A large deformation compensation sealing device

Abstract

The application discloses a large-deformation compensation sealing device, which comprises a sealing assembly, adjacent first and second pipelines, and the sealing assembly is arranged at the abutment interval of the first and second pipelines; the sealing assembly comprises a flange group, a V-shaped combined seal, an elastic connecting piece and an adjusting and pressing mechanism; the flange group comprises two flanges, which are respectively arranged on the first and second pipelines and connected through the elastic connecting piece; the V-shaped combined seal comprises at least one V-shaped sealing ring, and the V-shaped opening of the V-shaped sealing ring faces the abutment interval; the adjusting and pressing mechanism comprises a spring, an adjusting member and a pressing plate, the adjusting member is connected with the elastic connecting piece through the spring, the adjusting member abuts against the pressing plate, and the pressing plate presses the V-shaped combined seal. The large-deformation compensation sealing device can effectively compensate the large deformation of the pipelines, improve the adaptability to the large deformation, and maintain the long-term stable sealing of the pipeline connection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing, in particular to a large deformation compensation sealing device. BACKGROUND

[0002] The pipeline expansion joint, also known as a compensator, is used to compensate for the large displacement deformation of the two sides of the pipeline to ensure the sealing effect when the two sides of the pipeline are displaced and deformed.

[0003] At present, the sealing of the pipeline expansion joint is mostly welded with a U-shaped pipe and the two sides of the pipeline, and the deformation of the corrugated part in the U-shaped pipe is used for compensation. The sealing between the existing compressed air chamber lining is mostly a sealing strip.

[0004] However, the existing sealing structure is complex to process, the weld joint is prone to leakage, the sealing performance is poor, and the ability to adapt to large deformation is weak. SUMMARY

[0005] The present application provides a large deformation compensation sealing device, which aims to at least solve the technical problems of poor sealing performance and weak ability to adapt to large deformation of the sealing structure in the prior art.

[0006] The present application provides a large deformation compensation sealing device, comprising a sealing assembly, adjacent first and second pipelines, and a butt joint interval between the first and second pipelines, the sealing assembly being arranged at the butt joint interval of the first and second pipelines;

[0007] The sealing assembly comprises a flange group, a V-shaped combined seal, an elastic connecting piece and an adjusting and pressing mechanism, the flange group comprises two flanges, the two flanges are respectively installed on the first and second pipelines, and the two flanges are connected by the elastic connecting piece;

[0008] The V-shaped combined seal is installed between the two flanges, the V-shaped combined seal is wrapped around the outside of the first and second pipelines, and the V-shaped combined seal comprises at least one V-shaped sealing ring, the V-shaped opening of the V-shaped sealing ring faces the butt joint interval;

[0009] The adjusting and pressing mechanism comprises a spring, an adjusting member and a pressing plate, the adjusting member is connected to the elastic connecting piece by the spring, the adjusting member abuts against the pressing plate, the pressing plate presses the V-shaped combined seal, so that the two ends of the V-shaped combined seal abut against the inner side walls of the two flanges, and the first and second pipelines are in an undeformed state, and the spring is in a compressed state.

[0010] Optionally, the V-shaped combined seal is internally formed with a sealing space, the first pipeline and the second pipeline are internally formed with a high-pressure side area, the sealing space is communicated with the high-pressure side area, and the pressure of the high-pressure side area is used to make the two ends of the V-shaped combined seal abut against the inner sidewalls of the two flanges respectively.

[0011] Optionally, the adjusting member comprises a support plate and an adjusting bolt, the support plate and the pressing plate are located between the two flanges in the flange group, and the support plate is connected with the elastic connecting piece through a spring.

[0012] The adjusting bolt penetrates through the elastic connecting piece, the support plate is provided with a threaded through hole, the adjusting bolt is screwed with the threaded through hole, the bottom end of the adjusting bolt protrudes from the support plate, and the bottom end of the adjusting bolt abuts against the pressing plate.

[0013] When the first pipeline and the second pipeline are in an undeformed state, the inner sidewalls of the two flanges are used to limit the rotation of the support plate.

