A prestressed duct sealing detection device

Abstract

The utility model discloses a kind of prestressed hole sealing detection device, mainly including hollow tube, two inflatable tubes, air pump and circulation assembly, by the multiple walking wheels of hollow tube outside, so that hollow tube can be displaced in the pipeline to be detected, then by two inflatable rings inflation, so that two inflatable rings, the hollow tube outer wall between two inflatable rings and the inner wall between the pipeline to be detected form the space of filling liquid, and then by whether liquid overflow the inner wall of pipeline to be detected, so as to judge the connection sealing between two pipelines, then by liquid outlet valve, liquid is recycled, so that the recovery efficiency of liquid is faster and sufficient, and the dosage is less, at the same time, the pipeline to be detected is not filled with liquid, so that if the connection is not sealed, liquid can be recycled, timely remediation.

Description

Technical Field

[0001] This utility model relates to the technical field of box girder pipeline inspection, and in particular to a prestressed duct sealing inspection device. Background Technology

[0002] During the casting of the box girder, prestressed ducts are laid on the upper side of the support platform under the box girder so that steel strands and other prestressing tendons can be installed through the reserved ducts after the box girder is cast.

[0003] In existing technologies, due to the long length of box girders, prestressed ducts are typically formed by connecting multiple shorter ducts. These ducts are connected via threaded connections, flanges, or other connecting devices to ensure stable connections. However, some issues still need improvement when connecting the ducts:

[0004] 1. Due to the complexity of the construction site, there may be damage to the connecting devices or both ends of the pipes, resulting in poor sealing after the pipes are connected. If the pipes are not sealed well during pouring, concrete may seep into the pipes, causing blockage and affecting the subsequent installation of steel strands.

[0005] 2. In the existing technology, when testing connected pipes, both ends of the pipe are usually sealed and then water is injected to check for leaks at the pipe connection. However, when testing the sealing of pipe connections under the box girder, the pipes are long and usually have a large diameter. Using the method of sealing both ends and injecting water results in poor testing effectiveness. If the pipe is not sealed properly at the beginning of the water injection, the water injection must be stopped for repair. Otherwise, the leakage will continue, which is costly. If the repair is stopped, the liquid recovery will be slow and insufficient, resulting in low efficiency.

[0006] Therefore, there is an urgent need for a detection device that can detect the sealing of pipe connections without affecting remedial measures for the sealing of pipe connections, and that can recover water more fully and efficiently. Utility Model Content

[0007] The purpose of this invention is to provide a prestressed duct sealing performance testing device to solve the above-mentioned technical problems.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A prestressed duct sealing test device includes a hollow tube with multiple wheels on the circumferential outer walls at both ends, and the wheels at the same end are arranged sequentially at intervals along the circumference of the hollow tube. The hollow tube is provided with an inlet valve and an outlet valve that penetrate the tube body at both ends.

[0010] Two air rings are respectively set at both ends of the hollow tube, and their axial direction is consistent with the hollow tube. The two air rings are close to the walking wheels at both ends. The inlet valve and outlet valve are both set between the two air rings.

[0011] An air pump is installed inside the hollow tube, and both inflatable rings are connected to the air pump. The air pump inflates and deflates the inflatable rings; and

[0012] The circulation component is connected to the inlet valve and the outlet valve, and supplies liquid to the inlet valve and discharges liquid from the outlet valve box circulation component.

[0013] In some embodiments, the inlet valve is located near the air ring at the front end of the hollow tube in the direction of travel, and the outlet valve is located near the air ring at the rear end of the hollow tube in the direction of travel, and the axial directions of the inlet valve and the outlet valve are both perpendicular to the axial direction of the hollow tube.

[0014] In some embodiments, both ends of the outer wall of the hollow tube are provided with circumferential protrusions, the circumferential protrusions are provided with circumferential grooves and are adapted to the air rings, and the two air rings are respectively disposed in the circumferential grooves.

[0015] In some embodiments, the hollow tube between the two annular protrusions adopts a frustum structure, and the hollow tube outside the two annular protrusions adopts a cylindrical structure. The end of the hollow tube with the frustum structure with a smaller outer diameter faces the direction of travel of the hollow tube. The inlet valve is located at the smaller end of the hollow tube with the frustum structure, and the outlet valve is located at the larger end of the hollow tube with the frustum structure.

