Composite carbon graphite seal ring

Abstract

The utility model relates to the technical field of sealing ring provides a kind of composite carbon graphite sealing ring, including connecting ring, the both sides of the connecting ring are provided with support structure.The utility model is provided with support structure, the elastic force of spring is evenly transmitted to carbon graphite sealing ring body by support ring, provides even, stable radial elastic support force for carbon graphite sealing ring body, ensure that multiple carbon graphite sealing ring bodies are closely attached, ensure sealing, the elasticity of spring allows support ring and the carbon graphite sealing ring body contacted with it to carry out small radial displacement, can automatically compensate the wear amount of carbon graphite sealing ring body, prolong service life, realized the device has the function of buffering and elastic support for carbon graphite sealing ring body, improve the convenience and applicability of the composite carbon graphite sealing ring when using.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, and in particular to a composite carbon graphite sealing ring. Background Technology

[0002] With the rapid development of industries such as energy, chemicals, aerospace, and automobile manufacturing towards high speed, high pressure, high temperature, and high reliability, the performance requirements for mechanical seals—a key component of core equipment—have reached unprecedented levels. Sealing system failure is often the direct cause of unplanned equipment downtime, decreased production efficiency, and even safety accidents. High speed, high pressure, and frequent start-stop cycles leading to dry friction or weak lubrication severely affect the sealing effect of the sealing ring. Therefore, a composite carbon-graphite sealing ring needs to be designed.

[0003] To address this, patent CN213017662U discloses a metal-embedded carbon-graphite sealing ring, comprising a sealing ring body, a metal insert fixedly connected to the sealing ring body, multiple evenly distributed movable cavities on the sealing ring body, an auxiliary sealing mechanism slidably connected within the movable cavities, the auxiliary sealing mechanism including an auxiliary sealing block, a connecting block connected to the side of the auxiliary sealing block located within the movable cavity, a slide rail on the sealing ring body matching the connecting block, the movable cavity communicating with the slide rail, a spring connecting the sealing ring body and the connecting block, an airbag connected to the side of the auxiliary sealing block away from the connecting block, and the auxiliary sealing block being made of metal to improve its service life. This invention, by adding an auxiliary sealing mechanism to the sealing element, allows the sealing ring to function normally even when the end face is uneven, thus easily ensuring the sealing effect of the sealing ring and facilitating long-term use by the user.

[0004] While the metal-embedded carbon graphite sealing rings described above are easy to use and ensure a good seal, their effectiveness is affected by wear over long-term use. Therefore, a composite carbon graphite sealing ring needs to be designed. Utility Model Content

[0005] The purpose of this invention is to provide a composite carbon graphite sealing ring to solve the defect that the sealing effect of existing sealing rings is affected by wear after long-term use.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a composite carbon graphite sealing ring, including a connecting ring;

[0007] Both sides of the connecting ring are provided with support structures. The support structure includes a reserved groove, a spring and a support ring. The reserved groove is evenly opened on both sides inside the connecting ring. A spring is provided inside the reserved groove. A support ring is fixed to the end of the spring away from the connecting ring.

[0008] The support ring is provided with carbon graphite sealing ring bodies evenly distributed on the side away from the connecting ring, and the outer side of the carbon graphite sealing ring bodies is provided with protective structures.

[0009] The carbon graphite sealing ring body has an assembly structure on the side away from the connecting ring.

[0010] Furthermore, the reserved slots are evenly distributed inside the connecting ring, and one end of the spring is fixedly connected to the inner wall of the connecting ring.

[0011] Furthermore, one side of the support ring and one side of the carbon graphite sealing ring body abut against each other.

[0012] Furthermore, the assembly structure includes a mounting ring, mounting holes, a top cover, a sealing ring, a convex ring, and a fixing pin. The mounting ring is located on one side of the connecting ring, and the top cover is located on the other side of the connecting ring. A convex ring is fixed on the outer wall of both the mounting ring and the top cover near the carbon graphite sealing ring body. A sealing ring is fitted on the outer side of each convex ring. Mounting holes are evenly distributed inside the mounting ring, and fixing pins are evenly distributed through the inside of the top cover.

[0013] Furthermore, the mounting holes are evenly spaced inside the mounting ring, one side of each sealing ring abuts against the outer side of the carbon graphite sealing ring body, and one end of each fixing pin passes through the protective structure and extends into the interior of the mounting ring.

[0014] Furthermore, the protective structure includes a protective shell, a protective pad, and fixing bolts. The protective shell is evenly distributed on the outer side of the carbon graphite sealing ring body, and protective pads are fixed on the inner wall of the protective shell. Fixing bolts penetrate both sides of the inner side of the protective shell.

[0015] Furthermore, the protective outer shell is symmetrically distributed on both sides of the carbon graphite sealing ring body, and the inner wall of the protective pad and the outer wall of the carbon graphite sealing ring body abut against each other.

