Fluid regulator installation device

Abstract

To provide a fluid regulator installation device which can install a fluid regulator at a proper position without damage by bringing into contact.SOLUTION: A fluid regulator installation device 1 includes: a case body 10 attached to a fluid pipe 2 in a sealing manner; and an inserting machine 190 for inserting a partitioning valve 4 as a fluid regulator at a cut portion of the fluid pipe 2 inside the case body 10. The case body 10 includes a main part 91a for guiding the partitioning valve 4 in a downward inclination toward the cut portion of the fluid pipe 2, and a work window 91b as an opening is formed below a center axis T2 of the main part 91a. The inserting machine 190 has: a body 201 of a valve suspension metal tool 195 to which the partitioning valve 4 is attached; and jigs 210a, 210b which are provided on the body 201 and serve as a pair of support parts for supporting the partitioning valve 4 by being in contact with at least two positions on an inner peripheral face 91h below the center axis T2 of the main part 91a. The jigs 210a, 210b are arranged across the work window 91b.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a fluid regulator installation device in which a case body is installed in a sealed manner on a fluid pipe, and an insertion device provided on the case body is used to insert a fluid regulator into a cut portion of the fluid pipe inside the case body. [Background technology]

[0002] Conventionally, when carrying out construction work on a portion of an existing fluid pipe, a flow control device is provided at a predetermined location in the fluid flow path, and the device comprises a case body that is hermetically attached to the fluid pipe and a flow control device such as a valve body or plug that is inserted into the cut point of the fluid pipe inside the case body, and the flow of the fluid is controlled by temporarily stopping the flow of fluids such as water or gas, or by changing the flow path to a branch pipe or the like connected to the fluid pipe.

[0003] This fluid control installation device, which installs a fluid control valve inside the case body, is capable of installing a fluid control valve at the cut point of the fluid pipe inside the case body by inserting the fluid control valve installed inside the case body into the cut point of the fluid pipe using an insertion device installed on the case body.

[0004] In this type of fluid control installation device, for example, when forming a flow path that flows naturally or on a slope, or when the fluid pipe has unevenly sunk due to changes over time after being buried, the fluid pipe on which the fluid control installation device is to be installed may be extended at a predetermined angle inclined relative to the horizontal plane (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2016-161083 A (pages 10-11, figures 8-9) Summary of the Invention [Problem to be solved by the invention]

[0006] In the fluid control installation device described in Patent Document 1, the fluid pipe extends at a predetermined angle with respect to the horizontal plane, and the fluid control device installed inside the case body connected perpendicular to the inclined fluid pipe is inserted at a downward slope relative to the vertical direction toward the cut point of the fluid pipe. Therefore, there is a problem in that the fluid control device sags due to the vertical downward gravity generated by the load of the fluid control device and is inserted while making localized sliding contact with the inner surface of the case body, which may cause damage or make it impossible to install in the appropriate installation position.

[0007] The present invention has been made in view of these problems, and aims to provide a fluid regulator installation device that can be installed in an appropriate position without damaging the fluid regulator through contact. [Means for solving the problem]

[0008] In order to solve the above problems, the flow control installation device of the present invention is A fluid control installation device having a case body that is attached to a fluid pipe in a sealed manner, and an insertion device that inserts a fluid control device into a cut portion of the fluid pipe inside the case body, The case body has a body portion that guides the fluid control device downwardly toward the cut portion of the fluid pipe, and an opening is formed below the central axis of the body portion, The insertion device has an insertion shaft to which the fluid control device is attached, and a pair of support parts provided on the insertion shaft and abutting at least two points on the inner surface below the central axis of the body to support the fluid control device, and the pair of support parts are arranged so as to straddle the opening. According to this feature, even if the load causes the fluid control device to sag vertically downward when inserted, the pair of support parts abut at two points on the inner surface of the body, thereby stably supporting the insertion shaft part and moving across the opening without falling, so that the fluid control device can be installed in the appropriate position without being damaged by contact.

[0009] The pair of support portions are characterized in that they are arranged so as to straddle the opening in the circumferential direction. According to this feature, when inserting the fluid control device, the pair of support parts can pass through both sides of the opening, so that the support parts can be inserted further in to support the insertion shaft part.

[0010] The pair of support portions are characterized by being disposed at approximately the same position in the insertion direction of the fluid control device. According to this feature, the insertion shaft portion can be supported in a circumferentially balanced manner.

[0011] The pair of support portions are characterized by being disposed at different positions in the insertion direction of the fluid control device. According to this feature, the insertion shaft can be supported in a well-balanced manner in the insertion direction.

[0012] The body of the case body is formed in a substantially cylindrical shape, and the pair of support portions extend in a radial direction of the body. According to this feature, a pair of support parts extending radially from the body can be brought into contact with the inner surface of the approximately cylindrical body approximately perpendicularly, thereby enabling stable support of the fluid control element and preventing misalignment in the circumferential direction.

[0013] The pair of support portions are characterized in that they are disposed on the outer diameter side of the insertion shaft portion. This feature makes it easier to prevent contact between the insertion shaft and the body of the case body.

[0014] The pair of support portions are provided on an extension member that extends from the insertion shaft portion along the insertion direction of the fluid control device. According to this feature, the support portion extends in the insertion direction, so that the fluid regulator can be stably supported.

