JP7311259B2 - Tilt correction structure of seismic repair valve - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tilt correction structure for an earthquake-resistant repair valve having a joint structure with flexibility.

2. Description of the Related Art Conventionally, fire hydrants and air valves, for example, are generally connected in an upright state via branch pipes from underground water pipes. Normally, a repair valve is installed directly under these fire hydrants and air valves. By shutting off the water pressure applied to the fire hydrants and air valves from the water pipes by this repair valve on the primary side, maintenance of the fire hydrants and air valves on the secondary side is possible. or exchangeable. When the fire hydrants and air valves are buried underground in this way, if an earthquake occurs and the ground changes, there is a risk of damage to the fire hydrants and air valves due to misalignment of water pipes and the like. As a countermeasure, it is known to connect a fire hydrant or an air valve to a branch pipe via an earthquake-resistant repair valve having a joint structure having flexibility.

As a repair valve of this type, for example, an application for a seismic repair valve disclosed in Patent Document 1 has been filed by the present applicant. In this repair valve, a retainer ring and a rubber ring are mounted between the insertion port of the body and the receptacle member. ing. As a result, the body side can be expanded and flexed about the vibration direction with respect to the receptacle member through the insertion port, and the rubber ring can ensure sealing performance and prevent water leakage.

When laying a fire hydrant or an air valve underground using such a joint structure, it is connected in the state shown in FIGS. 6(a) and 6(b), for example. In the case of FIG. 6(a), a valve housing (pit) 2 is formed from the ground surface 3 so as to reach a water pipe 1 buried horizontally in the ground. A branch 4 is arranged. A repair valve 5 having elasticity and elasticity 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 housing 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.

6(b), a fire hydrant 7 is connected to the position of the air valve shown in FIG. 6(a), and water is supplied to the outside through this fire hydrant 7. 6(a), 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. As shown in FIG.
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 with respect to the water pipe 1 side in the vibration direction and connection direction, thereby absorbing external force. The air valve 6, the fire hydrant 7, and the branching portion 4 are prevented from being damaged.

On the other hand, Patent Document 2 relates to an earthquake-resistant joint for branch pipes, which is provided to connect a branch pipe branched from a main pipe and a connecting pipe to which a terminal device is connected. This joint has an annular seal member attached to the inner periphery of the branch pipe, and is a cylindrical member formed of an elastic material in the space formed between the fixed-side flange portion of the branch pipe and the movable-side flange portion of the connecting pipe. The fixed-side flange portion and the movable-side flange portion are connected by connecting bolts with spacers interposed therebetween. As a result, when the terminal equipment side shakes in the event of an earthquake, etc., and a bending moment acts on the branch pipe and the connecting pipe, the spacer mitigates the force in this swinging direction, preventing damage to the connecting bolts while the seal member prevents joint damage. to prevent damage and leakage of water.

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 FIGS. 6A and 6B, the fire hydrant 7 and the air valve 6 collides with the valve housing 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 housing 2 is replaced during restoration work, and the repair valve 5 can be reused as it is.
However, if the repair valve 5 is bent by an excessive force, it becomes difficult to maintain this state when returning from the tilted state to the upright state. Therefore, as shown in FIG. 7A, there is a risk that the repair valve 5 will be tilted and the air valve 6 will not be able to maintain its horizontal mounting state. There are also possibilities. Further, as shown in FIG. 7(b), when the repair valve 5 is inclined, the opener 8 for opening and closing operation is attached to the repair valve 5, and the opener 8 interferes with the valve housing 2. In some cases, the operation becomes difficult, or the opening/closing operation becomes impossible because the opener 8 cannot be attached.
Even if an attempt is made to replace the damaged internal parts of the repair valve 5 to maintain the upright state, the work is difficult because the repair valve 5 is connected to the branch portion 4 in an embedded state. When replacing the parts by removing 5 from the branching part 4, it is necessary to cut off the water supply.

