JPH10281387A - Means for constituting independent space in continuous space uniform in cross section - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily constitute an independent space in a continuous space, by connecting two shielding walls which has the same shape with the cross section of the space, with using the connection method, in the continuous space uniform in cross section is and by setting an independent space which is movable in the space and is different from the space. SOLUTION: By installing two shielding walls 2, 2 which have the same shape with the cross section of the space 1 with proper interval in the continuous space where cross section is even, for example, the cooling water pipe with large aperture in the power plant, and by combining the facing walls with a connecting material 3, an independent space 4 which is different from a space 1 is movably formed. To maintain the air-tightness or liquid-tightness of the slide face of both shielding walls 2, 2, a seal means 5 which expands due to pouring of pressure air is placed on the whole circumference of both shielding walls 2, 2. By installing a wheel 6 which touches to the ceiling, the inner wall of right and left side, and bottom side of the space and guides rotatably on inner or outer face of the shielding walls 2, 2 which constitute the independent space 4, the shielding wall 2 moves easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to a technical field related to a multipurpose independent space provided in a space main body having a continuous cross section.

[0002]

2. Description of the Related Art Conventionally, pigs and the like in pipeline cleaning have been put into practical use as a space that is different from the front and rear space atmospheres in a continuous space having a uniform cross section.
(For example, “Industrial cleaning agent and cleaning technology for users” published on April 30, 1981, Sanitation Technical Society, pp. 333-3.
(See “Pig washing” in 37.)

[0003]

The pig is useful for the single purpose of shutting off the entire continuous space and changing the environment of the space before and after, but for the purpose of forming a work space in the continuous space. It is not suitable as a means to create a third space.

[0004] It is an object of the present invention to improve the problems of the prior art and to provide an independent space that can be used for multiple purposes in a continuous space having a uniform cross section.

[0005]

The object of the present invention is to provide a space body having a uniform cross section and two blocking walls having the same shape as the cross section of the space body connected by a connecting means in a continuous space body having a uniform cross section. This is achieved by providing an independent space body different from the space main body that can move inside.

The above object is achieved by making the gas in the space main body and the gas in the independent space different from the gas or liquid before and after, and making the pressure substantially uniform.

The above object is achieved by providing a pressure difference between the pressure in the space main body and the pressure in the independent space in claim 1.

The above object is achieved by providing a self-propelled driving means in an independent space according to any one of claims 1 to 3.

The above object is achieved by any one of claims 1 to 4, wherein the independent space body is moved by a pulling means such as a wire rope.

[0010] The above object is achieved by any one of the first to fifth aspects of the present invention, in which the independent space body is moved using fluid pressure.

[0011] The above object is achieved by connecting the two blocking walls with connecting means capable of adjusting the expansion and contraction in any one of the first to sixth aspects.

The above object is achieved by providing a passage which is connected to the two blocking walls and communicates gas or liquid on both outer sides of the two blocking walls. Is achieved.

[0013]

Embodiments of the present invention in a continuous space having a uniform cross section will be described below with reference to the drawings.

FIG. 1 shows a space body 1 having a uniform cross section, such as a large duct or a large-diameter cooling water pipe of a power plant. The space body 1 has the same shape as the cross-sectional shape of the space body 1. In addition to disposing the two blocking walls 2 with an appropriate space therebetween, the independent space body 4 different from the space main body 1 in which the opposing wall surfaces of the both blocking walls 2 are connected by the connecting member 3 can be moved. It is installed internally. Note that the connecting member 3 naturally takes care not to restrict various operations inside the independent space body 4.

As shown in FIG. 1 and FIG. In order to maintain the air-tightness or liquid-tightness of the sliding surfaces of both blocking walls 2 constituting the independent space 4 with the inner wall surface of the space main body 1, both blocking walls 2 are provided.
Is provided with a sealing means 5 on the entire peripheral surface of. Although this sealing means 5 is not shown in particular, the sealing means 5 is configured to be inflated by injection of a pressurized gas, such as a tube, so that when the independent space body 4 moves, the compressed air is removed and the space means 1 is connected to the space body 1. It is possible to reduce frictional resistance and to use the pressure fluid at a set position for movement to enhance the sealing performance at that position. It is also possible to provide a labyrinth seal structure on the surface in sliding contact with the space main body 1 in the sealing means having a tube structure. As described above, since the sealing means 5 may have any configuration as long as the original purpose is achieved, it is not limited to the illustrated one.

On the inner surface or outer surface of the two blocking walls 2 constituting the independent space 4, wheels 6 are provided, which are in contact with the ceiling, the left and right sides, and the inner wall surfaces of the bottom surface of the space main body 1 to guide the rolling.

As shown in FIG. 2, a stand 7 having a bogie structure is provided below the inner surface or the outer surface of one of the blocking walls 2 constituting the independent space 4, and a drive for moving the independent space 4 to the stand 7 is provided. The device 8 is mounted. The driving device 8 is an electric type, a hydraulic type, an engine type, or the like, and is selected according to the environmental conditions of the independent space body 4 and the driving energy supply environment. In addition to the driving device 8, the gantry 7 maintains the atmosphere inside the space main body 1 and / or the independent space body 4 and increases and decreases the pressure (not shown), various measuring devices (not shown), and monitoring devices (not shown). ) And so on.