[0015] the case body has an on-off valve on the fluid pipe side of the body portion, The pair of support portions are provided at positions where the fluid control device does not reach the on-off valve when the fluid control device is inserted up to the cut portion of the fluid pipe. According to this feature, it is possible to prevent the sliding contact marks of the support part from remaining on the valve body of the on-off valve, which would affect the opening and closing and sealing properties of the on-off valve. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a front view showing a flow control installation device according to an embodiment of the present invention installed on the upstream side of a specific area in a fluid pipe. FIG. [Figure 2] 1 is a longitudinal cross-sectional view showing the internal structure of a flow control installation device as viewed from the front side before a gate valve is inserted into a housing. FIG. [Figure 3] 1 is a longitudinal cross-sectional view showing the internal structure of a flow control installation device as viewed from the pipe axis side before a gate valve is inserted into a housing. FIG. [Figure 4] 10 is a vertical cross-sectional view showing the internal structure of the flow control installation device after the gate valve has been inserted into the housing, as viewed from the front side. FIG. [Figure 5] 10 is a longitudinal cross-sectional view showing the internal structure of the flow control installation device after the gate valve has been inserted into the housing, as viewed from the pipe axis side. FIG. [Figure 6] (a) is a right side view showing the valve hanger, and (b) is a cross-sectional view taken along the line AA in (a). [Figure 7] 6(b), (b) is a side view showing the jig, (c) is a CC cross-sectional view of (b), and (d) is a view showing the jig as seen from its end face. [Figure 8] 10(a) and 10(b) are schematic diagrams showing the trajectory of the jig as it moves in response to the insertion of the gate valve, as viewed from the front side. [Figure 9] 10(a) and 10(b) are schematic diagrams showing the trajectory of the jig as it moves in response to the insertion of the gate valve, as viewed from the pipe axis side. [Figure 10] 10 is a vertical cross-sectional view showing the inside of the case body as viewed from the front side when the jig passes through the working window. FIG. [Figure 11] 10 is a vertical cross-sectional view showing the inside of the case body as viewed from the tube axis side when the jig passes through the working window. FIG. [Figure 12] 12(a) is a cross-sectional view taken along line DD in FIG. 10, and FIG. 12(b) is a cross-sectional view taken along line EE in FIG. [Figure 13] FIG. 1(a) is a right side view showing a valve hanger fitting as a modified example of the present invention, and FIG. 1(b) is an FF cross-sectional view of FIG. [Figure 14] 14 is a vertical cross-sectional view showing the state in which the inside of the case body is viewed from the tube axis side when the support portion as the modified example shown in FIG. 13 passes through the access window. FIG. [Figure 15] 15 is a cross-sectional view of FIG. 14 . [Figure 16] 10(a) to 10(c) are schematic diagrams showing arrangements of support parts according to modifications of the present invention. [Example]

[0017] A flow control installation device according to an embodiment of the present invention will be described with reference to Figures 1 to 12. In the following description, the near side of Figure 1 will be referred to as the front (front) of the flow control installation device, the far side as the rear, the upper left side as the left side, and the upper right side as the right side.

[0018] As shown in Figure 1, for example, a fluid regulator installation device 1 according to an embodiment of the present invention is installed in a pipe section on the primary side (upstream side) of a specific area (not shown) in a flow path consisting of an existing fluid pipe 2. To install this fluid regulator installation device 1, first, a cutting device (not shown) is connected to a housing 3 that is hermetically fitted over a pipe section of the fluid pipe 2, and a predetermined section of the fluid pipe 2 inside the housing 3 is cut without interrupting the flow. Next, the cutting device (not shown) is removed, leaving the housing 3, and the fluid regulator installation device 1 is then installed using the housing 3, and a gate valve 4 (see Figures 2 to 5) serving as a fluid regulator is inserted into ends 2H and 2T (see Figures 2 and 4) of the fluid pipe 2 inside the housing 3.

[0019] After installing the check valve 4 inside the housing 3, the fluid control installation device 1 is removed and the upper opening of the housing 3 is closed with the main body lid (not shown), which allows the existing flow path to be opened and closed, and allows operations to be performed to prevent fluid from flowing down into a specific area (not shown) on the secondary side (downstream) of the fluid control installation device 1, making it possible to remove or repair the pipe section in the specific area (not shown).

[0020] The fluid pipe 2 in this embodiment is made of ductile cast iron for use in waterworks, buried underground, and is generally cylindrical in cross section. The inner surface is coated with a mortar layer. The fluid pipe of the present invention may also be made of other metals, such as cast iron or steel, or asbestos, concrete, vinyl chloride, polyethylene, or polyolefin. The inner surface of the fluid pipe may be coated with an epoxy resin layer, mortar, plating, or a suitable material, such as powder coating. While the fluid in the fluid pipe in this embodiment is tap water, it may also be industrial water, agricultural water, sewage, or a gas or a gas-liquid mixture. Furthermore, while the existing fluid pipe 2 is buried underground, the fluid pipe 2 may also be exposed above ground, i.e., installed above ground level, such as in plant piping.

[0021] As shown in FIG. 1 , the fluid pipe 2 and the fluid control device 1 of this embodiment are buried substantially parallel to a sloped road surface G, such as a hill, and are inclined at a predetermined angle (approximately 30 degrees in this example) relative to the horizontal plane. The fluid pipe 2 and the fluid control device 1 may be installed at an incline not only when buried along a sloped surface such as a hill, but also when forming a flow path that flows naturally or on a slope, or when the fluid pipe settles unevenly due to aging after burial, and the inclination angle may be arbitrary. Furthermore, in this embodiment, the fluid pipe 2 is buried at a downward incline from the primary side (upstream side) of the flow path to the secondary side (downstream side). However, the fluid pipe 2 may also be buried at an upward incline from the primary side (upstream side) of the flow path to the secondary side (downstream side).

[0022] [Fluid control installation device] As shown in Figures 1 to 3, the fluid control installation device 1 mainly comprises a case body 10 that is hermetically attached to a predetermined location on the fluid pipe 2, and an insertion machine 190 that inserts the gate valve 4 into the ends 2H, 2T of the fluid pipe 2 inside the case body 10. As described above, the fluid control installation device 1 is attached to the fluid pipe 2 that is inclined relative to the horizontal plane, but for convenience of illustration, in Figures 2 to 6 and 9 to 14, the extension direction of the case body 10 will be described as the up-down direction in the figures.

[0023] [Case body] As shown in Figures 2 and 3, the case body 10 is mainly composed of a housing 3 that is hermetically fitted onto the fluid pipe 2, a fixed flange main body 25 that holds a temporary fixing pin 28 (see Figure 3) that temporarily fixes the check valve 4, a valve box 50a that is hermetically connected to the upper part of the housing 3 and that constitutes an operating valve device 50 as an opening / closing valve described later, a cylindrical member 91 that is hermetically connected to the upper part of the valve box 50a, and a cover member 92 that is hermetically connected to the upper part of the cylindrical member 91.

[0024] As shown in Figures 2 and 3, the housing 3 is mainly composed of a main part 5 formed in a cylindrical shape with an opening at the top, side parts 6, 6 formed in a cylindrical shape protruding from the left and right sides of the main part 5 in directions perpendicular to the axis of the main part 5 and capable of covering the fluid pipe 2, and a bottom part 7 that closes the lower opening of the main part 5.