On the other hand, the latter earthquake-resistant joint of Patent Document 2 uses a cylindrical spacer to reduce the force in the vibration direction when an earthquake occurs. It is not intended to return to an upright position from a later flexed position and hold it in an upright position again. Furthermore, since the spacer is integrally incorporated as a joining part between the branch pipe and the connecting pipe, and the flexibility of the spacer secures the sealing performance of the sealing member, the spacer can be replaced when the spacer is damaged. It needs to be replaced to restore flexibility. When replacing the spacer, it is necessary to remove the connection pipe from the branch pipe by loosening the connecting bolt, so there is also the problem that the replacement work becomes difficult.

The present invention was developed in order to solve the above problems, and the purpose thereof is to provide an earthquake-resistant repair valve that exerts earthquake resistance due to expansion and contraction flexibility. To provide an inclination correcting structure of an earthquake-resistant repair valve capable of being held in a state of being returned to an upright state without replacing a valve.

In order to achieve the above object, the invention according to claim 1 forms a flange portion on the secondary side of the body of the repair valve main body, and an insertion port on the primary side of the body, respectively, and the insertion port is an annular press ring and an annular pressure ring. It is inserted loosely into the inner circumference of the retainer consisting of the receptacle member, and has a built-in expansion and contraction mechanism with a retaining ring and a rubber ring between the insertion port and the retainer, and the repair valve body is possible. When the repair valve body is bent and tilted, the repair valve body is placed in an upright state, and between the fixing flange provided in the middle of the long extension pipe extending the flange or the insertion port and the holder A tilt correction jig is attached, and this tilt correction jig is attached so as to surround the repair valve main body while being sandwiched between the flange portion or the fixing flange portion and the holder. It is a tilt correction structure .

In the invention according to claim 2, the gap distance between the fixing flange portion and the holding body is substantially the same as the gap distance between the flange portion and the holding body, and the height of the tilt correction jig is substantially the same. A tilt correction structure for an earthquake-resistant repair valve in which a tilt correction jig for an extension pipe can be mounted between a fixing flange portion and a holder.

In the invention according to claim 3, 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 the connecting bolts and connecting bolts are connected. This is a tilt correction structure for an earthquake-resistant repair valve in which a tilt correction jig is attached while being locked by a nut.

According to a fourth aspect of the invention, the tilt correction jig is a tilt correction structure for an earthquake-resistant repair valve provided in a two-part or more divided structure.

The invention according to claim 5 is a seismic repair valve in which the tilt correction jig is provided in an integral structure having an opening at the free end, and a notch for bending deformation is formed on the opposite side of the opening. It is a tilt correction structure .

According to the first aspect of the invention, the repair valve main body expands and contracts with respect to the holder through the expansion and contraction mechanism, thereby exhibiting earthquake resistance and reliably preventing damage to parts and water leakage. When the repair valve body tilts due to expansion and contraction, the entire repair valve body is returned to a vertical state, and an elongated extension is provided between the flange and the holding body or by extending the insertion port. By attaching a tilt correction jig between the fixing flange provided in the middle of the pipe and the holder to hold it in an upright position, it can be reused without replacing the parts, preventing the repair valve body from tilting. available in the state. As a result, when an air valve is provided on the secondary side through the flange portion, the horizontal mounting state of the air valve can be maintained to fully exhibit its function, and water leakage can be prevented. On the other hand, when a fire hydrant is installed on the secondary side, the inclination of the fire hydrant is prevented via a repair valve, preventing interference with the valve housing, etc. of the opener attached to this fire hydrant. The water discharge work can be performed smoothly while securing the performance.

