JP2007277989A - Method of replacing meter for water service and joint for adjusting meter for water service - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of replacing a meter in which an external force is not applied to an existing pipe under a set environment since the existing pipe is deteriorated and may be cracked when it receives an external force though the position of the existing pipe must be corrected to position the joining ends at both sides of a new meter with the joining end of the existing pipe to replace the meter for water service in the existing pipe. <P>SOLUTION: The displacements of the positions of the primary and secondary joining ends 2a, 2b of the existing pipe produced when an existing meter in the existing pipe is removed are fixed unchanged. A joint pipe capable of coping with the position of each joining end of the existing pipe is joined to the joining end of the new meter. The joining end of the new meter is joined to the joining end of the existing pipe by an end joining mechanism. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is set in an existing pipe such as a pipe shaft of an apartment house, and the end of an existing pipe without changing the state of the existing pipe and the method of replacing the existing water pipe that must be replaced while leaving the existing pipe as it is. It is related with the adjustment coupling for coupling a part and a meter junction end.

  Although the meter for water is obliged to be replaced every predetermined period by the Measurement Law, the service life of the system piping in which the meter is set does not always match the replacement period of the meter. Often, only the meter needs to be replaced.

  However, recently, apartment buildings have been aged, and exposed portions of steel pipes piped in the pipe shaft corrode over time. When external force is applied, there is a greater risk of cracks entering the corroded portions and causing water leakage. It is coming. Therefore, it has become necessary to replace the meter without applying an external force as much as possible to the existing piping in the setting environment.

  Recently, regarding the replacement of a water meter, for example, as described in Patent Documents 1 and 2, a base body provided with an attachment / detachment device that detachably attaches meter ends to both sides of the primary side and the secondary side. Replacing only the meter is easy due to the installation, but the meter in the existing piping that is integrated with an old apartment house that was set before that, or the meter in the existing piping that does not use the meter detachable base body As for, the attachment and detachment to the support pipes must be carried out by means of a mating type with a cap nut or the like.

As for replacement of water supply equipment set in existing piping that cannot be replaced with the meter in this way, for example, as described in Patent Document 3 for a water faucet, a predetermined treatment is performed on an old equipment and a new one is installed next to it. An extremely complicated means is used to set up the equipment and bury it as it is, or take measures to stop the water, remove the old equipment, and connect the new equipment to the support pipe using a special adapter device.
Japanese Patent Laid-Open No. 05-209424 JP 09-280919 A Japanese Patent Laid-Open No. 2003-254489

  However, meter bearing pipes in pipe shafts that have been aged are subject to cracks from corroded parts due to external forces as described above, and there is a risk of water leakage, especially when the old meter is removed. In most cases, a restoring force acts on both the primary and secondary bearing pipes to cause misalignment.

  However, in the past cases, it is extremely likely that the corrosion part of the pipe will crack if an external force that corrects the misalignment is applied to the fitting end of the new meter to match the fitting end of the new meter. It has been found that there is a problem that such correction force cannot be applied to the bearing piping.

  In addition, since the meter replacement work involves water interruption, there is a problem that the work must be completed in as short a time as possible to reduce the burden on residents.

  The present invention addresses the above-described problems, and at the stage where the old meter set in the existing pipe is removed, the displacement of the position of the joining end of the primary side existing pipe and the secondary side existing pipe caused by the removal is left as it is. The new meter joint end is connected to the new meter joint end by joining the joint pipe that can correspond to the position of each joint end of each existing pipe to the new meter joint end. It was configured to replace the old and new meters by joining with the joint end of the pipe.

  Further, as a means for fixing the displacement of the joint end of the primary side existing pipe and the secondary side existing pipe due to the removal of the old meter as it is, the end of the existing pipe and the meter joint end are supported 1 The secondary side and secondary side joints are coupled so that the joint mechanism position can be adjusted, and adjusted and fixed according to the position of the joint end of the primary side existing pipe and the secondary side existing pipe that are misaligned by removing the old meter. An adjustable joint was developed.

