Compensation type sealing assembly

Abstract

The invention discloses a compensation type sealing assembly, which relates to the technical field of sealing assembly equipment and comprises a moving ring assembly, a static ring assembly, a spring, a moving ring, an annular boss, a static ring and an annular groove. The dynamic ring assembly and the static ring assembly are matched to achieve compensation type sealing treatment, when the static ring is affected by high temperature and generates thermal displacement, the dynamic ring and the static ring are tightly jacked and sealed again under elastic supporting of the spring, and the compensation sealing treatment effect can be effectively improved; the annular boss at the end part of the moving ring is inserted into the inner side of the annular groove at the inner side of the end part of the static ring, so that the static ring can be effectively subjected to internal expansion type connection sealing treatment, and the sealing connection effect between the moving ring and the static ring can be effectively improved; the inner expansion type jacking expansion change of the annular boss and the annular groove can be achieved, overall expansion and contraction adjustment can be conducted on the static ring, overall expansion and contraction of the static ring in the high-temperature working environment can be effectively compensated, and the sealing performance can be effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of sealing component equipment technology, specifically a compensating sealing component. Background Technology

[0002] A sealing assembly is a mechanical component used to prevent fluid or gas leakage, mainly divided into static seals and dynamic seals. Static seals include sealing covers and gaskets. Dynamic seals include shaft seals and sealing rings. In air preheater equipment, because it needs to exchange heat between boiler flue gas and external air, sealing treatment is required at pipe connections or shaft seals. Due to the special working environment of the air preheater, sealing components will experience thermal displacement. Therefore, sealing components with compensation functions are needed in the air preheater to compensate for the thermal displacement of the sealing components.

[0003] Current compensating seals mainly include flexible compensation and elastic dynamic compensation. Flexible compensation seals use bellows to compensate for thermal displacement; however, these bellows need to withstand operating temperatures of 400-600℃ in air preheaters, requiring high-quality materials. Elastic dynamic compensation seal assemblies compensate for friction between the rotating and stationary rings through elastic components, primarily relying on contact sealing between the two rings. However, this planar contact and pressing sealing method has poor sealing performance.

[0004] For example, the aforementioned problem exists in patent (CN217951232U); it describes "a stationary ring compensation type cartridge mechanical seal assembly, specifically relating to the field of mechanical seal assemblies, including a gland, a stationary ring body installed inside the gland, a second spring installed on one side of the stationary ring body, one end of the second spring connected to the gland, an annular groove formed on the other side of the stationary ring body, a limit component installed inside the annular groove, a circular ring installed inside the annular groove, a rotating ring body connected to one side of the circular ring, a push ring inserted into one side of the rotating ring body, and a push ring connected to one side of the push ring." A first spring is connected to the first spring, and a spring seat is connected to the other end of the first spring. This invention has the advantages of reducing friction between the stationary and rotating rings, increasing service life, and allowing for replacement of the contact parts between the stationary and rotating rings, thus reducing maintenance and replacement costs. The design primarily relies on the contact seal between the rotating and stationary rings, with adaptive compensation under the elastic force of the spring. Its sealing performance mainly depends on the contact clamping force between the rotating and stationary rings. This compensation method can only compensate for the displacement of the stationary ring, but cannot compensate for the overall expansion and contraction of the stationary ring, resulting in poor sealing performance.

[0005] To address the existing compensating sealing assemblies that rely on elastic components to compensate for the friction between the rotating and stationary rings, primarily through contact sealing between the rotating and stationary rings, we propose a compensating sealing assembly. Summary of the Invention

[0006] The purpose of this invention is to provide a compensating sealing assembly to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a compensating sealing assembly, including a dynamic ring assembly and a stationary ring assembly, wherein the dynamic ring assembly includes a spring, and a dynamic ring is provided on the outer wall of the spring near the end of the stationary ring assembly, and an annular boss is provided on the outer wall of the dynamic ring near the end of the stationary ring assembly; the stationary ring assembly includes a stationary ring, and an annular groove matching the annular boss is formed on the outer wall of the stationary ring near the end of the dynamic ring.

[0008] Furthermore, the outer wall of the stationary ring is provided with a plurality of annular sealing rings, and the inner wall of the annular groove is provided with a plurality of annular sealing plates.

[0009] Furthermore, the annular sealing sheet is inclinedly disposed on the inner wall of the annular groove, and the line connecting two adjacent annular sealing sheets at the end away from the annular groove is parallel to the inner wall of the annular groove.

[0010] Furthermore, the outer walls of two adjacent annular sealing pieces are located on the same plane at one adjacent end.

[0011] Furthermore, it also includes a sliding guide assembly, which includes several mutually matched sliders and guide rails. The sliders are disposed on the outer wall of the moving ring, and the guide rails are perpendicular to the moving ring.