[0016] The composite carbon-graphite sealing ring provided by this utility model has the following advantages:

[0017] With a supporting structure, multiple springs are evenly distributed on both sides of the connecting ring. The spring force is evenly transmitted to the carbon graphite sealing ring body through the supporting ring, providing uniform and stable radial elastic support force for the carbon graphite sealing ring body. This ensures that multiple sets of carbon graphite sealing ring bodies fit tightly together, guaranteeing sealing performance. The elasticity of the springs allows for slight radial displacement of the supporting ring and the carbon graphite sealing ring body in contact with it, which can automatically compensate for the wear of the carbon graphite sealing ring body, extending its service life. At the same time, it can absorb and buffer radial vibration and impact from the shaft system, preventing the carbon graphite sealing ring body from breaking due to vibration, improving operational stability and reliability. This device has the function of facilitating buffering and elastic support for the carbon graphite sealing ring body, improving the convenience and applicability of the composite carbon graphite sealing ring in use.

[0018] With an assembly structure, the entire sealing ring assembly can be fixed into the equipment cavity using bolts through mounting holes. The fixing pin is inserted into the interior of the protective shell, which prevents the shell from rotating circumferentially on the outside of the carbon graphite sealing ring body. The sealing ring is in close contact with the outer wall of the carbon graphite sealing ring body, effectively preventing the medium from entering the inside of the protective shell from the gap between the mounting ring and the top cover. The convex ring positions and supports the sealing ring, preventing it from being squeezed out by the high-pressure medium. The mounting ring and the top cover clamp the internal connecting ring, support structure and carbon graphite sealing ring body from both sides, forming a rigid whole. The fixing pin ensures accurate circumferential positioning of the entire module in the equipment, ensuring the reliability of the sealing effect. This device has the function of facilitating the installation of the carbon graphite sealing ring body, improving the convenience of using the composite carbon graphite sealing ring.

[0019] By incorporating a protective structure, the protective shell wraps around the outer circumference of the carbon graphite sealing ring body, providing robust mechanical protection. This effectively prevents breakage or chipping due to accidental impact, compression, or excessive radial force during handling, installation, or operation. The protective pad prevents direct contact between the carbon graphite sealing ring body and the inner wall of the protective shell, avoiding friction between the inner wall of the protective shell and the outer wall of the carbon graphite sealing ring body. This protects the carbon graphite sealing ring body and significantly extends its service life. The protective structure is fixed to the outside of the carbon graphite sealing ring body with fixing bolts and connected with fixing pins and assembly structures, enhancing the structural integrity and rigidity of the entire device. This allows it to withstand higher working pressures and provides convenient protection for the outer side of the carbon graphite sealing ring body, improving the durability of the composite carbon graphite sealing ring during use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0021] Figure 2This is a schematic diagram of the front cross-sectional structure of this utility model;

[0022] Figure 3 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model;

[0023] Figure 4 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention;

[0024] Figure 5 This is a top-view cross-sectional three-dimensional structural diagram of the present invention.

[0025] The reference numerals in the figure are as follows: 1. Connecting ring; 2. Support structure; 21. Reserved groove; 22. Spring; 23. Support ring; 3. Carbon graphite sealing ring body; 4. Assembly structure; 41. Mounting ring; 42. Mounting hole; 43. Top cover; 44. Sealing ring; 45. Raised ring; 46. Fixing pin; 5. Protective structure; 51. Protective shell; 52. Protective pad; 53. Fixing bolt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 The present invention provides a composite carbon graphite sealing ring, including a connecting ring 1.

[0028] Reference Figures 2-5 The connecting ring 1 has a support structure 2 on both sides. The support structure 2 includes a reserved groove 21, a spring 22 and a support ring 23. The reserved groove 21 is evenly opened on both sides inside the connecting ring 1. A spring 22 is provided inside the reserved groove 21. The end of the spring 22 away from the connecting ring 1 is fixed to the support ring 23. The reserved groove 21 is evenly distributed inside the connecting ring 1. One end of the spring 22 is fixedly connected to the inner wall of the connecting ring 1. One side of the support ring 23 abuts against one side of the carbon graphite sealing ring body 3.

[0029] During installation and operation, the carbon graphite sealing ring body 3 is subjected to radial compression, and the pressure is transmitted to the support ring 23. The support ring 23 transmits the pressure to the spring 22, which undergoes elastic deformation, generating a reverse force. This elastic force reacts through the support ring 23 onto the carbon graphite sealing ring body 3, ensuring that it remains tightly fitted and forms a stable sealing pair. When vibration or wear occurs, the extension and retraction of the spring 22 continuously provides compensation, which can buffer and protect the carbon graphite sealing ring body 3.

[0030] Reference Figures 1-5 The support ring 23 has a carbon graphite sealing ring body 3 evenly arranged on the side away from the connecting ring 1. The outer side of the carbon graphite sealing ring body 3 is provided with a protective structure 5. The protective structure 5 includes a protective shell 51, a protective pad 52 and a fixing bolt 53. The protective shell 51 is evenly arranged on the outer side of the carbon graphite sealing ring body 3. The protective pad 52 is fixed on the inner wall of the protective shell 51. The fixing bolt 53 passes through both sides of the inner side of the protective shell 51. The protective shell 51 is symmetrically distributed on both sides of the carbon graphite sealing ring body 3. The inner wall of the protective pad 52 and the outer wall of the carbon graphite sealing ring body 3 abut against each other.