[0014] Optionally, the shape of the cross section of the support plate perpendicular to the axial direction of the flange is arc-shaped, and the chord length of the arc-shaped cross section is greater than the distance between the inner sidewalls of the two flanges.

[0015] When the first pipeline and the second pipeline are in an undeformed state, the distance between the support plate and the inner sidewalls of the flanges in the axial direction of the flange is less than or equal to 5 mm.

[0016] Optionally, the number of V-shaped sealing rings in the V-shaped combined seal is at least two, and the at least two V-shaped sealing rings are arranged in a stacked manner in the radial direction of the flange.

[0017] Optionally, the number of the adjusting and pressing mechanisms is at least two, and the at least two adjusting and pressing mechanisms are arranged in a spaced manner in the circumferential direction of the flange.

[0018] Optionally, the spring is sleeved on the adjusting bolt, one end of the spring is connected with the elastic connecting piece, and the other end of the spring is connected with the support plate.

[0019] Optionally, the pressing plate is provided with a groove near the upper surface of the support plate, and the bottom end of the adjusting bolt extends into the groove.

[0020] Optionally, the elastic connecting piece is provided with a via hole, the adjusting bolt comprises a rod portion and a head portion, and the via hole is used for allowing the rod portion of the adjusting bolt to penetrate through.

[0021] Optionally, the elastic connecting member is a ring-shaped spring plate, the ring-shaped spring plate is sleeved on the circumferential outer surface of the two flanges, and two ends of the ring-shaped spring plate are connected with the two flanges in the axial direction of the flanges.

[0022] Optionally, the two ends of the ring-shaped spring plate are connected with the two flanges through two fastener groups in the axial direction of the flanges.

[0023] Each fastener group comprises a plurality of fastening bolts, and the plurality of fastening bolts are arranged at intervals in the circumferential direction of the flange; and a plurality of connecting holes corresponding to the plurality of fastening bolts are formed in each flange.

[0024] Optionally, the distance between the inner side walls of the two flanges in the axial direction of the flanges is greater than the width of the abutting interval of the first pipeline and the second pipeline.

[0025] Optionally, the axial direction of the first pipeline is parallel to the axial direction of the second pipeline, and the two flanges are fixedly connected to the first pipeline and the second pipeline, respectively.

[0026] The two flanges each have an inner hole, and the inner hole of one of the flanges is sleeved on the outer surface of the first pipeline, and the inner hole of the other flange is sleeved on the outer surface of the second pipeline.

[0027] In the embodiment of the application, when the first pipeline and the second pipeline are in an undeformed state, the spring is in a compressed state, and under the action of the spring force of the spring, the adjusting member abuts against the pressing plate, and the V-shaped combined seal is pressed by the pressing plate, so that the sealing effect is ensured. When the first pipeline and / or the second pipeline is deformed, the elasticity of the spring enables the adjusting member and the pressing plate to adapt and continue to press the V-shaped combined seal, so that the sealing performance is maintained. Therefore, the large-deformation compensation sealing device provided by the embodiment of the application can effectively compensate for the large deformation of the pipeline, improve the adaptability to large deformation, and maintain the long-term stable sealing of the pipeline connection, ensure the sealing effect, and improve the reliability and safety of the system. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description.

[0029] Figure 1 Structure diagram of the large-deformation compensation sealing device provided by the embodiment of the application Figure One ;

[0030] Figure 2 Structure diagram of the large-deformation compensation sealing device provided by the embodiment of the application Figure Two.

[0031] Reference signs:

[0032] 1-First pipe, 2-Second pipe, 3-Flange, 4-Elastic connecting piece, 5-V-shaped combined seal, 51-V-shaped sealing ring, 6-Adjusting compression mechanism, 61-Spring, 62-Adjusting bolt, 63-Supporting plate, 64-Compression plate, 7-Fastening bolt, 8-Butt joint interval, 9-Sealing space, 10-High pressure side area. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0034] The embodiments of the present application are only used for explaining the present application, and are not used for limiting the scope of the present application. In the following paragraphs, the present application is described in more detail with examples by referring to the drawings. It should be noted that the drawings are all simplified and use non-precise proportions, and are only used for the purpose of conveniently and clearly assisting the description of the embodiments of the present application.

