JP5256016B2 - Desorption device for pipe connecting member - Google Patents

Description

  The present invention is inserted into the first insertion hole formed in the flange of the communication pipe communicating with the existing fluid pipe, and the second insertion hole formed in the flange of the pipe connection member connected to the communication pipe. The existing bolts are removed, the opposing surfaces of the pair of flanges are separated, the valve body is inserted to seal the communication pipe, and a closing member that closes the communication pipe is disposed in the communication pipe. The present invention relates to a desorption device for a pipe connecting member for desorption.

    Conventionally, when a pipe connection member such as an air valve or a repair valve connected to a communication pipe of an existing fluid pipe via a flange or the like is detached from the existing fluid pipe for replacement or maintenance, the existing fluid pipe In order to remove the pipe connection member while maintaining the uninterrupted flow state, the communication pipe and the pipe connection member are covered in a watertight manner by an attachment member provided with a valve body, and the valve body is inserted between the communication pipe and the pipe connection member. In order to stop the water on the communication pipe, the existing pipe connection member can be removed and replaced with a new pipe connection member.

  This type of communication pipe and pipe connection member are connected by bolts and nuts inserted into the insertion hole formed in the flange of the communication pipe and the insertion hole formed in the flange of the pipe connection member. In order to prevent water leakage from the insertion hole of the communication pipe and the insertion hole of the pipe connection member in the replacement of the member, before inserting the valve body between the communication pipe and the pipe connection member, A leakage prevention member comprising a work bolt and nut having an annular packing for sealing and a washer made of a metal washer that covers the outer surface of the packing, and a nut in which the packing is accommodated in the collar portion By exchanging, the flange portion and the nut come into contact with the flange of the communication pipe and the flange of the pipe connection member, respectively, and prevent leakage of water from the insertion hole of the communication pipe and the insertion hole of the pipe connection member (for example, Patent text Reference 1).

JP 2008-51231 A (6th page, FIG. 16)

  In the attachment / detachment device described in Patent Document 1, when the leakage prevention member is attached in place of the existing bolt, for example, when a main body excluding a flange such as a repair valve as a pipe connection member bulges in the radial direction, etc. In some cases, the leakage preventing member may interfere with the main body of the pipe connecting member.

  The present invention has been made paying attention to such problems, and an object of the present invention is to provide a desorption device for a pipe connection member in which the leakage preventing member can be disposed in the insertion hole without interfering with the pipe connection member. .

In order to solve the above-described problem, a pipe connecting member detaching device according to claim 1 of the present invention is provided.
Existing bolt inserted into the first insertion hole formed in the flange of the communication pipe communicating with the existing fluid pipe, and the second insertion hole formed in the flange of the pipe connection member connected to the communication pipe Removing the valve, separating the opposing surfaces of the pair of flanges, inserting a valve body to seal the communication pipe, and disposing a closing member closing the communication pipe in the communication pipe, A desorption device for a pipe connecting member for desorption,
A mounting member that is sealed and capable of forming a gap between the opposing surfaces of the pair of flanges, and that accommodates the valve body therein;
A first leakage preventing member for sealing the first insertion hole instead of the existing bolt;
A second leakage preventing member supported by the mounting member and sealing the second insertion hole in place of the existing bolt;
A fixing portion for fixing the mounting member to the flange of the pipe connecting member is provided on the peripheral wall portion of the mounting member,
The peripheral wall is formed with an opening through which the second leakage preventing member is inserted toward the second insertion hole.
According to this feature, the opening is formed in the peripheral wall portion of the mounting member, and the second leakage prevention member is inserted into the opening toward the second insertion hole through the second leakage prevention member. Since there is no need to extend the member to the pipe connecting member side with respect to the peripheral wall portion, the second leakage preventing member supported by the mounting member is arranged toward the second insertion hole without interfering with the pipe connecting member. In addition, the second leakage preventing member inserted through the opening can be moved along the inside of the opening to securely seal the second insertion hole. In addition, since the attachment member is fixed to the pipe connection member by the fixing portion provided on the peripheral wall portion and moves relative to the communication pipe together with the pipe connection member, the second leakage in which the second insertion hole is sealed The prevention member has no change in the relative position with the mounting member that supports the second leakage prevention member, can maintain the sealed state of the second insertion hole, and reliably prevents leakage from the second insertion hole. be able to.

The pipe connecting member detaching apparatus according to claim 2 of the present invention is the pipe connecting member detaching apparatus according to claim 1,
The second leakage prevention member is provided on the outer peripheral side of the peripheral wall portion, a fitting portion that fits into the second insertion hole, a pressing portion that is inserted into the opening portion and presses the fitting portion. And an operating portion for operating the pressing portion.
According to this feature, the second leakage preventing member is fitted to the second insertion hole, the pressing portion that is inserted through the opening and presses the fitting portion, and the outer peripheral side of the peripheral wall portion. And an operating portion that operates the pressing portion. Therefore, the pressing portion can be fitted to the second insertion hole only by operating the operating portion on the outer peripheral side of the peripheral wall portion that does not interfere with the pipe connecting member. By pressing, the second insertion hole can be sealed.

The pipe connecting member detaching device according to claim 3 of the present invention is the pipe connecting member detaching device according to claim 1 or 2,
The first leakage preventing member is supported on an outer peripheral surface of the communication pipe.
According to this feature, since the first leakage prevention member that seals the first insertion hole formed in the flange of the communication pipe is supported by the outer peripheral surface of the communication pipe, the gap between the opposing surfaces of the pair of flanges When the gap is formed, even if both flanges move relative to each other, there is no change in the relative position between the first leakage prevention member and the outer peripheral surface of the communication pipe that supports the first leakage prevention member. The leakage preventing member can maintain the state where the first insertion hole is sealed, and leakage from the first insertion hole can be reliably prevented.

A desorption device for a pipe connection member according to claim 4 of the present invention is the desorption device for a pipe connection member according to any one of claims 1 to 3,
The mounting member has a movement restricting portion that restricts relative movement between the opposing surfaces of the pair of flanges to a gap length into which the valve body can be inserted.
According to this feature, when the valve body is inserted by forming a gap between the opposing surfaces of the flanges, even if the existing bolts attached to the insertion holes are removed, the movement restricting portion causes the clearance between the opposing surfaces of the pair of flanges. In order to restrict the relative movement to the length of the gap where the valve body can be inserted, when the existing bolt is removed or when a gap where the valve body can be inserted is formed between the opposing faces of the flange, the fluid in the existing fluid pipe The possibility that the pipe connecting member is detached due to the pressure can be eliminated, and leakage from between the opposing surfaces of the pair of flanges can be prevented.

A desorption device for a pipe connection member according to claim 5 of the present invention is the desorption device for a pipe connection member according to any one of claims 1 to 4,
The first leakage prevention member includes at least a fitting portion that fits into the first insertion hole, and the second leakage prevention member includes at least a fitting portion that fits into the second insertion hole. ,
One of the fitting parts has a short neck lower part in which a gap is formed on the opposing surface side of the pair of flanges in the insertion hole into which the one fitting part is fitted,
The other fitting portion has a long neck lower portion that passes through the insertion hole into which the other fitting portion is fitted and is inserted through the gap.
According to this feature, one fitting portion has a short neck lower portion in which a gap is formed in the fitting insertion hole, and the other fitting portion passes through the fitting insertion hole and further has a gap. When the pair of flanges are separated from each other, the pair of flanges are guided by the long neck lower part and the pair of flanges can be prevented from being displaced.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out a pipe connecting member detaching apparatus according to the present invention will be described below based on examples.

