JPS5942194B2 - Fluid control valve installation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for installing a fluid control valve by cutting out a part of the pipeline inside a sealed casing and connecting both sides of the fluid control valve to the cut part inside the casing. It is related to the device.

This type of water-interruption construction method has the advantage that after the valve is installed, the entire casing can be removed from the installation location, leaving only the valve, and the entire casing can be used repeatedly. Since the fluid control valve is connected to the
It is technically difficult to do this from outside the housing, and no one that can be used in reality has been proposed.

For example, according to US Pat. No. 1,174,342,
A relatively wide pipe is cut out, and a relatively long split ring is slidably fitted to one pipe end of the cut part for the fluid control valve to be inserted into the cut part. A method has been proposed in which a fluid control valve is pushed into one connection part, and at the same time the entire valve is pushed out to the opposite side, and the other connection part is pushed into the opposite pipe end to make the connection on the Japanese side.

Therefore, in order to carry out this means smoothly, it is an object of the present invention to provide an efficient device for cutting and removing a pipe of a certain width in the middle of a pipe.

The fluid control valve installation device of the present invention includes a casing that has a water control valve and is attached to the pipe in a watertight state midway along the pipe, and a casing that is installed in the middle of the pipe within the casing with a constant width. a cutting machine for cutting;
The cutting machine is carried out to the cutting location, and the fluid control valve is removed. In a fluid control valve installation device that is provided with an insertion mechanism, the cutting machine is provided with a screw member for fixing the pipe,
The first feature is that the housing is provided with a cutting machine fixing device opposite to the screw member.

Therefore, it has the following effect.

(i) The cutting machine is fixed to the pipe with a screw member, and during cutting, the cutting machine fixed to the pipe is further fixed to the housing by a cutting machine fixing device.

(11) After the pipe is cut, the cutting machine and part of the pipe, which are floating in the housing and fixed by the cutting machine fixing device, are both removed from the housing and carried out.

The following effects can be obtained by the above action.

■ The cutting machine that is fixed to the pipe of a certain width to be cut is fixed in the housing by the cutting machine fixing device, so it can stably hold a part of the pipe during and after the cutting process, and it is also possible to cut stably. Therefore, work errors can be reduced.

@ After cutting the pipe, the cutting machine and part of the cut pipe can be taken out at the same time, improving work efficiency.

Next, the configuration of the apparatus according to the present invention will be explained based on each process shown in FIGS. 1 to 12.

First, Figure 1 shows that in order to install a fluid control valve, an arbitrary place is dug to expose the main pipe 1, a concrete base 2 is installed at the bottom of the excavation, the foundation ground is hardened, and a split joint ring is attached to the main pipe 1. 3
, 3 are attached.

As shown in FIG. 13, the split rings 3, 3 have O-rings 4, 4 at both ends thereof.

At this point, a water pressure test is conducted to check the sealing condition of the split joint rings 3, 3.

If the result is good, the lower case 5 is installed via the support stand 6 as shown in FIG.

As shown in FIG. 14, the lower case 5 is provided with a base 8 having two fitting holes 7, 7 at the bottom of the main body 5a, and a flange portion protruding along the main pipe 1. It has 9,9.

Reference numeral 10 denotes a guide groove provided at the center of the lower case main body 5a perpendicular to the main pipe 1, and provided at both ends of the main body 5a.

The lower case 5 is installed by suspending it upside down from above the main pipe 1 using a hanging machine such as a crane, and bringing the flange portion 9.9 into contact with the main pipe 1. 1
Attach the band member to the flange part 9 with bolts etc. to surround the flange part 9.
The bolts are tightened and turned over while adjusting the tightness of the bolts.

Then, as shown in FIGS. 3, 13, and 15, the cutting machine 11 is installed at the cutting position of the main pipe 1 within the main body 5a of the lower case 5.

The cutting machine 11 is divided into upper and lower halves 11a and 11b, which are attached individually, and then integrated into one piece by a connecting member 12 and the like.

It has guide flanges 14 slidably fitted into guide grooves 10 continuous to the intermediate case 13 on both sides thereof, and has a lower half part 11a.
A projecting member 15 having a circumferentially tapered shape is provided to fit into the fitting holes 7, 7 of the bottom base 8 provided in the lower case 5.

The guide collar 14 positions the main pipe 1 of the cutting machine 11 in the axial direction with respect to the lower case 5, and the protruding member 15
determines its level position.

Also, the lower case 5 can be connected to the main pipe 1 by adjusting the stand 6.
positioning is performed.

The intermediate case 13 has flanges 16, 16 similar to those of the lower case 5, and is mounted on the lower case 5 (see FIG. 4).

Further, the cutting machine 11 has a cutting tool drive device A.

