Pipeline plugging air bag adapting to different pipe diameters

Abstract

The present application belongs to the technical field of municipal pipeline engineering machinery, and discloses a pipeline plugging air bag suitable for pipelines with different diameters, which comprises a cage, an air bag sleeved on the outer periphery of the cage, and a gas conveying device connected to the air bag and used for controlling the gas amount of the air bag. The cage comprises a plurality of annular supports and a plurality of axial supports. Each annular support is in the form of a variable-diameter structure. Each annular support is arranged perpendicularly to a first axis and arranged in sequence along the direction of the first axis. Each annular support is connected through an axial support arranged along the first axis. The beneficial effects are as follows: each annular support is in the form of a variable-diameter structure, thereby being suitable for pipelines with different diameters; each annular support is arranged perpendicularly to the first axis and arranged in sequence along the direction of the first axis; and each annular support is connected through an axial support arranged along the first axis, so that the diameter change of the annular support does not affect the fixing function of the axial support, the stability of the cage can be maintained, and the pipeline can be plugged through the inflation of the air bag by the gas conveying device.

Description

Technical Field

[0001] This invention relates to the field of municipal pipeline engineering machinery technology, and in particular to a pipeline sealing airbag adaptable to different pipe diameters. Background Technology

[0002] During the installation of municipal pipelines, procedures such as connecting new and old pipelines and conducting pipeline airtightness tests require sealing the drainage pipes. Current technology typically uses sealing airbags, which are pressurized and inflated to seal the pipes. However, existing sealing airbags have fixed specifications, requiring different specifications for different pipe diameters, resulting in low utilization rates for single-specification airbags. Summary of the Invention

[0003] The purpose of this invention is to provide a pipe sealing airbag that can adapt to different pipe diameters, so as to solve the problem of not being able to meet the needs of different pipe diameters.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A pipe sealing airbag adaptable to different pipe diameters, comprising:

[0006] Cage;

[0007] Airbags, fitted around the outer perimeter of the cage; and

[0008] An air delivery device is connected to the airbag and controls the amount of gas in the airbag, wherein:

[0009] The cage includes multiple annular supports and multiple axial supports. Each annular support is an annular variable diameter structure. Each annular support is arranged perpendicular to the first axis and is arranged sequentially along the first axis. Each annular support is connected by the axial supports arranged along the first axis.

[0010] In some alternative embodiments, the annular support includes:

[0011] The sleeve is composed of multiple elastic arc-shaped tubes, the radii of which increase sequentially; and

[0012] The connector is elastic, with its first end fixedly connected to the first end of the sleeve, and its tail end inserted from the second end of the sleeve and optionally snapped into any of the arc-shaped tubes.

[0013] In some optional embodiments, each of the arc-shaped tubes has a locking hole on its wall, and the tail end surface of the connector has an elastically retractable protrusion that can be locked into any of the locking holes.

[0014] In some alternative embodiments, the cage further includes:

[0015] A support rod, one end of which is retractably connected to the connecting body, and the other end of which is retractably connected to the sleeve or connecting body; and

[0016] An adjustment device for adjusting the length of the support rod.

[0017] In some alternative embodiments, each of the annular supports is connected to at least two of the support rods.

[0018] In some alternative embodiments, the support rod includes:

[0019] A pair of rod holders, the tail ends of which are opposite each other; and

[0020] Each strut is rotatably connected to the head end of the strut seat. The end of the strut away from the strut seat is connected to the sleeve. The strut seat is configured to rotate so that it can drive the strut to move along its own length.

[0021] In some optional embodiments, the adjusting device includes an adjusting rod arranged along the first axis, the surface of the adjusting rod being provided with a steering transmission structure, and the adjusting rod being connected to the rod seat through the steering transmission structure;

[0022] The adjusting device further includes a power mechanism for driving the adjusting rod to rotate around the first axis.

[0023] In some alternative embodiments, each of the said rod seats is connected to one of the said adjusting rods.

