JPS6231752Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a split T-shaped pipe with a valve for use in drilling work without water cutoff, and more specifically, to drill a hole in a fluid pipeline without water cutoff to provide a water control valve. A split T-shaped pipe with a valve is used to install a water control valve (hereinafter referred to as a work valve) in a split T-shaped pipe used for non-water cutoff construction work, and is integrated into the split T-shaped pipe to facilitate the installation of the water control valve. Concerning improvement of the tube. "Uninterrupted water supply" here is not limited to water only, but is a general term for carrying out construction under conditions where the flow of gas and liquid fluids is not stopped by a pre-installed stopper (main stopper). say.

[Conventional technology] Conventionally, work valves used in construction work to install water control valves under uninterrupted water conditions were
No. 20474, Actual Publication No. 16244 and Special Publication No. 16244-
A type in which the valve body is sent by rotating a threaded rod as seen in Publication No. 16647, etc., JP-A-48-92916
There are also types in which a flat plate-shaped valve body is directly inserted and removed (manually), as seen in Japanese Utility Model Publication No. 50-40328 and Japanese Patent Publication No. 51-336. Although each of these has its own advantages, the valve body opens and closes slowly and has poor workability, and in order to speed up the opening and closing operation, an additional power mechanism is required, making it larger and more labor-intensive. Because it relies on direct input, it is difficult to move the valve body in and out against water pressure, making it unusable with large valves, and the work space for moving the valve body in and out is larger than with conventional valves, making this work difficult. In order to secure space, underground construction requires a large amount of excavated soil, making it uneconomical. Furthermore,
Since these work valves are to be removed after the construction is completed, special measures must be taken for the T-shaped pipe and water control valve (for example, in order to attach the water control valve to the T-shaped pipe without interruption of water supply, the water control valve can be freely accessed and removed). There are drawbacks such as the use of an inserter that is housed in the valve and mounted on the work valve, etc., which complicates the mechanism and requires time and effort to operate.

[Technical issues of the present invention] In view of the above-mentioned circumstances, the present invention solves the drawbacks of conventional work valves for non-water cutoff construction, and provides a compact non-water cutoff drilling work in which the opening/closing operation of the valve body is quick and the work space is small and compact. The purpose (technical problem) is to provide a split T-shaped pipe with a valve for use.

[Configuration of the present invention] In order to achieve the above object, the split T-shaped pipe with a valve for use in continuous drilling work of the present invention has the following configuration. In other words, (1) a split T-shaped pipe for continuous drilling work installed in a fluid pipe that consists of a joint pipe part, a working valve box, and a working valve part, and (2) a joint pipe part that extends along the outer periphery of the fluid pipe. a saddle part that is placed vertically on the saddle part; a branch cylinder part that stands upright on the saddle part and has a hole therein that penetrates toward the fluid pipe; (3) The working valve box has a ceiling wall and side walls, and is installed and fixed in a bowl-like manner on the upper plane of the connecting pipe part, and forms a valve chamber with the upper plane. A hole corresponding to the hole of the branch cylinder part is bored on one side of the ceiling wall, and a lever shaft through hole is bored on the other side of the ceiling wall, and (4) a working valve part. (4-
1) A sliding groove is formed in the working valve body in a direction perpendicular to the opening/closing direction, and (4-2) the drive mechanism includes a lever shaft that is rotatably inserted into the lever shaft through hole of the working valve box, and a valve shaft. The lever comprises a lever that has one end fixed to the lever shaft indoors, the other end fixed to a lever pin slidably fitted in the sliding groove, and rotates around the lever shaft. do.

[Operation] This split T-shaped pipe is attached to the fluid pipe through the saddle part, and the work valve body is opened and closed in response to the drilling of the fluid pipe by the drilling machine and the insertion of the water control valve, thereby performing work without water interruption.

