JP2012215287A - Mounting structure of accessory device into branch pipe of pipe line, and attaching/detaching method of accessory device, as well as attaching/detaching instrument therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of an accessory device, with which various accessory devices (for example, an air vent device) to be mounted in a branch pipe can be easily attached/detached without stopping water to/from the branch pipe.SOLUTION: The mounting structure is composed of a cut-off valve device 1, a connector 2, and the accessory device 3, a main part of the accessory device 3 is inserted through a valve opening of the cut-off valve device 1 and a through hole part of the connector 2, and the accessory device 3 is mounted to a device attaching part of the connector 2. Further, the connector 2 is provided with a sealing attaching part for mounting a predetermined attaching/detaching instrument, and the attaching/detaching instrument having a sealing body provided with a mounting part corresponding to the sealing attaching part is mounted, achieving attachment/detachment of the accessory device without stopping water, and after the accessory device is separated, disconnection from the branch pipe line is performed by the cut-off valve device.

Description

  TECHNICAL FIELD The present invention relates to a mounting structure for attachment devices such as an air venting device mounted in a branch pipe of a pipe such as a cooling water supply pipe and a raw material (liquid) supply pipe and other pipes such as a water main pipe. It is.

  Air existing in the pipe line, which is a liquid flow path, is a major factor that hinders the flow of liquid. As a countermeasure against this, a rising branch pipe is provided in a portion that is piped in the middle and high places of the pipe, and an air vent device is attached to the rising branch pipe. When the air venting device uses the float valve mechanism to release the air in the pipe to the outside air, the floating material such as dust contained in the liquid also flows into the valve rod of the float valve mechanism together with the air. Therefore, the valve must be cleaned. And this cleaning must be performed in the state which interrupted | blocked the communication with the inside of a pipe | tube, without stopping the flow of a pipe line.

  As a countermeasure, Patent Document 1 (Japanese Patent Application Laid-Open No. 2001-65733) discloses a configuration in which an opening / closing valve is interposed between the device and the branch pipe, and the device can be attached and detached by operating the opening / closing valve. Has been.

  Further, as another countermeasure to Patent Document 2 (Japanese Patent Laid-Open No. 2000-337540), an outer casing fixed to the rising branch pipe, and a float is closely fitted in the outer casing so as to be rotatable. An inner collar having a valve opening and a through hole corresponding to each of the outer collar and the inner collar, and the positional relationship between the inner collar and the through hole is determined by the rotation of the inner collar. An air venting device is disclosed which is configured to obtain a communication state and a shut-off state between the inside of the inner tub and the inside of the pipe by changing, and Patent Document 3 (Japanese Patent Laid-Open No. 10-299927) further describes There is disclosed an air venting device configured to move a ridge or an outer cage up and down to obtain a communication state and a blocking state between the inside of the inner tub and the inside of the pipe.

  Patent Document 4 (Japanese Patent Application Laid-Open No. 2007-239860) discloses a technique for attaching and detaching various attachment devices attached to a rising branch pipe of a pipe with continuous water without pipe. Attaching a sealed storage case equipped with a gate valve and attachment / detachment drive mechanism for the attached device part, removing the attached device part in a sealed state, and moving the attached device upward with the sealed storage case filled with running water in the pipeline A means for closing the gate valve, dividing the inside of the sealed storage case into upper and lower chambers, and taking out the attached device from the upper chamber in the sealed storage case is disclosed.

  Further, in Patent Document 5 (Japanese Patent Laid-Open No. 2005-265087), a stop valve provided at the tip of a shaft member is inserted into the base of a rising branch pipe through an opening / closing valve of an accessory device, and the flow to the branch pipe is made. A technique is disclosed in which the on-off valve is replaced while it is closed and the water stop valve is temporarily fixed.

JP 2001-65733 A. JP 2000-337540 A. Japanese Patent Laid-Open No. 10-299927. JP2007-239860A. Japanese Patent Laying-Open No. 2005-265087.

  As disclosed in Patent Document 1, in the case of an air vent device that is connected to a rising branch pipe via an on-off valve as disclosed in Patent Document 1, the air vent device that is an accessory device by opening / closing the on-off valve is used. It is easy to attach and detach, and the internal cleaning can be easily performed. However, a problem of freezing occurs in a cold district due to branching from the rising branch pipe.

  On the other hand, when installed in a stand-up branch pipe and affected by the flow of the main pipe as in the air venting apparatus shown in Patent Documents 2 and 3, the apparatus is prevented from freezing in the cold season. However, the valve mechanism itself requires an inner / outer inner heel blocking structure, which causes a problem that the structure itself is complicated and the manufacturing cost is increased.

  It is also possible to install a simple structure air valve as a non-freezing device in the rising branch pipe, but for maintenance work such as internal cleaning and repair, as shown in Patent Documents 4 and 5, It is not realistic in an air venting device that requires a complicated attaching / detaching device and attaching / detaching work and regularly requires maintenance work.