[0012] Furthermore, the annular boss is a frustum-shaped boss structure with a central opening, and the annular groove is a frustum-shaped groove structure with a central opening.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0014] 1. This invention, through the arrangement of a rotating ring assembly, a stationary ring assembly, a spring, a rotating ring, an annular boss, a stationary ring, and an annular groove, achieves a compensatory sealing treatment by cooperating with the rotating ring assembly and the stationary ring assembly. When the stationary ring undergoes thermal displacement due to high temperature, the rotating ring and the stationary ring are re-tightened and sealed under the elastic support of the spring, which can effectively improve the compensatory sealing effect. The annular boss at the end of the rotating ring is inserted into the inner side of the annular groove at the end of the stationary ring, which can effectively perform an internal expansion connection sealing treatment for the stationary ring, and can effectively improve the sealing connection effect between the rotating ring and the stationary ring. As the insertion distance between the annular boss and the annular groove changes, the internal expansion and tightening expansion of the annular boss against the annular groove can be realized, which can adjust the overall expansion and contraction of the stationary ring, effectively compensating for the overall expansion and contraction of the stationary ring in the high-temperature working environment, and effectively ensuring the sealing performance.

[0015] 2. In this invention, multiple annular sealing rings are provided on the outer wall of the stationary ring, and the annular sealing rings perform multiple auxiliary sealing treatments on the outer wall of the stationary ring, which can effectively improve the sealing effect of the stationary ring; multiple annular sealing plates are provided on the inner wall of the annular groove, and the annular sealing plates enhance the sealing effect between the annular boss and the annular groove, which can effectively improve the sealing effect between the annular boss and the annular groove; by designing the tilt angle of the annular sealing plates, the contact fit between the annular sealing plates and the annular boss is better, which can effectively ensure the contact sealing performance between the annular sealing plates and the annular groove and the annular boss. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is an exploded view of the entire invention;

[0019] Figure 3 This is a schematic diagram of the structure of the dynamic ring assembly of the present invention;

[0020] Figure 4 This is a cross-sectional schematic diagram of the stationary ring of the present invention;

[0021] In the diagram: 1. Moving ring assembly; 101. Spring; 102. Moving ring; 103. Annular boss; 104. Guide rail; 105. Slider; 2. Stationary ring assembly; 201. Stationary ring; 202. Annular groove; 203. Annular sealing ring; 204. Annular sealing sheet. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-4 The present invention provides a technical solution: a compensating sealing assembly, comprising a rotating ring assembly 1 and a stationary ring assembly 2. The rotating ring assembly 1 includes a spring 101, and a rotating ring 102 is provided on the outer wall of the spring 101 near the end of the stationary ring assembly 2. An annular boss 103 is provided on the outer wall of the rotating ring 102 near the end of the stationary ring assembly 2. The stationary ring assembly 2 includes a stationary ring 201, and an annular groove 202 matching the annular boss 103 is formed on the outer wall of the stationary ring 201 near the end of the rotating ring 102. The outer wall of the stationary ring 201 is provided with a plurality of annular... The sealing ring 203 has a plurality of annular sealing pieces 204 on the inner wall of the annular groove 202. The annular sealing pieces 204 are inclinedly disposed on the inner wall of the annular groove 202, and the line connecting the ends of two adjacent annular sealing pieces 204 away from the annular groove 202 is parallel to the inner wall of the annular groove 202. The outer walls of two adjacent annular sealing pieces 204 are located on the same plane at adjacent ends. The annular boss 103 is a frustum-shaped boss structure with a central opening, and the annular groove 202 is a frustum-shaped groove structure with a central opening.

[0024] In one embodiment, a sliding guide assembly is further included. The sliding guide assembly includes a plurality of mutually matched sliders 105 and guide rails 104. The sliders 105 are disposed on the outer wall of the moving ring 102, and the guide rails 104 are perpendicular to the moving ring 102. The sliding guide assembly guides the movement of the moving ring 102, which can effectively ensure the stability of the movement of the moving ring 102. When the moving ring 102 performs compensating movement under the support of the spring 101, the sliders 105 move with the moving ring 102. The guide rails 104 guide the sliders 105, which can effectively ensure that the moving ring 102 moves along the guide rails 104, effectively ensure the stability of the moving ring 102 during compensating movement, and effectively prevent the moving ring 102 from deviating during compensating movement adjustment.

