CN112901777A - Special-shaped sealing element and sealing structure - Google Patents
Special-shaped sealing element and sealing structure Download PDFInfo
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- CN112901777A CN112901777A CN202110151714.2A CN202110151714A CN112901777A CN 112901777 A CN112901777 A CN 112901777A CN 202110151714 A CN202110151714 A CN 202110151714A CN 112901777 A CN112901777 A CN 112901777A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The application relates to a special-shaped sealing element and a sealing structure, and relates to the field of structural sealing under a high-temperature and high-speed environment. The special-shaped sealing element comprises a first sealing part, at least two second sealing parts and a third sealing part, wherein all the second sealing parts are arranged at intervals along the outer surface of the first sealing part, and each second sealing part is configured to be: when the first sealing portion is arranged in a surface gap of a workpiece, the second sealing portion is compressed and deformed, a sealing gap is formed between the second sealing portion and the workpiece, the third sealing portion is flaky, one side of the third sealing portion is connected with the outer surface of the first sealing portion, and the third sealing portion can be bent and deformed under the action of external force to assist the first sealing portion and the second sealing portion to be jointly used for sealing the surface gap of the workpiece. The special-shaped sealing element solves the problem that the working performance of a product is influenced due to poor reliability of a surface gap and poor sealing performance of the product which works in an ultrahigh heat flow and ultrahigh speed environment condition in the prior art.
Description
Technical Field
The application relates to the field of structural sealing under high-temperature and high-speed environments, in particular to a special-shaped sealing element and a sealing structure.
Background
At present, the surface protection quality of a product working under the environment conditions of ultrahigh heat flow and ultrahigh speed is of great importance to the service life and reliability of the product, and particularly, the reliability of a surface gap directly influences the success or failure and the working performance of the whole product.
In the related technology, the design scheme is that firstly, an integral structure is adopted, and the outer surface of a product forms a complete and flawless continuous surface, so that the failure of a protective structure caused by local defects is avoided, but the integral structure scheme can only be applied to products with small volume and regular appearance, and the application range is small; the second design scheme adopts a split-splicing scheme, and a spliced gap is processed by adopting a filler mode, so that the outer surface is ensured to be a complete and flawless continuous surface, but influence factors such as inconsistent matching property and uneven adhesive force exist between the filler and the shell, the reliability is reduced, and the filler and the shell are required to be frequently replaced.
Disclosure of Invention
The embodiment of the application provides a special-shaped sealing element and a sealing structure, and aims to solve the problem that the working performance of a product is affected due to poor reliability of a surface gap and poor sealing performance of the product which works in an ultrahigh heat flow and ultrahigh speed environment condition in the related technology.
In a first aspect, there is provided a contour seal comprising:
a first sealing part in a strip shape;
at least two second seals, all of the second seals being spaced apart along an outer surface of the first seal, and each of the second seals being configured to: when the first sealing part is arranged in a surface gap of a workpiece, the second sealing part is compressed and deformed, and a sealing gap is formed between the second sealing part and the workpiece;
and the third sealing part is in a sheet shape, one side of the third sealing part is connected with the outer surface of the first sealing part, and the third sealing part can be bent and deformed under the action of external force so as to assist the first sealing part and the second sealing part to be jointly used for sealing the surface gap of the workpiece.
In some embodiments, the third seal portion comprises:
the first sealing section is sheet-shaped, one side of the first sealing section is connected with the outer surface of the first sealing part, and the first sealing section can be bent and deformed under the action of external force;
the second sealing section is arranged on one side, far away from the first sealing part, of the first sealing section, and comprises a pressure increasing characteristic part, and the pressure increasing characteristic part is used for sealing an opening of a surface gap of the workpiece.
In some embodiments, the second sealing section further comprises a connecting section connected on one side to a side of the first sealing section remote from the first seal and on another side to the pressure increasing feature to form a U-shaped sealing end in cooperation with the pressure increasing feature.