[0016] In some embodiments, the inner and outer diameters of the smaller end of the hollow tube with the frustum structure are the same as those of the hollow tube with the cylindrical structure, and are oriented towards the front end of the hollow tube in the direction of travel. The outer diameter of the end face of the larger end of the hollow tube with the frustum structure is the same as that of the circumferential protrusion, and coincides with the end face of the circumferential protrusion located at the rear end of the hollow tube in the direction of travel.

[0017] In some embodiments, the circulation assembly includes a waterwheel and two reels, which are arranged overlappingly and both are wound around a pipe. One end of the pipe of the upper reel is connected to the outlet valve and the other end is connected to the waterwheel. One end of the pipe of the lower reel is connected to the inlet valve and the other end is connected to the waterwheel.

[0018] In some embodiments, the water truck is provided with a partition, an outlet pump is provided on the upper side of the partition and is connected to the outlet valve, an inlet valve is provided on the lower side of the partition and is connected to the inlet valve, and the partition is provided with a connecting valve.

[0019] In some embodiments, the water truck is equipped with a water supply valve at its tail end, which communicates with the space under the partition.

[0020] In some embodiments, the outer wall of the hollow tube at one end in the direction of travel is provided with a transparent sealing cover, and a camera is provided inside the sealing cover.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] In this invention, multiple wheels on the outside of the hollow tube allow it to move within the pipe to be tested. Two inflatable rings then inflate the tube, creating a liquid-filled space between the two rings, the outer wall of the hollow tube between them, and the inner wall of the pipe to be tested. Whether the liquid overflows from the outer wall of the pipe to be tested indicates the sealing performance of the connection between the two pipes. A liquid outlet valve then recovers the liquid, resulting in fast and thorough recovery with minimal usage. Furthermore, since the pipe to be tested is not completely filled with liquid, any leaks in the connection can be recovered for timely remediation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a prestressed duct sealing performance testing device according to an embodiment of this application;

[0025] Figure 2 This is a top view of a prestressed duct sealing test device according to an embodiment of this application, when the hollow tube is not equipped with wheels, a base, and an air ring at one end.

[0026] Figure 3 This is a left-side schematic diagram of a prestressed duct sealing performance testing device according to an embodiment of this application;

[0027] Figure 4 This is a right-side schematic diagram of a prestressed duct sealing performance testing device according to an embodiment of this application;

[0028] Figure 5 This is a side cross-sectional view showing the positional relationship between the hollow tube, the air ring, and the pipe to be tested in a prestressed duct sealing test device according to an embodiment of this application.

[0029] Figure 6 This is a side cross-sectional view of the hollow tube of a prestressed duct sealing test device according to an embodiment of this application, with only the traveling wheels installed;

[0030] Figure label:

[0031] 1-Hollow tube, 11-Circumferential boss, 111-Circumferential groove, 12-Base,

[0032] 2-Walking wheels,

[0033] 3-Inlet valve,

[0034] 4-Discharge valve,

[0035] 5-Inflatable ring, 51-Inflatable valve,

[0036] 6-Air pump,

[0037] 7-Circulation assembly, 71-Water cart, 711-Baffle plate, 712-Outlet pump, 713-Inlet pump, 714-Connecting valve, 715-Water supply valve, 72-Roller,

[0038] 8-Sealing cover,

[0039] 9-Camera,

[0040] 10 - Pipe to be inspected. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0045] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0048] It should be understood that due to the complexity of the construction site, there may be damage to the connecting devices or both ends of the pipes, resulting in poor sealing after the pipes are connected. If the pipes are not sealed well during pouring, concrete may seep into the pipes, causing blockage and affecting the subsequent installation of the steel strands.

[0049] Meanwhile, when inspecting connected pipes, the pipes are usually sealed at both ends and then filled with water to check for leaks at the pipe connections. However, when testing the sealing of pipe connections under the box girder, the pipes are long and usually have a large diameter, so the method of sealing both ends and filling with water is less effective. If the pipes are not sealed properly at the beginning of the water injection, the water injection must be stopped for repair. Otherwise, the leaks will continue, which is costly. If the repair is stopped, the liquid recovery will be slow and insufficient, resulting in low efficiency.

