JP5952545B2 - Duplex meter unit - Google Patents

Description

  The present invention relates to a unit structure of piping that allows a plurality of water meters to be connected in parallel.

  Although one water meter is installed in one household, the present applicant is mainly for low-rise apartments such as apartments. For example, as shown in FIG. A dual meter unit that can be mounted in parallel on one meter box body 20 is disclosed (Patent Document 1).

  That is, in the dual meter unit of Patent Document 1, necessary pipes 23 and 24 including a stop cock 21 and a check valve 22 are assembled in advance on the primary side and the secondary side of the meter box body 20 at the time of factory shipment. In the field, after the water flow test, the piping work is completed simply by installing the water meter M between the primary side pipe 13 and the secondary side pipe 14. In addition, by consolidating several water meters M into one meter box body 20, it is possible to save space rather than installing one water meter M for each household. Can be intensively metered. In FIG. 9, a four-unit type is illustrated, but there are other dual meter units such as a two-unit type and a three-unit type.

JP 2009-293282 A

  The idea of consolidating a plurality of water meters into one base or meter box has never been proposed before, and was first proposed by the present applicant in Patent Document 1, and although functions such as space saving and centralized meter reading are satisfactory, There was room for improvement.

  That is, in the dual meter unit of Patent Document 1, a plurality of sets of primary side pipes 23 and secondary side pipes 24 are fixed to the box body 10, that is, a lower gutter configured in two upper and lower parts by bolts or the like. When the single attachment / detachment portion is a pressure bonding type, there is a risk that the branch pipe or the bolt may be deformed by an extensional stress when the water meter M is connected. In addition, when a compressive stress is applied to the lower arm due to the secular displacement of the ground, there is a possibility that the same deformation occurs.

  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 strength even when a connection stress of a water meter or stress due to ground displacement acts.

In order to achieve the above-described object, in the present invention, a plurality of rows of primary pipes are provided by branching upstream, and the same number of rows of secondary pipes are provided coaxially with each of the primary pipes. By connecting each of the meter attachment / detachment parts with a water meter between the primary side pipe and the secondary side pipe, and connecting the same number of water meters in parallel as the total number of water meters in parallel. On the premise that the unit is a meter unit, means for integrating the unit by fixing the unit to a frame having an open top and bottom surface was used.

  That is, in place of the conventional lower anchor fixing, the present invention includes a hoop-like metal frame provided with the same number of mounting holes as the number of rows in two frames before and after the primary and secondary sides confront each other as a unit base. .

  The metal frame fixes the primary side pipe and the secondary side pipe to the front and rear two frames so as to communicate with the mounting hole, and the displacement of the primary side pipe and the secondary side pipe is integrated with the front and rear two frames. Restrain with two left and right frames. The front, rear, left and right frames can be easily made into a plate shape if they are made of steel, but they can also be made into tubes, deformed tubes, etc. depending on the type of metal, the number of water meter stations, 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 perpendicularly to the two front and rear frames, but the displacement of the two front and rear frames is constrained by the two left and right frames. Can be prevented.

  By the way, since the present invention is a unit for connecting two or more water meters in parallel, it is necessary to adjust the size of the metal frame (length in the column direction) according to the number of columns. Therefore, it is possible to employ an integrated metal frame such as dedicated for two stations or dedicated for three stations.

  On the other hand, the front and rear two frames are divided in units of mounting holes, and a U-shaped side frame that can be connected to each other and an intermediate frame that is linear in a plan view (these may be collectively referred to as a divided frame). The number of columns can be accommodated by the combination. That is, a duplex unit can be configured with only one pair of side frames, and a triple or quadruple unit can be configured by adding an intermediate frame between the side frames. If such a divided frame is adopted, the divided frames can be shared by using a pair of side frames as a basic frame, and versatility can be provided.

  Although the structure for connecting the divided frames is arbitrary, if one end is formed in an L shape, the other end can be overlapped and connected to the step.

  In addition, the primary side pipe and the secondary side pipe can be fixed to the two front and rear frames of the metal frame, but it is certain that an outward flange is provided and this flange is fixed around the mounting hole with bolts. And simple. Moreover, it is preferable that the primary side pipe is provided with a water stop cock and the secondary side pipe is provided with a check valve, and the water stop cock and the check valve are fixed so as to be located inside the metal frame.

  In addition, a branch pipe having a plurality of branch pipe portions is provided upstream of the primary side pipe. Also, for this branch pipe, an outward flange is provided in each branch pipe portion, and the flange with the primary side pipe is attached to the front frame. If the bolts are fixed in the sandwiched state, the branch pipe and the primary side pipe can be fixed to the metal frame at the same time.