  Therefore, the present invention proposes a novel attachment device attachment structure, attachment device attachment / detachment method, and attachment / detachment device for facilitating attachment / detachment of the attachment device in the branch pipe with a simple structure air vent device or other attachment device. It is.

  The mounting structure of the accessory device in the branch pipe of the pipe line according to the present invention is composed of the on-off valve device, the coupling body, and the accessory device, and the on-off valve device has a valve opening portion of a predetermined width. The connecting body is formed integrally with or connected to the on-off valve device, and has a through-hole portion with a predetermined width and an accessory device. A device mounting portion for mounting and a sealing mounting portion for mounting a predetermined attachment / detachment device provided on the outer peripheral side of the device mounting portion are provided, and the main part of the accessory device passes through the valve opening and the through hole portion. It is of a size that can be inserted into a branch pipe, and includes an attachment portion that is water-tightly attached to the device attachment portion in the insertion state, and an operation portion that enables attachment / detachment operation with an attachment / detachment tool.

  The attachment of the attachment device to the branch pipe in the pipe line having the above-described configuration is such that the on-off valve device is connected to the branch pipe, and the connection body is connected to the on-off valve device in a configuration in which the on-off valve device and the connection body are not integrally formed The main part of the accessory device is inserted into the branch pipe through the valve opening of the on-off valve device and the through-hole portion of the connector, and is attached to the device mounting portion in a watertight manner. The main part of the accessory device is housed in a branch pipe affected by the main flow, and functions as a non-freezing device.

  An attachment / detachment tool for an accessory device according to the present invention is an instrument used for the attachment structure of the accessory device in the branch pipe of the above-mentioned pipe, and has a container shape with a lower opening having a volume capable of accommodating the accessory device, A sealing body provided with a mounting portion corresponding to the sealing mounting portion of the coupling body on the inner periphery of the opening, and with the sealing body mounted at a predetermined position, the sealing body is connected to the operation section of the accessory device to connect the accessory device to the coupling body. And an operation unit for performing an attaching / detaching operation.

  The attachment / detachment method of the attachment device according to the present invention is performed by using the attachment / detachment tool for the attachment device attached to the branch pipe using the attachment structure of the attachment device.

  The procedure is as follows. For the accessory device attached to the coupling body so that the main part fits in the branch pipe, the sealing body is connected to the sealing mounting portion of the coupling body so that the exposed portion of the accessory device is covered. After the upper space of the device is sealed, the operation unit is connected to the operation unit of the accessory device and operated, and the accessory device is removed from the device mounting portion, and the accessory device is pulled out from the branch pipe and remains in the sealed state. The on-off valve device is closed, and then the attaching / detaching device and the attached device are separated from the pipeline, and with the on-off valve device being closed, the attaching / detaching device with the attached device is attached to the sealing mounting portion, and then the on-off valve device is installed. The valve is opened by operating, the main part of the accessory device is inserted into the branch pipe from the valve opening, and the accessory device is watertightly attached to the device mounting portion in the inserted state.

  Therefore, by using an attachment / detachment tool, the internal / external space (inside the branch pipe and the space above the accessory device) through the on-off valve device is sealed against the outside air. It can be carried out with water without interruption.

  The configuration of the present invention is as described above, and various attachment devices such as an air venting device to be attached to the branch pipe can be used in a non-freezing state with the main part inserted in the branch pipe. Since the attachment device can be attached and detached from the branch pipe by a simple operation using a simple attachment / detachment tool, particularly in an attachment device that requires periodic internal cleaning, such as an air venting device, the device itself is simple. The structure can be adopted.

Sectional drawing which shows the 1st Example of this invention (it shows at the time of attachment apparatus attachment). Explanatory drawing (A is a perspective view, B is a front view) of the attachment apparatus (air venting apparatus). The same figure (enlarged sectional view). Explanatory drawing of the connection body (A is a perspective view, B is a partially cut front view). The whole perspective view of the attachment / detachment implement. The perspective view of the operation part of the operation | movement part of the attachment / detachment implement. Explanatory drawing (downward perspective view) of the connection part of the operation | movement part of the attachment / detachment implement. Sectional drawing of the attachment / detachment implement. Explanatory drawing of the attachment apparatus attachment / detachment procedure (at the start of removal). The figure (under removal work). The figure (removal completion state). Explanatory drawing (perspective view) of the attachment apparatus (air venting apparatus) of the 2nd Example of this invention. Explanatory drawing of the connection body (A is a perspective view, B is a partially cut front view). Explanatory drawing of the attachment / detachment tool (A is a partially cut perspective view, B is a sectional view). Explanatory drawing of the attachment apparatus attachment / detachment procedure (at the start of removal). The figure (under removal work). Explanatory drawing of the other example (3rd Example) of the same connection body (The normal time which attached | subjected the attachment apparatus is shown). FIG. 18 is an explanatory view in which a detachable tool is mounted in the structure of FIG. 17 (during removal). Explanatory drawing of the other example (4th Example) which formed the connection body integrally with the on-off valve apparatus (the normal time which attached | subjected the attachment apparatus is shown). Explanatory drawing which attached the attachment / detachment tool in the structure of the same FIG. 19 (at the time of a removal start).

