JP2020067099A - Earthquake-proof repair valve - Google Patents

Abstract

To provide an earthquake-proof repair valve having an earthquake resistance by elastic flexibility, in which, when elastically and flexibly deformed, the valve can be maintained in a state returned to an upright state without replacing a component.SOLUTION: A flange part 21 is provided on a secondary side of a repair valve body 10, and a holding body 11 is provided on a primary side. A elastic/flexible deformation mechanism 12 is provided in the holding body 11 which allows the repair valve body 10 to be elastically and flexibly deformed. When the repair valve body 10 is deformed and inclined, the repair valve body 10 is returned to an upright state, and an inclination correcting jig 20 is installed between the flange part 21 and the holding body 11 so as to maintain the upright state.SELECTED DRAWING: Figure 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic resistant repair valve, and more particularly to a seismic repair valve having a flexible joint structure.

  Conventionally, for example, a fire hydrant and an air valve are generally connected to a standing state from a water pipe buried underground under a branch pipe. Normally, a repair valve is provided directly below these fire hydrants and air valves, and this repair valve on the primary side shuts off the water pressure applied to the fire hydrants and air valves from the water pipe, thereby maintaining the fire hydrants and air valves on the secondary side. And can be replaced. When the fire hydrant and the air valve are buried underground as described above, if an earthquake occurs and the ground changes, the fire hydrant and the air valve may be damaged due to displacement of the water pipe. As a countermeasure against this, there is known one in which a fire hydrant or an air valve is connected to a branch pipe via an earthquake-resistant repair valve having a joint structure having expansion and contraction flexibility.

  As a repair valve of this type, for example, an earthquake-resistant repair valve of Patent Document 1 has been filed by the present applicant. This repair valve is equipped with a retaining ring and a rubber ring between them in a state where the body insertion port is inserted into the receiving member, and these retaining ring and rubber ring are integrated while being pressed through the push ring. ing. As a result, the body side can be expanded and contracted flexibly with respect to the receiving member through the insertion opening around the shake direction, and the rubber ring can ensure the sealing property and prevent water leakage.

  When a fire hydrant or an air valve is laid underground using such a joint structure, for example, it is connected in the state shown in FIGS. 6 (a) and 6 (b). In the case of FIG. 6A, a valve casing (pit) 2 is formed from the ground surface 3 so as to reach the water pipe 1 horizontally buried in the ground, and the water pipe 1 is branched into the valve casing 2. The branched portion 4 is arranged. A repair valve 5 having expansion and contraction flexibility is connected to the upper portion of the branch portion 4 in an upright state with a gap provided between the repair valve 5 and the wall surface 2a of the valve casing 2. An air valve 6 is connected to the upper portion of the repair valve 5, and the air valve 6 allows the air in the water pipe 1 to escape to the outside.

Further, in FIG. 6B, a fire hydrant 7 is connected to the position of the air valve in FIG. 6A, and water is supplied to the outside through the fire hydrant 7. In this case, as in the case of FIG. 6A, the repair valve 5 is connected to the upper portion of the branch portion 4 of the water pipe 1 in an upright state, and the fire hydrant 7 is connected to the upper portion of the repair valve 5.
When an earthquake occurs, as shown in FIGS. 6 (a) and 6 (b), the body 5a side of each repair valve 5 expands and contracts in the swinging direction and the connecting direction with respect to the water pipe 1 side, so that an external force is applied. The air valve 6, the fire hydrant 7, and the branch portion 4 are prevented from being damaged.

  On the other hand, Patent Document 2 relates to a seismic resistant joint of a branch pipe, and is provided to connect a branch pipe branched from a main pipe and a connection pipe to which a terminal device is connected. In this joint, an annular seal member is attached to the inner circumference of the branch pipe, and a tubular shape formed by an elastic body in a space formed between the fixed side flange part of the branch pipe and the movable side flange part of the connection pipe. The fixed side flange portion and the movable side flange portion are connected by a connecting bolt with the spacer interposed. As a result, when the end equipment side shakes and a bending moment acts on the branch pipe and the connecting pipe in the event of an earthquake, the spacer relaxes the force in this deflection direction and prevents damage to the connecting bolts, while at the same time using a seal member. Trying to prevent damage and water leakage.

