JP2006225984A - Connection device of water meter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection device of a water meter having such a connection structure that it is applicable to both a regular water meter and special water meters. <P>SOLUTION: This connection device of the water meter comprises a connection pipe 4 and a pair of connection parts 1a and 1b. The connection part comprises connection parts 5a and 5b and connection body parts 6a and 6b. These connection parts are connected to each other through connection pipes. Springs 3a and 3b and water meter position correction rings 2a and 2b are inserted between a sleeve 7 forming the connection body part 6a and a water meter guide 8 and between a check valve seat 10 and a water meter guide 9. By the water meter position correction rings, the centerlines of the water meter 100, the sleeve 7, and the check valve seat 10 are aligned with each other. As a result, both the regular water meter and the special water meter can be connected to the connection device of the water meter. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connection device for connecting a water meter in a narrow pipe space such as a pipe shaft.

  Conventionally, water meters connected in the middle of water pipes need to be replaced with the passage of a defined expiration date. Therefore, a connecting device for fixing the water meter in a predetermined position is connected in the middle of the water pipe, and the water meter is connected to the connecting device in a detachable state.

  As a prior art, for example, a connection device for a water meter disclosed in Patent Document 1 is known. As shown in FIG. 4, the connecting device of this water meter has a pipe joint having a plurality of angle restricting holes that can freely correspond to the pipe direction, and can use this pipe joint to freely correspond to the pipe direction. The length of the water tank installation place is kept constant, and it has a structure that allows easy re-installation of the water meter without causing pipe displacement. The pipe joint used for the connection device of the water meter includes an elbow body 20 having a plurality of angle restriction holes 121 on the outside and a support ring on the inner periphery, a first groove / second groove, an angle restriction protrusion (protrusion screw 122). When the elbow body 20 is fitted to the connection body portion 6a, the support ring is fitted to the first groove, and the predetermined angle restriction hole 121 is aligned with the angle restriction protrusion. Then, the elbow body 20 is pushed into the connecting body portion 6a, and the angle restricting hole 121 is locked to the angle restricting protrusion while the support ring is fitted in the second groove. The connection device of the water meter is composed of a coupling pipe 4 and a pair of connection portions 1a and 1b. The connection portion is composed of connection portions 5a and 5b and connection body portions 6a and 6b. Connected by the connecting pipe 4, the connecting body portion 6a constitutes a pipe joint. A metering device 100 is mounted on the metering device connecting device.

The water meter is a normal water meter that is normally distributed even with a water meter of the same diameter, and a special type with a slightly smaller outer diameter due to large city specifications and special application specifications. Meters are also on the market.
When connecting a special type water meter to a connection device for a normal type water device, the center line of the water meter is lower than the center line position of the connection device of the water meter because the outer diameter of the connection part is slightly smaller. In some cases, the water meter connection surface packing part of the water meter connection device may be deficient in water leakage or the like.
In such an environment, when installing a metering device connection device, check whether the metering device type is a normal type or a special type. Must be selected. In particular, when the use of a normal type water meter and a special type water device are mixed in the same area, the difference in diameter between the two types is small, so that the determination is very difficult. Further, when the installed water meter is changed to another type, there is an economical problem because the installation device of the installed water device is forced to be replaced.

Moreover, when installing the connecting device of a water meter, a pressure reducing valve may be attached to the primary side. In order to measure the pressure reduced by the pressure reducing valve, it was necessary to attach a measuring device such as a pressure gauge to the secondary terminal or to install a dedicated inspection device instead of the water meter.
Japanese Patent Application No. 2003-405613

  The present invention has been made under such circumstances, and has a connection device for a water meter having such a connection structure that can be applied to both a normal water meter and a special water meter, and such amount. In a water device connection device, a water device connection device having a mounting portion such as a measuring instrument on the secondary side is provided.

