Corrosion probe

Abstract

The corrosion probe comprises a hollow plug cock and a base which are sleeved inside and outside, one end of the hollow plug cock is connected with a connecting rod, and the other end of the hollow plug cock is connected with a joint seat; the end, close to the connecting rod, of the base is sleeved with a protective cover. One end of the connector seat is connected with a connector column, a corrosion probe is fixed at the free end of the connector column, and a sealing ring is arranged between the hollow plug cock and the base. The connector base and the connector column are connected in an inserted mode through a clamping structure. Due to the design of the sealing ring, extrusion force is transmitted more effectively, the extrusion force requirement of the sealing ring for achieving good sealing is lowered, the adaptability of a sealing piece is improved, excellent sealing performance is achieved, and medium leakage is prevented; the design of the clamping structure simplifies the assembling and disassembling operation, effectively improves the assembling, disassembling and replacing efficiency of the corrosion probe, ensures that the installation of the corrosion probe has higher stability, and avoids the problem that the rotation is not in place.

Description

Technical Field

[0001] The utility model belongs to the technical field of corrosion detection, and particularly relates to a corrosion probe. Background Art

[0002] Corrosion not only causes significant economic losses, but also is a potential hidden danger for many accidents. With the increasing attention paid to corrosion and protection issues, corrosion monitoring work has also developed rapidly. Although corrosion monitoring technology has a development history of nearly 60 years, people's understanding of the role of corrosion monitoring is a gradually improving process. In recent years, it has been well applied and developed. At the same time, the performance and structure of corrosion monitoring technology and corrosion monitoring equipment have also developed rapidly.

[0003] With the development of large oil and gas fields in China, especially the successive exploitation of high-pressure sour gas and carbon dioxide-containing natural gas, higher requirements are put forward for the safety of oil and gas fields. Corrosion monitoring, as a basic work of corrosion protection, has received more and more attention and emphasis from oil and gas production enterprises. The resistance probe corrosion monitoring technology realizes the on-line monitoring of the corrosion rate of metal in the process medium by measuring the change of the resistance value of the metal sensitive element during the corrosion process in the process medium. Since the resistance probe corrosion monitoring technology is applicable to various gas field medium working environments including gas phase, liquid phase, solid phase and flowing particles, and the measurement is rapid, it can timely reflect the corrosion situation of equipment pipelines, and can conduct real-time, continuous and networked remote monitoring of oil and gas pipelines. Combining historical data, it can also predict the future development trend of pipeline or equipment corrosion, and has advantages that other corrosion monitoring technologies do not have. It is often used to estimate the pipeline life and evaluate the corrosion damage degree of oil and gas pipelines.

[0004] The existing corrosion resistance probe structure usually includes a connecting rod, a protective cover, a hollow plug, a base and a corrosion probe as shown in Figure 1 . A rubber sealing ring is usually installed between the hollow plug and the base for sealing to prevent the leakage of the medium. The existing conventional rubber sealing ring usually has a rectangular cross-section. During the extrusion sealing process, a relatively large extrusion force is required to extrude the conventional sealing ring to fully deform to achieve good sealing, and the requirement for the extrusion force is relatively high, and the assembly requirement is also high. At the same time, the corrosion probe is usually installed by means of threaded connection. When assembling and disassembling, it is necessary to continuously rotate by hand, the operation is cumbersome and laborious, and it is difficult to ensure the stable installation of the corrosion probe due to the error of manual operation.

[0005] Therefore, it is necessary to provide a sealing structure for the corrosion probe to solve the above technical problems. Summary of the Utility Model

[0006] The utility model is proposed to solve the problems existing in the prior art, and its purpose is to provide a corrosion probe.

[0007] The present utility model is realized through the following technical solutions:

[0008] An erosion probe, comprising a hollow plug and a base sleeved inside and outside each other, one end of the hollow plug is connected to a connecting rod, and the other end is connected to a joint seat; a protective cover is sleeved outside one end of the base close to the connecting rod; one end of the joint seat is connected to a joint column, and the free end of the joint column is fixed with the erosion probe. A sealing ring is arranged between the hollow plug and the base, and the cross section of the sealing ring is trapezoidal; the joint seat and the joint column are inserted and connected through a clamping structure.

