JP2010043722A - Device for attaching/detaching pipe connecting member and method for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for attaching/detaching a pipe connecting member that allows attachment/detachment of a pipe connecting member and removes the remaining packing adhered to a flange on the side of a communication part after removing the existing packing without releasing the flange on the side of the communication part while allowing an existing fluid conduit to be in a constant flow state, and a method for the same. <P>SOLUTION: The device comprises a valve body 4 and a mounting member 5. The valve body is inserted into a gap 25 after forming the gap between opposing faces of a pair of flanges F1, F2 so as to hermetically seal a communication part B. The mounting member includes a valve-body storage part 13 for storing the valve body 4 while allowing the valve body to be operable from the outside. The mounting member is mounted to the pair of flanges F1, F2 in a sealed manner so as to form the gap 25 between the pair of flanges. The mounting member 5 includes a peeling-off member 17 that is inserted into the gap 25 between the pair of flanges F1, F2 so as to be operable from the outside and to peel off the remaining packing P' adhered to the flange F1 on the side of the communication part B. The peeling-off member 17 peels off the remaining packing P' adhered to the flange F1 on the side of the communication part B before the valve body 4 hermetically seals the communication part B. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is attached in a sealing manner to a pair of flanges coupled with a predetermined number of bolts via a packing between a communicating part communicating with an existing fluid pipe and a pipe connecting member connected to the communicating part, The present invention relates to a detaching apparatus for a pipe connecting member that seals the communicating portion between opposing surfaces of a pair of flanges and detaches the pipe connecting member in an uninterrupted state.

  Conventionally, when a pipe connection member such as an air valve or a repair valve connected to a communicating portion of an existing fluid pipe via a flange is detached from the existing fluid pipe for replacement or maintenance, In order to remove the pipe connecting member while maintaining the flow state, the connecting part and the pipe connecting member are covered in a water-tight manner by a desorption device equipped with a valve body, and between the opposing surfaces of the pair of flanges interposed between the communicating part and the pipe connecting member. In addition to separating, the valve body is inserted between the communication part and the pipe connection member to stop water on the communication part, and the existing pipe connection member is replaced with a new pipe connection member (for example, Patent Document 1).

JP 2008-51231 A (7th page, FIG. 5)

  However, in the method for attaching and detaching the pipe connecting member using the detaching device described in Patent Document 1, the communication part and the pipe connecting member are provided between the flange on the communicating part side and the flange on the pipe connecting member side. In order to make a watertight connection, a packing made of an elastic member such as rubber is provided, but a part of the packing that needs to be replaced due to deterioration or the like is separated when the pipe connecting member is separated from the communication portion. In order to replace the existing packing between the flange on the communication portion side and the flange on the pipe connection member side with a new packing, it may first remain on the flange on the communication portion side. There was a need to remove packing waste, but in order to remove this adhering packing waste from the flange on the communication part side, it was equipped with a water stop top that stopped water inside the communication part with the pipe connection member removed. Close Attach the device to the desorption device in a watertight manner, and stop the water inside the communication portion with a water stop top in a state where the communication portion is open, remove the components of the closure device and the desorption device except the water stop top, and After opening the flange, there was a problem that packing waste adhering to the flange on the communication side had to be removed.

  The present invention has been made paying attention to such a problem, and the packing waste adhering to the flange on the communication portion side is removed without opening the flange on the communication portion side while keeping the existing fluid pipe in an uninterrupted flow state. An object of the present invention is to provide a pipe connecting member detaching apparatus and method capable of removing the pipe connecting member while removing the pipe connecting member.

In order to solve the above-mentioned problem, a desorption device according to claim 1 of the present invention includes:
Between the communicating part communicating with the existing fluid pipe and the pipe connecting member connected to the communicating part, a pair of flanges coupled with a predetermined number of bolts via packing is sealed in a sealed manner. A decoupling device for a pipe connecting member that seals the communicating portion between opposing faces and desorbs the pipe connecting member in an uninterrupted flow state,
A valve body that is inserted after forming a gap between the opposing surfaces of the pair of flanges and seals the communicating portion;
A valve body housing portion that houses the valve body so that the valve body can be operated from the outside, and a mounting member that is attached in a sealed manner so that a gap can be formed between the pair of flanges.
The mounting member includes a peeling member that is inserted into a gap between the pair of flanges so as to be operable from the outside and peels off packing scraps attached to the flange on the communication part side,
The peeling member peels off packing scraps attached to the flange on the communication part side before the valve body seals the communication part.
According to this feature, the attachment member is provided in the gap between the pair of flanges, and includes a peeling member that peels off packing scraps attached to the flange on the communication portion side, so that the gap between the opposing surfaces of the pair of flanges is provided. After the seal member is inserted into the gap and the packing waste adhering to the flange on the communication part side is peeled off, the communication part can be sealed by the valve body, so the flange on the communication part side is opened and the packing waste is removed. The packing waste can be peeled off while attaching the mounting member to the pair of flanges without the need for peeling, and the communicating portion after the packing waste has been peeled can be reliably sealed.

A desorption device according to claim 2 of the present invention is the desorption device according to claim 1,
A through portion that penetrates both surfaces of the valve body is formed at a predetermined location of the valve body, and the valve body is attached to the flange on the side of the communication portion through the through portion at a position where the communication portion is closed. It is characterized in that the scraps of the packing can be exposed to the outside.
According to this feature, at the position where the valve body closes the communicating portion, the packing scrap attached to the flange on the communicating portion side can be exposed to the outside through the penetrating portion, so the packing scrap is removed through the penetrating portion. be able to.

