Anti-corrosion and anti-abrasion connector of sucker rod

Abstract

The anti-corrosion and anti-abrasion connector comprises a sucker rod body, the outer ring of the sucker rod body is in threaded connection with a connector, the outer ring of the connector is provided with an anti-corrosion hierarchical mechanism, the anti-corrosion hierarchical mechanism comprises a protection ring, a waterproof layer, an anti-corrosion layer, a carbon fiber layer and a coating layer, the protection ring is installed on the outer ring of the connector, and the waterproof layer is installed on the outer ring of the connector. A waterproof layer is arranged in the protection ring, an anti-corrosion layer is arranged on one side of the waterproof layer, a carbon fiber layer is arranged on one side of the anti-corrosion layer, and a coating layer is arranged on one side of the carbon fiber layer and used for isolating corrosive liquid. Through mutual cooperation of the anti-corrosion layer mechanism, the wear-resistant ring and other structures, a hierarchical mechanism in the protection ring can isolate and protect corrosive liquid outside the sucker rod body, the corrosive liquid is prevented from invading into the connector, the anti-corrosion effect is achieved on the connector, meanwhile, the wear-resistant ring can rub against particulate matter in the wear-resistant ring, friction between the particulate matter and the protection ring is reduced, and the service life of the sucker rod is prolonged. And the anti-abrasion effect can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sucker rod anticorrosion and antiwear joint, specifically to a sucker rod anticorrosion and antiwear joint. BACKGROUND

[0002] The sucker rod is mainly used in petroleum operation, wherein the connecting head is needed when the sucker rod is connected, and two sucker rods are connected.

[0003] At present, the sucker rod connecting head needs to be used in underground operation after being connected, but the corrosion and wear of the connecting head are caused by long-time effect underground, thereby reducing the service life and affecting the working efficiency. UTILITY MODEL CONTENT

[0004] In order to solve the above problems, the utility model aims at providing a sucker rod anticorrosion and antiwear joint to solve the problems in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides a sucker rod anticorrosion and antiwear joint, which comprises a sucker rod body, and a connecting head is threadedly connected to the outer ring of the sucker rod body.

[0006] The outer ring of the connecting head is provided with an anticorrosion layer mechanism, and the anticorrosion layer mechanism comprises a protective ring, a waterproof layer, an anticorrosion layer, a carbon fiber layer and a paint layer.

[0007] In one example, the outer ring of the connecting head is provided with a second gasket, and the second gasket is attached to the protective ring and the sucker rod body respectively.

[0008] In one example, the outer ring of the connecting head is provided with a first gasket, and the first gasket is attached to the top end of the protective ring.

[0009] In one example, the outer ring of the connecting head is threadedly connected to a compression ring, and the compression ring is connected to the first gasket.

[0010] In one example, the top end of the connecting head is threadedly connected to a mounting head, and the mounting head is internally provided with a connecting thread.

[0011] In one example, the outer ring of the protective ring is fixedly provided with two wear-resistant rings.

[0012] The sucker rod anticorrosion and antiwear joint can bring the following beneficial effects:

[0013] 1. This kind of sucker rod anti-corrosion and anti-wear joint cooperates with the anti-corrosion layer structure and the wear-resistant ring and other structures. The layered structure in the protective ring can isolate and protect the corrosive liquid outside the sucker rod body, preventing it from invading the connector and thus providing anti-corrosion effect. At the same time, the wear-resistant ring can rub against the particles therein, reducing the friction between the particles and the protective ring, thereby preventing it from wearing.

[0014] 2. This sucker rod anti-corrosion and anti-wear joint seals the gap between the protective ring and the sucker rod body by installing a second gasket on the outer ring of the connector. At the same time, a first gasket is installed at the bottom end of the protective ring and then a clamping ring is threadedly connected to the outer ring of the connector to compress it, thereby compressing the first gasket and preventing corrosive liquid from invading the protective ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Fig. 1 This is a schematic diagram of the structure of the utility model;

[0017] Fig. 2 This is a schematic diagram of the connector structure of the utility model;

[0018] Fig. 3 This is a schematic diagram of the hierarchical structure of the protective ring of the utility model.

[0019] In the figure: 1. Sucker rod body; 2. Connector; 3. Wear-resistant ring; 4. Clamping ring; 5. First gasket; 6. Second gasket; 7. Protective ring; 701. Waterproof layer; 702. Anti-corrosion layer; 703. Carbon fiber layer; 704. Paint layer; 8. Mounting head; 9. Connecting thread. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0021] like Figs. 1-3 As shown, the embodiment of the present utility model provides an anti-corrosion and anti-wear joint for a sucker rod, comprising a sucker rod body 1, wherein the outer ring of the sucker rod body 1 is threadedly connected to a connector 2;

[0022] The outer ring of the connecting head 2 is provided with an anti-corrosion layer mechanism, and the anti-corrosion layer mechanism comprises a protective ring 7, a waterproof layer 701, an anti-corrosion layer 702, a carbon fiber layer 703 and a paint layer 704, the outer ring of the connecting head 2 is provided with the protective ring 7, the inside of the protective ring 7 is provided with the waterproof layer 701, one side of the waterproof layer 701 is provided with the anti-corrosion layer 702, one side of the anti-corrosion layer 702 is provided with the carbon fiber layer 703, one side of the carbon fiber layer 703 is provided with the paint layer 704, and the paint layer 704 is used for isolating the corrosive liquid.