  The present invention includes a connection pipe and a pair of connection portions provided on both sides of the connection pipe, and the pair of connection portions includes a connection portion and a connection body portion to which the connection pipe is attached, respectively. The connection body portion of the pair of connection portions is such that one connection body portion has a water pipe connection portion and a water meter connection portion at both ends, and the other connection body portion has a convex joint connection portion at both ends. And the water meter connection part of the one connecting body part, the first water meter guide holding the one end of the water meter and having a cylindrical part, and the one water meter connection part. A cylindrical check valve seat for supporting a check valve disposed between the water pipe connecting portion of the connecting body portion and the water meter connecting portion, and the cylinder of the first water meter guide A first metering device position correction ring for holding the central axis of the metering device in an appropriate position is interposed between the checkered portion and the check valve seat, The water meter connecting portion of the connecting body has a sleeve that holds the other end of the water meter and a screw handle that drives the sleeve, and the sleeve holds the other end of the water meter. A second metered water guide having a cylindrical part, and one end of the sleeve is inserted into a cylindrical part of the second metered water guide, and the second metered water guide is cylindrical. A second metering device position correction ring for holding the central axis of the metering device in an appropriate position is interposed between the portion and one end of the sleeve, and the connecting pipe is spaced from the pair of connecting parts. The convex joint connection part of the other connecting body part has a water pipe connection part at one end and an opening part at the other end, and the convex joint connection part fits into the opening part at the other end. A cylindrical elbow body to be joined, the convex joint connecting portion at one end, and another member connecting portion at the other end, One side fitting portion of the Jo joint connecting portion is characterized by connecting device water meter using a pipe joint comprising a cylindrical connector to be fitted to the elbow body opening.

This metering device position correction ring has the outer diameter of the contact surface substantially the same as the outer diameter of the normal metered water meter, and the inner diameter of the contact surface is slightly larger than the outer diameter of the special metered water meter. The water meter position correction ring has a shape having a plurality of chipped portions on both contact surfaces.
By installing a connecting pipe, the length of the water meter installation place installed on the ground, the so-called span, can be kept constant, and re-installation of the water meter can be facilitated without causing piping displacement during re-installation. It can be carried out. In addition, by using a sleeve and a screw handle that fixes the water meter by advancing and retracting the sleeve at one water meter connection portion of the pair of connection portions, the re-installation work can be performed sufficiently accurately with little effort even in a small space. It can be performed.

  The one connecting body portion may be constituted by a socket body, and a check valve unit may be attached to the socket body. A pedestal for placing the water meter at a predetermined position may be attached to the connection pipe. A water supply member may be attached to the water pipe connecting portion side of the elbow body constituting the pipe joint. The water supply member may be a water stop cock (water stop valve, water stop valve), a check valve, or a pressure reducing valve. A leg portion may be attached to each of the pair of connection portions. The screw handle and the other connecting part may have fixing holes for binding and fixing each other. In such a water meter connection device, a mounting portion such as a measuring instrument can be provided on the secondary side.

  The present invention uses a metering device position correction ring for a metering device connecting device, so that it can be used for both a normal metering device and a special metering device having an outer diameter slightly smaller than that of the ordinary metering device. It is possible to provide a connecting device for a water meter having a connection structure that can be applied, and in such a connecting device for a water meter, providing a mounting portion such as a measuring instrument on the secondary side makes measurement easy It is possible to provide a connecting device for a water meter.

  Hereinafter, embodiments of the invention will be described with reference to examples.

Embodiment 1 will be described with reference to FIGS.
FIG. 1 is a front cross-sectional view of a connecting device for a water meter according to the first embodiment, and FIG. 2 is a view of a water meter guide, a water meter position correcting ring, a ring packing, and a sleeve of the other connecting body according to FIG. Front sectional view and front view of the spring, and each right side view of the section along the line AA, BB, CC of the sectional view, FIG. 3 is a cap of one connecting body part according to FIG. Front cross-sectional view of water meter guide, water meter position correction ring, ring packing and check valve seat, front view of spring, and DD, EE, FF, GG line of the cross-sectional view 4 is a front cross-sectional view of a conventional water meter connecting device to which a water meter is attached, and FIGS. 5 and 6 are generally used in the conventional water meter connecting device of FIG. 7 is a partial cross-sectional view of the front of a connecting device for a water meter for explaining a malfunction when a special water meter having an outer diameter substantially smaller than that of a water meter is installed. FIG. 8 and FIG. 9 illustrate a process of attaching the normal type water meter to the connection device of the water meter of FIG. 7. FIG. 10 is a front sectional view of a connecting device for a water meter, FIG. 10 is a front sectional view of a connecting device for a water meter of Example 1 with a special type water meter attached, and FIGS. 11 and 12 are water meters of FIG. FIG. 13 is a front partial cross-sectional view of the connecting device of the water meter for explaining the process of attaching the special type water device to the connecting device of FIG. It is a front view which shows the state installed in.