  Furthermore, a flexible structure that can be bent is interposed between the joint body and the fitting mechanism in the fitting mechanism on the meter joint end side of the joint so that the position of the fitting mechanism can be freely changed. Thus, the joint mechanism on the meter joint end side is made into a joint mechanism with a one-touch mounting structure so that joint work can be performed with one touch.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows the setting state of the old water meter M1 before replacement, which is set in the existing pipe, and is joined between the existing pipe 1a supporting the primary side and the existing pipe 1b supporting the secondary side. The support is set by the mechanisms 2a and 2b.

  V1 is a stop cock set in the existing piping. When the meter replacement work according to the present invention is performed, first, the stop cock V1 is closed to stop the water flow from the water supply main, and the joining mechanism 2a. 2b is released from the old water meter M1 and the old water meter M1 is removed.

  By removing the old meter M1, the existing pipes 1a and 1b supporting the old meter M1 are released from the position restriction due to the fastening support and restored to the natural position by the position restriction other than the meter fastening support by the restoring force. A so-called misalignment occurs in which the positions of the shaft cores do not coincide between the joining mechanisms 2a and 2b, which are joining ends of the pipes, and the new meter M2 cannot be fitted as it is.

  On the other hand, this misalignment state is a natural position for the existing pipes 1a and 1b that does not receive an unnatural pressure, and the existing pipe is weakened by aging to maintain the position without applying a correction force. This is a major factor in maintaining the service life of system piping. In the present invention, the adjustment joint 3 to be described below maintains and fixes the state of misalignment of the existing pipe as it is, and joins the joint ends Ma and Mb of the new meter M2 and the joint ends of the existing pipe. The meter is exchanged.

  3 is an adjustment joint for maintaining and fixing the above-mentioned existing pipe misalignment as it is, and a primary side bearing joint for supporting the ends of the existing pipes 1a and 1b and the joint ends Ma and Mb of the new meter M2. 3a and the secondary bearing joint 3b are paired, and both joints are coupled by coupling arms 31a and 31b each having a coupling mechanism position adjusting mechanism 31 for both joints.

  Each bearing joint includes a joint part 32 with the end of the existing pipe and a joint part 33 with the joint pipes 4a and 4b joined with the joint end of the new meter M2, both joints corresponding to the setting environment. Then, the position configuration is performed so that the joining pipe can be easily disposed at the joining end of the new meter M2 from the joint mechanism position adjusted by the adjusting mechanism 31 by bending at a predetermined angle. The joining pipe 4a is provided with a stop cock V2 as necessary.

  Coupling arms 31a and 31b are integrally attached to the bearing joints 3a and 3b, respectively, and the tip portions thereof are configured as a joint mechanism position adjusting mechanism 31. That is, the front ends of both arms are superposed pieces that overlap each other, and the bolt 5 is fastened with an adjustment washer 34 having a thickness corresponding to the width of the misalignment in the horizontal direction interposed in the superposed portion. Then, the axial center position of the existing pipe joint 32 is moved and adjusted to the corresponding position.

  For vertical displacement, the lower holes 51b of the upper and lower two-stage bolt holes 51a and 51b provided in the overlapping portions of the coupling arms 31a and 31b and the adjustment washer 34 have a curved elliptical shape as shown in FIG. The angle of the bearing joints 3a and 3b can be adjusted by the bolt position adjustment space in the elliptical lateral direction.

  FIG. 6 shows another embodiment of the adjustment joint corresponding to the case where the position of the joint end of the existing pipe due to misalignment becomes a more complicated position setting due to twisting or the like, and the joint of the coupling arms 31a and 31b. A support arm 35 is provided on the side base portion, and a pivot arm 36 having a coupling overlap piece with a counter joint on the tip side is rotatably fitted to the base support seat 35 so that the bearing joints 3a and 3b are provided. The position can be adjusted by rotating with respect to the adjustment mechanism 31.

