Jig for duct line

Abstract

To provide a jig for a duct line which enables maintenance of an opening / closing plug in a state that circulation of fluid flowing in a passage is maintained.SOLUTION: A jig 10 for a duct line is used for an opening / closing plug GV which opens or closes a passage of a pipe P. The opening / closing plug GV has: a pipe fixture part VB fixed to the pipe P and forming a part of the passage; an opening / closing plug body VC which is inserted into the pipe fixture part VB to penetrate through the passage BF and in which a passage hole Ch allowing the passage to communicate therewith is formed; and a fixing member VN which is threadedly engaged with the insertion tip side of the opening / closing plug body VC and fixes the opening / closing plug body VC to the pipe fixture part VB. The jig 10 for the duct line includes: a rotary member 50 which engages with the fixing member VN and rotates with the fixing member VN and in which an operated part 54 exposed to the outside is formed; and a support member 20 which is fixed to the pipe P or the pipe fixture part VB and rotatably supports the rotary member 50.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The technology disclosed in this application relates to a pipeline jig that is applied to an on-off valve. [Background technology]

[0002] Conventionally, various types of valves have been used as opening and closing valves for opening and closing the flow path of a pipe. Among them, there is a type in which an opening and closing member with a flow hole is inserted into a valve body and penetrated into the flow path, and then a nut member is screwed and screwed into the penetrating tip of the opening and closing member (hereinafter referred to as a "nut valve"). In such a "nut valve," when the "opening and closing member" is attached or detached for maintenance or the like, if either the "opening and closing member" or the "nut member" is turned with a tool, the other will rotate together. Therefore, Patent Document 1 proposes a jig that is provided with a rotation restriction part that restricts the rotation of the nut member and rotates the opening and closing member to release the screwing with the nut member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-207019 A Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, in order to rotate the opening and closing member, if the penetrating direction of the flow hole of the opening and closing member is arranged in a direction perpendicular to the flow path, the flow of the fluid flowing through the flow path will be blocked.

[0005] In consideration of the above, the present disclosure has an object to provide a pipeline tool that enables maintenance of an opening and closing valve while maintaining the flow of fluid within the flow path. [Means for solving the problem]

[0006] A pipeline fixture of a first aspect of the present disclosure is a pipeline fixture used in an opening and closing valve that opens and closes a flow path of a pipe, the opening and closing valve having a pipe fixing part that is fixed to the pipe and forms part of the flow path, an opening and closing valve body that is inserted into the pipe fixing part so as to penetrate the flow path and has a flow path hole that connects the flow paths, and a fixing member that is screwed onto the insertion tip side of the opening and closing valve body and fixes the opening and closing valve body to the pipe fixing part, a rotating member that engages with the fixing member and rotates together with the fixing member and has an operated part exposed to the outside formed therein, and a support member that is fixed to the pipe or the pipe fixing part and rotatably supports the rotating member.

[0007] The first aspect of the pipe fixture is used for an on-off valve. In this on-off valve, a piping fixing part constituting a part of a flow path is fixed to a pipe, an on-off valve body having a flow path hole for communicating the flow paths is inserted through the piping fixing part so as to pass through the flow path, and a fixing member is screwed into the insertion tip side of the on-off valve body to fix the on-off valve body to the piping fixing part.

[0008] The rotating member of the pipe fixture engages with the fixed member of the open / close valve and rotates together with the fixed member, and has an operated portion that is exposed to the outside. The support member of the pipe fixture is fixed to the pipe or the pipe fixing portion, and rotatably supports the rotating member.

[0009] During maintenance of the on-off valve, the rotation of the rear insertion end of the on-off valve body is restricted, while the operated portion is gripped and rotated in a direction that releases the screw engagement between the fixing member and the on-off valve body. This allows the on-off valve body to be removed from the piping fixing portion while maintaining the direction of the flow hole of the on-off valve body. Therefore, maintenance of the on-off valve can be performed while maintaining the flow of fluid through the flow path.

[0010] In the second embodiment of the pipeline fixture, the support member has a first support member arranged on the insertion side of the opening / closing valve body, sandwiching the piping, and a second support member arranged on the insertion tip side, and the first support member and the second support member are fixed to the piping or the piping fixing portion by bolting them together.