[0009] In the above technical solution, at least one cavity is formed inside the sealing ring, and a metal elastic sheet is arranged in the cavity. The longitudinal section of the metal elastic sheet is in an X shape, and its upper and lower ends are fixed to the cavity wall.

[0010] In the above technical solution, the clamping structure includes a receiving groove formed at the connecting end of the joint seat and the joint column, at least one L-shaped sliding groove formed on the groove wall of the receiving groove, and at least one clamping column fixed on the outer wall of the joint column; the clamping column is inserted into the L-shaped sliding groove.

[0011] In the above technical solution, when there are multiple L-shaped sliding grooves, the multiple L-shaped sliding grooves are evenly distributed on the groove wall of the receiving groove in the same rotation direction.

[0012] In the above technical solution, the vertical section of the L-shaped sliding groove is parallel to the axis of the receiving groove, and the free end of the vertical section is open. A limiting groove is formed on one side of the end of the horizontal section of the L-shaped sliding groove close to the erosion probe, and the limiting groove is communicated with the L-shaped sliding groove.

[0013] In the above technical solution, the clamping structure further includes an inner plate and a spring. The inner plate is arranged on the end surface of the connecting end of the joint column and the joint seat, and both ends of the spring are fixed to the inner plate and the bottom of the receiving groove of the joint seat respectively.

[0014] In the above technical solution, a rubber ring is sleeved outside the inner plate, and slot holes are opened at the centers of the joint seat and the inner plate, and the slot holes on the joint seat and the inner plate are coaxially arranged.

[0015] The beneficial effects of the present utility model are:

[0016] The utility model provides a corrosion probe, which is designed with a unique sealing structure and a clamping structure. The sealing structure enables the extrusion force between the hollow plug and the base to be transmitted more effectively through a sealing ring with a trapezoidal cross-section, reducing the extrusion force required for the sealing ring to achieve good sealing. At the same time, the sealing ring with a trapezoidal cross-section has better elasticity, can well adapt to structural deformation, can better adapt to and fit the surface of the sealing component, improves the adaptability of the seal, achieves excellent sealing performance, effectively improves the sealing property, and better prevents medium leakage. When installing the corrosion probe, the joint column is inserted into the joint seat and rotated by a certain angle, so that the joint column is fixedly installed in the joint seat through the clamping structure, realizing the rapid installation of the corrosion probe. When it is necessary to remove and replace the corrosion probe, the joint column is rotated in the reverse direction, and then the corrosion probe can be removed, eliminating the need for manual continuous rotation of the thread to install and disassemble the corrosion probe, simplifying the installation and disassembly operation, effectively improving the installation, disassembly and replacement efficiency of the corrosion probe, and at the same time ensuring that the installation of the corrosion probe has high stability and avoiding the problem of insufficient rotation. Brief Description of the Drawings

[0017] Figure 1 is a schematic diagram of the external structure of the utility model;

[0018] Figure 2 is a sectional view of the utility model;

[0019] Figure 3 is a sectional view of the sealing ring in the utility model;

[0020] Figure 4 is a sectional view of the sealing ring in the utility model (cavity position);

[0021] Figure 5 is an assembly structure schematic diagram of the clamping structure in the utility model;

[0022] Figure 6 is a sectional view of the clamping structure in the utility model;

[0023] Figure 7 is a structural schematic diagram of the clamping groove in the utility model.

[0024] Wherein:

[0025] 1. Connecting rod; 2. Protective cover; 3. Hollow plug; 4. Base; 5. Corrosion probe; 6. Sealing ring; 701. L-shaped sliding groove; 702. Clamping post; 703. Limiting groove; 704. Built-in plate; 705. Rubber ring; 706. Spring; 707. Slot hole; 8. Joint seat; 9. Cavity; 10. Metal elastic sheet; 11. Joint column.

[0026] For those of ordinary skill in the art, other related drawings can be obtained based on the above drawings without creative efforts. Detailed implementation manners

[0027] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model will be further described below in conjunction with the drawings of the specification and through specific implementation manners.

