JPH04105187U - Sewer pipe inspection device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a sewer pipe inspection device that uses smoke inflow to detect routes, pipe breaks, incorrect connections, etc. of sewer pipes. [Structure] A smoke box 5 that accommodates a blower 3 and a smoke tube 4 mounted on the trolley body 1 is provided, a smoke bag 7 is connected to the air outlet 3b of the blower 3, and the smoke bag 7 is set in the manhole opening 16. The smoke from the smoke tube 4 is sucked in and blown by the blower 3 to inflate the smoke bag 7 and bring it into close contact with the wall surface. is raised above the ground along the channel of infiltrated water at the defective location of the pipeline to investigate.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a sewer pipe inspection device that uses smoke to inspect sewer pipes, etc. It is something.

0002

[Conventional technology]

In general, there are several methods for searching for routes such as sewer pipes, pipe damage, incorrect connections, etc. For example, seal the gaps between designated manholes with air plugs to prevent smoke from entering the pipes between them. This smoke is caused by cracks in pipes or defective joints. The infiltrated water that flows into this area flows through the waterway and flows out to the ground surface, and this smoke rises. It is known that it is possible to confirm abnormalities in the pipeline.

0003 However, in the past, there was no dedicated equipment of this kind, and for example, when carrying out construction work, the contractor had to go to the site. In each case, a circular iron plate or wooden plate cover b to be placed over the manhole a is made and At the same time as closing the manhole opening with cover b, a simple blower c is placed on top of this cover b to open the manhole. Air is blown into the hall, and the smoke from the smoke tube d, which has been placed inside the manhole and ignited, is passed through the pipe. e, and the smoke flowing into the damaged area was enough to confirm the abnormality (see Figure 6).

0004

[Problem that the idea aims to solve]

In this case, the shape of the cover to cover the manhole is large and heavy, so it takes 2 to 3 people to install it. It is troublesome to handle. In addition, smoke cylinders have a smoke emission time of about 3 to 5 minutes. Since there is only one available, you have to turn the blower and close the lid each time you ignite or replace the smoke tube. This work is inefficient as it requires removing it from the hole and entering the manhole each time. is forced. In addition, when closing this manhole opening (with a disc on which the blower is placed), As smoke easily leaks from the gap between the disc and the manhole, appropriate curing is required. There is.

[0005] In view of the above-mentioned circumstances, this invention is a smoke bag that is inflated by blowing air at the manhole opening position, etc. The above problem was solved by arranging the smoke source on the side of the blower which is outdoors. The purpose of this invention is to provide a sewer pipe inspection device that performs the following tasks.

[0006]

[Means to solve the problem]

This invention uses a smoke box with a smoke tube attached near the suction side of the blower mounted on the trolley body. At least a manhole opening or sewage outlet should be installed on the blowing side of the blower. Connect a smoke bag with an outlet that is sized to fit tightly when inflated to the pipe opening, and The base of the smoke bag is fitted into the manhole mouth edge, and the upper end protrudes from the ground. The guide passes through the lower prevention body.

[0007]

[Effect]

As mentioned above, move the unit truck equipped with this blower to the desired manhole. Place the main part of the smoke bag near your mouth and connect it to the blower's air outlet. facing the manhole mouth or sewer pipe mouth, and the edge of the manhole mouth is covered with a frame-type fall prevention body. The preparations are complete. Here, if you drive the blower and blow outside air to the smoke bag side, At the same time, open the smoke box on the side of the blower, ignite the smoke tube inside, and send this smoke toward the blower. Suction and blow air. This smoke is ejected from the smoke bag outlet into a manhole or into a sewer. Feed directly into the pipe. In this case, the main part of the smoke bag is inflated by outside air and smoke blowing force. Since it is in close contact with the manhole mouth wall or sewer pipe mouth wall, there is no leakage of smoke flowing inside. . The smoke that travels to the sewer pipes in this way is caused by so-called leakage points such as missing or incorrectly connected pipes. The infiltrated water travels through the waterways, rises, and flows out onto the ground surface, causing damage to the pipes. Abnormal locations can be confirmed.

[0008]

【Example】

Hereinafter, the present invention will be explained based on the drawings of embodiments.

