Double-groove supporting ring sealing structure
By adopting a double groove support ring sealing structure in oil downhole tools, the problem of O-ring being squeezed during assembly is solved, ensuring the reliability of the seal and the integrity of the tool, and reducing economic losses and operating risks.
Patent Information
- Application Number
- CN202422301128.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-20
AI Technical Summary
During the assembly of oil underground tools, the O-ring is easily squeezed and damaged, resulting in reduced seal reliability and may even lead to the inability to disassemble the male and female joints, increasing economic losses and operating risks.
The double groove support ring sealing structure is adopted, including several sealing grooves and sealing units on the outer wall of the male joint. The sealing unit is composed of a first single groove support ring, a second single groove support ring, a first O-ring, a second O-ring and a double groove support ring. By setting a double groove support ring between the first O-ring and the second O-ring, friction forces are avoided to squeeze the sealing gap and protect the O-ring from being squeezed.
It effectively avoids the problem of O-ring being squeezed during assembly, ensures the seal reliability of O-ring in high-temperature and high-pressure wells, prevents tools from being scrapped, and reduces economic losses and operating risks.
Smart Images
Figure CN223136915U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sealing devices, and particularly relates to a double-groove support ring sealing structure. Background Art
[0002] The O-ring sealing structure is a commonly used sealing structure for downhole tools in oil fields. In the application of high-temperature and high-pressure wells, the existing mature structures are: single-groove support ring + O-ring + single-groove support ring, which is commonly used in liquid sealing and the sealing parts of the pressure difference between the inside and outside of the pipe string; single-groove support ring + O-ring + O-ring + single-groove support ring, which is commonly used in gas sealing and the air cavity sealing parts that bear absolute pressure on the pipe string. When there are two or more sealing structures on the male and female connectors, the frictional resistance is relatively large during the assembly process. During the process of knocking the male connector into the sealing surface of the female connector, in the single-groove support ring + O-ring + O-ring + single-groove support ring sealing structure, the O-ring is easily squeezed into the sealing gap, resulting in phenomena such as being squeezed and broken or squeezed and damaged, which not only affects the sealing reliability, but even may cause the male and female connectors to be unable to be disassembled, leading to the scrapping of the tool, bringing certain economic losses to the oil field and a relatively high risk of operation failure. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a double-groove support ring sealing structure, which solves the problem of squeezing and damaging the O-ring during the assembly process of downhole tools in oil fields.
[0004] The technical solution adopted by the utility model is that the double-groove support ring sealing structure includes a male connector, several sealing grooves are formed on the outer wall of the male connector, sealing units are arranged in each of the several sealing grooves, and a female connector is sleeved on the outer wall of the male connector.
[0005] The characteristics of the utility model further lie in that:
[0006] The several sealing grooves are parallel to each other, the several sealing grooves are all arranged annularly along the outer wall of the male connector, and the several sealing grooves are perpendicular to the axis of the male connector.
[0007] The sealing unit includes a first single-groove support ring, a second single-groove support ring, a first O-ring, a second O-ring and a double-groove support ring.
[0008] The first single-groove support ring and the second single-groove support ring are arranged at both ends of the sealing groove, the first O-ring and the second O-ring are arranged between the first single-groove support ring and the second single-groove support ring, and the double-groove support ring is arranged between the first O-ring and the second O-ring.
[0009] A first groove is formed on one side of the first single-groove support ring close to the first O-ring, the first groove is matched with the first O-ring, a second groove is formed on one side of the second single-groove support ring close to the second O-ring, and the second groove is matched with the second O-ring.
[0010] On one side of the double-groove support ring close to the first O-ring, a third groove is provided, and the third groove is matched with the first O-ring. On one side of the double-groove support ring close to the second O-ring, a fourth groove is provided, and the fourth groove is matched with the second O-ring.
[0011] The beneficial effects of the present utility model are:
[0012] The double-groove support ring sealing structure provided by the present utility model, by arranging the double-groove support ring between the first O-ring and the second O-ring, the third groove and the fourth groove on both end faces of the double-groove support ring are respectively matched with the first O-ring and the second O-ring, not only separating the first O-ring and the second O-ring, avoiding the first O-ring and the second O-ring adjacent to each other during the assembly process being squeezed by the frictional force into the sealing gap, and the first O-ring and the second O-ring can enter the groove on the end face of the support ring, and the groove on the end face of the support ring plays a protective role for the first O-ring and the second O-ring, effectively solving the problem of squeezing and damaging the first O-ring and the second O-ring during the assembly process, and ensuring the sealing reliability of the O-ring in the high-temperature and high-pressure well. Description of the Drawings
[0013] Figure 1 is a schematic structural diagram of the double-groove support ring sealing structure of the present utility model;
[0014] Figure 2 is a partial enlarged view of A of the present utility model.
[0015] In the figure, 1. male connector, 2. sealing groove, 3. female connector, 4. first single-groove support ring, 41. first groove, 5. second single-groove support ring, 51. second groove, 6. first O-ring, 7. second O-ring, 8. double-groove support ring, 81. third groove, 82. fourth groove. Specific Embodiments
[0016] The present utility model will be described in detail below in conjunction with the drawings and specific embodiments.
