Sealing device

Abstract

The utility model provides a sealing device. At least part of the sealing device is located in the pipeline. The extrusion assembly is arranged on the mounting structure, the extrusion assembly comprises at least two oppositely arranged extrusion pieces, and the at least two extrusion pieces surround to form an extrusion space; at least part of the sealing structure is made of an elastic material, and at least part of the sealing structure is located in the extrusion space; wherein at least one extrusion piece can move towards or away from at least another extrusion piece so as to adjust the size of the extrusion space, and in the process that the extrusion space extrudes the sealing structure to generate elastic deformation, when at least part of the peripheral face of the sealing structure abuts against the inner wall of the pipeline, the sealing structure seals the pipeline. The pipeline pressure testing device effectively solves the problem that in the prior art, the pipeline pressure testing efficiency is low.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline maintenance, in particular to a sealing device. Background Art

[0002] Currently, during the pressure test of a pipeline (i.e., using test equipment to introduce water into the pipeline to determine the pipeline's sealing performance and detect whether the maximum pressure the pipeline can withstand meets relevant standards), staff need to use temporary sealing methods (such as installing a pipeline sealing flange) to temporarily block and seal the non-test end of the pipeline to ensure that the pressure test can proceed normally.

[0003] However, existing temporary sealing methods suffer from inefficient assembly and disassembly (for example, when installing pipe sealing flanges, numerous fasteners are required, making assembly and disassembly time-consuming). Furthermore, pressure testing typically requires testing a large number of pipes sequentially, requiring repeated assembly and disassembly. Furthermore, due to the fixed structure of the pipe sealing flanges, even minor changes in pipe dimensions require the operator to find a new matching flange, significantly reducing overall testing efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a sealing device to solve the problem of low efficiency of pipeline pressure testing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a sealing device, at least part of which is located in the pipeline, and the sealing device includes: a mounting structure; an extrusion assembly, which is arranged on the mounting structure, and the extrusion assembly includes at least two oppositely arranged extrusion parts, and the at least two extrusion parts are surrounded to form an extrusion space; a sealing structure, at least part of the sealing structure is made of elastic material, and at least part of the sealing structure is located in the extrusion space; wherein, at least one extrusion part can move toward or away from at least another extrusion part to adjust the size of the extrusion space, and in the process of elastic deformation of the extrusion space extruding the sealing structure, when at least part of the outer peripheral surface of the sealing structure abuts against the inner wall of the pipeline, the sealing structure seals the pipeline.

[0006] Furthermore, the sealing device further comprises: a driving structure, which is drivingly connected to at least one extrusion member, and the driving structure adjusts the size of the extrusion space by driving the extrusion member to move toward or away from another extrusion member.

[0007] Furthermore, the driving structure is arranged on the mounting structure, the mounting structure has a mounting hole, and the sealing device also includes: a transmission assembly, at least part of the transmission assembly is located in the mounting hole, and the driving structure is connected to at least one extrusion member through the transmission assembly.

[0008] Furthermore, at least two extrusions include a first extrusion and a second extrusion, the first extrusion having a through hole, and the transmission assembly including: a transmission rod, a driving structure connected to the transmission rod to drive the transmission rod to rotate; a transmission sleeve, sleeved on the transmission rod and threadedly connected to the transmission rod, the first extrusion being arranged on an end of the transmission sleeve away from the driving structure, an end of the transmission rod away from the driving structure extending through the through hole, and the second extrusion being arranged on the end; wherein, in the process of the driving structure driving the transmission rod to rotate, the transmission sleeve extends out under the threaded cooperation with the transmission rod to drive the first extrusion to move toward the second extrusion.

[0009] Furthermore, the thread structure between the transmission rod and the transmission sleeve is a trapezoidal thread.

[0010] Furthermore, the first extrusion piece is in a plate shape, the second extrusion piece is in a plate shape, and the plate surfaces of the first extrusion piece and the second extrusion piece facing each other form an extrusion space.

[0011] Furthermore, the sealing structure is plate-shaped and has a through hole, and the sealing structure can be movably mounted on the transmission rod; wherein the projection of the first extrusion member on the sealing structure is located inside the sealing structure; and / or, the projection of the second extrusion member on the sealing structure is located inside the sealing structure.

[0012] Furthermore, the second extruding member is rotatably disposed on an end of the transmission rod away from the driving structure.