[0009] Figures 1 to 4 show an example in which a smoke bag is used at the manhole opening, Reference numeral 1 denotes a push type trolley body with a plurality of wheels 2 attached to the lower end, and a blower is attached to the trolley body 1. - type blower 3 is installed, and a public hole is installed on the side near the suction port 3a of the blower 3. A metal smoke box 5 accommodating a plurality of smoke cylinders 4 is disposed, and the frame of the trolley body 1 is A removable connection to the air outlet 3b of the air blower 3 is provided in the tool box part 6 provided on the upper part of the air blower 1a. It stores the foldable smoke bag 7 etc. which is attached to the smoke bag. The shape of 7 is such that a duct cylindrical portion 8 facing the air outlet 3b is bent at one end base. The main part of the smoke bag has a flat width that allows it to come into close contact with the manhole opening 16 when inflated. It has a structure in which a bulging portion 9 is formed, and an air outlet 10 is provided at the tip of the bulging portion 9. 11 is an annular frame-shaped smoke bag that is attached to the rim of the manhole opening 16 and also serves as a float suppressor. The fall prevention body 11 has a central top portion 11a that protrudes from a predetermined height above the ground. It has a truncated conical frame shape, and the base end ring part 11b has a set that fits into the manhole mouth edge. A claw 12 is provided, and a part of the fall prevention body 11 is provided with a duct tube of the smoke bag 7. A guide opening 13 for guiding the section 8 is cut out. Unit type sewage as a whole This becomes a pipeline inspection device 14. 15 is a drive motor integrated on the outside of the blower 3 It is. By the way, the size of the smoke bag is, for example, a manhole with a diameter of 600φ. In use, the vertical length of the main body of the smoke bag is 800 mm, and the width of the bag is 800 mm when inflated. It has a flat width that fits tightly into the hole, and when the funnel-shaped lower end is inflated, the air outlet is 400φ. The hook-shaped duct tube has a horizontal length of 800 mm.

0010 Next, to explain this effect, it is possible to detect pipe breakage, incorrect connection, etc. of the specified sewer pipe 17. When conducting an inspection, first the trolley body 1, which is a unit type device, is installed near the manhole opening 16. Then, take out the folded smoke bag 7 from the tool box part 6 and store the smoke. Insert and connect the end of the duct cylinder part 8 of the bag 7 to the air outlet 3b of the air blower 3, and The bulging part 9 of the main part of the bag is made to hang down to the manhole opening 16, and An annular frame type fall prevention body 11 is fitted to the mouth edge of the duct 16, and the duct cylinder part 8 is inserted into the guide port 13. Let them guide you. In this case, the fall prevention body 11 is fixed by using the set claw 12 at the manhole opening. Slide it appropriately so that it comes into contact with the wall surface of No. 16. For example, this set claw 12 It is attached to a screw shaft 19 supported in an insertion hole 18 bored in the proximal annular portion 11b. A configuration is adopted in which the setting width is adjusted by the amount of feeding out with respect to the shaft 19.

[0011] Here, the motor 15 of the blower 3 is connected to a general power source or a separate engine generator ( (not shown) etc., the rotation of this fan draws air (outside air) to the suction port 3a. The smoke bag 7 is inhaled and fed from the air outlet 3b to the smoke bag 7. A set that inflates with wind pressure and attaches tightly to the wall of manhole opening 16 to prevent smoke leakage. do. After that, open the lid 5a of the smoke box 5 integrated on the side of the blower 3 and store it inside. By igniting the filled smoke cylinder 4 using a known ignition means and closing the lid 5a, the generated smoke will be released. It fills the inside of the smoke box 5 and flows into the suction port 3a of the blower 3 through the opening 5b bored in the front. Due to the negative pressure of the atmosphere, the smoke is forced to flow into the blower 3 from the suction port 3a. The water flows from the bag 7 through the air outlet 10 to the manhole and sewer pipe 17. However, this In this case, an air plug 20 is fitted in advance to the pipe opening on the non-inspection pipe side to stop the flow. The smoke from the pipes shall be discharged only to the side of the sewer pipe 17 to be inspected (see Figure 4). Also, this The fall prevention body 11 set at the manhole opening 16 that guides the smoke bag 7 is placed on the ground surface. Due to the high frame structure that protrudes more appropriately, the manhole opening can be seen from a distance. The location of 16 can be confirmed.

0012 Here, the smoke A that has progressed to the sewer pipe 17 may be caused by, for example, a pipe breakage at the pipe connection part 17a. If there was infiltrated water there, it would travel through this waterway B and rise up one by one and reach the ground. The smoke A will rise above. In other words, when you see smoke A appearing on the ground surface, It can be seen that there is a defect in the 17th section of the sewer pipe located below. Therefore, that part All you have to do is dig it up and make the necessary repairs.