[0017] The double-groove support ring sealing structure provided by the present utility model, as Figure 1 shown, includes a male connector 1. A plurality of sealing grooves 2 are provided on the outer wall of the male connector 1. Sealing units are provided in each of the plurality of sealing grooves 2. A female connector 3 is sleeved on the outer wall of the male connector 1, facilitating the sealing of the male connector 1 and the female connector 3 through the sealing units; the plurality of sealing grooves 2 are parallel to each other, the plurality of sealing grooves 2 are all arranged annularly along the outer wall of the male connector 1, and the plurality of sealing grooves 2 are perpendicular to the axis of the male connector 1. As Figure 2As shown in the figure, the sealing unit includes a first single-groove support ring 4, a second single-groove support ring 5, a first O-ring 6, a second O-ring 7 and a double-groove support ring 8. The first single-groove support ring 4 and the second single-groove support ring 5 are arranged at both ends of the sealing groove 2. The first O-ring 6 and the second O-ring 7 are arranged between the first single-groove support ring 4 and the second single-groove support ring 5. The double-groove support ring 8 is arranged between the first O-ring 6 and the second O-ring 7. A first groove 41 is formed on one side of the first single-groove support ring 4 close to the first O-ring 6, and the first groove 41 is matched with the first O-ring 6. A second groove 51 is formed on one side of the second single-groove support ring 5 close to the second O-ring 7, and the second groove 51 is matched with the second O-ring 7. A third groove 81 is formed on one side of the double-groove support ring 8 close to the first O-ring 6, and the third groove 81 is matched with the first O-ring 6. A fourth groove 82 is formed on one side of the double-groove support ring 8 close to the second O-ring 7, and the fourth groove 82 is matched with the second O-ring 7. By arranging the double-groove support ring 8 between the first O-ring 6 and the second O-ring 7, the third groove 81 and the fourth groove 82 on both end faces of the double-groove support ring 8 are respectively matched with the first O-ring 6 and the second O-ring 7, which not only separates the first O-ring 6 and the second O-ring 7, avoiding the first O-ring 6 and the second O-ring 7 adjacent to each other during the assembly process from being squeezed by the frictional force into the sealing gap, but also enables the first O-ring 6 and the second O-ring 7 to enter the grooves on the end face of the support ring. The grooves on the end face of the support ring play a protective role for the first O-ring 6 and the second O-ring 7, effectively solving the problem of squeezing and damaging the first O-ring 6 and the second O-ring 7 during the assembly process.
[0018] Example 1
[0019] The double-groove support ring sealing structure proposed in this example, as Figure 1 shown, includes a male connector 1. A plurality of sealing grooves 2 are formed on the outer wall of the male connector 1. A sealing unit is arranged in each of the plurality of sealing grooves 2. A female connector 3 is sleeved on the outer wall of the male connector 1.
[0020] Example 2
[0021] The double-groove support ring sealing structure proposed in this example, as Figure 1 shown, includes a male connector 1. A plurality of sealing grooves 2 are formed on the outer wall of the male connector 1. A sealing unit is arranged in each of the plurality of sealing grooves 2. A female connector 3 is sleeved on the outer wall of the male connector 1. The plurality of sealing grooves 2 are parallel to each other, and the plurality of sealing grooves 2 are all arranged annularly along the outer wall of the male connector 1, and the plurality of sealing grooves 2 are perpendicular to the axis of the male connector 1.
[0022] Example 3
[0023] The double-groove support ring sealing structure proposed in this example, as Figure 1As shown in the figure, it includes a male connector 1. A plurality of sealing grooves 2 are formed on the outer wall of the male connector 1. Sealing units are arranged in each of the plurality of sealing grooves 2. A female connector 3 is sleeved on the outer wall of the male connector 1. The plurality of sealing grooves 2 are parallel to each other, and the plurality of sealing grooves 2 are all arranged annularly along the outer wall of the male connector 1, and the plurality of sealing grooves 2 are perpendicular to the axis of the male connector 1. As Figure 2 shown, the sealing unit includes a first single-groove support ring 4, a second single-groove support ring 5, a first O-ring 6, a second O-ring 7 and a double-groove support ring 8.
[0024] Example 4
[0025] The double-groove support ring sealing structure proposed in this example, as Figure 1 shown, it includes a male connector 1. A plurality of sealing grooves 2 are formed on the outer wall of the male connector 1. Sealing units are arranged in each of the plurality of sealing grooves 2. A female connector 3 is sleeved on the outer wall of the male connector 1. The plurality of sealing grooves 2 are parallel to each other, and the plurality of sealing grooves 2 are all arranged annularly along the outer wall of the male connector 1, and the plurality of sealing grooves 2 are perpendicular to the axis of the male connector 1. As Figure 2 shown, the sealing unit includes a first single-groove support ring 4, a second single-groove support ring 5, a first O-ring 6, a second O-ring 7 and a double-groove support ring 8; the first single-groove support ring 4 and the second single-groove support ring 5 are arranged at both ends of the sealing groove 2, the first O-ring 6 and the second O-ring 7 are arranged between the first single-groove support ring 4 and the second single-groove support ring 5, and the double-groove support ring 8 is arranged between the first O-ring 6 and the second O-ring 7.