  An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 is a front view showing a state in which an air valve and a repair valve as a pipe connecting member according to the present invention are attached to a communication pipe. FIG. 2 is a front view showing a state in which the attachment member is attached to the flange. 3A is a top view of the mounting member, FIG. 3B is a bottom view of the same, and FIG. 3C is a cross-sectional view taken along line XX in FIG. FIG. 4 is a front view showing a state in which members constituting the pipe connecting member moving tool are attached to the communication pipe. 5A is a bottom view showing the support member, FIG. 5B is a front view of the same, FIG. 5C is a top view showing the first support portion, and FIG. It is a front view. 6A is a YY sectional view of FIG. 4, and FIG. 6B is a ZZ sectional view of FIG. FIG. 7A is an enlarged cross-sectional view of FIG. 4, and FIG. 7B is a cross-sectional view taken along line AA of FIG. 8A is a cross-sectional view taken along line BB in FIG. 6A, and FIG. 8B is a cross-sectional view illustrating a state in which the leakage preventing member seals the insertion hole from the state of FIG. Fig.9 (a) is a top view which shows a moving member, (b) is a front view similarly, (c) is WW sectional drawing of FIG. FIG. 10 is a partial cross-sectional view illustrating a state in which the flanges are separated from each other and the valve body is inserted between the opposing surfaces of the flange. FIG. 11 is a partial cross-sectional view showing a state where the pressing member presses the flange of the pipe connecting member from the state of FIG. 12A is a top view showing the pressing member, FIG. 12B is a front view of the same, and FIG. 12C is a cross-sectional view taken along the line V-V in FIG. 11. FIG. 13 is a partial cross-sectional view showing a state where the air valve and the moving member are removed from the state of FIG. FIG. 14 is a partial cross-sectional view showing a state in which the closing device is attached. FIG. 15 is a partial cross-sectional view showing a state in which the closing member is inserted into the communication pipe and sealed. FIG. 16 is a partial cross-sectional view showing a state where the mounting member and the pressing member are removed. FIG. 17 is a partial cross-sectional view showing a state where the repair valve and the storage case are removed. FIG. 18 is a partial cross-sectional view showing a state where a new repair valve and a storage case are attached. FIG. 19 is a front view showing a state in which the air valve is newly attached. In the following, the top, bottom, left, and right sides of FIG. 1 are the top, bottom, left, and right sides of the pipe connecting member detaching apparatus, the front side of the paper is the front side (front side) of the pipe connecting member detaching apparatus, The side (back side) will be described.

  As shown in FIG. 1, the longitudinal direction of the existing fluid pipe P is used to discharge the air in the pipe of the existing fluid pipe P as a water transport pipe to the outside of the pipe or to prevent negative pressure in the pipe. Is provided with an air valve AV1 as a pipe connecting member at each predetermined position, and the air valve AV1 is connected to a communication pipe B provided in the existing fluid pipe P and excludes a flange that bulges in the radial direction. It is attached via a repair valve FP as a pipe connecting member that is provided with a valve body in the part and that opens and closes the flow from the communication pipe B. A bolt 68 is attached to the flange F4 of the air valve AV1 and the flange F3 of the repair valve FP, and a nut 69 is fastened to the bolt 68, whereby the air valve AV1 is connected to the repair valve FP.

  As for the connection between the communication pipe B and the repair valve FP, a plurality of first insertion holes Fa formed in the flange F1 provided in the communication pipe B and a plurality of flanges F2 provided in the repair valve FP are provided. The existing bolts 18 are respectively inserted integrally into the two insertion holes Fb, and are connected by fastening the existing bolts 18 and the nuts 19.

  Further, instead of the above-described repair valve, a short pipe as a pipe connecting member is attached to the flange F1 of the communication pipe B of the existing fluid pipe P, and an air valve is attached to the upper end of the short pipe via the flange. Sometimes it is. Even if the repair valve FP is provided as shown in FIG. 1, the repair valve FP itself is defective due to failure or the like, and needs to be replaced, or the air valve attached to the short pipe instead of the repair valve FP is damaged. When water stoppage is poor and replacement is required, the pipe connecting member is attached to the flange F1 of the communication pipe B and the flange F2 of the pipe connecting member, and the pipe connecting member is detached.

  As shown in FIG. 4, FIG. 11 and FIG. 14, the detaching device is mainly attached in a sealed manner so that a gap can be formed between the opposing surfaces S and T of the pair of flanges F1 and F2, and a valve is provided inside. The mounting member 3 that accommodates the body 2a, the first bolt 18 instead of the existing bolt 18, the first leakage prevention member 21 that seals the first insertion hole Fa, and the second insertion hole Fb that is sealed instead of the existing bolt 18. A second leakage preventing member 22 that performs, a pipe connecting member moving tool 6 that moves the repair valve FP relative to the communication pipe B, and a closing member 13 that closes the communication pipe B by being disposed in the communication pipe B described later. And a closure device 11 provided.

  As shown in FIGS. 3A to 3C, the mounting member 3 includes a valve body 2 a, a valve housing portion 2 that houses the valve body 2 a, and one divided portion that is connected to the valve housing portion 2. The flange housing portion 5 is configured to be sandwiched between the flange F1 and the flange F2 in the circumferential direction and connected with the mounting bolts and nuts 4 so as to be installed. (See FIGS. 6A and 6B).

  The valve accommodating portion 2 mainly includes a rectangular portion 2e that accommodates the valve body 2a. The valve body 2a is operated by pushing and pulling the valve shaft 2c so as to stop water at the facing surface S of the flange F1 of the communication pipe B. It is possible to advance and retreat (see FIG. 10).

  The flange accommodating portion 5 is connected to the rectangular portion 2e, and an arc-shaped portion 24 having an inner diameter slightly larger than the outer diameter of the flange F1 and a circle having an inner diameter slightly larger than the outer diameter of the flange F1 like the arc-shaped portion 24. The arc-shaped portions 23 and 24 are provided with hooking portions 23b and 24b provided with bolt holes through which the mounting bolts and nuts 4 are inserted.

  Swelling portions 23 a and 24 a that bulge toward the inner diameter direction of the flange housing portion 5 are formed at the center of the inner wall surfaces of the arc-shaped portions 23 and 24. The bulging portions 23a and 24a have a relatively thin thickness that can be inserted between the opposing surfaces S and T on the outer peripheral side of the connected flanges F1 and F2, and the upper surfaces of the bulging portions 23a and 24a. However, the valve housing part 2 and the flange housing part 5 are attached to the flanges F1 and F2 in contact with the lower surface of the flange F2 formed in the outer diameter direction of the facing surface T (FIG. 7A). (See (b)).