[0031] During assembly, the two sets of protective shells 51 are respectively fitted onto the outside of the carbon graphite sealing ring body 3. Then, the fixing bolts 53 are inserted into the two sides inside the protective shells 51 and tightened to fix the protective shells 51 on the outside of the carbon graphite sealing ring body 3 and protect the carbon graphite sealing ring body 3.

[0032] Reference Figures 1-5 The carbon graphite sealing ring body 3 is provided with an assembly structure 4 on the side away from the connecting ring 1. The assembly structure 4 includes a mounting ring 41, mounting holes 42, a top cover 43, a sealing ring 44, a convex ring 45, and a fixing pin 46. The mounting ring 41 is located on one side of the connecting ring 1, and the top cover 43 is located on the other side of the connecting ring 1. A convex ring 45 is fixed on the outer wall of the mounting ring 41 and the top cover 43 near the carbon graphite sealing ring body 3. A sealing ring 44 is fitted on the outer side of the convex ring 45. Mounting holes 42 are evenly distributed inside the mounting ring 41. Fixing pins 46 are evenly distributed inside the top cover 43. The mounting holes 42 are evenly distributed inside the mounting ring 41. One side of the sealing ring 44 abuts against the outer side of the carbon graphite sealing ring body 3. One end of the fixing pin 46 passes through the protective structure 5 and extends into the interior of the mounting ring 41.

[0033] During assembly, the mounting ring 41 is placed on one side of the carbon graphite sealing ring body 3, and then the top cover 43 is placed on the other side of the carbon graphite sealing ring body 3. After alignment, the fixing pin 46 is inserted from the reserved hole on one side of the top cover 43, so that the fixing pin 46 passes through the hole inside the protective shell 51 until one end of the fixing pin 46 extends into the interior of the mounting ring 41. Tightening the fixing pin 46 will fix the mounting ring 41 and the top cover 43 on both sides of the device respectively. The protruding ring 45 can fill the gap between the carbon graphite sealing ring body 3 and the mounting ring 41, as well as between the carbon graphite sealing ring body 3 and the top cover 43, to prevent external substances from entering the device and ensure the overall sealing of the device.

[0034] 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 composite carbon graphite sealing ring, comprising a connecting ring (1); Its features are: The connecting ring (1) is provided with support structures (2) on both sides. The support structure (2) includes a reserved groove (21), a spring (22) and a support ring (23). The reserved groove (21) is evenly opened on both sides inside the connecting ring (1). The reserved groove (21) is provided with a spring (22) inside. The end of the spring (22) away from the connecting ring (1) is fixed with a support ring (23). The support ring (23) is provided with a carbon graphite sealing ring body (3) on the side away from the connecting ring (1), and a protective structure (5) is provided on the outer side of the carbon graphite sealing ring body (3). The carbon graphite sealing ring body (3) is provided with an assembly structure (4) on the side away from the connecting ring (1).

2. The composite carbon-graphite sealing ring according to claim 1, characterized in that: The reserved slots (21) are evenly distributed inside the connecting ring (1), and one end of the spring (22) is fixedly connected to the inner wall of the connecting ring (1).

3. The composite carbon-graphite sealing ring according to claim 1, characterized in that: One side of the support ring (23) and one side of the carbon graphite sealing ring body (3) are in contact with each other.

4. The composite carbon-graphite sealing ring according to claim 1, characterized in that: The assembly structure (4) includes a mounting ring (41), mounting holes (42), a top cover (43), a sealing ring (44), a convex ring (45), and a fixing pin (46). The mounting ring (41) is located on one side of the connecting ring (1), and the top cover (43) is located on the other side of the connecting ring (1). The mounting ring (41) and the top cover (43) are both fixed with convex rings (45) on the outer wall of the side of the carbon graphite sealing ring body (3). The outer side of the convex ring (45) is fitted with a sealing ring (44). The mounting ring (41) has mounting holes (42) evenly distributed inside, and the top cover (43) has fixing pins (46) evenly distributed inside.

5. A composite carbon-graphite sealing ring according to claim 4, characterized in that: The mounting holes (42) are evenly distributed inside the mounting ring (41), one side of the sealing ring (44) is in contact with the outer side of the carbon graphite sealing ring body (3), and one end of the fixing pin (46) passes through the protective structure (5) and extends into the interior of the mounting ring (41).

6. A composite carbon-graphite sealing ring according to claim 1, characterized in that: The protective structure (5) includes a protective shell (51), a protective pad (52), and a fixing bolt (53). The protective shell (51) is evenly arranged on the outside of the carbon graphite sealing ring body (3). The protective pad (52) is fixed on the inner wall of the protective shell (51). The fixing bolt (53) passes through both sides of the inside of the protective shell (51).

7. A composite carbon-graphite sealing ring according to claim 6, characterized in that: The protective outer shell (51) is symmetrically distributed on both sides of the carbon graphite sealing ring body (3), and the inner wall of the protective pad (52) and the outer wall of the carbon graphite sealing ring body (3) abut against each other.

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