In some embodiments, the pressure increasing feature is disposed on a side of the connecting segment adjacent to the first sealing portion and is integrally connected to the connecting segment.
In some embodiments, a side of the connecting section connected to the first sealing portion extends in a direction away from the pressure increasing feature portion to form a fourth sealing portion, and the fourth sealing portion is sheet-shaped and can be bent and deformed under the action of an external force.
In some embodiments, the number of the second sealing portions is 2, and the second sealing portions are symmetrically distributed along the first sealing portion, the surface profile of the second sealing portion is arc-shaped, the first sealing portion is cylindrical, and the diameter size of the first sealing portion is at least three times that of the second sealing portion.
In a second aspect, there is provided a sealing structure comprising:
an upper cover plate;
one end of the lower cover plate is provided with a first sealing step surface and a second sealing step surface from top to bottom, the first sealing step surface and the second sealing step surface are matched with the corresponding end of the upper cover plate, a connecting gap is reserved between the first sealing step surface and the upper cover plate, a first sealing groove is arranged on the first sealing step surface, a second sealing groove is arranged on the second sealing step surface, and an auxiliary sealing piece is arranged in the second sealing groove;
a profile seal, comprising:
-a first sealing portion being elongated and arranged in said first sealing groove;
-at least two second seals, all of which are spaced along an outer surface of the first seal, and each of which is configured to: when the first sealing part is arranged between the upper cover plate and the lower cover plate and positioned in the sealing groove, the second sealing part is compressed and deformed, and a sealing gap is formed between the second sealing part and the first sealing part and the sealing groove;
the third sealing part is in a sheet shape, one side of the third sealing part is connected with the outer surface of the first sealing part, and the third sealing part is arranged on the first sealing step surface and attached along the surface contour of the first sealing step surface so as to assist the first sealing part and the second sealing part to jointly seal the connecting gap.
In some embodiments, the third seal portion comprises:
the first sealing section is sheet-shaped, one side of the first sealing section is connected with the outer surface of the first sealing part, and the first sealing section is arranged on the first sealing step surface and attached along the surface contour of the first sealing step surface;
the second sealing section is arranged on one side, far away from the first sealing part, of the first sealing section, and comprises a pressure increasing characteristic part, and the pressure increasing characteristic part is used for sealing the opening of the connecting gap.
In some embodiments, the second sealing section further comprises a connecting section connected on one side to a side of the first sealing section remote from the first seal and on another side to the pressure increasing feature to form a U-shaped sealing end in cooperation with the pressure increasing feature.
In some embodiments, a side of the connecting section connected to the first sealing portion extends in a direction away from the pressure increasing feature to form a fourth sealing portion, and the fourth sealing portion is sheet-shaped and attached along surface profiles of the first sealing step surface and the second sealing step surface.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a special-shaped sealing element, which comprises a first sealing part, at least two second sealing parts and a third sealing part, wherein the second sealing parts are arranged at intervals along the outer surface of the first sealing part; in addition, still be equipped with the third sealing on the surface of first sealing, it can be under the effect of external force bending deformation to supplementary first sealing and second sealing are used for sealing the surface gap of work piece jointly, further consolidate sealed effect, realize the protection of product under the super high heat flow super high speed environment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a contour seal provided in an embodiment of the present application without a fourth seal portion;
FIG. 2 is a schematic structural diagram of a contour seal including a fourth seal portion according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a sealing structure provided in an embodiment of the present application;
fig. 4 is an enlarged view of the area of fig. 3A.
In the figure: 1-a first seal, 2-a second seal, 20-a seal gap, 3-a third seal, 30-a first seal segment, 31-a second seal segment, 32-a pressure increasing feature, 33-a connecting segment, 4-a fourth seal, 5-an upper cover plate, 6-a lower cover plate, 60-a first seal step face, 61-a connecting gap, 62-a second seal step face, 70-a first seal groove, 71-a second seal groove, 8-an auxiliary seal.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a special-shaped sealing element, which can solve the problems that the working performance of a product is influenced due to poor reliability and poor sealing performance of a surface gap of the product working under an ultrahigh-heat flow and ultrahigh-speed environment condition in the related art.