First, referring to FIG. 1, a connection device for a water meter will be described.
The connecting device for a water meter according to this embodiment includes a pair of connecting portions 1a and 1b, and the connecting portions 1a and 1b are connected to the connecting portions 5a and 5b and the connecting portions 5a and 5b. It consists of body parts 6a and 6b. In this embodiment, the connecting portion and the connecting body portion are integrally formed. However, in the present invention, separate members may be joined using a connecting tool or the like.
The connecting body portion (the other connecting body portion) 6a has a convex joint connecting portion and a water meter connecting portion 16a, and the connecting body portion 6b has a water pipe connecting portion 15 and a water meter connecting portion 16b. ing. The connecting body portion 6a is composed of an expansion / contraction socket main body 13 that is integrally connected to the connecting portion 5a, and the expansion / contraction socket main body 13 includes a convex joint connection portion and a water meter connection portion 16a. The water meter connection portion 16 a includes a sleeve 7 inserted into one end of the telescopic socket body 13 via a ring packing 24, and a screw handle 12 that drives the sleeve 7.

One end of the sleeve 7 is inserted into one end of the telescopic socket body 13, and the other end is inserted into the cylindrical portion of the water meter guide (second water meter guide) 8. There is a gap between the other end of the sleeve 7 and the cylindrical portion of the water meter guide 8, and the spring 3 a is inserted into the gap, and then the water meter position correction ring (second amount) follows the spring. (Water position correction ring) 2a is inserted.
The water meter position correcting ring has a shape having a plurality of chipped portions on both contact surfaces (FIGS. 2 and 3), but the plurality of chipped portions of the water meter position correcting ring are formed on the side surface of the ring. Reduce the contact area, reduce frictional resistance, and smooth the movement of the ring.
As shown in FIG. 15, the shape of the water meter position correction ring of the present invention is that the shape of the chipped portion, the surface having the chipped portion is replaced by both contact surfaces or one of the side surfaces, the chipped portion. A shape obtained by dividing a part of the correction ring, a shape obtained by dividing the water meter position correction ring in half instead of the chipped part, or the like may be used.
A portion (see FIG. 15) that is partly cut and separated in the peripheral portion of the water meter position correction ring is provided in order to make it easy to attach the water meter position correction ring to the connection device of the water meter. It has the same effect as the water meter position correction ring shown in FIGS.
For example, a fixing hole is provided in the upper part of the telescopic socket body 13, and both can be fixed to the fixing hole and the through hole of the screw handle 12 through a binding band. Thereby, since a handle | steering-wheel is not operated easily, it can avoid an erroneous operation and an accident. The connecting portion 1a is provided with an elbow body 20, and the elbow body 20 has an opening for fitting the water pipe connecting portion 15 at one end and the convex joint joint at the other end.

  Moreover, the connection body part (one connection body part) 6b consists of the socket main body 14 connected integrally with the connection part 5b, and the water meter connection part 16b is provided with the cap 21 which latches one end of the socket main body 14. ing. The other end of the socket body 14 constitutes a water pipe connection portion 15. A check valve unit 18 is mounted inside the socket body 14. The check valve unit 18 is supported by the check valve seat 10, and the cap 21 fixes the check valve seat 10 to the socket body 14. A water meter guide (first water meter guide) 9 is attached to the check valve seat 10 so as to protrude outside the socket body 14. The water meter guide 9 has a cylindrical portion connected to the guide portion, and the cylindrical portion of the check valve seat 10 is inserted into the cylindrical portion. There is a gap between the cylindrical part of the meter guide 9 and the cylindrical part of the check valve seat 10, and the spring 3b is inserted in the gap, and then the meter 3 position correction is made following the spring 3b. A ring (first metering device position correction ring) 2b is inserted. As a result, for example, when a large pressure drop occurs due to rupture of the water pipe on the primary side (main pipe) of the water pipe, the secondary side (indoor piping) prevents the tap water from flowing back to the primary side, When taking out the water meter, the tap water on the secondary side is prevented from flowing out from here. A plug 33 may be attached to the socket body 14.

