-side inflow pipe part 1a and a plurality of secondary-side branch pipe parts 1b whose pipe axes are parallel; a plurality of primary-side pipes 4 configured to be connectable with the branch pipe parts 1b, the number of primary-side pipes being the same as the number of branch pipe parts 1b; and a plurality of secondary-side pipes 5 provided in the same number as the plurality of primary-side pipes 4 so as to be paired with the respective primary-side pipes 4 on a pipe axis. Of the plurality of primary-side pipes 4 and the plurality of secondary-side pipes 5, each primary-side pipe 4 and each secondary-side pipe 5 paired on the pipe axis form a unit element 2 in which, in order to form a detachment part for a water meter M between them, they are united while kept separated by a predetermined distance in a direction of the pipe axis. The duplex meter unit further comprises a frame 3 fixing the unit element 2 by fixing each primary-side pipe 4 and each secondary-side pipe 5 paired on the pipe axis.SELECTED DRAWING: Figure 6

Description

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

  One water meter will be installed in one household, but the applicant is mainly for low-rise apartments such as flats, as shown in Fig. 9, for example, four water meters M for four households (four) Patent Document 1 discloses a compound meter unit that can be mounted in parallel on two meter box bodies 20.

  That is, in the compound meter unit of Patent Document 1, necessary pipes 23 and 24 including the water stop valve 21 and the check valve 22 are assembled in advance to the primary side and the secondary side of the meter box main body 20 at the time of factory shipment. At the site, after the water flow test, piping work is completed only by attaching a water meter M between the primary side piping 13 and the secondary side piping 14. In addition, by integrating several water meters M into one meter box main body 20, space can be saved rather than installing one water meter M for each household, and for several households You can do centralized reading. In addition, although the thing of 4 series type was illustrated in FIG. 9, the compound meter units of 2 series type, 3 series type, etc. exist besides this.

JP, 2009-293282, A

  The idea of integrating multiple water meters into one base or meter box has never been the case, and was proposed by the applicant for the first time by Patent Document 1 and functions such as space saving and centralized meter reading are satisfactory, but strength There is room for improvement in terms of

  That is, the compound meter unit of Patent Document 1 is fixed to the box main body 10, that is, the lower frame configured into upper and lower two halves by multiple sets of the primary side piping 23 and the secondary side piping 24; In the case where the single detachable portion is a pressure-bonding type, there is a possibility that the branch pipe and the bolt may be deformed due to the extension stress when connecting the water meter M. In addition, when compressive stress acts on the lower weir due to the secular displacement of the ground, similar deformation may occur.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a dual meter unit that maintains its strength even when a connection stress of a water meter or a stress due to ground displacement acts.

In order to achieve the above-described object, in the dual meter unit according to the present invention, a branch pipe having one inflow pipe portion on the primary side and a plurality of branch flow pipe portions having parallel pipe axes on the secondary side; A plurality of primary side pipes configured to be connectable to the pipe portion and provided in the same number as the plurality of branch flow pipe portions, and the plurality of primary sides are paired on the pipe axis with respect to the respective primary side pipes. Equipped with a number of secondary side piping provided in the same number as the piping,
Among the plurality of primary side pipings and the plurality of secondary side pipings, the primary side piping and the secondary side piping forming a pair on the pipe axis are in the pipe axial direction so as to form a water meter attachment / detachment portion therebetween. A unitary unitary unit is formed in a state of being separated by a predetermined distance,
It is characterized by providing the frame which fixes the said unit single body by fixing the primary side piping and secondary side piping which make a pair on the said pipe axis.

A plan view of a dual meter unit showing one embodiment of the present invention A-A line sectional view of FIG. 1 Same, left side view Same, right side view B-B line sectional view of FIG. 1 Same whole perspective view Explanatory drawing which illustrated the aspect of the division frame Side view sectional view showing another embodiment Plan view showing a conventional dual meter unit

  Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. FIG. 1 is a plan view of a double meter unit showing a three-link embodiment, FIG. 2 is a cross-sectional view taken along the line A-A, FIGS. 3 and 4 are side views of the left and right, and FIG. It is a B line sectional view. In these drawings, 1 is a branch pipe, 2 is a single unit, and 3 is a metal frame in which the branch pipe 1 and the unit 2 are fixed and integrated.