Referring to fig. 1, the contour seal includes a first seal portion 1, at least two second seal portions 2 and a third seal portion 3, the first seal portion 1 is in a long strip shape, the length of the first seal portion is consistent with the length of a workpiece to be sealed, all the second seal portions 2 are arranged at intervals along the outer surface of the first seal portion 1, and each second seal portion 2 is configured to: when the first sealing part 1 is arranged in a surface gap of a workpiece, the second sealing part 2 is compressed and deformed, and a sealing gap 20 is formed between the first sealing part 1 and the workpiece; the third sealing portion 3 is the surface that the slice just one side linked to each other with first sealing portion 1, and the third sealing portion 3 can be under the effect of external force buckling deformation to supplementary first sealing portion 1 and second sealing portion 2 are used for sealing the surface gap of work piece jointly.
Specifically, as shown in fig. 3 and 4, from the perspective of structural design, the number of the second sealing portions 2 is preferably 2, and when the special-shaped sealing element is generally used for sealing, a groove structure is correspondingly arranged on a workpiece, the cross section of the groove structure is generally square, the first sealing portion 1 is embedded in the groove structure, and when the workpieces are buckled with each other, the first sealing portion 1 is extruded and deformed; 2 second sealing 2 just symmetry locate on first sealing 1's the lower half structure both sides, and the position corresponds with the apex angle position of groove structure, when first sealing 1 extrusion deformation, 2 second sealing 2 can fill the apex angle department, and 2 second sealing 2 and the department of meeting of first sealing 1, because the particularity of structure leads to can not being filled, consequently, each second sealing 2 all can and first sealing 1 and groove structure between form a sealing gap 20, be equivalent to form pneumatic seal in the inslot, the sealing effect of its own has been strengthened, guarantee leakproofness and the protective effect of work piece under the special environment of super high heat flow rate.
Further, the third sealing portion 3 specifically includes a first sealing section 30 and a second sealing section 31, wherein the first sealing section 30 is sheet-shaped, and one side of the first sealing section is connected with the outer surface of the first sealing portion 1, and the first sealing section 30 can be bent and deformed under the action of an external force; the second sealing section 31 is provided on a side of the first sealing section 30 remote from the first seal 1, the second sealing section 31 comprising a pressure increasing feature 32, the pressure increasing feature 32 being for sealing at an opening of a surface gap of a workpiece.
Further, the second sealing section 31 further comprises a connecting section 33, one side of the connecting section 33 is connected with one side of the first sealing section 30 away from the first sealing portion 1, and the other side is connected with the pressure increasing feature 32 to form a U-shaped sealing end together with the pressure increasing feature 32.
Specifically, since the workpiece has a certain thickness, in addition to the sealing at the groove structure, other places on the cross section of the surface gap need to be sealed, and then a third sealing portion 3 connected to the outer surface of the first sealing portion 1 is further provided, wherein the first sealing section 30 is in a sheet shape, so that the first sealing section can fill the surface gap and can be bent along the surface contour and the trend of the surface gap; the connecting section 33 and the pressure increasing characteristic portion 32 jointly form a U-shaped sealing end which is still flaky on the whole, the U-shaped sealing end is just located at the opening of the surface gap, the sealing performance of the opening can be well guaranteed, theoretically, the opening is relatively weak, leakage is easy to occur, the U-shaped sealing end is arranged together with the first sealing portion 1, and the sealing performance of the surface gap existing between workpieces due to splicing is guaranteed as much as possible.
Further, from the viewpoint of structural design, the pressure increasing feature 32 is provided on the side of the connecting section 33 close to the first sealing portion 1, and is integrally connected to the connecting section 33.
