Spring-reinforced metal seal structure resistant to ultra-high pressure

Abstract

The utility model discloses a kind of spring reinforced metal sealing structures of superhigh pressure resistance, including mutually matched lower flange and upper flange, the fixed bolt nut structure for fixing lower flange and upper flange, and the sealing portion being arranged between lower flange and upper flange;The sealing portion is composed of C type sealing ring and spring ring arranged in C type sealing ring, wedge portion is provided on the C type sealing ring, and wedge-shaped groove is provided on the lower flange and / or upper flange and matched with wedge portion.This application provides a kind of spring reinforced metal sealing structures of superhigh pressure resistance, on the basis of existing C type sealing ring and spring ring matched sealing structure, under the premise of not changing material, by simple adjustment to structure, the stress capacity of sealing structure is further improved, and the development and progress of industry are well promoted.

Description

Technical Field

[0001] This application relates to the field of sealing structures, and more specifically to a spring-reinforced metal sealing structure resistant to ultra-high pressure. Background Technology

[0002] To improve the sealing effect after flange connection, sealing rings are usually installed between the two flanges, with their upper and lower sides contacting each other. The clamping force of the flanges compresses the sealing rings, thus achieving a seal. However, when the pressure is too high, the sealing rings, due to their inherent characteristics, can expand and deform, and may even break due to the pressure, thereby reducing the sealing effect. Figure 1 , Figure 2 As shown, to further improve the sealing effect, C-shaped sealing rings with metal structures are often selected in this field, and a metal spring ring is placed inside the cavity of the C-shaped sealing ring. The elasticity of the spring ring increases the stress-bearing capacity of the C-shaped sealing ring, thereby improving the stress-bearing capacity of the sealing structure. How to further improve the stress-bearing capacity of the sealing structure on this basis, so that the sealing structure can withstand higher pressure, is an important research direction in this field. Utility Model Content

[0003] To address the shortcomings of existing technologies, this application provides a spring-reinforced metal sealing structure that can withstand ultra-high pressure. Based on the existing sealing structure that combines a C-type sealing ring with a spring ring, and without changing the materials, the structural stress capacity of the sealing structure is further improved through simple adjustments, which greatly promotes the development and progress of the industry.

[0004] A spring-reinforced metal sealing structure resistant to ultra-high pressure includes a lower flange and an upper flange that cooperate with each other, a fixing bolt and nut structure for fixing the lower flange and the upper flange, and a sealing part disposed between the lower flange and the upper flange; the sealing part consists of a C-shaped sealing ring and a spring ring disposed within the C-shaped sealing ring, the C-shaped sealing ring being provided with a wedge-shaped portion, and the lower flange and / or the upper flange being provided with a wedge-shaped groove that cooperates with the wedge-shaped portion.

[0005] Furthermore, the C-type sealing ring consists of a sealing ring body and a wedge-shaped portion disposed on the outer side wall of the sealing ring body.

[0006] Preferably, the wedge-shaped portion is an upper wedge-shaped portion disposed on the top of the sealing ring body and / or a lower wedge-shaped portion disposed on the bottom of the sealing ring body.

[0007] Furthermore, the lower flange consists of a lower flange body and a groove for providing a sealing portion;

[0008] The upper flange consists of an upper flange body and a mating groove that mates with the groove;

[0009] The wedge groove is a lower wedge groove provided in the groove and / or an upper wedge groove provided in the mating groove;

[0010] The lower wedge groove mates with the lower wedge portion, and the upper wedge groove mates with the upper wedge portion.

[0011] Furthermore, both the upper wedge-shaped portion and the lower wedge-shaped portion are circular rings disposed on the outer side of the sealing ring body.

[0012] As a first preferred embodiment, the upper wedge portion and the lower wedge portion have wedge-shaped cross-sections.

[0013] As a second preferred embodiment, the upper wedge portion and the lower wedge portion are formed by arranging a number of wedge-shaped truncated cones at the same intervals in a circular ring.