The pair of connecting portions 5a and 5b have fitting holes facing each other, and the connecting pipe 4 is fitted into each of them. The connecting pipe 4 keeps the distance between the pair of connecting body portions 6a and 6b constant.
The connecting pipe 4 is provided with a pedestal that facilitates the positioning and installation of the water meter when the water meter is installed. As shown in the drawing, the pedestal has a cylindrical portion into which the connecting pipe 4 is inserted, and the cylindrical portion slides on the connecting pipe 4 and is fixed by screwing at a predetermined position.
The connecting portions 5a and 5b constituting the pair of connecting portions 1a and 1b are respectively provided with leg portions 30a and 30b having an L-shaped cross section. The leg portions 30a and 30b are fixed to the connecting portions 5a and 5b by rivets, respectively. Of course, in the present invention, the leg portion may be integrally formed with the connecting portion. The legs 30a and 30b are attached to a building 110 shown in FIG. 13, for example. In this case, in order to adjust the installation height of the water meter, a rod-shaped support may be fixed to the floor, and the legs 30a and 30b may be attached to the tips of the support.

Next, a method for attaching a water meter to a conventional water meter connecting device and the problem thereof will be described with reference to FIGS.
The metering device connecting device shown in FIG. 4 has a metering device mounting portion projecting from the connecting body portions 6 a and 6 b on the sleeve 11 and the check valve seat 17. The water meter 100 is mounted so as to be placed on the water meter mounting portion. As a matter of course, the water meter installed here uses the same water meter having the same diameter as the connecting device of the water meter.
However, even in the case of water meters with the same diameter as the water meter, the outer diameter of the connecting part is usually due to the normal water meter that is normally distributed and the specifications of large cities and special applications. Special water meters that are slightly smaller than the mold are also available on the market.
When the water meter 100 having an outer diameter slightly smaller than that of the normal water meter is mounted on both the sleeve 11 and the check valve seat 17 as shown in FIG. The center line X2 of the vessel 100 is slightly different from the center line X1 of the sleeve 11 and the check valve seat 17 (X1-X2). In this state, as shown in FIG. 6, even if the water meter 100 is attached and fixed, the center line difference (X1-X2) remains, and the packing portion on the connection surface between the water meter connecting device and the water meter Deficiencies such as water leakage.

However, the use of the water meter position correction ring in the water meter connection device of the present invention significantly reduces problems such as water leakage caused by the prior art.
The components of the water meter position correction ring and the accompanying water meter connection device are shown in FIGS. FIG. 2 shows a water meter position correction ring (second water meter position correction ring) 2a, a water meter guide (second water meter guide) 8, a spring 3a, a ring packing 24, and a sleeve 7. 3 shows a water meter position correction ring (first water meter position correction ring) 2b, a water meter guide (first water meter guide) 9, a spring 3b, a cap 21, a ring packing 24, and a check valve. A sheet 10 is described.

An apparatus for connecting a water meter that can be applied to both a normal water meter and a special water meter using such a water meter position correction ring will be described. FIGS. 7 to 9 are examples using a normal type watering device, and FIGS. 10 to 12 are examples using a special type watering device.
First, as shown in FIG. 7, when attaching a normal type water meter, one end of the sleeve 7 is inserted into one end of the telescopic socket body 13, and the other end is a water meter guide (second water meter guide). 8 is inserted into the cylindrical portion. There is a gap between the other end of the sleeve 7 and the cylindrical portion of the water meter 8, and a spring 3a is inserted into the gap, and a water meter position correcting ring (second water meter) is inserted after the spring 3a. Position correction ring 2a is inserted. Since the water meter 100 is a normal water meter, the outer diameters at both ends thereof are substantially the same as the outer diameters of the water meter position correction rings 2a and 2b. Therefore, the contact surfaces of the water meter position correction rings 2a and 2b are in contact with both ends of the water meter 100.

