Double-seal high-pressure movable elbow

Abstract

The utility model belongs to the technical field of high-pressure movable elbows, and particularly relates to a double-seal high-pressure movable elbow which comprises a first elbow and a second elbow, the first elbow and the second elbow are tightly connected in an inserted mode, two sealing rings are tightly connected between the first elbow and the second elbow in a clamped mode, the diameters of the two sealing rings are different, a sinking groove is formed in the first elbow, and the diameter of the sinking groove is larger than that of the second elbow. And a sealing ring slides in the sinking groove, one side wall of the sealing ring is tightly attached to the second elbow, and a spring is fixed in the sinking groove. The two sealing rings are arranged between the first elbow and the second elbow, so that the double-sealing effect on the first elbow and the second elbow which are connected can be achieved, the sealing rings are further arranged outside the two sealing rings, the sealing rings are extruded through the spring, and the sealing effect is good. Even if the sealing ring is abraded, the sealing ring can be always kept in the state of being tightly attached to the second elbow, and therefore the situation of leakage can be further avoided.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure movable elbow technology, specifically a double-sealed high-pressure movable elbow. Background Technology

[0002] High-pressure movable elbows are special pipeline transmission equipment used in oilfield drilling, cementing, fracturing and other operations. In fracturing operations, a large number of movable elbows are needed to connect the fracturing truck to the high-pressure manifold and wellhead for transporting high-pressure fracturing fluid.

[0003] High-pressure swivel elbows operate in harsh environments with high pressure and large internal flow, making them highly susceptible to erosion of the sealing devices at the connection points by fluids. This can lead to seal failure, affecting construction safety and potentially causing serious accidents. Therefore, we propose a double-seal high-pressure swivel elbow to address these issues. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a double-sealed high-pressure movable elbow, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A double-sealed high-pressure movable elbow includes elbow one and elbow two, which are tightly inserted together. Two sealing rings with different diameters are tightly engaged between elbow one and elbow two. Elbow one has a groove inside, and a sealing ring slides inside the groove. One side wall of the sealing ring is tightly fitted with elbow two. Springs are fixed inside the groove, and the other end of each spring is fixedly connected to the sealing ring.

[0009] Furthermore, both the outer wall of elbow one and the inner wall of elbow two are provided with arc-shaped grooves at equal intervals, and steel balls are arranged inside the two corresponding arc-shaped grooves.

[0010] Furthermore, a wear-resistant ring is fixed to the surface of the second elbow, and the surface of the wear-resistant ring is in contact with the inner wall of the first elbow.

[0011] Furthermore, a dustproof ring is fixed to the surface of the second elbow, and the surface of the dustproof ring is in close contact with the inner wall of the first elbow.

[0012] Furthermore, an anti-slip ring is fixed to the surface of elbow one, and an anti-slip ring is fixed to the surface of elbow two.

[0013] Furthermore, all the springs are made of stainless steel.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a double-sealed high-pressure movable elbow, which has the following characteristics:

[0016] Beneficial effects:

[0017] This invention provides a double sealing effect by setting two sealing rings between elbow one and elbow two. Furthermore, a sealing ring is set outside the two sealing rings and is compressed by a spring. Even if the sealing ring is worn, it can always be kept in close contact with elbow two, thereby further preventing leakage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the elbow of this utility model.

[0021] In the diagram: 1. Elbow 1; 2. Elbow 2; 3. Sealing ring; 4. Slot; 5. Sealing ring; 6. Spring; 7. Arc groove; 8. Steel ball; 9. Wear-resistant ring; 10. Dustproof ring; 11. Anti-slip ring 1; 12. Anti-slip ring 2. Detailed Implementation

[0022] 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.

