New and old sewage main pipe non-stop connection vertical shaft based on inverted siphon principle

Abstract

The utility model discloses a new and old sewage main pipe non-cut-off connection vertical shaft based on an inverted siphon principle, which belongs to the technical field of sewage pipeline installation and comprises a connection vertical shaft and a newly-built main pipe. The connection vertical shaft is composed of an inner layer and an outer layer, a gap is formed between the inner layer and the outer layer, and an old sewage main pipe is arranged on the side wall of the connection vertical shaft; a pre-plugging facility is arranged on the side wall of the inner layer; and the newly-built main pipe is communicated with the inner layer. According to the connection vertical shaft of the double-layer structure, connection of the old sewage main pipe and the newly-built main pipe without cutting off water is achieved, the vertical space is fully utilized in the connection process, large-area occupied land in construction is reduced, sewage cannot enter the inner layer space in the connection process, technicians can complete connection operation of the old and new pipelines in a safe environment, and the construction efficiency is improved. And the construction safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage pipe installation, in particular to a vertical shaft for connecting new and old sewage main pipes without water cut-off based on the inverted siphon principle. Background Art

[0002] During the construction of new sewage pipe networks, the connection between old and new pipes is a difficult and key issue faced in the construction of a large number of sewage pipe networks. When the old and new large-scale sewage trunk pipes are connected, the difficulty of pipe connection is further increased. For large-scale sewage trunk pipes, it is difficult to stop water for connection due to the large pipe discharge volume. Therefore, the safe connection to the new trunk pipe while maintaining the operation of the old trunk pipe is a difficult and key issue that needs to be solved in the installation of sewage pipes.

[0003] The Chinese patent with publication number CN109403444A discloses a connection technology that embeds the shaft wall in the jacking shaft to form a waterless working space. This method has the problem that the jacking shaft plane is embedded in the old main pipe, and the shaft occupies a large space. At the same time, the technicians need a long time to hoist the jacking machine and cast the shaft wall near the old pipeline after unloading. There are problems such as pipeline water gushing threatening the personal safety of workers. The Chinese patent with publication number CN217811448U discloses a non-stop water connection technology with the protection frame suspending the existing pipeline as the core. It also has the problems of complex and technically difficult production of the protection beam, large floor space and threats to the safety of workers. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a vertical shaft for connecting new and old sewage main pipes without water cut-off based on the inverted siphon principle.

[0005] The technical solution of the utility model is: a vertical shaft for connecting new and old sewage main pipes without water cut-off based on the inverted siphon principle, comprising a connecting shaft and a newly built main pipe horizontally arranged on the side wall of the connecting shaft;

[0006] An old sewage main pipe is transversely arranged on the side wall of the connecting shaft, and the connecting shaft is composed of an inner layer and an outer layer sleeved on the inner layer, the outer layer has a bottom surface, and a gap for sewage to pass through is arranged between the inner layer and the outer layer;

[0007] The old sewage main pipe runs through the inner layer and the outer layer and is divided into five sections, and according to the water flow direction, the five sections of the old sewage main pipe are: an upstream old pipe, an upstream port, an intermediate pipe, a downstream port, and a downstream old pipe;

[0008] The inner layer side wall is provided with pre-blocking facilities for closing both ends of the intermediate pipeline; one end of the newly built trunk pipe passes through the outer layer and is connected with the inner layer.

[0009] Description: The utility model realizes the connection between the old sewage main pipe and the newly built main pipe without water interruption through the double-layer structure of the connecting shaft. The connection process fully utilizes the vertical space, reduces the large area of ​​land occupied during construction, and during the connection process, sewage will not enter the inner space. Technical personnel can complete the connection operation of the old and new pipelines in a safe environment, thereby improving construction safety.

[0010] Furthermore, two first water retaining walls are vertically arranged between the outer layer and the inner layer, and the two first water retaining walls are respectively located on both sides of the newly built trunk pipe.

[0011] Note: The first water retaining wall can block sewage, so that the newly built main pipe is in a waterless space, avoiding sewage leakage into the newly built main pipe during construction.

[0012] Furthermore, the connecting shaft is constructed by reverse construction, and a water-stopping rubber or a water-stopping ring is arranged between the inner side wall and the old sewage main pipe during the reverse construction.

[0013] Note: Waterstop rubber or waterstop ring can improve the sealing between the hole and the old sewage main pipe to prevent sewage from leaking into the inner space.

[0014] Furthermore, the pre-sealing facility is sealed by concrete or brickwork.

[0015] Note: After the pre-sealing facilities are sealed, sewage can be prevented from flowing into the inner space, ensuring the safety of the new main pipe connection.