  One end of the water meter 100 is placed on the water meter mounting portion of the water meter guide 9 attached to the check valve seat 10 fixed to the inside of the socket body 14 by the cap 19, and the ring packing 24 is attached. And is in contact with the check valve seat 11. The other end of the water meter 100 is held by a water meter mounting portion of a water meter guide 8 provided at one end of a sleeve 7 configured to be slidable on the telescopic socket body 13 using a screw handle 12. . The sleeve 7 is in contact with the telescopic socket body 13 via a ring packing 24. The method of attaching the water meter 100 is to place the water meter 100 on the water meter mounting portion of the water meter guides 8 and 9 (FIG. 8), and then rotate the screw handle 12 to fix the water meter 100. (FIG. 9). The water meter 100 at this time coincides with the center line X0 of the sleeve 7 and the check valve seat 10. In such a configuration, the connection surface between the metering device connecting device and the metering device is kept airtight by the packing 24, so that there is no deficiency such as water leakage.

  Next, as shown in FIG. 10, when installing a special type water meter, since the water meter 100 is a special type, the outer diameters at both ends thereof are the inner diameters of the contact surfaces of the water meter position correction rings 2a and 2b. Slightly smaller. Accordingly, both ends of the water meter 100 partially enter the water meter position correction rings 2a and 2b and overlap each other. The method for attaching the meter 100 is to place the meter 100 in the meter position correction rings 2a, 2b of the meter guides 8, 9 (FIG. 11), and then rotate the screw handle 12 to measure the meter water. The container 100 is fixed (FIG. 12). The water meter 100 at this time coincides with the center line X0 of the sleeve 7 and the check valve seat 10. In such a configuration, the connection surface between the metering device connecting device and the metering device is kept airtight by the packing 24, so that there is no deficiency such as water leakage.

  FIG. 13 shows a case where a water meter is connected to the device for connecting water meters shown in FIG. 1 and is actually installed in a pipe. A water meter 100 is connected to one end of the pair of connecting body portions 6a and 6b facing each other, and an indoor pipe is joined to the other end of the connecting body portion 6a via a pipe joint and a stop cock 26, and connected. A branch pipe 102 is joined to the other end of the body portion 6b. A water pipe 103 piped in the building 110 is branched into a branch pipe 102, and a water meter 100 is connected to the branch pipe 102. The connection device of the water meter is composed of a pair of connection portions 1a and 1b and a connection pipe 4, and the connection portions 1a and 1b are respectively connected to connection body portions 6a and 6b and connection portions 5a and 5b connected to these connection body portions. Become. The connection pipe 4 connects these connection parts 5a and 5b.

Next, Example 2 will be described with reference to FIG.
FIG. 14: is a front view which shows the state which attached the water meter to the connecting device of the water meter demonstrated in this Example, and was installed in the building. A plug 33 is attached to the socket body 14 on the downstream side in the water meter connection device shown in FIG. That is, a mounting portion such as a measuring instrument is provided on the secondary side. With such a configuration, it is possible to obtain a water meter connection device that can be easily measured. In FIG. 14, a pressure gauge 35 is attached instead of the plug. The branch pipe 102 is provided with a pressure reducing valve 28 between the connecting device of the water meter and the stop cock 26, and the pressure gauge 35 is necessary for adjusting the water pressure of the indoor piping.
The spring attached to the water meter position correction ring described in the above embodiment is retracted through the water meter correction ring by both ends of the water meter when the normal water meter is mounted. The spring and water meter position correction ring in this state are in the stored state. Before installing both types of water meter and when installing special type water meter, the spring is in the extended state and maintains the position of the water meter position correction ring that serves as a guide for the special type water meter is doing.

