JP2012077899A - Attachment/detachment device for connecting member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment/detachment device for connecting members easily and certainly attaching/detaching the connecting members without requiring any time and labor for troublesome work.SOLUTION: In the attachment/detachment device, the opposed surfaces S, T of the flange F1 of a communicating tube B communicating with the existing fluid pipe P and the flange F2 of the connecting member FP connected to the communicating tube B are separated from each other, a valve element 2a is inserted between the opposed surfaces so as to seal the communicating tube B, a closing member for closing the communicating tube is inserted into the communicating tube, and the connecting members AV1, FP are attached/detached in an uninterrupted flow state. The attachment/detachment device includes: an attachment member 3 which is hermetically attached so as to form a clearance between the opposed surfaces S, T of both the flanges F1, F2 and which internally stores the valve element 2a; supporting members 41, 42 supported by the communicating tube B and supporting the closing member inserted into the communicating tube B; and moving members 6 locked to the predetermined portion F3 of the connecting member FP and separating the opposed surfaces S, T of both the flanges F1, F2 from each other. The supporting member 41 has a supporting portion 80 supporting the moving members 6.

Description

  The present invention separates the facing surfaces of the flange of the communication pipe connected to the existing fluid pipe and the flange of the connection member connected to the communication pipe, inserts a valve body to seal the communication pipe, and closes the communication pipe. The present invention relates to a connection member attaching / detaching device that inserts a closing member into a communication pipe and attaches / detaches the connecting member in an uninterrupted state.

  The conventional desorbing device is installed in the case where a connecting member such as an air valve or a repair valve connected to a communication pipe of an existing fluid pipe via a flange is detached from the existing fluid pipe for replacement or maintenance. In order to remove the connection member while maintaining an uninterrupted flow state of the fluid pipe, the communication pipe and the connection member are covered watertight by the mounting member provided with the valve body, and the valve body is inserted between the communication pipe and the connection member. The connection pipe is water-stopped so that the connecting member can be removed.

  The attachment member is provided with a wedge body that is disposed in a state where the tapered surface is in contact with the flange surface of the connection member, and a screw member that moves the wedge body. There is one in which the connecting member moves in a direction away from the communication pipe by the tapered surface of the wedge body by rotating the member and moving the wedge body (for example, see Patent Document 1).

JP 2008-51231 A (5th page, FIG. 15)

  However, in Patent Document 1, it is necessary to insert a small wedge body between the opposing surfaces of a narrow flange in order to cause the wedge body to act on the flange of the connecting member to separate the opposing surfaces of both flanges. In addition, there is a possibility that the work of removing and attaching the connecting member becomes complicated.

  The present invention has been made paying attention to such problems, and it is an object of the present invention to provide a connecting member detaching apparatus that can easily and reliably detach a connecting member without requiring troublesome work.

In order to solve the above-described problems, a connecting member detaching apparatus according to the present invention includes:
A block that separates the opposing surfaces of the flange of the communication pipe that communicates with the existing fluid pipe and the flange of the connection member connected to the communication pipe, inserts a valve body to seal the communication pipe, and closes the communication pipe A connecting member detaching device for inserting and detaching a connecting member in a continuous flow state by inserting a member into a communication pipe,
A mounting member that is hermetically mounted so as to form a gap between the opposing surfaces of the two flanges, and that accommodates the valve body therein;
A support member that is supported by the communication pipe and supports the closing member inserted into the communication pipe;
A moving member that locks at a predetermined location of the connecting member and separates the opposing surfaces of the flanges,
The support member has a support portion that supports the moving member.
According to this feature, since the support member supported by the communication pipe has a support portion that supports the moving member, the moving member can support the closing member without requiring a separate support means. It will be supported using a support member, and in this support state, it can latch to the predetermined location of a connection member, and can separate the opposing surface of both flanges easily and reliably.

The connecting member detaching apparatus of the present invention is
The moving member is suspended from the support portion above the connection member connected to the upper side of the communication pipe.
According to this feature, the moving member suspended from the support portion above the connecting member can be locked at an arbitrary position of the connecting member located below.

The connecting member detaching apparatus of the present invention is
The moving member is a lever hoist.
According to this feature, by adopting a versatile and inexpensive lever hoist as the moving member, not only can the manufacturing cost of the detachable device be suppressed, but also the structure of the support portion of the support member can be simplified.