  In addition, a bolt hole is formed along the circumferential direction in the peripheral wall portions 23h and 24h of the arc-shaped portions 23 and 24 at the upper position of the flange F2 so as to penetrate in the inner diameter direction and into which a bolt 30 as a fixing portion is screwed. The valve accommodating portion 2 and the flange accommodating portion 5 are attached to the flanges F1 and F2, with the flange 30 being clamped by the bolt 30 and the upper surfaces of the bulging portions 23a and 24a so as to be always regulated. That is, the flange accommodating portion 5 constituting the attachment member 3 is fixedly attached to the flange F2 of the repair valve FP (see FIGS. 7A and 7B).

  The water-stop members 23c and 24c and the water-stop members 23d made of an elastic material fitted in respective fitting grooves formed over the inner wall portions are provided on the upper and lower portions of the inner wall portions of the arc-shaped portions 23 and 24, respectively. 24d is disposed.

  Further, the arc-shaped portions 23, 24 are formed with lower collar portions 23f, 24f extending from the lower ends thereof toward the arc-shaped portions 24, 23, and the lower collar portions 23f, 24f are moved. A plurality of bolts 26 as restricting portions are respectively screwed together. After the valve housing portion 2 and the flange housing portion 5 are attached to the flanges F1 and F2 by the mounting bolts and nuts 4, the bolt 26 and the bolt 30 described above are screwed into the flanges F2 and F1, respectively. Thus, the bolt 26 and the flange F2 sandwich the flange F1 in the vertical direction, that is, the axial direction of the communication pipe B, and regulate the relative movement of the pair of flanges F1 and F2 (see FIG. 7B). ). As will be described later, the bolt 26 is adjusted so that the gap formed between the opposing surfaces of the flanges F1 and F2 is regulated to a gap length into which the valve body 2a can be inserted by adjusting the degree of screwing. It has become.

  Furthermore, the peripheral wall portions 23h and 24h of the arc-shaped portions 23 and 24 different from the places where the bolts 30 are disposed are formed by cutting out the upper end surfaces of the peripheral wall portions 23h and 24h into a concave groove shape, which will be described later. A plurality of insertion grooves 23k and 24k as openings through which the pressing portion 33 of the leakage preventing member 22 is inserted toward the second insertion hole Fb are formed along the circumferential direction. Further, projecting portions 23m and 24m projecting in the outer diameter direction are formed on the outer peripheral surfaces of the peripheral wall portions 23h and 24h in the upper portions of the arc-shaped portions 23 and 24, respectively.

  As shown in FIGS. 6A and 8B, the second leakage preventing member 22 includes a second fitting portion 34 that fits into the second insertion hole Fb, and the second fitting. A pressing portion 33 that is provided independently of the joint portion 34 and is inserted into the insertion grooves 23k and 24k and presses the second fitting portion 34, and is provided on the outer peripheral side of the peripheral wall portions 23h and 24h. And a bolt 29 as an operation unit to be operated.

  The pressing portion 33 is formed of a plate-like member, and a bolt hole for screwing a bolt 29 for integrally attaching the protruding portion 23m and 24m to the pressing portion 33 is formed at one end thereof. Is inserted through the insertion grooves 23k and 24k, and is fixed to the projecting portions 23m and 24m with bolts 29, so that the pressing portion 33 is detachably supported with respect to the arc-shaped portions 23 and 24. It has become.

  As shown in FIGS. 8A and 8B, the second fitting portion 34 protrudes in the axial direction of the bulging portion 34a bulging in the radial direction and the second insertion hole Fb, which will be described later. The first fitting portion 32 includes a neck lower portion 34b that is shorter than the neck lower portion 32b. The neck lower portion 34b is inserted into the second insertion hole Fb and a bulging portion 34a bulging in the radial direction is provided. Contact with the upper surface of the flange F2, and the second fitting portion 34 is fitted into the second insertion hole Fb, thereby preventing leakage from the second insertion hole Fb. More specifically, the waterproof ring provided over the circumferential direction below the bulging portion 34a contacts the upper surface of the flange F2 in a watertight manner, thereby preventing leakage.

  Further, the vertical dimension of the second fitting portion 34 shown in the figure is such that the tip of the neck lower portion 34b of the second fitting portion 34 in a state where the second fitting portion 34 is fitted into the second insertion hole Fb. Is a dimension located at a position slightly higher than the substantially central height position of the second insertion hole Fb. That is, in the state where the second fitting portion 34 is fitted in the second insertion hole Fb, a gap K is formed in the lower portion in the second insertion hole Fb.

  As shown in FIGS. 5C, 5D, and 8B, the first leakage prevention member 21 is supported by a relative movement that is regulated with respect to the outer peripheral surface of the communication pipe B described later. A first support portion 31 fixedly attached to the support member 41 (see FIG. 4) of the connection member moving tool 6, provided independently of the first support portion 31, and fitted into the first insertion hole Fa. And a first fitting portion 32.

  As shown in FIGS. 5C and 5D, the first support portion 31 is fixedly attached to the support member 41 so as to be supported on the outer peripheral surface of the communication pipe B, and the support piece 31 a is supported. Bolts 31 b and 31 b that are screwed into bolt holes formed in the upper piece 31 c of the piece 31 a and press the first fitting portion, and a plurality of bolts 31 b and 31 b are arranged along the outer periphery of the support member 41. (See FIG. 6B).

  Further, an insertion hole 31e through which a bolt 49 for fixing the first support portion 31 to the support member 41 is inserted is formed in the lower piece 31d of the support piece 31a extending downward to the upper piece 31c. Then, the bolt 49 is inserted into the insertion hole 31e, and the bolt 49 is screwed into the bolt hole 41a (see FIG. 5B) formed in the support member 41, whereby the first support portion 31 is engaged with the support member 41. It comes to be supported. That is, since the first support portion 31 is fixedly attached to the support member 41 supported by the relative movement of the outer peripheral surface of the communication pipe B, the first support portion 31 is provided with the support member 41. And fixedly supported on the outer peripheral surface of the communication pipe B (see FIG. 4).

  As shown in FIG. 8B, the first fitting portion 32 protrudes in the axial direction of the bulging portion 32 a bulging in the radial direction and the first insertion hole Fa, and the second fitting portion 34. The neck lower part 32b is longer than the neck lower part 34b, the neck lower part 32b is inserted into the first insertion hole Fa, and the tip of the neck lower part 32b penetrates the insertion hole Fa and has flanges F1, F2. Are inserted from the facing surfaces S and T to the gap K of the second insertion hole Fb, and the bulging portion 32a is in contact with the lower surface of the flange F1 and is fitted into the first insertion hole Fa without a gap. Thus, leakage from the first insertion hole Fa is prevented. The first fitting portion 32 has such a dimension that the tip of the neck lower portion 32b is positioned at a substantially central height position of the second insertion hole Fb in a state where it is fitted in the first insertion hole Fa. Yes.