Moreover, by mounting the tilt correction jig with its upper and lower ends sandwiched between the flange portion and the holder and surrounding the repair valve main body, the repair valve main body comes into contact with the tilt correction jig. to prevent it from tilting and to reliably maintain its upright position. In the event of an earthquake, the repair valve main body expands and contracts while absorbing the impact by the tilt correction jig, thereby preventing damage to internal parts. The tilt correction jig is mounted using the secondary side connecting flange and the holding body for housing the telescopic flexible mechanism without newly providing a mounting portion for mounting the tilt correction jig. It becomes possible.

According to the second aspect of the invention, the gap distance between the fixing flange portion and the holding body is substantially the same as the gap distance between the flange portion and the holding body, and the tilt correction jig and the height are substantially the same. Since the same inclination correction jig for the extension pipe can be mounted between the fixing flange portion and the holding body, even in the case of a long pipe buried in a deep position, the fixing flange and the holding body can be easily aligned. A tilt correction jig can be installed at approximately the same height as the space. Therefore, even when the overall height is different, one tilt correction jig can be shared, and there is no need to manufacture different tilt correction jigs for different specifications.

According to the third aspect of the invention, one or a plurality of locking portions are formed on the tilt correction jig according to the number of connecting bolts and connecting nuts to be attached, and the tilt correcting jig is provided with the connecting bolt and the connecting nut. It can be installed from the outside of the connecting nut. As a result, the tilt correcting member can be attached in the connected state without attaching and detaching the connecting bolt and connecting nut. In this case, the locking portion can be easily attached to and detached from the connection bolt and the connection nut while bending the tilt correction jig. To surely prevent falling off by maintaining a state of being locked to.

According to the fourth aspect of the invention, the tilt correction jig has a two-part or more divided structure, so that it can be easily attached and detached from the side of the repair valve main body, and the tilt can be corrected by an arbitrary number of divisions according to the mode. It is also possible to provide a jig. When the tilt correction jig is not in use, the divided parts can be stacked to make it more compact.

According to the fifth aspect of the invention, the tilt correction jig is provided in an integrated structure having an opening at the free end, and the notch portion for bending deformation is formed on the opposite side of the opening. With the hinge structure of the tool, it can be attached and detached from the outside of the repair valve main body with one touch to the connecting bolt and connecting nut. Since the tilt correction jig can be integrated, its management becomes easy.

1 is a schematic diagram showing an embodiment of a seismic repair valve of the present invention; FIG. (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 the seismic repair valve. (b) is a vertical sectional view of FIG. 1(a). (a) is an exploded perspective view of a tilt correction jig. (b) is a front view of the tilt correction jig. (c) is a plan view of (a). (a) is a plan view showing another example of the tilt correction jig. (b) is an enlarged cross-sectional view of part A of (a). (a) is a front view showing another example of the seismic repair valve. (b) is a central longitudinal sectional view of (a). (a) is a schematic diagram showing a state in which an air valve is connected to a 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 showing a flexible state of an air valve connected to a seismic repair valve. (b) is a schematic diagram showing a flexible state of a fire hydrant connected to an earthquake-resistant repair valve.

An embodiment of a seismic repair valve according to the present invention will be described in detail below 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. A repair valve main body 10 is provided to be extendable and flexibly with respect to a holding body 11 by a flexible mechanism 12 . Further, a tilt correction jig 20 is provided between the repair valve main body 10 and the holder 11 .
When the repair valve main body 10 is bent and tilted, the repair valve main body 10 is placed in an upright state 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 keep it upright.

In FIG. 2(b), the repair valve body 10 has a body 22 made of a metal material, and a substantially disc-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 so as to be attachable with 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 circumference of the insertion opening 26 . The repair valve main body 10 can be connected to the holder 11 through 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. As shown in FIG. The valve body 30 is provided so as to be able to open and close a flow path 33 formed in the body 22 via a stem 31 by rotating an operation handle 32 . A valve seat 34 is attached to the primary side of the valve body 30 in the body 22 , and a valve seat 35 is attached to the secondary side of the valve body 30 in the body 22 via a valve seat receiver 36 . Thus, in this example, the repair valve main body 10 is provided in the ball valve structure.