In the above work process, if the lever shaft attached to this split T-tube is rotated using an appropriate operating means (for example, a handle), the lever pin and the sliding groove will be slidably engaged, and the working valve body will be engaged. A thrust force is applied to the working valve body so that it slides linearly.

[Effects] The split T-shaped pipe with a valve for continuous water perforation work of the present invention has the above-mentioned configuration and functions, and therefore has the following unique effects.

The opening and closing operations of work valves during non-water cutoff construction work are quick, and work efficiency can be greatly improved.

The drive mechanism of the work valve is housed within the valve chamber, and therefore it is compact and does not take up much space, making it advantageous for underground work and other confined spaces. In particular, in the conventional working valve shown in Japanese Patent Publication No. 51-336, the operating rod of the working valve body protrudes outward and requires a large working space, but according to the present invention, the operating rod or Since the handle does not protrude outward, the working space is small, and therefore the amount of soil to be excavated is reduced.

By directly forming a part of the valve chamber with the upper plane of the joint pipe portion, the height from the axis of the fluid pipe to the working valve box can be made as low as possible. Therefore, it is possible to use a small drilling machine with a small working stroke for the construction work. Furthermore, since the height of the installed water control valve can be reduced, it can be conveniently applied to places where pipes are buried shallowly.

By lengthening the arm of the handle, the operation valve can be operated with a small amount of force, that is, by human power.

The water control valve can be installed by simply attaching it to the top of the split T-shaped pipe of the present invention, and there is no need to use an inserter or the like, and the installation operation is easy.

[Example] An example of the split T-shaped pipe with a valve for use in non-water supply drilling work of the present invention will be described based on the drawings.

P is an existing fluid pipe, and Q is a hole drilled in the fluid pipe P.

T is the split T-shaped pipe of this invention, and the joint pipe part 1,
It consists of an operating valve box 2 and an operating valve section 3.

The joint pipe part 1 consists of a saddle part 11 placed along the outer periphery of the fluid pipe P and a branch cylinder part 12 rising perpendicularly to the saddle part 11, and is formed at the circumferential end of the saddle part 11. The flange 11a formed at the end of the lower saddle 1' and the flange 71a' formed at the end of the lower saddle 1' are made to face each other (or abut each other) to tighten the bolt/nut 61.
By tightening the joint pipe portion 1 with the above, the joint pipe portion 1 is fixed to the outer periphery of the fluid pipe P. In addition, lower saddle 1'
It is also possible to fix it by a chain or a U-shaped bolt without using a chain, and the mode of fixing is free. A hole 12A penetrating vertically (or axially) is formed in the branched cylinder portion 12, and the diameter of the hole 12A is made larger than the outer diameter of the cutter described later, that is, the diameter of the perforation Q. Packing 13 is arranged on the lower surface of the saddle part 11 surrounding the hole 12A to keep the joint pipe part 1 and the fluid pipe P watertight. Reference numeral 14 denotes a tongue-like plate that extends in one direction from the upper part of the branch tube part 12 while keeping the same plane 15 as the upper surface of the joint pipe part 1.

The working valve box 2 is installed in the shape of a bowl on the top surface 15 of the joint pipe section 1, and consists of a bowl-shaped top surface, that is, a ceiling wall 21 and a side wall 22. The ceiling wall 21 has a branch pipe section 12 on one side. Hole 21A having substantially the same diameter as hole 12A
is drilled, and a screw hole 23 is screwed in a blind hole shape around the hole 21A. 24 is a lever shaft through hole bored in the ceiling wall 21. The working valve box 2 is fixed to the joint pipe part 1 by abutting the flange 25 stretched outwardly at the end of the side wall 22 against the edge of the upper surface 15 of the joint pipe part 1, and by inserting the bolt through hole 25a of the flange. This is done by screwing and engaging a bolt and a bolt/nut 62 into the bolt hole 16 of the connecting pipe section 1. As a result, a valve chamber 2A is formed inside the working valve box 2 in which a working valve body (described later) is slidably accommodated.

