Placement method of water plugging air bag

Abstract

In daily dredging and maintenance construction of a municipal rainwater and sewage pipe network, water plugging is generally needed to be carried out on the upstream and downstream of a pipeline and a branch pipe. At present, basically, divers are required to adventure to enter a well to place air bags. Through combination of various devices and cooperation of ground constructors, the air bag can be placed in a set position in a pipe on the ground, divers do not need to go down a well, the working efficiency is improved, the production cost is reduced, and the safety risk is reduced to the minimum.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline plugging, in particular to a method for placing a water plugging air bag. BACKGROUND

[0002] In the daily dredging and maintenance construction of municipal rainwater and sewage pipe network, the upstream and downstream of the pipeline and branch pipes usually need to be water-plugged to prevent water from entering the construction pipe section and affecting the construction and endangering the safety of the underground construction personnel. At present, placing an air bag, especially in a water-filled sewage inspection well, basically requires a diver to enter the well to feel the position of the pipe opening and then put the air bag into the pipe. Due to the narrow space and low visibility of the inspection well, as well as the turbulent water flow, these all pose a great risk to the safety of the diver.

[0003] Especially for many old inspection wells, which are "horseback skylight wells", that is, a small opening is opened on the top of the pipe as an inspection opening, it is more difficult for the diver to put the air bag into the pipe from the small opening under extremely low visibility, which greatly increases the operation time of the diver underwater and also greatly increases the safety risk of the diver. SUMMARY

[0004] Therefore, the method of the present application utilizes the cooperation of various devices and construction personnel to place the air bag into the pipe from the ground without the need for a diver to dive, thereby providing more protection for safe production.

[0005] Firstly, as shown in FIG. 1, this is the opening of the pipe seen from the ground down from the inspection well opening, which is commonly known as a "horseback skylight well". The skylight opening is only about 40 cm long, but a general water plugging air bag is 1 m long, and the pipeline is completely submerged in 2-3 m deep sewage, so the opening cannot be seen at all. Therefore, the conventional method cannot put the air bag into the pipe, and only a diver can enter the well to feel the opening and then try to put the air bag into the pipe.

[0006] The present application realizes the placement of the air bag into the pipe from the ground without the need for a diver to dive by the following operations:

[0007] Step one: Put a stick longer than the distance from the ground to the bottom of the well into the well from the well opening, slowly move it left and right and forward and backward after reaching the bottom, feel the opening, and then put the pipe into the pipe along the edge of the opening to know the size and position information of the opening, and then put the long stick against the opening in the direction of the air bag as a guide stick (as shown in FIG. 2).

[0008] Step two: Put the U-shaped slide (as shown in FIG. 3) against the guide stick into the skylight opening of the sewage pipe, and then put the slide against the skylight opening in the direction of the air bag as a guide slide (as shown in FIG. 4).

[0009] Step 3: Construct an airbag placement tool, which consists of a support, winch, clamp seat, and clamps (as shown in Figure 5). The support ensures stability during airbag placement. A steel wire rope is wound around the winch. Rotating the winch allows the steel wire rope to be wound and released, thus lowering the airbag into the well. The two winches must be able to operate independently to ensure that the two ends of the airbag have different strokes, thereby adjusting the airbag's posture in the well. The clamp seat connects the steel wire rope and the clamps. The length should not be too long to avoid getting stuck in the well, but the weight needs to be calculated to ensure that the airbag can return to a horizontal posture in the well. There are two or more clamps (to ensure that they can firmly clamp the airbag and prevent it from loosening), which are fixed to both ends of the clamp seat. The clamps are controlled by a brake line, so that the clamps can be tightened and loosened on the ground by tightening and loosening the brake line.

[0010] Step 4: Clamp the airbag onto the airbag placement tool. The tail end of the airbag (the end without the inflation tube) should protrude several tens of centimeters beyond the clamp seat to facilitate the airbag's entry into the sunroof opening. Then, rotate the winch to bring the airbag into a tail-down, head-up position (e.g., ...). Figure 6 Next, the airbag is placed into the U-shaped slide, and the two winches are rotated to make the tail of the airbag descend while it stays close to the U-shaped slide. Since the airbag does not deviate from the U-shaped slide, it enters the sunroof opening under the guidance of the U-shaped slide and descends to the bottom of the pipe.