[0011] According to the pipeline jig of the second aspect, the first support member and the second support member are fastened with bolts with the pipe sandwiched therebetween, so that the support members can be firmly fixed to the pipe or the pipe fixing portion.

[0012] In a third aspect of the pipeline fixture, the first support member and the second support member are fastened with a bolt on the outside of the on-off valve in a direction intersecting with the extension direction of the pipe.

[0013] According to the third aspect of the pipeline fixture, the fastening portion between the first support member and the second support member is not positioned in the extension direction of the pipe, so there is no interference between the pipe and the fastening portion of the support member, and the support member can be easily fixed.

[0014] In a fourth aspect of the pipeline fixture, the support member is formed with a bag attachment portion for attaching a no-blow work bag.

[0015] According to the pipeline tool of the fourth aspect, work can be performed by attaching a no-blow work bag to the bag attachment portion formed on the support member.

[0016] The pipeline fixture of a fifth aspect includes a seal member that seals between the support member and the rotating member.

[0017] According to the fifth aspect of the pipeline fixture, the gap between the support member and the rotating member is sealed, so that even if fluid leakage occurs at the insertion tip side of the open / close valve body, leakage of fluid to the outside from between the support member and the rotating member can be suppressed. Effect of the Invention

[0018] Since the present disclosure has the above-mentioned configuration, maintenance of the opening and closing valve can be performed while maintaining the flow of fluid through the flow path. [Brief description of the drawings]

[0019] [Figure 1]FIG. 2 is a side view of the pipeline jig of the present embodiment, as viewed from the side of the pipeline. [Diagram 2] FIG. 2 is an exploded perspective view of the pipeline jig and the opening and closing valve of the present embodiment. [Diagram 3] 1 is a side cross-sectional view of a pipeline jig according to an embodiment of the present invention, viewed from an axial direction of a pipe. [Figure 4] FIG. 2 is a top view of the pipeline jig of the present embodiment attached to an opening and closing valve. [Diagram 5] FIG. 2 is a bottom view of the pipeline jig of the present embodiment attached to an opening and closing valve. [Figure 6] FIG. 2 is a side view of the pipeline jig of the present embodiment as viewed from the axial direction of the pipe. [Figure 7] 11 is a side cross-sectional view of a pipeline jig according to a modified example of the embodiment, as viewed in the axial direction of a pipe. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] A pipeline jig 10 according to an embodiment of the present disclosure will be described with reference to the drawings. Fig. 1 shows a side view of the pipeline jig 10 according to this embodiment applied to an open / close valve GV. In this embodiment, the extension direction of the pipe P is the left-right direction, the side perpendicular to the pipe P from which an open / close valve main body VC of the open / close valve GV, which will be described later, is inserted is referred to as the upper side (upper side in Fig. 1), and the insertion tip side of the open / close valve main body VC (lower side in Fig. 1) is referred to as the lower side.

[0021] <Shut-off valve> 2, the on-off valve GV has a piping fixing part VB, an on-off valve main body VC, a washer member VW, and a fixing member VN. The piping fixing part VB has a flow path Bf formed therein through which a fluid (in this embodiment, a flammable gas) flows, and has a pair of piping connection ports Bp, Bp, a plug insertion port Bi, and a plug main body through-hole Bo.

[0022] The pair of pipe connection ports Bp, Bp are arranged to face each other, and each is configured to be connected to the pipe P by a screw joint. The outer periphery of each of the pair of pipe connection ports Bp, Bp is formed in a polygonal shape ("hexagonal" in this embodiment). The flow path Bf is formed between the pipe connection ports Bp, Bp, and is a flow path for leading the flammable gas supplied from one pipe P to the other pipe P.

[0023] The plug insertion port Bi and the plug body through port Bo are open across the flow path Bf in a direction intersecting the flow direction of the flammable gas. The plug body insertion port Bi is an opening for inserting the open / close plug body VC, and the plug body through port Bo is an opening for passing the open / close plug body VC inserted through the plug body insertion port Bi to the opposite side of the flow path Bf. An insertion side flange portion Bis is formed on the outer periphery of the plug insertion port Bi, and a penetration tip flange portion Bos is formed on the outer periphery of the plug body through port Bo.