[0024] In some alternative embodiments, the airbag comprises two parts, an inner and an outer one, which define an air outlet cavity between them;

[0025] The gas supply device is used to supply gas into and exhaust gas into the gas cavity.

[0026] In some alternative embodiments, the axial support comprises two sets, one set of which is connected to each of the rod seats, and the other set of which is connected to each of the struts.

[0027] The beneficial effects of this invention are:

[0028] The pipe-sealing airbag adaptable to different pipe diameters includes a cage body, which is composed of annular supports and axial supports. Each annular support has a variable diameter structure to adapt to pipes of different diameters. Each annular support is arranged perpendicular to the first axis and arranged sequentially along the first axis. Each annular support is connected by an axial support arranged along the first axis, so that the variable diameter of the annular support does not affect the fixing effect of the axial support, thus maintaining the stability of the cage body. The airbag is then inflated by an air supply device to achieve pipe sealing.

[0029] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0030] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0031] Figure 1 This is a schematic diagram of the structure of the pipe sealing airbag adapted to different pipe diameters provided in Embodiment 1;

[0032] Figure 2 This is a schematic diagram of the ring-shaped support structure;

[0033] Figure 3 yes Figure 2 The diagram shows the structure of the sleeve in the annular support.

[0034] Figure 4 This is a partial structural diagram showing the connection between the sleeve and the connector;

[0035] Figure 5 This is a structural diagram of the support rod and adjustment device;

[0036] Figure 6 This is a schematic diagram of the structure of the pipe sealing airbag adapted to different pipe diameters provided in Embodiment 2. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0041] Example 1

[0042] This embodiment provides a pipe sealing airbag adaptable to different pipe diameters, such as... Figure 1 As shown, the pipe sealing airbag adapted to different pipe diameters includes a cage, an airbag 3, and an air delivery device 4.

[0043] There is one airbag 3, which is fitted around the outer periphery of the cage. The air supply device 4 is connected to the airbag 3 and controls the amount of gas in the airbag 3.

[0044] The cage includes multiple annular supports 1 and multiple axial supports 2. Each annular support 1 has an annular variable diameter structure. Each annular support 1 is arranged perpendicular to the first axis L and is arranged sequentially along the first axis L. Each annular support 1 is connected by axial supports 2 arranged along the first axis L.

[0045] Each annular support 1 has an annular variable diameter structure to adapt to pipes of different diameters. Each annular support 1 is arranged perpendicular to the first axis L and arranged sequentially along the first axis L. Each annular support 1 is connected by an axial support 2 arranged along the first axis L, so that the variable diameter of the annular support 1 does not affect the fixing effect of the axial support 2, thus maintaining the stability of the cage. Then, the air bag 3 is inflated by the air supply device 4 to achieve the sealing of the pipe.

[0046] like Figure 2 As shown, the annular support 1 includes a sleeve 10 and a connector 11.

[0047] like Figure 3As shown, the sleeve 10 is composed of multiple elastic arc-shaped tubes 101, with the radii of the multiple arc-shaped tubes 101 increasing sequentially. In this embodiment, the sleeve 10 is composed of four arc-shaped tubes 101, the four arc-shaped tubes 101 ( Figure 3 The radii of (101A-101D) are 300mm, 400mm, 600mm, and 800mm respectively.

[0048] The elasticity of the arc-shaped tube 101 means that it can bend and deform. It can be understood that the sleeve 10 is a single-piece structure, and the difference between different arc-shaped tubes 101 lies in their radius in a stable state.

[0049] The connector 11 is elastic. The first end of the connector 11 is fixedly connected to the first end of the sleeve 10, and the tail end of the connector 11 is inserted from the second end of the sleeve 10 and can be selectively snapped into any arc-shaped tube 101.

[0050] In this embodiment, the radial cross-section of the lumen of the sleeve 10 is a relatively flat rectangular shape, and the connector 11 is a strip-shaped structure with a certain thickness and width. The connector 11 and the sleeve 10 are clearance-fitted.