[0011] Step 5: Remove the U-shaped slide, then rotate the winch connected to the head of the airbag to lower the airbag head. At this time, the airbag and clamp seat will change to a horizontal position due to gravity, so that the tail of the airbag will be raised and enter the tube through the skylight opening. Adjust the airbag's position by rotating the two winches so that the airbag can enter the tube as much as possible under the action of gravity (as shown in Figure 7).

[0012] Step Six: Use a long stick to hold the airbag in place to prevent it from drifting away. Then, release the clamps from the ground and rotate the winch to lift the airbag placement tool to the surface and remove it. Next, lower a long stick with a spoon-shaped or L-shaped structure at one end into the well along the stick holding the airbag and locate the airbag. Then, hold the head of the airbag and push it forcefully into the pipe. If it is difficult to exert force, you can use the wellhead as a fulcrum to pry the airbag (as shown in Figure 8). Through the coordinated pressing, lifting, pushing, and jacking of several long sticks, the airbag is successfully placed until it is completely inside the pipe.

[0013] If the pipe opening is not in the form of a skylight, but rather attached to the side wall of the manhole and flush with the manhole wall, the same steps can be used. Insert a long stick into the manhole to locate the pipe opening, then lower the airbag placement tool (containing the airbag) to the same height as the pipe opening. Rotate the winch to adjust the airbag to a horizontal position. As previously explained, at this point, part of the airbag's tail has already entered the pipe. Then, use the method described in step six above to push the airbag completely into the pipe. If the airbag cannot be successfully placed into the pipe due to the pipe opening being too deep or other reasons, replace the clamp in the airbag placement tool with a remote-controlled telescopic device that can be moved horizontally forward and backward from the ground. When the airbag descends to the pipe opening and is adjusted to a horizontal or as horizontal as possible, remotely extend the telescopic device with the airbag from the ground. After the airbag is completely inserted into the pipe, release the clamp and remotely retract the telescopic device away from the pipe. In this way, the airbag is successfully placed. Attached Figure Description

[0014] Figure 1 It is the pipe opening that you can see from the ground looking down from the inspection well, also known as the "arcade skylight well".

[0015] Figure 2 The process involves lowering a stick longer than the distance from the ground to the bottom of the well into the well from the wellhead. Once at the bottom, the stick is slowly moved left, right, back, and forth to find the opening. The tube is then inserted into the tube and moved along the edge of the opening to determine its size and location. The long stick is then placed against the opening in the direction of the airbag as a guide stick.

[0016] Figure 3 It is a U-shaped slide.

[0017] Figure 4 The U-shaped slide is placed against the guide rod and inserted into the skylight opening of the sewage pipe. Once it reaches the bottom, the slide is positioned so that the side of the skylight opening facing the direction of the airbag is used as the guide slide.

[0018] Figure 5 It is an airbag placement tool, which consists of a bracket, winch, clamp base and clamp.

[0019] Figure 6 The airbag is clamped onto the airbag placement tool and placed into the U-shaped slide. It descends while remaining close to the U-shaped slide, and guided by the U-shaped slide, it enters the sunroof opening and descends to the bottom of the pipe.

[0020] Figure 7 The process involves removing the U-shaped slide, then rotating the winch to make the airbag horizontal, causing the tail of the airbag to lift up and pass through the skylight opening into the tube. By rotating the two winches, the airbag's posture is adjusted so that as much of the airbag as possible enters the tube under the influence of gravity.

[0021] Figure 8The airbag is fully inserted into the tube by the combined pressing, lifting, pushing, and pushing of several long sticks or long sticks with spoon-shaped or L-shaped structures at the ends.