[0025] The housing 3 is divided into two parts, vertically along the pipe axis of the side portions 6, 6: an upper housing 3a that is generally T-shaped when viewed from the front, and a lower housing 3b that is generally inverted T-shaped when viewed from the front. The lower portion of the fluid pipe 2 is covered by the lower housing 3b, and the upper portion of the fluid pipe 2 is covered by the upper housing 3a. The lower housing 3b and the upper housing 3a are fastened together with a plurality of fastening members N1 (see FIG. 1) consisting of bolts and nuts, thereby hermetically attaching the housing 3 to the fluid pipe 2 so as to cover a predetermined portion of the fluid pipe 2. The ends of the side portions 6, 6 in the pipe axis direction are hermetically fitted over the housing 3, and the housing 3 is fixed to the fluid pipe 2 by anti-detachment fittings 8, 8 (see FIG. 1). The top surface of the main portion 5 is open, and a flange 5a that protrudes outwardly is formed around the periphery of the opening.

[0026] The fixed flange body 25 is formed in an annular shape and is connected to the upper part of the housing 3 in a sealed manner by fastening a plurality of fastening members (not shown) consisting of bolts and nuts to the upper part of the flange 5a. The fixed flange body 25 has radially oriented screw holes 26 (see FIG. 3) formed in a plurality of locations, and a temporary fixing pin 28 is screwed into each screw hole 26 in a sealed manner in the radial direction. The temporary fixing pin 28 can be rotated around its axis from the outside of the fixed flange body 25 with a tool or the like, so that the tip of the temporary fixing pin 28 protrudes into the inside of the main part 5 and can be engaged with the gate valve 4 (described later) (see FIG. 5) or can be retracted into the fixed flange body 25. The tip of the temporary fixing pin 28 is tapered toward the inner diameter.

[0027] 2 and 3, the working valve device 50 has a cylindrical valve box 50a that penetrates vertically, a valve cover 50b that protrudes to the right from the valve box 50a and is connected to the valve box 50a via a communication port 50i (see FIG. 2) formed on the inner peripheral surface, a valve element 50c that is provided so as to be movable substantially horizontally between the valve box 50a and the valve cover 50b, and a recessed groove 50d that serves as a valve seat for receiving the valve element 50c. The valve element 50c can hermetically contact the recessed groove 50d via a seal member.

[0028] The valve box 50a is hermetically connected by fastening a plurality of fastening members (not shown) consisting of bolts and nuts to the upper part of the fixed flange body 25. Furthermore, the end of a valve stem 50h (see FIG. 2) that is threadedly engaged with the valve disc 50c inside the valve cover 50b protrudes from the tip of the valve cover 50b, and an operating handle (not shown) is provided at the end of this valve stem 50h, so that the interior of the housing 3 can be opened and closed by rotating the operating handle (not shown) to move the valve disc 50c between the valve box 50a and the valve cover 50b.

[0029] 2 and 3, the cylindrical member 91 is mainly composed of a main portion 91a formed in a cylindrical shape that is open at the top and bottom, work windows 91b, 91b as openings formed through the main portion 91a at opposing positions in the left-right direction at approximately the center in the up-down direction, and cylindrical side portions 91c, 91c protruding radially outward from the periphery of the work windows 91b, 91b in the main portion 91a. The cover member 92 is mainly composed of a main portion 92a formed in a cylindrical shape that is open at the bottom, and a cover plate portion 92b that closes the upper opening of the main portion 92a.

[0030] The work windows 91b, 91b are openings for performing various tasks by visually checking the condition of the valve hanging fitting 195 and the check valve 4 (described later) housed inside the cylindrical member 91 from outside the cylindrical member 91 or approaching them from the outside, and can be closed with a lid (not shown) when filling the interior with fluid.

[0031] Flanges 91f, 91g protruding in the outer diameter direction are formed on the periphery of each opening at the upper and lower parts of the cylindrical member 91, and by fastening multiple fastening members (not shown) consisting of bolts and nuts attached to the flange 91f at the lower part of the cylindrical member 91 to the upper part of the valve box 50a, the cylindrical member 91 is connected in a sealed manner to the top of the valve box 50a.

[0032] A flange 92f protruding in the outer diameter direction is formed around the periphery of the opening at the bottom of the cover member 92, and by fastening multiple fastening members (not shown) consisting of bolts and nuts attached to this flange 92f to a flange 91g at the top of the cylindrical member 91, the cover member 92 is connected to the top of the cylindrical member 91 in a sealed manner.

[0033] Furthermore, in this embodiment, the valve cover 50b of the working valve device 50 is arranged at a downward incline toward the secondary side (downstream side) of the flow path, but the orientation of the working valve device 50 is not limited to the above, and depending on the situation at the site, for example, the valve cover 50b may be arranged at an upward incline toward the primary side (upstream side) of the flow path, or may be arranged to be approximately perpendicular (forward or backward) to the flow path.

[0034] [Gate valve] As shown in Figures 2 and 3, the check valve 4 is mainly composed of an inner valve box 143 arranged inside the main part 5 of the housing 3, a valve cover 144 connected integrally to the upper part of the inner valve box 143, a valve body 145 provided inside the inner valve box 143 and the valve cover 144, a valve stem 146 for sliding the valve body 145 between the inner valve box 143 and the valve cover 144, and an operating part 147 connected to the valve stem 146 for opening and closing the valve body 145 from the outside.

[0035] The inner valve box 143 has a plate-shaped partition wall portion 141 arranged so as to separate the flow path inside the main portion 5, a disk-shaped inner lid portion 142 arranged approximately horizontally above the partition wall portion 141 and closing the top opening of the main portion 5, and an opening 148 formed by penetrating the partition wall portion 141. A gasket 150 is provided in a groove (not shown) extending from the bottom end surface to the side end surface of the partition wall portion 141, and a gasket 151 is fitted in a groove (not shown) extending circumferentially on the peripheral end surface of the inner lid portion 142. These gaskets 150, 151 are integrally formed so as to be continuous, and extend along the end surface of the gate valve 4.

[0036] The upper end of the valve stem 146 is suspended from the top of the valve cover 144 so as to be rotatable about its axis, and a female thread 152 formed on the top of the valve body 145 is screwed into a male thread formed on the outer circumferential surface. Because the rotation of the valve body 145 around the valve stem 146 is restricted, by rotating the valve stem 146 forward or backward via the operating unit 147, the valve body 145 moves vertically between an open position (position shown by two-dot chain lines in Figures 4 and 5) where it is housed inside the upper valve cover 144 and opens the opening 148, and a closed position (position shown by solid lines in Figures 4 and 5) where it is located inside the lower inner valve body 143 and closes the opening 148.