[0013] Furthermore, a first matching portion is provided on the hole wall of the mounting hole, and a second matching portion is provided on the outer peripheral surface of the transmission sleeve. One of the first matching portion and the second matching portion is a protrusion, and the other of the first matching portion and the second matching portion is a recess. The protrusion extends into the recess and is slidably arranged along the extension direction of the recess; wherein the extension direction of the recess is consistent with the extension direction of the transmission rod, so that when the transmission sleeve moves along the extension direction of the recess, the transmission sleeve is stopped from rotating by the limit stop between the protrusion and the recess.

[0014] Furthermore, the mounting structure includes: a mounting body having a mounting hole; a coupling arranged on the mounting body, one end of the coupling being connected to the transmission rod, and a driving structure arranged on the coupling and connected to the other end of the coupling.

[0015] According to the present invention, at least a portion of the sealing device is located within the pipeline. The extrusion assembly of the sealing device is mounted on a mounting structure. The extrusion assembly includes at least two opposing extrusion members that surround an extrusion space. At least a portion of the sealing structure is made of an elastic material, and at least a portion of the sealing structure is located within the extrusion space. At least one extrusion member can move toward or away from at least one other extrusion member to adjust the size of the extrusion space. During the process of elastically deforming the sealing structure within the extrusion space, when at least a portion of the outer circumference of the sealing structure abuts against the inner wall of the pipeline, the sealing structure seals the pipeline. In this way, a worker only needs to insert the sealing structure of the sealing device into the pipeline and then operate the extrusion member to elastically deform the sealing structure to seal the pipeline. After the test is completed, the worker only needs to operate the extrusion member to restore the elastic deformation of the sealing structure and remove the sealing device. The overall operation steps are very fast. Furthermore, when testing another batch of pipelines with different specifications, the worker only needs to adjust the movement of the extrusion member, without having to find a sealing flange of the matching specifications. This greatly improves the overall testing efficiency of the pipeline pressure test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a sealing device according to the present utility model is shown;

[0018] Figure 2 Shown Figure 1 A schematic diagram of the three-dimensional structure of the sealing device after the extrusion part, sealing structure and transmission rod are assembled;

[0019] Figure 3 Shown Figure 1 A schematic diagram of the three-dimensional structure of the sealing device installation structure and the transmission component after assembly;

[0020] Figure 4 Used Figure 1 Schematic diagram of the three-dimensional structure of the driving structure of the sealing device and the coupling after assembly.

[0021] The above drawings include the following reference numerals:

[0022] 10. Mounting structure; 11. Mounting hole; 111. First mating portion; 12. Mounting body; 13. Coupling;

[0023] 20. Extrusion assembly; 21. Extrusion space; 22. First extrusion member; 23. Second extrusion member;

[0024] 30. Sealing structure;

[0025] 40. Drive structure;

[0026] 50. Transmission assembly; 51. Transmission rod; 52. Transmission sleeve; 53. Second mating portion. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directional words such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0030] In order to solve the problem of low efficiency of pipeline pressure testing in the prior art, the present application provides a sealing device.

[0031] like Figures 1 to 4 As shown, at least part of the sealing device is located within the pipeline. The sealing device includes a mounting structure 10 and an extrusion assembly 20, namely a sealing structure 30. The extrusion assembly 20 is disposed on the mounting structure 10. The extrusion assembly 20 includes at least two oppositely disposed extrusion members, which surround and form an extrusion space 21. At least part of the sealing structure 30 is made of an elastic material, and at least part of the sealing structure 30 is located within the extrusion space 21. At least one extrusion member can move toward or away from at least another extrusion member to adjust the size of the extrusion space 21. During the process of elastic deformation of the sealing structure 30 caused by the extrusion space 21, when at least part of the outer circumference of the sealing structure 30 abuts against the inner wall of the pipeline, the sealing structure 30 seals the pipeline.

[0032] Using the technical solution of this embodiment, at least part of the sealing device is located within the pipeline. The extrusion assembly 20 of the sealing device is arranged on the mounting structure 10. The extrusion assembly 20 includes at least two oppositely arranged extrusion members, which surround and form an extrusion space 21. At least part of the sealing structure 30 is made of an elastic material, and at least part of the sealing structure 30 is located within the extrusion space 21. Among them, at least one extrusion member can move toward or away from at least another extrusion member to adjust the size of the extrusion space 21. During the process of elastically deforming the sealing structure 30 by squeezing the extrusion space 21, when at least part of the outer peripheral surface of the sealing structure 30 abuts against the inner wall of the pipeline, the sealing structure 30 seals the pipeline. In this way, the operator only needs to first insert the sealing structure 30 of the sealing device into the pipeline, and then operate the extrusion member to move the sealing structure 30 to elastically deform it to seal the pipeline. After the test is completed, the sealing device can be withdrawn by simply operating the extrusion member to restore the elastic deformation of the sealing structure 30. The overall operation steps are very quick. At the same time, when another batch of pipes with different specifications needs to be tested, the staff only needs to adjust the movement of the extrusion parts without having to look for sealing flanges of matching specifications, thereby greatly improving the overall testing efficiency of the pipeline pressure test.