Claims

1. A method for placing a water-blocking airbag, characterized in that: The specific steps include the following: Step 1: Place a stick longer than the distance from the ground to the bottom of the well into the well. After finding the pipe opening, extend the pipe into the pipe and move it along the edge of the opening to find out the size and location of the opening. Then, place the long stick against the side of the opening facing the direction of the airbag as a guide stick. Step 2: Place the U-shaped slide against the guide rod and insert it into the skylight opening of the sewage pipe. Once it reaches the bottom, place the slide against the skylight opening in the direction of the airbag release as the guide slide. Step 3: Construct an airbag placement tool, consisting of a support frame, winch, clamp base, and clamps. The support frame ensures stability during airbag placement. A steel wire rope is wound around the winch; rotating the winch retracts the wire rope, lowering the airbag into the well. The two winches must be able to operate independently to ensure different strokes at both ends of the airbag, thus adjusting its posture within the well. The clamp base connects the steel wire rope and the clamps; its length should not be too long to avoid getting stuck in the well, but the weight needs to be calculated to ensure the airbag can return to a horizontal position underground. There are two or more clamps, fixed to both ends of the clamp base. The clamps are controlled by brake lines, allowing for clamping and releasing from the ground by tightening and loosening the brake lines. Step 4: Clamp the airbag onto the airbag placement tool. The tail of the airbag (the end without the air tube) should protrude several tens of centimeters beyond the clamp seat to facilitate the airbag entering the sunroof opening. Then, rotate the winch to make the airbag reach a tail-down, head-up position. Next, place the airbag into the U-shaped slide. Rotate the two winches to make the tail of the airbag descend while still touching the U-shaped slide and enter the sunroof opening under the guidance of the U-shaped slide until it reaches the bottom of the pipe. Step 5: Remove the U-shaped slide, then rotate the winch connected to the head of the airbag to lower the head of the airbag, thereby causing the tail of the airbag to rise and pass through the skylight opening into the tube. Adjust the posture of the airbag by rotating the two winches so that the airbag can enter the tube as much as possible under the action of gravity. Step Six: Use a long stick to hold the airbag in place to prevent it from drifting away. Then, release the clamps from the ground and rotate the winch to lift the airbag placement tool to the surface and remove it. Next, lower a long stick with a spoon-shaped or L-shaped structure at one end into the well along the stick holding the airbag and locate the airbag. Then, hold the head of the airbag and push it forcefully into the pipe. If it is difficult to exert force, you can use the wellhead as a fulcrum to pry the airbag. Through the coordinated pressing, lifting, pushing, and jacking of several long sticks, continue until the airbag is completely inside the pipe. It should be emphasized that the above steps are not fixed. Any additions, subtractions, changes or order adjustments to the above steps based on the actual conditions of the construction site are within the scope of protection of this invention.

2. The method for placing a water-blocking airbag according to claim 1, characterized in that: If the pipe opening is not in the form of a skylight, but rather attached to the side wall of the manhole and flush with the manhole wall, the same steps can be used. Insert a long stick into the manhole to locate the pipe opening, then lower the airbag placement tool (containing the airbag) to the same height as the pipe opening. Rotate the winch to adjust the airbag to a horizontal position. As previously explained, at this point, part of the airbag's tail has already entered the pipe. Then, use the method described in step six above to push the airbag completely into the pipe. If the airbag cannot be successfully placed into the pipe due to the pipe opening being too deep or other reasons, replace the clamp in the airbag placement tool with a remote-controlled telescopic device that can be moved horizontally forward and backward from the ground. When the airbag descends to the pipe opening and is adjusted to a horizontal or as horizontal as possible, remotely extend the telescopic device with the airbag from the ground. After the airbag is completely inserted into the pipe, release the clamp and remotely retract the telescopic device away from the pipe. In this way, the airbag is successfully placed.

3. A method for placing a water-blocking airbag according to claim 1 or 2, characterized in that: If the long stick is too long to be convenient to transport, several shorter sticks can be connected end to end to form a suitable length.

4. The method for placing a water-blocking airbag according to claim 1, characterized in that: To facilitate transportation and on-site construction, the U-shaped slide is made of canvas sewn together into a narrow and long shape with sufficient length to allow long poles to be inserted on both sides. Thus, when the long poles are erected, the canvas between the two long poles becomes a U-shaped slide.

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