  In addition, if a meter box having a two-part structure of a lower gutter and an upper gutter is further provided and the entire unit is placed and accommodated in the lower gutter, a buried underground meter box can be configured. Here, since the whole unit is already integrated by the metal frame, it is only necessary to put it on the lower arm. Therefore, the leveling can be easily performed by the empty armpit. Further, since the edges of the entire unit and the lower arm are cut in a non-coupled state, even if a stress due to ground displacement acts on the lower arm, it is difficult to transmit to the entire unit, and the strength of the entire unit is maintained.

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

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

  In addition, 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 number of water meter columns.

  Furthermore, since it is not fixed to the lower arm of the meter box, it is only placed, so even if the lower arm receives displacement due to the stress of the ground over time, the influence on the entire unit can be reduced and the strength can be maintained. it can.

The top view of the compound meter unit which showed one Embodiment of this invention AA line sectional view of FIG. Same side view Same side view BB sectional view of FIG. Same perspective view Explanatory drawing which illustrated the aspect of the division | segmentation 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 accompanying drawings. FIG. 1 is a plan view of a dual meter unit showing a triple embodiment, FIG. 2 is a cross-sectional view taken along line AA, FIGS. 3 and 4 are side views on the left and right sides, and FIG. It is B line sectional drawing. 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 single unit 2 are fixed and integrated.

  The branch pipe 1 is formed by integrally providing three branch pipe parts 1b on the secondary side so that the pipe axes thereof are parallel to each other with respect to the inflow pipe part 1a provided in the center of the primary side. Branched into three systems. The inflow pipe portion 1a functions as a connection end portion of the primary side water supply pipe.

  In the case of this embodiment, the unit single unit 2 includes three sets having the same structure, and each includes a primary side pipe 4 including a stop cock 4a whose end can be fitted into the branch pipe 1b of the branch pipe 1 in a watertight manner. The secondary side pipe 5 including the check valve unit 5a is provided coaxially at a constant interval. An end 5b of the secondary side pipe 5 opposite to the check valve unit 5a functions as a connection end of a secondary side water supply pipe (intake pipe into the house). Moreover, between the primary side piping 4 and the secondary side piping 5 is the attachment / detachment part of the water meter, and in this embodiment, the crimp joint is illustrated as a meter attachment / detachment structure. That is, in this crimp joint, when the impeller 4b of the primary side pipe 4 is rotated, the rotational motion is converted into the axial sliding motion of the movable receiving portion 4c by the internal mechanism, and the protruding amount of the movable receiving portion 4c is reduced. By adjusting, the distance with the fixed joint 5c provided in the secondary side piping 5 facing this is adjusted, and the water meter is attached or detached.

  On the other hand, the metal frame 3 is rectangular in plan view, consisting of four walls of front and rear two frames 3a and 3b that face the unit unit 2 in the axial direction, and left and right two frames 3c and 3d that face the unit unit 2 in the row direction. It is a frame of a shape and has a size that surrounds a row group of unit units 2. Of the four frames, the branch pipe 1 and the unit unit 2 are fixed to the front and rear two frames 3a and 3b.

  Specifically, three mounting holes 3e and 3f are provided in each of the front and rear two frames 3a and 3b so as to be coaxial with the three rows of unit units 2 respectively. On the other hand, the end of each branch pipe 1 b of the branch pipe 1, the fitting end of the primary side pipe 4 of the unit single unit 2, and the middle of the secondary side pipe 5 squeeze outward to the left and right. Flange 1c * 4d * 5d is provided. Then, with the branch pipe 1 b of the branch pipe 1 in communication with the mounting hole 3 e with respect to the front frame 3 a of the metal frame 3, both the branch pipe 1 is on the outer side and the primary side pipe 4 is on the inner side. The flanges 1c and 4d are fixed with bolts 6 with the front frame 3a interposed therebetween. At this time, it goes without saying that the fitting portion of the primary side pipe 4 is fitted into the branch pipe portion 1b of the branch pipe 1 in a watertight manner, and the two communicate with each other. Further, the secondary pipe 5 has a flange 5d fixed with bolts 7 in a state in which the check valve unit 5a is inserted from the outside into the mounting hole 3f with respect to the rear frame 3b of the metal frame 3. With such a fixing mode, all of the branch pipes 1 and the end parts 5b of the secondary side pipes 5 protrude to the outside of the metal frame 3, and the meter attaching / detaching part of the unit unit 2 is located inside thereof.

  Therefore, when a water meter is attached to each unit unit 2, the connection stress acting on the primary side pipe 4 and the secondary side pipe 5 is transmitted to the front and rear two frames 3a and 3b. Since the displacement is restrained by 3d, it is possible to prevent the connection portion from being deformed.