On the other hand, the holding body 11 is composed of an annular socket member 40 and an annular push ring 41 mounted on the upper part of the socket member 40, which are fixed by connecting bolts 28 such as hexagon socket head bolts. The repair valve main body 10 is connected via the body 11 to the pipe flange 42 of the branch pipe, which is the external pipe on the primary side, by means of a pipe embedding bolt 29 and a connecting nut 25 . Although not shown, the branch pipe is a T-shaped pipe vertically branched from a horizontally arranged water main pipe and connected to the water main pipe.

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

The receptacle member 40 is formed of a metal material in a substantially disk shape, and on the upper surface side of the receptacle member 40 is formed an annular stepped portion 47 having substantially the same diameter as the enlarged diameter stepped portion 45 and for mounting a retainer ring 44. A small-diameter stepped portion 49 for housing a rubber ring 48, which will be described later, is formed following the annular stepped portion 47. As shown in FIG. A projecting portion 50 having a reduced diameter is formed on the inner peripheral side of the bottom surface of the socket member 40, and the projecting portion 50 secures a contact surface for a gasket (not shown) that is attached when joining with an external pipe flange 42. be.
The receptacle member 40 is provided with an outer diameter that allows it to be fixed to the pipe flange 42 with the connection bolt 24 and the connection nut 25 .

The elastic flexible mechanism 12 has the insertion opening 26 formed in the body 22 , a retainer ring 44 and a rubber ring 48 .

The retainer ring 44 is made of a metal material and has an annular shape. An annular ridge portion 52 is formed on the upper inner circumference of the retainer ring 44 so as to protrude toward the inner diameter side. The retaining ring 44 is provided by a split ring, and is provided so as to be attachable to the attachment groove 51 in a state in which the protrusion 52 is engaged with the wide groove 27 due to this split structure.

The rubber ring 48 is made of a highly elastic rubber material and is formed in an annular shape that can be accommodated in the small-diameter stepped portion 49. The rubber ring 48 is mounted between the receptacle member 40 and the insertion port 26 to ensure sealing therebetween. ing.

The extendable and flexible mechanism 12 has a retaining ring 44 and a rubber ring 48 between the insertion opening 26 and the holder 11 in a state in which the insertion opening 26 is loosely fitted on the inner peripheral side of the holder 11 . is installed and constructed. In this case, when the receiving member 40 and the pressing ring 41 are overlapped, the annular stepped portion 47 of the receiving member 40 and the enlarged diameter stepped portion 45 of the pressing ring 41 form the mounting groove 51 for mounting the retainer ring 44, With the rubber ring 48 housed in the small-diameter stepped portion 49 and the retainer ring 44 mounted in the mounting groove 51, the pressing ring 41 and the receptacle member 40 are fixed by the connecting bolt 28 and integrated.

When the push ring 41 is tightened, the rubber ring 48 is pressed via the retainer ring 44, and the protrusion 52 of the retainer ring 44 is locked in the wide groove 27 by the retainer ring 41, thereby separating the socket member 40 and the body from the retainer ring 41. 22 is prevented from slipping out, the rubber ring 48 exerts a sealing property to prevent leakage. In this way, one push ring 41 is used to mount the retainer ring 44 and the rubber ring 48 in a predetermined state, thereby making the apparatus compact.

After the receptacle member 40 and the press ring 41 are combined, an elastically flexible space S is formed between the vicinity of the lower portion of the projection 52 and the wide groove 27. Through the large-diameter stepped portion 46, when an earthquake occurs, the body 22 side arranged on the secondary side can be expanded and contracted with respect to the holding body 11 side arranged on the primary side in the vibration direction and the connection direction, thereby improving earthquake resistance. Demonstrate.