The connecting member detaching apparatus of the present invention is
The support member is composed of a plurality of shaft members erected along the tube axis direction of the communication pipe, and the support portion is constructed on the plurality of shaft members.
According to this feature, the support member is composed of a plurality of shaft members, so that the insertion member can be simplified, and the support portion is installed on these shaft members to stabilize the plurality of shaft members. it can.

It is a front view which shows the state in which the air valve and repair valve as a connection member in an Example 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 lever hoist as a moving member was attached. (A) is a bottom view of a support member, (b) is also a front view. (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). Fig.8 (a) is BB sectional drawing of Fig.6 (a), (b) is BB sectional drawing which shows the state which the fitting part sealed the insertion hole from the state of (a). is there. FIG. 5 is a partial cross-sectional view showing a state where flanges are separated from each other by a lever hoist and a valve element is inserted. It is a partial cross section figure which shows the state which the press member is pressing the flange. It is a partial cross section figure which shows the state from which the air valve and the lever hoist were removed. 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.

  EMBODIMENT OF THE INVENTION The form for implementing the attachment / detachment apparatus of the connection member which concerns on this invention is demonstrated below based on an Example.

  A connection member detaching apparatus according to an embodiment will be described with reference to FIGS. As shown in FIG. 1, in order 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 the inside of the pipe from becoming a negative pressure, a predetermined portion of the existing fluid pipe P Is provided with an air valve AV1 as a connecting member. The air valve AV1 is attached via a repair valve FP as a connecting member that opens and closes the flow from the communication pipe B communicating with the existing fluid pipe P.

  Instead of the above-described repair valve, a short pipe as a 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. There may be. Even if the repair valve FP is provided as shown in FIG. 1, if 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 becomes defective due to failure or the like and is replaced. Is required, the connecting member is attached and detached to the flange F1 of the communication pipe B and the flange F2 of the connecting member, and the connecting member is attached and detached.

  As shown in FIG. 9, the detaching apparatus is mainly attached in a sealed manner so as to form a gap between the opposing surfaces S and T of the pair of flanges F1 and F2, and accommodates the valve body 2a therein. 3, a lever hoist 6 as a moving member that moves the repair valve FP relative to the communication pipe B, and a shaft member 42 that constitutes a support member that inserts a closing member 13 to be described later into the communication pipe B. Yes.

  As shown in FIGS. 3A to 3C, the attachment member 3 includes a valve body 2 a, a valve housing portion 2 that houses the valve body 2 a, and an arcuate portion 24 that is connected to the valve housing portion 2. And an arcuate part 23 connected to the arcuate part 24 by mounting bolts and nuts 4. The valve housing part 2 has an internal space structure for housing the valve body 2a, and the valve body 2a can be advanced and retracted by pushing and pulling the valve shaft 2c.

  In the center of the inner wall surface of the arc-shaped portions 23 and 24, bulge portions 23a and 24a that bulge toward the inner diameter direction are formed. The bulging portions 23a and 24a have a relatively thin thickness that can be inserted between the opposing surfaces of the flange to which the arc-shaped portions 23 and 24 are attached. Further, bolts 30 for sandwiching the flanges are threaded into the peripheral wall portions 23h and 24h of the arc-shaped portions 23 and 24 so as to penetrate in the inner diameter direction.

  Water stop members 23c, 24c, 23d and 24d made of an elastic material fitted in respective fitting grooves formed over the inner wall portions are arranged on the upper and lower portions of the inner wall portions of the arc-shaped portions 23 and 24, respectively. Established. Further, the arcuate portions 23, 24 are formed with lower flange portions 23f, 24f extending from the lower ends thereof toward the arc-shaped portions 24, 23, and the lower flange portions 23f, 24f include a plurality of lower flange portions 23f, 24f. The bolts 26 are respectively screwed.

  Furthermore, insertion grooves 23k, 24k formed by cutting out the upper end surfaces of the peripheral wall portions 23h, 24h into concave grooves are formed on the peripheral wall portions 23h, 24h of the arc-shaped portions 23, 24 different from the places where the bolts 30 are arranged. A plurality 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 FIG. 4, the support member described above includes the fixed member 41, the tube axis direction of the communication pipe B supported by the fixed member 41, that is, above the repair valve FP and the air valve AV <b> 1 that are connection members. A plurality of shaft members 42 extending, and a support plate 80 as a support portion of the present invention installed on the shaft member 42 are provided. As for the shaft member 42, the external thread is substantially screwed by the outer peripheral surface over the upper and lower ends.