  Next, an embodiment of the present invention will be described. The first embodiment as an embodiment is shown in FIGS. 1 to 11 and is an example in which an air venting device is adopted as an accessory device, and the pipe end of the branch pipe b formed up from the main pipe (pipe line) a. The structure which mounts the on-off valve apparatus 1, the coupling body 2, and the attachment apparatus (air venting apparatus) 3 to the flange c of this is shown.

  The on-off valve device 1 includes flange portions 11 and 12 for connection on the upper and lower sides, connects the lower flange portion 11 to the flange c, and attaches a connecting body 2 described later to the upper flange portion 12.

  Between the upper and lower flange parts 11 and 12, a ball valve body 13 that rotates in the horizontal axis is built in, and the ball operating body 14 is opened and closed by a drive operation unit 14 attached to the outside. In particular, the valve opening 15 is formed as large as possible.

  The connecting body 2 includes a base portion 21 corresponding to the upper flange portion 12, and a cylindrical portion 22 standing at the center of the base portion 21. The base portion 21 is connected to the upper flange portion 12. A bolt hole 211 is drilled, a through hole 23 having a predetermined size is drilled on the inner bottom surface of the cylindrical portion 22, and an attachment device is attached to the inner peripheral surface of the cylindrical portion 22. An attachment portion 24 is provided, and a sealing attachment portion 25 is provided on the outer periphery of the cylindrical portion 22. A water seal packing 231 is provided on the inner peripheral surface of the through hole portion 23 to ensure water tightness between the inside and outside of the through hole portion 23 when the attachment device (air venting device) 3 is attached. .

  The device mounting portion 24 includes a through-hole outer edge surface 241, a retaining protrusion 242 that intermittently protrudes inward of the upper portion of the cylindrical portion 22, and a notch insertion portion 243 between the retaining protrusion 242. It is comprised by. Further, the sealing attachment portion 25 is formed by providing locking protrusions around the outer peripheral surface of the cylindrical portion 22 at appropriate intervals.

  The attachment device (air venting device) 3 is an air venting device using a float mechanism, and includes a cylindrical float chamber 31, a mounting flange portion 32, a lid 33, a first float 34, and a second float 35. .

  The float chamber 31 corresponds to a main part of the accessory device of the present invention, and has an outer diameter that can be inserted into the valve opening 15 and the through hole 23. The float chamber 31 includes the first float 34 and the second float 34. The float 35 is placed inside, and air introduction holes 311 and 312 are provided in the vicinity of the bottom surface and the upper peripheral surface.

  The mounting flange portion 32 protrudes from the upper outer periphery of the float chamber 31 and can be particularly inserted from the insertion portion 243. The outer periphery enters the lower portion of the retaining protrusion 242 by the rotation of the entire apparatus. A protrusion 321 is provided.

  The lid 33 closes the upper opening of the float chamber 31 and is provided with a small through hole 331 in the center. The lid 33 is fixed to the mounting flange portion 32 with a fastening bolt 36. The pair of fastening bolts 36a facing each other is provided with a locking shaft portion 361 and a locking shaft portion 361 having a large diameter continuously provided above the locking shaft portion 361 as an operation portion. is there.

  The first float 34 is disposed above the float chamber 31 and abuts against the lower surface of the lid 33 (the ceiling surface of the float chamber 31), thereby blocking the float chamber 31 from the outside air (for attachment / detachment). (Corresponding to the valve portion of the on-off valve mechanism), as a configuration for releasing the blocking, a protruding portion (being a valve operating portion of the detachable open valve mechanism) 341 located in the small through hole 331, and the protruding portion 341 The second float 35 is disposed at a position where the lower opening portion of the air hole 342 is closed.

  Thus, the installation of the air vent device (attachment device) 3 using the on-off valve device 1 and the connecting body 2 connects the lower flange portion 11 of the on-off valve device 1 to the flange c of the branch pipe b, and The base portion 21 of the connector 2 is continuously attached to the upper flange portion 12 of the on-off valve device 1.

  Further, the air vent device (attachment device) 3 is mounted by inserting the float chamber (main part) 31 through the through hole 23 of the connector 2 and the valve opening 15 of the on-off valve device 1 into the pipe line of the branch pipe b. In this insertion, the outer peripheral projection 321 is inserted from the insertion portion 243, and the whole is further rotated to move the outer peripheral projection 321 below the retaining projection 242. The outer peripheral surface 241 and the retaining projection 242 are closely fitted. A ring packing 322 is provided on the lower surface of the mounting flange portion 32 that faces the outer edge surface 241 of the through hole, and the water sealing packing 231 that realizes water sealing when the air venting device (attached device) 3 is mounted is provided. It performs an auxiliary function or an alternative function.