A desorption device according to claim 3 of the present invention is the desorption device according to claim 1 or 2,
The mounting member includes an accommodating portion that accommodates packing scraps peeled off by the peeling member between the pair of flanges, and the peeling member is disposed in the accommodating portion, and the inside of the accommodating portion and the communication portion It is characterized by being movable between the flanges on the side.
According to this feature, after the packing waste adhering to the flange on the communication portion side is peeled off, the peeling member is pulled back into the housing portion, so that the packing waste can be drawn into the housing portion and stored. Not only can the valve element inserted after the scrap is peeled off interfere with the peeled packing scrap, but also the packing scrap can be prevented from flowing into the existing fluid pipe.

A desorption device according to claim 4 of the present invention is the desorption device according to any one of claims 1 to 3,
The attachment member is characterized in that a window portion through which packing waste adhering to the flange on the communication portion side can be visually recognized can be mounted instead of the pipe connection member.
According to this feature, the window portion through which the packing scrap attached to the flange on the communication portion side can be visually recognized is mounted on the side facing the flange surface on the communication portion side, instead of the pipe connection member. The packing waste adhering to the flange on the side can be visually recognized over the entire flange surface and the packing waste can be reliably peeled off.

A desorption device according to claim 5 of the present invention is the desorption device according to any one of claims 1 to 4,
The valve body has a removal portion that removes packing waste remaining on the flange on the communication portion side by being inserted into a gap between the pair of flanges.
According to this feature, even if packing waste may remain on the flange on the communication part side after the packing scrap is peeled off by the peeling member, the insertion of the valve body into the gap is used to insert the valve body into the gap. The removal part can remove packing scraps remaining on the flange.

A method for attaching and detaching a pipe connecting member according to claim 6 of the present invention comprises:
Between the communicating part communicating with the existing fluid pipe and the pipe connecting member connected to the communicating part, a pair of flanges coupled with a predetermined number of bolts via packing is sealed in a sealed manner. A method of detaching a pipe connecting member that seals the communicating portion between opposing surfaces and detaches the pipe connecting member in an uninterrupted flow state,
A valve body that is inserted after forming a gap between the opposing surfaces of the pair of flanges and seals the communicating portion;
A valve body storage portion that stores the valve body so as to be operable from the outside, and an attachment member that is attached in a sealed manner so that a gap can be formed between the pair of flanges,
The mounting member includes a peeling member that is inserted into a gap between the pair of flanges so as to be operable from the outside and peels off packing scraps attached to the flange on the communication part side,
An attachment step of attaching the attachment member to the pair of flanges in a sealed manner;
After the mounting step, a gap forming step of loosening the bolt to form a gap between the opposing surfaces of the pair of flanges;
After the gap forming step, a peeling step of peeling packing waste adhering to the flange on the communication part side by inserting the peeling member into the gap;
A sealing step of sealing the communicating portion by inserting the valve body into the gap after the peeling step;
After the said sealing process, it is comprised from the desorption process which desorbs | detaches a pipe connection member, It is characterized by the above-mentioned.
According to this feature, the mounting member is provided in the gap forming step after the mounting step by including the peeling member that is inserted into the gap between the pair of flanges and peels off the packing scrap attached to the flange on the communication portion side. A gap is formed between the opposing surfaces of a pair of flanges, a peeling member is inserted into the gap in the peeling process, and the packing scrap attached to the flange on the communicating part side is peeled off, and then the communicating part is sealed with a valve body in the sealing process This eliminates the need to open the flange on the side of the communication part and peel off the packing waste. Can be sealed.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out a pipe connecting member detaching apparatus and method 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 in an embodiment of the present invention are attached to an existing fluid pipe through a communication portion. FIG. 2 is a front view showing a state where work bolts and nuts and a water stop plate are attached between the flanges, and FIG. 3A is a plan view showing a state where the water stop plate is attached to the flange. 3 (b) is a partially broken AA cross-sectional view in FIG. 3 (a), and FIG. 4 shows the desorption device sealed between the flange on the communication portion side and the flange on the repair valve side. FIG. 5 is a partially broken plan view showing the configuration of the desorption device, FIG. 6 is a sectional view taken along the line CC in FIG. 5, and FIG. Partial breakage showing a state where the flange on the communication side and the flange on the repair valve side are separated FIG. 8 is an enlarged cross-sectional view showing a state where the communication portion is closed by the valve body, and FIG. 9 is an enlarged cross-sectional view showing a state where the air valve and the repair valve are removed from the communication portion. FIG. 10 is a partially broken plan view showing a state in which the air valve and the repair valve are removed from the communication portion, and FIG. 11 is a plan view showing a state in which the window portion is attached to the attachment member. FIG. 12 is a cross-sectional view showing a state in which packing waste is peeled off by the peeling member, FIG. 13 is a partially broken plan view showing a state in which packing waste is peeled off by the peeling member, and FIG. FIG. 15 is an enlarged cross-sectional view showing a state in which packing waste is removed, FIG. 15 is an enlarged cross-sectional view showing a state in which the communication portion is sealed by a valve body, and FIG. 16 shows a communication portion with a new air valve and a repair valve. It is a front view which shows the state attached to. In the following, the front side of the paper surface in FIGS. 1 to 3A, 4, 6 to 12, and 14 to 16 is the front (front surface) side of the desorption device, and the back side of the paper surface is the rear side, and FIG. b) In FIG. 5, FIG. 10, and FIG. 13, the lower side of the paper surface will be described as the front (front surface) side of the desorption device, and the upper side of the paper surface will be described as the rear side.

  Reference numeral 1 in FIG. 1 is an existing fluid pipe in which a fluid such as tap water flows in the pipe. Above the existing fluid pipe 1, a communication portion B communicating with the inside of the existing fluid pipe 1 is provided so as to protrude upward. In addition, an air valve AV1 is attached to the communication part B via a repair valve V1.

  Specifically, a pair of seats Z2 of the flange F2 of the repair valve V1 is connected to the seat Z1 of the flange F1 of the communication part B through the packing P in a water-tight manner (see FIG. 3B). The seat of the flange F4 of the air valve AV1 is connected in a watertight manner to the seat of the flange F3 of the repair valve V1 through a packing. The air valve AV1 is a member for releasing the air in the existing fluid pipe 1 to the outside of the pipe and preventing negative pressure in the existing fluid pipe 1. The repair valve V1 is a member of the air valve AV1. This is a member for temporarily opening and closing the flow from the communication portion B when repairing, adjusting, etc., and this repair valve V1 constitutes a pipe connecting member in the present invention.