[0016] Furthermore, the inner layer has a bottom surface, and a diversion channel for sewage to pass through is provided between the bottom surface of the inner layer and the bottom surface of the outer layer, and a second water retaining wall for closing the two first water retaining walls is provided between the two first water retaining walls.

[0017] Note: The above structure increases the height of the inner layer, which can ensure that sewage flows through the diversion channel between the bottom surface of the inner layer and the bottom surface of the outer layer, avoiding the inner layer water level being too high when leakage occurs, and improving construction safety.

[0018] Furthermore, a supporting device for auxiliary supporting the inner layer and the outer layer is provided in the gap; the supporting device comprises an inner arc plate for fitting with the inner layer, an outer arc plate for fitting with the outer layer, and two sets of telescopic mechanisms arranged in parallel and used to connect the inner arc plate and the outer arc plate;

[0019] Each group of the telescopic mechanisms includes two first connecting rods whose one ends are hinged to the inner arc plate and are cross-arranged, two second connecting rods hinged to the outer arc plate and are cross-arranged, and two connecting rods arranged parallel to each other between the inner arc plate and the outer arc plate; the other ends of the two first connecting rods are rotatably connected to the other ends of the second connecting rods on the same side through the rotating shafts provided thereon, the two rotating shafts pass through the first connecting rod and the second connecting rod, one end of the two connecting rods is respectively hinged to the two rotating shafts one by one, and the other ends of the two connecting rods are respectively hinged to the first connecting rod on the same side and the second connecting rod on the same side;

[0020] A rotating rod is arranged in parallel between the two sets of telescopic mechanisms, and a movable block is respectively sleeved on both ends of the rotating rod. The rotating shafts of the two sets of telescopic mechanisms are fixedly connected to the movable blocks on the corresponding side, one movable block is threadedly connected to the rotating rod, and the other movable block is rotatably connected to the rotating rod.

[0021] Description: The above-mentioned support mechanism can be extended and retracted by rotating the rotating rod to adjust the distance between the inner arc plate and the outer arc plate, so that the support device can fit with the connecting well, making the inner layer and the outer layer more stable and improving construction safety.

[0022] The beneficial effects of the utility model are:

[0023] The utility model realizes the connection between the old sewage main pipe and the newly built main pipe without water interruption through the double-layer structure of the connecting shaft. The connection process fully utilizes the vertical space, reduces the large area of ​​land occupied during construction, and during the connection process, sewage will not enter the inner space. Technical personnel can complete the connection operation of the old and new pipelines in a safe environment, thereby improving construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0025] Figure 2 This is a schematic diagram of the overall structure of Embodiment 2 of the present utility model;

[0026] Figure 3 This is a schematic diagram of the second water retaining wall of Embodiment 2 of the present utility model;

[0027] Figure 4 It is a top view of Embodiment 3 of the present utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the support device of Embodiment 3 of the utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the rotating rod of Embodiment 3 of the utility model;

[0030] Among them, 11-inner layer, 12-outer layer, 21-downstream port, 22-upstream port, 23-intermediate pipeline, 24-downstream old pipeline, 25-upstream old pipeline, 3-pre-plugging facilities, 41-connecting hole, 42-new main pipe, 43-first water retaining wall, 44-second water retaining wall, 5-support device, 51-inner arc plate, 52-outer arc plate, 53-first connecting rod, 54-second connecting rod, 55-rotating shaft, 56-connecting rod, 57-rotating rod, 58-movable block. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with specific implementation methods to better reflect the advantages of the present invention.

[0032] Embodiment 1:

[0033] like Figure 1 As shown, a new and old sewage main pipe is connected to a vertical shaft without water cut-off based on the inverted siphon principle, including a connecting shaft and a newly built main pipe 42 arranged horizontally on the side wall of the connecting shaft;

[0034] An old sewage main pipe is transversely arranged on the side wall of the connecting shaft, and the connecting shaft is composed of an inner layer 11 and an outer layer 12 sleeved on the inner layer 11, the outer layer 12 has a bottom surface, and a gap for sewage to pass through is arranged between the inner layer 11 and the outer layer 12;

[0035] The old sewage main pipe runs through the inner layer 11 and the outer layer 12 and is divided into five sections, and according to the water flow direction, the five sections of the old sewage main pipe are: an upstream old pipe 25, an upstream port 22, an intermediate pipe 23, a downstream port 21, and a downstream old pipe 24;

[0036] The side wall of the inner layer 11 is provided with a pre-blocking facility 3 for closing the left and right ends of the intermediate pipe 23; the upper end of the newly built main pipe 42 passes through the outer layer 12 and is connected to the inner layer 11, and the outer layer 12 and the inner layer 11 are both provided with a connection hole 41 for the newly built main pipe 42 to pass through;