[0014] As a third preferred embodiment, the wedge-shaped portion and the lower wedge-shaped portion are formed by arranging several wedge-shaped arc truncated cones at the same intervals in a circular ring.

[0015] Furthermore, both the upper wedge-shaped portion and the lower wedge-shaped portion are two concentric rings disposed on the outer side of the sealing ring body.

[0016] In addition, the upper wedge groove and the lower wedge groove are annular grooves, frustum-shaped grooves or arc-shaped grooves that cooperate with the upper wedge part and the lower wedge part.

[0017] Compared with the prior art, the embodiments of this application have the following beneficial effects:

[0018] Based on the existing sealing structure of C-type sealing ring and spring ring, this utility model further improves the stress-bearing capacity of the sealing structure by making simple adjustments to the structure without changing the materials, which greatly promotes the development and progress of the industry.

[0019] Some of the additional features of this application will be described in the following description. These additional features will become apparent to those skilled in the art upon examination of the following description and the accompanying drawings, or upon understanding the production or operation of the embodiments. The features disclosed in this application can be implemented and achieved through the practice or use of various methods, means, and combinations thereof with respect to the specific embodiments described below. Attached Figure Description

[0020] The accompanying drawings, which are provided to further illustrate this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute a limitation thereof. In the drawings, the same reference numerals denote the same components.

[0021] Figure 1 This is a cross-sectional schematic diagram of a metal sealing structure in the prior art.

[0022] Figure 2 This is a top or bottom view of the sealing part in the prior art.

[0023] Figure 3 This is a schematic diagram of the single-ring structure of this utility model.

[0024] Figure 4 This is a schematic diagram of the single-loop structure of this utility model.

[0025] Figure 5 This is a schematic diagram of the upper and lower single-ring structure of this utility model.

[0026] Figure 6 This is a top view or bottom view of the single-ring structure of this utility model.

[0027] Figure 7 This is a top view or a bottom view of the single-ring frustum structure of this utility model.

[0028] Figure 8 This is a top view or a bottom view of the single-circle arc-shaped platform structure of this utility model.

[0029] Figure 9 This is a schematic diagram of the double-ring structure of this utility model.

[0030] Figure 10 This is a schematic diagram of the double-ring structure of this utility model.

[0031] Figure 11 This is a schematic diagram of the upper and lower double-ring structure of this utility model.

[0032] Figure 12 This is a top view or a bottom view of the double-ring structure of this utility model.

[0033] Figure 13 This is a top view or a bottom view of the double-ring frustum structure of this utility model.

[0034] Figure 14 This is a top view or a bottom view of the double-ring arc-shaped platform structure of this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Sealing part;

[0037] 110. C-type sealing ring; 111. Sealing ring body; 112. Upper wedge-shaped part; 113. Lower wedge-shaped part; 120. Spring ring;

[0038] 200. Lower flange; 201. Lower flange body; 202. Groove; 203. Lower wedge groove;

[0039] 300. Upper flange; 301. Upper flange body; 302. Mating groove; 303. Upper wedge groove;

[0040] 400. Fixed bolt and nut structure. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0042] It should be noted that if the terms "first," "second," etc., are used in the specification, claims, and accompanying drawings of this application, they are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] In this application, when terms such as "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "left and right lateral," and "longitudinal" are used, they indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0044] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0045] Furthermore, in this application, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] Example 1

[0048] like Figure 3 As shown, a spring-reinforced metal sealing structure resistant to ultra-high pressure includes a lower flange 200 and an upper flange 300 that cooperate with each other, a fixing bolt and nut structure 400 for fixing the lower flange 200 and the upper flange 300, and a sealing part 100 disposed between the lower flange 200 and the upper flange 300; the sealing part 100 is composed of a C-shaped sealing ring 110 and a spring ring 120 disposed within the C-shaped sealing ring 110, the C-shaped sealing ring 110 is provided with a wedge-shaped part, and the upper flange 300 is provided with a wedge-shaped groove that cooperates with the wedge-shaped part.