  Therefore, the air venting device (attached device) 3 is mounted in the pipe line of the branch pipe b, and the air bubbles in the liquid flowing through the main pipe a enter the branch pipe line, and any of the air introduction holes 311 and 312 When entering the float chamber 31, the second float 35 is slightly lowered and discharged to the outside through the air hole 342. When a large amount of air needs to be released, the first float 34 descends and is released at once from the small through-hole 331 of the lid 33. The first float 34 functions in the same way as a conventional air venting device, and the branch pipe. Non-freezing mounting is realized by mounting in the pipe b.

  The adoption of the above-described configuration in the present invention is for performing the attachment / detachment of the device with unrestricted water without blocking the flow path of the pipe line when performing various maintenance operations of the air vent device (attached device) 3. This is realized by using the detachable device 4.

  The attachment / detachment tool 4 shown as the first embodiment is provided with a sealing body 41 and an operating part 42. The sealing body 41 is a container shape having a lower opening that can accommodate the air venting device (attached device) 3. Thus, a mounting portion (intermittent protrusion) 411 corresponding to the sealing mounting portion 25 is provided on the lower inner peripheral surface, discharge valves 412 and 413 are attached to the lower portion and the upper portion, and the operating portion 42 is provided on the inner peripheral surface. The inner threaded surface 414 is used to move up and down.

  The operation unit 42 connects the attachment unit 3 and the operation unit with a mechanism for moving up and down to move the attachment device 3 in and out of the branch pipe by using the multiple pipe and shaft passing through the upper plate of the sealing body 41 as a transmission mechanism. A locking mechanism and an opening operation mechanism for operating the protruding portion (valve operating portion of the detachable opening valve mechanism) 341 of the attachment device 3 are provided.

  The mechanism for moving the attachment device 3 up and down includes an operating peripheral plate 421 that is screwed to the inner thread surface 414, a connecting pipe 422 connected to the operating peripheral plate 421, and a rotary handle 423 connected to the upper end of the connecting pipe 422. The locking mechanism configured and connected to the attachment device 3 includes a double operation tube 424 provided inside the connection tube 422 and a radius provided below the operation peripheral plate 421 connected to each of the double operation tube 424. A locking plate 425 protruding in the direction and a locking operation lever 426 connected to each upper end of the double operation tube 424 are configured.

  In particular, a U-shaped groove 427 having a U-shape in a plan view is provided on the end surface of the locking plate 425 in the rotation direction, and when the two locking operation levers 426 are opened, the U-shaped groove 427 When the opening side is separated (see FIG. 7) and the legs are aligned and closed, a circular hole that substantially coincides with the locking shaft 361 of the attachment device 3 is formed by the overlapping U-shaped groove 427. is there. The opening operation mechanism includes an opening operation rod 428 that penetrates the double operation tube 424 up and down.

  In order to remove the air vent device (attachment device) 3 attached to the branch pipe b from the branch pipe b, the above-described attachment / detachment tool 4 is used. First, the lower opening portion of the sealing body 41 is covered with the upper surface portion of the attachment device 3. The mounting portion 411 is positioned below the sealing mounting portion 25 so that the mounting portion (intermittent ridge) 411 does not collide with the sealing mounting portion (locking protrusion) 25 of the connector 2. In this state, the sealing body 41 is rotated to lock the mounting portion 411 on the sealing mounting portion 25.

  Further, the locking operation lever 426 is in the open state, the U-shaped groove 427 is opened, and the locking plate 425 is lowered to the position of the locking shaft portion 361 of the attachment device 3. In this state, when the locking operation lever 426 is rotated to the closed leg position, the locking shaft portion 361 enters the U-shaped groove 427 and the locking plate 425 sandwiches the locking shaft portion 361.

  Next, in a state where the upper discharge valve 413 is slightly opened, the opening operation rod 428 is operated to push down the projecting portion (the valve operation portion of the detachable release valve mechanism) 341, so that the first float 34 and the lower surface of the lid 33 are Is released, and the small through hole 331 is opened. As a result, the liquid (water) in the pipeline overflows into the sealed body 41, the air in the sealed body 41 is released from the upper discharge valve 413, and the sealed body 41 is filled with the liquid in the pipeline. . Of course, the upper discharge valve 413 closes in a timely manner.

  In the above-described state, the pressure in the pipe line and the pressure in the sealing body 41 are balanced, the pressure in the pipe applied to the air venting device (accessory device) 3 is relaxed, and the resistance force to the rotation operation of the air venting device (accessory device) 3 is reduced. Therefore, the air release device (accessory device) 3 is rotated by rotating the two locking operation levers 426 together, and the outer peripheral projection 321 is moved to the position of the insertion portion 243 by this rotation operation. (See FIG. 9).