Further, as shown in fig. 2, a side of the connecting section 33 connected to the first sealing portion 1 extends in a direction away from the pressure increasing feature 32 to form a fourth sealing portion 4, and the fourth sealing portion 4 is in a sheet shape and can be bent and deformed under an external force. In general, gaps generated by splicing exist on two sides of the groove structure, even splicing corners exist, if the corners exist, the workpieces are in rigid contact, so that the tightness is relatively poor, and the tightness is also a key point of sealing, and the tightness of the part, close to the inner surface of the workpiece, of the groove structure is ensured by the arrangement of the fourth sealing part 4.
Further, the number of the second sealing parts 2 is 2, and the second sealing parts 2 are symmetrically distributed along the first sealing part 1, the surface profile of the second sealing part 2 is arc-shaped, the first sealing part 1 is cylindrical, and the diameter size of the first sealing part 1 is at least three times of the diameter size of the second sealing part 2.
The special-shaped sealing element is used for sealing surface gaps with the width of 2mm and the depth of 16mm in an environment with the temperature of 1200 ℃ and the speed of 3400m/s, can meet sealing tests for 30min at least for 3 times at each time, and all meets the standards and requirements.
The present application further provides a sealing structure, see fig. 3, the sealing structure includes an upper cover plate 5, a lower cover plate 6, and a special-shaped sealing element disposed at the joint of the upper cover plate 5 and the lower cover plate 6, wherein, in order to ensure the sealing performance, one end of the lower cover plate 6 is provided with a first sealing step surface 60 and a second sealing step surface 62 from top to bottom, the first sealing step surface 60 and the second sealing step surface 62 are engaged with the corresponding end of the upper cover plate 5, and a connection gap 61 is present between the first sealing step surface 60 and the upper cover plate 5, the first sealing step surface 60 is provided with a first sealing groove 70, the second sealing step surface 62 is provided with a second sealing groove 71, and the second sealing groove 71 is provided with an auxiliary sealing element 8. The special-shaped sealing element specifically comprises a first sealing part 1, at least two second sealing parts 2 and a third sealing part 3, wherein the first sealing part 1 is in a long strip shape and is arranged in a first sealing groove 70, all the second sealing parts 2 are arranged along the outer surface of the first sealing part 1 at intervals, and each second sealing part 2 is configured as: when the first seal portion 1 is disposed between the upper cover plate 5 and the lower cover plate 6 and located in the seal groove 70, the second seal portion 2 is compressed and deformed, and forms a seal gap 20 with the first seal portion 1 and the seal groove 70; the third sealing portion 3 is sheet-shaped, and one side of the third sealing portion 3 is connected to the outer surface of the first sealing portion 1, and the third sealing portion 3 is disposed on the first sealing step surface 60 and attached along the surface contour of the first sealing step surface 60, so as to assist the first sealing portion 1 and the second sealing portion 2 to jointly seal the connection gap 61.
Further, the third sealing portion 3 comprises a first sealing section 30 and a second sealing section 31, the first sealing section 30 is sheet-shaped, one side of the first sealing section 30 is connected with the outer surface of the first sealing portion 1, and the first sealing section 30 is arranged on the first sealing step surface 60 and is attached along the surface contour of the first sealing step surface 60; the second sealing section 31 is provided at a side of the first sealing section 30 remote from the first sealing portion 1, the second sealing section 31 comprising a pressure increasing feature 32, the pressure increasing feature 32 being for sealing at an opening of the connection gap 61.
Further, the second sealing section 31 further comprises a connecting section 33, one side of the connecting section 33 is connected with one side of the first sealing section 30 far away from the first sealing part 1, and the other side is connected with the pressure increasing feature part 32, so as to form a U-shaped sealing end together with the pressure increasing feature part 32, and ensure the sealing performance of the openings of the upper cover plate 5 and the lower cover plate 6.