Since the rubber ring 48 ensures the sealing performance between the insertion port 26 and the receptacle member 40 even when the expansion and contraction is performed, the rubber ring 48 can be secured even if the insertion port 26 is greatly inclined with respect to the holder 11 . By exhibiting elastic force, the outer periphery of the insertion port 26 and the inner periphery of the small-diameter stepped portion 49 of the receptacle member 40 are secured to be tightly sealed, thereby reliably preventing leakage.

A rubber cover 53 is provided between the body 22 and the press ring 41. The rubber cover 53 is made of an elastic rubber material and has an annular shape. Detachably mounted where possible. The rubber cover 53 prevents water, dust, etc. from entering the telescopic flexible mechanism 12, and prevents the repair valve main body 10 from being greatly tilted or pulled out in the direction of the flow path by an external force such as an earthquake. Even if it is bent, it can be deformed to prevent it from falling off.

The tilt correction jig 20 shown in FIGS. 3(a) to 3(c) is formed in a substantially cylindrical shape by using a resin pipe such as a VU pipe (vinyl chloride pipe) as a material. 20a provides a bipartite structure. The height H of the tilt correction 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 holder 11, and is slightly shorter in this example. H is set to 67 mm, the distance from the bottom surface of the flange portion 21 to the top surface of the push ring 41 is set to 70 mm, and the face-to-face dimension of the flange portion of the seismic repair valve is set to 150 mm.

A plurality of notch-shaped locking portions 60 are formed along the circumferential direction at the upper and lower ends of the tilt correction jig 20 . The upper and lower locking portions 60 are formed at positions corresponding to the connection bolts 24 and 28 and the connection nut 25 mounted on the flange portion 21 side of the body 22 with a predetermined notch width and depth. be. In this embodiment, on the upper end side of the tilt correction jig 20, four locking portions 60 corresponding to the positions of the four connection nuts 25 (connection bolts 24) are formed, and on the lower end side, 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 main body 10 .

1 and 2, the tilt correction jig 20 is mounted in a state in which both upper and lower ends thereof are sandwiched between the flange portion 21 and the holder 11, and in a state surrounding the repair valve main body 10. As shown in FIG. At this time, each divided body 20a is attached to the connection bolts 24 and 28 and the connection nut 25 attached to the flange portion 21 and the holding member 11 in a state in which the locking portions 60 are locked from the outside. As a result, the tilt correction jig 20 is fixed to the flange portion 21 and the holder 11, and the tilt correction jig 20 can be mounted while being elastically bent. Since the stem housing portion 61 is accommodated in the relief portion 62 , the tilt correction jig 20 can be attached to the outer periphery of the repair valve main body 10 while avoiding the stem housing portion 61 .
Although not shown, after the tilt correction jig 20 is mounted, a rubber band may be wrapped around the outer periphery of the tilt correction jig 20 or tied with a string. You can maintain the installed state.

FIG. 4A shows another example of the tilt correction jig. This tilt correction jig 70 is provided in an integral structure having an opening 71 at the free end by cutting a portion of the cylindrical portion. As shown in FIG. 4(b), a cutout portion 72 is formed at an angle of approximately 90° on the outer peripheral surface on the opposite side of the opening portion 71, and the tilt correction jig 70 is bent near the cutout portion 72. As shown in FIG. It becomes transformable. As a result, the inclination correction jig 70 is provided in a so-called hinge structure, and can be attached to the flange portion 21 and the holder 11 by opening the opening portion 71 while elastically deforming the notch portion 72 as a center. .

5(a) and 5(b) show another example of the seismic repair valve. In this seismic repair valve, a repair valve main body 80 is provided with an extension pipe 81 extending in the flow direction, 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 pressing ring 41 of the holding body 11 is approximately the distance between the bottom surface of the flange portion 21 of the repair valve main body 10 and the upper surface of the pressing ring 41 (70 mm). It is provided integrally or separately at a predetermined position of the extension pipe 81 so as to be the same. As a result, the tilt correction jig 20 having the same height H as the tilt correction jig 20 can be attached between the fixing flange portion 82 and the holder 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 also be connected to various branch pipes other than T-shaped pipes, and can also be connected to vertical pipes other than branch pipes. In this embodiment, the repair valve main body has a ball valve structure, but it can also be provided in various valve structures other than the ball valve.

