JPH0511412Y2 - - Google Patents

Description

[Detailed explanation of the device] A. Purpose of the device [Industrial application field] This device cuts an existing pipe while maintaining fluid continuity, that is, without water interruption, and installs a fluid valve at the cut point. The device relates to a so-called continuous water insertion fluid valve device.

[Prior art] The technology for installing fluid valves in existing pipelines without water interruption is disclosed in Japanese Patent Publication No. 40-20474 for the gate valve type, and in Japanese Utility Model Publication No. 1973 for the butterfly valve type.
It is known from the publication No.-7735.

Incidentally, in recent years, ball valves have been increasingly used because of their good operability and excellent fluid resistance, but this ball valve has not yet been installed in existing pipes in a state where water is not cut off.

[Problems to be Solved by the Invention] In view of the above-mentioned circumstances, an object of the present invention is to provide a fluid valve device for installing a ball valve type fluid valve into an existing pipe without water interruption.

B. Structure of the invention [Means for solving the problem] In order to achieve the above object, the uninterrupted water insertion fluid valve device of the invention adopts the following structure (technical means). That is, it consists of a frame body having a perforated cylinder part, an upper cover that can be attached to close the opening of the frame body, and a fluid valve inserted into the perforated cylinder part of the frame body, and the perforated cylinder part is connected to the pipe axis of the existing pipe. The perforated pipe is installed perpendicularly to the pipe, has an inner diameter larger than the outer diameter of the existing pipe, is assembled by sandwiching the existing pipe watertightly, and has a bottomed cylindrical shape with an open top. Inside the section, there are vertical abutment plates running perpendicularly to both sides in the direction perpendicular to the tube axis, and on the bottom, a bottom abutment plate is connected to the vertical abutment plates and passes through the center of the bottom, and on the upper inner peripheral surface there are vertical abutment plates. A horizontal backing plate is fixedly connected to the backing plate, and the fluid valve holds a ball through a seat and has a housing consisting of a housing body and a housing lid, and the ball and housing each have a Valve holes are formed, the valve holes are disposed substantially aligned with the axis of the existing pipe, a housing lid having the valve holes is attached to the side of the housing body, and the upper part of the housing is attached to the side of the housing body. In addition to being formed into a disk shape, both sides and the bottom of the housing in the direction perpendicular to the tube axis are formed in a rectangular shape opposite to the side and bottom of the perforated tube part, and the upper circumferential side, both sides and the bottom of the housing are formed into a rectangular shape. Packing is installed opposite the vertical backing plate, bottom backing plate, and horizontal backing plate in the perforated cylindrical part, and a rotation stopper that engages with the bottom backing plate of the perforated cylindrical part is fixed on the bottom surface of the housing. It is characterized by

[Function] The fluid valve device of the present invention is used and functions as follows.

This device, with the upper cover and fluid valve removed, is assembled and fixed at the valve installation position of the existing pipe, and the existing pipe is drilled and cut using a drilling machine via the working water control valve at the upper end of the perforated cylinder.

After that, after removing the perforator and cutting piece,
The fluid valve is inserted into the perforated cylinder through the working water control valve, with its side packing aligned with the vertical backing plate of the perforated cylinder, and the detent on the bottom surface is engaged with the bottom backing plate. This engagement places the fluid valve in place within the perforated barrel.

Next, the fluid valve is fixed in the perforated cylinder part by a predetermined means, and after that, the working water control valve and the like are removed, and the opening of the perforated cylinder part is closed with the upper lid.

In the fluid valve device installed in this way, the fluid valve has a watertight structure with respect to the frame except for the valve hole, and the valve hole of the fluid valve faces the perforation of the existing pipe, so the opening action of the ball is prevented. This allows the fluid to flow smoothly. Furthermore, the fluid flow is interrupted by the closing action of the ball.

[Example] An example of the uninterrupted water insertion fluid valve device of the present invention will be described based on the drawings.

Figures 1 to 3 show an example of a fluid valve device with constant water insertion (hereinafter simply referred to as "fluid valve device").
Indicates S. In the figure, P is an existing pipe, for example, a water supply pipe in a water pipeline, and the existing pipe P
The device S of the present invention is attached to the fluid valve installation site. Q is a hole cut into the existing pipe P by a punching machine. Note that FIGS. 1 to 3 show the present fluid valve device S in a stationary state.

The fluid valve device S includes a frame 1, a top lid 2, and a fluid valve 3. The top lid 2 can be attached to the frame 1, and the fluid valve 3 can be inserted into and removed from the frame 1. Ru. Furthermore, this fluid valve device S also includes a packing 5 and a locking bolt 7.

The configuration of each part will be explained in detail below.