Further, the side of the connecting segment 33 connected to the first sealing portion 1 extends in a direction away from the pressure increasing feature 32 to form a fourth sealing portion 4, and the fourth sealing portion 4 is sheet-shaped and is attached along the surface contour of the first sealing step surface 60 and the second sealing step surface 62. The arrangement of the third sealing part 3 and the fourth sealing part 4 ensures the sealing performance of two sides of the first sealing part 1, improves the sealing performance of the whole sealing structure, and can ensure the sealing performance and the protection effect of the sealing structure in a special environment with ultrahigh heat flow and ultrahigh speed.
Specifically, the upper cover plate 5 and the lower cover plate 6 are both mainly formed by bonding glass fiber reinforced plastics with ablation resistance and heat insulation and an aluminum alloy shell with strong bearing capacity through resin, the glass fiber reinforced plastics are arranged at the positions where the first sealing grooves 70 are arranged, the aluminum alloy shell is arranged at the positions where the second sealing grooves 71 are arranged, the first sealing part 1 is mainly formed by glass fiber with ablation resistance and good heat insulation in consideration of a special use environment, and the auxiliary sealing element 8 is made of rubber materials. In order to ensure the smoothness of the surface, the opening of the connecting gap of the sealing structure is coated with silicon rubber, and the surfaces of the third sealing part 3 and the fourth sealing part 4 are also coated with a layer of silicon rubber.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A contour seal, characterized in that it comprises:
a first seal part (1) having a long strip shape;
at least two second seals (2), all of the second seals (2) being spaced apart along an outer surface of the first seal (1), and each of the second seals (2) being configured to: when the first sealing part (1) is arranged in a surface gap of a workpiece, the second sealing part (2) is compressed and deformed, and a sealing gap (20) is formed between the first sealing part (1) and the workpiece;
and the third sealing part (3) is sheet-shaped, one side of the third sealing part is connected with the outer surface of the first sealing part (1), and the third sealing part (3) can be bent and deformed under the action of external force to assist the first sealing part (1) and the second sealing part (2) to be jointly used for sealing a surface gap of the workpiece.
2. A profile seal according to claim 1, wherein the third sealing portion (3) comprises:
the first sealing section (30) is sheet-shaped, one side of the first sealing section is connected with the outer surface of the first sealing part (1), and the first sealing section (30) can be bent and deformed under the action of external force;
a second sealing section (31) provided on a side of the first sealing section (30) remote from the first sealing portion (1), the second sealing section (31) comprising a pressure increasing feature (32), the pressure increasing feature (32) being for sealing at an opening of a surface gap of the workpiece.
3. A contour seal as defined in claim 2, wherein: the second sealing section (31) further comprises a connecting section (33), one side of the connecting section (33) is connected with one side of the first sealing section (30) far away from the first sealing part (1), and the other side of the connecting section is connected with the pressure increasing characteristic part (32) to form a U-shaped sealing end together with the pressure increasing characteristic part (32).
4. A contour seal as defined in claim 3, wherein: the pressure increasing characteristic part (32) is arranged on one side, close to the first sealing part (1), of the connecting section (33) and is connected with the connecting section (33) in an integrated forming mode.
5. A contour seal as defined in claim 3, wherein: one side that linkage segment (33) and first sealing (1) link to each other is along keeping away from pressure increases the direction of characteristic portion (32) and extends and form fourth sealing (4), fourth sealing (4) are the slice, and can buckle deformation under the effect of external force.
6. A contour seal as defined in claim 1, wherein: the number of the second sealing parts (2) is 2, the second sealing parts are symmetrically distributed along the first sealing part (1), the surface profiles of the second sealing parts (2) are arc-shaped, the first sealing part (1) is cylindrical, and the diameter size of the first sealing part (1) is at least three times that of the second sealing part (2).