  Regarding leakage prevention, more specifically, a waterproof ring provided in the circumferential direction on the upper surface of the bulging portion 32a is in watertight contact with the lower surface of the flange F1, thereby preventing leakage. Moreover, it arrange | positions in the outer side rather than the 1st insertion hole Fa centering on the opposing surface S of the flange F1, and the 1st support part 31 is supported by the communicating pipe B via the support member 41 (refer FIG. 4). As a result, the bolt 31 b presses the first fitting portion 32.

  As shown in FIG. 11, the pipe connecting member moving tool 6 includes the support member 41 described above, a screw member 42 supported by the support member 41 and extending in the pipe axis direction of the communication pipe B, that is, upward, and the repair valve FP. The fixed member is fixedly attached to the flange F3, and the movable member 43 is supported so as to be movable along the screw member 42. The pressing member is supported so as to be movable along the screw member 42 and presses the flange F2 of the repair valve FP. Member 44.

  As shown in FIGS. 5A and 5B, the support member 41 has a two-divided structure supported by the communication pipe B, and includes substantially symmetrical support pieces 41c and 41d. 6 (b), after the support pieces 41c and 41d are arranged along the outer peripheral surface of the communication pipe B, a plurality of insertion holes are provided in both the left and right ends of the support member 41 in the figure. The support member 41 is attached along the outer peripheral surface of the communication pipe B by fastening with the bolt 47 and the nut 46.

  As shown in FIG. 5 (b), a bolt hole 41 a for screwing with the bolt 49 described above at the center of the support piece 41 c and a bolt 48 for supporting the support member 41 on the outer peripheral surface of the communication pipe B are provided. Bolt holes 41b for screwing are formed. The support piece 41d has the same structure as the support piece 41c. Although not shown, a bolt hole for screwing the bolt 49 and a bolt 48 are screwed into the center of the support piece 41d. Bolt holes are formed.

  As shown in FIG. 5B, the extending portions 41g and 41h of the support pieces 41c and 41d extending in the left and right directions of the support pieces 41c and 41d have semicircular cutout grooves 41e and 41e, as shown in FIG. 41f is formed, and when the support member 41 is attached along the outer peripheral surface of the communication pipe B, an insertion hole 41k through which a screw member 42 described later is inserted is formed by the notch grooves 41e and 41f. It has become.

  As shown in FIG. 4, a plurality of screw members 42 are arranged on the left and right sides of the repair valve FP in the drawing, and the screw members 42 include a nut 51 disposed above the moving member 43, and a moving member 43. A nut 52 disposed on the lower side, a nut 53 that presses the upper surface of the pressing member 44 downward, and a nut 54 disposed on the lower side of the pressing member 44 are screwed together, and these nuts 51-54. Is movable with respect to the screw member 42.

  4 and 5 (a) and 5 (b), the lower part of the screw member 42 is inserted into the insertion hole 41k in a state where the support member 41 is attached along the outer peripheral surface of the communication pipe B. An attachment piece 55 that contacts the upper surface of the extending portions 41g and 41h is fixed to the lower portion of the screw member 42 by welding or the like, and contacts the lower surface of the extending portions 41g and 41h, and a nut 56 is screwed into the screw member 42. The extending portions 41g and 41h are sandwiched between the mounting piece 55 and the nut 56, so that the screw member 42 is fixedly supported with respect to the support member 41.

  As shown in FIGS. 9A to 9C, the moving member 43 includes two-piece support pieces 43a and 43b supported by the flange F3 of the repair valve FP and the flange F4 of the air valve AV1. The support pieces 43a, 43b are assembled by fixing means (not shown). Further, the support pieces 43a and 43b have a substantially symmetrical structure.

  Upper collar portions 43c, 43c and lower collar portions 43d, 43d extending from the upper end and the lower end of the support pieces 43a, 43b to face each other are provided, and are formed in a substantially U shape in a side view. A plurality of bolts 59 are screwed to the lower flange portions 43d and 43d, and the lower surfaces 43k and 43k of the upper flange portions 43c and 43c and the bolts 59 sandwich the flanges F3 and F4. The moving member 43 is fixedly attached to the repair valve FP and the air valve AV1 (see FIG. 4).

  As shown in FIG. 9A, in the support pieces 43a and 43b, semicircular cutout grooves 43e and 43f are respectively formed in the extending portions 43g and 43h extending in the left and right directions in the figure, and the support pieces 43a and 43b are respectively formed. , 43b are assembled so that a through hole 43m through which the screw member 42 is inserted is formed by the cutout grooves 43e, 43f.

  Then, as described above, with the lower surfaces 43k and 43k of the support pieces 43a and 43b and the bolts 59 sandwiching the flanges F3 and F4, the nut 51 is screwed in, so that the moving member 43 is in the air The valve AV, the repair valve FP, and the attachment member 3 fixedly attached to the flange F2 of the repair valve FP are relatively movable along the screw member 42 in the vertical direction (see FIG. 4).

  As shown in FIGS. 12A to 12C, the pressing member 44 includes support pieces 44a and 44b having a two-part structure, and the support pieces 44a and 44b are assembled by fixing means (not shown). It is like that. Further, the support pieces 44a and 44b have a substantially symmetrical structure.

  The support pieces 43a and 43b are formed with a pressing portion 44h that extends downward and presses the upper surface of the flange F2. Further, as shown in FIG. 12 (a), in the support pieces 44a and 44b, semicircular cutout grooves 44e and 44f are respectively formed in the extending portions 44c and 44d extending in the horizontal direction in the figure. By assembling the support pieces 44a and 44b, an insertion hole 44g through which the screw member 42 is inserted is formed by the cutout grooves 44e and 44f.

  As described above, the nut 53 is screwed downward, so that the nut 53 presses the upper surfaces of the extending portions 44c and 44d, and the pressing portion 44h presses the upper surface of the flange F2, thereby preventing the water-stopping member. Even if 23d and 24d are in close contact with the outer peripheral surface of the flange F1, the repair valve FP and the attachment member 3 fixedly attached to the repair valve FP are moved downward.

  Next, the desorption process which performs desorption of a pipe connection member by a continuous flow using a desorption apparatus is demonstrated.

  As shown in FIG. 1, the flange F1 of the communication pipe B connected by the existing bolt 18 and the nut 19 and the flange F2 of the repair valve FP are cleaned, the state of the flange F1 and the flange F2 is confirmed, and packing is performed. Repair any irregularities that could adversely affect water stoppage due to the above. Next, the existing bolts 18 and nuts 19 are replaced one by one with temporary bolts and nuts for work not shown. After the replacement, the mounting member 3 is attached to the flanges F1 and F2 from the circumferential direction as shown in FIG.

  In order to attach the attachment member 3 to the pair of flanges F1 and F2, first, the bulging portions 23a and 24a are arranged on the flanges F1 and F2 such that the upper surfaces of the bulging portions 23a and 24a and the lower surface of the flange F2 come into contact with each other. Inserted between the opposing surfaces S and T on the outer peripheral side (see FIG. 7A), the mounting member 3 is arranged, the bolt 30 is screwed in the inner diameter direction, and the tip of the bolt 30 is brought into contact with the upper surface of the flange F2. The mounting member 3 is positioned with respect to the flanges F1 and F2, and is tightened with mounting bolts and nuts 4 in the bolt insertion holes of the latching portions 23b and 24b of the arc-shaped portions 23 and 24 (see FIG. 6A).