1 is a front cross-sectional view of a connecting device for a water meter according to Embodiment 1. FIG. 1 is a front cross-sectional view of a water meter guide, a water meter position correction ring, a ring packing and a sleeve of the other connecting body portion according to FIG. 1, a front view of a spring, and AA, BB, C- Each right view of the part in alignment with C line. 1 is a front cross-sectional view of a cap, a water meter guide, a water meter position correction ring, a ring packing, and a check valve seat, a front view of a spring, and DD and E in the cross-sectional view. -E, FF, each left view of the part of a part in alignment with GG. FIG. 3 is a front cross-sectional view of a connecting device for a conventional water meter equipped with a water meter. FIG. 5 is a partial cross-sectional view of a front side of a connecting device for a water meter for explaining a malfunction when a special water meter having a substantially smaller outer diameter than that of a normal water meter is attached to the connecting device for the conventional water meter of FIG. FIG. 6 is a partial cross-sectional view of the front of the water meter connecting device for explaining a problem when the special water meter having a substantially smaller outer diameter than that of the normal water meter is attached to the conventional water meter connecting device of FIG. 1 is a front cross-sectional view of a connecting device for a water meter according to Example 1 with a normal water meter attached. FIG. 8 is a partial cross-sectional view of the front side of the connecting device of the water meter for explaining the process of attaching the normal type water device to the connecting device of the water meter of FIG. FIG. 8 is a partial cross-sectional view of the front side of the connecting device of the water meter for explaining the process of attaching the normal type water device to the connecting device of the water meter of FIG. 1 is a front cross-sectional view of a connection device for a water meter according to Example 1 with a special water meter attached. FIG. 11 is a partial cross-sectional view of the front of the measuring device connecting device for explaining a process of attaching the special type measuring device to the connecting device of the measuring device of FIG. 10. FIG. 11 is a partial cross-sectional view of the front of the measuring device connecting device for explaining a process of attaching the special type measuring device to the connecting device of the measuring device of FIG. 10. The front view which shows the state which attached the water meter to the connecting device of the water meter demonstrated in Example 1, and installed in the building. The front view which shows the state in the case of attaching a water meter to the connection device of the water meter demonstrated in Example 2, installing in a building, and performing a pressure adjustment. The perspective view of the other water amount apparatus position correction ring used for an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b ... Connection part 2a, 2b ... Metering device position correction ring 3a, 3b ... Spring 4 ... Connection pipe 5a, 5b ... Connection part 6a, 6b ... Connection body part 7 ... Sleeve 8, 9 ... Water meter guide 10 ... Check valve seat 12 ... Screw handle 13 ... Telescopic socket body 14 ... Socket body 15 ... Water pipe connection part 16a, 16b ... Water meter connection 18 ... Check valve unit 20 ... Elbow body 21 ... Cap 24 ... Ring packing 26 ... Stop cock 28 ... Pressure reducing valve 30a 30b ... Leg 33 ... Plug 35 ... Pressure gauge 100 ... Metered water device 102 ... Branch pipe 103 ... Water pipe 110 ... Building X0 ... Metered water device And the center line of the connection device of the water meter X1 ... of the water meter Center line of connecting device X2 ... Center line of water meter

Claims (2)

A connecting pipe, and a pair of connecting portions provided on both sides of the connecting pipe, the pair of connecting portions each including a connecting portion to which the connecting pipe is attached and a connecting body portion, The connecting body part of the pair of connecting parts has one connecting body part having a water pipe connecting part and a water meter connecting part at both ends, and the other connecting body part having a convex joint connecting part and a water meter at both ends. A connecting portion, wherein the water meter connecting portion of the one connecting body portion holds one end of the water meter and has a cylindrical portion, and the one water connecting body guide of the one connecting body. A cylindrical check valve seat for supporting a check valve disposed between the water pipe connecting portion and the water meter connecting portion; and the cylindrical portion of the first water meter guide and the reverse A first metering device position correction ring for holding the central axis of the metering device in an appropriate position is interposed between the stop valve seat and the other connector. The water meter connecting portion has a sleeve for holding the other end of the water meter and a screw handle for driving the sleeve, and the sleeve holds the other end of the water meter and has a cylindrical portion. The sleeve has a sleeve end inserted into a cylindrical portion of the second water meter guide, and the sleeve and one end of the sleeve. A second water meter position correction ring that holds the central axis of the water meter in an appropriate position, and the connection pipe keeps a constant distance between the pair of connection parts, The convex joint connecting part of the other connecting body part has a water pipe connecting part at one end, an opening at the other end, and a cylindrical shape in which the convex joint connecting part is fitted into the opening at the other end. The elbow main body, the convex joint connection part at one end and the other member connection part at the other end, the convex joint connection Water meter connection device one end fitting portion, which comprises using a pipe joint comprising a cylindrical connector to be fitted to the elbow body opening of. The connecting device for a metered water device according to claim 1, wherein a mounting portion such as a measuring instrument is provided on the secondary side.

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