[0050] To improve the above problems, this embodiment provides a prestressed duct sealing test device, which mainly includes a hollow tube 1, two air rings 5, an air pump 6 and a circulation component 7.

[0051] In this embodiment, as Figure 1 , Figure 3 and Figure 6As shown, multiple traveling wheels 2 are provided on the circumferential outer walls of both ends of the hollow tube 1, and the traveling wheels 2 at the same end are arranged sequentially at intervals along the circumference of the hollow tube 1. The multiple traveling wheels 2 at both ends are arranged opposite to each other. The traveling wheels 2 abut against the inner wall of the pipe 10 to be tested, and the outer wall of the hollow tube 1 is close to the inner wall of the pipe 10 to be tested. The axial direction of the hollow tube 1 is consistent with the axial direction of the pipe 10 to be tested. The arrangement of multiple traveling wheels 2 allows the hollow tube 1 to move back and forth stably along the axial direction of the pipe 10 to be tested.

[0052] The hollow tube 1 has multiple bases 12 on the outer walls at both ends. The bases 12 have a U-shaped structure. Multiple wheels 2 are respectively set in the grooves of the bases 12 and are rotatably connected to the inner walls on both sides of the bases 12 through a rotating shaft. A motor is provided in one side wall of the base 12, which can rotate forward and backward to drive the wheels 2, thereby causing the wheels 2 to rotate forward or backward, and thus driving the hollow tube 1 to move back along the axis of the pipe 10 to be tested.

[0053] Among them, the walking wheel 2 can be controlled by a remote device to control the motor to rotate forward or backward. The remote device can be a control panel, a mobile terminal device such as a mobile phone, which are all existing technologies and will not be described in detail.

[0054] In this embodiment, as Figures 1-2 As shown, two inflatable rings 5 ​​are respectively disposed at both ends of the hollow tube 1, and their axial direction is consistent with the hollow tube 1. The two inflatable rings 5 ​​are respectively close to the traveling wheels 2 at both ends. The air pump 6 is disposed on the inner wall of the hollow tube 1. Specifically, both ends of the outer wall of the hollow tube 1 are provided with circumferential bosses 11, and the circumferential bosses 11 are provided with circumferential grooves 111, which are adapted to the inflatable rings 5. The two inflatable rings 5 ​​are respectively disposed in the circumferential grooves 111. Among them, the inner sidewalls of the two inflatable rings 5 ​​are provided with inflation valves 51, which pass through the circumferential bosses 11 and are disposed on the inner wall of the hollow tube 1. Inside the hollow tube 1, the inflation valve 51 is connected to the inflation ring 5. Both inflation rings 5 ​​are connected to the air pump 6. The air pump 6 inflates and deflates the inflation rings 5, so that the outer wall of the inflation ring 5 is either against or away from the inner wall of the pipe 10 to be tested. When the inflation ring 5 is against the inner wall of the pipe 10 to be tested, the space inside the two inflation rings 5 ​​forms a sealed space with the outer wall of the hollow tube 1, which makes the position of the hollow tube 1 stable. When the inflation ring 5 is away from the inner wall of the pipe 10 to be tested, the displacement of the hollow tube 1 will not be hindered by the inflation ring 5.

[0055] Among them, the inflatable ring 5 can be an inflatable rubber ring.

[0056] In this embodiment, as Figures 1-2As shown, the hollow tube 1 is provided with an inlet valve 3 and an outlet valve 4 that penetrate the tube body at both ends. The axial directions of the inlet valve 3 and the outlet valve 4 are perpendicular to the axial direction of the hollow tube 1. The inlet valve 3 and the outlet valve 4 are both located between two air rings 5. The circulation component 7 is connected to the inlet valve 3 and the outlet valve 4 and supplies liquid to the inlet valve 3. The outlet valve 4 discharges liquid from the circulation component 7.