  That is, the upper surface of the bolt 30 and the bulging portions 23a and 24a sandwich the flange F2, so that the flange housing portion 5 constituting the mounting member 3 is fixedly attached to the flange F2 of the repair valve FP.

  Next, as shown in FIGS. 4 and 5A, the support pieces 41c and 41d of the support member 41 are disposed on the outer peripheral surface of the communication pipe B, and the upper end surfaces of the support pieces 41c and 41d are the flanges F1. The support members 41c and 41d are assembled with the bolts 47 and the nuts 46 at positions where they contact the lower surface, and the bolts 48 are screwed into the bolt holes 41b of the support pieces 41c and 41d. Mounted fixed to the surface. Then, the screw member 42 is inserted into the insertion hole 41k, and the extending portions 41g and 41h are sandwiched between the attachment piece 55 and the nut 56, whereby the screw member 42 is fixedly supported with respect to the support member 41.

  As shown in FIGS. 4 and 9A, after the screw member 42 is supported by the support member 41, the flanges F3 and F4 are inserted into the insertion hole 43m of the moving member 43 so that the screw member 42 is inserted. By attaching the support pieces 43a and 43b and sandwiching the flanges F3 and F4 with the lower surfaces 43k and 43k of the support pieces 43a and 43b and the bolts 59, the moving member 43 is fixedly attached to the repair valve FP and the air valve AV1. . Further, as described above, since the flange accommodating portion 5 constituting the attachment member 3 is fixedly attached to the flange F2 of the repair valve FP, the moving member 43, the repair valve FP, the air valve AV1, and the flange accommodating portion 5 are provided. They will be connected together.

  Next, in order to attach the leakage prevention members 21 and 22 to the insertion holes Fa and Fb, respectively, the temporary bolts and nuts for work described above attached to the insertion holes Fa and Fb are removed, and shown in FIG. As described above, the second fitting portion 34 is fitted into the second insertion hole Fb from the upper surface side of the flange F2.

  3 and 8B, the pressing portion 33 is inserted into the insertion grooves 23k and 24k from the outer side of the peripheral wall portions 23h and 24h of the mounting member toward the second insertion hole Fb. When the bolt 29 is screwed into the pressing portion 33 and the projecting portions 23m and 24m integrally from the outer side of the peripheral wall portions 23h and 24h, the other end portion of the pressing portion 33 connects the second fitting portion 34. By pressing, the contact state between the bulging portion 34a of the second fitting portion 34 and the upper surface of the flange F2 is maintained.

  More specifically, as shown in FIG. 8B, by screwing the bolt 29, the pressing portion 33 is directed substantially vertically downward along the inner wall of the insertion groove 23k (illustrated white arrow). (See) A pressing force to be pressed is given, and the second fitting portion 34 is surely pressed by this pressing force. At this time, the pressing portion 33, the second fitting portion 34, and the bolt 29 constituting the second leakage prevention member 22 are positioned below the upper end surfaces of the peripheral wall portions 23 h and 24 h of the mounting member 3. .

  Thus, the insertion grooves 23k and 24k are formed in the peripheral wall portions 23h and 24h of the mounting member 3 above the flange F2, and the pressing portion 33 is inserted into the second insertion hole in the insertion grooves 23k and 24k. By inserting it toward Fb, it is not necessary to extend the second leakage preventing member 22 to the repair valve FP side from the peripheral wall portions 23h, 24h, so that it is supported by the protruding portions 23m, 24m of the mounting member 3. The pressing portion 33 and the second fitting portion 34 can be disposed toward the second insertion hole Fb without interfering with the repair valve FP, and the pressing portion 33 inserted through the insertion grooves 23k and 24k is inserted. The second insertion hole Fb can be reliably sealed by moving along the inside of the grooves 23k and 24k.

  Further, the second leakage preventing member 22 is pressed through the second fitting portion 34 fitted into the second insertion hole Fb and the second fitting portion 34 through the insertion grooves 23k and 24k. Part 33 and a bolt 29 for operating the pressing part 33 provided on the projecting parts 23m, 24m on the outer peripheral side of the peripheral wall parts 23h, 24h, and therefore on the outer peripheral side of the peripheral wall parts 23h, 24h not interfering with the repair valve FP. By simply operating the bolt 29, the second fitting portion 34 fitted into the second insertion hole Fb can be pressed by the pressing portion 33, and the second insertion hole Fb can be sealed.

  Further, since the pressing portion 33 and the second fitting portion 34 are provided independently from each other, the leakage prevention can be achieved in the case of a leakage preventing member in which the pressing portion and the second fitting portion are not separate but integrated. This embodiment eliminates the sealing problem caused by the incompatibility of fitting of the leakage preventing member or difficulty in fitting adjustment by simultaneously performing the step of attaching the member to the attachment member and the step of fitting into the insertion hole. As described above, the step of fitting the second fitting portion 34 into the second insertion hole Fb and the step of attaching the pressing portion 33 to the arcuate portions 23 and 24 are performed as a pressing portion. Since the bolt 33b presses the second fitting portion 34 in a state where the bolt 33b is regulated by the arc-shaped portions 23, 24, the mounting process of the second leakage preventing member 22 can be easily performed, and the existing fluid pipe P Preventing the second leakage preventing member 22 from coming off due to the fluid pressure inside Kill.

  Next, as shown in FIG. 6B and FIG. 8B, the first fitting portion 32 is inserted from the lower surface side of the flange F1, and the neck lower portion 32b passes through the first insertion hole Fa. It fits so that it may penetrate through the space | gap K of the 2nd penetration hole Fb. Then, the support pieces 31a and 31a are fixed to the support pieces 41c and 41d of the support member 41 with bolts 49 so that the bulging portion 32a of the first fitting portion 32 is kept in contact with the lower surface of the flange F1. Then, the bolt 31b is screwed into contact with the first fitting portion 32.

  Thus, the 1st support part 31 and the 1st fitting part 32 are provided mutually independently, and the 1st support part and the 1st fitting part are not a separate body but a leak prevention In the case of a member, due to the mismatching of fitting of the leakage preventing member or difficulty of fitting adjustment by simultaneously performing the step of attaching the leakage preventing member to the outer peripheral surface of the communication pipe and the step of fitting into the insertion hole. The step of fitting the first fitting portion 32 into the first insertion hole Fa, and the step of attaching the first support portion 31 to the communication tube B, as in this embodiment. Since the bolt 31b as the first pressing portion presses the first fitting portion 32 in a state of being restricted by the communication pipe B, the mounting process of the first leakage prevention member 21 is performed. The first leakage preventing member 21 can be easily pulled out by the fluid pressure in the existing fluid pipe P. It is possible to prevent.

  The above-described temporary bolts and nuts for work are replaced with the first leakage prevention member 21 and the second leakage prevention member 22 for all the predetermined numbers. In addition, you may make it replace | exchange the existing volt | bolt 18 and the nut 19, and the 1st leak prevention member 21 and the 2nd leak prevention member 22 directly, without using the temporary bolt and nut for work.