  The branch pipe 1 is integrally provided with three branch pipe portions 1b on the secondary side so that the pipe axes are parallel to each other with respect to the inflow pipe portion 1a provided at the center on the primary side, and the flow path is It is branched into three lines. The inflow pipe portion 1a functions as a connection end of the primary side water supply pipe.

  In the case of this embodiment, the unit single body 2 comprises three sets of the same structure, and the primary side pipe 4 including the water stop valve 4a whose end can be watertightly inserted into the branch pipe portion 1b of the branch pipe 1 respectively. And the secondary side piping 5 including the check valve unit 5a are provided coaxially at a constant interval. The end 5b opposite to the check valve unit 5a of the secondary side piping 5 functions as a connection end of the secondary side water supply pipe (a lead-in pipe into the home). Moreover, between primary side piping 4 and secondary side piping 5 is a desorption part of a water meter, and in this embodiment, a crimp joint is illustrated as a meter desorption structure. That is, when this crimped joint rotates the impeller 4b of the primary side pipe 4, its rotational movement is converted into an axial sliding movement of the movable receiving portion 4c by the internal mechanism, and the protrusion amount of the movable receiving portion 4c is By adjusting the distance, the distance from the fixed joint 5c provided on the secondary side pipe 5 is adjusted to be opposite to this, and the water meter is desorbed.

  On the other hand, the metal frame 3 has a rectangular shape in plan view consisting of four front and rear two frames 3a and 3b opposite in the axial direction of the unit single 2 and left and right two frames 3c and 3d opposite in the row direction of the single unit 2 similarly. It is a frame of a shape, and has a size surrounding the row group of the unit single unit 2. Then, the branch pipe 1 and the unit single unit 2 are fixed to the front and rear two frames 3a and 3b among the four frames.

  Specifically, three mounting holes 3e and 3f are respectively provided in the front and rear two frames 3a and 3b coaxially with the unit single unit 2 in the three rows. On the other hand, the end of each branch pipe portion 1b of the branch pipe 1, the insertion end of the primary side pipe 4 of the unit single unit 2, and the middle of the secondary side pipe 5 protrude outward in the left and right direction. Flanges 1c, 4d, 5d are provided. Then, with the branch pipe portion 1b of the branch pipe 1 being in communication with the mounting hole 3e with respect to the front frame 3a of the metal frame 3, both branch pipes 1 are on the outside and the primary side pipe 4 is on the inside. The flanges 1c and 4d are fixed by bolts 6 with the front frame 3a sandwiched therebetween. At this time, it goes without saying that the fitting portion of the primary side pipe 4 is inserted into the branch pipe portion 1b of the branch pipe 1 in a watertight manner, and the both communicate with each other. Further, the flange 5 d of the secondary side pipe 5 is fixed to the rear frame 3 b of the metal frame 3 with a bolt 7 in a state where the check valve unit 5 a is inserted into the mounting hole 3 f from the outside. By such a fixing mode, the whole of the branch pipe 1 and the end 5b of the secondary side pipe 5 project to the outside of the metal frame 3, and the meter attaching / detaching portion of the unit single unit 2 is located inside thereof.

  Therefore, when attaching a water meter to each unit unit 2, the connection stress acting on the primary side piping 4 and the secondary side piping 5 is transmitted to the front and rear two frames 3a and 3b, but the left and right two frames 3c ··· Since the displacement is restrained by 3d, deformation of the connection portion can be prevented.

  In this embodiment, a triple connection system in which three water meters are connected in parallel is shown, and the metal frame 3 is divided into three correspondingly, as is well shown in FIG. That is, the metal frame 3 in this embodiment divides the front and rear two frames 3a and 3b into three in units of mounting holes (units alone), and forms a U-shaped side frame 3g and 3h in plan view in a straight line And two sets of intermediate frames 3i. A single unit 2 is fixed to each of the side frames 3g and 3h, and a single unit 2 is fixed between the intermediate frames 3i. The side frames 3g and 3h are connected by an intermediate frame 3i, and the connecting portion is fixed by a bolt 8. Although the triple unit is configured by the configuration, the side frames 3g and 3h can be directly connected to each other. In this case, a dual unit can be configured. Further, if the intermediate frame 3i is added, it is also possible to increase the number of stations to four or five. Of course, the branch pipe 1 is provided with a branch pipe portion corresponding to the number of stations.