[0035] At present, the sealing of the pipe expansion joint is mostly welding of the U-shaped pipe and the pipes on both sides, and the deformation of the U-shaped part is used for compensation. The sealing between the existing compressed air chamber lining is mostly a sealing strip. However, the existing sealing structure is complex in processing, the weld joint is prone to leakage, the sealing performance is poor, and the ability to adapt to large deformation is weak. In order to solve the above problems, the embodiments of the present application provide a large deformation compensation sealing device, and the large deformation compensation sealing device mentioned above will be described in detail.

[0036] Reference Figure 1 and Figure 2The embodiment of the present application provides a large deformation compensation sealing device, which comprises a sealing assembly, adjacent first pipeline 1 and second pipeline 2, and has a butt joint interval 8 between the first pipeline 1 and the second pipeline 2, and the sealing assembly is arranged at the butt joint interval 8 of the first pipeline 1 and the second pipeline 2; the sealing assembly comprises a flange group, a V-shaped combined seal 5, an elastic connecting piece 4 and an adjusting and pressing mechanism 6, the flange group comprises two flanges 3, the two flanges 3 are respectively installed on the first pipeline 1 and the second pipeline 2, and the two flanges 3 are connected through the elastic connecting piece 4; the V-shaped combined seal 5 is installed between the two flanges 3, the V-shaped combined seal 5 is wrapped outside the first pipeline 1 and the second pipeline 2, the V-shaped combined seal 5 comprises at least one V-shaped sealing ring 51, and the V-shaped opening of the V-shaped sealing ring 51 faces the butt joint interval; the adjusting and pressing mechanism 6 comprises a spring 61, an adjusting member and a pressing plate 64, the adjusting member is connected with the elastic connecting piece 4 through the spring 61, the adjusting member abuts against the pressing plate 64, the pressing plate 64 presses the V-shaped combined seal 5, so that the two ends of the V-shaped combined seal 5 abut against the inner side walls of the two flanges 3 respectively, and the spring 61 is in a compressed state when the first pipeline 1 and the second pipeline 2 are in an undeformed state.

[0037] Among them, the large deformation compensation sealing device provided by the embodiment of the present application can be applied to large pipeline expansion joint sealing and can also be applied to sealing between compressed air chambers. The large deformation compensation sealing device is preferably applied to the scene of large pipeline expansion joint sealing, the scene of compressed air chamber, etc.

[0038] The first pipeline 1 and the second pipeline 2 are adjacent, and the first pipeline 1 and the second pipeline 2 have a butt joint interval 8, and the sealing assembly is arranged at the butt joint interval 8 of the first pipeline 1 and the second pipeline 2. The two flanges in the flange group can be symmetrically arranged. The elastic connecting piece 4 connects the two flanges 3. When one of the flanges 3 deforms with the deformation of the pipeline, the relative positions of the two flanges 3 will change, at this time, the elastic connecting piece 4 can adapt to the position change of the two flanges 3 through the elastic deformation of itself. The elastic connecting piece 4 is preferably a ring-shaped spring plate, which is sleeved on the circumferential outer surface of the two flanges 3. The adjusting member can comprise an adjusting bolt 62 and a support plate 63. The elastic connecting piece 4 can seal the support plate 63, the pressing plate 64 and the V-shaped combined seal 5 between the two flanges 3. The spring 61 provides elasticity in the radial direction of the flange 3 to press the support plate 63.

[0039] V-shaped sealing ring 51, also known as a sealing ring with a V-shaped cross-section, is typically made of a wear-resistant and elastic material, such as rubber. The V-shaped sealing ring 51 in the V-shaped combination seal 5 preferably consists of at least two rings, arranged radially stacked along the flange 3, with adjacent rings fitting together. The V-shaped opening of the V-shaped sealing ring 51 faces the mating interval 8, meaning the V-shaped opening of the V-shaped sealing ring 51 faces inward. The inner sidewalls of the two flanges 3 are the sidewalls on the two flanges 3 that are opposite and close to each other. When both the first pipe 1 and the second pipe 2 are in an undeformed state, the spring 61 is in a compressed state. At this time, the compression of the spring 61 can be greater than 50% of its original length, preferably greater than 75% of its original length.