  As shown in FIGS. 5A and 5B, the fixing member 41 has a two-part structure supported by the communication pipe B, and includes substantially symmetrical fixing pieces 41c and 41c.

  As shown in FIG. 5B, a bolt hole 41 a for screwing with the bolt 49 described above and a bolt 48 for supporting the fixing member 41 on the outer peripheral surface of the communication pipe B are provided at the center of the fixing piece 41 c. Bolt holes 41b for screwing are formed.

  As shown in FIG. 5B, when the fixing member 41 is attached along the outer peripheral surface of the communication pipe B, an insertion hole 41 k through which a shaft member 42 described later is inserted is formed by the opposed notch grooves. It has become so.

  4 and 5 (a) and 5 (b), the lower portion of the shaft member 42 is inserted into the insertion hole 41k in a state where the fixing 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 portion 41g is fixed to the lower portion of the shaft member 42 by welding or the like, and a nut 56 is screwed into the shaft member 42 by contacting the lower surface of the extending portion 41g. The member 42 is fixedly supported with respect to the fixing member 41.

  As shown in FIG. 4, a support plate 80 for supporting the lever hoist 6 is installed on the upper end portions of the shaft members 42 arranged on the left and right sides of the repair valve FP. More specifically, a support plate 80 inserted through the shaft member 42 is placed on a nut 81 screwed into each shaft member 42, and the support plate 80 is further sandwiched by the nut 82. Each lever hoist 6 is suspended and supported on the support plate 80 by engaging a fixing hook 6a of the lever hoist 6 with a suspension ring 80a provided on the lower surface of the support plate 80.

  The lever hoist 6 as a moving member in the present embodiment includes the above-described moving hook 6c provided at the tip of the fixed hook 6a and the chain 6b, and a lever 6d capable of manually operating winding of the chain 6b. The movable hook 6c can be moved relative to the fixed hook 6a by manual operation 6d.

  Next, a desorption process in which the connection member is desorbed in a continuous flow using the desorption apparatus will be described.

  As shown in FIG. 1, 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.

  More specifically, as shown in FIG. 7 (a), it is inserted between the opposing surfaces S and T on the outer peripheral side of the flanges F1 and F2 so 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. Then, the mounting member 3 is disposed, the bolt 30 is screwed in the inner diameter direction, the tip of the bolt 30 is brought into contact with the upper surface of the flange F2, and the mounting member 3 is positioned with respect to the flanges F1 and F2, as shown in FIG. As described above, the mounting bolts and nuts 4 are tightened into the bolt insertion holes of the latching portions 23 b and 24 b of the arc-shaped portions 23 and 24. That is, the attachment member 3 is fixedly attached to the flange F2 of the repair valve FP by the upper surfaces of the bolt 30 and the bulging portions 23a and 24a sandwiching the flange F2.

  Next, as shown in FIGS. 4 and 5A, the fixing pieces 41c, 41c of the fixing member 41 are fixed with bolts 47 and nuts 46 at positions where the upper end surfaces of the fixing pieces 41c, 41c are in contact with the lower surface of the flange F1. The fixing member 41 is fixedly attached to the outer peripheral surface of the communication pipe B by assembling 41c and screwing the bolt 48 into the bolt hole 41b. Then, the shaft member 42 is inserted into the insertion hole 41k, and the extending portion 41g is sandwiched between the attachment piece 55 and the nut 56, so that the shaft member 42 is fixedly supported with respect to the fixing member 41.

  As shown in FIG. 4, after the shaft member 42 is supported by the fixing member 41, a support plate 80 is installed on the shaft member 42, and the fixing hook 6 a of each lever hoist 6 is attached to the suspension ring 80 a of the support plate 80. Lock. Next, the moving hook 6c of each lever hoist 6 is locked to the lower surface of the flange F3 of the repair valve FP by extending the length of the chain 6b with the lever 6d.

  In addition, the latching location which latches the movement hook 6c is not necessarily restricted to the flange F3 lower surface of the repair valve FP, For example, you may be an appropriate predetermined location, such as the upper bulging location in the air valve AV1.

  Next, the temporary bolt and nut for work described above are removed, and the second fitting portion 34 is fitted into the second insertion hole Fb from the upper surface side of the flange F2 as shown in FIG. 8A. To do.