  Next, a gap is formed so that the valve body 2a can be inserted between the opposed surfaces S, T of the pair of flanges F1, F2. Explaining this gap forming step, in the state of FIG. 8B, the state of the bolt 26 that restricts the relative movement of the pair of flanges F1 and F2 is the state of FIG. From the state of 7 (a), the bolts 26 are loosened one by one by a predetermined pitch and screwed downward (see the white arrow in FIG. 7 (a)). Due to the screwing of the bolt 26, a gap having a predetermined length is generated in the axial direction of the communication pipe B between the bolt 26 and the lower surface of the flange F1.

  Next, as shown in FIG. 10, the nuts 51 and 52 are screwed upward (see the white arrow in the drawing), whereby the extending portions 43 g and 43 h of the moving member 43 are lifted by the nut 52, and the moving member 43 moves upward with the repair valve FP and air valve AV1 fixedly attached to the moving member 43 and the attachment member 3 fixedly attached to the flange F2 of the repair valve FP. By this movement, the flange F2 is lifted upward by allowing a predetermined length of the gap generated in the axial direction of the communication pipe B on the lower surface of the bolt 26 and the flange F1, and the opposing surfaces S, T of the flanges F1, F2 A gap is formed between which a valve body 2a described later can be inserted.

  Thus, the pipe connecting member moving tool 6 is supported by the support member 41 supported on the outer peripheral surface of the communication pipe B, and the screw member 42 supported by the support member 41 and extending in the tube axis direction of the communication pipe B. And a moving member 43 fixedly attached to the flange F3 of the repair valve FP and supported so as to be movable upward along the screw member 42. The moving member 43 includes the repair valve FP and the air valve. The pair of flanges F <b> 1 and F <b> 2 are maintained while maintaining the sealed state by the mounting member 3 by relatively moving in the tube axis direction of the communication pipe B along the screw member 42 while supporting the weights of the AV <b> 1 and the mounting member 3. Can be separated.

  Moreover, the moving member 43 with the repair valve FP, the air valve AV1, and the attachment member 3 can be easily moved only by screwing the nut 52 into the screw member 42.

  On the other hand, as described above, the second fitting portion 34 has a short neck lower portion 34b in which a gap is formed in the second insertion hole Fb to be fitted, and the first fitting portion 32 is By having a long neck lower portion 32b that passes through the fitting first insertion hole Fa and is inserted through the gap K, the pair of flanges F1 and F2 are long when the pair of flanges F1 and F2 are separated from each other. It is guided by the small neck lower part 32b and can prevent the pair of flanges F1, F2 from being displaced.

  Further, when the gap is formed, even if the temporary bolts and nuts attached to the first insertion hole Fa and the second insertion hole Fb are removed, the relative movement of the flanges F1 and F2 can be reduced by the bolt 26. When the temporary bolts and nuts are removed or when the gap between the opposing surfaces S and T of the flanges F1 and F2 is formed by the pipe connecting member moving tool 6 so that the valve body 2a can be inserted. The possibility that the air valve AV1 and the repair valve FP are detached due to the fluid pressure in the pipe P can be eliminated, and leakage from between the opposing surfaces S, T of the pair of flanges F1, F2 can be prevented.

  In this gap forming step, the first leakage prevention member 21 that seals the first insertion hole Fa formed in the flange F1 of the communication pipe B is supported on the outer peripheral surface of the communication pipe B via the support member 41. Since the second leakage preventing member 22 that seals the second insertion hole Fb formed in the flange F2 of the repair valve FP is provided independently, the pipe connecting member moving tool 6 makes a pair of flanges F1. , F2 even when both flanges F1, F2 move relative to each other when the gaps are formed between the opposing surfaces S, T, the first leakage prevention member 21 and the communication pipe that supports the first leakage prevention member 21 There is no change in the relative position of the outer peripheral surface of B, the first leakage prevention member 21 can maintain the state where the first insertion hole Fa is sealed, and leakage from the first insertion hole Fa is reliably prevented. Can do.

  In addition, as described above, the first leakage prevention member 21 is supported by the support member 41, so that a special member for restricting the relative movement between the first leakage prevention member 21 and the communication pipe B is used. It is possible to reduce the number of parts without providing the like.

  On the other hand, in the gap forming step, the mounting member 3 is kept fixed to the flange F2 of the repair valve FP by the bolt 30 and the bulging portion 24a provided on the peripheral wall portions 23h and 24h. And the relative movement with respect to the flange F1 of the communication pipe B together with the repair valve FP, and by this relative movement, a gap is formed between both the flanges F1 and F2, There is no change in the relative position with respect to the mounting member 3 that supports the second leakage prevention member 22, and the second leakage prevention member 22 can maintain a state in which the second insertion hole Fb is sealed, and the second insertion hole Fb. Can be reliably prevented from leaking.

  Next, as shown in FIG. 10, the valve shaft 2c is pushed into the gap between the flanges F1 and F2 to move the valve body 2a toward the center of the flange and insert it to a predetermined position where the communication pipe B is closed. In the state of FIG. 10, a slight gap is generated between the valve body 2a and the facing surface S. Next, by screwing the nuts 51 and 52 downward, the moving member 43 is fixed to the repair valve FP and the air valve AV1 to which the moving member 43 is fixed and the flange F2 of the repair valve FP. It moves downward with the attached mounting member 3. By this movement, the repair valve FP presses the valve body 2a against the facing surface S of the flange F1 to stop the water without the gap.

  Next, the screw member 42 is inserted into the insertion hole 44g so that the pressing portion 44h of the pressing member 44 is in contact with the upper surface of the flange F2 and the extended portions 44c and 44d of the pressing member 44 are positioned between the nuts 53 and 54. The pressing member 44 is attached by inserting (see FIG. 11).

  After the pressing member 44 is attached, the nut 53 is screwed downward to apply a pressing force to the extending portions 44c and 44d, and the pressing portion 44h of the pressing member 44 presses the upper surface of the flange F2. That is, the pressing member 44 directly presses the flange F2 of the repair valve FP toward the communication pipe B, so that even if the air valve AV1 and the moving member 43 are removed as shown in FIG. The water stoppage is maintained. In addition, the repair valve FP or the like is not necessarily moved downward by the moving member 43 and the valve body 2a is pressed to stop the water. For example, the repair valve FP or the like is moved downward by the pressing member 44, and the valve The body 2a may be pressed to stop water. Next, as shown in FIG. 14, the closing device 11 is attached to the flange F3 of the repair valve FP.

  The closing device 11 is integrally connected to a housing case 12 that is watertightly attached to the repair valve FP, a closing member 13 that is housed in the housing case 12 and closes the communication pipe B, and an upper end portion of the closing member 13. The insertion member 14 protrudes from the upper surface of the housing case 12 and is provided so as to be vertically movable with respect to the housing case 12.

  The housing case 12 has a flange 12a that can be connected to the flange of the repair valve FP in a watertight manner at the lower end, and a bolt insertion hole corresponding to the bolt insertion hole of the repair valve FP is formed in the flange 12a. In addition, a closing member 13 is accommodated inside the accommodation case 12, and an insertion hole 12b through which the insertion member 14 is inserted in a watertight manner is formed on the upper surface of the accommodation case 12.