[0057] In this embodiment, when testing the pipe sealing performance, the hollow tube 1 is moved to the connection point of the two pipes, so that the connection point is located between the two inflatable rings 5. Then, liquid is injected into the sealed space formed by the two inflatable rings 5 ​​and the outer wall of the hollow tube 1 through the liquid inlet valve 3. At the same time, the liquid outlet valve 4 is opened to discharge gas and liquid. After the sealed space is filled with liquid, the liquid inlet valve 3 and the liquid outlet valve 4 are closed. At the same time, it is observed whether liquid flows out from the connection point of the two pipes to determine whether the seal at the connection point is good. After the test is completed, the liquid outlet valve 4 is opened to recover the liquid, so that the liquid can be easily and fully recovered and reused.

[0058] In this embodiment, the inlet valve 3 is close to the air ring 5 located at the front end of the hollow tube 1 in the direction of travel, and the outlet valve 4 is close to the air ring 5 located at the rear end of the hollow tube 1 in the direction of travel. This avoids the inlet valve 3 and outlet valve 4 being too close, thereby prolonging the liquid filling time in the sealed space and reducing the detection efficiency.

[0059] In some embodiments, such as Figures 1-2 As shown, the hollow tube 1 between the two circumferential protrusions 11 adopts a frustum structure, and the hollow tube 1 outside the two circumferential protrusions adopts a cylindrical structure. The end of the hollow tube 1 with the smaller outer diameter of the frustum structure faces the direction of travel of the hollow tube 1. The inlet valve 3 is located at the smaller end of the hollow tube 1 with the frustum structure, and the outlet valve 4 is located at the larger end of the hollow tube 1 with the frustum structure. The inner and outer diameters of the smaller end of the hollow tube with the frustum structure are consistent with the inner and outer diameters of the hollow tube 1 with the cylindrical structure, and both face the front end of the hollow tube 1 in the direction of travel. The outer diameter of the larger end face of the hollow tube 1 with a frustum structure is consistent with the outer diameter of the circumferential boss 11, and coincides with the end face of the circumferential boss 11 located at the rear end of the hollow tube 1 in the direction of travel. This causes the outer wall of the hollow tube 1 located between the two inflation tubes to be inclined, thereby reducing the volume of the sealed space, thus reducing the amount of liquid filling and the filling time. At the same time, since the liquid outlet valve 4 is located at the larger end and the liquid inlet valve 3 is located at the smaller end, the liquid accumulates along the inclined slope when liquid is injected, so there is no need to worry about it being directly discharged by the liquid outlet valve 4, further reducing the filling time required.

[0060] The displacement distance of the hollow tube 1 can be determined based on the entry length of the pipe connected to the inlet valve 3 or the time of uniform travel of the traveling wheel.

[0061] The inlet speed of the inlet valve 3 is greater than the outlet speed of the outlet valve 4, and both the inlet and outlet speeds can be set according to the size of the sealed space and other on-site conditions.

[0062] In this embodiment, the circulation component 7 includes a waterwheel 71 and two reels 72. The two reels 72 are arranged overlappingly and both are wound around pipes. One end of the pipe of the upper reel 72 is connected to the outlet valve 4 and the other end is connected to the waterwheel 71. One end of the pipe of the lower reel 72 is connected to the inlet valve 3 and the other end is connected to the waterwheel 71. The reel 72 is prior art and will not be described in detail.

[0063] In this embodiment, the water truck 71 is equipped with a partition 711. The upper side of the partition 711 is equipped with a liquid outlet pump 712, which is connected to the liquid outlet valve 4. The lower side of the partition 711 is equipped with a liquid inlet pump 713, which is connected to the liquid inlet valve 3. The partition 711 is equipped with a connecting valve 714. The tail end of the water truck 71 is equipped with a water replenishment valve 715, which is connected to the space below the partition 711. One side wall of the water truck 71 is made of transparent structure, so that the liquid outlet of the liquid outlet valve 4 inside the water truck 71 can be observed. When filling with water, the liquid inlet valve 3 and the liquid outlet valve 4 are opened. When the liquid outlet valve 4 is continuously and stably filled with water, the liquid is filled for a period of time. Then the liquid outlet valve 4 is closed, and then the liquid inlet valve 3 is closed to ensure that the liquid is full. The connecting valve 714 is opened so that the liquid on the upper side of the partition 711 can enter the lower side of the partition 711 for continued use. The water replenishment valve 715 is used for water replenishment operation and can also be connected to a backup water source to avoid insufficient water in the water truck 71.