The frame 1 consists of a perforated tube portion 10 and an attached pipe portion 20.

The perforated cylindrical part 10 has an opening 11 in the upper part, and is divided into an upper perforated cylindrical part 10a and a lower perforated cylindrical part 10b with a horizontal plane containing the central axis O of the existing pipe P as a boundary. The upper perforated cylindrical part 10a and the lower perforated cylindrical part 10b have their end surfaces abutted and are assembled together by welding or flange abutment, and are formed as a whole into an integral cylindrical body with an open top and a bottomed bottom. . 1
2 is its bottom plate. The perforated cylindrical portion 10 has an inner diameter larger than the outer diameter of the existing pipe P, and is disposed perpendicular to the pipe axis O of the existing pipe P.

In this perforated cylindrical part 10, a flange 13 is stretched outwardly from the upper end of the perforated cylindrical part 10. Further, a vertical backing plate 14 is installed vertically on both sides of the perforated cylindrical part 10 in the direction perpendicular to the tube axis from the middle to the bottom. A backing plate 15 is fixedly provided. The bottom abutting plate 15 is perpendicular to the tube axis and passes through the center of the bottom plate 12 of the perforated cylindrical portion 10. Furthermore, a horizontal backing plate 16 is fixedly provided on the upper inner circumferential surface of the perforated cylindrical portion 10 so as to be connected to the vertical backing plate 14 . The inner surfaces of the vertical backing plate 14 and the horizontal backing plate 16 are provided with a perforated cylindrical portion 10.
The vertical backing plate 14 is located on a circumferential surface centered on the vertical central axis of
It is formed into an inclined surface, and is connected to the bottom contact plate 15 with a curved surface. Reference numeral 18 denotes bolt holes formed at required positions in the circumferential direction of the cylindrical wall above the horizontal backing plate 16. The locking bolt 7 is hinged into this bolt hole 18.

The attached pipe part 20 is formed continuously with the perforated cylinder part 10, and consists of two semi-tubular members 22 (an upper semi-tubular member 22a, a lower semi-tubular member 22b), an upper half and a lower half. The frame body 1 is fixed to the existing pipe P by holding the existing pipe P by bringing the end faces into watertight contact. Reference numeral 24 denotes a joint port at the end of the attached pipe section 20 in the tube axis direction, and a rubber ring (one By pressing 24d (which is joined after installation), the attached pipe portion 20 is made watertight. In addition,
If the attached pipe section 20 is fixed to the existing pipe P by welding or the like and can be made watertight by itself, the joint port 24 can be omitted. Alternatively, the semi-tubular member 22 can be omitted and the area around the existing pipe P of the perforated cylinder portion 10 can be made watertight using only the joint opening.

The upper lid 2 closes the opening 11 of the perforated cylinder part 10 of the frame body 1. That is, it covers the upper part of the opening 11 of the perforated cylinder part 10 and is fixed to the flange 13 of the perforated cylinder part 10 with bolts 26 . A large-diameter play hole 27 is provided in the center of the upper lid 2, into which an adjustment fitting to be described later is attached.

The fluid valve 3 is a so-called ball valve, and includes a valve body or ball 30, a housing 34 that holds the ball 30 through a valve seat or seat 31, a housing body 32, and a housing cover 33;
It also consists of the main part of the valve stem 35 that rotates the ball 30.

Valve holes 30A, 32A, and 3 are provided in the ball 30, the housing body 32, and the housing lid body 33, respectively.
3A is formed.

In this fluid valve 3, the upper part 36 of the housing 34 is formed into a disc shape, and the backing plate 14 of the perforated cylindrical part 10, the bottom face and the circumferential side of the upper disc body 36, 15 and 16 as possible. That is,
As shown in FIG. 3, a cross section of the housing 34 that is perpendicular to the tube axis Q and passes through the center of the valve shaft is formed into a rectangular shape with a bulging rib. Further, both side surfaces are formed into inclined surfaces corresponding to the backing plate 14.

A perforated cylindrical portion 10 is provided on both side surfaces and the bottom surface of the housing 34 and on the circumferential surface of the upper disc body 36.
Grooves 37 corresponding to the backing plates 14, 15, 16 provided therein are recessed. The packing 5 is attached to this groove 37.

A pair of detents 38 are protruded from the bottom surface of the housing 34 with a groove 37 in between. The detent 3
8 are provided at a predetermined interval, that is, the width of the bottom cover plate 15, and two sets are provided on both sides in the direction perpendicular to the tube axis from the center of the bottom surface.

The housing lid body 33 has a valve hole 33A, and is attached to the side surface of the housing body 32 in the tube axis direction with a mounting bolt 40.