[0037] [Insertion machine] As shown in Figures 2 and 3, the insertion machine 190 is mainly composed of a drive unit 191 (see Figure 1) attached to the top of the cover member 92, a valve hanging rod 192 inserted into a through-hole 193 formed in the center of the cover member 92 so as to be movable up and down, and a valve hanging fitting 195 connected to the lower end of the valve hanging rod 192. The insertion machine 190 is also capable of changing between a contracted state in which the valve hanging rod 192 is retracted inside the drive unit 191 above the cylindrical member 91, and an extended state in which the valve hanging rod 192 advances inside the cylindrical member 91. By changing the drive unit 191 from the contracted state to the extended state, the gate valve 4 attached to the valve hanging fitting 195 can be inserted into the main part 5 of the housing 3 (see Figures 4 and 5), and by changing the extended state from the contracted state, the gate valve 4 attached to the valve hanging fitting 195 can be pulled up above the operating valve device 50 (see Figures 2 and 3).

[0038] As shown in FIG. 6, the valve hanging fitting 195 has a steel body 201 attached to the lower end of the valve hanging rod 192, and push rods 202, 202 arranged on the left and right sides of the body 201 facing each other.

[0039] The main body 201 is formed in a cylindrical shape with a larger diameter than the valve hanging rod 192, and the upper opening is closed by a disk-shaped flange 203. The lower part is open so that part of the valve cover 144 of the gate valve 4 can be inserted from below. In addition, the main body 201 is formed with notches 208, 208 cut out from the lower end upward so as not to interfere with the installation of the push rods 202, 202.

[0040] Furthermore, a connecting tube 204 protrudes from the center of the upper part of the flange 203, and the lower end of the valve hanging rod 192 is inserted into this connecting tube 204, and a connecting member 205 made of a bolt and nut is inserted radially therethrough, thereby connecting the valve hanging rod 192 to the connecting tube 204. In this way, the valve hanging rod 192 and the cylindrical main body 201 constitute an insertion shaft portion 220 (see FIG. 6) of the present invention.

[0041] In addition, at the front and rear sides of the lower end of the main body 201, mounting pieces 206, 206 which are approximately arc-shaped when viewed from above are formed so as to extend in the outer diameter direction, and the check valve 4 can be attached by screwing a screw member N2 attached from above to mounting holes (not shown) formed in these mounting pieces 206, 206 into screw holes (not shown) formed at the front and rear sides of the valve cover 144.

[0042] Furthermore, vertically extending rib plates 207a-207d are welded to the outer circumferential surface of the main body 201 at four locations on the front left, front right, rear left, and rear right sides so as to protrude outward. These rib plates 207a-207d are arranged at angular intervals of approximately 90 degrees in the circumferential direction. The upper end of each of the rib plates 207a-207d is welded to the flange 203, and the lower end is welded to the mounting pieces 206, 206.

[0043] Of these rib plates 207a to 207d, plate-shaped tilt-supporting jigs 210a and 210b (hereinafter simply referred to as jigs 210a and 210b) serving as supports are fixed to the lower portions of the front right and rear right rib plates 207a and 207b with a plurality of fastening members N4 made of bolts and nuts at approximately the same positions in the insertion direction of the gate valve 4. The jigs 210a and 210b may also be fixed by welding or the like. In this way, the pair of jigs 210a and 210b each extend radially outward from the center of the cylindrical main body 201 and are arranged in a generally V-shape in plan view, as shown in FIG. 7(a).

[0044] As shown in Figures 7(b) to 7(d), the jigs 210a and 210b are formed in the shape of plates of a predetermined thickness made of stainless steel. Furthermore, notches 211 that come into contact with the rib plates 207a and 207b are formed on the inner diameter side, and elongated mounting holes 212 for the fastening members N4 are formed above and below the notches 211 at positions corresponding to the notches 211. The elongated mounting holes 212 extend in the radial direction, allowing the radial mounting positions of the jigs 210a and 210b to be adjusted. The notches 211 are formed on different surfaces of the jigs 210a and 210b. The jigs may be made of steel or other materials instead of stainless steel.

[0045] The jigs 210a and 210b have end faces 213 formed on their outer diameter sides in a vertically elongated rectangular shape. Inclined surfaces 214, 214 that taper toward the outer diameter direction in a plan view are formed on both sides of the end face 213. An inclined surface 215 that slopes downward toward the outer diameter side is formed on the upper part of the end face 213, and an inclined surface 216 that slopes upward toward the outer diameter side is formed on the lower part of the end face 213. As shown in FIG. 7(b), the inclination angle θ1 of the inclined surface 216 relative to the end face 213 is smaller than the inclination angle θ2 of the inclined surface 215 relative to the end face 213 (θ1<θ2). The inclination angles are not limited to those satisfying the relationship θ1<θ2 and may be changed as appropriate.

[0046] Furthermore, as shown in Figure 7(a), at least the end faces 213, 213 of the jigs 210a, 210b are positioned on the outer diameter side of the valve hanging fitting 195, the outer peripheral surface of the inner cover portion 142 of the check valve 4, and the gasket 151, thereby preventing contact between the valve hanging fitting 195, the check valve 4, and the main portion 91a of the case body 10.

[0047] 6(a) and (b), the push rods 202 have male threads formed on their outer peripheries, the upper parts of which are threaded into female threads formed on the inner peripheries of insertion holes 232 (see FIG. 6(a)) formed on the left and right sides of the flange 203, and nuts 231 are threaded into the lower parts of the male threads. In addition, cylindrical connecting parts 233 are protruded from the lower ends of the push rods 202, and the connecting parts 233 are inserted into valve disc holders 234.

[0048] The valve element holders 234, 234 have a plate-like portion 234a arranged on the top of the inner lid portion 142 of the gate valve 4, and a cylindrical portion 234b protruding from the top of the plate-like portion 234a, and holes 235, 235 into which the connecting portions 233, 233 are inserted so as to be rotatable around their axes are formed at the upper ends of the cylindrical portion 234b. Also, a bolt mounting hole (not shown) is formed in the plate-like portion 234a, and the inner lid portion 142 is attached by screwing a screw member N3 attached to the bolt mounting hole from above into a screw hole (not shown) formed in the top of the inner lid portion 142.