  As a result, the mounting flange 32 is released from the tightly-fitted state between the outer peripheral surface 241 of the through hole and the retaining projection 242 and the air venting device (attached device) 3 can be taken out. When operated, the operating peripheral plate 421 rotates and rises along the inner screw surface 414, and accordingly, the attachment device 3 rises in a state where the locking head 362 is suspended by the locking plate 425. Therefore, the attachment device 3 can be pulled out to the outside of the coupling body 2 by a predetermined rotation operation of the rotary handle 423 (see FIG. 10).

  Then, the on-off valve device 1 is operated to close the valve opening 15, open the lower discharge valve 412 and drain the sealed body 41, and then rotate the sealed body 41 to separate it from the connector 2. Together with the air venting device (attached device) 3, it is removed from the branch pipe b (FIG. 11).

  When the air release device (accessory device) 3 is removed from the attachment / detachment device 4 with the locking operation lever 426 in the open state and the predetermined maintenance work such as cleaning is completed, the air release device (accessory device) 3 is the same as when the air release device (accessory device) 3 is removed. The sealing operation lever 426 is incorporated into the sealing body 41, the sealing body 41 is attached to the sealing mounting portion 25 of the coupling body 2, and then the on-off valve device 1 is operated to be opened. After filling with the liquid in the passage, the float chamber (main part) 31 of the air vent device (attachment device) 3 is inserted into the branch pipe b through the through hole portion 23 and the valve opening portion 15 by the rotational operation of the rotary handle 423. By turning the stop operation lever 426, the mounting flange portion 32 of the air vent device (accessory device) 3 is fitted into a predetermined position, and the air vent device (accessory device) 3 is mounted.

  After the air venting device (attached device) 3 is mounted, the sealing body 41 is drained, the locking operation lever 426 is opened, the sealing body 41 is rotated, and the detachable device 4 is removed from the connector 2. The conventional pipe line state is assumed.

  The present invention is not limited to the first embodiment described above, and various modified structures can be employed. For example, the formation position of the sealing attachment part (locking protrusion) 25 is not formed on the outer periphery of the cylindrical part 22, but is formed on the upper surface or outer peripheral surface of the outer side of the cylindrical part of the connector 2. What is necessary is just to provide the mounting part (intermittent protrusion) of the sealing main body corresponding to the said sealing attachment part (locking protrusion). Further, as will be described in the second embodiment, a screwing mounting structure using screws may be employed without using a locking protrusion on the sealing mounting portion.

  In the connecting body 2a adopting a screwing mounting structure for the hermetic mounting part, the outer periphery of the cylindrical part 22 is formed on the screw surface to form the hermetic mounting part 26, and the bolt head 363 of the fastening bolt 36 is used as it is as the operating part. The accessory device 3a is used in combination with the attachment / detachment tool 5 of the second embodiment described below.

  The attachment / detachment tool 5 shown as the second embodiment has the same basic configuration as the attachment / detachment tool 4 of the first embodiment, and includes a sealing body 51 and an operation unit 52. A mounting portion 511 corresponding to the sealing mounting portion (screw surface) 26 is provided on the lower inner peripheral surface, and discharge valves 512 and 513 are attached to the lower portion and the upper portion.

  The operating part 52 includes a connecting part 521 provided with a fitting recess corresponding to the bolt head (operating part) 363 of the fastening bolt 36, an operating handle 522 provided outside the sealing body 51, and It is formed by a connecting pipe 523 that connects the connecting portion 521 and the operation handle 522, and an open operation rod 524 that passes through the inside of the connecting pipe 523.

  The opening operation rod 524 has an upper end protruding above the operation handle 522 and a lower end projecting from the connecting portion 521, and is screwed into a screw in the connecting tube 523 so as to be vertically movable.

  In order to remove the air vent device (attached device) 3a attached to the branch pipe b using the attachment / detachment tool 5 from the branch pipe b, first, the sealing body 51 is screwed to the sealing attachment portion 26, and the inside of the sealing body 51 is In the sealed state, the bolt head (operation unit) 363 is fitted into the fitting recess of the connecting portion 521.

  In the subsequent procedure, as in the first embodiment, the upper discharge valve 513 is slightly opened, the opening operation rod 524 is operated, and the protruding portion 341 is pushed down to open the small through hole 331. Through the opening, the liquid (water) in the pipeline overflows into the sealed body 51, the air in the sealed body 51 is discharged from the upper discharge valve 513, and the inside of the sealed body 51 is filled with the liquid in the pipeline. The internal pressure and the pressure in the sealed body 51 are balanced.

  When the operation handle 522 is operated to rotate the air vent device (attached device) 3a, the outer peripheral projection 321 moves to the position of the insertion portion 243 (see FIG. 15).

  As a result, the mounting flange portion 32 is released from the tightly-fitted state between the outer edge surface 241 of the through hole portion and the retaining projection 242 and the air vent device (attached device) 3a can be taken out. The attachment device 3a can be pulled out of the connecting body 2a and taken out (see FIG. 16).