JP, 2017-172799, A Japanese Patent No. 6341722

In the former patent document 1, when the repair valve 5 is laid in the state of FIG. 6 (a) and FIG. 6 (b), the fire hydrant 7 and the air valve 6 are caused by the relative displacement of the ground and the pipeline when an earthquake occurs. May collide with the valve casing 2 and the repair valve 5 may expand and contract and tilt. In this case, when the repair valve 5 is not leaked or damaged, only the valve casing 2 part can be replaced during the restoration work, and the repair valve 5 can be reused as it is.
However, when the repair valve 5 is flexed by applying an excessive force, it becomes difficult to maintain this state when the tilted state is returned to the upright state. Therefore, as shown in FIG. 7 (a), the repair valve 5 may be tilted and the horizontal mounting state of the air valve 6 may not be maintained, and the function of the air valve 6 may not be sufficiently exerted to cause water leakage. Possibility also arises. Further, as shown in FIG. 7 (b), when the repair valve 5 is inclined, when the opener 8 for opening / closing operation is attached to the repair valve 5, the opener 8 interferes with the valve casing 2. The operation may become difficult, or the opening / closing operation may not be possible because the opening device 8 cannot be attached.
Even if an attempt is made to replace a damaged internal part of the repair valve 5 to maintain the upright state, the repair valve 5 is connected to the branch portion 4 in a buried state, which makes it difficult to perform the work. Even when the parts 5 are removed from the branch part 4 and the parts are replaced, the work of cutting off the water is required.

  On the other hand, the latter seismic resistant joint of Patent Document 2 is for relieving the force in the deflection direction by a cylindrical spacer when an earthquake occurs. For example, when a repair valve is provided on the terminal side of this seismic resistant joint, It is not for returning to the upright state from the later flexible state and holding the upright state again. Further, since the spacer is integrally incorporated between the branch pipe and the connection pipe as a joining component and the sealability of the seal member is ensured through the flexibility of this spacer, when the spacer is damaged, this spacer is It needs to be replaced to restore flexibility. When exchanging the spacer, it is necessary to loosen the connecting bolt and remove the connecting pipe from the branch pipe, so that there is also a problem that replacement work becomes difficult.

  The present invention was developed in order to solve the above-mentioned problems, and its purpose is to provide a seismic repair valve that exhibits seismic resistance due to expansion and contraction flexibility. (EN) Provided is a seismic repair valve that can be held in an upright state without replacement.

  In order to achieve the above object, the invention according to claim 1 has a flange portion provided on the secondary side of the repair valve body, and a holding body provided on the primary side, and the repair valve is provided in the holding body. The main body is equipped with an expansion and contraction flexible mechanism that can be expanded and contracted, and when the repair valve main body is flexed and tilted, put the repair valve main body upright and install a tilt correction jig between the flange and the holder. It is a seismic repair valve that is installed to keep it upright.

  According to a second aspect of the present invention, the inclination straightening jig is provided in a substantially cylindrical shape, and is mounted in a state in which the upper and lower ends thereof are sandwiched between the flange portion and the holding body and surrounds the repair valve main body. It is a seismic retrofit valve.

  In the invention according to claim 3, a fixing flange portion is provided in the middle of the extended pipe in which the repair valve main body is extended, and the inclination straightening jig has substantially the same height as between the fixing flange portion and the holding body. Is a seismic retrofit valve installed.

  According to a fourth aspect of the present invention, one or a plurality of notch-shaped engaging portions are formed in the inclination correcting jig, and the engaging portions are attached to the repair valve main body and the holding body, and connecting bolts and connections. It is a seismic repair valve in which a straightening jig is fixed in a state of being locked to a use nut.

  The invention according to claim 5 is the seismic repair valve, wherein the inclination correcting jig is provided in a divided structure of two or more parts.

  The invention according to claim 6 is the seismic repair valve in which the tilt correcting jig is provided in an integral structure having an opening at a free end, and a notch for bending deformation is formed on a side opposite to the opening. is there.