[0040] Preferably, along the axial direction of the flange 3, the distance between the inner walls of the two flanges 3 is greater than the width of the mating interval 8 between the first pipe 1 and the second pipe 2. The axial direction of the flange 3 can be referenced... Figure 1 The direction indicated by arrow A. The axial direction of the first pipe 1 is parallel to the axial direction of the second pipe 2. Two flanges 3 are fixedly connected to the first pipe 1 and the second pipe 2 respectively. Both flanges 3 have inner holes, with the inner hole of one flange 3 fitting onto the outer surface of the first pipe 1 and the inner hole of the other flange 3 fitting onto the outer surface of the second pipe 2. The two flanges 3 can be welded to the first pipe 1 and the second pipe 2 respectively.

[0041] When both the first pipe 1 and the second pipe 2 are in an undeformed state, the spring 61 is compressed. Under the spring force of the spring 61, the adjusting component presses against the pressure plate 64, and the V-shaped combination seal 5 is pressed tightly by the pressure plate 64, ensuring a sealing effect. When the first pipe 1 and / or the second pipe 2 deform, the elasticity of the spring 61 allows the adjusting component and the pressure plate 64 to adapt and continue to press the V-shaped combination seal 5, maintaining the sealing performance. In the case of pipe deformation, the deformation adaptability of the V-shaped sealing ring 51 can maintain a tight fit between the V-shaped sealing ring 51 and the inner wall of the flange 3, thereby achieving an effective seal. It should be noted that the deformation of the first pipe 1 and / or the second pipe 2 can be axial deformation, radial deformation, or simultaneous axial and radial deformation.

[0042] For example, refer to Figure 1 At this time, both the first pipe 1 and the second pipe 2 are in an undeformed state, and the spring 61 is in a compressed state. Under the action of the spring force of the spring 61, the adjusting component presses against the pressure plate 64, and the V-type combination seal 5 is pressed by the pressure plate 64. The two ends of the V-type combination seal 5 press against the inner walls of the two flanges 3 respectively. (Refer to...) Figure 2When the second pipeline 2 deforms to the right and downward, the flanges 3 connected with the second pipeline 2 deform along with the deformation of the second pipeline 2, at this time, the elastic connecting member 4 deforms elastically to adapt to the deformation of the flanges 3, and the spring 61 is elongated, and under the action of the spring force of the spring 61, the adjusting member pushes the pressing plate 64 to abut tightly, so that the pressing plate 64 presses the V-shaped combined seal 5, and the two ends of the V-shaped combined seal 5 abut tightly against the inner side walls of the two flanges 3 respectively. It should be noted that when the first pipeline 1 and / or the second pipeline 2 deforms, the spring 61 can still be in a compressed state after being elongated.

[0043] In the embodiment of the present application, when the first pipeline 1 and the second pipeline 2 are both in an undeformed state, the spring 61 is in a compressed state, and under the action of the spring force of the spring 61, the adjusting member abuts tightly against the pressing plate 64, and the V-shaped combined seal 5 is pressed by the pressing plate 64, so as to ensure the sealing effect. When the first pipeline 1 and / or the second pipeline 2 deforms, the elastic action of the spring 61 enables the adjusting member and the pressing plate 64 to adapt to the adjustment and continue to press the V-shaped combined seal 5, so as to maintain the sealing performance. Therefore, the large-deformation compensation sealing device provided by the embodiment of the present application can effectively compensate for the large deformation of the pipeline, improve the adaptability to large deformation, maintain the long-term stable sealing of the pipeline connection, ensure the sealing effect, and improve the reliability and safety of the system.

