JPS594483A - Washer for inner surface of existing piping - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe cleaning device, and more particularly to a ()-2 cleaning device for existing pipes suitable for use in cleaning the inner surfaces of existing pipes in chemical plants. It is something.

Conventionally, as a method for cleaning the inner surface of existing piping, as shown in FIG. The valve v
1 ・After removing the 72nd F of V, F, section, add a cleaning 6fC body (for example, d: river width air, high pressure water, etc.) into the pipe FA! l: (Shooting, Aoi d,
It is known that the cleaning fluid sprays sand grains and ice grains toward the inner surface of the pipe PA to remove dirt remaining or attached to the pipe FA.

However, with such conventional methods, 1.
There is a risk that the following problems may occur.

(1) There is a secret to removing the piping except for cleaning.
If you have finished cleaning, then the piping i1+ +(
If there is no need to connect c, work is often done (it tends to become L).

(2) In addition, in order to remove and connect the pipes mentioned above, it is easy to change the length of the pipe and the length of the pipe, and the length of the pipe during the downtime.

(In order to remove the piping and clean it, remove the dirt inside and 61': The clean water is likely to scatter to the outside.)

(4) Furthermore, 1 summer r-kaplant 4' chemical block 2
Welded the valve and the pipe to the existing piping at the port to reduce the flow of fluid transported through the pipe. However, the conventional cleaning method described above is difficult to apply because it is difficult to remove the piping and remove it.

Furthermore, as mentioned above. As a cleaning power method to solve the 1/f problem, a tube is attached to the tip of a hose with nJ flexibility (the injection nozzle is 11 inches long), 1〒,
jPO) Valve width adjustment of installed piping 11 CK; Form an opening 1-1 in the installed piping, and set tin 1. ”+'l I-
J tfl (Kara full Note 1j'f, b'M inside piping &CM'J M14 injection 5) J/ Nozzle tip and insert the port, and 11^ injection nozzle QV; installed piping. It is conceivable to inject 151-purifying fluid from the 1f injection nozzle while the vehicle is moving inside.

However, even with such a method, there is a risk that the following problems may occur.

In other words, MfJ tt+3 existing piping & 1L Ju 1 curved part exists, so hN curve 1 is present (
Limited to 11 minutes and 17-! cormorant.

However, since the injection nozzle σ) has to be manually inserted and moved, the movement speed of the injection nozzle becomes uneven, resulting in
: Easy to cause stains.

The present invention has been carefully designed in consideration of the circumstances described above, and its purpose C'1 is to enable cleaning of the inner surface 61 without removing the existing piping, and to avoid bending the existing piping. It is an object of the present invention to provide an inner surface cleaning device for cleaning the inside of an existing facility, in which the cleaning range is not limited even if the existing portion is used.

Hereinafter, the present invention will be explained based on an embodiment VC shown in FIGS. 2 to 4.

The outline of this embodiment will be briefly explained with reference to the 21st section.

The device for cleaning the inner surface of existing piping (hereinafter simply referred to as the cleaning device) shown in this practical hfli example is one of the two valves V, . From the opening 11 part 1 formed by removing the valve cover of the h++ resistance 1, the installation'? A cleaning fluid supply hose (1), a lower tp K supply hose and a
+13) 3 and the feeding and pulling of the supply hose 3 b
y-shaped transfer device 54 and the other one of the valves V! from the opening 5 formed by removing the valve cover of the front MT712L.
It is composed of a traction wire 6 inserted into the crotch pipe P and hooked onto the nozzle 2, and a traction device 7 that sends out and pulls back 7 the traction wire 6.
After the nozzle 2 is pulled by the Nlt traction wire 6 and the traction device 1 in the vicinity of the other valve V, the nozzle 2 is pulled together with the supply port 3 by the transfer device 4 to the other valve V. The cleaning fluid is sprayed from the nozzle 2 while being pulled back at a constant speed to clean the inside surface of the existing pipe P.

Next, to explain these 411 VCs in detail, they are made of a material that can withstand the internal pressure when pumping the 6I2 clean tIL body and has flexibility. A nozzle 2 is attached to the tip of the supply hose 3 via a support device 8.