[0051] like Figure 4 As shown, each arc-shaped tube 101 has a locking hole 1010 on its tube wall, and the tail end surface of the connector 11 has an elastically expandable protrusion 111, which can be locked into any locking hole 1010. It can be understood that the protrusion 111 can move elastically relative to the surface of the connector 11, protruding and locking into the locking hole 1010 when its elastic stroke is at its maximum position, and being compressed by the tube wall of the sleeve 10 when it is not in the locking position.

[0052] Optionally, the protrusion 111 is configured as a hemispherical structure with a certain compressive elasticity, and the card hole 1010 is configured as a circular hole.

[0053] Combination Figure 1 and Figure 5 The cage also includes a support rod 51 and an adjustment device 52.

[0054] One end of the support rod 51 is retractably connected to the connector 11, and the other end of the support rod 51 is retractably connected to the sleeve 10 or the connector 11; the adjusting device 52 is used to adjust the length of the support rod 51.

[0055] The adjusting device 52 adjusts the length of the support rod 51, thereby changing the total circumference of the sleeve 10 and the connecting body 11, that is, changing the diameter of the annular bracket 1.

[0056] It should be noted that each annular support 1 is connected to at least two support rods 51. The presence of at least two support rods 51 ensures that the annular support 1 maintains the same speed of change in all directions, preventing distortion of the annular support 1. Specifically, in this embodiment, each annular support 1 is provided with four support rods 51, roughly dividing the annular support 1 into eight equal parts along its circumference.

[0057] Each support rod 51 includes a pair of rod seats 511 and a strut 512.

[0058] The tail ends of a pair of rod seats 511 are positioned opposite each other. Support rods 512 are rotatably connected to the heads of the rod seats 511, with the end of the support rod 512 away from the rod seat 511 connected to a sleeve 10. The rod seats 511 are configured such that rotation can drive the support rods 512 to move along their own length.

[0059] It is understandable that when the two rod seats 511 rotate clockwise, the two support rods 512 move away from each other in their respective rod seats 511; when the two rod seats 511 rotate counterclockwise, the two support rods 512 move closer to each other in their respective rod seats 511.

[0060] The adjusting device 52 includes an adjusting rod 521 arranged along the first axis L. The surface of the adjusting rod 521 is provided with a steering transmission structure, and the adjusting rod 521 is connected to the rod seat 511 through the steering transmission structure.

[0061] In this embodiment, the steering transmission structure is a bevel gear, which meshes with the rod seat 511.

[0062] The adjusting device 52 also includes a power mechanism for driving the adjusting rod 521 to rotate around the first axis L. It can be understood that the power mechanism drives the adjusting rod 521 to rotate, and then the bevel gear on the adjusting rod 521 drives the rod seat 511 to rotate. After the rod seat 511 rotates, it drives the two support rods 512 to move towards or away from each other.

[0063] In this embodiment, the power mechanism is set as a motor, which drives the adjusting rod 521 to rotate.

[0064] Each support 511 is connected to an adjusting rod 521. It can be understood that since each support 511 is connected to the same adjusting rod 521, the rotation of the adjusting rod 521 causes each support 511 to rotate within the same angle range, thereby ensuring that the extension and retraction range of each support 512 is consistent, achieving uniform changes in the cage structure.

[0065] In this embodiment, the motor can be remotely controlled via wireless communication technology.

[0066] The working principle of the pipe sealing airbag adapted to different pipe diameters provided in this embodiment is as follows:

[0067] The cage is placed into the pipe. At this time, the diameter of the cage is smaller than the inner diameter of the pipe. The control motor drives the adjusting rod 521 to rotate. After the adjusting rod 521 rotates, it drives each rod seat 511 to rotate, and then each support rod 512 expands outward. When the cage is within a predetermined range (e.g., 1 cm) from the inner wall of the pipe, the air supply device 4 is turned on to supply air to the airbag 3. Finally, the airbag 3 expands and seals the pipe.