  However, when the repair or adjustment of the air valve AV1 becomes impossible due to a failure of the repair valve V1 or the like, and it becomes necessary to replace the repair valve V1 itself, the apparatus and method for attaching and detaching a pipe connection member of the present invention are provided. Adopted.

  Next, a desorbing device for a pipe connecting member for desorbing a repair valve as a pipe connecting member and its method will be described.

  First, as shown in FIG. 1, the flange F2 of the repair valve V1 connected to the flange F1 and the flange F1 of the communicating portion B by four existing bolts and nuts BN1 at equal intervals is cleaned, and the flange Check the status of F1 and F2. If there are irregularities that adversely affect the sealing of the packing, etc., repair them, then remove the bolts and nuts BN1 from the flanges F1 and F2 one by one, and install new work bolts and nuts BN2. As shown, all bolts and nuts BN1 are replaced with working bolts and nuts BN2. At this time, the bolts and nuts are removed and attached one by one, and the remaining three bolts and nuts are attached to the flanges F1 and F2. Watertightness between the flanges F1, F2 is maintained by three bolts and nuts.

  When the bolt / nut BN1 is replaced with the working bolt / nut BN2, the water stop plate 2 as the plate member in the present invention shown in FIG. 3A is attached to the flange F2.

  As shown in FIGS. 3A and 3B, the water stop plate 2 is formed in an annular shape having a slightly larger diameter than the flanges F1 and F2, and is a bolt connecting the flanges F1 and F2. -It has the division structure divided | segmented into the four fan-shaped plate pieces 2a which are the same number as nut BN1. Each plate piece 2a is provided with a bolt hole 2b for inserting a work bolt / nut BN2. The plate piece 2a is inserted into the flange F2 by the work bolt / nut BN2 one by one through the bolt hole 2b. Can be attached to.

  In this way, when the water stop plate 2 is attached to the flange F2, the connection between the flanges F1 and F2 can be maintained by any three of the bolt / nut BN1 and the work bolt / nut BN2. ing.

  Further, a groove portion 2c is formed on the outer peripheral side surface of the water stop plate 2 over the entire circumference in the circumferential direction of the water stop plate 2, and an annular sealing rubber 2e is fitted into the groove portion 2c. It has become so.

  Similarly, a notch 2d is formed in the lower part of the water stop plate 2 over the entire circumference in the circumferential direction. With the water stop plate 2 attached to the flange F2, the notch 2d and the upper peripheral edge of the flange F2 The sealing rubber 2e is fitted into the groove formed in (1).

  Although not particularly illustrated, a packing is attached to the divided end surface of each plate piece 2a to prevent water leakage between the plate pieces 2a when the water stop plate 2 is attached to the flange F2.

  As shown in FIG. 3B, the working bolt / nut BN2 is composed of nuts N and N, a bolt BL, and a washer W. The nut N is screwed with a bolt BL on the inner peripheral surface. An insertable female screw is screwed. Further, even if a predetermined gap 25 (described later) is formed between the flanges F1 and F2 (see FIG. 7), the bolt BL has a length enough to engage with the female thread of the nut N, and the flanges F1 and F2 In the inserted state, the flanges F1 and F2 are connected in a watertight manner by screwing a washer W and a nut N from above and below, respectively.

  The washer W includes an annular packing for sealing, and a metal washer that covers the outer peripheral surface and one plane of the packing. The same packing is also attached to the water stop plate 2. Therefore, by replacing the bolt / nut BN1 with the working bolt / nut BN2, water leakage from the bolt connection holes of the flanges F1, F2 is prevented by the packing of the upper and lower washers W.

  Then, as described above, after the water stop plate 2 is attached to the flange F2 by connecting the flanges F1 and F2 with the working bolts and nuts BN2, as shown in FIG. The desorption device 3 of the invention is attached in a sealed manner. This desorption device 3 seals the communication part B between the opposing flanges F1 and F2, thereby detaching the air valve and the repair valve while keeping the existing fluid pipe 1 in an uninterrupted flow state as will be described later.

  Here, the configuration of the desorption device 3 will be described in detail.

  As shown in FIGS. 4 and 5, the detaching device 3 peels off the valve body 4 for sealing the seat Z1 of the flange F1 of the communication portion B and the packing scrap described later from the seat Z1 of the flange F1 of the communication portion B. And a mounting member 5 attached in a sealed manner so as to form a gap between the pair of flanges F1 and F2. Furthermore, the attachment member 5 includes a first divided portion 3a including a valve body storage portion 13 in which the valve body 4 is stored, and a storage portion 20 that is connected to the first divided portion 3a and stores packing scraps described later. The second division unit 3b. Among these, both the 1st division | segmentation part 3a and the 2nd division | segmentation part 3b are formed in the planar view substantially semicircle.

  The front and rear end portions of the first divided portion 3a are provided with hooking portions 3c and 3c for inserting the connecting bolt / nut BN3. The front and rear end portions of the second divided portion 3b are provided with the first divided portion. Similar to 3a, latching portions 3d and 3d for inserting the connecting bolt / nut BN3 are provided.

  Then, the front and rear end portions of the first divided portion 3a and the front and rear end portions of the second divided portion 3b are brought into contact with each other, and the connecting bolt / nut BN3 is inserted between the front and rear hooking portions 3c and 3d. The division part 3a and the second division part 3b are connected to each other, and the attachment / detachment device 3 is attached between the flanges F1, F2. At this time, the first divided portion 3a and the second divided portion 3b are connected to constitute the attachment member 5 in the present invention having a substantially annular shape in plan view.