  Reference numeral 37 denotes a ring body, which is fitted into a synthetic groove of a ring groove 37a formed in the inner wall of the support seat 35 and a ring groove 37b formed in the outer periphery of the rotation arm 36, and rotates with the support seat 35. The arm 36 is rotatably connected.

  FIG. 7 shows the joint body 3 and the fitting mechanism 33a so that the joint 33 with the joints 4a and 4b joined to the joints Ma and Mb of the new meter M2 of the bearing joint can be freely adjusted in position. An embodiment in which a bendable flexible structure 38 is interposed between the two is shown.

  FIG. 8 shows an embodiment in which the joint mechanism 33 on the meter joint end side is a joint mechanism 6a having a one-touch mounting structure. An annular elastic seal member 61 is provided on the inner peripheral surface of the main body insertion hole 33a, and a stop ring is provided at the rear portion of the seal member. 62 is fixed, a locking member 63 having a biting ridge is housed, and the joint pipe 4 is inserted into the joint 6 in which the cap 64 is screwed into the joint insertion hole 33a. The outer periphery of the joint is snapped and locked, and the joining pipe is fixedly joined by the stop ring 62.

  FIG. 9 is an embodiment in which the joint mechanism 33 on the meter joint end side is a joint mechanism 6b having a one-touch mounting structure, and the joint pipe 4 to be inserted and joined is a flexible resin pipe. The basic structure of the joint mechanism 6b is the joint mechanism 6a. The O-ring 65 is set on the front portion of the stop ring 62 and the cap 64.

  Furthermore, the inner core 66 is fitted to the joint pipe 4 made of a flexible resin pipe as a material when inserted into the joint mechanism 6b, and the outer circumference of the inner core 66 and the insertion joint pipe 4 is snapped to lock the resin pipe 4 The resin pipe is fixedly joined by the stop ring 62.

  Since the present invention is configured as described above, it is possible to replace the meter while maintaining and fixing the misalignment state of the existing piping, maintaining the service life of the system piping by the existing piping, and by pressurizing the piping system The failure was avoided.

The Example of the water meter exchange construction method by this invention is shown, It is a whole piping structure figure which shows the state which removed the old meter, fixed the position of the center alignment of existing piping, and attached the new meter. Similarly, it is a piping structure figure which shows the setting state of the old meter in the existing piping before replacement construction. The Example of the adjustment coupling which fixes the position of the misalignment of the existing piping as it is according to the present invention is shown, and is a plan view of the joint and a front view of the entire structure with a cross section of the main part showing the structure corresponding thereto. In all of the following drawings, the cross section is not along the linear base axis, and the coupling arm is an external view with the base axis shifted from the cross section base axis. Similarly, it is a top view which shows the structure of the secondary side bearing joint as a member in the Example of FIG. Similarly, it is the front view which made the principal part the cross section which shows the structure of the secondary side bearing joint as a member in the Example of FIG. Similarly, it shows an embodiment of an adjustment joint in which the structure of the coupling arm is composed of a support seat and a rotating arm, and a plan view of the joint with the main part as a cross section and the main part showing the structure corresponding to this in cross section. FIG. Similarly, it shows the Example which interposed the flexible structure part which can be bent between a coupling main body and the fitting mechanism part, and is the whole structure front view which made the principal part the cross section. Similarly, it shows the Example which used the joint mechanism of the meter joint end side as the joint mechanism of the one-touch mounting structure, and is the whole structure front view which made the principal part the cross section. Similarly, the joint mechanism of the meter joint end side is a joint mechanism of a one-touch mounting structure, and shows an embodiment corresponding to the case where the joint pipe to be inserted and joined is a flexible resin pipe. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a Existing piping which supports primary side 1b Existing piping which supports secondary side 2a Joining mechanism of primary side existing piping and meter end 2b Joining mechanism of secondary side existing piping and meter end 3 Adjustment joint 3a Primary side bearing joint 3b Secondary side bearing joint 31 Joint mechanism position adjustment mechanism 31a of both joints Primary arm joint joint 31b Secondary arm joint arm 32 Joint of the joint to the end of the existing pipe Part 33 Joint part 33a between the new meter joint end of the bearing joint and the joint pipe end part joined to the joint pipe end part of the bearing joint 33b Joint part of the flexible structure of the bearing joint 34 Superposed piece of joint arm Adjusting washer 35 interposed between them. Rotating arm bearing seat of the coupling arm 36 Rotating arm of the coupling arm 37 Ring body 37a Ring groove 37b on the inner wall of the bearing seat Ring groove on the outer periphery of the rotating arm 38 Flexible structure 4 Existing distribution 4a Primary side joint pipe between existing pipe and new water meter 4b Secondary side joint pipe between existing pipe and new water meter 5 Polymerization and fastening of overlapping pieces of the coupling arm Bolt 51a Upper arm hole 51b of coupling arm overlap piece Lower bolt hole 52b of coupling arm overlap piece 52 Washer 6 One-touch fitting joint 6a One-touch fitting joint mechanism 6b One-touch fitting joint mechanism for flexible joint pipe 61 Annular elastic seal Member 62 Stop ring 63 Locking member having a biting ridge 64 Cap of joint mechanism 65 O-ring of joint mechanism 66 Inner core M1 Old water meter M2 New water meter V1 Old stop cock in existing pipe V2 Existing pipe New faucet of the junction pipe with the new water meter Ma Primary junction end of the new water meter Mb Secondary joint end