  Since the metal frame 3 is divided into the side frames 3g and 3h and the intermediate frame 3i as described above, the number of intermediate and secondary frames can be increased or decreased by changing the number of intermediate frames 3i with the side frames 3g and 3h as basic frames. It can correspond to

  In addition, it is simple to form one end of the connecting portion of each divided frame in an L-shape, and superimpose the other end on the step and bolt-fix. FIG. 7 illustrates three variations, and in FIG. 7A, the end of one side frame 3g is not processed, and L-shaped connecting portions 9 are formed at both ends of the other side frame 3h. Form. Further, an L-shaped connecting portion 9 is formed only at one end of the intermediate frame 3i. According to this example, the side frames 3g and 3h may be directly connected to each other to form two series, or the intermediate frames 3i may be added to form three or more series.

  On the other hand, in the example of FIG. 7 (b), the side frames 3h and 3g on the left and right sides become completely the same by adopting a side frame in which only one end is bent in an L shape to form the connecting portion 9. A two-run unit can be configured by directly connecting the connecting portion 9 in a state of back and forth inversion, and a triple-run unit or more can be configured by adding the intermediate frame 3i of the same shape as (a). . That is, while the example of (a) is a three-part system of an odd-shaped pair of side frames and an intermediate frame, in the example of (b), the side frames have the same shape, resulting in a two-part system. The number of types of components can be reduced and parts management can be facilitated.

  In the example of FIG. 7 (c), while the side frames 3h and 3g are not processed at the ends, L-shaped connecting portions 9 are formed at both ends of the intermediate frame 3i. In this example, in the case of three trains, since the side frames 3h and 3g have the same shape, a two-part system is configured. However, since the side frames 3h and 3g have the same shape, it is essential to use the intermediate frame 3i to form three or more stations.

  In this respect, when two or more intermediate frames 3i in the example of (c) are used, as shown in (d) of FIG. It is also possible. However, if it is triple (odd number of 3 or more), the side frame can be made the same shape, but if it is quadruple (even number of 4 or more), it becomes anomalous. You can think about it.

  In addition, since the compound meter unit of the present invention is integrated by the metal frame 3, it can be used alone, but in the case of embedding in the ground, as shown in FIG. It is preferable to accommodate in the meter box of the 2 division structure which consists of the upper rod 11 fitted to. In this case, the entire unit is simply mounted on the lower rod 10 and does not need to be fixed with a bolt, so that installation is easy and horizontal leveling can be performed based on the empty lower rod 10.

  Further, in the dual meter unit, the upstream is branched to provide a plurality of rows of primary side piping, and the same number of rows of secondary side piping are provided coaxially with each of the primary side piping, and between the primary side piping and the secondary side piping On the premise that a plurality of water meters are connected in parallel as the meter attaching / detaching portion, it is possible to adopt a configuration in which the unit is integrated by fixing it to a frame whose upper and lower surfaces are opened.

  That is, instead of the conventional lower-lid fixing, a dual meter unit as a unit base is a hoop-shaped metal frame in which mounting holes of the same number as the number of rows are provided in two frames facing each other on the primary side and the secondary side. Prepare.

  The metal frame is fixed to each of the front and rear two frames so as to communicate the primary side piping and the secondary side piping with the mounting holes, and the displacement of the primary side piping and the secondary side piping is integral with the front and rear two frames. Restrain in the left and right two frames. The front, rear, left, and right frames are simple to be plate-shaped if made of steel, but it is also possible to use a tubular or irregular tube depending on the type of metal, number of stations of water meter, cost etc. It is also possible to make the front, rear, left and right different shapes.

  In the above means, the connection stress of the water meter acts on the front and back two frames vertically, but since the displacement of the front and back two frames is restrained by the two left and right frames, axial deformation and torsion due to the stress Can be prevented.