[0068] Example 2:

[0069] join Figure 6 The difference between this embodiment and Embodiment 1 is that the airbag 3 includes inner and outer layers, with an air cavity defined between them. The air supply device 4 is used to supply air into and exhaust air into the air cavity.

[0070] Setting up two layers of airbags, one inside and one outside, can reduce the amount of air supplied and improve the sealing efficiency.

[0071] In this embodiment, the inner airbag 3 cannot continue to expand, and the pipeline is mainly blocked by the expansion of the outer airbag 3.

[0072] Specifically, the axial support 2 includes two sets, one set of which is connected to each rod seat 511, and the other set of which is connected to each support rod 512. The inner airbag 3 covers each rod seat 511, and the outer airbag 3 is connected to each support rod 512.

[0073] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A pipe sealing airbag adaptable to different pipe diameters, characterized in that, include: Cage; An air bladder (3) is fitted around the outer periphery of the cage. The air bladder (3) includes two parts, an inner one and an outer one, which define an air cavity between them. as well as An air supply device (4) for supplying and venting air into and out of the air chamber is connected to the airbag (3) and controls the amount of gas in the airbag (3), wherein: The cage includes multiple annular supports (1), multiple axial supports (2), a support rod (51) with one end retractable and connected to the connecting body (11), and an adjusting device (52). Each annular support (1) has an annular variable diameter structure. Each annular support (1) is arranged perpendicular to the first axis and arranged sequentially along the first axis. Each annular support (1) is connected by the axial support (2) arranged along the first axis. The adjusting device (52) includes a power mechanism for driving rotation. The annular support (1) includes a sleeve (10) composed of multiple elastic arc-shaped tubes (101), the radii of which increase sequentially, and a connector (11) which is elastic. The first end of the connector (11) is fixedly connected to the first end of the sleeve (10), and the tail end of the connector (11) is inserted from the second end of the sleeve (10) and can selectively engage any of the arc-shaped tubes (101). The adjusting device (52) changes the diameter of the annular support (1) by adjusting the length of the support rod (51) and changing the total circumference of the sleeve (10) and the connector (11).

2. The pipe sealing airbag adapted to different pipe diameters according to claim 1, characterized in that, Each of the arc-shaped tubes (101) has a locking hole (1010) on its tube wall, and the tail end surface of the connector (11) has an elastically retractable protrusion (111), which can be locked into any of the locking holes (1010).

3. The pipe sealing airbag adapted to different pipe diameters according to claim 2, characterized in that, Each of the ring brackets (1) is connected to at least two of the support rods (51).

4. The pipe sealing airbag adapted to different pipe diameters according to claim 3, characterized in that, The support rod (51) includes: A pair of rod holders (511), the tail ends of which are opposite each other; and The strut (512) is rotatably connected to the head end of the rod seat (511) in a corresponding manner. The end of the strut (512) away from the rod seat (511) is connected to the sleeve (10). The rod seat (511) is configured to rotate so that it can drive the strut (512) to move along its own length direction.

5. The pipe sealing airbag adapted to different pipe diameters according to claim 4, characterized in that, The adjusting device (52) includes an adjusting rod (521) arranged along the first axis. The surface of the adjusting rod (521) is provided with a steering transmission structure. The adjusting rod (521) is connected to the rod seat (511) through the steering transmission structure. The adjusting device (52) further includes a power mechanism for driving the adjusting rod (521) to rotate around the first axis.

6. The pipe sealing airbag adapted to different pipe diameters according to claim 5, characterized in that, Each of the aforementioned rod seats (511) is connected to one of the aforementioned adjusting rods (521).

7. The pipe sealing airbag adapted to different pipe diameters according to claim 6, characterized in that, The axial support (2) includes two sets, one set of which is connected to each of the rod seats (511), and the other set of which is connected to each of the support rods (512).

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