V-shaped spring energy storage sealing ring

Abstract

The utility model relates to a V-shaped spring energy storage sealing ring which comprises a spring body and a clamping sleeve, the whole spring body is a circular ring body, and the section of the spring body is of a fillet V-shaped structure. The spring body comprises a bottom, a first wing portion and a second wing portion, the first wing portion and the second wing portion are located on the two sides of the bottom, and long open grooves are formed in the first wing portion and the second wing portion at intervals and are perpendicular to the extending direction of the spring body. The whole clamping sleeve is a circular ring body, an open inner cavity for containing the spring body is formed in the clamping sleeve, and spring body limiting clamping tables are arranged on the edges of the two sides of the upper portion of the open inner cavity. According to the V-shaped spring energy storage sealing ring, the fillet V-shaped structure with the opening long groove is adopted, so that the elasticity and the deformability of the spring body are improved, more uniform sealing load is realized, friction force and abrasion are reduced, and the service life of the sealing ring is prolonged; meanwhile, the spring body is in S-shaped circulation in the extending direction due to the arrangement of the open long groove, the weight of the whole sealing ring can be reduced, and the response speed of the sealing ring is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of rubber sealing element design, and specifically relates to a V-shaped spring energy storage sealing ring and a preparation method thereof. Background Art

[0002] Spring energized seals are sealing devices that use springs to provide elastic force. They are widely used in various high temperature, high pressure, high speed, high corrosion and high reliability applications, such as aerospace, oil and gas, automotive, electronics, industry and life sciences.

[0003] The working principle of the spring-energized seal is as follows: when the spring-energized seal is installed in the sealing groove, the spring is compressed, forming an outward tension, which forces the jacket lip to fit tightly against the sealing groove, thereby forming a seal. The spring provides permanent elastic force to the sealing jacket and compensates for material wear and offset or eccentricity of mating parts. System pressure also assists in energy storage of the sealing jacket. Through the spring force assisted by system pressure, effective sealing can be achieved regardless of high or low pressure.

[0004] The V-shaped spring energy storage seal is a common spring energy storage seal. Its characteristics are that the cross-section of the spring body is a rounded "V"-shaped structure, and the jacket is provided with a "V"-shaped inner cavity. The two are interlocked to form an integral annular body.

[0005] However, the existing V-type spring energy storage seal ring still has some shortcomings, mainly manifested in: the existing spring body is a steel belt structure, which is made of rectangular steel strips connected in a ring. Its structure is relatively rigid, the spring body is subjected to greater force in the bending direction, and the end connection is prone to breakage or loosening, affecting the integrity and stability of the seal ring. At the same time, the spring body of the steel belt structure has poor deformation ability at the installation position and cannot adapt well to the axial or radial movement of the mating parts, resulting in uneven load distribution of the sealing lip, increasing friction and wear, and reducing the service life of the seal ring.

[0006] In addition, the manufacturing process of the spring body is complicated, which is not only time-consuming and labor-intensive, but also easily causes material loss and deformation, affecting the dimensional accuracy and sealing performance of the sealing ring.

[0007] Therefore, in view of the shortcomings of the structure and preparation method of the existing V-type spring energy storage sealing ring, it is necessary to provide an improved V-type spring energy storage sealing ring and its preparation method to improve the strength and elasticity of the spring, simplify the preparation process, improve production efficiency and reduce costs, and improve the sealing effect and service life. Summary of the invention

[0008] The utility model provides a V-shaped spring energy storage sealing ring and a preparation method thereof, aiming to solve the problems in the prior art.

[0009] In order to achieve the above object, the technical solution of the utility model is as follows:

[0010] A V-shaped spring energy storage seal ring, comprising a spring body and a jacket, wherein the spring body is a circular ring as a whole, and its cross section is a rounded "V"-shaped structure; the spring body comprises a bottom and a first wing and a second wing located on both sides of the bottom, and an open long groove is spaced apart on the first wing and the second wing, and the open long groove is perpendicular to the extension direction of the spring body;

[0011] The jacket is a circular ring as a whole, and an open inner cavity for accommodating the spring body is arranged inside the jacket, and spring body limiting clamping platforms are arranged on both side edges of the upper part of the open inner cavity.