  According to the dual meter unit, since the branch pipe and the plurality of units are fixed to the metal frame, the connection stress of the water meter acting on the unit alone is restrained by the left and right two frames of the metal frame to increase the strength.

  By the way, since the dual meter unit is a unit connecting two or more water meters in parallel, it is necessary to match the size (length in the row direction) of the metal frame according to the number of rows. Therefore, it is possible to adopt an integrated metal frame such as two stations only or three stations only.

  On the other hand, the front and rear two frames are divided in mounting hole units, and the side frame having a U-shaped planar view and the intermediate frame having a linear planar view can be connected to each other (these may be collectively referred to as a divided frame) And the combination thereof can correspond to various numbers of columns. That is, a pair of side frames can constitute a double unit, and by adding an intermediate frame between the side frames, a triple unit and a quadruple unit can be formed. If such a divided frame is adopted, the divided frame can be shared with a pair of side frames as a basic frame, and versatility can be provided.

  Thus, since the metal frame is divided into the side frame and the intermediate frame, it is more versatile and easier to manage components than preparing an integrated metal frame for each row number of water meters.

  The configuration for connecting the divided frames is optional, but if one end is formed in an L shape, the other end can be superimposed and connected to the step.

  In addition, although the configuration to fix the primary side piping and the secondary side piping to the front and rear two frames of the metal frame is optional, it is possible to provide an outward facing flange and fix this flange around the mounting hole with a bolt And it is easy. Moreover, while primary side piping is equipped with a water stop valve, secondary side piping is equipped with a non-return valve, It is preferable to fix so that these water stop valve and non-return valve may be located inside a metal frame.

  Furthermore, a branch pipe having a plurality of branch pipe portions upstream of the primary side pipe is provided, and in this branch pipe, an outward facing flange is provided in each branch pipe portion, and the flanges with the primary side pipe are used as front frames If the bolting is performed in a sandwiched state, the branch piping and the primary piping can be simultaneously fixed to the metal frame.

  In addition, if it further equips with the meter box of the 2 division | segmentation structure of a lower arm and an upper arm, and the whole unit is mounted and accommodated in the said lower arm, the underground type double meter box can be comprised. Here, the entire unit is already integrated by the metal frame, so it only needs to be mounted on the lower case. Thus, horizontal leveling can easily be performed by the lower arm of the empty condition. Further, since the edges of the entire unit and the lower heel are disconnected in a non-bonded state, even if stress due to ground displacement acts on the lower heel, it is difficult to be transmitted to the entire unit, and the strength of the entire unit is maintained.

  As described above, since it is only fixed and not fixed to the lower end of the meter box, even if the lower end receives displacement due to the secular stress of the ground, the influence on the entire unit can be reduced and the strength is maintained. be able to.

  On the other hand, a screw type and a crimp type can be considered as a specific configuration of the meter attaching / detaching portion in a single unit, but a crimped joint provided with a movable portion axially movable in one of the latter primary side piping or secondary side piping It is preferable because water meters can be easily attached and detached. The connection stress of the water meter generated at this time is suppressed by the metal frame.

Reference Signs List 1 branch pipe 1b branch pipe portion 2 unit single unit 3 metal frame 3g · 3h side frame 3i middle frame 4 unit single unit primary side piping 5 unit single unit secondary side piping

Claims (1)

It is configured to be connectable to a branch pipe having a plurality of branch pipes having a primary side inflow pipe section and a secondary side pipe axis parallel to each other, and the same number as the plurality of branch pipe sections. A plurality of primary side pipes provided, and a plurality of secondary side pipes provided in the same number as the plurality of primary side pipes so as to form a pair on the pipe axis with respect to the respective primary side pipes;
Among the plurality of primary side pipings and the plurality of secondary side pipings, the primary side piping and the secondary side piping forming a pair on the pipe axis are in the pipe axial direction so as to form a water meter attachment / detachment portion therebetween. A unitary unitary unit is formed in a state of being separated by a predetermined distance,
A dual meter unit comprising a frame for fixing the unit alone by fixing a pair of primary side piping and secondary side piping on the pipe axis.