The valve stem 35 rotatably passes through the center of the upper part of the housing 34, and its lower end 42 is fixed by fitting into the ball 30. That is, the lower end 4
2 has an oval-shaped cross section (i.e., the valve stem 35
(with both sides of the round cross section cut off) is fitted in a groove 43 recessed in the upper end of the ball 30 in a non-rotatable manner.

A stopper 45 is keyed to the middle portion of the valve stem 35, and its collar 45a engages with a pin 46 embedded in the upper surface of the housing 34. As a result, the valve stem 35 is restricted to 90° rotation,
The ball 30 assumes fully open and fully closed positions.

The upper part of the valve stem 35 is inserted into an insertion hole of an adjusting fitting 47, and the adjusting fitting 47 is used to accurately center the fluid valve 3 when it is installed. That is, the adjustment fitting 47
The outer diameter of the protruding cylindrical portion 47a is made slightly smaller than the play hole 27 of the upper lid 2, allowing movement by that clearance for adjustment. Collar 47b of adjustment fitting 47
is fixed to the upper cover 2 with fixing bolts.

The upper end 48 of the valve stem 35 serves as a rotating portion.

The fluid valve 3 is further characterized by the valve holes 32A and 33 of the housing body 32 and the lid body 33.
The opening edge of A is formed facing the perforation Q of the existing pipe P and following the shape of the perforation Q. That is, as shown in FIG. 2, since the perforation Q is determined to be circular with a predetermined radius R, the opening edge is finished formed with a radius r slightly smaller than the diameter of the perforation Q. There is.

The packing 5 has a shape as shown in FIG. 4, and is installed in the packing groove 37 of the fluid valve 3.
The outer diameter of the packing 5 attached to the fluid valve 3 is the same as that of the backing plate 14 of the frame 1 described above in an uncompressed natural state.
The inner diameter is larger than that of 16.

This fluid valve device S further includes a locking bolt 7 that is screwed into a bolt hole 18 of the perforated cylinder portion 10. The locking bolt 7 rotates its tip 7a backward when the fluid valve 3 is inserted into the perforated cylinder 10, and then rotates its tip 7a when the fluid valve 3 is installed at a predetermined position. The fluid valve 3 is fixed by moving it forward and engaging the upper surface edge of the upper disk portion 36 of the fluid valve 3. A cover 71 covers the locking bolt 7 in a watertight manner.

In such a fluid valve device S, the detent 3
8 engages with the bottom backing plate 15, the fluid valve 3 is held at the center of the perforated cylindrical portion 10, and the valve holes of the fluid valve 3 are aligned in a straight line with the existing pipe P and their central axes aligned. .

Next, the procedure for installing the fluid valve device S of this embodiment will be described (see FIGS. 5 and 6).

(1) At the fluid valve installation position of the existing pipe P, the present fluid valve device S with the upper cover 2 and fluid valve 3 removed is attached to the existing pipe P by contacting and joining the upper and lower halves thereof. Install watertight.

(2) As shown in Fig. 5, the perforated cylinder part 1 of this device S
A water control valve H for non-water cutoff work and a drilling machine I are watertightly attached to the upper part of 0 via a flange 13.
Thereafter, the working water control valve H is opened, and the cutter J of the punching machine I is inserted into the punching cylinder part 10 to cut the existing pipe P.

(3) Pull up the cutter J holding the cut piece of the existing pipe P to a position above the working water control valve H, and remove the drilling machine I with the water control valve H closed.

(4) As shown in Fig. 6, a valve insertion device K with a removable fluid valve 3 is installed watertightly on the work water control valve H, and the water control valve H is opened and the fluid valve 3 is inserted into the frame. It is inserted into the perforated cylinder part 10 of the body 1.

That is, the packing 5 on the side surface of the fluid valve 3 and the vertical backing plate 14 of the perforated cylinder part 10 are inserted so as to face each other, the packing 5 of the upper disc body 36 abuts against the backing plate 16 of the perforated cylinder part, and , until the packing 5 on the lower surface of the fluid valve 3 comes into contact with the bottom abutment plate 15 on the bottom surface of the perforated cylindrical portion 10 .

As a result, the detent 38 on the bottom of the fluid valve 3
engages with the bottom abutment plate 15.

(5) The locking bolt 7 penetrating through the cylindrical wall of the perforated cylindrical portion 10 is made to protrude from the upper end of the upper disc body 36 of the fluid valve 3 to prevent the fluid valve 3 from being pushed back by water pressure. .

(6) Disengage the fluid valve 3 and the valve insertion device K, and then remove the valve insertion device K and the working water control valve H.