[0024] The valve body VC is formed in a generally truncated cone shape with a small diameter at the tip, and has a flow passage hole Ch penetrating in a direction intersecting the axial direction. A threaded portion Cb is formed at the tip of the valve body VC on the small diameter side in the axial direction, and a tool attachment portion Ct for attaching a tool such as a wrench is formed on the axial opposite side of the threaded portion Cb. The valve body VC is attached to the piping fixing portion VB by inserting the threaded portion Cb side through the valve body insertion port Bi and protruding it outward from the valve body through port Bo, and fastening it by screwing the fixing member VN into the threaded portion Cb with the washer member VW interposed therebetween. The valve body VC can be rotated 90° with a tool to move the flow passage hole Ch between an open position where the flammable gas flows and a closed position where the flow is stopped.

[0025] The fixing member VN has a female thread on its inner periphery that can be screwed into the threaded portion Cb of the open / close valve body VC, and its outer periphery Nc is formed in a polygonal shape ("hexagonal" in this embodiment).

[0026] <Pipeline fixture> 1 to 3, the pipeline jig 10 includes a support member 20 and a rotating member 50. The support member 20 includes a first support member 22 and a second support member 30.

[0027] The first support member 22 has an annular ring portion 24, and a groove 24A for accommodating an upper O-ring O1 is formed on the inner circumference of the ring portion 24. A brim-shaped bag attachment portion 25 is formed on the upper outer circumference of the ring portion 24. A no-blow work bag B is attached to the bag attachment portion 25 during work. A pair of engagement portions 26 are formed on the lower surface of the ring portion 24 at positions facing each other in a plan view. Each engagement portion 26 is formed as a notch that respectively engages with a pair of pipe connection ports Bp, Bp.

[0028] A pair of arm portions 28 are formed on the first support member 22. Each arm portion 28 is plate-shaped and is arranged so that the plate surface faces the up-down direction. A recessed hole 28A is formed at the tip of each arm portion 28 for fastening a hinge bolt 38 described below. The base end of each arm portion 28 is fixed on the underside of the ring portion 24 at a position rotated 90° from the position where the pair of engagement portions 26 are formed. The pair of arm portions 28 are arranged at positions facing each other and extend outward in the circumferential direction of the ring portion 24.

[0029] The second support member 30 has an outer support member 32 and an inner support member 40. The outer support member 32 is cylindrical with a bottom, and a pair of engagement portions 33 are formed on the upper end surface of the outer support member 32 at positions facing each other in a plan view. Each engagement portion 33 is formed as a notch that respectively engages with a pair of pipe connection ports Bp, Bp. An opening 32A is formed in the bottom of the outer support member 32, penetrating the bottom.

[0030] A pair of bolt retaining portions 34 are formed on the outer peripheral side surface of the outer support member 32. The pair of bolt retaining portions 34 are fixed to the outer peripheral side surface of the outer support member 32 at positions rotated 90° from the positions at which the pair of engagement portions 33 are formed. Each bolt retaining portion 34 has an attachment portion 35 disposed along the outer peripheral side surface of the outer support member 32 and a retaining portion 36 formed continuously from the attachment portion 35 and extending radially outward of the outer support member 32.

[0031] 5, the holding portion 36 is U-shaped in plan view, and has a holding recess 36A. The holding recess 36A is arranged so that an open portion faces radially outward of the outer support member 32. A hinge bolt 38 is attached to the holding portion 36 via a pin 37. The hinge bolt 38 is rotatable around the pin 37. A fastening screw member 39 is screwed into a male threaded portion on the tip side of the hinge bolt 38. A female threaded hole 32A is formed in a side wall of the outer support member 32, into which a rotation restricting member 42, described later, is inserted.

[0032] The inner support member 40 is housed inside the outer support member 32. The inner support member 40 is cylindrical, with an outer diameter set slightly smaller than the inner diameter of the outer support member 32, and a stopper hole 41 is formed on the outer peripheral side surface corresponding to the female threaded hole 32A. The tip of a rotation restricting member 42 screwed into the female threaded hole 32A is inserted into the stopper hole 41, and the relative rotation between the outer support member 32 and the inner support member 40 is restricted.

