JP2018053427A - Transportation path blocking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transportation path blocking device capable of blocking the transportation path as quickly as possible so as to prevent the risk in a case of mixing of dangerous impurities into the transportation path such as sewerage.SOLUTION: A bag body consisting of an elastic body capable of feeding and exhausting is adhesively provided to walls of the transportation path of liquid or gas, and by inflating the bag body by charging gas or liquid thereinto, the transportation path can be blocked.SELECTED DRAWING: Figure 1

Description

  The present invention relates to, for example, a conveyance path blocking device, and particularly, for example, a conveyance path such as a water pipe, a sewer pipe, a culvert pipe, an agricultural water pipe, a pipeline for mainly transporting liquids, or a pipeline for conveying gas. The present invention relates to a conveyance path blocking device provided on the inner wall of the machine.

  There may be a case where foreign matters are mixed into a transport path such as a pipe rod or a pipeline for transporting liquid or gas due to a sudden accident. For example, if chemicals, gasoline, or heated oil is mixed in water supply or sewerage, it may lead to serious dangers such as environmental destruction, human damage or fire. In such a case, it is necessary to quickly shut off the conveyance path and stop the conveyance of the foreign matter.

  When it is necessary to immediately shut off the transport path due to a sudden accident, it is not enough to open a part of the transport path and insert the shut-off device. It is necessary to install and install a shut-off device in the emergency and activate the shut-off device in an emergency.

  In the conventional conveyance path blocking, a blocking door is provided in the middle of the conveyance path, and this is operated by an electric motor or hydraulic pressure to block the conveyance path. However, a fairly rigid door structure and power are required to close the shut-off door perpendicular to the flow against the pressure of liquid or gas flowing in the transport path.

  In addition, normally, a blocking door having a size that crosses the conveyance path must be installed outside the conveyance path, and the installation location and installation work become enormous, and depending on the installation method, the flow path of the conveyance path There is a risk of disturbing.

  Furthermore, when an electric motor is used to open and close the shut-off door, there is a risk of a flammable explosion caused by electric sparks when flammable liquid or gas is mixed in the transport path.

  In view of the above limitation, in Patent Document 1, a plurality of frames that cross the conveyance path are provided, a bag made of an elastic body such as rubber is accommodated in the frame, and the bag is filled with fluid. The technical idea of expanding and blocking the conveyance path (flow path) is disclosed. According to this, the flow rate control of the conveyance path can be performed by adjusting the amount of fluid supplied to the bag body.

  Since there is no mechanical drive part like a conventional shut-off door and only the fluid is supplied to and discharged from the bag body, it can be estimated that there is no risk of ignition even if flammables are mixed in the transport path. Is done. However, since a large frame body that crosses the conveyance path is provided in the conveyance path, it becomes an obstacle to the fluid flowing in the conveyance path, and the fluid flow path is greatly disturbed. In particular, when a solid is also contained in a liquid such as a sewer, there is a possibility that it will be caught by the frame and obstruct the flow path.

JP 2003-41556 A

  In light of the above problems as described above, the present application describes a conveyance path blocking that can prevent danger by blocking the conveyance path as quickly as possible when a dangerous impurity is mixed in the conveyance path such as a sewer. It is an object to provide an apparatus.

  It is a second object to provide a conveyance path blocking device that makes it possible to prevent the blocking apparatus from obstructing the conveyance of the conveyance path as much as possible during normal times when the blocking apparatus is not operated.

  A third object of the present invention is to provide a conveyance path cutoff device that makes it possible not to use an electric motor that is inflammable in the conveyance path and to use as little as possible a metal machine operating part that may be oxidized or corroded. It is an issue.

  In order to solve this problem, the conveyance path blocking device according to the first aspect of the present invention is a bag body that can be supplied and discharged and is made of an elastic body that is disposed (closely) on the road wall of the conveyance path. It is comprised with the bag body which can be filled. According to such a configuration, it is possible to inflate the bag body by filling the bag body with a gas or a liquid and substantially block the conveyance path.

  In the said aspect, the 2nd aspect that the hollow substantially equivalent to the thickness at the time of the said bag body being non-expanded is provided in the road wall of the said conveyance path in which the said bag body is installed can also be taken. Even if this second aspect is the case where the first aspect is adopted, the bag body may not expand uniformly and the blocking effect may be diminished, or even when there is a risk of drooping or lifting when not in use In addition, the fluid resistance in the conveyance path can be further reduced.

  In the said structure, the 3rd aspect that the bag body which consists of a some elastic body divided | segmented along the conveyance direction of a conveyance path as a bag body can be taken can also be taken. According to such an aspect, when the plurality of bag bodies are inflated with each other, the sealing performance of the cross section is further increased, and the blocking effect is improved.