  According to a seventh aspect of the present invention, the holding body includes an annular receiving member and an annular push ring mounted on an upper portion of the receiving member, and the expansion / contraction flexible mechanism has an insertion opening formed in the repair valve main body. It has a retaining ring and a rubber ring, and the retaining ring and the rubber ring are attached between the insertion port and the holding body when the insertion port is loosely fitted inside the holding body. It is a seismic retrofit valve that is a mechanism that has been developed.

  According to the invention of claim 1, the repair valve main body expands and contracts flexibly with respect to the holding body through the expansion and contraction flexible mechanism, so that the seismic resistance is exhibited, and damage to parts and water leakage are reliably prevented. When the repair valve body expands and contracts and tilts, the repair valve body is returned to the vertical state, and a tilt correction jig is attached between the flange portion and the holding body to hold the valve upright. It can be reused without replacing parts and can be used with the repair valve body prevented from tilting. Accordingly, when the air valve is provided on the secondary side via the flange portion, the horizontal installation state of the air valve can be maintained, the function thereof can be sufficiently exhibited, and water leakage can be prevented. On the other hand, when a fire hydrant is installed on the secondary side, the hydrant is prevented from tilting through the repair valve to prevent interference with the valve housing etc. of the tamper attached to this hydrant, and operation by the tamper It is possible to ensure water drainage and to carry out water discharge work smoothly.

  According to the invention of claim 2, by mounting the substantially cylindrical inclination correction jig in a state in which the upper and lower ends thereof are sandwiched between the flange portion and the holding body, and the repair valve main body is surrounded. , The repair valve body comes into contact with the tilt correction jig to prevent the tilt, and to maintain the upright state securely. When an earthquake occurs, the repair valve main body expands and contracts while absorbing the shock by the tilt correction jig, so that damage to internal parts can be prevented. The inclination correcting jig is attached using the connecting flange on the secondary side and the holding body for storing the expansion and contraction flexible mechanism, without newly providing an attachment target portion for attaching the inclination correcting jig. It will be possible.

  According to the invention according to claim 3, by providing the fixing flange in the middle of the extending pipe, even in the case of a long shape embedded in a deep position, the height between the fixing flange and the holding body is substantially the same. The tilt correction jig can be attached. Therefore, even when the entire height is different, one tilt correcting jig can be shared, and it is not necessary to manufacture different tilt correcting jigs for different specifications.

  According to the invention of claim 4, one or a plurality of locking portions are formed on the inclination correcting jig according to the number of connecting bolts and connecting nuts to be attached, and the inclination correcting jig is provided with the connecting bolt, Can be installed from the outside of the connection nut. Accordingly, the inclination correcting member can be attached in the connected state without attaching or detaching the connecting bolt or the connecting nut. In this case, the engaging portion can be easily attached to and detached from the connecting bolt and the connecting nut while bending the inclination correcting jig, and after the inclination correcting member is mounted, the engaging portion is elastic so that the engaging portion has the connecting bolt and the connecting nut. It keeps the locked state to prevent it from falling off.

  According to the invention of claim 5, the tilt correcting jig is divided into two or more parts so that it can be easily attached and detached from the side of the repair valve body. It is also possible to provide a jig. When the tilt correction jig is not used, it can be made compact by stacking the divided parts.

  According to the invention of claim 6, the inclination correcting jig is provided in an integrated structure having an opening at the free end, and a notch for bending deformation is formed on the opposite side of the opening, whereby the inclination correcting jig is formed. The tool has a hinge structure and can be attached / detached to / from the connecting bolt and connecting nut from the outside of the repair valve body with one touch. Since the tilt correction jig can be integrated, its management becomes easy.

  According to the invention of claim 7, the expansion / contraction flexible mechanism exerts expansion / contraction flexibility in a state where the sealability is secured, and the repair valve main body is prevented from slipping out so that the repair valve main body is in an upright state when flexed. Can be easily returned to.

