Quick-fixing sealed bead

Abstract

This utility model provides a quick-fixing sealing steel ring, relating to the field of sealing steel ring technology. It includes an upper ring, a sealing gasket, and a lower ring. The sealing gasket is located between the upper and lower rings, and both ends of the sealing gasket have sloping surfaces. The outer edges of the opposing surfaces of the upper and lower rings each have a sloping edge, and the sloping edges of the upper and lower rings respectively abut against the sloping surfaces on both sides of the sealing gasket. The lower ring has several annularly arranged countersunk holes near its inner side on the side facing the upper ring. The upper ring, sealing gasket, and lower ring can be installed independently. When installing the lower ring or upper ring alone, only a clearance fit is needed for positioning; there is no need for contact with the elastic sealing gasket. In this case, the two sides of the tube will not compress any elastic component. The sealing gasket is installed independently due to its folding and twisting elasticity, without bearing additional pressure from the upper or lower ring during installation. This prevents the sealing gasket from cracking or deforming due to excessively small installation gaps or excessive installation force.

Description

Technical Field

[0001] This utility model relates to the field of sealing steel ring technology, and in particular to a quick-fixing sealing steel ring. Background Technology

[0002] Sealing steel rings generally refer to ring-shaped sealing components made of metal materials (commonly stainless steel, carbon steel, alloy steel, etc.). They are often used in mechanical devices where leakage prevention, pressure resistance, and high temperature resistance are required. For example, in the existing technology, the casing head hanger is equipped with a sealing steel ring to improve the sealing performance after installation.

[0003] Therefore, a sealing steel ring for a casing head hanger, disclosed in CN221525538U, includes a sealing steel ring body installed in a sealing groove at the end of the casing head hanger. Elastic compensation elements are provided on two parallel annular surfaces of the sealing steel ring body to form a protruding platform-like structure on the annular surface of the sealing steel ring body, filling gaps caused by surface scratches. With elastic compensation elements on both parallel annular surfaces, after the sealing steel ring is installed, the elastic compensation elements rebound under pressure, forming a continuously supporting structure on the annular surface of the sealing steel ring, preventing gaps caused by surface scratches from affecting the sealing performance.

[0004] However, when the sealing steel ring is installed in the sealing groove, the tubes on both sides will squeeze the elastic compensation component, the rubber airbag will be compressed, and the compensation steel plate will move into the reserved groove. If the installation gap is too small or the installation force is too large, it may cause the rubber airbag to rupture or the elastic band to deform. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a quick-fixing sealing steel ring.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a quick-fixing sealing steel ring, comprising an upper ring, a sealing washer, and a lower ring. The sealing washer is located between the upper and lower rings, and both ends of the sealing washer are provided with sloping surfaces. The outer sides of the opposite surfaces of the upper and lower rings are provided with sloping edges, and the sloping edges of the surfaces of the upper and lower rings respectively abut against the sloping surfaces on both sides of the sealing washer. The side of the lower ring facing the upper ring has a plurality of annularly arranged threaded countersunk holes near its inner side. The end face of the sealing washer has positioning holes corresponding one-to-one with the position and number of the plurality of threaded countersunk holes. The end of the upper ring facing away from the lower ring has an annular groove passing through the plurality of positioning holes. The bottom of the annular groove has through holes corresponding one-to-one with the position and number of the plurality of positioning holes. A long screw is provided in the annular groove at each through hole position. The screw rod passes through the corresponding through hole and positioning hole in sequence and is threadedly connected to the corresponding threaded countersunk hole.

[0007] Preferably, an inner ring is fixedly installed on the inner side of the side of the upper ring facing the lower ring, and an outer ring is fixedly installed on the side of the lower ring facing the upper ring, which is slidably connected to the outer wall of the inner ring and coaxially distributed with the upper ring.

[0008] Preferably, the outer edge of the sealing gasket is provided with an arc surface, and the outer edge of the sealing gasket is interference-fitted with the outer edge of the upper ring.

[0009] Preferably, the annular groove is threaded with a spiral cap, the opening of which fits against the bottom of the annular groove and the inner wall of the spiral cap opening is inserted into the head of a long screw.

[0010] Preferably, the spiral cap is rotatably connected to a rotating ring on the outer side of the side facing the annular groove opening, and the inner side of the rotating ring is a polygonal surface.