The supporting device (H, 8 to t) 1, the order of travel ``1-La 9・(
!・They are arranged radially, and the running rollers 9, 9,
...was before flr; l! In order to avoid sexual contact with the inner surface of the U crotch pipe arrangement, maintain a gap between the outer periphery of the support device 〆/, 8 and the inner surface of the existing arrangement 7P, and install the front n+ side nozzle 2 in the existing arrangement. It is designed to be lowered to the center of the pipe P.

The transfer device 4 includes a base plate 10 fixed to the 7 flange F for fixing the valve lid of the A1J valve v1 so as to close the joint 101, and a support leg 11 attached to the base plate 10.・
11 and which pinch and transfer the supply hose 3 from both sides] 2 and 12, and the front! The transfer roller 12.1 is provided on the top of the substrate 10.
Rotating one of the two pins μJ < dynamic moke 13 and the front Fi
It is composed of a plurality of guide rollers 14, 14, .

The drive morph 13 and the transfer roller 12 are connected by a belt B, and the guide rollers 14 are rotated by support legs 15 provided at the bottom of the substrate IO. freely supported.

The pulling wire 6 is made of an elastically deformable material such as a steel wire, and the tip of the pulling wire 6 is hooked onto a hook 16 provided on the support rack [8]. There is.

The traction device 7 is connected to the other valve V! A flange F4 (/C1) for fixing the valve lid includes a base plate 17 fixed to close the opening 5, and a support leg 18/1 above the base plate 17.
transfer rollers 19 and 19 which are provided through the substrate 17 and which transfer the pulling wire 6 by sandwiching it from both sides; and a drive motor 20 which is provided on the upper part of the substrate 17 and which rotates one of the transfer rows 219 and 19. and a guide roller 22 which is provided below the substrate 17 via support legs 21 and guides the pulling wire 6.

Next, a case in which the inner surface of the existing pipe P is cleaned using the cleaning apparatus having the above-described configuration will be described in 9 below.

First, before starting the cleaning work, both valves v of the existing piping P should be
1 ・Remove the valve cover of V and open it [1 part 1°5 is formed. Next, the traction wire 6 is inserted between the transfer rollers 19 and 19 of the traction device t7, and the tip of the traction wire 6 is inserted into the existing pipe P from the gap [1s5 and directed toward one valve After the wire 6 is hooked onto the guide row 222 of the traction device 70, the traction device 7 is fixed to the flange F14.

In this way, the traction wire 6 and the traction device 7 are connected to the valve V2.
Then, drive the drive motor 20 of the traction device 7 and insert the tip of the traction wire 6 into the opening l of one valve V.
Send it to. In the process of transferring the traction wire 6, even if there is a bent portion in the existing piping P, the traction wire 6 deforms along the bent portion due to its own elasticity. There is no risk that the transfer of 6 will be obstructed.

Then, the tip of the pulling wire 6 that has been fed to the opening 1 of one valve v1 is pulled out from the opening 1, and the transfer rollers 12, 12 and guide rows 214, 14, ...Hang the hook 16 of the support device 8 inserted between the two.

Next, the drive motor 20 of the traction device 7 is reversed to gradually pull back the traction wire 6, and the support device 8
is inserted into the existing pipe P from the opening 1 toward the other opening 5, and then the traction wire 6 is inserted by the target traction installation 7.
At the same time, the transfer device 4 is fixed to the flange F of the valve v1. When the transfer device 4 is fixed to the 7 langes F and the nozzle 2 is set in the existing piping P together with the support device 8, the supply hose 3 or the transfer rollers 12 and 12 of the transfer device 4 and the guide It is supported between rows 714 and 14.

From this state, the pulling wire 6 is pulled back by the drawer [7] again, and the nozzle 2 is pulled together with the support device 8 to the vicinity of the other valve V, and the cleaning is started in the down position.