It is a mimetic diagram showing an embodiment of an earthquake-resistant repair valve of the present invention. (A) is a front view of a seismic repair valve. (B) is a plan view of the seismic repair valve. (A) is a side view of a seismic repair valve. 1B is a vertical cross-sectional view of FIG. (A) is a perspective view of the tilt straightening jig. (B) is a front view of a tilt correction jig. (C) is a plan view of (a). FIG. 6A is a plan view showing another example of the inclination straightening jig. (B) is an enlarged cross-sectional view of an A portion of (a). (A) is a front view showing another example of a seismic repair valve. (B) is a central longitudinal sectional view of (a). (A) is a schematic diagram which shows the state in which the air valve was connected to the seismic repair valve. (B) is a schematic diagram showing a state in which a fire hydrant is connected to the seismic repair valve. (A) is a schematic diagram which shows the flexible state of the air valve connected to the seismic repair valve. (B) is a schematic diagram which shows the flexible state of the fire hydrant connected to the seismic repair valve.

  Embodiments of the seismic repair valve according to the present invention will be described below in detail with reference to the drawings. 1 and 2 show an embodiment of the seismic repair valve of the present invention.

The seismic repair valve of the present invention has a repair valve main body 10 having a flange portion 21 on the secondary side and a holding body 11 on the primary side, and the holding body 11 is provided with an expansion / contraction flexible mechanism 12 for expanding and contracting. The repair valve body 10 is provided so as to be able to extend and contract with respect to the holding body 11 by the flexible mechanism 12. Further, a tilt correction jig 20 is provided between the repair valve body 10 and the holding body 11.
Then, when the repair valve body 10 is flexed and tilted, the repair valve body 10 is placed upright with respect to the holding body 11, and a tilt correction jig is provided between the flange portion 21 and the holding body 11. 20 is attached to maintain the upright state.

In FIG. 2B, the repair valve main body 10 includes a body 22 formed of a metal material, and a substantially disk-shaped flange portion 21 is formed on the secondary side of the body 22. A piping device 23 such as an air valve or a fire hydrant is provided via 21 via a connection bolt 24 such as a hexagon bolt and a connection nut 25 such as a hexagon nut.
An insertion opening 26 is formed on the primary side of the body 22 so as to extend, and a wide groove 27 having a predetermined width is formed on the outer periphery of the insertion opening 26. The repair valve main body 10 can be connected to the holding body 11 via the insertion port 26.

  A valve body 30 made of a ball is mounted in the body 22, a stem 31 is connected to the valve body 30, and an operating handle 32 is attached to the stem 31. The valve body 30 is provided so as to be able to open and close the flow passage 33 formed in the body 22 via the stem 31 by rotating the operating handle 32. A valve seat 34 is mounted on the primary side of the valve body 30 in the body 22, and a valve seat 35 is mounted on the secondary side of the valve body 30 of the body 22 via a valve seat receiver 36. Thus, in this example, the repair valve body 10 is provided in the ball valve structure.

  On the other hand, the holding body 11 is composed of an annular receiving member 40 and an annular push ring 41 mounted on the upper portion of the receiving member 40, and these are fixed by a connecting bolt 28 such as a hexagon socket head cap bolt. Through the body 11, the repair valve main body 10 is connected to the pipe flange 42 of the branch pipe, which is the external pipe on the primary side, by the embedded bolt 29 for pipe and the connection nut 25. Although not shown, the branch pipe is composed of a T-shaped pipe that is vertically branched from a water main pipe arranged in a horizontal direction and connected to the water main pipe.

  The push ring 41 is formed of a metal material into a substantially disc shape, and has an insertion opening 43 having an inner diameter into which the insertion opening 26 can be inserted in a loosely fitted state. On the lower side of the insertion hole 43, a diameter-increasing step portion 45 to which a retaining ring 44 described later can be attached is formed. On the other hand, on the upper side of the insertion port 43, a large-diameter large-diameter step portion 46 is formed, and the large-diameter step portion 46 prevents interference of the insertion opening 26 of the repair valve body 10 tilted. .