Claims (8)

  When the old meter set in the existing pipe is removed, the displacement of the joint end of the primary side existing pipe and the secondary side existing pipe resulting from the removal is fixed as it is, and the new meter joint end The new meter joint end is joined to the joint end of the existing pipe by joining a joint pipe that can correspond to the position of each joint end of each existing pipe and set to the end of the joint pipe. Water meter replacement method, characterized by meter replacement   A pair of primary and secondary joints that support the end of the existing pipe and the meter joint end, and the opposing joints are joined by a joint arm equipped with a joint mechanism position adjustment mechanism for both joints. Adjustable fitting for water meter replacement   Bolts that connect the opposing joints to each other by superimposing a joint arm at the tip of the joint joint with the arm tip of the opposing joint, and fixing the position of both joints by inserting and fastening bolts to the overlapped piece. Along with fixing the joint end position corresponding to the misalignment in the horizontal direction by adjusting the thickness of the adjustment washer by forming the hole in two upper and lower stages and polymerizing with the adjustment washer in the polymerization piece portion polymerization The adjustment joint for water meter exchange according to claim 2, wherein the adjustment joint is used.   Bolts can be inserted and fastened by changing the joint angle of both joints by changing the joint angle between the two upper and lower bolt holes that fix the position of both joints by inserting and fastening bolts, one with an ellipse and the other with a curved ellipse. The adjustment joint for water meter exchange of Claim 3 characterized by the above-mentioned   The joint mechanism position adjusting mechanism is configured such that a support arm is provided on the joint base of the coupling arm, and a pivot arm having a coupling fixing mechanism with the opposing joint on the distal end is rotatably fitted to the base bearing seat. Adjustment joint for water meter exchange according to claim 2   The adjustment joint for water meter exchange of Claim 2 which interposed the flexible structure part which can be bend | folded between the joint main body and the fitting mechanism part in the joint mechanism of the meter joint end side.   7. The adjustment joint for water meter replacement according to claim 2, wherein the joint mechanism on the meter joint end side is a joint mechanism having a one-touch mounting structure. The adjustment joint for water meter exchange according to claim 2, claim 3, claim 4, claim 5, or claim 6, wherein the joint mechanism on the meter joint end side is a joint mechanism having a one-touch mounting structure for flexible pipe joining.

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