  In addition, packing is attached to the front and rear end surfaces of the first divided portion 3a and the second divided portion 3b that are in contact with each other over the entire length in the vertical direction, and both packings are tightened to the connecting bolt / nut BN3. Water leakage from between the first divided portion 3a and the second divided portion 3b is prevented.

  Further, the inner side of the attachment member 5 is formed in an inner wall portion 3e formed to have a slightly larger diameter than the water stop plate 2 along the outer periphery of the flanges F1 and F2. A packing P2 is provided at the lower portion of the inner wall 3e over the entire circumference of the inner wall 3e, and the packing P2 is divided into a first divided portion 3a side and a second divided portion 3b side.

  Projecting pieces 6, 6 are extended from the lower end portion of the attachment member 5 toward the direction of diameter reduction of the attachment member 5. These projecting pieces 6 and 6 are formed with screw holes 6a and 6a in the front and rear. Further, a support bolt 7 is screwed into each screw hole 6a from below.

  A plurality of insertion pieces 8 and gap forming pieces 9 are extended on the inner wall 3 e of the attachment member 5 in the direction of the diameter reduction of the attachment member 5. The end portions on the inner diameter side of the attachment member 5 of the insertion piece 8 and the gap forming piece 9 have a thickness that can be inserted between the opposed surfaces of the connected flanges F1 and F2. For this reason, when attaching / detaching the desorption device 3 to the flanges F1, F2, the inner diameter side ends of the communicating piece 8 and the gap forming piece 9 are inserted between the opposing surfaces of the flanges F1, F2, thereby positioning the desorption device 3. It is to be made.

  In particular, as shown in FIG. 6, the gap forming piece 9 is a plate body that is formed in a substantially square shape that is bent at a substantially central portion when viewed from the side, and is arranged in the radial direction of the mounting member 5. It is pivotally supported by a support rod 10 provided inside, and the outer diameter side end of the gap forming piece 9 is pressed downward, so that the gap forming piece 9 The inner diameter side end is pivotable upward.

  An insertion hole 11 is formed above the outer diameter side end of the gap forming piece 9. An operation bolt 12 that presses the outer diameter side end of the gap forming piece 9 from above is screwed into the insertion hole 11. It is inserted. Packing is wound around the heads of these operation bolts 12 to prevent water leakage from the insertion holes 11.

  As shown in FIGS. 4 and 5, the valve body 4 is provided in a valve body storage portion 13 provided in the attachment member 5. Specifically, the valve body storage portion 13 is formed in a rectangular shape in plan view and is provided in the first divided portion 3a, and the inside of the valve body storage portion 13 is communicated with the inner wall portion 3e of the mounting member 5. A storage space 14 for storing the valve body 4 is formed.

  The valve body 4 stored in the storage space 14 is a substantially rectangular plate having a front-rear width dimension that is longer than the diameter of the communication portion B. As shown in FIG. 5, a handle 16 that is operated from the outside of the valve body storage portion 13 is connected to the right end portion of the valve body 4 through a communication hole 15 formed on the right side surface of the valve body storage portion 13. The valve body 4 is sealed by the handle 16 between a sealing position for sealing the communication portion B (a chain line shown in FIG. 5) and a storage position (the solid line and dotted line shown in FIG. 5) stored in the storage space 14. It can be operated between.

  Since the diameter of the communication hole 15 is slightly larger than the diameter of the handle 16 inserted through the communication hole 15, when the valve body 4 is operated in the left-right direction, the diameter is increased in the up-down direction and the front-rear direction. The valve body 4 can be slightly inclined. The communication hole 15 is provided with a packing to prevent water leakage from the communication hole 15.

  At the left end of the valve body 4 shown in the drawing, when the communication part B is sealed by the valve body 4, a removal part 17 is formed for removing packing waste remaining on the flange F1 from the flange F1, as will be described later. . As shown in FIG. 4, the removal portion 17 includes a taper portion 17 a that is inclined leftward from the upper surface to the lower surface side of the valve body 4, and slightly upward from the left lower end portion of the valve body 4. The hooking portion 17b is extended and has a tip formed at an acute angle.

  Further, the lower surface of the valve body 4 is covered with an elastic seal member, although not particularly shown. As shown in FIG. 6, a sealing recess 18 is formed in the approximate center of the lower surface of the valve body 4 from below, and the flange F1 is disposed in a state where the valve body 4 is disposed at the sealing position as will be described later. The communication part B is sealed by the valve body 4 by the upper surface of the seat Z1 coming into contact with the lower surface of the sealing recess 18. Note that the lower surface of the valve body is not necessarily limited to the one in which the sealing recess 18 is provided, and may be planar.

  As shown in FIG. 5, the valve body 4 is formed with a total of four through portions 27 penetrating from the upper surface to the lower surface. Specifically, each through portion 27 is formed on the left and right side portions of the sealing recess 18 that is a portion that does not hinder the sealing of the communication portion B when the valve body 4 is disposed at the sealing position. When the body 4 is disposed at the sealing position, a part of the seat Z1 of the flange F1 is exposed upward through these through portions 27 (see FIG. 10).

  A drain valve 19 communicating with the inside of the storage space 14 is provided at the upper part of the valve body storage portion 13. By opening the drain valve 19, the air and tap water in the storage space 14 are desorbed. 3 can be discharged to the outside.

  Further, as shown in FIGS. 4 and 5, when the valve body 4 is disposed at the sealing position, the valve body 4 is separated from the seat Z1 of the flange F1 of the communication portion B as described later. The accommodating part 20 which accommodates the performed packing waste is provided. In detail, the accommodating part 20 is formed in a rectangular shape in plan view, and faces the valve element accommodating part 13 provided on the front side in the insertion direction in which the valve element 4 is inserted, that is, the first divided part 3a. The second dividing unit 3b is provided.

  The inside of the accommodating part 20 is formed in the accommodating space 21 for accommodating packing waste peeled off by the valve body 4, and the tip part of the valve body 4 arranged at the sealing position is arranged. Yes.