  In this embodiment, a triple system in which three water meters are connected in parallel is shown, and as shown in FIG. 6, the metal frame 3 is divided into three parts correspondingly. That is, the metal frame 3 in this embodiment is divided into three front and rear frames 3a and 3b in units of mounting holes (unit unit), and a pair of side frames 3g and 3h having a U-shape in plan view are linear in plan view. Two intermediate frames 3i are provided. One unit 2 is fixed to each of the side frames 3g and 3h, and one set of 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 this configuration, the side frames 3g and 3h can also be directly connected, and in this case, a dual unit can be configured. Further, if the intermediate frame 3i is added, it is possible to increase the number of stations, such as a four- or five-station system. Of course, the branch pipe 1 is provided with a branch pipe section 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 in this way, the number of the intermediate frames 3i can be increased or decreased by using the side frames 3g and 3h as the basic frame, thereby increasing the number of stations such as two or three. It can correspond to.

  In addition, it is simple that the connection part of each division | segmentation frame forms an L-shape at one end, and fixes the bolt by overlapping the other end on the step. FIG. 7 illustrates three variations. In FIG. 7A, the end portion of one side frame 3g is untreated, and L-shaped connecting portions 9 are provided at both ends of the other side frame 3h. Is forming. 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 can be directly connected to form two stations, or the intermediate frame 3i can be added to form three or more stations.

  On the other hand, in the example of FIG. 7B, the left and right side frames 3h and 3g are completely the same shape by adopting a side frame in which only one end is bent into an L shape to form the connecting portion 9. In addition, a two-unit unit can be configured by directly connecting the connecting portion 9 in the front-rear inverted state, and a unit of three or more units can be configured by adding an intermediate frame 3i having the same shape as (a). . That is, while the example in (a) is a three-part system consisting of a pair of odd-shaped side frames and an intermediate frame, in this example (b), the side frame has the same shape, so it becomes a two-part system and the necessary divided frames. The number of types can be reduced, and parts management becomes easy.

  In the example of FIG. 7C, the end portions of both side frames 3h and 3g are not processed, and L-shaped connecting portions 9 are formed at both ends of the intermediate frame 3i. In this example, since the side frames 3h and 3g have the same shape in the case of three stations, a two-part system is configured. However, since the side frames 3h and 3g have the same shape, it is essential that the intermediate frames 3i are used for three or more stations.

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

  In addition, since the compound meter unit of the present invention is integrated with the metal frame 3, it can be used alone, but when embedded in the ground, as shown in FIG. It is preferable to accommodate in a meter box having a two-part structure composed of an upper collar 11 that fits together. In this case, since the entire unit is simply placed on the lower arm 10 and does not need to be fixed with bolts, it is easy to assemble, and the leveling can be performed based on the empty lower arm 10.

1 Branch pipe 1b Branch pipe section 2 Unit single unit 3 Metal frame 3g · 3h Side frame 3i Intermediate frame 4 Unit single unit primary pipe 5 Unit single unit secondary pipe

Claims (7)

A plurality of primary side pipes are provided by branching upstream, and the same number of secondary side pipes are provided coaxially with the primary side pipes, respectively, between the pair of primary side pipes and secondary side pipes that are coaxial. As a meter attaching / detaching portion, by connecting one water meter for each meter attaching / detaching portion, a dual meter unit for connecting the same number of water meters in parallel as the number of columns as a whole ,
A hoop-shaped metal frame provided with mounting holes equal in number to the number of rows on the front and rear frames facing the primary side and the secondary side,
The primary side pipe and the secondary side pipe are fixed to the front and rear frames so as to communicate with the mounting hole, and the displacement of the primary side pipe and the secondary side pipe is restrained by the left and right frames integrated with the front and rear frames,
The metal frame is composed of a pair of U-shaped side frames that can be connected to each other by dividing the front and rear frames in units of mounting holes, and an intermediate frame that is linearly connectable between the side frames. This is a dual meter unit. Side frame and the intermediate frame is double meter unit according to claim 1, wherein by forming a one end in an L-shape. The dual meter unit according to claim 1 or 2, wherein an outward flange that can be fixed with a bolt is provided around the mounting hole in each of the primary side pipe and the secondary side pipe. Any with the primary pipe includes a stop cock, secondary pipe is provided with a check valve, of the claims 1 to 3, these stop cock and check valve is fixed so as to be located inside the metal frame A compound meter unit according to claim 1. Comprising a branch pipe having a plurality of branch pipe portion upstream of the primary piping, according to claim 3 provided with a movable flange fastened by flanges and bolts of the primary pipe via a front frame of the metal frame to the branch pipe portion or 4. The dual meter unit according to 4 . The dual meter unit according to any one of claims 1 to 5 , further comprising a meter box having a two-part structure of a lower rod and an upper rod, wherein the entire lower box is placed and accommodated. The dual meter unit according to any one of claims 1 to 6 , wherein the meter attaching / detaching portion is a crimp joint provided with a movable portion that is movable in the axial direction on one of the primary side pipe and the secondary side pipe.

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