[0033] In this embodiment, the sealing structure 30 is entirely made of rubber.

[0034] It should be noted that the material of the sealing structure 30 is not limited thereto, and any elastic material with good sealing performance can be used.

[0035] like Figures 1 to 4 As shown, the sealing device also includes a drive structure 40, which is drivably connected to at least one extrusion member. The drive structure 40 adjusts the size of the extrusion space 21 by driving the extrusion member toward or away from another extrusion member. In this way, the drive structure 40 can drive the extrusion member toward or away from another extrusion member, thereby reducing the operating difficulty and labor intensity of the staff (i.e., the staff only needs to operate the drive structure 40 to start or shut down). At the same time, the above arrangement makes the number of extrusion members drivably connected to the drive structure 40 more flexible and diverse to adapt to different working conditions and usage requirements, and also improves the processing flexibility of the staff.

[0036] like Figures 1 to 4 As shown, the drive structure 40 is arranged on the mounting structure 10, and the mounting structure 10 has a mounting hole 11. The sealing device also includes a transmission assembly 50, at least part of the transmission assembly 50 is located in the mounting hole 11, and the drive structure 40 is driven and connected to at least one extrusion member through the transmission assembly 50.

[0037] Optionally, the driving structure 40 is a motor.

[0038] In this embodiment, at least two extrusion members include a first extrusion member 22 and a second extrusion member 23. The first extrusion member 22 has a through hole. The transmission assembly 50 includes a transmission rod 51 and a transmission sleeve 52. The drive structure 40 is drivingly connected to the transmission rod 51 to drive the transmission rod 51 to rotate. The transmission sleeve 52 is sleeved on the transmission rod 51 and threadedly connected to the transmission rod 51. The first extrusion member 22 is disposed on the end of the transmission sleeve 52 away from the drive structure 40. The end of the transmission rod 51 away from the drive structure 40 extends through the through hole, and the second extrusion member 23 is disposed on this end. In the process of the drive structure 40 driving the transmission rod 51 to rotate, the transmission sleeve 52 extends due to its threaded engagement with the transmission rod 51, thereby driving the first extrusion member 22 to move toward the second extrusion member 23. In this way, the above-mentioned setting realizes the movement between the first extrusion component 22 and the second extrusion component 23 through the threaded cooperation between the transmission sleeve 52 and the transmission rod 51 (that is, when the driving structure 40 drives the transmission rod 51 clockwise or counterclockwise, the transmission sleeve 52 can drive the first extrusion component 22 toward or away from the second extrusion component 23 under the threaded cooperation), thereby making the overall structure of the sealing device simpler, easier to process and realize.

[0039] Specifically, a structure similar to a lead screw nut is actually formed between the transmission rod 51 and the transmission sleeve 52 .

[0040] In this embodiment, the thread structure between the transmission rod 51 and the transmission sleeve 52 is a trapezoidal thread. Compared to conventional threads, trapezoidal threads can withstand greater torque, thereby ensuring that the first extrusion member 22 can apply greater extrusion force to the sealing structure 30 and improving the extrusion reliability of the extrusion member. Furthermore, the trapezoidal thread has excellent self-locking properties. That is, after the sealing structure 30 is squeezed, the transmission rod 51 can avoid being pushed and rotated by the elastic force of the sealing structure 30 due to the self-locking effect of the trapezoidal thread, and can drive the first extrusion member 22 to move away from the second extrusion member 23, thereby improving the sealing reliability of the sealing device.

[0041] Optionally, an external thread is processed on the outer circumferential surface of the transmission rod 51 , and an internal thread is processed on the inner hole wall of the transmission sleeve 52 .

[0042] like Figures 1 to 4 As shown, the first extruded member 22 is plate-shaped, and the second extruded member 23 is plate-shaped. The first extruded member 22 and the second extruded member 23 face each other to form an extrusion space 21. This arrangement simplifies the structure of the first extruded member 22 and the second extruded member 23, making them easier to manufacture and implement. This not only reduces the difficulty of manufacturing for the operator, but also reduces the manufacturing cost of the sealing device.