[0044] In a preferred embodiment of the present application, a sealing space 9 is formed in the inner side of the V-shaped combined seal 5, a high-pressure side area 10 is formed in the inner side of the first pipeline 1 and the second pipeline 2, the sealing space 9 communicates with the high-pressure side area 10, and the pressure of the high-pressure side area 10 is used to make the two ends of the V-shaped combined seal 5 abut tightly against the inner side walls of the two flanges 3 respectively.

[0045] The outer side of the first pipeline 1, the second pipeline 2 and the sealing assembly forms a low-pressure side area. The sealing space 9 communicates with the high-pressure side area 10 through the butt joint interval 8, and the pressure of the high-pressure side area 10 can act on the sealing space 9 and then act on the V-shaped combined seal 5. Through the pressure of the high-pressure side area 10, the fit of the V-shaped combined seal 5 and the inner side walls of the flanges 3 can be enhanced, and then the sealing effect can be improved. When the pipeline deforms, for example, the second pipeline 2 deforms to the right and downward, the pressure of the high-pressure side area 10 continues to act on the V-shaped combined seal 5, so that the two ends of the V-shaped combined seal 5 abut tightly against the inner side walls of the two flanges 3 respectively, so as to further improve the adaptability to large deformation, thereby ensuring that the sealing can be maintained in the case of large deformation of the pipeline.

[0046] In a preferred embodiment of the present application, the adjusting member comprises a support plate 63 and an adjusting bolt 62, the support plate 63 and the pressing plate 64 are both located between the two flanges 3 in the flange group, the support plate 63 is connected with the elastic connecting piece 4 through the spring 61; the adjusting bolt 62 penetrates the elastic connecting piece 4, the support plate 63 is provided with a threaded hole, the adjusting bolt 62 is screwed with the threaded hole, the bottom end of the adjusting bolt 62 protrudes from the support plate 63, and the bottom end of the adjusting bolt 62 abuts against the pressing plate 64; when the first pipeline 1 and the second pipeline 2 are both in the undeformed state, the inner side walls of the two flanges 3 are used to limit the rotation of the support plate 63.

[0047] Preferably, the support plate 63 is not in contact with the pressing plate 64. The shape of the cross section of the support plate 63 perpendicular to the axial direction of the flange 3 is arc-shaped, and the shape of the cross section of the pressing plate 64 perpendicular to the axial direction of the flange 3 is arc-shaped. The radian of the arc is preferably less than π. The threaded hole penetrates the support plate 63 along the thickness direction of the support plate 63. When the first pipeline 1 and the second pipeline 2 are both in the undeformed state, the inner side walls of the two flanges 3 can limit the rotation of the support plate 63, that is, when the adjusting bolt 62 rotates, the support plate 63 will not rotate together.

[0048] Preferably, the shape of the cross section of the support plate 63 perpendicular to the axial direction of the flange 3 is arc-shaped, and the chord length of the arc is greater than the distance between the inner side walls of the two flanges 3; when the first pipeline 1 and the second pipeline 2 are both in the undeformed state, the distance between the support plate 63 and the inner side walls of the flange 3 in the axial direction of the flange 3 is less than or equal to 5 mm.

[0049] When the pipeline is in the undeformed state, the position of the support plate 63 can be adjusted first to adjust the compression amount of the spring 61. The process of adjusting the position of the support plate 63 can include: when the pipeline is in the undeformed state, the bottom end of the adjusting bolt 62 is tightly pressed by the V-shaped combined seal 5 and the pressing plate 64, the adjusting bolt 62 is rotated to move the support plate 63 towards the elastic connecting piece 4, so that the support plate 63 presses the spring 61 to adjust the compression amount of the spring 61.

[0050] When the second pipeline 2 deforms to the right and downward, the spring 61 is elongated, and under the action of the spring force of the spring 61, the support plate 63 is pushed downward, thereby pushing the adjusting bolt 62 threadedly connected with the support plate 63 downward to abut against the pressing plate 64, moving the pressing plate 64 downward, and further pushing the upper end of the V-shaped combined seal 5 to move downward, moving the lower end of the V-shaped combined seal 5 to the two sides, so that the two ends of the V-shaped combined seal 5 abut against the inner side walls of the two flanges 3 respectively to compensate for the deformation of the second pipeline 2. It should be noted that after the first pipeline 1 and / or the second pipeline 2 deforms, the position of the support plate 63 can be adjusted again to adjust the compression amount of the spring 61.