  In the attachment member 5, two through holes 23, 23 are formed in the upper portion of the valve body 4 disposed at the sealing position on the valve body storage portion 13 side and the storage portion 20 side, respectively. Fixing bolts 24 are screwed into these through holes 23, and the upper surface of the valve body 4 arranged at the sealing position is pressed by the lower surface of the fixing bolt 24 to fix the valve body 4 at the sealing position. Can be done.

  In addition, communication holes 22 and 22 that communicate with the outside are provided at the front and rear of the left end of the housing portion in the figure. Operation rods 26a and 26a are inserted into the communication holes 22 and 22 from the outside, and packing scraps, which will be described later, are peeled off from the seat Z1 of the flange F1 at the distal end of the operation rods 26a and 26a on the second divided portion 3b side. In order to achieve this, peeling pieces 26b, 26b, which are formed at an acute angle with the tip directed downward, are attached. The operation member 26a and the release piece 26b constitute a release member 26 in the present invention, and the release piece 26b is disposed in the accommodation space 21.

  As shown in FIG. 13, these peeling pieces 26b are movable between the inside of the accommodation space 21 and the flange F1 on the communication part B side by an operating rod 26a. Specifically, an elastic seal member is provided on the inner peripheral surface of the communication hole 22, and the operation rod 26a can be inclined with respect to the hole axis of the communication hole 22 in a watertight state. The peeling piece 26b can be moved while being inclined.

  Next, desorption of the pipe connecting member using the desorption apparatus 3 will be described in the order of steps.

  First, the attachment process will be described. As described above, as shown in FIG. 4, the flanges F1 and F2 are installed from the state in which the water stop plate 2 and the sealing rubber 2e are attached to the flange F2 together with the replacement of the working bolts and nuts BN2. Attach the desorption device 3 to. First, the insertion piece 8 and the gap forming piece 9 of the first divided portion 3a are inserted between the opposing surfaces between the flanges F1 and F2.

  Then, the insertion piece 8 and the gap forming piece 9 of the second divided portion 3b are inserted between the opposing surfaces between the flanges F1 and F2, and connected to the latching portions 3c and 3c of the first divided portion 3a and the second divided portion 3b. By inserting and tightening the bolt and nut BN3, the detaching device 3 is attached to the flanges F1 and F2.

  At this time, the sealing rubber 2e, 2e abuts against the inner wall 3e of the mounting member 5 over the entire circumference, and the packing P2 abuts against the flange F1 over the entire circumference. Sealed above and below F2. Further, by rotating the support bolt 7 from below toward the flange F1, the support bolt 7 is brought into contact with the lower surface of the flange F1, and the upward movement of the detaching device 3 is restricted. Moreover, the above-mentioned insertion piece 8 is made to contact | abut to the upper surface of the flange F1, and the downward movement of the removal | desorption apparatus 3 is controlled. That is, both sides of the flange F <b> 1 are narrowed by the support bolt 7 and the insertion piece 8.

  Next, the gap forming step will be described. After loosening the working bolts and nuts BN2 one by one by a predetermined pitch amount, the gap 25 is formed between the flanges F1 and F2. Specifically, as shown in FIGS. 6 and 7, by rotating each operation bolt 12, the inner diameter side end portion of the gap forming piece 9 is rotated upward. More specifically, the support rod 10 is used as a fulcrum, the outer diameter side end of the gap forming piece 9 is used as a force point, and the inner diameter side end of the gap forming piece 9 is applied as an action point according to the principle of the insulator, and the flange F2 faces upward. The air valve AV1 and the repair valve V1 are lifted upward, and a gap 25 is formed between the opposing surfaces of the flanges F1 and F2.

  At this time, the packing P in which the seat Z1 of the flange F1 and the seat Z2 of the flange F2 are connected in a watertight manner is formed with the gap 25, so that at least a part of the packing P adheres to the seat Z1 of the flange F1. 'Become.

  Moreover, when performing this gap | interval formation process, the drain valve 19 is opened beforehand, and the air in the desorption apparatus 3 and the tap water which flows in into the desorption apparatus 3 from the gap | interval 25 are replaced. Then, on the condition that the tap water is discharged from the drain valve 19, the drain valve 19 is closed in a state where the tap water is filled in the desorption device 3.

  Further, when the drain valve 19 is closed, the repair valve V1 is directed upward by tap water, but the upward movement of the air valve AV1 and the repair valve V1 is a pitch at which the work bolt / nut BN2 is loosened. It is regulated by the amount.

  Since the sealing rubbers 2e and 2e fitted to the water stop plate 2 rise while sealing between the flange F2 and the inner wall 3e, for example, seal between the flange F2 and the inner wall 3e. Therefore, it is not necessary to stick a water stop sheet or the like to the maximum rising position of the flange F2 corresponding to the width dimension of the gap 25 over the entire circumference of the inner wall portion 3e, and the manufacturing cost of the desorption device 3 can be suppressed.

  Next, the valve body insertion process will be described. As shown in FIG. 7, the state in which the repair valve V <b> 1 is lifted by the gap forming piece 9 is maintained, and the communication portion B is closed by the valve body 4. Specifically, first, the valve body 4 is inserted between the gaps 25 toward the sealing position by pushing the handle 16 in the left direction in the figure.

  At this time, the valve body 4 is inserted between the gaps 25 to the sealing position while riding on the seat Z1 slightly raised from the flange F1.

  As shown in FIG. 8, when the valve body 4 is arranged at the sealing position, the fixing bolt 24 is screwed in from above with the lower surface of the sealing recess 18 abutting against the seat Z1 of the flange F1. Thus, the lower surface of the fixing bolt 24 comes into contact with the upper surface of the valve body 4 and presses the valve body 4 against the seat Z1 to which the flange F1 and the packing scrap P ′ adhere. For this reason, the valve body 4 is closed at the communication portion B by the fixing bolt 24 and is fixed at the sealing position.