  In a 1st aspect, the 4th aspect which can further be equipped with the band which consists of a some elastic body installed toward a conveyance path wall from a part of bag body can also be taken. According to this aspect, not only can the effects similar to those of the second aspect be expected, installation work is easier, and further, the bag body is pressed against the pipe wall when not in use, so that the flow path obstruction is reduced. Can do.

  In any of the above aspects, if the bag body is provided with a plurality of supply / exhaust ports, the conveyance path can be quickly blocked from the supply / exhaust port.

  As another aspect of the present invention, when another conveyance path is connected in the middle of the conveyance path forming the conveyance path blocking device, the bag body provided at the connection portion between the conveyance path and the another conveyance path An opening may be provided in the connection portion, and the bag may be provided in the other transport path. According to this aspect, even in a state where another conveyance path is connected to the conveyance path, it can be easily inspected from the opening provided in the coupling portion, and can occur at the intersection of the coupling. It is possible to prevent or avoid the failure / deterioration of the transfer function of the transfer path.

  According to the present invention, the bag body is expanded by rapidly filling the bag body with a gas or liquid such as compressed air or carbon dioxide gas, and the conveyance path is suddenly cut off. There is no risk of fire because no electricity is used for shutoff, and there is no risk of failure due to corrosion because there is no mechanical working part.

  Furthermore, when the conveyance path blocking device of the present invention is not operating, it is in close contact with the road wall of the conveyance path, so that the fluid conveyance in the conveyance path is hardly hindered and the flow path is not disturbed.

It is an installation sectional view of a conveyance way interception device concerning one embodiment of the present invention. It is interception operation sectional view of a conveyance way interception device concerning one embodiment of the present invention. It is the example using the multiple bag body of the conveyance path interruption device concerning one embodiment of the present invention. It is another application example of the conveyance path interruption device concerning one embodiment of the present invention. It is an open conveyance path application example of the conveyance path interruption device concerning one embodiment of the present invention. It is equipment explanatory drawing of the conveyance path interruption device concerning one embodiment of the present invention. It is equipment explanatory drawing of the other conveyance path interruption | blocking apparatus which concerns on one Embodiment of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the following, the range necessary for the description for achieving the object of the present invention is schematically shown, and the range necessary for the description of the relevant part of the present invention will be mainly described. According to a known technique.

  FIG. 1 is a cross-sectional view when a conveyance path blocking device 100 according to an embodiment of the present invention is installed in a circular pipe-shaped conveyance path 1. The conveyance path blocking device 100 of the present invention includes a cylindrical bag body 2 and a supply / discharge device 7 for supplying or discharging gas or liquid to or from the bag body 2 and discharging it. The cylindrical bag body 2 is installed in close contact with the entire inner wall of the conveyance path 1, and the bag body 2 is provided with water supply / air supply and discharge / discharge ports 3 that communicate with the inside of the bag body. .

  A gas or liquid is supplied to or discharged from the cylindrical bag 2 by a supply / discharge device 7 having a compressed gas cylinder 5 and a gas / liquid feeding / discharging device 6 through a pipeline 4 at the supply / discharge port 3. Can do.

  The cylindrical bag body 2 is formed of a stretchable material such as neoprene rubber. When the conveyance path blocking device 100 is not in operation, gas or liquid is discharged from the bag body and the cylindrical bag body 2 is discharged. 1 contracts and comes into close contact with the wall of the conveyance path as shown in FIG. 1, so that the conveyance in the conveyance path is hardly hindered. As an actual equipment example of the present invention, the close proximity to the manhole 11 is preferable. Moreover, if the conveyance path wall of the part in which the bag body 2 is installed is depressed by a length corresponding to the thickness when the bag body 2 is not inflated, the fluid resistance in the conveyance path can be further reduced ( Not shown).

  FIG. 2 is a cross-sectional view showing a case where gas or liquid is sent to the cylindrical bag body 2 of the conveyance path blocking device 100 installed as shown in FIG. 1 and the cylindrical bag body 2 expands to block the conveyance path 1. FIG. The cylindrical bag 2 has a necessary and sufficient length in the transport direction of the transport path 1 so that the transport path 1 can be completely blocked.

  FIG. 3 shows a conveyance path using four bags (2-1 to 2-4) as another aspect of the present invention in order to prevent the occurrence of twisting when the single bag 2 of FIG. 1 is inflated. In this configuration, the blocking effect of 1 can be further enhanced. Of course, each bag is provided with a supply / discharge port 3 (3-1 to 3-4), and gas or liquid is supplied / discharged simultaneously. 3A shows a state in which the bag bodies 2-1 to 2-4 are attached to the conveyance path 1, and FIG. 3B shows a state in which the bag bodies 2-1 to 2-4 are inflated so that the conveyance path 1 is It shows the state of being cut off. The number of divisions of the bag body 2 may be increased or decreased depending on the diameter or shape of the conveyance path 1.