[0033] A large diameter portion 43 and a small diameter portion 44 are formed on the inside of the cylinder of the inner support member 40. The inner diameter of the large diameter portion 43 is slightly larger than the outer diameter of the penetrating tip flange portion Bos of the opening / closing valve GV, and the penetrating tip flange portion Bos is housed inside. The inner diameter of the small diameter portion 44 is slightly larger than the upper outer diameter of the rotating member 50 described later, and the rotating member 50 is housed inside. A groove 43A is formed on the inner peripheral surface of the large diameter portion 43, and an O-ring O2 is disposed therein. The O-ring O2 seals between the outer surface of the penetrating tip flange portion Bos and the inner peripheral surface of the large diameter portion 43. A groove 44A is formed on the inner peripheral surface of the small diameter portion 44, and an O-ring O3 is disposed therein. The O-ring O3 seals between the outer surface of the rotating member 50 and the inner peripheral surface of the small diameter portion 44.

[0034] The rotating member 50 has a cylindrical tube portion 52 and an operated portion 54. The outer diameter of the tube portion 52 is slightly smaller than the inner diameter of the large diameter portion 43, and the tube portion 52 is housed inside the large diameter portion 43. The base end side of the tube portion 52 is polygonal in shape, with an inner wall 52A engaging with the outer periphery of the fixed member VN. A groove 53 is formed on the outer periphery of the tip side of the tube portion 52. An annular stop ring 51 is fixed to the lower surface of the inner support member 40. The stop ring 51 engages with the groove 53, and the tube portion 52 is rotatably supported by the inner support member 40. The tip side of the tube portion 52 protrudes outward from an opening 32A at the bottom of the outer support member 32. The operated portion 54 is fixed to the tip of the tube portion 52 and protrudes outward from the opening 32A. The operated portion 54 is formed integrally with the tube portion 52. The operated portion 54 has a polygonal outer periphery (hexagonal in this embodiment), and is configured so as to be able to rotate together with the cylindrical portion 52 by being gripped and rotated with a tool.

[0035] <Action and effect> When attaching the pipeline jig 10 during maintenance of the on-off valve GV, first, the assembled rotating member 50 and inner support member 40 are inserted into the opening 32A from the operated portion 54 side of the rotating member 50, and placed inside the outer support member 32. Then, the rotation restricting member 42 is screwed into the female threaded hole 32A and inserted into the stop hole 41, thereby preventing relative rotation between the outer support member 32 and the inner support member 40 (see FIG. 1).

[0036] Next, the first support member 22 is placed on the plug body insertion port Bi side, which is the insertion source side of the open / close valve GV, sandwiching the pipe P, and the pair of engagement parts 26 are engaged with the upper outer periphery of the pair of pipe connection ports Bp, Bp. Also, the second support member 30, to which the rotating member 50 is assembled to the inner support member 40, is placed on the plug body through port Bo side, which is the insertion tip side of the open / close valve GV, sandwiching the pipe P, and the pair of engagement parts 33 are engaged with the lower outer periphery of the pair of pipe connection ports Bp, Bp. At this time, the fixing member NV of the open / close valve GV is inserted inside the cylindrical part 52 of the rotating member 50. Then, the hinge bolt 38 is rotated to engage with the recessed hole 28A, and the screw member 39 is screwed into the male threaded part on the tip side of the hinge bolt 38, thereby fastening the arm part 28 and the holding part 36 (see FIG. 6). As a result, the installation of the pipeline jig 10 is completed with the fixing member VN of the open / close valve GV fixed to the rotating member 50. In this state, the no-blow work bag B is attached to the bag attachment portion 25 (see FIG. 3).

[0037] Maintenance of the on-off valve GV is performed by removing the on-off valve body VC from the piping fixing part VB and reapplying grease, etc. To remove the on-off valve body VC, the tool attachment part Ct in the no-blow work bag B is grasped and fixed with a tool, and the operated part 54 of the rotating member 50 is grasped with another tool and rotated in a direction that releases the screw engagement between the fixed member VN and the threaded part Cb. In this way, with the flow passage hole Ch of the on-off valve body VC held in the open position, the fixed member VN can be rotated together with the rotating member 50 to release the screw engagement between the fixed member VN and the threaded part Cb, and the on-off valve body VC can be removed.