  Then, as shown in FIG. 9, as a replacement process, all the working bolts and nuts BN2 are removed from the flanges F1 and F2, and the repair valve V1 is lifted upward while the sealing rubbers 2e and 2e are in sliding contact with the inner wall 3e. Then, the repair valve V1 is completely removed from the communication part B.

  At this time, as shown in FIG. 10, a part of the packing scrap P ′ pressed by the valve body 4 is exposed upward by the through portion 27 formed in the valve body 4. For this reason, by using a spatula or the like, a part of the packing waste P ′ located below the valve body 4 can be peeled off in advance through the through portion 27. Furthermore, packing scraps P 'at locations where the valve body 4 is not pressed before and after the valve body 4 can be similarly peeled off.

  As shown in FIG. 11, a window portion 28 is attached to the attachment member 5 with the communication portion B closed from the top instead of the repair valve V1. As shown in FIG. 13, the window portion 28 is formed of a ring-shaped window frame portion 28a and a light-transmitting resin, glass, or the like that is watertightly fitted in the center of the window frame portion 28a. 28b, and is attached to the mounting member 5 by tightening four locations of the window frame portion 28a with a flange F1 and a work bolt / nut BN2.

  Thus, by attaching the window part 28 to the attachment member 5, the packing waste P 'adhering to the flange F1 can be visually recognized through the translucent panel 28b. In addition, the packing which contacts the inner wall part 3e of the attachment member 5 over the entire circumference is wound around the outer peripheral surface of the window part 28, and water leakage from between the window part 28 and the attachment member 5 is prevented. ing.

  Next, as shown in FIG. 12, as shown in FIG. 12, after the window portion 28 is attached to the attachment member 5, the packing scrap P ′ attached to the flange F <b> 1 is peeled off by the peeling member 26. Specifically, first, the fixing bolt 24 fixing the valve body 4 is screwed out to release the fixing of the valve body 4 at the sealing position. And the valve body 4 is accommodated in the valve body accommodating part 13 with the handle | steering-wheel 16, and the communication part B is open | released. At this time, although not particularly illustrated, by slightly opening the drain valve 19 described above, the inside of the communication part B is lifted from the existing fluid pipe 1 and then passes through the valve body storage part 13 to the outside from the drain valve 19. Generates a gentle stream of drained water.

  In this state, by pushing the front and rear operating rods 26a, the peeling pieces 26b, 26b of the peeling members 26, 26 are inserted into the gap 25 formed between the window portion 28 and the flange F1, and the flange F1 Move upward. Then, as shown in FIGS. 12 and 13, by operating the operation bars 26a, 26a from above the mounting member 5 through the translucent panel 28b of the window portion 28 while visually checking the positions of the peeling pieces 26b, 26b. The packing waste P ′ is peeled off, and the peeled packing waste P ′ is accommodated in the accommodating space of the accommodating portion 20.

  As described above, since a gentle water flow is generated from the existing fluid pipe 1 to the drain valve 19 in the mounting member 5, the packing scrap P ′ peeled off by the peeling pieces 26 b and 26 b is contained in the communication part B. Is prevented from falling into the existing fluid pipe 1.

  Then, as a sealing step, as shown in FIG. 15, the handle 16 accommodated in the valve body accommodating portion 13 is pushed in toward the left in the figure, whereby the valve body 4 is again directed to the sealed position and the gap 2 Insert between them.

  At this time, as shown in FIG. 14, by inserting the valve body 4 into the gap 25, even if packing scrap P ′ remains on the seat Z <b> 1 of the flange F <b> 1, the packing in which the tip of the hooking portion 17 b of the removing portion 17 remains. The remaining packing waste P ′ is removed by hooking on the waste P ′ and pushing the handle 16 in the left direction as it is. When the valve body 4 is disposed at the sealing position, the removed packing waste P ′ is accommodated in the accommodating portion 20 by disposing the removing portion 17 of the valve body 4 in the accommodating portion 20. Part of the packing scrap P ′ may not be accommodated in the accommodating portion 20, and may be placed on the upper surface of the valve body 4 through the tapered portion 17 a after being placed on the seat Z <b> 1 of the flange F <b> 1.

  As shown in FIG. 15, the valve body 4 arranged at the sealing position is screwed into the fixing bolt 24 from above with the lower surface of the sealing recess 18 in contact with the seat Z1 of the flange F1. The lower surface of the fixing bolt 24 comes into contact with the upper surface of the valve body 4 and presses the valve body 4 against the flange F1 and the seat Z1. Therefore, the valve body 4 is sealed at the communication portion B by the fixing bolt 24 and is fixed at the sealing position.

  After the sealing process, as a detaching process, all the working bolts and nuts BN2 are removed from the flange F1 and the window part 28, and the window part 28 is lifted upward while sliding the packing of the window part 28 against the inner wall part 3e. The window part 28 is removed from the attachment member 5, and it is set as the substantially same state as FIG.

  As shown in FIG. 16, in order to attach the new air valve AV2 and the repair valve V2 to the communication part B, first, the repair valve V2 is closed, and a new packing P3 is attached to the seat of the flange F5 of the repair valve V2. wear. And after inserting the flange F5 of the repair valve V2 with respect to the removal | desorption apparatus 3 with which the communication part B is sealed by the valve body 4 shown in FIG. 9, the water stop plate 2 and sealing rubber 2e, 2e are inserted in the flange F5. After inserting the working bolt / nut BN2 through the flanges F1 and F5, the bolt BL is tightened to a predetermined position.

  Further, after loosening the fixing bolt 24 to release the fixing at the sealing position, the handle 16 is pulled in the right direction so that the valve body 4 is disposed at the storage position in the valve body storage portion 13. The operation bolt 12 is screwed to rotate the inner diameter side end of the gap forming piece 9 downward.