[0013] FIG. 5 shows another embodiment in which the smoke inflow is routed directly to the desired drain. That is, in this case, the shape of the smoke bag 7 connected to the blower 3 is Insert that can be inserted into 17 and exhibits a long bag with a small diameter that can come into close contact with the tube wall surface when inflated. Let's call it bag 7'. The base of this insert bag 7' has a predetermined length formed separately. The configuration is such that a ventilation duct 21 having a diameter is connected to the air duct 21. This air duct 21 is also similar to the above. It is used through the guide port 13 of the fall prevention body 11 set in the manhole opening 16. At this time as well, when inspecting the pipeline, insert this insert bag 7' into the trolley body 1. Take out the tool box 6 and connect the insert bag 7' to the air outlet 3b of the blower 3. It is attached to the tip of the air duct 21. This insert bag 7' is a manhole The set is inserted into the sewer pipe 17 as appropriate by the worker who has entered the room. After this, In the same way as above, the blower 3 is driven to blow air, and the smoke box 5 is opened to release the air inside. When the smoke tube 4 is ignited, the smoke is sucked into the blower 3 and sent out from the blower duct 21 as described above. It flows out into the sewer pipe 17 from the outlet 10 of the insert bag 7'. Of course, this ventilation Upon impact, the insert bag 7' itself also swelled and adhered to the wall of the sewer pipe 17, causing smoke leakage ( This prevents backflow. Here, the smoke A flowing out from the insert bag 7' is connected to the sewer pipe. 17, and when it reaches the defective point, the infiltrated water rises along the channel and reaches the ground surface, as described above. It flows out onto the surface, so you can see where the defect is.

[0014]

[Effect of the idea]

As mentioned above, the sewer pipe inspection device of the present invention is equipped with a blower equipped with a smoke box. The smoke bag connected to the trolley body, the blower, and the droplet set at the manhole opening. By adopting a unit trolley-type configuration that combines the lower prevention body, it is easy to use during exploration. The trolley itself is placed next to a manhole near a designated sewage pipe, and a sumo bag that can be folded and stored on site is installed. Take out the bag and connect it to a blower and place it facing the manhole opening or sewer pipe opening. Both are easy to handle, just set an annular frame type fall prevention device at the manhole opening. After this, the smoke is forced into the manhole by driving the blower and igniting the smoke tube inside the smoke box. If there is inflow water from the ground surface in the sewer pipe, it will be transmitted to the infiltration waterway. As smoke rises above the ground, you can confirm for sure. This exploration confirmation also includes indoor Exploration of water pipe connection routes, incorrectly connected pipes (mainly in the case of branch type), confirmation of damaged pipes, and inspection of incorrectly connected pipes. It is possible to confirm clear holes and squares, as well as unknown pipes (mounted pipes, etc.). In this case, The smoke bag inflates at the manhole opening (or sewer pipe opening), making it easy to prevent smoke leakage. I can do it. In addition, the fall prevention device that also serves to prevent the small bag from slipping out is a raised ring. Because of the frame, you can see the location of the manhole opening even from a distance and prevent falls, which improves safety. It will also improve. This fall prevention body has a frame structure, so it is lightweight and easy to handle by one person. be. Furthermore, the number of smoke cylinders may be as many as necessary; Commercially available smoke tubes (car smoke tubes) can be used as the tube, which is easy to ignite and easy to replace. It has practical effects such as making it easier. In addition, this smoke box is designed to deal with the ignition heat of the smoke cylinder. Of course, it is possible to use a member that can be used.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of this invention.

FIG. 2 is a plan view of the smoke bag.

FIG. 3 is a side view of the fall prevention body.

FIG. 4 is an explanatory diagram of the state of use.

FIG. 5 is an explanatory diagram of the usage state of another embodiment.

FIG. 6 is an explanatory diagram of a conventional exploration method.

[Explanation of symbols]

1 Bogie body 3 Blower 4 Smoke bomb 5 Smoke box 6 Tool box section 7 Smoke bag 7′ insert bag 10 Air outlet 11 Fall prevention body 16 Manhole mouth 17 Sewer pipe

Claims (1)

[Scope of utility model registration request] Claim 1: A smoke box equipped with a smoke cylinder is installed in communication with the air blower mounted on the trolley body near the suction side, and the blower side is sized so that it will come into close contact with at least a manhole opening or a sewer pipe opening when inflated. This sewer pipe inspection device connects a smoke bag with an air outlet and guides the smoke bag through a frame-shaped fall prevention body whose upper end protrudes from the ground, with the base of the smoke bag fitted into the rim of a manhole.