[0049] The C-type sealing ring 110 consists of a sealing ring body 111 and a wedge-shaped portion disposed on the outer side wall of the sealing ring body 111.

[0050] The wedge-shaped portion is the upper wedge-shaped portion 112 disposed on the top of the sealing ring body 111.

[0051] The lower flange 200 consists of a lower flange body 201 and a groove 202 for providing the sealing part 100;

[0052] The upper flange 200 consists of an upper flange body 301 and a mating groove 302 that mates with the groove 202;

[0053] The wedge groove is a lower wedge groove 203 provided in the groove 202 and / or an upper wedge groove 303 provided in the mating groove 302.

[0054] The upper wedge groove 303 cooperates with the upper wedge portion 112.

[0055] The upper wedge-shaped portion 112 is a ring disposed on the outer side of the sealing ring body 111.

[0056] Since the upper wedge can extend into the upper wedge groove during use, the upper flange can provide an inward reaction force when the sealing part is subjected to an outward force. Compared with the existing static friction force, the upper limit of this reaction force is higher, thus improving the product's stress resistance.

[0057] Example 2

[0058] like Figure 4 As shown, the only difference between this embodiment and embodiment 1 is that the lower flange 200 is provided with a wedge-shaped groove that mates with the wedge-shaped part.

[0059] The wedge-shaped portion is a lower wedge-shaped portion 113 located at the bottom of the sealing ring body 111.

[0060] The lower wedge groove 203 cooperates with the lower wedge portion 113.

[0061] The lower wedge-shaped portion 113 is a ring disposed on the outer side of the sealing ring body 111.

[0062] Because the lower wedge can extend into the lower wedge groove during use, the lower flange can provide an inward reaction force when the sealing part is subjected to an outward force. Compared with the existing static friction force, the upper limit of this reaction force is higher, thus improving the product's stress resistance.

[0063] Example 3

[0064] like Figure 5 As shown, the only difference between this embodiment and embodiment 1 is that both the lower flange 200 and the upper flange 300 are provided with wedge-shaped grooves that cooperate with the wedge-shaped part.

[0065] The wedge-shaped portion consists of an upper wedge-shaped portion 112 located at the top of the sealing ring body 111 and a lower wedge-shaped portion 113 located at the bottom of the sealing ring body 111.

[0066] The lower wedge groove 203 cooperates with the lower wedge portion 113, and the upper wedge groove 303 cooperates with the upper wedge portion 112.

[0067] Both the upper wedge-shaped portion 112 and the lower wedge-shaped portion 113 are circular rings disposed on the outer side of the sealing ring body 111.

[0068] Example 4

[0069] like Figure 6 As shown, the difference between this embodiment and embodiments 1-3 is that the cross-sections of the upper wedge portion 112 and the lower wedge portion 113 are wedge-shaped.

[0070] Example 5

[0071] like Figure 7As shown, the difference between this embodiment and embodiment 4 is that the upper wedge portion 112 and the lower wedge portion 113 are formed by arranging a number of wedge-shaped truncated cones at the same interval into a ring.

[0072] Example 6

[0073] like Figure 8 As shown, the difference between this embodiment and embodiment 4 is that the wedge-shaped portion 112 and the lower wedge-shaped portion 113 are arranged in a ring by a number of arc-shaped truncated sections with the same spacing.

[0074] Example 7

[0075] like Figures 9-11 As shown, the difference between this embodiment and embodiments 4-6 is that the upper wedge portion 112 and the lower wedge portion 113 are both two concentric rings disposed on the outer side of the sealing ring body 111.

[0076] Compared to a single-ring design, two concentric rings can further increase the product's maximum stress capacity.

[0077] Example 8

[0078] like Figures 12-14 As shown, the difference between this embodiment and embodiment 7 is that the upper wedge groove 303 and the lower wedge groove 203 are annular grooves, frustum-shaped grooves or arc-shaped grooves that cooperate with the upper wedge part 112 and the lower wedge part 113.