[0037] Two first water retaining walls 43 are vertically arranged between the outer layer 12 and the inner layer 11. The two first water retaining walls 43 are respectively located on the left and right sides of the newly built trunk pipe 42. Figure 1 The direction of the arrow shown in the figure is the direction of water flow;

[0038] The connecting shaft is constructed by reverse construction, and a water-stop rubber is arranged between the side wall of the inner layer 11 and the old sewage main pipe during reverse construction; the pre-blocking facility 3 is sealed by concrete;

[0039] The above-mentioned construction method of the new and old sewage main pipes without water cut-off well based on the inverted siphon principle includes the following steps:

[0040] S1, constructing a connecting shaft by reverse construction, determining the access direction of the new main pipe 42, and then constructing two first water retaining walls 43;

[0041] S2, first cut the downstream port 21, after the cutting is completed, transport the downstream port 21 out by crane, then cut the upstream port 22, after the cutting is completed, transport the upstream port 22 out by crane, at this time, the sewage flows into the downstream old pipe 24 through the gap between the inner layer 11 and the outer layer 12, and then the two ends of the middle pipe 23 are blocked by the pre-blocking facility 3;

[0042] S3, cutting the intermediate pipe 23 and transporting it out by crane, then drilling a connection hole 41 on the connection shaft, installing a new main pipe 42 to connect it with the inner layer 11;

[0043] S4, remove the pre-blocking facility 3, and install new pipes so that the upstream old pipe 25 and the downstream old pipe 24 are connected to the inner layer 11. At this time, the old sewage main pipe and the newly built main pipe 42 are connected, and then the gap between the inner layer 11 and the outer layer 12 is backfilled.

[0044] Embodiment 2:

[0045] like Figure 2 , Figure 3 As shown, this embodiment is basically the same as the embodiment 1, except that the inner layer 11 has a bottom surface, and a diversion channel for sewage to pass through is provided between the bottom surface of the inner layer 11 and the bottom surface of the outer layer 12; a second water retaining wall 44 for closing the two first water retaining walls 43 is provided between the two first water retaining walls 43. Figure 2 The direction of the arrow shown is the direction of water flow.

[0046] The working principle of the inner layer 11 structure is as follows: after the upstream port 22 is cut, the sewage will flow into the diversion channel and out through the downstream old pipe 24 , and the second water retaining wall 44 will close the space between the two first water retaining walls 43 to prevent the sewage from entering the two first water retaining walls 43 .

[0047] Embodiment 3:

[0048] like Figure 4 As shown, this embodiment is basically the same as the embodiment 1, except that six supporting devices 5 for auxiliary supporting the inner layer 11 and the outer layer 12 are provided in the gap; Figure 5 As shown, the support device 5 includes an inner arc plate 51 for fitting with the inner layer 11, an outer arc plate 52 for fitting with the outer layer 12, and two sets of telescopic mechanisms arranged in parallel and used to connect the inner arc plate 51 and the outer arc plate 52;

[0049] Each group of the telescopic mechanisms includes two first connecting rods 53 whose left ends are hinged to the inner arc plate 51 and are arranged crosswise, two second connecting rods 54 whose right ends are hinged to the outer arc plate 52 and are arranged crosswise, and two connecting rods 56 arranged parallel to each other between the inner arc plate 51 and the outer arc plate 52; the right ends of the two first connecting rods 53 are rotatably connected to the left ends of the second connecting rods 54 on the same side through the rotating shafts 55 provided thereon, and the two rotating shafts 55 pass through the first connecting rods 53 and the second connecting rods 54, and the front connecting rods 56 The right end is hinged to the same side shaft 55, the left end of the front connecting rod 56 is hinged to the first connecting column provided on the first connecting rod 53 on the same side, it can be understood that the first connecting column is arranged at the center between the left end of the first connecting rod 53 and the intersection of the two first connecting rods 53, the left end of the rear connecting rod 56 is hinged to the same side shaft 55, the right end of the rear connecting rod 56 is hinged to the connecting column provided on the second connecting rod 54 on the same side, and the second connecting column is arranged at the center between the right end of the second connecting rod 54 and the intersection of the two second connecting rods 54;

[0050] like Figure 6 As shown, a rotating rod 57 is arranged in parallel between the two sets of telescopic mechanisms, and a movable block 58 is respectively sleeved on the front and rear ends of the rotating rod 57. The rotating shafts 55 of the two sets of telescopic mechanisms are fixedly connected to the movable block 58 on the corresponding side. The movable block 58 located on the front side is threadedly connected to the rotating rod 57, and the movable block 58 located on the rear side is rotatably connected to the rotating rod 57. The rotating rod 57 is rotatably connected to the movable block 58 on the rear side through an annular groove provided on its side wall, and a handle is provided at the front end of the rotating rod 57.