The inclination correcting jig can be formed using a resin material other than the VU tube, or using other materials. When the tilt correction jig has a split structure, it may be provided in a split structure of two or more splits.
Only one locking portion may be formed for the tilt correction jig, and the number, width, and depth of the locking portions depend on the number, nominal diameter, and length of the connecting bolts and connecting nuts. The shape of the notch of the escape portion can be arbitrarily set according to the size of the stem housing portion.

Next, the operation of the above embodiment of the seismic repair valve of the present invention will be described.
1 and 2, the body 22 of the repair valve main body 10 is connected to the holding body 11 via the telescopic and flexible mechanism 12, and the body 22 is prevented from slipping out by the retaining ring 44, and is secured by the rubber ring 48. Since the valve body 10 is provided in a state in which sealing performance and expansion/contraction flexibility are ensured, the repair valve main body 10 can be expanded/contracted/flexible relative to the holding member 11 in the flow direction and vibration direction 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 it collides with the valve housing due to an earthquake and receives an impact, it can exhibit earthquake resistance through the telescopic flexible mechanism 12, preventing damage to parts and water leakage. can.

When the repair valve main body 10 is flexed and tilted, the body 22 side is in an upright state with respect to the holding body 11 side, that is, the whole repair valve is in an upright state, and the flange portion 21 and the holding body 11 are placed in an upright state. This upright state can be maintained by mounting the tilt correction jig 20 in a state surrounding the repair valve main body 10 while sandwiching the upper and lower ends of the tilt correction jig 20.例文帳に追加As a result, after the inclination correcting jig 20 is mounted, the bottom surface of the flange portion 21 and the top surface of the pressing ring 41 are in contact with the upper end and the lower end of the jig, respectively, so that the flange portion 21 and the pressing ring 41 are regulated in a substantially horizontal state. By doing so, the upright state of the repair valve can be maintained while the vibration is prevented. Therefore, it is possible to continue to use the repair valve after the repair valve has been flexed.
Moreover, since the tilt correction jig 20 can be mounted using the flange portion 21 and the holding body 11, the tilt correction jig 20 can be adjusted to a predetermined state while regulating the position without providing a separate mounting portion on the repair valve. Can be worn.

When an earthquake or the like occurs while the tilt correction jig 20 is mounted, the tilt correction jig 20 appropriately regulates the expansion and contraction of the repair valve main body 10 with respect to the holding body 11, and the tilt correction jig 20 has the It can be stretched and flexed while absorbing a shock by its elasticity. As a result, rapid expansion and contraction of the repair valve main body 10 can be suppressed, and damage to the parts can be prevented. In this case, when the tilt correction jig 20 is damaged due to tilting of the repair valve main body 10 with respect to the holding member 11 due to an earthquake, the tilt correction jig 20 is removed, and another tilt correction jig is installed while the repair valve main body 10 is erected again. 20 can be installed in the same manner as before.

By providing the inclination correction jig 20 with a VU pipe, the notch-shaped engaging portion 60 and the escape portion 62 can be easily processed using a general-purpose pipe, and manufacturing is also 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.

When mounting the inclination correction jig 20 having the two-part structure shown in FIG. 3, in FIGS. The repair valve main body 10 is attached so as to be pinched from the side surface while allowing the stem housing portion 61 to escape. At this time, while bending each divided body 20a by using elasticity, the connecting bolt 24 and the connecting nut 25 can be locked by hooking the locking portion 60 from the outside of the connecting bolt 24 and the connecting nut 25 so as to be fixed. is easy, and removal is also easy. After mounting, the periphery of the engaging portion 60 is engaged with the connection bolts 24, 28 and the connection nut 25, thereby preventing spontaneous falling off.