The receiving member 40 is formed of a metal material into a substantially disc shape, and an annular step portion 47 for mounting the retaining ring 44 having a diameter substantially the same as that of the enlarged diameter step portion 45 is formed on the upper surface side of the receiving member 40. Subsequent to the annular step portion 47, a small-diameter step portion 49 for storing a rubber ring 48 described later is formed. A bulging portion 50 having a reduced diameter is formed on the inner peripheral side of the bottom surface of the receiving member 40, and the bulging portion 50 secures a contact surface of a gasket (not shown) to be mounted at the time of joining with an external pipe flange 42. It
The receiving member 40 is provided with an outer diameter that can be fixed to the piping flange 42 by the connecting bolt 24 and the connecting nut 25.

  The expansion / contraction flexible mechanism 12 has the insertion opening 26 formed in the body 22, the retaining ring 44, and the rubber ring 48.

  The retaining ring 44 is formed of a metal material in an annular shape, and is provided so that its thickness can be mounted in a mounting groove 51 described later in a sandwiched state and is larger than the length of the wide groove 27. An annular projecting portion 52 is formed on the inner peripheral upper portion of the retaining ring 44 so as to project toward the inner diameter side, and the projecting portion 52 is provided with a length capable of engaging with the wide groove 27. The retaining ring 44 is provided by a divided ring, and due to this divided structure, the retaining ring 44 is provided so that it can be mounted in the mounting groove 51 in a state where the protruding portion 52 is locked in the wide groove 27.

  The rubber ring 48 is formed in an annular shape that can be accommodated in the small-diameter step portion 49 by using a rubber material having high elasticity, and is mounted between the receiving member 40 and the insertion opening 26 to ensure the sealing property between them. ing.

  The expansion / contraction flexible mechanism 12 has a retaining ring 44 and a rubber ring 48 between the insertion opening 26 and the holding body 11 in a state in which the insertion opening 26 is loosely fitted inside the holding body 11. Is installed and configured. In this case, when the receiving member 40 and the push wheel 41 are overlapped with each other, the annular step portion 47 of the receiving member 40 and the enlarged diameter step portion 45 of the push wheel 41 form the attaching groove 51 for attaching the retaining ring 44, With the rubber ring 48 housed in the small-diameter step portion 49 and the retaining ring 44 mounted in the mounting groove 51, the push ring 41 and the receiving member 40 are fixed by the connecting bolt 28 and integrated.

  When the push ring 41 is tightened, the rubber ring 48 is pressed through the retaining ring 44, and the protrusion 52 of the retaining ring 44 is locked by the wide ring 27 by the retaining ring 41 so that the body member from the receiving member 40 and the retaining ring 41 is pressed. In the state where the slip-out of 22 is prevented, the sealing property of the rubber ring 48 is exerted and the leakage is prevented. As described above, the retaining ring 44 and the rubber ring 48 are mounted in a predetermined state by one push wheel 41, so that the pressing ring 41 is made compact.

  After the combination of the receiving member 40 and the push wheel 41, an expansion / contraction flexible space S is formed between the lower portion of the protrusion 52 and the wide groove 27. The expansion / contraction flexible space S and the upper portion of the insertion opening 43 are formed. Through the large-diameter step portion 46, in the event of an earthquake, the body 22 side arranged on the secondary side expands and contracts in the swinging direction and the connecting direction with respect to the holding body 11 side arranged on the primary side to provide earthquake resistance. Demonstrate.

  Even during this expansion and contraction, the rubber ring 48 ensures the sealing performance between the insertion opening 26 and the receiving member 40, so that even if the insertion opening 26 side is largely tilted with respect to the holding body 11, the rubber ring 48 is The elastic force is exerted to ensure a tightly sealed state on the outer circumference of the insertion opening 26 and the inner circumference of the small-diameter step portion 49 of the receiving member 40, thereby reliably preventing leakage.

  A rubber cover 53 is provided between the body 22 and the push ring 41. The rubber cover 53 is formed of a rubber material having elasticity in an annular shape, and expands and contracts at engaging portions formed on the body 22 and the push ring 41, respectively. It is detachably attached when possible. The rubber cover 53 prevents water and dust from entering the telescopic flexible mechanism 12, and the rubber cover 53 causes the repair valve main body 10 to be greatly tilted or pulled out in the flow path direction due to an external force such as an earthquake. Even if it does, it is prevented from falling by following the deformation.