[0049] In this way, by rotating the push rods 202, 202 arranged on the left and right sides of the main body 201 around their axes via the operating parts 202a, 202a protruding above the flange 203, the push rods 202, 202 can be pushed downward relative to the flange 203 or pulled upward relative to the flange 203. This makes it possible to adjust the distance between the left and right ends of the flange 203 and the inner cover portion 142 of the gate valve 4. In other words, a slight inclination of the inner cover portion 142 of the gate valve 4 relative to the flange 203 is tolerated, so the left-right inclination of the partition wall portion 141 of the gate valve 4 relative to the valve hanger 195 can be adjusted. After adjustment, by abutting the lower ends of the nuts 231, 231 against the upper ends of the cylindrical portions 234b, internal stress due to the inclination of the gate valve 4 is unlikely to be transmitted to the push rods 202, 202, and the push rods 202, 202 are stably supported.

[0050] [Gate valve installation process] Next, the process of installing the gate valve 4 inside the housing 3 in an uninterrupted flow state using the flow control installation device 1 will be described with reference to FIGS.

[0051] First, a predetermined portion of the fluid pipe 2 is cut using a cutting device (not shown), and the cutting device (not shown) is then removed from above the valve box 50a. After that, a cylindrical member 91 having an insertion device 190 and a cover member 92 are hermetically connected to the top of the valve box 50a, thereby forming the case body 10 (see Figures 8(a) and 9(a)). Inside the cylindrical member 91 and the cover member 92, a valve hanger 195 connected to the tip of a valve hanger rod 192 and a gate valve 4 attached to the valve hanger 195 are housed.

[0052] As shown in Fig. 8(a), the case body 10 is attached so as to be approximately perpendicular to the fluid pipe 2, which is inclined at a predetermined angle (approximately 30 degrees in this example) with respect to the horizontal plane. In other words, the central axis T2 of the case body 10 is approximately perpendicular to the central axis T1 (pipe axis) of the fluid pipe 2, so that the upper part is inclined toward the secondary side (the lower right side of Fig. 8(a)), and the central axis T3 of the side parts 91c, 91c is approximately parallel to the central axis T1 of the fluid pipe 2. Therefore, the work window 91b on the right side (secondary side) in Fig. 8(a) is positioned below the central axis T2.

[0053] On the other hand, the valve hanging rod 192 of the insertion machine 190 is supported by the case body 10 by being inserted into a through-hole 193 of the cover member 92, and the gate valve 4 is attached to the tip via a valve hanging fitting 195. In other words, since the gate valve 4 is supported in a cantilevered state by the case body 10 via the valve hanging rod 192 and the valve hanging fitting 195, the vertically downward gravity generated by the load of the gate valve 4 causes the tip side of the valve hanging rod 192 to sag.

[0054] Here, the end faces 213 (see Figure 7) of the jigs 210a, 210b attached to the main body 201 of the valve hanging fitting 195 abut a portion below the central axis T2 on the inner surface 91h of the main portion 91a of the cylindrical member 91 (see Figures 12(a) and (b)), so that the load of the check valve 4 is supported by the cylindrical member 91, thereby preventing excessive sagging at the tip end of the valve hanging rod 192.

[0055] 11 and 12, the circumferential linear separation dimension L1 between the end faces 213, 213 of the jigs 210a, 210b is longer than the circumferential linear separation dimension L2 between the front and rear ends of the working window 91b (L1>L2), so that the jigs 210a, 210b abut at at least two locations across the working window 91b in the circumferential direction, supporting the valve hanger fitting 195 and the gate valve 4. Furthermore, the jigs 210a, 210b are in approximately the same position in the insertion direction of the gate valve 4 and are arranged in approximately symmetrical positions in the front and rear across the working window 91b, so that the valve hanger fitting 195 and the gate valve 4 can be supported in a circumferentially balanced manner.

[0056] 8(a), with the valve hanging fitting 195 and gate valve 4 housed above the case body 10, it is checked in the circumferential direction whether the outer peripheral surface of the inner lid portion 142 of the gate valve 4 or the packing 151 is in contact with the inner peripheral surface 91h of the main portion 91a, that is, whether a gap exists between the outer peripheral surface of the inner lid portion 142 or the packing 151 and the inner peripheral surface 91h of the main portion 91a (see). If the outer peripheral surface of the inner lid portion 142 or the packing 151 is in contact with the inner peripheral surface 91h of the main portion 91a, the radial attachment positions of the jigs 210a, 210b relative to the rib plates 207a, 207b can be adjusted to change the amount of protrusion of the jigs 210a, 210b relative to the rib plates 207a, 207b.

[0057] Therefore, for example, if due to sagging, the gap between the inner surface 91h below the central axis T2 and the outer surface of the inner lid portion 142 or the gasket 151 is smaller than the gap between the inner surface 91h above the central axis T2 and the outer surface of the inner lid portion 142 or the gasket 151, the size of the gap above and below the central axis T2 can be adjusted to the same size by increasing the amount of protrusion of the jigs 210a, 210b relative to the rib plates 207a, 207b.

[0058] Furthermore, if the gate valve 4 hangs downward from the valve hanging fitting 195, it can be adjusted by rotating the push rods 202, 202 about their axes via the operating parts 202a, 202a as described above.

[0059] Next, a hole (not shown) formed in the housing 3 and a hole (not shown) formed in the cylindrical member 91 are connected with a connecting pipe (not shown) to communicate the inside of the housing 3 with the inside of the cylindrical member 91, the inside of the housing 3 is filled with fluid while air is released from an air release valve (not shown) provided in the lid member 92, and the presence or absence of water leakage is confirmed by applying water pressure inside the cylindrical member 91 and the lid member 92 that is approximately the same as that inside the fluid pipe 2, and then the air release valve (not shown) is closed after confirming that the air inside the cylindrical member 91 and the lid member 92 has been released. Next, with the inside of the housing 3 and the inside of the cylindrical member 91 and the lid member 92 at approximately the same pressure, the valve body 50c is opened, and the insertion machine 190 is operated to lower the gate valve 4 (see FIGS. 8(a) and 9(a)).

[0060] As shown in Figures 8(a) and 9(a), when the gate valve 4 is lowered, the end faces 213, 213 of the jigs 210a, 210b slide toward the housing 3 while abutting against two points on the inner circumferential surface 91h of the main portion 91a. At this time, the trajectories K, K of the jigs 210a, 210b moving on the inner circumferential surface 91h extend toward the housing 3 along the central axis T2. Note that the trajectories K, K are illustrated for convenience of explanation and are not necessarily formed in a visible manner due to sliding contact marks or the like. The end faces 213, 213 of the jigs 210a, 210b are formed in a roughly rectangular shape that is long in the insertion direction of the gate valve 4, i.e., in the vertical direction, and short in the left and right directions. Therefore, resistance due to friction or the like is less likely to occur during insertion and the jigs can move easily. In addition, an inclined surface 216 is formed below the end faces 213, 213 of the jigs 210a, 210b, inclined surfaces 214, 214 are formed on the sides, and an inclined surface 215 is formed above, so that the jigs can move smoothly even if the inner surface 91h is uneven or irregular.