[0011] Preferably, the spiral cap has a fixing hole on its surface, and the rotating ring has a fixing screw threadedly connected to the fixing hole.

[0012] Preferably, the inner wall of the annular groove is provided with a connecting hole, and a positioning screw that is threadedly connected to the connecting hole is provided through the inner side of the rotating ring.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, the upper ring, sealing gasket and lower ring are installed separately. When the lower ring or upper ring is installed separately, only the gap fit is needed to complete the positioning. There is no need to contact the elastic sealing gasket. At this time, the tubes on both sides will not squeeze any elastic components. The sealing gasket is installed separately by means of the elastic characteristics of folding and twisting. It does not need to bear the additional pressure of the upper ring or lower ring during installation. The sealing gasket will not break or deform due to the installation gap being too small or the installation force being too large.

[0015] 2. In this utility model, after the spiral cap enters the annular groove through the threaded connection, the cap opening fits against the bottom of the annular groove and the inner wall is inserted into the head of the long screw, directly forming a physical limit on the head of the long screw, preventing the long screw from moving in the annular groove due to vibration or other factors. After the positioning screw fixes the rotating ring to the annular groove, the rotating ring restricts the lifting and lowering movement of the spiral cap in the annular groove through the rotational connection with the spiral cap, completely eliminating the risk of the spiral cap coming off the annular groove due to loosening of the threads due to long-term use, forming a dual anti-loosening system of the spiral cap preventing the long screw from loosening and the positioning screw preventing the spiral cap from loosening. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a sealing steel ring for rapid fixation is provided for this utility model;

[0017] Figure 2This utility model proposes a quick-fixing sealing steel ring. Figure 1 A schematic diagram of the exploded structure;

[0018] Figure 3 This utility model proposes a quick-fixing sealing steel ring. Figure 1 A schematic diagram of the cross-sectional structure;

[0019] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0020] Legend: 1. Upper ring; 2. Lower ring; 3. Sealing gasket; 4. Sloping surface; 5. Outer ring; 6. Inner ring; 7. Long screw; 8. Threaded countersunk hole; 9. Through hole; 10. Spiral cap; 11. Positioning screw; 12. Rotary ring; 13. Fixing screw; 14. Positioning hole; 15. Annular groove; 16. Connecting hole; 17. Fixing hole; 18. Bevel. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figures 1-4As shown, a quick-fixing sealing steel ring includes an upper ring 1, a sealing gasket 3, and a lower ring 2. The sealing gasket 3 is located between the upper ring 1 and the lower ring 2, and both ends of the sealing gasket 3 have inclined surfaces 4. The outer edges of the opposite surfaces of the upper ring 1 and the lower ring 2 each have inclined edges 18, and the inclined edges 18 on the surfaces of the upper ring 1 and the lower ring 2 respectively abut against the inclined surfaces 4 on both sides of the sealing gasket 3. The sealing gasket 3 is made of elastic material. Therefore, in actual installation, the lower ring 2 is installed first using a clearance fit, and then the sealing gasket 3 is folded and twisted to prevent damage to the sealing gasket. In case 3, the sealing gasket 3 is installed in the sealing groove at the end of the sleeve head hanger. At this time, the contact pressure between the sealing gasket 3 and the sealing groove is not large. In order to increase the contact pressure between the sealing gasket 3 and the sealing groove, the upper ring 1 is rotated and installed again. The upper ring 1 and the lower ring 2 are brought closer to each other, and the inclined side 18 of the opposite surface contacts the inclined surface 4 of the corresponding surface of the sealing gasket 3. This allows the sealing gasket 3 to expand and deform outward, increasing the contact pressure between the sealing gasket 3 and the sealing groove, thereby ensuring the sealing effect; the lower ring 2 faces the upper ring 1. One side of the sealing gasket 3 has several annularly arranged countersunk holes 8 near its inner side. The end face of the sealing gasket 3 has positioning holes 14 corresponding to the positions and number of the countersunk holes 8. The end of the upper ring 1 facing away from the lower ring 2 has an annular groove 15 passing through the positioning holes 14. The bottom of the annular groove 15 has through holes 9 corresponding to the positions and number of the positioning holes 14. A long screw 7 is installed in each through hole 9 within the annular groove 15. The screw 7 passes sequentially through the corresponding through hole 9 and positioning hole 14 and engages with the corresponding thread. After the upper ring 1, lower ring 2 and sealing washer 3 are aligned, the stud part of the long screw 7 passes through the through hole 9 of the upper ring 1 and the positioning hole 14 of the sealing washer 3 in sequence, and finally connects with the threaded countersunk hole 8 of the lower ring 2. By continuously rotating the long screw 7, the head of the long screw 7 overlaps with the bottom of the annular groove 15 in the upper ring 1. By continuously rotating and tightening the long screw 7, the upper ring 1 and lower ring 2 can be brought closer to each other, thereby achieving double-sided pressure on the sealing washer 3 and fixing the relative positions of the upper ring 1, sealing washer 3 and lower ring 2.