  3 and FIG. 8B, the pressing portion 33 is inserted through the insertion grooves 23k and 24k toward the second insertion hole Fb, and is integrated with the pressing portion 33 and the projecting portions 23m and 24m. When the bolt 29 is screwed in from the outer side of the peripheral wall portions 23h and 24h, the other end portion of the pressing portion 33 presses the second fitting portion 34, and the contact state with the upper surface of the flange F2 is maintained. Maintained.

  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 so that the neck lower portion 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 piece 31a is fixed to the fixing piece 41c of the fixing member 41 with the bolt 49, and the bolt 31b is screwed in so that the first fitting portion 32 is kept in contact with the lower surface of the flange F1. 1 is brought into contact with the fitting portion 32.

  Next, from the state of FIG. 7A, the bolts 26 are loosened one by one by a predetermined pitch and screwed downward (see the white arrow in FIG. 7A). 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, by manually operating the lever 6 d of the lever hoist 6, the support plate 80 to which the fixed hook 6 a is locked is used as a reaction force to wind up the chain 6 b and pull up the moving hook 6 c. Thus, the repair valve FP and the air valve AV1 locked to the moving hook 6c and the attachment member 3 fixedly attached to the flange F2 of the repair valve FP move upward. 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.

  At this time, as described above, the second fitting portion 34 has a short neck lower portion 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 that passes through the fitting first insertion hole Fa and passes through the gap K, when the pair of flanges F1 and F2 are separated, the pair of flanges F1 and F2 are long. It is possible to prevent the pair of flanges F1, F2 from being displaced.

  Further, since the relative movement of both flanges F1 and F2 is restricted to the gap by the bolt 26, a gap in which the valve element 2a can be inserted is formed between the opposing surfaces S and T of the flanges F1 and F2 by the lever hoist 6. In addition, it is possible to eliminate the possibility that the air valve AV1 and the repair valve FP are detached due to the fluid pressure in the existing fluid pipe P, and to prevent leakage between the opposing surfaces S, T of the pair of flanges F1, F2.

  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. Next, the pressing member 44 is attached to the shaft member 42.

  Although not shown in particular, the pressing member 44 is composed of two substantially symmetric support pieces, and each support piece is formed with a pressing portion 44h that extends downward and presses the upper surface of the flange F2. ing. Further, by assembling each support piece, an insertion hole for inserting the shaft member 42 is formed by making the notch groove formed in the extending portion 44c face each other.

  Then, the nut 53 presses the upper surface of the extending portion 44c, and the pressing portion 44h presses the upper surface of the flange F2, so that the repair valve FP and the attachment member 3 fixedly attached to the repair valve FP move downward. It is like that.

  After the pressing member 44 is attached, the moving hook 6c of the lever hoist 6 is removed from the flange F3 of the repair valve FP, and the nut 53 is screwed downward so that the pressing portion 44h of the pressing member 44 removes the upper surface of the flange F2. Pressing and repairing valve FP, air valve AV1 connected to repairing valve FP, flange housing 5 attached to flange F2, and repairing valve FP are lowered, and repairing valve FP faces valve body 2a to face F1. Press S to stop water. After the water stoppage, the air valve AV1 is removed as shown in FIG. 11, and the closing device is attached to the flange F3 of the repair valve FP as shown in FIG.

  As shown in FIG. 12, the closing device includes a housing case 12 that is watertightly attached to the repair valve FP, a closing member 13 that is housed inside the housing case 12 and closes the communication pipe B, and an upper end of the closing member 13. And an insertion member 14 that is integrally connected to the housing and protrudes from the upper surface of the housing case 12 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 shaft member 42 is inserted with the moving arm 20 having an insertion hole through which the two shaft members 42 and 42 can be inserted, and screwed with nuts 66 and 67 so as to sandwich the moving arm 20. The fixing plate 58 is fixed to the shaft members 42, 42 by inserting the fixing plate 58 into the upper end portions of 42, 42 and screwing the nuts 77, 77.

  Then, from the state of FIG. 12, the pressing of the pressing member 44 is released, 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 valve housing portion 2, thereby communicating the pipe B. 13 and screwing nuts 66 and 67 downward as shown in FIG. 13, the feed screw 14 c of the insertion member 14 protrudes upward from the central hole 20 a formed in the moving arm 20. The closing member 13 is arranged on the inner surface side of the communication pipe B by pressing the upper end of the outer cylinder portion 14a downward through the moving arm 20.