[0028] As Figures 1 to 7 shown, a corrosion probe includes a hollow plug 3 and a base 4 sleeved inside and outside. One end of the hollow plug 3 is connected to a connecting rod 1, and the other end is connected to a joint seat 8. The joint seat 8 is inserted and connected to a joint column 11, and a corrosion probe 5 is fixed at the free end of the joint column 11. A sealing ring 6 is arranged between the hollow plug 3 and the base 4. A protective cover 2 is sleeved outside one end of the base 4 close to the connecting rod 1. The cross section of the sealing ring 6 is trapezoidal. A clamping structure is arranged between the joint seat 8 and the joint column 11.

[0029] The hollow plug 3 and the base 4 are connected by threads, and the hollow plug 3 and the connecting rod 1 are connected by threads.

[0030] A through hole is formed in the middle of the protective cover 2, and the hollow plug 3 extends out from the through hole.

[0031] In this application, the connecting rod 1, the protective cover 2, the hollow plug 3 and the base 4 are all common structural designs of commercially available products.

[0032] At least one cavity 9 is formed inside the sealing ring 6, and a metal elastic sheet 10 is arranged in the cavity 9. The longitudinal section of the metal elastic sheet 10 is in an X shape, and its upper and lower ends are fixed to the cavity wall of the cavity 9. By arranging the cavity 9 and the metal elastic sheet 10, the elastic deformation performance of the sealing ring 6 is further improved, the extrusion pressure requirement for the sealing ring 6 to achieve good sealing is further reduced, and the sealing effect of the sealing ring 6 is improved.

[0033] The clamping structure includes a receiving groove formed at the connecting end of the joint seat 8 and the joint column 11, a plurality of L-shaped sliding grooves 701 evenly distributed on the groove wall of the receiving groove in the same rotation direction, and a plurality of clamping columns 702 evenly distributed on the outer wall of the joint column 11. The vertical section of the L-shaped sliding groove 701 is parallel to the axis of the receiving groove, and the free end of the vertical section is open. A limiting groove 703 is formed on one side of the end of the horizontal section of the L-shaped sliding groove 701 close to the corrosion probe 5, and the limiting groove 703 communicates with the L-shaped sliding groove 701.

[0034] The clamping structure further includes an inner plate 704 and a spring 706. The inner plate 704 is arranged on the end face of the connecting end of the joint column 11 and the joint seat 8, and both ends of the spring 706 are fixed to the inner plate 704 and the bottom of the receiving groove of the joint seat 8 respectively.

[0035] When installing the corrosion probe 5, the clamping column 702 is aligned with the opening of the L-shaped slide groove 701, so that the clamping column 702 is inserted into the L-shaped slide groove 701, and the joint column 11 is rotated at a certain angle to make the clamping column 702 clamped in the limiting section of the L-shaped slide groove 701, and the clamping column 702 is pushed in the opposite direction by the elastic force of the compressed spring 706 to be firmly clamped in the limiting groove 703, so as to avoid the problem of the corrosion probe 5 being accidentally removed and disassembled. When the corrosion probe 5 needs to be removed and replaced, the joint column 11 is rotated in the opposite direction to make the clamping column 702 disengage from the L-shaped slide groove 701, so that the corrosion probe 5 can be removed. The clamping structure quickly completes the installation of the corrosion probe 5, and the coordinated use of multiple L-shaped slide grooves 701 and multiple clamping columns 702 with the same rotation direction further improves the installation stability of the corrosion probe 5; at the same time, the clamping column 702 is clamped in the limiting groove 703, and the limiting groove 703 limits the clamping column 702, which further improves the installation stability of the corrosion probe 5;

[0036] A rubber ring 705 is sleeved on the outside of the built-in plate 704, and slots 707 are opened at the centers of the connector seat 8 and the built-in plate 704, and the slots 707 on the connector seat 8 and the built-in plate 704 are coaxially arranged; the rubber ring 705 ensures a certain degree of sealing between the built-in plate 704 and the inner wall of the connector seat 8, and the arrangement of the wires is facilitated by the arranged slots 707.