[0024] An inner ring 6 is fixedly installed on the inner side of the side of the upper ring 1 facing the lower ring 2. An outer ring 5 is fixedly installed on the side of the lower ring 2 facing the upper ring 1, which is slidably connected to the outer wall of the inner ring 6 and coaxially distributed with the upper ring 1. The cooperation between the inner ring 6 and the outer ring 5 can ensure that when the upper ring 1 is finally installed, the upper ring 1 is directly coaxial with the lower ring 2. In this solution, by appropriately adjusting the inner diameter of the sealing gasket 3, when installing the sealing gasket 3, the inner side of the sealing gasket 3 can be fitted onto the outer side of the outer ring 5 to achieve smooth coaxiality between the sealing gasket 3 and the lower ring 2. Therefore, in subsequent actual operation, only the sealing gasket 3 and the upper ring 1 need to be rotated to align the corresponding threaded countersunk hole 8, positioning hole 14 and through hole 9, which is convenient for the installation of long screw 7. The outer side of the sealing gasket 3 is set with an arc surface, and the outer edge of the sealing gasket 3 is interference-fitted with the outer side of the upper ring 1.

[0025] To prevent the long screw 7 from loosening during use, a spiral cap 10 is threaded into the annular groove 15. The opening of the spiral cap 10 fits against the bottom of the annular groove 15, and the inner wall of the spiral cap 10 is inserted into the head of the long screw 7. The spiral cap 10, installed spirally, presses down on the head of the long screw 7, preventing it from moving within the annular groove 15 due to loosening. A rotating ring 12 is rotatably connected to the outer side of the spiral cap 10 facing the groove opening of the annular groove 15. The inner side of the rotating ring 12 is polygonal. A fixing hole 17 is provided on the surface of the spiral cap 10, and a fixing screw 13, threaded into the fixing hole 17, is provided through the surface of the rotating ring 12. A connecting hole 16 is provided on the inner wall of the annular groove 15, and a positioning screw 11, threaded into the connecting hole 16, is provided through the inner side of the rotating ring 12. To facilitate the rotation and installation of the spiral cap 10, the rotating ring 12 is rotated until the position of the fixing screw 13 is aligned with the fixing hole 17. The fixing screw 13 can be easily installed in the fixing hole 17 to fix the relative position of the rotating ring 12 and the spiral cover 10. It is convenient for personnel to use a wrench to insert into the inner polygonal side wall of the rotating ring 12 and drive the rotating ring 12 to rotate the spiral cover 10. After the spiral cover 10 is installed, the fixing screw 13 can be removed by rotating. Then, the rotating ring 12 can be rotated alone until the positioning screw 11 installed on the rotating ring 12 is aligned with the connecting hole 16 on the inner side wall of the annular groove 15. The relative position of the rotating ring 12 and the annular groove 15 can be achieved by the threaded connection between the positioning screw 11 and the connecting hole 16. By fixing the position of the rotating ring 12, the spiral cover 10 cannot be raised or lowered in the annular groove 15, thus preventing the spiral cover 10 from loosening and falling out of the annular groove 15. In addition, the positioning screw 11 threadedly connected to the connecting hole 16 in this solution can be fixed by adhesive or other known common methods to prevent the positioning screw 11 from rotating.