  When the upper vent valve 513 is opened when the air venting device (accessory device) 3a is pulled up, the pressure in the sealing body 51 is released, and the air venting device (accessory device) 3a is moved outward of the connecting body 2a by the pressure in the pipe line. Extruded.

  Then, the on-off valve device 1 is operated to close the valve opening 15 and open the lower discharge valve 512 to drain the sealed body 51. Then, the sealed body 51 is separated from the coupling body 2a, and the air venting device (attached) Device) Together with 3a, remove from branch pipe b.

  The air vent device (attachment device) 3a is mounted in the opposite manner to the above-described removal operation. The air vent device (accessory device) 3a is disposed in the sealing body 51, and the sealing body 51 is mounted on the sealing mounting portion 26 of the connector 2a. Then, after opening and closing the on-off valve device 1 and filling the inside of the sealing body 51 with the liquid in the pipeline, the float chamber (main part) 31 of the air venting device (attached device) 3a is connected to the through-hole portion 23 and the valve. Inserting into the branch pipe b through the opening 15, fitting the mounting flange portion 32 of the air vent device (accessory device) 3 a in a predetermined position by rotating the operation handle 522, and mounting the air vent device (accessory device) 3 a. Do.

  After the air venting device (attached device) 3a is mounted, the sealing body 51 is drained to remove the detachable tool 5 to obtain a conventional pipeline state.

  In addition, as in the third embodiment shown in FIGS. 17 and 18, instead of the second embodiment described above, the connecting bolt to be attached to the upper flange portion 12 is replaced with a long bolt (sealed mounting). The connecting body 2b, which is a part) 27, is employed, and a connecting flange (mounting part) 514 corresponding to the long bolt (sealing mounting part) 27 can be employed as the attachment / detachment tool 5a.

  The attachment / detachment device 5a is placed so that the lower opening edge of the sealing body 51a is in close contact with the upper edge of the cylindrical portion 22, and the connecting flange (mounting portion) 514 is attached by the long bolt 27, The sealing body 51a is hermetically mounted.

  Further, as shown in FIGS. 19 and 20, the connecting body 2b may be formed integrally with the on-off valve device 1 so that the upper flange portion 12 in the on-off valve device 1 becomes the base portion 21 of the connecting body 2b. A bolt hole can be provided in the upper flange portion 12 (base portion 21), a long bolt 27 can be attached to the bolt hole, and the detachable device 5a can be employed.

  In addition, the on-off valve device 1 (connector 2b) is connected to the inside of the on-off valve device 1 (inside the connector 2b), and a discharge valve mechanism 16 that can discharge the liquid in the pipe line to the outside is attached, and the other attaching / detaching device 5a is attached to the other attaching / detaching device 5a. In addition, an in-pipe pressure introducing portion 515 connected to the discharge valve mechanism 16 is provided so that the in-pipe liquid can be introduced into the sealing body 51a.

  Then, similarly to the removal work of the air vent device (attachment device) 3a in the second embodiment, the release valve mechanism 16 is opened with the upper discharge valve 513 slightly opened after the attachment / detachment tool 5a is attached. Then, when the liquid in the pipe line is introduced into the sealed body 51a, the inside of the sealed body 51a is filled with the liquid in the pipe line, and the pressure in the pipe line and the pressure in the sealed body 51a are balanced, and the air venting device (attached device) The pressure in the pipe applied to 3a is relieved, the resistance force against the rotation operation of the air vent device (attachment device) 3a is reduced, and the rotation operation (detachment operation) of the air vent device (accessory device) 3a can be easily performed.

  Of course, the attaching / detaching device 4 of the first embodiment also employs a mounting portion (coupling flange) 514 corresponding to the sealing mounting portion 27 to which a long bolt is applied, instead of the mounting portion 411 that employs intermittent protrusions. It is also possible to employ the in-pipe pressure introduction section 515.

  In each of the above-described embodiments, the attached device is the air venting device 3 or 3a. However, the present invention is not limited to the dust removal filter that is inserted into the main pipe through the branch pipe, and various measurements provided with an intake port in the main pipe. The present invention can be applied to various accessory devices whose main part is the introduction part of the device.

  Further, the on-off valve device 1 is not limited to the ball valve mechanism, and any mechanism can be adopted as long as the valve opening portion can ensure a predetermined large diameter like the shutter valve mechanism.