[0079] The depth of the annular groove, frustum-shaped groove, or arc-shaped groove needs to be slightly greater than the height of the upper and lower wedges to avoid the reaction force generated after the internal air is compressed, which would prevent the upper and lower wedges from fully entering the upper and lower wedge grooves.

[0080] It should be noted that all features disclosed in this specification, or all steps in all methods or processes disclosed, may be combined in any way, except for mutually exclusive features and / or steps.

[0081] Furthermore, the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this utility model is defined by the claims and their equivalents.

Claims

1. A high-pressure resistant spring-reinforced metal sealing structure, comprising a lower flange (200) and an upper flange (300) that cooperate with each other, a fixing bolt and nut structure (400) for fixing the lower flange (200) and the upper flange (300), and a sealing part (100) disposed between the lower flange (200) and the upper flange (300); the sealing part (100) is composed of a C-type sealing ring (110) and a spring ring (120) disposed within the C-type sealing ring (110), characterized in that, The C-type sealing ring (110) is provided with a wedge-shaped part, and the lower flange (200) and / or the upper flange (300) are provided with a wedge-shaped groove that mates with the wedge-shaped part.

2. The ultra-high pressure resistant spring-reinforced metal sealing structure according to claim 1, characterized in that, The C-type sealing ring (110) consists of a sealing ring body (111) and a wedge-shaped portion disposed on the outer side wall of the sealing ring body (111).

3. The ultra-high pressure resistant spring-reinforced metal sealing structure according to claim 2, characterized in that, The wedge-shaped portion is an upper wedge-shaped portion (112) disposed on the top of the sealing ring body (111) and / or a lower wedge-shaped portion (113) disposed on the bottom of the sealing ring body (111).

4. The ultra-high pressure resistant spring-reinforced metal sealing structure according to claim 2, characterized in that, The lower flange (200) consists of a lower flange body (201) and a groove (202) for providing a sealing part (100); The upper flange (200) consists of an upper flange body (301) and a mating groove (302) that mates with the groove (202); The wedge groove is a lower wedge groove (203) provided in the groove (202) and / or an upper wedge groove (303) provided in the mating groove (302); The lower wedge groove (203) cooperates with the lower wedge portion (113), and the upper wedge groove (303) cooperates with the upper wedge portion (112).

5. The ultra-high pressure resistant spring-reinforced metal sealing structure according to claim 4, characterized in that, Both the upper wedge-shaped portion (112) and the lower wedge-shaped portion (113) are circular rings disposed on the outer side of the sealing ring body (111).

6. The ultra-high pressure resistant spring-reinforced metal sealing structure according to claim 5, characterized in that, The upper wedge-shaped portion (112) and the lower wedge-shaped portion (113) have wedge-shaped cross sections.

7. The ultra-high pressure resistant spring-reinforced metal sealing structure according to claim 5, characterized in that, The upper wedge-shaped portion (112) and the lower wedge-shaped portion (113) are formed by a number of wedge-shaped truncated cones arranged in a ring at the same interval.

8. The ultra-high pressure resistant spring-reinforced metal sealing structure according to claim 5, characterized in that, The wedge-shaped portion (112) and the lower wedge-shaped portion (113) are formed by a number of wedge-shaped arc truncated sections arranged in a ring at the same interval.

9. A spring-reinforced metal sealing structure resistant to ultra-high pressure according to any one of claims 6, 7, or 8, characterized in that, The upper wedge-shaped portion (112) and the lower wedge-shaped portion (113) are both two concentric rings disposed on the outer side of the sealing ring body (111).

10. A spring-reinforced metal sealing structure resistant to ultra-high pressure according to claim 9, characterized in that, The upper wedge groove (303) and the lower wedge groove (203) are annular grooves, frustum-shaped grooves or arc-shaped grooves that cooperate with the upper wedge part (112) and the lower wedge part (113).

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