[0026] The method of using this utility model is as follows: Utilizing the clearance fit characteristic, the lower ring 2 is first installed in the designated installation position to provide a basic positioning reference for the subsequent installation of other components. Since the sealing gasket 3 is made of elastic material, it is installed in the sealing groove at the end of the sleeve head hanger by folding and twisting without damaging its structure. At this time, with the cooperation of the inner diameter of the sealing gasket 3 and the outer ring 5 of the lower ring 2, the sealing gasket 3 and the lower ring 2 are kept coaxial, and the initial positioning of the sealing gasket 3 is completed. The upper ring 1 is placed on top of the sealing gasket 3, and the sliding connection structure between the inner ring 6 of the upper ring 1 and the outer ring 5 of the lower ring 2 ensures that the upper ring 1 and the lower ring 2 are precisely coaxial. Then, rotate the sealing washer 3 and the upper ring 1 to align the positions of the threaded countersunk hole 8 of the lower ring 2, the positioning hole 14 of the sealing washer 3, and the through hole 9 of the upper ring 1, preparing for the installation of the long screw 7. Insert the long screw 7 into each through hole 9 within the annular groove 15, and pass the screw portion of the long screw 7 sequentially through the through hole 9 of the upper ring 1, the positioning hole 14 of the sealing washer 3, and thread it into the threaded countersunk hole 8 of the lower ring 2. By continuously rotating and tightening the long screw 7, the overlap between the head of the long screw 7 and the bottom of the annular groove 15 of the upper ring 1 drives the upper ring 1 and the lower ring 2 closer together, achieving double-sided pressure on the sealing washer 3. This ultimately fixes the relative positions of the upper ring 1, the sealing washer 3, and the lower ring 2, while simultaneously causing the sealing washer 3 to expand and deform outwards, increasing the contact pressure with the sealing groove and ensuring a sealing effect.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A quick-fixing sealing steel ring, characterized in that: The device includes an upper ring (1), a sealing gasket (3), and a lower ring (2). The sealing gasket (3) is located between the upper ring (1) and the lower ring (2), and both ends of the sealing gasket (3) are provided with inclined surfaces (4). The outer sides of the opposite surfaces of the upper ring (1) and the lower ring (2) are provided with inclined edges (18), and the inclined edges (18) on the surfaces of the upper ring (1) and the lower ring (2) respectively abut against the inclined surfaces (4) on both sides of the sealing gasket (3). The side of the lower ring (2) facing the upper ring (1) has several annularly arranged countersunk holes (8) near the inner side. The end face of the sealing gasket (3) The upper ring (1) is provided with positioning holes (14) corresponding to the positions and number of several threaded countersunk holes (8). The upper ring (1) is provided with an annular groove (15) passing through several positioning holes (14) at one end away from the lower ring (2). The bottom of the annular groove (15) is provided with through holes (9) corresponding to the positions and number of several positioning holes (14). A long screw (7) is provided in the annular groove (15) at each through hole (9). The screw part of the long screw (7) passes through the corresponding through hole (9) and positioning hole (14) in sequence and is threadedly connected to the corresponding threaded countersunk hole (8).

2. The quick-fixing sealing steel ring according to claim 1, characterized in that: An inner ring (6) is fixedly installed on the inner side of the side of the upper ring (1) facing the lower ring (2), and an outer ring (5) is fixedly installed on the side of the lower ring (2) facing the upper ring (1), which is slidably connected to the outer wall of the inner ring (6) and coaxially distributed with the upper ring (1).

3. The quick-fixing sealing steel ring according to claim 1, characterized in that: The outer side of the sealing gasket (3) is provided with an arc surface, and the outer edge of the sealing gasket (3) is interference-fitted with the outer side of the upper ring (1).

4. The quick-fixing sealing steel ring according to claim 1, characterized in that: The annular groove (15) is internally threaded with a spiral cap (10), the opening of the spiral cap (10) is fitted with the bottom of the annular groove (15) and the inner wall of the spiral cap (10) is inserted into the head of the long screw (7).

5. The quick-fixing sealing steel ring according to claim 4, characterized in that: The spiral cap (10) is rotatably connected to a rotating ring (12) on the outer side of the side facing the annular groove (15), and the inner side of the rotating ring (12) is a polygonal surface.

6. The quick-fixing sealing steel ring according to claim 5, characterized in that: The spiral cap (10) has a fixing hole (17) on its surface, and the rotating ring (12) has a fixing screw (13) threadedly connected to the fixing hole (17) through its surface.

7. The quick-fixing sealing steel ring according to claim 5, characterized in that: The inner wall of the annular groove (15) is provided with a connecting hole (16), and the inner side of the rotating ring (12) is provided with a positioning screw (11) that is threadedly connected to the connecting hole (16).

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