[0038] According to the pipeline jig 10 of this embodiment, the on-off valve body VC can be removed from the piping fixing part VB while maintaining the direction of the flow passage hole Ch of the on-off valve body VC. Therefore, maintenance of the on-off valve GV can be performed while maintaining the flow of flammable gas through the flow passage.

[0039] Furthermore, in this embodiment, the support member 20 is fixed to the piping fixing portion VB by bolting the first support member and the second support member together with the piping P sandwiched therebetween, so that the support member 20 can be firmly fixed to the piping fixing portion VB.

[0040] In addition, in this embodiment, the arm portion 28 of the first support member 22 and the holding portion 36 of the second support member 30 are not disposed in the extension direction of the piping P, and the fastening portion between the first support member 22 and the second support member 30 is disposed outside in a direction perpendicular to the extension direction of the piping P. Therefore, there is no interference between the piping P and the fastening portion of the support member 20, and the support member 20 can be easily fixed.

[0041] In this embodiment, since the bag attachment portion 25 is formed on the first support member 22, a no-blow work bag can be attached to this bag attachment portion 25, and the work can be easily performed.

[0042] In addition, this embodiment is provided with an O-ring O3 that seals between the outer surface of the rotating member 50 and the inner surface of the small diameter portion 44, thereby preventing leakage of flammable gas to the outside from between the rotating member 50 and the inner support member 40.

[0043] Furthermore, in this embodiment, relative rotation between the outer support member 32 and the inner support member 40 is prevented by screwing the rotation restricting member 42 into the female threaded hole 32A and inserting it into the stop hole 41, and for the second support member 32, the outer support member 32 and the inner support member 40 can be separate members. Therefore, even if the axial size of the open / close valve body VC is different, it can be used in correspondence with a different open / close valve GV by simply replacing the set of the inner support member 40 and the rotating member 50 with one that matches the size.

[0044] <Modification> In the above embodiment, the first support member and the second support member are fixed to the pipe fixing portion VB by bolt fastening, but other configurations may be used. For example, as shown in Fig. 7, a clip 60 may be used. In this case, for the first support member 22, a clip engagement portion 64 is formed on the ring portion 24 instead of the arm portion 28, and the tip ring 62 of the clip 60 can be engaged with the clip engagement portion 64 to be fixed. [Explanation of symbols]

[0045] 10 Pipeline fixture P piping GV Opening and Closing Valve VC Opening and Closing Valve Body VB piping fixing part VN Fixing material 20 Support member 50 Rotating member 22 First support member 30 Second support member 25 Bag attachment part O2 O-ring (sealing material) O3 O-ring (sealing material)

Claims

1. A pipe jig used for an opening and closing valve that opens and closes a flow path of a pipe, The opening and closing valve is A pipe fixing part that is fixed to the pipe and forms a part of the flow path; an on-off valve body that is inserted through the piping fixing portion so as to penetrate the flow path and has a flow path hole that communicates the flow path; a fixing member that is screwed into the insertion tip side of the valve body and fixes the valve body to the piping fixing portion, a rotating member that is engaged with the fixed member and rotates together with the fixed member, and that has an operated portion that is exposed to the outside; a support member fixed to the pipe or the pipe fixing portion and configured to rotatably support the rotating member; A pipe fixture equipped with the above.

2. The support member has a first support member arranged on the insertion origin side of the opening / closing valve body with the piping interposed therebetween, and a second support member arranged on the insertion tip side, and the first support member and the second support member are fastened to the piping or the piping fixing portion by bolts. The pipe jig according to claim 1 .

3. The first support member and the second support member are fastened by a bolt on the outside of the opening / closing valve in a direction intersecting with the extending direction of the piping. The pipe jig according to claim 2 .

4. 2. The pipe jig according to claim 1, wherein the support member is formed with a bag attachment portion for attaching a no-blow work bag.

5. A seal member is provided to seal between the support member and the rotating member. The pipe jig according to claim 1 .

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