The working valve section 3 consists of a working valve body 31 and a drive mechanism 32 that operates the valve body, and the valve body 31 is placed in sliding contact with the upper surface of the joint pipe section 1 and occupies approximately half the plane of the valve chamber 2A. and slides linearly, and completely closes the hole 12A of the connecting pipe portion 1 when the valve is closed. An elongated groove 311 is formed near the rear corner of the valve body 31 at right angles to the sliding direction of the valve body. The drive mechanism 32 includes a lever shaft 321 and a lever 3.
22, consisting of lever pin 323, lever shaft 32
1 and the lever 322 are fixedly engaged, and the lever 32
2 and the lever pin 323 are fixed or rotatably fixed. The valve body 31 can be opened and closed by rotating the handle H engaged with the joint part 321a of the lever shaft.
22 rotates and applies thrust to the valve body 31 to a lever pin 323 attached to the tip of the lever. Since the lever pin 323 is fitted into the sliding groove 311 of the valve body 31 so as to be movable in the direction perpendicular to the opening and closing direction of the valve body, the thrust applied to the lever pin 323 is transmitted only in the opening and closing direction of the valve body. The valve body performs a linear sliding motion. In this embodiment, the sliding groove 311 is located near the outer end of the valve body 31 and the lever 3
22 is made as long as possible and the length of the sliding groove is shortened, but the position of the lever shaft, the length of the lever, and the position of the sliding groove are selected as appropriate. In short, the movement range of the lever overlaps the movement range of the valve body 31 in the thickness direction within the valve chamber 2A, and the drive mechanism 32 is housed compactly in the working valve box. Become. In addition, the lever 32
The valve body 31 is opened (or closed) by one movement of 2, and the opening/closing operation is quick, and the longer the arm length l of the handle H is, the smoother the valve opening/closing is with a smaller force. Ru.

A packing 26 is arranged on the inner surface of the working valve box surrounding the hole 21A to keep the valve body 31 watertight when the valve is closed. Reference numeral 27 denotes a communication hole provided in the working valve box that communicates with the groove 17 carved in the upper surface 15 of the joint pipe section, and the other end opens into the inner surface of the hole 21A. A sub-valve 29 operated by a lever 28 is interposed in the middle of the communication hole 27 . (Normally kept in the closed state).

Next, we will describe the drilling procedure and water control valve installation procedure using the above-mentioned split T-shaped pipe in a state where water is not cut off.

The split T-shaped pipe T of the present invention, which has been assembled in advance, is firmly attached to the water control valve installation position of the fluid pipe P via the lower saddle 1'.

A punching machine 4 is attached to the upper part of the split T-shaped pipe.

Open the valve body 31 of the split T-shaped pipe and open the drilling machine 4.
A hole Q is made in the fluid pipe P using the cutter 41 .
Fluid from the fluid pipe P during drilling operation fills the casing 42 of the drilling machine 4 and is discharged to the outside together with chips.

After drilling Q, the cutter 41 is pulled up above the position of the work valve 31, and after the work valve 31 is closed, the drilling machine 4 is removed.

A water control valve 5 containing a water control valve body 52 in a valve cover 51 is attached to the upper part of the split T-shaped pipe.

The working valve body 31 of the split T-tube is opened, and the feed rod 53 is rotated by the handle h of the water control valve 5 to lower the water control valve body 52. Working valve body 31
If the sub-valve 29 is opened and fluid is sent into the valve cover 51 of the water control valve 5 before the valve is opened, the working valve body 31
The pressure around the valve is equalized, and the opening operation of the working valve body 31 is performed smoothly. Further, a guide flange 54 is stretched in the radial direction on the upper part of the water control valve body 52, and the tip of the guide flange 54 engages with and is guided by a guide groove 51a formed in the axial direction on the inner surface of the valve lid 51. As a result, the water control valve body 52 slides only up and down without rotation.