As shown in FIG. 3, as another mode of moving the independent space 4, one end of a wire rope 9 is connected to one side or both sides of the outer surface of one of the blocking walls 2 constituting the independent space 4. The wire rope 9 can be moved by connecting the other end of the wire rope 9 to a drive device such as a winch provided at a remote position so that the wire rope 9 can be wound and unwound. In this case, it is suitable when the space main body 1 is in an inclined or vertical posture.

FIG. 4 shows still another embodiment of the moving means of the independent space body 4, wherein the pressure of the gas or liquid pressure fluid 10 sealed in the space body 1 on either the left or right side of the independent space body 4. , The independent space body 4 can be moved. As described above, the moving means of the independent space body 4 with respect to the space main body 1
Since various means other than those shown in the drawings can be selected, the present invention is not limited to those shown in the drawings.

Although not shown, when the independent space body 4 is temporarily fixed to the space body 1, a cylinder having an outrigger structure which is operated by electric power, hydraulic pressure or air pressure is provided at an appropriate position on the peripheral edge of the two blocking walls 2. The independent space body 4 is fixed to a required portion of the space body 1 by pressing the tip of the cylinder to the inner wall surface of the space body 1 in a pressing manner, or a brake is provided in the driving device 8 to apply the braking force of the brake. Performed by

As shown in FIG. 7A, a link mechanism 3a is provided at an intermediate portion of each connecting member 3, and each connecting member 3 is uniformly bent by this link mechanism 3a to adjust the expansion and contraction.
The volume of the independent space body 4 is changed to be large or small, so that the independent space body 4 having a volume suitable for the work purpose can be formed. 3b is a cylinder in the figure. In FIG. 7b, instead of the link mechanism 3a, a plurality of cylinder type connecting members 3c are used.
Since the working space of the independent space body 4 can be adjusted by using (not shown), the connecting member 3 is not limited to the fixed type.

FIGS. 8 and 9 show a case where a passage is provided which is connected to the two blocking walls 2 and communicates gas or liquid on both outer sides of the two blocking walls 2. This configuration enables the independent space body 4 to meet the object of the present invention, and the communication path 11
Is provided to eliminate the pressure difference between the upstream and downstream of the space main body 1 and to allow the fluid flow.

[0023]

According to the configuration of the present invention as described above,
The following effects can be obtained. (A) While moving the independent space body with respect to the space body,
Work can be performed in the independent space or a work device can be mounted, and work on the inner surface of the continuous space can be performed efficiently without opening the continuous space to the atmosphere. (B) Since the space main body and the independent space body are kept airtight from each other by the sealing means, either the space main body or the independent space body is set to a high pressure, and a differential pressure space can be formed between the two. A pressure test, a leak test, and the like of the space main body can be performed without opening a continuous space, for example, by utilizing a pressure difference in the space or a difference in external pressure of the space main body corresponding to the independent space body.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a front view of an independent space body.

FIG. 3 is a front view showing a state in which the independent space body is moved by a wire rope.

FIG. 4 is a front view showing a state in which the independent space body is moved by a fluid.

FIG. 5 is a front view showing a pressure difference between the space main body and the independent space body.

FIG. 6 is a front view showing a pressure difference between the space main body and the independent space body.

FIGS. 7A and 7B are front views showing a configuration for adjusting the volume of the independent space body to be large or small.

FIG. 8 is a perspective view showing a form in which a communication path is provided in an independent space body.

FIG. 9 is a vertical sectional front view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Space main body 2 Blocking wall 3 Connecting material 3a Link mechanism 4 Independent space body 5 Sealing means 6 Wheel 7 Mount 8 Drive device 9 Wire rope 10 Pressure fluid

Claims (8)

[Claims] 1. A space body in which a continuous body having a uniform cross section is connected with two blocking walls having the same shape as the cross section of the space body by connecting means, and is movable in the space body. Means for forming an independent space in a continuous space having a uniform cross section, wherein an independent space body different from the above is provided. 2. A continuous space having a uniform cross section according to claim 1, wherein the gas in the space main body and the gas in the independent space are different from the gas or liquid before and after, and the pressure is made substantially uniform. A means to configure an independent space inside. 3. The means for forming an independent space in a continuous space having a uniform cross section according to claim 1, wherein a pressure difference is provided between the pressure in the space main body and the pressure in the independent space. 4. A means for forming an independent space in a continuous space having a uniform cross section, wherein the independent space body is provided with a self-propelled driving means. 5. An independent space in a continuous space having a uniform cross section, wherein the independent space body is moved by a pulling means such as a wire rope. Means to do. 6. A means for forming an independent space in a continuous space having a uniform cross section according to any one of claims 1 to 5, wherein the movement of the independent space body is performed using fluid pressure. 7. A means for forming an independent space in a continuous space having a uniform cross section, wherein the two blocking walls are connected by a connecting means capable of adjusting the expansion and contraction. 8. A passage according to claim 1, 2, 3, 4, 5 or 7, wherein said passage is connected to said two blocking walls and communicates gas or liquid on both sides of said two blocking walls. Means for forming an independent space in a continuous space having a uniform cross section.