[0012] Furthermore, the open long slot formed on the first wing portion or the second wing portion extends to the opposite wing portion.

[0013] Furthermore, the spring body is welded into a ring after being overlapped by connecting heads at both ends.

[0014] Furthermore, the length of each of the open long grooves is 3 / 5-2 / 3 of the width of the steel strip.

[0015] Furthermore, the open long groove is perpendicular to the extension direction of the steel strip.

[0016] Furthermore, the jacket is made of polytetrafluoroethylene material.

[0017] Furthermore, the spring body is made of metal.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] The V-shaped spring energy storage seal ring of the utility model adopts a rounded "V"-shaped structure with an open long groove, which improves the elasticity and deformation capacity of the spring body, realizes a more uniform sealing load, reduces friction and wear, and increases the service life of the seal ring. At the same time, the setting of the open long groove makes the spring body present an S-shaped cycle in the extension direction, which can reduce the weight of the entire seal ring and improve the response speed of the seal ring; at the same time, the setting of the open long groove also increases the radial deformation capacity of the spring body, so that the spring body can better adapt to the radial movement of the matching parts, ensure the good contact between the sealing lip and the matching parts, and improve the sealing effect of the seal ring.

[0020] Of course, implementing the various technical solutions of the present invention does not necessarily require achieving all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of a V-shaped spring energy storage seal ring according to an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall structure of the spring body of the utility model embodiment;

[0024] Figure 3 This is a schematic diagram of a spring body connector of an embodiment of the utility model;

[0025] Figure 4 This is a partial schematic diagram of the unfolded spring body of the embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the end face of the spring body of the utility model embodiment;

[0027] In the figure, 1-jacket, 2-spring body, 3-bottom, 4-first wing, 5-second wing, 6-open long groove, 7-connector. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0029] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0030] Embodiment 1:

[0031] In this embodiment, a V-shaped spring energy storage seal ring is provided.

[0032] See also Figure 1 The V-shaped spring energy storage seal ring in this embodiment is composed of two parts: one is a jacket 1 made of special polytetrafluoroethylene (PTFE) material, and the other is a spring body 2 embedded in the jacket 1.

[0033] Jacket 1: The jacket 1 is a closed-loop structure with good elasticity and chemical resistance. Its cross section is V-shaped, and an open cavity is formed inside to fit tightly with the spring body 2. The design of the jacket 1 allows it to deform when under pressure to maintain uniform pressure on the spring and achieve effective sealing.

[0034] Spring body 2: See Figure 2 and Figure 3 The spring body 2 is made of metal material, and the whole body is a circular ring, and its cross section is a rounded "V" shaped structure; the spring body 2 includes a bottom 3 and a first wing 4 and a second wing 5 located on both sides of the bottom 3, and an open long groove 6 is provided on the first wing 4 and the second wing 5, and the open long groove 6 is perpendicular to the extension direction of the spring body 2; the length of the open long groove 6 is 3 / 5-2 / 3 of the width of the spring body 2, so that the spring body 2 presents an S-shaped cycle in the extension direction, which increases the elasticity and deformation capacity of the spring body 2; the two ends of the spring body 2 are welded after being overlapped by a connector 7 to form a circular ring spring body 2. The design of the spring body 2 enables it to better adapt to the offset or eccentricity of the mating parts, achieve a more uniform sealing load, reduce friction and wear, and increase the service life of the sealing ring. At the same time, the setting of the open long groove 6 also increases the flexibility of the spring body 2, which can be adjusted according to different working conditions, and expands the scope of application of the sealing ring.

[0035] See also Figure 4 , Figure 4 It is a schematic diagram (partial) of the unfolded spring body 2 in the unhooked state. It can be seen from the figure that the unfolded spring body 2 is a rectangular sheet, and open long grooves 6 are arranged at intervals on its body, and the openings of adjacent open long grooves 6 are respectively located on the upper side and the lower side.