When the water control valve body 52 completely blocks the flow of the fluid pipe P and the flow of fluid into the valve cover 51 stops, the handle h of the water control valve 5 and the handle H for the working valve are removed. The water stop function of the water control valve body 52 is achieved by a rubber plate 5 attached to the lower peripheral surface of the valve body.
5 is pressed down into the fluid pipe P and expands to close the fluid pipe line, and the gasket 522 attached to the outer periphery of the lower surface of the collar 521 of the valve body is pressed against the outer surface of the fluid pipe P around the perforation Q. It is done by.

In the above work procedure, when installing the water control valve, there is no need to use extra materials such as an insertion machine that can accommodate the water control valve so that it can be moved in and out, and is attached to the work valve, and the water control valve can also be a standard one. should be kept in mind.

The present invention is not limited to the configuration of the above-described embodiment, and various design modifications are possible within the scope of the basic technical concept of the present invention.

Split T with a valve for continuous water perforation work according to the above embodiment
The tube has the following characteristics.

The opening and closing operations of work valves during non-water cutoff construction work can be done quickly, increasing work efficiency.

The work valve mechanism is compact and does not take up much space, making it advantageous for underground work and other confined spaces.

By lengthening the arm of the handle, the operation valve can be operated with a small amount of force, that is, by hand.

The water control valve can be installed by simply attaching it to the top of the split T-shaped pipe of the present invention, and there is no need to use an inserter or the like, and the installation operation is easy.

[Brief explanation of the drawing]

The drawings show the valve-equipped split T-shaped pipe for continuous water perforation work according to the present invention. Figure 1 is a partially longitudinal side view with a drilling machine attached, and Figure 2 is a partially cutaway plan view with a water control valve attached. 3 is a partially longitudinal side view of the state in which the flow is blocked by the water control valve, and FIG. 4 is a cross-sectional view of the state shown in FIG. 3. P...Fluid pipe, Q...Perforation, T...Split T-shaped pipe with valve for continuous water perforation work, 1...Connection pipe part, 11
... Saddle part, 12 ... Branch cylinder part, 14 ... Tongue plate, 2 ... Working valve box, 2A ... Valve chamber, 3 ... Working valve part, 31 ... Working valve body, 311 ... Sliding moving groove, 3
2... Drive mechanism, 321... Lever shaft, 322...
...Lever, 323...Lever pin.

Claims (1)

[Scope of Claim for Utility Model Registration] In a split T-shaped pipe for non-drainage drilling work that is installed in a fluid pipe P and is comprised of a joint pipe section 1, a working valve box 2, and a working valve section 3, the joint pipe section 1 is a fluid A saddle part 11 placed along the outer periphery of the pipe P, a branch cylinder part 12 that stands upright on the saddle part 11 and has a hole 12A penetrating inside toward the fluid pipe P, and the branch cylinder part The working valve box 2 includes a tongue-shaped plate 14 that extends in one direction while keeping the same plane 15 as the upper surface of the valve box 12. The working valve box 2 has a ceiling wall 21 and a side wall 22.
It is installed and fixed in a bowl-like manner on the upper plane 15 of the joint pipe part 1, and together with the upper plane 15 constitutes a valve chamber 2A.
A hole 21A corresponding to A is bored, and a lever shaft through hole 24 is bored in the other side of the ceiling wall 21. Working valve body 31 that slides in a straight line.
and a drive mechanism 32 that operates the working valve body 31, a sliding groove 311 is formed in the working valve body 31 in a direction perpendicular to the opening/closing direction, and the driving mechanism 32 operates the working valve body 2. Lever shaft 3 rotatably inserted into lever shaft through hole 24
21, one end is fixed to the lever shaft 321 in the valve chamber 2A, and the other end is fixed to a lever pin 323 which is slidably fitted into the sliding groove 311,
A lever 322 that rotates around the lever shaft 321
A split T with a valve for continuous water perforation work, consisting of
jitube.