  Furthermore, a connecting / disconnecting structure of the connecting body and the accessory device, a connecting / detaching structure of the connecting body and the attaching / detaching device, a connecting / detaching structure of the accessory device and the attaching / detaching device, a corresponding structure of the release valve for attaching / detaching the accessory device and the opening operation part of the attaching / detaching device, etc. As long as it has a structure that exhibits a predetermined function, its specific structure is arbitrarily determined.

a Main (pipe)
b Branch pipe c Flange 1 On-off valve device 11 Lower flange portion 12 Upper flange portion 13 Ball valve body 14 Drive operation portion 15 Valve opening portion 16 Release valve mechanism 2, 2a, 2b Connected body 21 Base portion 211 Bolt hole 22 Cylindrical portion 23 Through-hole portion 231 Water seal packing 24 Mounting portion (device mounting portion)
241 Through-hole part outer edge surface 242 Removal prevention protrusion 243 Insertion part 25 Sealing attachment part (locking protrusion)
26 Seal mounting part (screw surface)
27 Long bolt (sealed mounting part)
3,3a Air venting device (attached device)
31 Float room (main part)
311, 312 Air introduction hole 32 Mounting flange portion 321 Outer peripheral projection 322 Ring packing 33 Lid body 331 Small through hole 34 First float 341 Protrusion (detachable release valve)
342 Air hole 35 Second float 36, 36a Fastening bolt 361 Locking shaft (operating part)
362 Head for locking (operation part)
363 Bolt head (operation part)
4,5,5a Detachable device 41,51,51a Sealing body 411 Wearing part (intermittent ridge)
511 mounting part (screw surface)
514 Mounting part (connection flange)
412, 512 Lower discharge valve 413, 513 Upper discharge valve 414 Internal thread surface 514 Connection flange 515 Pipe internal pressure introduction part 42, 52 Operation part 421 Operation peripheral plate 422, 523 Connection pipe 423 Rotation handle 424 Double operation pipe 425 Locking plate 426 Locking operation lever 427 U-shaped grooves 428 and 524 Opening operation rod 521 Connecting portion 522 Operation handle

Claims (17)