[0036] See also Figure 5 , Figure 5 It is a schematic diagram of the side end of the spring body 2 before being bent and formed into a ring. In the figure, connectors 7 at both ends of the spring body 2 can be seen. The connectors 7 are provided with welding holes for welding into a ring.

[0037] The spring body 2 is embedded in the open inner cavity of the jacket 1 so that the bottom 3 of the spring body 2 fits tightly with the bottom of the jacket 1, the first wing 4 and the second wing 5 correspond to the upper part of the jacket 1, and the two side edges of the upper part of the jacket 1 are provided with limit clamps of the spring body 2 to limit the position of the spring body 2 and prevent it from sliding or falling off during operation.

[0038] Thus, the V-shaped spring energy storage seal ring of this embodiment is formed.

[0039] The preparation method of the V-shaped spring energy storage seal ring of this embodiment is as follows:

[0040] S1. Punch out the metal steel strip according to the design size of the spring body and reserve connectors at both ends of the steel strip;

[0041] S2. Along the length direction of the steel strip, a number of open long grooves are punched out at intervals on both sides of the steel strip, and the closed side of the open long grooves crosses the center line of the steel strip;

[0042] S3, stamping the steel strip according to the designed angle to make it present a rounded "V" shape structure;

[0043] S4, cleaning the stamped steel strip to remove oil, dust and burrs on the surface of the steel strip;

[0044] S5. Tempering the cleaned steel strip to improve the elasticity and strength of the steel strip;

[0045] S6. The tempered steel strip is bent, and the two ends of the steel strip are overlapped and welded through a connector to form a spring body of a circular ring.

[0046] The V-shaped spring coil constructed in this embodiment is finally optimized, and the V-shaped spring coil includes inner diameter d, wire diameter (opening width) S, thickness t, bending radius R and spring height H;

[0047] Table 1 below is a table of V-shaped spring structure parameters constructed in this embodiment:

[0048] Table 1 Structural parameters of V-type spring

[0049]

[0050] According to the design size of the jacket 1, a special polytetrafluoroethylene (PTFE) material is injection molded to form a jacket 1 with a closed loop structure. The jacket 1 has a V-shaped cross section and an open inner cavity is formed inside. The upper two side edges of the open inner cavity are provided with limit clips of the spring body 2.

[0051] The spring body 2 is embedded in the open inner cavity of the jacket 1 so that the bottom 3 of the spring body 2 fits tightly with the bottom 8 of the jacket 1, and the first wing 4 and the second wing 5 correspond to the upper part of the jacket 1, thereby completing the preparation of the V-shaped spring energy storage seal ring of this embodiment.

[0052] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A V-shaped spring energy storage seal ring, characterized in that: It includes a spring body and a jacket, wherein the spring body is a circular ring body as a whole, and its cross section is a rounded "V"-shaped structure; the spring body includes a bottom and a first wing and a second wing located on both sides of the bottom, and an open long groove is spaced apart on the first wing and the second wing, and the open long groove is perpendicular to the extension direction of the spring body; The jacket is a circular ring as a whole, and an open inner cavity for accommodating the spring body is arranged inside the jacket, and spring body limiting clamping platforms are arranged on both side edges of the upper part of the open inner cavity.

2. The V-shaped spring energy storage seal ring according to claim 1, characterized in that: The open long slot formed on the first wing portion or the second wing portion extends to the opposite wing portion.

3. The V-shaped spring energy storage seal ring according to claim 1, characterized in that: The spring body is welded into a ring after being overlapped by connecting heads at both ends.

4. The V-shaped spring energy storage seal ring according to claim 3 is characterized in that: The length of each of the open long grooves is 3 / 5-2 / 3 of the width of the steel strip.

5. The V-shaped spring energy storage seal ring according to claim 3, characterized in that: The open long groove is perpendicular to the extending direction of the steel strip.

6. The V-shaped spring energy storage seal ring according to claim 5, characterized in that: The jacket is made of polytetrafluoroethylene material.

7. The V-shaped spring energy storage seal ring according to claim 6, characterized in that: The spring body is made of metal material.

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