[0061] In particular, the inclination angle θ1 of the inclined surface 216 below the end surface 213 is small, that is, the inclined surface 216 is formed long in the insertion direction, so that it can easily overcome unevenness or irregularities. At least the end surfaces 213, 213 of the jigs 210a, 210b, and more preferably the inclined surfaces 216, 214, 214, and 215, may be subjected to a processing to enhance lubricity, such as a fluororesin processing.

[0062] Next, when the jigs 210a, 210b reach the vicinity of the working window 91b formed below the central axis T2 in the main portion 91a of the cylindrical member 91, as shown in Figures 10 to 12, the jigs 210a, 210b slide toward the housing 3 while abutting against two points on the inner surface 91h so as to straddle the working window 91b in the circumferential direction.

[0063] In other words, even if the work window 91b as an opening is arranged below the central axis T2 in the main part 91a of the cylindrical member 91, as shown in Figures 8(b) and 9(b), the jigs 210a, 210b pass on both sides of the work window 91b in the circumferential direction so that the trajectories K, K do not reach the work window 91b, thereby preventing the jigs 210a, 210b from falling into the work window 91b and preventing the check valve 4 from coming into contact with the inner surface 91h and being damaged.

[0064] 8(b) and 9(b), the gate valve 4 is inserted into the housing 3 and installed at the cut point between the ends 2H and 2T of the fluid pipe 2. At this time, the jigs 210a and 210b do not enter the valve box 50a, so the gate valve 4 does not fall into the communication port 50i with the valve cover 50b (see FIG. 2), preventing it from coming into contact with the inner circumferential surface 91h and being damaged.

[0065] Next, the check valve 4 is installed at the cut point inside the housing 3, and then the multiple temporary fixing pins 28 arranged circumferentially on the fixing flange body 25 (see Figure 5) are advanced toward the inner diameter side of the main part 5 and engaged with the inner cover part 142 from above, thereby restricting the upward movement of the inner cover part 142 and holding it in the specified installation position, thereby preventing the check valve 4 from departing from the housing 3.

[0066] Then, the air vent valve (not shown) provided on the cylindrical member 91 is opened, and it is confirmed that the packings 150, 151 of the gate valve 4 are watertight, and the insertion machine 190 is removed from the valve box 50a together with the cylindrical member 91 and the lid member 92, and then the working valve device 50 is removed from the housing 3. Finally, the main body lid (not shown) is placed on top of the housing 3 from above the inner lid portion 142, and the main part 5 and the main body lid (not shown) are fastened together with a plurality of fastening members (not shown) consisting of bolts and nuts to form a sealed connection, thereby completing the installation of the gate valve 4.

[0067] Furthermore, in this embodiment, when the check valve 4 is installed inside the housing 3 by the fluid control installation device 1, an example is given in which the check valve 4 is supported using a pair of supporting parts, i.e., jigs 210a, 210b. However, when an existing fluid control installed inside the housing 3 is removed from the housing 3 by the fluid control installation device 1, the fluid control can also be supported using a pair of supporting parts, i.e., jigs 210a, 210b.

[0068] In this embodiment, the gate valve 4 as a fluid control valve is installed in the housing 3 in a state where the flow is not interrupted, but the gate valve 4 as a fluid control valve may be installed in the housing 3 in a state where the water supply is cut off. Furthermore, the jigs 210a, 210b as a pair of support parts do not have to be in constant contact with the inner circumferential surface 91h, and may be in a close proximity at other times as long as they are in contact with the inner circumferential surface 91h at least when a load is applied.

[0069] [Actions and Effects] As described above, the fluid control installation device 1 as an embodiment of the present invention comprises a case body 10 that is attached to the fluid pipe 2 in a sealed manner, and an insertion machine 190 as an insertion device that inserts a check valve 4 as a fluid control valve into the cut portion of the fluid pipe 2 inside the case body 10 (between the ends 2H and 2T).The case body 10 has a main part 91a as a barrel part that guides the check valve 4 at a downward slope toward the cut portion of the fluid pipe 2, and an operation window 91b as an opening is formed below the central axis T2 of the main part 91a.The insertion machine 190 comprises a valve hanging fitting 195 as an insertion shaft part to which the check valve 4 is attached, and jigs 210a, 210b as a pair of support parts that are provided on the main body 201 and abut at at least two points on the inner surface 91h below the central axis T2 of the main part 91a to support the check valve 4, and the jigs 210a, 210b are arranged so as to straddle the operation window 91b.

[0070] According to this, even if the load causes the check valve 4 to sag vertically downward when inserted, the pair of jigs 210a, 210b abut at two points on the inner surface 91h of the main part 91a, thereby stably supporting the main body 201 and moving across the work window 91b without falling, so that the check valve 4 can be installed in the correct position without being damaged by contact.

[0071] In addition, since the pair of jigs 210a, 210b are arranged so as to straddle the working window 91b in the circumferential direction, the pair of jigs 210a, 210b can pass through both sides of the working window 91b when inserting the check valve 4, making it possible to insert the jigs 210a, 210b further in to support the valve hanging fitting 195.

[0072] Furthermore, since the pair of jigs 210a, 210b are positioned at approximately the same position in the insertion direction of the check valve 4, the valve hanging fitting 195 is supported at approximately the same position in the insertion direction, further improving stability, and the valve hanging fitting 195 and check valve 4 can be supported in a circumferentially balanced manner.

[0073] Furthermore, the main part 91a of the case body 10 is formed in an approximately cylindrical shape, and the pair of jigs 210a, 210b extend radially from the main part 91a, so that the pair of jigs 210a, 210b extending radially from the main part 91a can be abutted approximately perpendicularly against the inner surface 91h of the approximately cylindrical main part 91a, thereby stably supporting the check valve 4 and preventing circumferential displacement.

[0074] Furthermore, since at least the end faces 213, 213 of the pair of jigs 210a, 210b are positioned on the outer diameter side of the valve hanging fitting 195 and the check valve 4, it becomes easier to prevent contact between the valve hanging fitting 195 and the check valve 4 and the main part 91a of the case body 10.