  Then, by tightening the work bolt / nut BN2, the seat of the flange F1 of the communication portion B and the seat of the flange F5 of the repair valve V2 are connected in a water-tight manner through the packing P3, and the drain valve 19 Is opened and the watertight state is confirmed, and then the connecting bolt / nut BN3 connecting the first divided portion 3a and the second divided portion 3a is removed, so that the detaching device 3 is separated from the first divided portion 3a and the second divided portion. It divides | segments into the part 3b and removes from the flanges F1 and F5.

  In order to attach the air valve AV2 to the repair valve V2, after attaching a gasket to the seat of the flange F7 of the air valve AV2, the seat of the flange F7 of the repair valve V2 is placed on the seat of the flange F7 of the repair valve V2. The flanges F6 and F7 are tightened with bolts and nuts BN1 so that the seat of the flange F7 of the air valve AV2 is watertightly connected to the seat of the flange F6 of the repair valve V2.

  Finally, the working bolts and nuts BN2 connecting the flanges F1 and F5 are sequentially replaced with bolts and nuts BN1 one by one, and the water stop plate 2 is removed from the flange F5. As described above, as shown in FIG. 10, the attachment of the air valve AV2 and the repair valve V2 is completed. Therefore, the air valve AV2 can be used by opening the repair valve V2 by operating the handle of the repair valve V2.

  As described above, the attachment member 5 includes the peeling member 26 that is inserted into the gap 25 between the pair of flanges F1 and F2 and peels off the packing waste P ′ attached to the flange F1 on the communication part B side. A gap 25 is formed between the opposing surfaces of F1 and F2, a peeling member 26 is inserted into the gap 25, and after the packing scrap P ′ adhering to the flange F1 on the communication part B side is peeled off, the communication part is connected by the valve body 4. Since B can be sealed, the packing waste P 'is peeled off while the mounting member 5 is attached to the pair of flanges F1 and F2 without the need to open the flange F1 on the communication part B side and peel off the packing waste P'. The communication part B after peeling packing dust P 'can be reliably sealed.

  Further, through portions 27 penetrating both surfaces of the valve body 4 are formed at predetermined positions of the valve body 4, and at the position where the valve body 4 closes the communication portion B, the through portion 27 passes through the communication portion B side. Since the packing scrap P ′ attached to the flange F1 can be exposed to the outside, the packing scrap P attached to the flange F1 on the communication portion B side through the through portion 27 at the position where the valve body 4 closes the communication portion B. Since 'can be exposed to the outside, this packing waste P' can be removed through the through portion 27.

  Further, since the peeling member 26 is disposed in the housing portion 20 and can move between the housing portion 20 and the flange F1 on the communication portion B side, the packing adhered to the flange F1 on the communication portion B side. After the scrap P ′ is peeled off, the packing scrap P ′ can be pulled into the accommodating portion 20 and accommodated by pulling the peeling member 26 back into the accommodating portion 20, so that the packing scrap P ′ is peeled off. Not only can the valve body 4 to be inserted later interfere with the peeled packing waste P ′ but also the packing waste P ′ can be prevented from flowing into the existing fluid pipe 1.

  Moreover, the window part 28 which can visually recognize the packing waste P 'adhering to the flange F1 on the communication part B side can be attached to the mounting member 5 instead of the repair valve V1, so that the flange on the communication part side can be mounted. The window portion 28 through which the packing scrap P ′ attached to the surface can be visually recognized is mounted on the side facing the seat Z1 of the flange F1 on the communication portion B side instead of the repair valve V1, so that the flange on the communication portion B side The packing scrap P ′ adhering to F1 can be visually recognized over the entire area of the seat Z1, and the packing scrap P ′ can be reliably peeled off.

  Moreover, since the valve body 4 has the removal part 17 which removes packing waste P 'which remained in the flange F1 by the side of the communication part B by inserting in the clearance gap 25 of a pair of flanges F1 and F2, it peels. After the packing scrap P ′ is peeled off by the member 26, even if the packing scrap P ′ may remain on the flange F1 on the communication portion B side, the valve body 4 is inserted into the gap 25 using the insertion operation. The packing scrap P ′ remaining on the flange F1 can be removed by the removing portion 17 of the body 4.

  Further, the attachment member 5 includes a peeling member 26 that is inserted into the gap 25 between the pair of flanges F1 and F2 and peels off the packing waste P ′ attached to the flange F1 on the communication part B side. After that, a gap 25 is formed between the opposing surfaces of the pair of flanges F1 and F2 in the gap forming process, and the peeling member 26 is inserted into the gap 25 in the peeling process, and the packing scrap P adhered to the flange F1 on the communication part B side. Since the communication part B can be sealed by the valve body 4 in the sealing process after peeling ', the pair of flanges F1, F1 are not required to open the flange F1 on the communication part B side and peel off the packing waste P'. The packing waste P ′ can be peeled off while the attachment member 5 is attached to F2, and the communication portion 5 after the packing waste P ′ has been peeled off can be reliably sealed.

  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-described embodiment, the repair valve V1 to which the air valve AV1 is connected is connected to the communication part B, and the desorption device 3 is attached between the flange F1 of the communication part B and the flange F2 of the repair valve V1, and the air valve Although AV1 and repair valve V1 were attached, in order to remove air valve AV1 directly connected to communication part B, attachment / detachment device 3 is attached between flange F1 of communication part B and flange F4 of air valve AV1. It may be.

  Moreover, in the said Example, the drain valve 19 is provided in the valve body storage part 13, and when peeling the packing waste P 'with the peeling member 26, the drain valve 19 is open | released, From the existing fluid pipe | tube 1, inside the communicating part B After passing through the valve body housing part 13, a water flow is generated which is drained to the outside from the drain valve 19, and the packing scrap P ′ peeled off from the seat Z 1 of the flange F 1 falls inside the communication part B. Although it prevents entry into the existing fluid pipe 1, for example, a drain valve is provided in the housing portion 20, and the drain valve is opened when the packing scrap P ′ is peeled off by the peeling member 26. After the inside of the communication part B is lifted, the peeled packing waste P ′ falls through the communication part B by passing through the housing part 20 and draining to the outside from the drain valve, and the existing fluid In addition to preventing entry into the pipe 1, May be able to induce in the receiving portion 20 has been packing scrap P 'peeled I.