  The inclination correcting jig 20 shown in FIGS. 3A to 3C is formed into a substantially cylindrical shape by using a resin pipe such as a VU pipe (vinyl chloride pipe) as a material, and in this example, the divided body 20a, 20a provides a two-part structure. The height H of the tilt correcting jig 20 is substantially the same as the height from the bottom surface of the flange portion 21 to the upper surface of the push ring 41 of the holding body 11, and in this example, the height H is set to be slightly shorter. H is 67 mm, the distance from the bottom surface of the flange portion 21 to the upper surface of the push ring 41 is 70 mm, and the surface dimension of the flange portion of the seismic repair valve is 150 mm.

A plurality of notch-shaped locking portions 60 are formed in the upper and lower ends of the tilt correcting jig 20 along the circumferential direction. The upper and lower engaging portions 60 are formed with predetermined notch widths and depths at positions corresponding to the connecting bolts 24, 28 and the connecting nut 25 mounted on the flange portion 21 side of the body 22, respectively. It In the present embodiment, four locking portions 60 corresponding to the positions of the four connection nuts 25 (connection bolts 24) are formed on the upper end portion side of the tilt correction jig 20, and the lower end portion side is provided with Four locking portions 60 corresponding to the positions of the four connecting bolts 28 are formed.
In the tilt correction jig 20, a notch-shaped relief portion 62 is formed at a position corresponding to the stem housing portion (shaft mounting portion) 61 provided in the repair valve body 10.

In FIG. 1 and FIG. 2, the tilt correcting jig 20 is mounted with its upper and lower ends sandwiched between the flange portion 21 and the holding body 11 and surrounding the repair valve body 10. At this time, each divided body 20a is attached to the connecting bolts 24, 28 and the connecting nut 25 attached to the flange portion 21 and the holding body 11 with the engaging portion 60 being engaged from the outside. As a result, the inclination correcting jig 20 is fixed to the flange portion 21 and the holding body 11, and the inclination correcting jig 20 can be mounted while being elastically bent. Since the stem storage portion 61 is accommodated in the escape portion 62, the inclination straightening jig 20 can be attached to the outer periphery of the repair valve body 10 while avoiding the stem storage portion 61.
Although not shown, after the inclination correcting jig 20 is attached, a rubber band may be wound around the outer periphery of the inclination correcting jig 20 or tied with a string. Can be installed.

  FIG. 4A shows another example of the inclination correcting jig. The inclination correcting jig 70 is provided in an integrated structure having a free end opening 71 so as to cut a part of a cylindrical portion. As shown in FIG. 4B, a notch 72 is formed on the outer peripheral surface on the opposite side of the opening 71 at an angle of approximately 90 °, and the inclination correcting jig 70 is bent near the notch 72. It can be transformed. As a result, the tilt correcting jig 70 is provided in a so-called hinge structure, and can be mounted on the flange portion 21 and the holding body 11 by elastically deforming the notch portion 72 while opening the opening portion 71. .

  5 (a) and 5 (b) show another example of the seismic repair valve. In this seismic repair valve, an extension pipe 81 extending in the flow path direction is provided in the repair valve body 80, and a fixing flange portion 82 is provided in the middle of the extension pipe 81. The distance between the bottom surface of the fixing flange portion 82 and the upper surface of the push ring 41 of the holding body 11 is approximately equal to the distance (70 mm) between the bottom surface of the flange portion 21 of the repair valve body 10 and the upper surface of the push ring 41. The extension pipe 81 is integrally or separately provided at a predetermined position so as to be the same. As a result, the inclination correcting jig 20 having the same height H as that of the inclination correcting jig 20 can be attached between the fixing flange portion 82 and the holding body 11. In the seismic repair valve of this example, the face-to-face dimension of the flange portion is set to 300 mm.