An on-off valve device having a valve opening of a predetermined width and connected to a branch pipe in a pipeline;
A through-hole portion having a predetermined width, a device attachment portion for attaching the following accessory device, and a predetermined attachment / detachment device provided on the outer peripheral side of the device attachment portion, which are connected to or integrally formed with the on-off valve device. A coupling body having a sealing mounting portion to be mounted;
The main part is of a size that can be inserted into the branch pipe through the valve opening and the through-hole part, and can be attached / detached by the attaching part for watertightly attaching to the apparatus attaching part in the inserted state and the attaching / detaching device. An attached device having an operation unit for
A structure for mounting an accessory device in a branch pipe of a pipeline characterized by comprising:   The attachment structure of the attachment device in the branch pipe of the pipeline according to claim 1, wherein the attachment device is provided with a detachable release valve mechanism that communicates with the inside of the pipeline by an external operation.   The attachment structure of the attachment device in the branch pipe of the pipe line according to claim 1, wherein a discharge valve mechanism for the liquid in the pipe line is attached to the on-off valve device or the coupling body.   A branch pipe end is formed in the flange, and the on-off valve device is connected to the branch pipe by providing flange portions above and below the on-off valve, and a base body corresponding to the upper flange portion of the on-off valve device, and a base portion 4. A pipe branch according to any one of claims 1 to 3, wherein a cylindrical portion is erected in the center, an apparatus mounting portion is provided on the inner periphery of the cylindrical portion, and a sealing mounting portion is provided on the outer periphery or base portion of the cylindrical portion. Attachment structure of the accessory device in the pipe.   The branch pipe end is formed in a flange, and the on-off valve device is connected to the branch pipe by providing flange portions above and below the on-off valve, and a cylindrical portion is erected at the center of the upper flange portion of the on-off valve device. The pipe according to any one of claims 1 to 3, wherein a device attachment portion is provided on the inner periphery of the cylindrical portion, and a sealing attachment portion is provided on the outer periphery of the cylindrical portion or on the upper flange portion so that the connecting body is integrally formed with the on-off valve device. Attachment structure of the attached device in the branch pipe of the road.   The device mounting part is formed by the outer edge surface of the through hole part, the retaining protrusion protruding intermittently inward of the upper part of the cylindrical part, and the insertion part of the notch between the retaining protrusions, The mounting portion is provided with an outer peripheral projection that can be inserted from the insertion portion, and is configured to be tightly fitted between the outer edge surface of the through hole portion and the retaining portion projection by inserting and rotating the accessory device. A mounting structure of the accessory device in the branch pipe of any one of 4 and 5.   The sealing mounting portion is formed by a locking protrusion that protrudes intermittently on the outer periphery of the cylindrical portion, the base portion, or the outer periphery of the upper flange so that the removable device can be mounted by rotating the crown. Item 7. A structure for mounting an accessory device in a branch pipe of any one of items 4 to 6.   The attachment structure of an attachment device in a branch pipe of any one of claims 1 to 7, wherein the on-off valve device employs a ball valve mechanism.   The inside of a branch pipe of any one of claims 1 to 8, wherein the attachment device is an air vent device adopting a float mechanism, and the float chamber is inserted into the branch pipeline through the valve opening and the through-hole portion. Attaching structure of the accessory device to.   An on-off valve device having a valve opening of a predetermined width and connected to a branch pipe in a pipeline, and a through-hole portion of a predetermined width and an attached device attached to or integrally formed with the on-off valve device And a connecting body having a sealing mounting portion for mounting a predetermined attachment / detachment device provided on the outer peripheral side of the device mounting portion, and a main portion in the branch pipe through the valve opening and the through hole portion. A pipe having a size that can be inserted, an attachment portion that is water-tightly attached to the device attachment portion in the inserted state, and an attachment device that includes an operation portion that enables the attachment / detachment operation by the attachment / detachment tool. An instrument used for the attachment structure of the accessory device in the branch pipe, and is a container shape of a lower opening having a volume capable of storing the accessory device, and is attached to the inner periphery of the lower opening corresponding to the sealing attachment portion of the connector A sealing body with a portion and a sealing body The attachment device is attached to and detached from the branch pipe of the pipe, characterized in that the attachment device is connected to the operation unit of the attachment device in a state where the attachment device is attached to the connecting body. Instruments.   The attachment / detachment tool for an accessory device in a branch pipe of a pipeline according to claim 10, wherein an opening operation portion for opening an attachment device attachment / detachment release valve mechanism is provided in the operating portion.   11. The attachment / detachment of the accessory device into the branch pipe of the pipe according to claim 10, wherein the sealing main body is provided with an in-pipe pressure introducing portion connected to the on-off valve device or the discharge valve mechanism of the in-pipe liquid attached to the connecting body. Instruments.   The attachment / detachment tool of the attachment apparatus in the branch pipe of any one of Claim 10 thru | or 12 formed by attaching the discharge valve mechanism to the sealing main body.   The operation unit is a manual mechanism configured by a connection unit that is connected to an operation unit of an accessory device, and an operation handle that is connected to the connection unit and protrudes outward of a sealing body to operate the connection unit. The attachment / detachment tool of the attachment apparatus in the branch pipe of any one of 10 thru | or 13 pipelines.   An on-off valve device having a valve opening of a predetermined width is connected to a branch pipe in a pipeline, a through hole portion of a predetermined width, a device mounting portion for mounting an accessory device, and the device mounting portion A connecting body provided with a sealing mounting portion of an attaching / detaching device provided on the outer peripheral side is continuously attached to or integrally formed with the on-off valve device, and a main portion is further branched through a valve opening and a through-hole portion. An accessory device that is formed in a size that can be inserted into the device and that has an operation unit that can be attached / detached by an attachment / detachment tool is inserted into the branch pipe and the watertightly attached to the device attachment portion. In the attachment device mounting structure of the branch pipe of the pipe line, the attachment / detachment of the attachment device is a container shape of a lower opening having a volume capable of accommodating the attachment device, and corresponds to the sealing attachment portion of the coupling body on the inner periphery of the lower opening portion. A sealed body with a mounting part and a sealed body in place In such a state, the attachment unit of the sealing body is attached to the sealing attachment unit using the attachment / detachment tool including the operation unit that is connected to the operation unit of the attachment device and performs the attachment / detachment operation of the attachment device to the coupling body. After the upper space of the device is sealed, the operation unit is connected to the operation unit of the accessory device and operated, and the accessory device is removed from the device mounting portion, and the accessory device is pulled out from the branch pipe and remains in the sealed state. The on-off valve device is closed, and then the attaching / detaching device and the attached device are separated from the pipeline, and with the on-off valve device being closed, the attaching / detaching device with the attached device is attached to the sealing mounting portion, and then the on-off valve device is installed. A valve branch is opened by operating, the main part of the accessory device is inserted into the branch pipe from the valve opening portion, and the accessory device is watertightly attached to the device mounting portion in the inserted state. Attaching and removing the accessory device in the tube.   The attachment device is provided with a detachable release valve mechanism that communicates with the inside of the pipe line by an external operation, and an opening operation portion that performs an opening operation of the attachment / detachment release valve mechanism of the attachment device is provided in the operation portion of the attachment / detachment device. In the sealed state attached to the sealing mounting part, operate the opening operation part to operate the detachable release valve mechanism to relieve the pressure in the sealing body applied to the auxiliary device, and then operate the operating part to operate the auxiliary device. The method for attaching and detaching the accessory device to the branch pipe of the pipe line according to claim 15, wherein the attachment device is removed from the device attachment portion.   The on-off valve device or connecting body is provided with a discharge valve mechanism for liquid in the pipe line, and the sealing body is provided with an in-pipe pressure introduction section connected to the discharge valve mechanism, and the sealing body is mounted on the sealing mounting section. 16. The pipe line according to claim 15, wherein the discharge valve mechanism is operated in the state to relieve pressure in the sealed main body applied to the attachment device, and then the operation device is operated to remove the attachment device from the device attachment portion. Attaching and removing the accessory device in the branch pipe.

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