[0051] In a preferred embodiment of the present application, the number of V-shaped sealing rings 51 in the V-shaped combined seal 5 is at least two, and the at least two V-shaped sealing rings 51 are arranged in a radial stacking manner along the flange 3. The number of V-shaped sealing rings 51 in the V-shaped combined seal 5 can be two, three, four, five, six, etc. The number of V-shaped sealing rings 51 in the V-shaped combined seal 5 is preferably three to four. By arranging at least two V-shaped sealing rings 51, the sealing effect is improved.

[0052] In a preferred embodiment of the present application, the number of adjusting and pressing mechanisms 6 is at least two, and the at least two adjusting and pressing mechanisms 6 are arranged in a circumferential interval manner along the flange 3. The number of adjusting and pressing mechanisms 6 can be two, three, four, etc. The at least two adjusting and pressing mechanisms 6 are preferably arranged uniformly in a circumferential direction of the flange 3. By arranging at least two adjusting and pressing mechanisms 6, the V-shaped combined seal 5 can be uniformly stressed in a circumferential direction of the flange 3 to ensure the sealing effect.

[0053] In a preferred embodiment of the present application, the spring 61 is sleeved on the adjusting bolt 62, one end of the spring 61 is connected with the elastic connecting piece 4, and the other end of the spring 61 is connected with the support plate 63. The pressing plate 64 is provided with a groove on the upper surface close to the support plate 63, and the bottom end of the adjusting bolt 62 extends into the groove. The elastic connecting piece 4 is provided with a through hole, and the adjusting bolt 62 includes a rod portion and a head portion, and the through hole is used for allowing the rod portion of the adjusting bolt 62 to pass through.

[0054] The shape of the groove can be circular, square, etc. The size of the groove is preferably greater than the diameter of the adjusting bolt 62. The position of the groove on the pressing plate 64 corresponds to the position of the threaded through hole on the support plate 63. By arranging the groove, the bottom end of the adjusting bolt 62 can be stably abutted against the pressing plate 64. By arranging the through hole on the elastic connecting piece 4, the rod portion of the adjusting bolt 62 can pass through the elastic connecting piece 4. The head portion and part of the rod portion of the adjusting bolt 62 are exposed to facilitate the rotation of the adjusting bolt 62.

[0055] In addition, when the second pipeline 2 deforms to the right and downward, the flange 3 connected with the second pipeline 2 deforms with the deformation of the second pipeline 2. At this time, the elastic connecting piece 4 deforms elastically to adapt to the deformation of the flange 3. After the elastic connecting piece 4 deforms elastically, the positions of the adjusting bolt 62, the spring 61, the support plate 63 and the pressing plate 64 change correspondingly to ensure that the pressing plate 64 can continue to press the V-shaped convex portion of the V-shaped sealing ring.

[0056] In a preferred embodiment of the present application, the elastic connecting piece 4 is a ring-shaped spring plate, which is sleeved on the circumferential outer surface of the two flanges 3, and the two ends of the ring-shaped spring plate are connected with the two flanges 3 in the axial direction of the flanges 3. In the axial direction of the flanges 3, the two ends of the ring-shaped spring plate are connected with the two flanges 3 through two fastener groups respectively; each fastener group includes a plurality of fastening bolts 7, which are arranged in the circumferential direction of the flanges 3 at intervals, and a plurality of connecting holes corresponding to the plurality of fastening bolts 7 are formed in each flange 3.