[0023] Example

[0024] like Figure 1 , Figure 2 and Figure 3As shown in the figure, an embodiment of this utility model proposes a double-sealed high-pressure movable elbow, including elbow 1 and elbow 2. An anti-slip ring 11 is fixed to the surface of elbow 1, and an anti-slip ring 22 is fixed to the surface of elbow 2. This provides an anti-slip effect when the worker's hand comes into contact with the surfaces of elbow 1 and elbow 2. Elbow 1 and elbow 2 are tightly inserted, and two sealing rings 3 with different diameters are tightly engaged between them. A groove 4 is formed inside elbow 1, and a sealing ring 5 slides inside the groove 4. One side wall of the sealing ring 5 is tightly fitted to elbow 2. Springs 6, made of stainless steel, are fixed inside each groove 4. Spring 6 has high strength and durability, and can withstand greater pressure and frequent use, thereby reducing the need for replacement and maintenance. The other end of spring 6 is fixedly connected to sealing ring 5. When using this double-sealed high-pressure movable elbow, two sealing rings 3 with different diameters are set between elbow 1 and elbow 2. So when the sealing ring 3 with smaller inner diameter is damaged, the sealing ring 3 with larger inner diameter can still provide protection. When both are damaged, the sealing ring 5 can still provide sealing protection. When elbow 1 and elbow 2 are connected, spring 6 will be in a compressed state. When sealing ring 5 is worn, the restoring force of spring 6 can keep sealing ring 5 in a tight fit with elbow 2.

[0025] like Figure 2 As shown, in some embodiments, the outer wall of elbow 1 and the inner wall of elbow 2 are provided with arc-shaped grooves 7 at equal intervals. Steel balls 8 are provided inside the two corresponding arc-shaped grooves 7. The steel balls 8 are used to make elbow 1 and elbow 2 rotate after being connected. The number of steel balls 8 provided inside the two arc-shaped grooves 7 is not one, and the number used depends on the usage needs.

[0026] like Figure 2 As shown, in some embodiments, a wear-resistant ring 9 is fixed to the surface of elbow 2. The surface of the wear-resistant ring 9 is in contact with the inner wall of elbow 1. When elbow 1 and elbow 2 rotate, the wear-resistant ring 9 supports and straightens them.

[0027] like Figure 2 As shown, in some embodiments, a dustproof ring 10 is fixed to the surface of elbow 2. The surface of the dustproof ring 10 is in close contact with the inner wall of elbow 1. The dustproof ring 10 can prevent dust from entering the contact area where the two rotate.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A double-sealed high-pressure movable elbow, comprising elbow one (1) and elbow two (2), characterized in that: The elbow one (1) and elbow two (2) are tightly inserted together. Two sealing rings (3) are tightly clamped between the elbow one (1) and elbow two (2). The two sealing rings (3) have different diameters. An inner groove (4) is provided in the elbow one (1). A sealing ring (5) slides inside the inner groove (4). One side wall of the sealing ring (5) is tightly fitted with the elbow two (2). A spring (6) is fixed inside the inner groove (4). The other end of the spring (6) is fixedly connected to the sealing ring (5).

2. The double-sealed high-pressure movable elbow according to claim 1, characterized in that: Both the outer wall of elbow one (1) and the inner wall of elbow two (2) are provided with arc-shaped grooves (7) at equal intervals, and steel balls (8) are provided inside the two corresponding arc-shaped grooves (7).

3. The double-sealed high-pressure movable elbow according to claim 1, characterized in that: A wear-resistant ring (9) is fixed to the surface of the second elbow (2), and the surface of the wear-resistant ring (9) is in contact with the inner wall of the first elbow (1).

4. The double-sealed high-pressure movable elbow according to claim 1, characterized in that: A dustproof ring (10) is fixed to the surface of the second elbow (2), and the surface of the dustproof ring (10) is in close contact with the inner wall of the first elbow (1).

5. A double-sealed high-pressure movable elbow according to claim 1, characterized in that: The surface of the elbow one (1) is fixed with an anti-slip ring one (11), and the surface of the elbow two (2) is fixed with an anti-slip ring two (12).

6. A double-sealed high-pressure movable elbow according to claim 1, characterized in that: All springs (6) are made of stainless steel.

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