[0026] Example 5
[0027] The double-groove support ring sealing structure proposed in this example, as Figure 1 shown, it includes a male connector 1. A plurality of sealing grooves 2 are formed on the outer wall of the male connector 1. Sealing units are arranged in each of the plurality of sealing grooves 2. A female connector 3 is sleeved on the outer wall of the male connector 1. The plurality of sealing grooves 2 are parallel to each other, and the plurality of sealing grooves 2 are all arranged annularly along the outer wall of the male connector 1, and the plurality of sealing grooves 2 are perpendicular to the axis of the male connector 1. As Figure 2 shown, the sealing unit includes a first single-groove support ring 4, a second single-groove support ring 5, a first O-ring 6, a second O-ring 7 and a double-groove support ring 8; the first single-groove support ring 4 and the second single-groove support ring 5 are arranged at both ends of the sealing groove 2, the first O-ring 6 and the second O-ring 7 are arranged between the first single-groove support ring 4 and the second single-groove support ring 5, and the double-groove support ring 8 is arranged between the first O-ring 6 and the second O-ring 7; a first groove 41 is formed on the side of the first single-groove support ring 4 close to the first O-ring 6, the first groove 41 is matched with the first O-ring 6, a second groove 51 is formed on the side of the second single-groove support ring 5 close to the second O-ring 7, and the second groove 51 is matched with the second O-ring 7.
[0028] Example 6
[0029] The double-groove support ring sealing structure proposed in this embodiment, as Figure 1 shown, includes a male connector 1. A plurality of sealing grooves 2 are formed on the outer wall of the male connector 1. Sealing units are arranged in the plurality of sealing grooves 2. A female connector 3 is sleeved on the outer wall of the male connector 1. The plurality of sealing grooves 2 are parallel to each other, the plurality of sealing grooves 2 are all arranged annularly along the outer wall of the male connector 1, and the plurality of sealing grooves 2 are perpendicular to the axis of the male connector 1. As Figure 2 shown, the sealing unit includes a first single-groove support ring 4, a second single-groove support ring 5, a first O-ring 6, a second O-ring 7 and a double-groove support ring 8. The first single-groove support ring 4 and the second single-groove support ring 5 are arranged at both ends of the sealing groove 2. The first O-ring 6 and the second O-ring 7 are arranged between the first single-groove support ring 4 and the second single-groove support ring 5. The double-groove support ring 8 is arranged between the first O-ring 6 and the second O-ring 7. A first groove 41 is formed on one side of the first single-groove support ring 4 close to the first O-ring 6, and the first groove 41 is matched with the first O-ring 6. A second groove 51 is formed on one side of the second single-groove support ring 5 close to the second O-ring 7, and the second groove 51 is matched with the second O-ring 7. A third groove 81 is formed on one side of the double-groove support ring 8 close to the first O-ring 6, and the third groove 81 is matched with the first O-ring 6. A fourth groove 82 is formed on one side of the double-groove support ring 8 close to the second O-ring 7, and the fourth groove 82 is matched with the second O-ring 7.
Claims
1. Double-groove support ring sealing structure, characterized in that, It includes a male connector (1), on the outer wall of which there are provided a plurality of sealing grooves (2), and sealing units are provided in each of the plurality of sealing grooves (2), and a female connector (3) is sleeved on the outer wall of the male connector (1).
2. The double-groove support ring sealing structure according to claim 1, wherein The plurality of sealing grooves (2) are parallel to each other, the plurality of sealing grooves (2) are all arranged annularly along the outer wall of the male connector (1), and the plurality of sealing grooves (2) are perpendicular to the axis of the male connector (1).
3. The double-groove support ring sealing structure according to claim 2, wherein The sealing unit includes a first single-groove support ring (4), a second single-groove support ring (5), a first O-ring (6), a second O-ring (7) and a double-groove support ring (8).
4. The double-groove support ring sealing structure according to claim 3, wherein, The first single-groove support ring (4) and the second single-groove support ring (5) are arranged at both ends of the sealing groove (2), the first O-ring (6) and the second O-ring (7) are arranged between the first single-groove support ring (4) and the second single-groove support ring (5), and the double-groove support ring (8) is arranged between the first O-ring (6) and the second O-ring (7).
5. The double-groove support ring sealing structure according to claim 4, characterized in that On one side of the first single-groove support ring (4) close to the first O-ring (6), a first groove (41) is provided, and the first groove (41) is matched with the first O-ring (6). On one side of the second single-groove support ring (5) close to the second O-ring (7), a second groove (51) is provided, and the second groove (51) is matched with the second O-ring (7).
6. The double-groove support ring sealing structure according to claim 5, wherein On one side of the double-groove support ring (8) close to the first O-ring (6), a third groove (81) is provided, and the third groove (81) is matched with the first O-ring (6). On one side of the double-groove support ring (8) close to the second O-ring (7), a fourth groove (82) is provided, and the fourth groove (82) is matched with the second O-ring (7).