[0025] Working principle of the invention:

[0026] Refer to the instruction manual appendix Figures 1-4This invention, through the arrangement of a rotating ring assembly 1, a stationary ring assembly 2, a spring 101, a rotating ring 102, an annular boss 103, a stationary ring 201, and an annular groove 202, installs the rotating ring assembly 1 and the stationary ring assembly 2 at the sealing connection of the equipment. The rotating ring assembly 1 is slidably connected to the sealing connection of the equipment, and the stationary ring assembly 2 is fixedly connected to the sealing cover of the equipment. The rotating ring assembly 1 and the stationary ring assembly 2 cooperate to achieve a compensating sealing treatment. The spring 101 provides elastic compensation support for the rotating ring 102 in the rotating ring assembly 1, ensuring that the rotating ring 102 and the stationary ring 201 are always in a tightly sealed state. When the stationary ring 201 undergoes thermal displacement due to high temperature, the elastic support of the spring 101 re-tightens and seals the rotating ring 102 and the stationary ring 201, effectively improving the compensating sealing effect. 1. When the seal is tightened, the annular boss 103 at the end of the rotating ring 102 is inserted into the inner side of the annular groove 202 at the end of the stationary ring 201. This effectively performs an internal expansion connection and sealing treatment on the stationary ring 201, which can effectively improve the sealing connection effect between the rotating ring 102 and the stationary ring 201. By adopting the contact connection method of the annular boss 103 and the annular groove 202, the annular boss 103 can perform internal expansion and contraction treatment on the stationary ring 201 through the annular groove 202. As the insertion distance between the annular boss 103 and the annular groove 202 changes, the internal expansion and tightening of the annular boss 103 on the annular groove 202 can be changed, which can adjust the overall expansion and contraction of the stationary ring 201. This can effectively compensate for the overall expansion and contraction of the stationary ring 201 in the high-temperature working environment, and effectively ensure the sealing performance.

[0027] Multiple annular sealing rings 203 are provided on the outer wall of the stationary ring 201. The annular sealing rings 203 provide multiple auxiliary sealing treatments on the outer wall of the stationary ring 201, which can effectively improve the sealing effect of the stationary ring 201. Multiple annular sealing pieces 204 are provided on the inner wall of the annular groove 202. The annular sealing pieces 204 enhance the sealing effect between the annular boss 103 and the annular groove 202, which can effectively improve the sealing effect between the annular boss 103 and the annular groove 202. The annular sealing pieces 204 are designed to be inclined on the inner wall of the annular groove 202. The line connecting the ends of two adjacent annular sealing pieces 204 away from the annular groove 202 is designed to be parallel to the inner wall of the annular groove 202, so that the contact and fit effect between the annular sealing pieces 204 and the annular boss 103 is better, which can effectively ensure the contact effect between the annular sealing pieces 204 and the annular groove 202 and the annular boss 103, and effectively ensure the sealing performance.

[0028] The outer walls of two adjacent annular sealing pieces 204 are designed to be on the same plane at one end, so that the adjacent annular sealing pieces 204 will not overlap after being squeezed, which can effectively improve the surface fit between the annular sealing piece 204 and the annular boss 103. The annular boss 103 is designed as a frustum-shaped boss structure with a central opening, and the annular groove 202 is designed as a frustum-shaped groove structure with a central opening. After the annular boss 103 is inserted into the annular groove 202, the frustum structure pushes the stationary ring 201 outward, which makes the expansion and contraction of the stationary ring 201 more uniform and can effectively improve the sealing performance of the stationary ring 201.

[0029] By designing compensating sealing components, dynamic compensation can be provided at the seals of the equipment (air preheater) to counteract problems such as thermal displacement at equipment connections.

[0030] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A compensating sealing assembly, comprising a dynamic ring assembly (1) and a stationary ring assembly (2), characterized in that: The moving ring assembly (1) includes a spring (101), and a moving ring (102) is provided on the outer wall of the spring (101) near the stationary ring assembly (2). An annular boss (103) is provided on the outer wall of the moving ring (102) near the stationary ring assembly (2). The stationary ring assembly (2) includes a stationary ring (201), and an annular groove (202) matching the annular boss (103) is provided on the outer wall of the stationary ring (201) near the moving ring (102).

2. The compensating sealing assembly according to claim 1, characterized in that: The outer wall of the stationary ring (201) is provided with a plurality of annular sealing rings (203), and the inner wall of the annular groove (202) is provided with a plurality of annular sealing pieces (204).

3. A compensating sealing assembly according to claim 2, characterized in that: The annular sealing sheet (204) is inclinedly disposed on the inner wall of the annular groove (202), and the line connecting the ends of two adjacent annular sealing sheets (204) away from the annular groove (202) is parallel to the inner wall of the annular groove (202).

4. A compensating sealing assembly according to claim 3, characterized in that: The outer walls of two adjacent annular sealing pieces (204) are located on the same plane at one adjacent end.

5. A compensating sealing assembly according to claim 1, characterized in that: It also includes a sliding guide assembly, which includes a plurality of matching sliders (105) and guide rails (104). The sliders (105) are disposed on the outer wall of the moving ring (102), and the guide rails (104) are perpendicular to the moving ring (102).

6. A compensating sealing assembly according to claim 1, characterized in that: The annular boss (103) is a frustum-shaped boss structure with a central opening, and the annular groove (202) is a frustum-shaped groove structure with a central opening.

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