[0051] The working principle of the above-mentioned supporting device 5 is as follows: during construction, the inner arc plate 51 can be fitted with the inner layer 11, and then the rotating rod 57 is rotated to make the two movable blocks 58 approach each other, and the distance between the two movable blocks 58 becomes shorter, so that the first connecting rod 53 and the second connecting rod 54 are rotated to extend the telescopic mechanism until the outer arc plate 52 can fit with the outer arc plate 52.

Claims

1. A vertical shaft for connecting new and old sewage main pipes without water cut-off based on the inverted siphon principle, characterized in that: It includes a connecting shaft and a newly built main pipe (42) arranged transversely on the side wall of the connecting shaft; An old sewage main pipe is transversely arranged on the side wall of the connecting shaft, and the connecting shaft is composed of an inner layer (11) and an outer layer (12) sleeved on the inner layer (11), the outer layer (12) has a bottom surface, and a gap for sewage to pass through is provided between the inner layer (11) and the outer layer (12); The old sewage main pipe runs through the inner layer (11) and the outer layer (12) and is divided into five sections, and the five sections of the old sewage main pipe are, in order according to the water flow direction: an upstream old pipe (25), an upstream port (22), an intermediate pipe (23), a downstream port (21), and a downstream old pipe (24); The side wall of the inner layer (11) is provided with a pre-blocking facility (3) for sealing both ends of the intermediate pipeline (23); one end of the newly built main pipe (42) passes through the outer layer (12) and is connected to the inner layer (11).

2. According to claim 1, a vertical shaft for connecting new and old sewage main pipes without water cut-off based on the inverted siphon principle, characterized in that: Two first water retaining walls (43) are vertically arranged between the outer layer (12) and the inner layer (11), and the two first water retaining walls (43) are respectively located on both sides of the newly built main pipe (42).

3. According to claim 1, a vertical shaft for connecting new and old sewage main pipes without water cut-off based on the inverted siphon principle, characterized in that: The connecting shaft is constructed by reverse construction, and during the reverse construction, a water-stopping rubber or a water-stopping ring is arranged between the side wall of the inner layer (11) and the old sewage main pipe.

4. According to claim 1, a vertical shaft for connecting new and old sewage main pipes without water cut-off based on the inverted siphon principle, characterized in that: The pre-sealing facility (3) is sealed by concrete or brickwork.

5. According to claim 2, a vertical shaft for connecting new and old sewage main pipes without water cut-off based on the inverted siphon principle, characterized in that: The inner layer (11) has a bottom surface, and a diversion channel for sewage to pass through is provided between the bottom surface of the inner layer (11) and the bottom surface of the outer layer (12), and a second water retaining wall (44) for closing the two first water retaining walls (43) is provided between the two first water retaining walls (43).

6. The method for connecting the old and new sewage main pipes to the vertical shaft without water cut-off based on the inverted siphon principle according to claim 1 is characterized in that: A plurality of supporting devices (5) for auxiliary supporting the inner layer (11) and the outer layer (12) are arranged in the gap; the supporting devices (5) include an inner arc plate (51) for fitting with the inner layer (11), an outer arc plate (52) for fitting with the outer layer (12), and two sets of telescopic mechanisms arranged in parallel and for connecting the inner arc plate (51) and the outer arc plate (52); Each group of the telescopic mechanisms comprises two first connecting rods (53) whose one ends are hinged to the inner arc plate (51) and are arranged crosswise, two second connecting rods (54) whose one ends are hinged to the outer arc plate (52) and are arranged crosswise, and two connecting rods (56) arranged parallel to each other between the inner arc plate (51) and the outer arc plate (52); the other ends of the two first connecting rods (53) are rotatably connected to the other ends of the second connecting rods (54) on the same side through rotating shafts (55) provided thereon, the two rotating shafts (55) pass through the first connecting rod (53) and the second connecting rod (54), one ends of the two connecting rods (56) are respectively hinged to the two rotating shafts (55) in a one-to-one correspondence, and the other ends of the two connecting rods (56) are respectively hinged to the first connecting rod (53) on the same side and the second connecting rod (54) on the same side in a one-to-one correspondence; A rotating rod (57) is arranged in parallel between the two telescopic mechanisms. A movable block (58) is sleeved on both ends of the rotating rod (57). The rotating shafts (55) of the two telescopic mechanisms are fixedly connected to the movable blocks (58) on the corresponding side. One movable block (58) is threadedly connected to the rotating rod (57), and the other movable block (58) is rotatably connected to the rotating rod (57).

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