  Furthermore, a drainage valve 12d is provided above the housing case 12 so as to be openable and closable with the inside of the housing case 12, so that the water stop state can be confirmed when the closing member 13 described later is inserted. Yes.

  The insertion member 14 is mainly composed of an outer cylindrical portion 14a formed in an inner cylindrical shape and an inner collar portion 14b that is rotatably inserted in the outer cylindrical portion 14a, and an outer periphery of the outer cylindrical portion 14a. The surface is inserted through the packing 12c into the insertion hole 12b of the housing case 12 so as to be movable up and down, and the closing member 13 is integrally connected to the lower end portion of the inner flange portion 14b, and the upper end of the inner flange portion 14b. The part is provided with a feed screw 14c that allows a water-stopping rubber 13a described later to expand and contract in the radial direction.

  Further, the screw member 42 is inserted with a washer 73 and a moving arm 20 having insertion holes through which the two screw members 42 and 42 can be inserted, and the moving arm 20 is in contact with the washer 73. The nuts 66 and 67 are screwed so as to sandwich the washer 73, the fixing plate 58 is inserted into the upper end portions of the screw members 42 and 42, and the nuts 77 and 77 are screwed. , 42.

  Then, the water stop state of the valve body 2a due to the pressing of the pressing member 44 is released from the state of FIG. 14, and the valve shaft 2c is retracted from the gap between the flange F1 and the flange F2 to move the valve body 2a into the rectangular portion 2e. 15, the communication pipe B is opened, and as shown in FIG. 15, the nuts 66 and 67 are screwed downward so that the feed screw of the insertion member 14 is inserted from the central hole 20 a formed in the moving arm 20. By projecting 14c upward and pressing the upper end of the outer cylinder part 14a downward via the moving arm 20, the vertical position of the closing device 11 is adjusted. The adjustment ends when the closing member 13 reaches the inner surface side of the communication pipe B.

  Next, the feed screw 14c is rotated with a ratchet or the like (not shown), and the water stop rubber 13a of the closing member 13 connected to the lower end portion of the inner flange portion 14b is extended in the radial direction to the inner peripheral surface of the communication pipe B in the circumferential direction. It adheres over. Thus, the water stop rubber 13a is pressed and deformed and expanded in the radial direction, and the inside of the communication pipe B is shielded to be in a water stop state. After that, by opening the drain valve 12d of the storage case 12, it can be confirmed whether or not the water stop state is reliably established.

  Next, as shown in FIG. 16, the attachment member 3 and the pressing member 44 are removed from the communication pipe B while maintaining the water stop state of the water stop rubber 13 a. Next, in a state where the closing member 13 is supported by the moving arm 20 via the insertion member 14 so that the closing member 13 does not come out due to the fluid pressure in the existing fluid pipe P, the storage case 12 and the repair valve FP are The closing member 13 and the insertion member 14 are slightly pulled up.

  Then, the retaining bracket 71 having a two-divided structure is attached to the space where the repair valve FP is pulled up with the nuts 53 and 54 so as to be sandwiched between the closing member 13 and the outer cylinder portion 14a. By doing so, it is possible to prevent the blocking member 13 from being pulled out by the fluid pressure in the existing fluid pipe P by the attached retaining fitting 71. Next, the moving arm 20 is moved upward (see the white arrow in the figure) by screwing 66 and 67, and the repair valve FP and the housing case 12 are pulled up and removed as shown in FIG.

  After that, as shown in FIG. 18, a state where the new repair valve V and the housing case 12 are inserted and suspended in the outer cylinder portion 14 a of the insertion member 14 and supported by the moving arm 20 so that the closing member 13 does not come out. Then, the retaining bracket 71 is removed. The repair valve V is water-tightly connected to the flange F1 of the communication pipe B with the existing bolt 18 and the nut 19, and the housing case 12 is installed on the upper side of the repair valve V.

  Since the repair valve V can be attached after inspecting, cleaning, and repairing the flange F1 of the communication pipe B, the water stop performance can be reliably ensured. When the repair valve V and the housing case 12 are attached, the water stop rubber 13a is reduced by operating the feed screw 14c, and the closing member 13 is pulled up to the inside of the housing case 12.

  Next, after the repair valve V is closed and the housing case 12 and the pipe connecting member moving tool 6 are removed, the air valve AV2 is attached to the upper side of the repair valve V as shown in FIG. By opening, a new repair valve V can be installed below the air valve AV2. In this case, the air valve AV2 can be converted to a new one, and the existing air valve AV1 can be inspected and maintained and reattached.

  Next, modifications of the present invention will be described below. A description of the same configuration as that of the above-described embodiment is omitted.

  A modification of the pressing member of the present invention will be described with reference to the drawings. FIG. 20A is a top view showing a moving member of the modification, and FIG. 20B is a front view of the same. FIG. 21 is a front view showing a pipe connecting member detaching apparatus to which a moving member according to a modification is applied.

  As shown in FIGS. 20 (a) and 20 (b), the moving member 43 ′ of the modified example is composed of support pieces 43a ′ and 43b ′ having a two-part structure, and the support pieces 43a ′ and 43b ′ are It has a substantially symmetrical structure.

  As shown in FIG. 20B, extending portions 43d ′ and 43d ′ extending downward are formed in the support pieces 43a ′ and 43b ′, and the extending portions 43d ′ and 43d ′ are mutually connected. A bolt 60 'is screwed toward the extended portions 43d' and 43d '. In addition, a plurality of bolts 59 ′ are screwed onto the upper ends of the support pieces 43 a ′ and 43 b ′ downward.

  These bolts 59 'and 60' sandwich the flanges F3 and F4 so that the moving member 43 'is fixedly attached to the repair valve FP and the air valve AV1 (see FIG. 21).

  As shown in FIG. 20A, in the support pieces 43a ′ and 43b ′, semicircular cutout grooves 43e ′ and 43f ′ are respectively formed in the extending portions 43g ′ and 43h ′ extending in the left and right directions in the drawing. In the state where the moving member 43 ′ is attached along the outer peripheral surface of the flanges F3 and F4, an insertion hole 43m ′ through which the screw member 42 is inserted is formed by the notch grooves 43e ′ and 43f ′. ing.

  As described above, the bolts 60 ′ are screwed to the extending portions 43d ′ and 43d ′, and a plurality of bolts 59 ′ are screwed downward to the upper ends of the support pieces 43a ′ and 43b ′. Therefore, when the moving member 43 ′ is attached to the flanges F3 and F4 by the bolt 61 ′, the bolts 59 ′ and 60 ′ are not screwed upward, so that the moving member 43 ′ can be easily attached to the flange F3. Can be attached to F4.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  In the above-described embodiment, the existing fluid pipe P is configured as a water supply transport pipe in which the fluid flowing therein is clean water, but the fluid is not necessarily limited to clean water, and may be industrial water, for example. Also, it can be applied to a fluid pipe through which a fluid in a gas or gas-liquid mixed state flows.