[0037] The use of the utility model:

[0038] When in use, the connecting rod 1, the protective cover 2, the hollow plug 3 and the base 4 are assembled into one body, and the connecting gap between the hollow plug 3 and the base 4 is sealed by the provided sealing ring 6. The sealing ring 6 with a trapezoidal cross section allows the extrusion force between the hollow plug 3 and the base 4 to be transmitted more effectively, thereby reducing the extrusion force requirement of the sealing ring 6 to achieve good sealing. At the same time, the sealing ring 6 with a trapezoidal cross section has better elasticity, can adapt well to structural deformation, can better adapt to and fit the surface of the sealing component, improves the adaptability of the seal, achieves excellent sealing performance, effectively improves the sealing performance, and better prevents the medium from leaking. Leakage; when installing the corrosion probe 5, the connector column 11 is inserted into the connector seat 8 and rotated at a certain angle, so that the connector column 11 is fixed to the connector seat 8 through the clamping structure, thereby realizing the rapid installation of the corrosion probe 5. When the corrosion probe 5 needs to be removed and replaced, the corrosion probe 5 can be removed by rotating the connector column 11 in the opposite direction, thereby eliminating the need to manually rotate the thread continuously to install and disassemble the corrosion probe 5, simplifying the installation and disassembly operation, effectively improving the installation and replacement efficiency of the corrosion probe 5, and at the same time ensuring that the installation of the corrosion probe 5 is highly stable to avoid the problem of not rotating it into place.

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0041] The applicant declares that the above description is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by any person skilled in the art within the technical scope disclosed by the present utility model fall within the protection scope and the disclosure scope of the present utility model.

Claims

1. An erosion probe, comprising a hollow plug (3) and a base (4) sleeved inside and outside, one end of the hollow plug (3) is connected to a connecting rod (1), and the other end is connected to a joint seat (8); a protective cover (2) is sleeved outside one end of the base (4) close to the connecting rod (1); one end of the joint seat (8) is connected to a joint column (11), the free end of the joint column (11) is fixed with an erosion probe (5), and a sealing ring (6) is arranged between the hollow plug (3) and the base (4), characterized in that: The cross-section of the sealing ring (6) is trapezoidal; the joint seat (8) and the joint column (11) are inserted and connected through a clamping structure.

2. The corrosion probe according to claim 1, characterized in that: At least one cavity (9) is formed inside the sealing ring (6), and a metal spring piece (10) is arranged in the cavity (9). The longitudinal section of the metal spring piece (10) is in an X shape, and its upper and lower ends are fixed to the cavity wall of the cavity (9).

3. The corrosion probe according to claim 1, characterized in that: The clamping structure includes a receiving groove formed at the connecting end of the joint seat (8) and the joint column (11), at least one L-shaped sliding groove (701) formed on the groove wall of the receiving groove, and at least one clamping column (702) fixed on the outer wall of the joint column (11); the clamping column (702) is inserted into the L-shaped sliding groove (701).

4. The corrosion probe according to claim 3, characterized in that: When there are multiple L-shaped sliding grooves (701), the multiple L-shaped sliding grooves (701) are evenly distributed on the groove wall of the receiving groove with the same rotation direction.

5. The corrosion probe according to claim 3, characterized in that: The vertical section of the L-shaped sliding groove (701) is parallel to the axis of the receiving groove, and the free end of the vertical section is open. A limiting groove (703) is formed on one side of the end of the horizontal section of the L-shaped sliding groove (701) close to the corrosion probe (5), and the limiting groove (703) communicates with the L-shaped sliding groove (701).

6. The corrosion probe according to claim 1, characterized in that: The clamping structure further includes an inner plate (704) and a spring (706). The inner plate (704) is arranged on the end face of the connecting end of the joint column (11) and the joint seat (8), and both ends of the spring (706) are fixed to the inner plate (704) and the bottom of the receiving groove of the joint seat (8) respectively.

7. The corrosion probe according to claim 6, characterized in that: A rubber ring (705) is sleeved outside the inner plate (704), and slot holes (707) are formed at the centers of the joint seat (8) and the inner plate (704), and the slot holes (707) on the joint seat (8) and the inner plate (704) are coaxially arranged.

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