  Moreover, in the said Example, although the front-end | tip of the peeling piece 26b was formed in the acute angle toward the downward direction in order to peel packing waste P ', for example, the front-end | tip of the peeling piece 26b was made into the acute angle inclined toward the accommodating part 20 side. By forming, the operation rod 26a may be pulled in the left direction so as to make it easy to bite into the packing waste P 'and to make it easier to peel off the packing waste P'.

It is a front view which shows the state in which the air valve and repair valve in the Example of this invention are attached to the existing fluid pipe | tube via a communication part. It is a front view which shows the state which attached the working volt | bolt nut and the water stop plate between the flanges. (A) is a top view which shows the attachment state to the flange of a water stop plate, (b) is a partially broken AA sectional drawing in Fig.3 (a). It is a partially broken front view which shows the state which attached the removal | desorption apparatus sealingly between the flange by the side of a communication part, and the flange by the side of a repair valve. It is a partially broken top view which shows the structure of a desorption apparatus. It is CC sectional drawing in FIG. It is a partially broken BB sectional view showing the state where the flange by the side of a communicating part and the flange by the side of a repair valve were separated. It is an expanded sectional view which shows the state which closed the communication part with the valve body. It is an expanded sectional view which shows the state which removed the air valve and the repair valve from the communication part. It is a partially broken top view which shows the state which removed the air valve and the repair valve from the communication part. It is a top view which shows the state by which the window part was attached to the attachment member. It is sectional drawing which shows the state which peels packing waste with a peeling member. It is a partially broken top view which shows the state which peels packing waste with a peeling member. It is an expanded sectional view which shows the state from which packing waste is removed by the removal part. It is an expanded sectional view which shows the state which sealed the communication part with the valve body. It is a front view which shows the state which attached the new air valve and the repair valve to the communication part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Existing fluid pipe | tube 3 Desorption apparatus 4 Valve body 5 Attachment member 13 Valve body accommodating part 16 Handle 17 Removal part 20 Accommodating part 21 Accommodating space 25 Gap 26 Peeling member 27 Penetration part 28 Window part V1, V2 Repair valve (pipe connection member)
F1, F2 Flange BN1 Bolt / Nut BN2 Work Bolt / Nut P Packing P 'Packing waste

Claims (6)

Between the communicating part communicating with the existing fluid pipe and the pipe connecting member connected to the communicating part, a pair of flanges coupled with a predetermined number of bolts via packing is sealed in a sealed manner. A decoupling device for a pipe connecting member that seals the communicating portion between opposing faces and desorbs the pipe connecting member in an uninterrupted flow state,
A valve body that is inserted after forming a gap between the opposing surfaces of the pair of flanges and seals the communicating portion;
A valve body housing portion that houses the valve body so that the valve body can be operated from the outside, and a mounting member that is attached in a sealed manner so that a gap can be formed between the pair of flanges.
The mounting member includes a peeling member that is inserted into a gap between the pair of flanges so as to be operable from the outside and peels off packing scraps attached to the flange on the communication part side,
The debonding device for a pipe connecting member, wherein the peeling member peels off packing dust adhering to the flange on the communication portion side before the valve body seals the communication portion.   A through portion that penetrates both surfaces of the valve body is formed at a predetermined location of the valve body, and the valve body is attached to the flange on the side of the communication portion through the through portion at a position where the communication portion is closed. The apparatus for removing and attaching a pipe connecting member according to claim 1, wherein the packing waste that has been removed can be exposed to the outside.   The mounting member includes an accommodating portion that accommodates packing scraps peeled off by the peeling member between the pair of flanges, and the peeling member is disposed in the accommodating portion, and the inside of the accommodating portion and the communication portion The pipe connecting member attaching / detaching device according to claim 1, wherein the pipe connecting member can be moved between the side flanges.   The window part which can visually recognize the packing waste adhering to the flange by the side of the said communication part can be mounted in the said attachment member instead of a pipe connection member, The mounting | wearing member is any one of Claim 1 thru | or 3 characterized by the above-mentioned. The desorption apparatus of the pipe connection member of description.   The said valve body has a removal part which removes the packing scraps which remain | survived in the flange by the side of the said communication part by inserting in the gap | interval of a pair of said flange. A desorption device for a pipe connecting member according to claim 1. Between the communicating part communicating with the existing fluid pipe and the pipe connecting member connected to the communicating part, a pair of flanges coupled with a predetermined number of bolts via packing is sealed in a sealed manner. A method of detaching a pipe connecting member that seals the communicating portion between opposing surfaces and detaches the pipe connecting member in an uninterrupted flow state,
A valve body that is inserted after forming a gap between the opposing surfaces of the pair of flanges and seals the communicating portion;
A valve body storage portion that stores the valve body so as to be operable from the outside, and an attachment member that is attached in a sealed manner so that a gap can be formed between the pair of flanges,
The mounting member includes a peeling member that is inserted into a gap between the pair of flanges so as to be operable from the outside and peels off packing scraps attached to the flange on the communication part side,
An attachment step of attaching the attachment member to the pair of flanges in a sealed manner;
After the mounting step, a gap forming step of loosening the bolt to form a gap between the opposing surfaces of the pair of flanges;
After the gap forming step, a peeling step of peeling packing waste adhering to the flange on the communication part side by inserting the peeling member into the gap;
A sealing step of sealing the communicating portion by inserting the valve body into the gap after the peeling step;
After the said sealing process, it is comprised from the removal | desorption process of attaching / detaching a pipe connection member, The removal | desorption method of the pipe connection member characterized by the above-mentioned.

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