[0057] When one of the flanges 3 deforms with the deformation of the pipeline, the relative positions of the two flanges 3 change, at this time, the ring-shaped spring plate can adapt to the position change of the two flanges 3 through its elastic deformation. The number of fastening bolts 7 included in each fastener group can be set according to actual needs, which is not limited in the embodiment. The plurality of fastening bolts 7 are preferably uniformly arranged in the circumferential direction of the flanges 3. The flanges 3 can include a main body portion and an edge protrusion connected to the outer edge of the main body portion, the connecting holes can penetrate through the edge protrusion, and the connecting holes can be threaded holes, at this time, the fastening bolts 7 are threadedly connected with the connecting holes.

[0058] In summary, in the large deformation compensation sealing device provided by the embodiment of the present application, the first pipeline 1 and the second pipeline 2 are both in an undeformed state, and the spring 61 is in a compressed state. Under the action of the spring force of the spring 61, the support plate 63 is pushed, thereby pushing the adjusting bolt 62 threadedly connected with the support plate 63 to abut against and compress the compression plate 64. The V-shaped combined seal 5 is compressed by the compression plate 64, and the two ends of the V-shaped combined seal 5 abut against the inner side walls of the two flanges 3 respectively. At the same time, the pressure of the high-pressure side area 10 acts on the V-shaped combined seal 5, so that the two ends of the V-shaped combined seal 5 abut against the inner side walls of the two flanges 3 respectively.

[0059] When the second pipeline 2 deforms to the right and downward, the spring 61 is elongated, and under the action of the spring force of the spring 61, the support plate 63 is pushed downward, thereby pushing the adjusting bolt 62 threadedly connected with the support plate 63 to abut against and compress the compression plate 64, so that the compression plate 64 moves downward, and in turn pushes the upper end of the V-shaped combined seal 5 to move downward, and the lower end of the V-shaped combined seal 5 moves to both sides, so that the two ends of the V-shaped combined seal 5 abut against the inner side walls of the two flanges 3 respectively. At the same time, the pressure of the high-pressure side area 10 continues to act on the V-shaped combined seal 5, so that the two ends of the V-shaped combined seal 5 abut against the inner side walls of the two flanges 3 respectively, to compensate for the deformation of the second pipeline 2.

[0060] The large deformation compensation sealing device provided by the embodiment of the application can effectively compensate for large deformation of a pipeline, improve the adaptability to large deformation, and maintain long-term stable sealing of a pipeline connection, ensure sealing effect, and improve the reliability and safety of a system.

[0061] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0062] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. When an element is referred to as being "positioned on" another element, it can be directly positioned on the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are used for illustration only and do not limit the position of the element.

[0063] Each of the embodiments in the specification is described in a relevant manner, and the same and similar parts of each of the embodiments can be referred to each other. Each of the embodiments focuses on the difference from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant part can be referred to the part of the method embodiment.

[0064] The above only describes the preferred embodiments of the application and is not used to limit the protection scope of the application. Any modification, equivalent replacement, improvement, and the like within the spirit and principle of the application are included in the protection scope of the application.

[0065] The large deformation compensation sealing device provided by the application is described in detail above, and the principle and implementation mode of the application are described by applying specific examples. The above description of the examples is only used to help understand the structure of the application and its core idea; meanwhile, for those skilled in the art, according to the idea of the application, the specific implementation mode and application range will be changed, and the above description should not be understood as a limitation on the application.

Claims

1. A large deformation compensating sealing device, characterized by, The sealing assembly is arranged at the butt joint interval of the first pipeline and the second pipeline; The sealing assembly comprises a flange group, a V-shaped combined seal, an elastic connecting piece and an adjusting and pressing mechanism, the flange group comprises two flanges, the two flanges are respectively arranged on the first pipeline and the second pipeline, and the two flanges are connected through the elastic connecting piece; The V-shaped combined seal is arranged between the two flanges, surrounds the outside of the first pipeline and the second pipeline, and comprises at least one V-shaped sealing ring, the V-shaped opening of the V-shaped sealing ring faces the butt joint interval; The adjusting and pressing mechanism comprises a spring, an adjusting member and a pressing plate, the adjusting member is connected with the elastic connecting piece through the spring, the adjusting member abuts against the pressing plate, and the pressing plate presses the V-shaped combined seal, so that the two ends of the V-shaped combined seal abut against the inner side walls of the two flanges respectively, and the spring is in a compressed state when the first pipeline and the second pipeline are in an undeformed state.