[0043] like Figures 1 to 4As shown, the sealing structure 30 is plate-shaped and has a through hole, and the sealing structure 30 can be movably mounted on the transmission rod 51; wherein, the projection of the first extrusion member 22 on the sealing structure 30 is located inside the sealing structure 30; and / or, the projection of the second extrusion member 23 on the sealing structure 30 is located inside the sealing structure 30. In this way, the above-mentioned arrangement makes the size of the first extrusion member 22 and the second extrusion member 23 smaller than the size of the sealing structure 30, so as to ensure that the sealing structure 30 can be squeezed to abut against the inner wall of the pipe, thereby improving the sealing reliability of the sealing device. At the same time, making the sealing structure 30 movably mounted on the transmission rod 51 not only helps it to restore elastic deformation, but also makes the sealing structure 30 and the transmission rod 51 detachable, so that the staff can replace the sealing structure of different sizes.

[0044] Specifically, the staff can replace the sealing structure 30 according to the actual size of the pipeline, thereby improving the versatility of the sealing device.

[0045] In this embodiment, the second extrusion member 23 is rotatably disposed on the end of the transmission rod 51 away from the drive structure 40. Because the surface friction coefficient of the sealing structure 30 is relatively large and the first extrusion member 22 rotates while extruding the sealing structure 30 (i.e., drives the sealing structure 30 to rotate), the second extrusion member 23 is rotatable, allowing it to rotate with the sealing structure 30, thereby preventing the second extrusion member 23 from falling off or being damaged, thereby extending the service life of the second extrusion member 23.

[0046] like Figures 1 to 4 As shown, a first mating portion 111 is provided on the wall of the mounting hole 11, and a second mating portion 53 is provided on the outer circumference of the transmission sleeve 52. One of the first mating portion 111 and the second mating portion 53 is a protrusion, and the other is a recess. The protrusion extends into the recess and is slidably arranged along the extension direction of the recess. The extension direction of the recess coincides with the extension direction of the transmission rod 51. When the transmission sleeve 52 moves along the extension direction of the recess, the limit stop between the protrusion and the recess prevents the transmission sleeve 52 from rotating. In this way, the above arrangement of the first mating portion 111 and the second mating portion 53 not only guides the movement direction of the transmission sleeve 52, but also prevents the transmission sleeve 52 from rotating, preventing the transmission sleeve 52 from rotating and thus preventing the first extrusion member 22 from moving. Furthermore, this arrangement makes the structure of the first mating portion 111 and the second mating portion 53 more flexible and diverse, adapting to different working conditions and usage requirements, and also improving the processing flexibility of the staff.

[0047] In this embodiment, the first matching portion 111 is a recess, and the second matching portion 53 is a protrusion.

[0048] Specifically, the first matching portion 111 is an external spline groove, and the second matching portion 53 is an internal spline.

[0049] In this embodiment, the mounting structure 10 includes a mounting body 12 and a coupling 13. The mounting body 12 has a mounting hole 11. The coupling 13 is mounted on the mounting body 12, one end of which is connected to the transmission rod 51. The drive structure 40 is mounted on the coupling 13 and connected to the other end of the coupling 13. Thus, this arrangement enables a driving connection between the mounting structure 10 and the drive structure 40 via the coupling 13.

[0050] Specifically, the sealing device in this embodiment is actually an integrated structure. When in use, the staff only needs to extend one end of the sealing device with the sealing structure 30 into the pipeline, and then operate the driving structure 40 to start it. Similarly, after the test is completed, the staff only needs to operate the driving structure 40 to rotate in the opposite direction. The overall sealing operation process is very simple and quick. Considering that the sealing structure 30 will undergo elastic deformation, in fact, for pipelines within a certain specification range, the sealing device can be used to seal. When encountering a large difference in the specifications of the pipelines, continue to disassemble the second extrusion part 23 and replace the sealing structure 30.

[0051] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0052] At least a portion of the sealing device is located within the pipeline. The extrusion assembly of the sealing device is mounted on a mounting structure. The extrusion assembly includes at least two opposing extrusion members that surround an extrusion space. At least a portion of the sealing structure is made of an elastic material, and at least a portion of the sealing structure is located within the extrusion space. At least one of the extrusion members can move toward or away from at least one other extrusion member to adjust the size of the extrusion space. During the process of elastically deforming the sealing structure within the extrusion space, when at least a portion of the outer circumference of the sealing structure abuts the inner wall of the pipeline, the sealing structure seals the pipeline. In this way, a worker only needs to insert the sealing structure of the sealing device into the pipeline and then operate the extrusion member to elastically deform the sealing structure to seal the pipeline. After the test is completed, the worker only needs to operate the extrusion member to restore the elastic deformation of the sealing structure and then remove the sealing device. The overall operation steps are very fast. Furthermore, when testing another batch of pipelines with different specifications, the worker only needs to adjust the movement of the extrusion member, without having to find a sealing flange of the matching specifications, thereby greatly improving the overall testing efficiency of the pipeline pressure test.