The cutting tool driving device A has a cutting tool 18 installed on a gear 17 that rotates around the entire circumference of the main pipe 1 on both sides perpendicular to the main pipe 1 of the cutting machine 11. Two pieces (there is no need to limit the number) are attached facing each other.

The distance between the cutting tools 18 at both ends at the upper end position is set to be larger than the distance between the cutting tools at the lower end position.

This is to facilitate removal of the cutting machine 11 and the cut pipe in consideration of the main pipe 1 being turned back after the main pipe 1 is cut.

19 is connected to a driver which will be explained later, and a bevel gear 20
．． 21 receives the power from the driver, and the chain 2
This is a small gear for transmitting information to the gear 17 via the gear 17.

A cam member 23 supplies a feed amount to the cutting tool 18, and each time it engages with a pin member 24 fixed to one end of the cutting machine 11, the cam member rotates a predetermined amount to supply the cutting tool 18 with a feed amount of one pitch.

However, the cam member 23 and the cutting tool 18 are fixed to the gear 17, and the pin member 24 is fixed to the cutting machine 11, and the engagement between the two occurs once per rotation of the gear 17.

By the way, once the position of each part with respect to the main pipe 1 has been determined as described above, the gland retainers 25 and 25 are attached to each flange part 9 of the lower and intermediate cases 5 and 13, as shown in FIGS. 5 and 13. Install at 16.9°16.

This gland presser 25.25 is connected to the main pipe 1 and the lower case 5.
A sealing member 26, 26 installed between them is pressed to perform a sealing action.

27゜27 is the main pipe 1 via the gland presser 25, 25.
A split joint ring-setter is used to push the split joint rings 3, 3 installed in , body 2
7a and a rod member 28.

The rod member 28 is threadedly engaged with the split rings 3, 3 at the tip, and threaded and keyed with the main body 27a at the rear.

When pushing the split rings 3, 3, the main body 27a and the key fitting part 1 are screwed together, and if the rotating member 29 of the main body 27a is rotated, the rod member 28 is fixed by the key fitting. Since it is guided by the key groove, it moves straight and pushes the split rings 3, 3.

In order to remove the rod member 28 from the split rings 3, 3, the key fitting may be released and the threaded engagement may be unscrewed.

The split ring setter 27 is placed around the main pipe 1 in a predetermined manner and fixed to the main pipe 1 with bolts 30 or the like.

Next, as shown in FIG. 15, a plurality of pushers are attached to the lower and intermediate cases 5, 13 from the outside and are provided facing the screw members 32 for fixing the main pipe 1 provided on the cutting machine 11. The cutting machine 11 is fixed to the cutting device 31.

To fix the cutting machine 11, insert the threaded rod 33 of the pressing device 31 while checking through the viewing windows 34 provided in the lower and intermediate cases 5, 13 according to the pressing device 31, and then insert the screw rod 33 of the pressing device 31 into the cutting device. This is done by crimping the screw member 32 of No. 11,
The screw rod 33 and the push-up device 31 constitute the cutting machine fixing device 4.

Once the cutting machine 11 has been fixed in the manner described above, the blind cover 35 is attached to the intermediate case 13 as shown in FIG. Check the seal status of each part.

If the result is good, the blind lid 35 is removed and water is drained from the drain port 36 of the lower case 5 using a pump or the like.

After that, the driver 3 is attached to the shaft 37 of the cutting machine 11.
8 is attached, the cutting tool drive device A of the cutting machine 11 is driven, and a test cutting of the main pipe 1 is performed.

Test cutting is carried out to approximately 2/3 of the wall thickness of main pipe 1 (7th
(see figure).

Then, remove the driver 38 as shown in FIG.
The water control valve 39 is attached to the intermediate case 13, the upper case 40 is attached to the water control valve 39, the upper cover 41 and the driver 38 are attached, and the driver 38 and the shaft 37 of the cutting machine 11 are connected through the intermediate shaft. Link.

As shown in FIG. 16, the water control valve 39 is composed of a valve box 39a, a valve 39b, and a drive device 39c for driving the valve 39b. In the above state, the valve 39b is open.

Further, a cam member (not shown) is provided in a part of the valve box 39a to lift the valve 39b upward to completely seal the valve 39b when the valve 39b is closed.

Reference numeral 10 denotes a guide extending to the guide 10 of the lower and intermediate cases 5 and 13, and the upper case 40 is configured in the same manner.

On the other hand, FIG. 17 shows the intermediate shaft 42. As shown in FIG.

Reference numeral 43 denotes an intermediate outer cylinder, which has a driver shaft 44 therein, and forms a universal joint 45 with the shaft 37 of the cutting machine 11.