On the other hand, as shown in FIG. 4, when the inclination correction jig 70 having an integral structure is mounted, the inclination correction jig 70 is bent and deformed in the direction of opening the opening 71 around the notch 72. From this opening 71, the side surface of the repair valve body 10 can be attached in a surrounding state. In this case as well, the stem accommodating portion 61 can be released into the relief portion 62 in the same manner as described above, and the locking portion 60 can be easily locked by hooking the locking portion 60 from the outside of the connection bolts 24, 28 and the connection nut 25. . After the inclination correcting jig 70 is mounted, a force is applied through the notch 60 in the direction of restoring the original cylindrical shape, so that the mounting state can be maintained by preventing the jig from falling off naturally.

In the case of any of the tilt correction jigs 20 and 70 described above, since the engaging portions 60 are formed by notches, the portion sandwiched between the engaging portions 60 becomes thin rib-like. , the jig as a whole can be easily bent, making attachment and detachment easier.

As shown in FIG. 5, a repair valve main body 80 is formed by an extension pipe 81, and a fixing flange portion 82 is provided in the middle of the extension pipe 81. In the case where the distance between the gaps is provided so that the inclination correction jig 20 having a height H can be attached, the inclination correction jig 20 can be used in common even when the repair valve main body 80 is provided in an elongated shape, and the repair valve can be used in common. can be held upright. Therefore, even when the repair valve main body 80 is extended and installed at a deep position, one type of tilt correction jig 20 or tilt correction jig 70 can be used without separately providing tilt correction jigs of different modes. 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 above embodiments, and is within the spirit of the invention described in the claims of the present invention. and can be modified in various ways.

REFERENCE SIGNS LIST 10, 80 repair valve main body 11 holder 12 telescopic flexible mechanism 20, 70 tilt correction jig 20a divided body 21 flange portion 24 connection bolt 25 connection nut 26 insertion opening 40 receptacle member 41 push ring 44 retainer ring 48 rubber ring 60 Locking portion 71 Opening 72 Notch 81 Extension pipe 82 Fixing flange H Height of tilt correction jig

Claims (5)

A flange portion is formed on the secondary side of the body of the repair valve main body, and an insertion port is formed on the primary side of the body, respectively. It is inserted in the state, and has a built-in expansion and contraction flexible mechanism in which a retaining ring and a rubber ring are mounted between the insertion port and the holding body, and when the repair valve body is bent and tilted, the repair valve body With the valve main body in an upright state, a tilt correction jig is attached between the flange portion or the fixing flange portion provided in the middle of the elongated extension pipe extending the insertion port and the holding body. , the tilt correction jig is mounted so as to surround the repair valve main body in a state of being sandwiched between the flange portion or the fixing flange portion and the holding body . The inclination correction structure of the repair valve. The gap distance between the fixing flange portion and the holding body is substantially the same as the gap distance between the flange portion and the holding body, and the height of the tilt correction jig is substantially the same. 2. The tilt correction structure for an earthquake-resistant repair valve according to claim 1, wherein a tilt correction jig for pipe installation can be mounted between said fixing flange portion and said holder. One or a plurality of notch-shaped engagement portions are formed in the tilt correction jig, and the engagement portions are engaged with connection bolts and connection nuts attached to the repair valve main body and the holding body. 3. The tilt correcting structure for an earthquake-resistant repair valve according to claim 1 or 2, wherein the tilt correcting jig is fixed in a state where the tilt correcting jig is fixed. 4. The tilt correcting structure for an earthquake-resistant repair valve according to claim 1, wherein the tilt correcting jig is provided in a two-part or more split structure. 5. The apparatus according to any one of claims 1 to 4, wherein the inclination correction jig is provided in an integral structure having an opening at the free end, and a notch for bending deformation is formed on the opposite side of the opening. The inclination correction structure of the described seismic repair valve.

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