  In FIG. 4, the bag body 2 is singular, but a part of the single bag body 2 is connected to the conveyance path wall by an elastic body band B (B1 to B8) such as a spring or a rubber cord. The further another aspect which employ | adopted the structure which can improve the interruption | blocking effect of the conveyance path 1 by the effect similar to the bag body division | segmentation shown to (b) of (b) is shown. In this case, when the bag is not in operation, the bag body is firmly fixed to the conveyance path wall by the elastic band B, so that an effect of further reducing the fluid resistance is produced. Similarly to the bag body division of FIG. 3, the number of elastic bands B may be increased or decreased depending on the diameter or shape of the conveyance path 1. A plurality of supply / discharge ports may be provided in order to rapidly inflate the bag body.

  In the above description, the case where the present invention is applied to a closed conveyance path such as a pipe having a circular cross section is taken as an example, but it goes without saying that the cross section can be easily applied to various shapes such as a square shape or an ellipse. Absent. Further, the present invention can be easily applied not only to a closed conveyance path but also to an open conveyance path 51 such as a water distribution path as shown in FIG.

  Moreover, FIG. 6 shows that the installation work can be facilitated by equipping a part of the conveyance path in the large basket 10 in the middle of the conveyance path and mounting the conveyance path blocking device of the present invention with a bag attached to the extended part. FIG. The application examples shown in FIGS. 5 and 6 are all included in the technical idea of the present invention.

  FIG. 7 relates to another aspect of the present invention, and shows an example in which a conveyed product conveyed in the conveyance path flows backward. In the same manner as in FIG. 6, a conveyance path 71 that is an extension of both conveyance paths connected to the large basket is provided in the large basket 10 in the middle of the conveyance path, and a bag body 72 is installed on the inner wall surface of the conveyance path 71. By doing so, conveyance in either direction in the conveyance path can be blocked.

  In another aspect described above, an inspection conveyance path 73 is connected from the manhole 11 to the conveyance path 71 for inspection of the conveyance path 71. A bag 74 is installed on the inner wall surface of the inspection conveyance path 73 so that the inspection conveyance path 73 can be shut off in the event that there is a leakage of a conveyed product from the conveyance path 71. Of course, an inspection opening is provided at a connection portion between the conveyance path 71 and the inspection conveyance path 73, and an opening 75 is provided at the portion of the bag body 72. In order to make the actual operation of the example of FIG. 7 easy to understand, FIGS. 7A and 7B show the normal state and the expanded state of the bag body 72 and the bag body 74. Thus, either direction of the conveyance path 1 can be blocked, and the inspection conveyance path 73 can also be blocked.

  As described above, according to the invention according to the present application, it can be installed in the transport path at all times without hindering the transport of liquid or gas, and the transport path can be shut off immediately in an emergency. In addition, there is no risk of fire because only gas or liquid is supplied to the bag, and there is no concern about corrosion deterioration because there are no metal moving parts.

  Depending on the supply amount to the bag body, it is possible not only to block the conveyance path, but also to control the conveyance quantity, which can be applied to general maintenance of the conveyance path. As described above, the present invention is effective for environmental protection and disaster prevention, and also greatly improves the safety and workability of civil engineering, construction work, etc., while also dramatically improving economic efficiency, for various industries. It offers great benefits for the industry and has very large industrial applicability.

DESCRIPTION OF SYMBOLS 1 ... Conveyance path, 2 ... Bag body, 3 ... Supply / exhaust port, 4 ... Pipeline, 5 ... Compressed gas cylinder, 6 ... Feeding / discharging machine, 7 ... Feeding / discharging device, 10 ... Large bowl, 11 ... Manhole, 51 ... Open conveying path, 100 ... conveying path blocking device, B ... elastic band, 71 ... conveying path, 72 ... bag body, 73 ... inspection conveying path, 74 ... bag body, 75 ... opening

Claims (6)

  A bag body made of an elastic body that can be supplied and discharged and installed on a wall of a conveyance path through which liquid or gas is conveyed, and that substantially cuts off the conveyance path when filled with gas or liquid. A conveyance path blocking device comprising:   2. The conveyance path blocking device according to claim 1, wherein a depression substantially corresponding to a thickness of the bag body when not inflated is provided in a road wall of the conveyance path where the bag body is installed. apparatus.   The conveyance path blocking device according to claim 1 or 2, wherein the bag body is a bag body composed of a plurality of elastic bodies that can be supplied and discharged divided along a conveyance direction of the conveyance path. Transport path blocking device.   The conveyance path blocking device according to any one of claims 1 to 3, wherein a road wall of the conveyance path and a part of the elastic body are connected by a band.   The conveyance path blocking device according to any one of claims 1 to 4, wherein the bag body is provided with a plurality of supply / discharge ports.   When another conveyance path is connected in the middle of the conveyance path forming the conveyance path blocking device, an opening is provided at the connection portion of the bag body provided at the connection portion between the conveyance path and the another conveyance path. The conveyance path blocking device according to any one of claims 1 to 5, wherein the bag is also provided in the other conveyance path.

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