An annular collar 40 that projects outward is provided at the lower end of the intermediate outer cylinder 43, and engages with an annular collar 48 that projects inward of the intermediate cylinder 47 that is screwed onto the outer cylinder of the cutting machine 11. .

In actual work, the intermediate shaft 42 is added by a worker entering the case through an opening/closing window (not shown) provided in the upper case 40.

When the driver 38 and the shaft 37 of the cutting machine 11 are connected, the driver 38 is driven to start main cutting of the main pipe 1.

At the time of main cutting, each case is filled with water, and water flows through the main pipe 1 especially through the lower and intermediate cases 5 and 13.

When the main cutting is completed, remove the driver 38 and cut the cutting machine 1.
1 and the cut part of the main pipe 1 at the same time, the intermediate shaft 42
is pulled up into the upper case 40 via the cam member, closes the valve 39b of the water control valve 39, and closes the valve 39b to the valve box 3 via the cam member.
Press the top of 9a to completely seal it.

Then, as shown in FIG. 9, the upper part of the upper case 40 is removed from the water control valve 39, the cutter 11 is removed, and a fluid control valve (see FIG. 11) 49 is installed in its place.

Guide flanges 14 similar to those of the cutting machine 11 are attached to both sides of the fluid control valve 49 and fit into the guides 10.1. or,
A circumferentially tapered projecting member 15 is attached to the lower part.

Next, in such a state, the upper case 40 is opened as shown in FIG.
is attached to the water control valve 39, the valve 39b of the water control valve 39 is opened, the fluid control valve 49 is lowered along the guide 10 of each case, and the protruding member 15 is attached to the base 8 of the upper case 5. Fit into the fitting hole 7.

However, since the centers of the cutting machine 11 and the fluid control valve 49 with respect to the axis of the main pipe 1 are determined to be the same, the center of the fluid control valve 49 is determined by the fitting of the guide collar 14 and the projection member 15. will match the axis of main pipe 1.

Once the position of the fluid control valve 49 is determined, the gland presser 25.
The rod members 28 of the split rings 27, 27 are operated in the manner described above via the split rings 25, and the split rings 3, 3 are pushed toward the cutting location.

As a result, the split rings 3, 3 have one end attached to the annular flange portion 50, 50 of the fluid control valve 49 configured to have the same diameter as the main pipe 1.
The other end fits into the main pipe 1.

By the way, O-rings 4, 4 are attached to both ends of the split joint rings 3, 3, and after all, the side joint rings 3.3 temporarily connect the fluid control valve 49 and the main pipe 1.

Incidentally, the above-mentioned operations are performed while being confirmed through viewing windows 34 provided in the lower and intermediate cases 5 and 13.

Then, as shown in Figure 11, drain the water in each case,
Disconnect the fluid control valve 49 and the intermediate shaft 42, and also remove the upper cover 41, upper case 40, water control valve 39, split joint ring setter 27.27, gland presser 25.25, intermediate case 13, and lower case 5 in this order. Remove each device, further remove the guide collar 14 attached to the fluid control valve 49, the protruding member 15, and other exterior parts, and tighten the split joint rings 3, 3 and the split joint push rings 53, 53 with bolts or the like. .

Finally, a protective concrete 51 is formed as shown in FIG. 12 to reinforce the cut portion of the main pipe 1, and an opening/closing mechanism 52 for the fluid control valve 49 is attached.

[Brief explanation of drawings]

1 to 12 are schematic diagrams showing the working process when using the device according to the present invention, FIG. 13 is a vertical cross-sectional side view showing the relationship between the main pipe, lower and intermediate cases, and the cutting machine, and FIG. 14
The figure shows a longitudinal side view of the lower case, Fig. 15 shows the longitudinal front view of Fig. 13, Fig. 16 shows a longitudinal side view of the water control valve, and Fig. 17 shows the attachment relationship between the intermediate shaft and the shaft of the cutting machine. FIG. 3.3... Split joint ring, 11... Cutting machine,
10, 14...Guidance mechanism, 27.28...
...Pushing mechanism, 39... Water control valve, 49...
... Fluid control valve, 50, 50... Flange part.

Claims (1)

[Claims] 1. A casing that has a water control valve 39 and is installed in a watertight manner with respect to the pipe 1 in the middle of the pipe, and a cutting machine 11 that cuts off a certain width in the middle of the pipe 1 within this casing. In a fluid control valve installation device that is provided with a mechanism for transporting the cutting machine 11 to the cutting location and inserting the fluid control valve 49, the cutting machine 11 is provided with a screw member 32 for fixing the pipe 1,
A device for installing a fluid control valve, wherein a cutting machine fixing device is provided in the housing so as to face the screw member 32.