2. The large deformation compensating seal apparatus of claim 1, wherein, A sealing space is formed in the inner side of the V-shaped combined seal, high-pressure side areas are formed in the inner sides of the first pipeline and the second pipeline, the sealing space communicates with the high-pressure side areas, and the pressure of the high-pressure side areas is used to make the two ends of the V-shaped combined seal abut against the inner side walls of the two flanges respectively.

3. The large deformation compensating seal apparatus of claim 1 or 2, wherein, The adjusting member comprises a support plate and an adjusting bolt, the support plate and the pressing plate are both located between the two flanges in the flange group, and the support plate is connected with the elastic connecting piece through the spring; The adjusting bolt penetrates through the elastic connecting piece, a threaded through hole is formed in the support plate, the adjusting bolt is screwed with the threaded through hole, the bottom end of the adjusting bolt protrudes from the support plate, and the bottom end of the adjusting bolt abuts against the pressing plate; When the first pipeline and the second pipeline are in an undeformed state, the inner side walls of the two flanges are used to limit the rotation of the support plate.

4. The large deformation compensating seal apparatus of claim 3, wherein, The shape of the cross section of the support plate perpendicular to the axial direction of the flange is arc-shaped, and the chord length of the arc-shaped is greater than the distance between the inner side walls of the two flanges; When the first pipeline and the second pipeline are in an undeformed state, the distance between the support plate and the inner side walls of the flange in the axial direction of the flange is less than or equal to 5 mm.

5. The large deformation compensating seal apparatus of claim 1 or 2, wherein, The number of V-shaped sealing rings in the V-shaped combined seal is at least two, and the at least two V-shaped sealing rings are arranged in a stacked manner in the radial direction of the flange.

6. The large deformation compensating seal apparatus of claim 1 or 2, wherein, The number of adjusting and pressing mechanisms is at least two, and the at least two adjusting and pressing mechanisms are arranged in a spaced manner in the circumferential direction of the flange.

7. The large deformation compensating seal apparatus of claim 3, wherein, The spring is sleeved on the adjusting bolt, one end of the spring is connected with the elastic connecting piece, and the other end of the spring is connected with the support plate.

8. The large deformation compensating seal apparatus of claim 3, wherein, The pressing plate is arranged close to the upper surface of the support plate, a groove is formed in the upper surface of the support plate, and the bottom end of the adjusting bolt protrudes into the groove.

9. The large deformation compensating seal apparatus of claim 3, wherein, The elastic connecting piece is provided with a through hole, and the adjusting bolt comprises a rod part and a head part, and the through hole is used for allowing the rod part of the adjusting bolt to pass through.

10. The large deformation compensating seal apparatus of claim 1, wherein, The elastic connecting piece is a ring-shaped spring plate, the ring-shaped spring plate is sleeved on the circumferential outer surfaces of the two flanges, and the two ends of the ring-shaped spring plate are connected with the two flanges in the axial direction of the flanges.

11. The large deformation compensating seal apparatus of claim 10, wherein, The two ends of the ring-shaped spring plate are connected with the two flanges through two fastener groups in the axial direction of the flanges. Each fastener group comprises a plurality of fastening bolts, and the plurality of fastening bolts are arranged at intervals in the circumferential direction of the flanges.

12. The large deformation compensating seal apparatus of claim 1, wherein, The distance between the inner side walls of the two flanges in the axial direction of the flanges is greater than the width of the abutting interval of the first pipeline and the second pipeline.

13. The large deformation compensating seal apparatus of claim 1, wherein, The axial direction of the first pipeline is parallel to the axial direction of the second pipeline, and the two flanges are fixedly connected to the first pipeline and the second pipeline respectively. The two flanges are each provided with an inner hole, the inner hole of one of the flanges is sleeved on the outer surface of the first pipeline, and the inner hole of the other flange is sleeved on the outer surface of the second pipeline.

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