[0023] Specifically, the outer ring of the connecting head 2 is provided with the second gasket 6, the second gasket 6 is attached to the protective ring 7 and the sucker rod body 1 respectively, the second gasket 6 is fixed and installed by the connecting head 2, and the second gasket 6 seals the gap between the sucker rod body 1 and the protective ring 7.

[0024] Specifically, the outer ring of the connecting head 2 is provided with the first gasket 5, the first gasket 5 is attached to the top end of the protective ring 7, and the gap between the protective ring 7 and the connecting head 2 is sealed by the first gasket 5.

[0025] Specifically, the outer ring of the connecting head 2 is threadedly connected with the compression ring 4, the compression ring 4 is connected with the first gasket 5, the top of the first gasket 5 is compressed by the compression ring 4, so that a better sealing effect is achieved.

[0026] Specifically, the top end of the connecting head 2 is threadedly connected with the mounting head 8, the inside of the mounting head 8 is provided with a connecting thread 9, another sucker rod is connected by the mounting head 8, and the other sucker rod is stabilized by the connecting thread 9.

[0027] Specifically, the outer ring of the protective ring 7 is fixedly provided with two wear-resistant rings 3, the wear-resistant rings 3 are rubbed by sand and gravel, so that the wear-resistant rings 3 are not directly rubbed by the protective ring 7, and the wear of the wear-resistant rings 3 is increased.

[0028] Working principle: when the protective ring 7 needs to be corrosion resistant, the inner wall of the protective ring 7 is provided with a waterproof layer 701, the waterproof layer 701 blocks the liquid, avoids the liquid directly corroding the connector 2, one side of the waterproof layer 701 is provided with a corrosion resistant layer 702, the corrosion resistant layer 702 mainly coats a layer of zinc to play an antioxidant role, one side of the corrosion resistant layer 702 is provided with a carbon fiber layer 703, the carbon fiber layer 703 is mainly composed of a layer of carbon element, which mainly isolates some oxidizing substances to avoid them entering the protective ring 7 and causing corrosion and wear of the connector 2, one side of the carbon fiber layer 703 is provided with a coating layer 704, mainly coating a layer of aluminum powder to isolate some corrosive liquids, then the second gasket 6 is installed on the outer circle of the connector 2 to close the gap between the sucker rod body 1 and the protective ring 7, and the first gasket 5 is installed on the top of the protective ring 7 to block the gap between the protective ring 7 and the connector 2, then the first gasket 5 is pressed by the threaded connection of the compression ring 4 on the outer circle of the connector 2 to avoid the corrosive liquid from entering the connector 2 and causing corrosion, and two wear-resistant rings 3 are installed on the outer circle of the protective ring 7 to avoid the direct friction of sand and stone with the protective ring 7 and play a wear-resistant role.

[0029] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments. Especially, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the related parts can be referred to the part of the method embodiment.

[0030] The above only describes the embodiments of the present application and does not limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A sucker rod anti-corrosion and anti-wear joint, comprising a sucker rod body (1), wherein the outer ring of the sucker rod body (1) is threadedly connected to a connector (2); Its characteristics are: The outer ring of the connector (2) is provided with an anti-corrosion hierarchical structure, and the anti-corrosion hierarchical structure includes a protective ring (7), a waterproof layer (701), an anti-corrosion layer (702), a carbon fiber layer (703) and a coating layer (704). The outer ring of the connector (2) is provided with a protective ring (7), the interior of the protective ring (7) is provided with a waterproof layer (701), one side of the waterproof layer (701) is provided with an anti-corrosion layer (702), one side of the anti-corrosion layer (702) is provided with a carbon fiber layer (703), one side of the carbon fiber layer (703) is provided with a coating layer (704), and the coating layer (704) is used to isolate the corrosive liquid.

2. The anti-corrosion and anti-wear joint for a sucker rod according to claim 1, characterized in that: A second gasket (6) is installed on the outer ring of the connector (2), and the second gasket (6) is respectively fitted with the protective ring (7) and the sucker rod body (1).

3. The anti-corrosion and anti-wear joint for a sucker rod according to claim 2, characterized in that: The outer ring of the connector (2) is provided with a first gasket (5), and the first gasket (5) is fitted with the top end of the protective ring (7).

4. The anti-corrosion and anti-wear joint for a sucker rod according to claim 3, characterized in that: The outer ring of the connector (2) is threadedly connected to a clamping ring (4), and the clamping ring (4) is connected to the first gasket (5).

5. The anti-corrosion and anti-wear joint for a sucker rod according to claim 4, characterized in that: The top end of the connecting head (2) is threadedly connected to a mounting head (8), and a connecting thread (9) is provided inside the mounting head (8).

6. The anti-corrosion and anti-wear joint for a sucker rod according to claim 1, characterized in that: Two wear-resistant rings (3) are fixedly mounted on the outer ring of the protective ring (7).

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