  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. The inside of the communication pipe B is shielded and the water is stopped. Thereafter, the water stoppage state can be confirmed by opening the drain valve 12d of the housing case 12.

  Next, as shown in FIG. 13, 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, as shown in FIG. 14, in the space where the repair valve FP is pulled up, nuts 53 and 54 hold the split metal fitting 71 having a two-part structure between the closing member 13 and the outer cylindrical portion 14a. Install. 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.

  Thereafter, as shown in FIG. 16, 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 shaft member 42 are removed, the air valve AV2 is attached to the upper side of the repair valve V and the repair valve V is opened as shown in FIG. Accordingly, 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.

  As described above, according to the connection member detaching apparatus of the present invention, the support member supported by the communication pipe B has the support plate 80 as the support portion that supports the lever hoist 6 as the moving member. Therefore, the lever hoist 6 is supported by using a support member for inserting the closing member 13 without requiring a separate support means. In this support state, the repair valve FP as the connection member is supported. The opposing surfaces S and T of the flanges F1 and F2 can be easily and reliably separated by being locked to the flange F3 which is a predetermined location.

  In addition, the repair valve FP as a connecting member and the lever hoist 6 suspended from the support plate 80 above the air valve AV1 are locked at an arbitrary position of the repair valve FP or the air valve AV1 positioned below. can do.

  Further, by adopting a versatile and inexpensive lever hoist 6 as the moving member, not only can the manufacturing cost of the detaching device be suppressed, but also the configuration of the support plate 80 as the support portion of the support member can be simplified.

  Furthermore, the support member can be simplified by configuring the support member with a plurality of shaft members 42, and the support plate 80 can be constructed over the shaft members 42 to stabilize the plurality of shaft members 42. it can.

  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.

  For example, in the above embodiment, the fluid in the fluid pipe is clean water, but the fluid flowing in the fluid pipe is not necessarily limited to clean water, and may be, for example, industrial water, or a gas or gas-liquid mixed state It may be a fluid pipe through which the fluid flows.

  Further, for example, the lever hoist 6 that winds the chain 6b by manual operation of the lever 6d is shown as the moving member in the above embodiment, but the moving member is a chain block that winds the chain by automatic operation by electric drive, for example. It may be.

  Further, for example, in the above-described embodiment, the first fitting portion 32 and the second fitting hole separate from the first insertion hole Fa of the flange F1 and the second insertion hole Fb of the flange F2 facing each other, respectively. Although the part 34 is watertightly fitted, for example, instead of the both fitting parts 32 and 34 described above, a watertight bolt that penetrates both insertion holes of the opposing flange, and a watertight nut that is screwed into the watertight bolt, Thus, both the insertion holes may be sealed in a watertight manner.

2a Valve body 3 Mounting member 6 Lever hoist (moving member)
13 Closure member 42 Shaft member (support member)
80 Support plate (support part)
AV1, AV2 Air valve (connecting member)
B Communication pipe F1, F2 Flange FP, V Repair valve (connecting member)
P Existing fluid pipe S, T Opposite surface

Claims (4)

A block that separates the opposing surfaces of the flange of the communication pipe that communicates with the existing fluid pipe and the flange of the connection member connected to the communication pipe, inserts a valve body to seal the communication pipe, and closes the communication pipe A connecting member detaching device for inserting and detaching a connecting member in a continuous flow state by inserting a member into a communication pipe,
A mounting member that is hermetically mounted so as to form a gap between the opposing surfaces of the two flanges, and that accommodates the valve body therein;
A support member that is supported by the communication pipe and supports the closing member inserted into the communication pipe;
A moving member that locks at a predetermined location of the connecting member and separates the opposing surfaces of the flanges,
The connecting member attaching / detaching device, wherein the supporting member has a supporting portion for supporting the moving member.   The connecting member detaching apparatus according to claim 1, wherein the moving member is suspended from the support portion above the connecting member connected to the upper side of the communication pipe.   The connecting member attaching / detaching device according to claim 2, wherein the moving member is a lever hoist.   The said support member consists of several shaft members standingly arranged along the pipe-axis direction of the said communicating pipe, The said support part is constructed by the said multiple shaft members. 4. The connecting member detaching device according to any one of 1 to 3.

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