  The seismic repair valve of the present invention can be connected to various branch pipes other than the T-shaped pipe, and can also be connected to pipes such as vertical pipes other than the branch pipe. In the present embodiment, the repair valve body has a ball valve structure, but it can be provided in various valve structures other than the ball valve.

The inclination correcting jig can be formed by using a resin material other than the VU pipe, or by using another material. When the tilt correcting jig has a divided structure, it may be provided in a divided structure of two or more.
Only one locking part may be formed for the tilt correction jig. The number, width and depth of the locking parts are the same as the number of connecting bolts and connecting nuts, the nominal diameter and the length. The shape of the notch of the escape portion can be arbitrarily set according to the size of the stem housing portion and the like.

Next, the operation of the above-described embodiment of the seismic repair valve of the present invention will be described.
In FIGS. 1 and 2, the body 22 of the repair valve body 10 is connected to the holding body 11 through the expansion and contraction flexible mechanism 12, and the body 22 is prevented from coming off by the retaining ring 44. Since the sealing valve and the expansion and contraction flexibility are ensured, the repair valve main body 10 can expand and contract in the flow path direction and the deflection direction with respect to the holding body 11 when an external force is applied due to an earthquake or the like. Become. As a result, the repair valve is buried underground, and even if a shock is applied to the valve casing due to an earthquake, the expansion and contraction flexible mechanism 12 provides seismic resistance to prevent damage to parts and leakage of water. it can.

When the repair valve main body 10 is flexed and tilted, the body 22 side is upright with respect to the holding body 11 side, that is, the entire repair valve is upright, and between the flange portion 21 and the holding body 11. The upright state can be maintained by mounting the tilt correcting jig 20 while sandwiching the upper and lower ends of the tilt correcting jig 20 while surrounding the repair valve body 10. As a result, after the inclination correcting jig 20 is mounted, the bottom surface of the flange portion 21 contacts the upper end thereof and the upper surface of the pressing wheel 41 contacts the lower end thereof in a circumferential shape, and the flange portion 21 and the pressing wheel 41 are regulated to be substantially horizontal. Thus, the upright state of the repair valve can be maintained while preventing the runout. Therefore, the flexible repair valve can be used continuously after being restored.
Moreover, since the tilt correcting jig 20 can be mounted by using the flange portion 21 and the holding body 11, the tilt correcting jig 20 can be placed in a predetermined state while the position is regulated without providing a separate mounting portion on the repair valve. Can be installed.

  When an earthquake or the like occurs while the tilt correcting jig 20 is installed, the tilt correcting jig 20 appropriately restricts the expansion and contraction flexible motion of the repair valve body 10 with respect to the holding body 11, and the tilt correcting jig 20 has the function. It is possible to expand and contract while absorbing the impact due to elasticity. As a result, it is possible to prevent the repair valve main body 10 from rapidly expanding and contracting and prevent damage to the parts. In this case, when the inclination correcting jig 20 is damaged due to the inclination of the repair valve body 10 with respect to the holding body 11 due to an earthquake, the inclination correcting jig 20 is removed, and another inclination correcting jig is removed while the repair valve body 10 is upright again. 20 can be mounted as before.

  Since the tilt correction jig 20 is provided by the VU pipe, the notch-shaped engaging portion 60 and the relief portion 62 can be easily processed by using a general-purpose pipe, and the manufacture is facilitated. The strength can be secured while reducing the weight, and the upright state of the repair valve can be maintained for a long period of time.

  In the case of mounting the two-divided structure straightening jig 20 of FIG. 3, the inside of the escape portion 62 is shown in FIGS. 1 and 2 while the repair valve body 10 is manually held upright with respect to the holding body 11. The stem accommodating portion 61 is allowed to escape, and the repair valve body 10 is attached so as to be sandwiched from the side surface. At this time, while the elastic body is used to bend each divided body 20a, the engaging portion 60 can be locked by being hooked from the outside of the connecting bolt 24 and the connecting nut 25, so that the attachment work can be performed. Is easy and also easy to remove. After the mounting, the periphery of the locking portion 60 is locked to the connecting bolts 24, 28 and the connecting nut 25, so that it can be prevented from naturally falling off.