[0064] In some embodiments, the outer wall of the hollow tube 1 at one end in the direction of travel is provided with a transparent sealing cover 8, and a camera 9 is provided inside the sealing cover 8. The camera 9 is used for real-time shooting and is wirelessly connected to a mobile terminal, so that the operator can ensure the accurate displacement position of the hollow tube 1 based on the shooting of the camera 9.

[0065] The connection method and control of camera 9 with the mobile terminal are all existing technologies, so we will not go into details.

Claims

1. A device for detecting the sealing performance of prestressed ducts, characterized in that, include: Hollow tube (1) has multiple wheels (2) on the outer walls of both ends, and the wheels (2) at the same end are arranged in sequence at intervals along the circumference of the hollow tube (1). The hollow tube (1) has an inlet valve (3) and an outlet valve (4) that penetrate the tube body at both ends. Two air rings (5) are respectively set at both ends of the hollow tube (1) and their axial direction is consistent with the hollow tube (1). The two air rings (5) are respectively close to the walking wheels (2) at both ends. The liquid inlet valve (3) and the liquid outlet valve (4) are both set between the two air rings (5). An air pump (6) is installed on the inner wall of the hollow tube (1), and both inflatable rings (5) are connected to the air pump (6). The air pump (6) inflates and deflates the inflatable rings (5). The circulation component (7) is connected to the inlet valve (3) and the outlet valve (4), and supplies liquid to the inlet valve (3), while the outlet valve (4) discharges liquid from the circulation component (7).

2. The detection device according to claim 1, characterized in that: The inlet valve (3) is close to the air ring (5) located at the front end of the hollow tube (1) in the direction of travel, and the outlet valve (4) is close to the air ring (5) located at the rear end of the hollow tube (1) in the direction of travel, and the axial directions of the inlet valve (3) and the outlet valve (4) are both perpendicular to the axial direction of the hollow tube (1).

3. The detection device according to claim 2, characterized in that: Both ends of the outer wall of the hollow tube (1) are provided with circumferential bosses (11), and the circumferential bosses (11) are provided with circumferential grooves (111) and are adapted to the air rings (5). The two air rings (5) are respectively set in the circumferential grooves (111).

4. The detection device according to claim 3, characterized in that: The hollow tube (1) between the two circumferential protrusions (11) adopts a frustum structure, and the hollow tube (1) outside the two annular protrusions adopts a cylindrical structure. The end of the hollow tube (1) with the frustum structure with the smaller outer diameter faces the direction of travel of the hollow tube (1). The inlet valve (3) is located at the smaller end of the hollow tube (1) with the frustum structure, and the outlet valve (4) is located at the larger end of the hollow tube (1) with the frustum structure.

5. The detection device according to claim 4, characterized in that: The inner and outer diameters of the smaller end of the hollow tube (1) with a frustum structure are the same as those of the hollow tube (1) with a cylindrical structure, and are oriented towards the front end of the hollow tube (1) in the direction of travel. The outer diameter of the end face of the larger end of the hollow tube (1) with a frustum structure is the same as that of the circumferential boss (11), and coincides with the end face of the circumferential boss (11) located at the rear end of the hollow tube (1) in the direction of travel.

6. The detection device according to claim 5, characterized in that: The circulation component (7) includes a waterwheel (71) and two reels (72). The two reels (72) are arranged in an overlapping manner and both are wound around pipes. One end of the pipe of the upper reel (72) is connected to the liquid outlet valve (4) and the other end is connected to the waterwheel (71). One end of the pipe of the lower reel (72) is connected to the liquid inlet valve (3) and the other end is connected to the waterwheel (71).

7. The detection device according to claim 6, characterized in that: The water truck (71) is equipped with a partition (711), and the upper side of the partition (711) is equipped with an outlet pump (712) and connected to the outlet valve (4). The lower side of the partition (711) is equipped with an inlet pump (713) and connected to the inlet valve (3). The partition (711) is equipped with a connecting valve (714).

8. The detection device according to claim 7, characterized in that: The water truck (71) is equipped with a water supply valve (715) at its tail end, and is connected to the space under the partition (711).

9. The detection device according to claim 8, characterized in that: The hollow tube (1) has a transparent sealing cover (8) on the outer wall at one end in the direction of travel, and a camera (9) is provided inside the sealing cover (8).

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