[0075] In addition, the pair of support portions are provided on jigs 210a, 210b as extension members extended from the valve hanging fitting 195 along the insertion direction (central axis T2) of the check valve 4, and since the jigs 210a, 210b are extended in the insertion direction, the check valve 4 can be stably supported.

[0076] In addition, the case body 10 has a working valve device 50 as an opening / closing valve on the fluid pipe 2 side of the main part 91a, and the pair of jigs 210a, 210b are arranged in a position where they will not reach the working valve device 50 when the check valve 4 is inserted up to the cutting point of the fluid pipe 2. This prevents the trajectories K, K of the movement of the jigs 210a, 210b from being left on the valve box 50a, etc., which would affect the opening / closing or sealing properties of the working valve device 50, or the jigs 210a, 210b from falling into the communication port 50i and causing sagging.

[0077] In addition, the pair of jigs 210a, 210b are arranged in an approximately V-shape when the case body 10 is viewed from the direction of the central axis T2, and the pair of jigs 210a, 210b abut approximately perpendicularly against the lower inner surface 91h, thereby preventing not only sagging of the check valve 4 but also circumferential displacement.

[0078] In addition, the valve hanging fitting 195 has a main body 201 as a cylindrical member to which the check valve 4 is attached, and reinforcing rib plates 207a, 207b extending in the insertion direction are protruded toward the outer diameter at multiple locations on the outer surface of the main body 201, and by fixing the jigs 210a, 210b to the rib plates 207a, 207b, the jigs 210a, 210b can be fixed to the strong rib plates 207a, 207b, thereby improving stability.

[0079] Furthermore, as shown in Figure 12(a), the valve hanging fitting 195 supports the check valve 4 at at least four circumferential points using front and rear screw members N2 and left and right push rods 202, 202, thereby preventing the check valve 4 from sagging due to downward gravity caused by the load.

[0080] Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments, and the present invention also includes modifications and additions that do not deviate from the gist of the present invention.

[0081] For example, in the above embodiment, an example of a support part for supporting the fluid control is given in which jigs 210a, 210b formed separately from the main body 201 of the valve hanging fitting 195 as an insertion shaft part are used, but the present invention is not limited to this, and for example, support parts 310a, 310b may be formed integrally with the main body 301 of the valve hanging fitting 395 to which the check valve 304 is attached as a modified example shown in Figures 13 to 15.

[0082] A gate valve 304 and a valve hanger 395 as a modified example will be described below with reference to Figures 13 to 15. Note that the same components and parts of the gate valve 304 and the valve hanger 395 as those in the above embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

[0083] 13 to 15, main body 301 extends in the left-right direction in a plan view and has plate-like portion 301a with connecting tube 204 protruding from the upper center position in the left-right direction, and push rods 202, 202 are screwed into the left and right ends of plate-like portion 301a. In addition, hanging pieces 301b, 301b hang down downward from the front and rear sides of the left-right center position of plate-like portion 301a, and screw members N2, N2 attached to the lower ends of these pieces are screwed into screw holes (not shown) formed in flange 142a of gate valve 304, thereby attaching gate valve 304.

[0084] Support portions 310a and 310b extend in the front-rear direction on the right side of plate-like portion 301a. End faces 313 of support portions 310a and 310b have a horizontally elongated rectangular shape and extend in the circumferential direction, with inclined faces 314 formed above and below the end faces 313 in the outer diameter direction. End faces 313 of support portions 310a and 310b are curved in the circumferential direction relative to inner circumferential surface 91h of main portion 91a.

[0085] 14 and 15, the circumferential linear separation dimension L3 between the end faces 313, 313 of the supports 310a, 310b is longer than the circumferential linear separation dimension L2 between the front and rear ends of the working window 91b (L3>L2), so that the supports 310a, 310b abut at at least two locations across the working window 91b in the circumferential direction to support the gate valve 4. Furthermore, the supports 310a, 310b are located at approximately the same position in the insertion direction of the gate valve 304 and are arranged at approximately symmetrical positions in the front and rear across the working window 91b, so that the valve hanging fitting 395 and the gate valve 304 can be supported in a circumferentially balanced manner.

[0086] In the left case, as shown in Fig. 15, when the support portions 310a, 310b straddle the access window 91b in the circumferential direction, a portion of the end faces 313, 313 on the push rod 202 side enters the access window 91b, but the other area abuts against the inner circumferential surface 91h of the main portion 91a, so the end faces 313, 313 do not fall into the access window 91b. In other words, as shown in Fig. 14, a portion of the trajectory K, K of the support portions 310a, 310b passing over the inner circumferential surface 91h may come into contact with the access window 91b. Even with the support portions 310a, 310b as such a modified example, the same functions and effects as the jigs 210a, 210b of the above-described embodiment can be achieved.

[0087] Furthermore, in the above-described embodiment, a pair of jigs 210a, 210b and support portions 310a, 310b are illustrated as being in approximately the same position in the insertion direction of the gate valve 4, 304, and are positioned in approximately symmetrical positions in the front and rear with the access window 91b in between, but the present invention is not limited to this. For example, as in the modified valve hanger fitting 195A shown in Figure 16(a), a pair of jigs 410a, 410b (support portions) may be positioned above and below the valve hanger fitting 195A, that is, in different positions in the insertion direction of the fluid control valve (not shown), thereby achieving balanced support for the valve hanger fitting 195A in the insertion direction. In this case, the pair of jigs 410a, 410b are positioned so as to straddle the access window 91b in the circumferential direction.

[0088] Furthermore, in the above embodiment, a form was exemplified in which a pair of jigs 210a, 210b and support parts 310a, 310b are arranged so that they can pass through the work window 91b when inserting the check valve 4, 304, but the present invention is not limited to this, and as long as the jig 410a (support part) of the modified valve hanging fitting 195A shown in Figure 16(a) is designed to move to the side of the work window 91b (opening) when inserting a fluid control valve (not shown) into the inside of the housing, it does not necessarily have to pass through the work window 91b (opening).