  On the other hand, as shown in FIG. 4, when mounting the tilt correcting jig 70 having an integrated structure, the tilt correcting jig 70 is bent and deformed in the direction of opening the opening 71 around the notch 72. The opening 71 can be attached to the side surface of the repair valve body 10 in an enclosed state. Also in this case, the stem accommodating portion 61 can be released into the escape portion 62 in the same manner as described above, and the locking portion 60 can be easily locked from the outside of the connection bolts 24, 28 and the connection nut 25. . After the inclination correcting jig 70 is attached, a force is applied to the original cylindrical shape via the notch portion 60, so that the inclination correcting jig 70 is prevented from naturally falling off and the attached state can be maintained.

  In any of the above inclination correcting jigs 20 and 70, since the locking portion 60 is formed by the notch, the portion sandwiched between the locking portions 60 has a thin rib shape. As a result, the jig as a whole can be easily bent, which makes it easier to attach and detach.

  As shown in FIG. 5, the repair valve main body 80 has a shape extended by an extension pipe 81, a fixing flange portion 82 is provided in the middle of the extension pipe 81, and the fixing flange portion 82 and the holding body 11 are provided. When the inclination correction jig 20 having the height H is provided so that the distance between them can be mounted, even when the repair valve main body 80 is provided in a long shape, the inclination correction jig 20 is shared and the repair valve is shared. Can be held upright. Therefore, even when the repair valve body 80 is extended and laid at a deep position, one type of the tilt correcting jig 20 or the tilt correcting jig 70 is used without separately providing a tilt correcting jig having a different aspect. It can be installed with one touch.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the description of the embodiments, and does not depart from the spirit of the invention described in the claims of the present invention. Therefore, various changes can be made.

10, 80 Repair valve main body 11 Holding body 12 Expansion / contraction flexible mechanism 20, 70 Inclination correction jig 20a Divided body 21 Flange portion 24 Connection bolt 25 Connection nut 26 Insertion port 40 Receiving member 41 Push ring 44 Lock ring 48 Rubber ring 60 Locking Part 71 Opening Part 72 Notch Part 81 Extended Pipe 82 Fixing Flange Part H Height of Tilt Correction Jig

Claims (7)

  It has a flange portion provided on the secondary side of the repair valve main body, and a holding body provided on the primary side, and in the holding body, the repair valve main body is provided with an expansion and contraction flexible mechanism capable of expanding and contracting, When the repair valve body is flexed and tilted, the repair valve body is placed in an upright state, and an inclination straightening jig is attached between the flange portion and the holding body to maintain the upright state. Seismic repair valve characterized by.   The tilt correcting jig is provided in a substantially cylindrical shape, and is mounted in a state in which the upper and lower ends thereof are sandwiched between the flange portion and the holding body and surrounds the repair valve body. Seismic repair valve described in 1.   A fixing flange portion is provided in the middle of the extension pipe extending the repair valve body, and a tilt correcting jig having a height substantially the same as that between the fixing flange portion and the holding body is attached. The seismic repair valve described in 1 or 2.   One or a plurality of notch-shaped engaging portions are formed on the inclination correcting jig, and the engaging portions are engaged with the connecting bolts and connecting nuts attached to the repair valve body and the holding body. The seismic repair valve according to any one of claims 1 to 3, wherein the inclination correcting jig is fixed in a fixed state.   The seismic repair valve according to any one of claims 1 to 4, wherein the tilt correction jig is provided in a divided structure of two or more parts.   The tilt correcting jig is provided in an integrated structure having an opening at a free end, and a notch for bending deformation is formed on the opposite side of the opening. Seismic repair valve described.   The holding body is composed of an annular receiving member and an annular push ring mounted on the upper portion of the receiving member, and the expansion and contraction flexible mechanism includes an insertion port formed on the repair valve body, a retaining ring, and a rubber. A mechanism having a ring, and the insertion ring and the rubber ring being mounted between the insertion opening and the holding body in a state where the insertion opening is loosely inserted into the inner peripheral side of the holding body. The seismic repair valve according to any one of claims 1 to 6.

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