  Moreover, in the said Example, although the surrounding wall parts 23h and 24h are provided in the repair valve FP side of the flange F2, the upper end surface of these surrounding wall parts 23h and 24h is notched, but the insertion grooves 23k and 24k are formed, As long as the portion is provided on the peripheral wall portion of the attachment member, the location where the opening is formed and the shape of the opening are not limited to those in the above embodiment. For example, the attachment in the vicinity of the flange of the pipe connection member An opening that penetrates the inner and outer peripheral wall surfaces may be provided in the peripheral wall portion of the member, leaving the upper end surface of the peripheral wall portion from the outer peripheral side of the mounting member toward the second insertion hole.

  In the embodiment, the first fitting portion 32 of the first leakage prevention member 21 has the second insertion hole Fb into which the second fitting portion 34 of the second leakage prevention member 22 is fitted. Although it has a long neck lower part 32b that penetrates and further passes through the gap K, for example, the first leakage preventing member has a gap formed on the opposing surface side of the pair of flanges in the first insertion hole. The second leakage prevention member has a long neck lower portion that passes through the second insertion hole and is inserted through the gap. There may be.

  Moreover, in the said Example, the 1st leak prevention member 21 consists of the 1st support part 31 and the 1st fitting part 32 provided independently of the 1st support part 31. However, the first leakage prevention member is not limited to the first leakage prevention member in which the first support portion and the first fitting portion are separately configured. For example, the first leakage prevention member is constituted by one member. In addition, it may be supported on the outer peripheral surface of the communication pipe and fitted in the first insertion hole.

  Moreover, in the said Example, although the 2nd leak prevention member 22 consists of the press part 33 and the 2nd fitting part 34 provided independently of the press part 33, a press part and 2nd The second leakage preventing member is not limited to the second leakage preventing member constituted by a separate member. For example, the second leakage preventing member is constituted by one member and is supported by the mounting member and the second leakage preventing member. It may be fitted into the two insertion holes.

  Moreover, in the said Example, although the 1st support part 31 of the 1st leak prevention member 21 is supported by the outer peripheral surface of the communicating pipe B via the support member 41, for example, the 1st leak prevention member May be supported by a mounting member.

It is a front view which shows the state by which the air valve and repair valve as a pipe connection member concerning this invention were attached to the communicating pipe. It is a front view which shows the state in which the attachment member was attached to the flange. (A) is a top view of an attachment member, (b) is a bottom view similarly, (c) is XX sectional drawing of (a). It is a front view which shows the state in which the member which comprises a pipe connection member moving tool was attached to the communicating pipe. (A) is a bottom view which shows a supporting member, (b) is a front view similarly, (c) is a top view which shows a 1st support part, (d) is also a front view It is. (A) is YY sectional drawing of FIG. 4, (b) is ZZ sectional drawing of FIG. (A) is an expanded sectional view of FIG. 4, (b) is AA sectional drawing of Fig.6 (a). (A) is BB sectional drawing of Fig.6 (a), (b) is sectional drawing which shows the state which the leakage prevention member sealed the penetration hole from the state of (a). (A) is a top view which shows a moving member, (b) is a front view similarly, (c) is WW sectional drawing of FIG. It is a partial cross section figure which shows the state which flanges separated and the valve body was inserted between the opposing surfaces of a flange. It is a partial cross section figure which shows the state from which the press member is pressing the flange of a pipe connection member from the state of FIG. (A) is a top view which shows a pressing member, (b) is a front view similarly, (c) is VV sectional drawing of FIG. It is a partial cross section figure which shows the state from which the air valve and the moving member were removed from the state of FIG. It is a partial cross section figure which shows the state in which the closure apparatus was attached. It is a partial cross section figure which shows the state which inserted and sealed the obstruction | occlusion member in the communicating pipe. It is a partial cross section figure which shows the state which removed the attachment member and the press member. It is a partial cross section figure which shows the state which removed the repair valve and the storage case. It is a partial cross section figure which shows the state which attaches a new repair valve and a storage case. It is a front view which shows the state in which the air valve was newly attached. (A) is a top view which shows the moving member of a modification, (b) is a front view similarly. It is a front view which shows the removal | desorption apparatus of the pipe connection member to which the moving member of the modification was applied.

Explanation of symbols

2a Valve body 3 Mounting member 6 Pipe connection member moving tool 13 Closure member 18 Existing bolt 21 First leakage prevention member 22 Second leakage prevention member 23h, 24h Peripheral wall portions 23k, 24k Insertion groove (opening)
26 bolts (movement regulation part)
29 bolts (operation unit)
30 bolts (fixed part)
32 1st fitting part 32b Neck lower part 33 Press part 34 2nd fitting part 34b Neck lower part 41 Support member 42 Screw member 43, 43 'Moving member 44 Press member 52 Nut B Communication pipe P Existing fluid pipe V Repair valve (Pipe connecting member)
S, T Opposing surface F1 Flange F2 Flange Fa First insertion hole Fb Second insertion hole AV1 Air valve (pipe connection member)
AV2 Air valve (pipe connecting member)
FP repair valve (pipe connecting member)

Claims (5)

Existing bolt inserted into the first insertion hole formed in the flange of the communication pipe communicating with the existing fluid pipe, and the second insertion hole formed in the flange of the pipe connection member connected to the communication pipe Removing the valve, separating the opposing surfaces of the pair of flanges, inserting a valve body to seal the communication pipe, and disposing a closing member closing the communication pipe in the communication pipe, A desorption device for a pipe connecting member for desorption,
A mounting member that is sealed and capable of forming a gap between the opposing surfaces of the pair of flanges, and that accommodates the valve body therein;
A first leakage preventing member for sealing the first insertion hole instead of the existing bolt;
A second leakage preventing member supported by the mounting member and sealing the second insertion hole in place of the existing bolt;
A fixing portion for fixing the mounting member to the flange of the pipe connecting member is provided on the peripheral wall portion of the mounting member,
An attachment / detachment device for a pipe connecting member, wherein an opening for inserting the second leakage prevention member toward the second insertion hole is formed in the peripheral wall portion.   The second leakage prevention member is provided on the outer peripheral side of the peripheral wall portion, a fitting portion that fits into the second insertion hole, a pressing portion that is inserted into the opening portion and presses the fitting portion. The pipe connecting member attaching / detaching device according to claim 1, further comprising: an operating portion that operates the pressing portion.   The apparatus for removing and attaching a pipe connecting member according to claim 1 or 2, wherein the first leakage preventing member is supported on an outer peripheral surface of the communication pipe.   4. The mounting member according to claim 1, further comprising a movement restricting portion that restricts relative movement between the opposing surfaces of the pair of flanges up to a gap length into which the valve body can be inserted. The desorption apparatus of the pipe connection member in any one. The first leakage prevention member includes at least a fitting portion that fits into the first insertion hole, and the second leakage prevention member includes at least a fitting portion that fits into the second insertion hole. ,
One of the fitting parts has a short neck lower part in which a gap is formed on the opposing surface side of the pair of flanges in the insertion hole into which the one fitting part is fitted,
The other fitting part has a long neck lower part which penetrates the insertion hole which this other fitting part fits, and is further inserted through the said space | gap. Detaching device for a pipe connecting member as described in 1.

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