[0089] Furthermore, as shown in FIG. 16(b), the jigs 510a and 510b (supporting portions) of the modified valve hanger fitting 195B do not necessarily need to be positioned so as to straddle the access window 91b (opening) in the circumferential direction, as long as they are positioned so as to straddle the access window 91b (opening) when inserting the fluid regulator (not shown) into the housing. In this case, the jig 510a does not reach the access window 91b (opening) when inserting the fluid regulator (not shown) into the housing, and therefore does not move to the side of the access window 91b. Furthermore, in the valve hanger fitting 195B, by positioning the pair of jigs 510a and 510b (supporting portions) at different positions above and below the valve hanger fitting 195B, i.e., at different positions in the insertion direction of the fluid regulator (not shown), the valve hanger fitting 195B can be supported in a balanced manner in the insertion direction.

[0090] In the above-described embodiment, a pair of jigs 210a, 210b and a pair of support portions 310a, 310b are used as examples of support portions. However, the present invention is not limited to this. As long as a pair of support portions abutting and supporting at least two points on the inner surface across the opening, support portions capable of supporting at three or more points in the circumferential direction may be used. For example, as shown in FIG. 16(c), a modified valve hanging fitting 195C may have a pair of jigs 610a, 610b abutting at two points on the inner surface 91h across the access window 91b (opening), and may further include a separate jig 610c. In this case, when a fluid regulator (not shown) is inserted into the housing and installation is completed, the jig 610c does not need to reach the access window 91b (opening). Furthermore, multiple support portions capable of supporting at two or more points in the insertion direction of the fluid regulator may be used.

[0091] In addition, in the above embodiment, the pair of jigs 210a, 210b and the pair of support parts 310a, 310b as an example of support parts are exemplified as being arranged at angular intervals of approximately 90 degrees in the circumferential direction, but the present invention is not limited to this, and they may be arranged at various angular intervals of less than approximately 180 degrees in the circumferential direction as long as they can straddle the opening.

[0092] In the above embodiment, the valve hanging rod 192 and the valve hanging fittings 195, 395 are used as an example of the insertion shaft, and the jigs 210a, 210b are provided on the valve hanging fittings 195, 395 as support parts. However, the present invention is not limited to this, and the shape and configuration of the insertion shaft are arbitrary, and the valve hanging rod 192 and the valve hanging fittings 195, 395 may be formed integrally. Furthermore, the support part may be disposed on the valve hanging rod 192.

[0093] In the above embodiment, the working window 91b is used as an example of the opening, but the present invention is not limited to this, and the opening may be, for example, a communication port 50i formed in the valve box 50a of the working valve device 50, or an opening formed for other purposes such as an inspection window or a drain port. In addition, the opening is not limited to a through hole, and may include a recess or the like.

[0094] In the above embodiment, the working window 91b as an opening is formed with its center positioned on the central axis T3 parallel to the central axis T1 of the fluid pipe 2, but the present invention is not limited to this, and the working window 91b may be formed with its center positioned at a position shifted in the axial or circumferential direction from the central axis T3 as long as it is below the central axis T2 of the main portion 91a. In addition, a plurality of openings may be formed below the central axis T2 of the main portion 91a.

[0095] In the above embodiment, the case body 10 is mainly composed of the housing 3, the fixed flange main body 25, the valve box 50a, the cylindrical member 91, and the cover member 92. However, the present invention is not limited to this, and at least two or all of the multiple members may be integrated. Furthermore, the case body 10 does not necessarily have to have the valve box 50a of the working valve device 50.

[0096] Furthermore, in the above embodiment, a gate valve 4 is used as an example of a fluid control valve capable of controlling the flow of a fluid, but the present invention is not limited to this, and the fluid control valve may be a valve element such as a stop valve, a switching valve, or a butterfly valve that can open and close a flow path. Also, the gate valve may not have a valve element 145 or the like that can switch the flow path in the partition wall portion. Also, the partition wall portion is not limited to being flat, and may be curved. [Explanation of symbols]

[0097] 1 Fluid control installation device 2 Fluid tube 2H,2T end 3 Housing (case body) 4. Gate valve (fluid control) 10 Case body 25 Fixed flange body (case body) 50 Working valve device (on-off valve) 50a Valve box (case body) 91 Cylindrical member (case body) 91a Main part (torso) 91b Work window (opening) 91h Inner peripheral surface (inner surface) 92 Lid member (case body) 92a Main part (body) 143 Inner box 144 Operculum 145 Valve body 150,151 Packing 190 Insertion machine (insertion device) 192 Valve hanging rod 193 Through Hole 195 Valve hanging fittings 201 Main Unit 202 Push rod 204 Connecting tube 207a~207d Rib board 210a, 210b Tilt support jig (support part) 213 End face 214~216 Slope 220 Insertion shaft 234 Valve holder 301 Main Unit 304 Gate valve (fluid control) 310a,310b Support part 313 End face 314 Slope 395 Valve Hanging Fittings 195A~195C Valve Hanging Fittings 410a, 410b Jig (support part) 510a, 510b Jig (support part) 610a, 610b Jig (support part)

Claims

1. A fluid control installation device having a case body that is attached to a fluid pipe in a sealed manner, and an insertion device that inserts a fluid control device into a cut portion of the fluid pipe inside the case body, The case body has a body portion that guides the fluid control device downwardly toward the cut portion of the fluid pipe, and an opening is formed below the central axis of the body portion, The insertion device has an insertion shaft portion to which the fluid control device is attached, and a pair of support portions provided on the insertion shaft portion and abutting at least two points on the inner surface below the central axis of the body portion to support the fluid control device, and the pair of support portions are arranged so as to straddle the opening.

2. The fluid control installation device according to claim 1 , wherein the pair of support portions are arranged so as to straddle the opening in the circumferential direction.

3. 2. The fluid regulator installation device according to claim 1, wherein the pair of support portions are arranged at substantially the same position in the insertion direction of the fluid regulator.

4. 2. The fluid regulator installation device according to claim 1, wherein the pair of support portions are arranged at different positions in the insertion direction of the fluid regulator.

5. 2. The fluid control installation device according to claim 1, wherein the body of the case body is formed in a substantially cylindrical shape, and the pair of support portions extend in a radial direction of the body.

6. 2. The fluid control installation device according to claim 1, wherein the pair of support portions are disposed radially outward of the insertion shaft portion.

7. 2. The fluid control device according to claim 1, wherein the pair of support portions are provided on an extension member that extends from the insertion shaft portion along the insertion direction of the fluid control device.

8. the case body has an on-off valve on the fluid pipe side of the body portion, 2. The fluid control installation device according to claim 1, wherein the pair of support portions are provided at positions where the fluid control does not reach the on-off valve when the fluid control is inserted up to the cut portion of the fluid pipe.

Images