[0053] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0055] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A sealing device, at least part of which is located inside a pipe, characterized in that: The sealing device comprises: Mounting structure (10); An extrusion assembly (20) is arranged on the mounting structure (10), the extrusion assembly (20) comprising at least two extrusion members arranged opposite to each other, the at least two extrusion members surrounding each other to form an extrusion space (21); a sealing structure (30), at least a portion of the sealing structure (30) being made of an elastic material, and at least a portion of the sealing structure (30) being located within the extrusion space (21); At least one of the extrusion members can move toward or away from at least another of the extrusion members to adjust the size of the extrusion space (21). During the process of elastic deformation of the sealing structure (30) caused by squeezing the sealing structure (30) in the extrusion space (21), when at least a portion of the outer peripheral surface of the sealing structure (30) abuts against the inner wall of the pipe, the sealing structure (30) seals the pipe.

2. The sealing device according to claim 1, characterized in that The sealing device further comprises: A driving structure (40) is drivingly connected to at least one of the extrusion members, and the driving structure (40) adjusts the size of the extrusion space (21) by driving the extrusion member to move toward or away from another extrusion member.

3. The sealing device according to claim 2, characterized in that The driving structure (40) is arranged on the mounting structure (10), the mounting structure (10) has a mounting hole (11), and the sealing device further comprises: A transmission assembly (50), at least a portion of the transmission assembly (50) is located in the mounting hole (11), and the driving structure (40) is drivingly connected to at least one of the extrusion members through the transmission assembly (50).

4. The sealing device according to claim 3, characterized in that At least two of the extrusion members include a first extrusion member (22) and a second extrusion member (23), wherein the first extrusion member (22) has a through hole, and the transmission assembly (50) includes: A transmission rod (51), wherein the driving structure (40) is drivingly connected to the transmission rod (51) to drive the transmission rod (51) to rotate; a transmission sleeve (52) sleeved on the transmission rod (51) and threadedly connected to the transmission rod (51); the first extrusion member (22) being arranged on an end of the transmission sleeve (52) away from the driving structure (40); an end of the transmission rod (51) away from the driving structure (40) extending through the through hole; and the second extrusion member (23) being arranged on the end; In the process of the driving structure (40) driving the transmission rod (51) to rotate, the transmission sleeve (52) extends out under the threaded cooperation with the transmission rod (51) to drive the first extrusion member (22) to move toward the second extrusion member (23).

5. The sealing device according to claim 4, characterized in that The thread structure between the transmission rod (51) and the transmission sleeve (52) is a trapezoidal thread.

6. The sealing device according to claim 4, characterized in that The first extrusion piece (22) is plate-shaped, the second extrusion piece (23) is plate-shaped, and the plate surfaces of the first extrusion piece (22) and the second extrusion piece (23) facing each other surround and form the extrusion space (21).

7. The sealing device according to claim 4, characterized in that The sealing structure (30) is plate-shaped and has a through hole, and the sealing structure (30) can be movably sleeved on the transmission rod (51); Wherein, the projection of the first extrusion member (22) on the sealing structure (30) is located within the sealing structure (30); and / or the projection of the second extrusion member (23) on the sealing structure (30) is located within the sealing structure (30).

8. The sealing device according to claim 4, characterized in that The second extruding member (23) is rotatably arranged on an end of the transmission rod (51) away from the driving structure (40).

9. The sealing device according to claim 4, characterized in that A first matching portion (111) is provided on the hole wall of the mounting hole (11), and a second matching portion (53) is provided on the outer peripheral surface of the transmission sleeve (52); one of the first matching portion (111) and the second matching portion (53) is a protrusion, and the other of the first matching portion (111) and the second matching portion (53) is a recess; the protrusion extends into the recess and is slidably provided along the extension direction of the recess; The extending direction of the recess is consistent with the extending direction of the transmission rod (51), so that when the transmission sleeve (52) moves along the extending direction of the recess, the transmission sleeve (52) is stopped from rotating by a limit stop between the protrusion and the recess.

10. The sealing device according to claim 4, characterized in that The mounting structure (10) comprises: A mounting body (12) having the mounting hole (11); A coupling (13) is arranged on the mounting body (12), one end of the coupling (13) is connected to the transmission rod (51), and the driving structure (40) is arranged on the coupling (13) and connected to the other end of the coupling (13).

Images