(7) Fix the upper lid 2 to the flange 13 of the perforated cylinder part 1, insert the adjusting fitting 47 from the upper end of the valve stem 35 of the fluid valve 3, and fix the adjusting fitting 47 to the upper lid 2. At this time, when the valve stem 35 of the fluid valve 3 is misaligned, the adjusting movement of the adjusting fitting 47 allows accurate centering.

Through the above steps, the fluid valve installation work using the present device S is completed.

In the fluid valve device S installed in this way,
By rotating the valve stem 35, the ball 30
rotates 90 degrees and adjusts between fully open and fully closed as appropriate (usually used in fully open or fully closed state). In this fully open state, the housing 3
Since the opening edges of the valve holes 32A and 33A of No. 4 are close to the opening of the existing pipe P, the fluid flows smoothly and does not become turbulent at this joint portion and cause fluid resistance.

In addition, although the ball 30 attempts to rotate due to the reaction force of the housing 34 as the ball 30 opens and closes, the rotation stopper 38 is engaged with the bottom cover plate 15, so that this is effectively prevented.

The present invention is not limited to the above-mentioned embodiment, and various design modifications are possible within the scope of the basic technical concept of the present invention. In other words, the following aspects are included within the technical scope of the present invention.

The opening edge of the valve hole in the housing 34 does not need to correspond to the shape of the perforation Q, and may be cut off in a straight line as usual.

C. Effects of the Invention The non-water-inserted fluid valve device of the present invention has the above-mentioned configuration and functions, and therefore has the following unique effects.

Since the fluid valve uses a ball valve type, the height of the valve is not as high as with a gate valve type, and unlike a butterfly valve type, there is no water head loss at the valve body when the valve is opened, and the valve body is Its presence does not cause any obstruction during cleaning.

The rotation stopper performs centering during the insertion operation of the fluid valve, and also prevents rotation during the opening/closing operation after the fluid valve is installed, and has various effects.

[Brief description of the drawings]

The drawings show an embodiment of the uninterrupted water insertion fluid valve device of the present invention, and FIG. A horizontal sectional view taken along line X-X in the figure, and Figure 3 is a horizontal cross-sectional view taken along the line Z--
A cross-sectional view taken along the Z line (partial side view), FIG. 4 is a three-dimensional view of one part of this device, and FIGS. 5 and 6 are process explanatory views. S... Uninterrupted water insertion fluid valve device, P... Existing pipe,
Q...Perforation part, 1... Frame, 2... Top cover, 3...
Fluid valve, 10... Perforated cylinder portion, 11... Opening, 14
... Vertical backing plate, 15... Bottom backing plate, 16...
Horizontal backing plate, 30...ball, 31...sheet,
32...Housing, 33...Housing lid body,
34... Housing body, 38... Rotation stopper.

Claims (1)

[Claims for Utility Model Registration] 1. A frame 1 having a perforated cylindrical portion 10, a top cover 2 that can be attached to and closes the opening 11 of the frame 1, and a top cover 2 that is inserted into the perforated cylindrical portion 10 of the frame 1. The perforated cylinder part 10 is installed perpendicular to the pipe axis of the existing pipe P, has an inner diameter larger than the outer diameter of the existing pipe P, and clamps the existing pipe P in a watertight manner. It has a bottomed cylindrical shape with an opening 11 at the top, and inside the perforated cylindrical part 10, there are vertical abutment plates 14 extending perpendicularly to both sides in the direction perpendicular to the tube axis, and the vertical abutment plates 14 are attached to the bottom surface. A bottom abutment plate 15 is connected to the plate 14 and passes through the center of the bottom surface, and a horizontal abutment plate 16 is fixed to the upper inner peripheral surface of the plate 14 and connected to the vertical abutment plate 14. , has a housing 34 that holds a ball 30 through a seat 31 and is made up of a housing body 32 and a housing cover 33, valve holes are formed in each of the ball 30 and the housing 34, and these valve holes are Existing pipe P
The housing lid body 33 has a valve hole and is attached to the side of the housing body 32, and the upper part 36 of the housing 34 is formed in a disc shape. , both sides and the bottom of the housing 34 in the direction perpendicular to the tube axis are formed in a rectangular shape opposite to the side and bottom of the perforated cylinder section 10, and the circumferential side, both sides and the bottom of the upper part 36 of the housing 34 have the A packing 5 is mounted opposite the vertical backing plate 14, bottom backing plate 15, and horizontal backing plate 16 in the perforated cylindrical portion 10, and is engaged with the bottom backing plate 15 of the perforated cylindrical portion 10 on the bottom surface of the housing 34. rotation stopper 38
An uninterrupted water insertion fluid valve device, characterized in that: is permanently installed. 2 The opening edge of the valve hole of the housing 34 is connected to the existing pipe P
The continuous water insertion fluid valve device according to claim 1, which is formed along the shape of the perforated portion Q.