7. A sealing structure, characterized in that it comprises:
an upper cover plate (5);
a lower cover plate (6), one end of which is provided with a first sealing step surface (60) and a second sealing step surface (62) from top to bottom, wherein the first sealing step surface (60) and the second sealing step surface (62) are fitted with the corresponding ends of the upper cover plate (5), a connecting gap (61) is arranged between the first sealing step surface (60) and the upper cover plate (5), a first sealing groove (70) is arranged on the first sealing step surface (60), a second sealing groove (71) is arranged on the second sealing step surface (62), and an auxiliary sealing element (8) is arranged in the second sealing groove (71);
a profile seal, comprising:
-a first sealing portion (1) having an elongated shape and being arranged in said first sealing groove (70);
-at least two second seals (2), all of said second seals (2) being spaced apart along an outer surface of said first seal (1), and each of said second seals (2) being configured to: when the first sealing part (1) is arranged between the upper cover plate (5) and the lower cover plate (6) and is positioned in the sealing groove (70), the second sealing part (2) is compressed and deformed, and a sealing gap (20) is formed between the second sealing part and the first sealing part (1) and the sealing groove (70);
-a third sealing portion (3) in the shape of a sheet and having one side connected to the outer surface of the first sealing portion (1), wherein the third sealing portion (3) is disposed on the first sealing step surface (60) and attached along the surface contour of the first sealing step surface (60) to assist the first sealing portion (1) and the second sealing portion (2) to jointly seal the connection gap (61).
8. A sealing arrangement according to claim 7, characterised in that the third sealing portion (3) comprises:
the first sealing section (30) is sheet-shaped, one side of the first sealing section is connected with the outer surface of the first sealing part (1), and the first sealing section (30) is arranged on the first sealing step surface (60) and is attached along the surface contour of the first sealing step surface (60);
a second sealing section (31) provided at a side of the first sealing section (30) remote from the first sealing portion (1), the second sealing section (31) comprising a pressure increasing feature (32), the pressure increasing feature (32) being for sealing at an opening of the connection gap (61).
9. A sealing structure according to claim 8, wherein: the second sealing section (31) further comprises a connecting section (33), one side of the connecting section (33) is connected with one side of the first sealing section (30) far away from the first sealing part (1), and the other side of the connecting section is connected with the pressure increasing characteristic part (32) to form a U-shaped sealing end together with the pressure increasing characteristic part (32).
10. A sealing structure according to claim 9, wherein: one side that linkage segment (33) and first sealing (1) link to each other is along keeping away from the direction of pressure increase characteristic portion (32) extends and forms fourth sealing (4), fourth sealing (4) are the slice, and follow the surface profile subsides of first sealed step face (60) and second sealed step face (62) are established.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110151714.2A CN112901777B (en) | 2021-02-03 | 2021-02-03 | Special-shaped sealing element and sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110151714.2A CN112901777B (en) | 2021-02-03 | 2021-02-03 | Special-shaped sealing element and sealing structure |
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| Publication Number | Publication Date |
|---|---|
| CN112901777A true CN112901777A (en) | 2021-06-04 |
| CN112901777B CN112901777B (en) | 2023-03-28 |
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| CN202110151714.2A Active CN112901777B (en) | 2021-02-03 | 2021-02-03 | Special-shaped sealing element and sealing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114126308A (en) * | 2021-12-03 | 2022-03-01 | 成都航天通信设备有限责任公司 | Sealing structure of modular communication radio station |
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Cited By (2)
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| CN114126308A (en) * | 2021-12-03 | 2022-03-01 | 成都航天通信设备有限责任公司 | Sealing structure of modular communication radio station |
| CN114126308B (en) * | 2021-12-03 | 2023-07-25 | 成都航天通信设备有限责任公司 | Sealing structure of modularized communication radio station |
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| Publication number | Publication date |
|---|---|
| CN112901777B (en) | 2023-03-28 |
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