Next, the cleaning fluid supplied from the supply hose 3 is passed through the nozzle 2.
The inner surface of the existing pipe P between the two valves V and -Vt can be cleaned by injecting it toward the 11th surface of the existing pipe P and pulling back the supply hose 3 using the transfer device 4.

Also, if you need to wash several times, use nozzle 2.
The transfer device 4 and the traction device 7 are pulled while the cleaning fluid is continuously sprayed by the t! By performing the return operation alternately, the nozzle 2 may be moved back and forth within the existing pipe P a desired number of times.

It goes without saying that when cleaning, not only the cleaning fluid but also various media such as sand grains or ice grains may be sprayed using the cleaning fluid.

As explained above, the apparatus for cleaning the inner surface of existing piping according to the present invention is a cleaning device that is movably inserted into the existing piping from one of the openings of the existing piping, and is provided with a nozzle at its tip that sprays cleaning fluid. A fluid supply hose, a transfer device that sends out and pulls back the cleaning fluid supply hose, and is inserted into the existing piping from another one of the openings of the existing piping and is not hooked to the nozzle. A traction wire and a traction device that sends out and pulls back the traction wire, and after the nozzle is pulled to a cleaning start position by the traction wire and the traction device, the nozzle is pulled back by a transfer device while cleaning is performed. If you do this, you will get the following excellent rice effects.

■ Since the cleaning work is performed while the cleaning device is installed using the openable/closable opening of the existing piping, cleaning can be performed without removing the existing piping. Therefore, it is possible to eliminate the need for the work of reinstalling the piping while it is being removed, and the cleaning work time can be shortened.

@ Since cleaning can be carried out without removing the piping, it is possible to perform the work in parallel with other inspection work, which not only shortens cleaning time, but also allows maintenance and maintenance of existing piping. The overall work time, including the time required for inspection, can be significantly reduced.

θ Prevents clean fluid + dirt from existing piping from scattering to the outside, preventing contamination around the existing piping.

Even if there is a bend in the existing piping, the nozzle can be pulled to the desired position, which prevents the cleaning range from being limited by the bend.

B) Since the nozzle can be fed at a constant speed and the nozzle can be easily moved back and forth a desired number of times, it is possible to prevent uneven cleaning and perform reliable cleaning.

[Brief explanation of drawings]

In the drawings, Fig. 1 is a schematic diagram for explaining a conventional cleaning method, Figs. 2 to 4 show an embodiment of the present invention, Fig. 2 is a longitudinal sectional view, and Fig. 3 is a schematic diagram for explaining a conventional cleaning method. is III-II in Figure 2.
FIG. 4 is a view along the tv-tv line in FIG. 792. DESCRIPTION OF SYMBOLS 1... Opening part, 2... Nozzle, 3... (cleaning fluid) supply hose, 4... Transfer device, 5... Opening part, 6
... Traction wire, 7... Traction device, 8... Support device, 9... Traveling roller, lO... Substrate, 11...
Support leg, 12... Transfer roller, 13... Drive motor, 14... Guide roller, 15... Support leg, 16...
・Hook, 17... Board, 18... Support leg, 19.
... Transfer roller, 20... Drive motor, 21... Support leg, 22... Guide roller, P... Existing piping, ■,
・V,... Valve, F, ・F4...72 inch, B...
belt. Applicant: Ishikawajima Harima Heavy Industries Co., Ltd. Applicant: Nanio Blast]: Nippon Co., Ltd. Figure 3 Figure 4

Claims (1)

[Claims] 1'f, openings 1 that can be opened and closed at multiple locations on the crotch pipe
In a cleaning device designed to clean the inner surface of the pipe, the cleaning fluid is inserted into the existing pipe from one of the opening parts by injecting cleaning fluid into the existing pipe. a cleaning fluid supply hose having a nozzle at its tip for spraying the cleaning fluid; a transfer device 'fl for sending out and pulling back the cleaning fluid supply hose;
a traction wire inserted into the installation pipe from another one of the openings 11 and hooked onto the nozzle;
An apparatus for cleaning the inner surface of existing piping, comprising a traction device for sending out and pulling back the traction wire, where /l=number of strokes.