A type of steel pipe

Abstract

This utility model relates to a steel pipe, including a hollow steel pipe body extending axially to the left and right, and a connector. The steel pipe body comprises a first steel pipe and a second steel pipe, with the connector located between the first and second steel pipes. One end of the connector is detachably connected to the first steel pipe, and the other end is detachably connected to the second steel pipe. The first and second steel pipes are of the same shape and size. This design provides a method for extending the service life of the entire stainless steel pipe by allowing for the replacement of the portion of the steel pipe at the site of localized corrosion.

Description

Technical Field

[0001] This utility model relates to steel pipes, and more particularly to a type of steel pipe. Background Technology

[0002] Austenitic steel pipe is a type of stainless steel pipe mainly composed of an austenitic structure. Austenite is a crystal structure in steel materials, which gives steel some unique performance characteristics. Austenitic steel is mainly obtained by adding alloying elements such as chromium and nickel to iron-carbon alloys. One of its most well-known characteristics is its good corrosion resistance. However, in environments containing chloride ions, they may suffer from localized corrosion. Chloride ions can penetrate the passivation film on the surface of stainless steel (a self-healing oxide layer, usually Cr2O3, which makes stainless steel corrosion resistant), causing the metal atoms in the local area to lose electrons and become ions that enter the solution, thus causing pitting corrosion.

[0003] Furthermore, if chloride ions are present in the seams, under deposits, or in the gaps under gaskets, crevice corrosion can easily occur, thereby affecting the service life and operational safety of the equipment. Usually, the only solution is to disassemble the corroded or corroded entire stainless steel pipe. How to achieve the continued use of locally corroded or corroded parts of the stainless steel pipe has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a steel pipe that allows for the disassembly and replacement of the portion of the steel pipe at the site of localized corrosion, thereby extending the service life of the entire stainless steel pipe.

[0005] To achieve the above objectives, the present invention provides the following technical solution: it includes a steel pipe body, which is hollow and extends axially in the left and right directions, and also includes a connector. The steel pipe body includes a first steel pipe and a second steel pipe. The connector is located between the first steel pipe and the second steel pipe. One end of the connector is detachably connected to the first steel pipe, and the other end is detachably connected to the second steel pipe. The first steel pipe and the second steel pipe have the same shape and size.

[0006] The present invention is further configured such that: the first steel pipe includes a connecting section, a mating section, and an installation groove located between the connecting section and the mating section; the connecting member is made of a material that is prone to deformation and includes an installation section for inserting the installation groove; the installation section is provided with a plurality of positioning protrusions protruding in the circumferential direction; and the connecting section is provided with positioning slots corresponding to each positioning protrusion.

[0007] The present invention is further configured such that: a first filter sleeve is detachably installed on the side of the connector near the first steel pipe; the first filter sleeve includes a limiting plate, the limiting plate is arranged in the form of a polygonal prism; the connector is provided with a limiting groove corresponding to the limiting plate; and a filter screen is detachably installed inside the first filter sleeve.

[0008] The present invention is further configured such that: the connecting section is provided with a positioning block facing the side close to the second steel pipe, the first filter sleeve is provided with a positioning groove corresponding to the positioning block, and the connecting member also includes a first abutting section that abuts against the side of the positioning block close to the second steel pipe.

[0009] The present invention is further configured such that the connector also includes a second contact section that abuts against the side of the positioning block away from the second steel pipe.

[0010] The present invention is further configured such that: the first filter sleeve is provided with a plurality of limiting blocks that slide radially onto the filter screen along the circumferential direction.

[0011] The present invention is further configured to include: a connecting rod fixedly connected to each limiting plug, a cooperating spring sleeved on each connecting rod and fixed at one end to the limiting plug, the first filter sleeve being provided with a sliding groove corresponding to each connecting rod, the other end of each cooperating spring being fixedly connected to the first filter sleeve, and a contact disc with a diameter larger than the sliding groove being provided at the top of each connecting rod.

[0012] By adopting the above technical solution, the steel pipe body is segmented and connected by connectors. This allows for the use of steel pipe bodies of the required length. If localized corrosion occurs, the corroded portion of the first or second steel pipe can be disassembled and replaced. The uncorroded portion of the steel pipe body can then continue to be used, reducing material waste and increasing the overall service life of the steel pipe body. Furthermore, since the first and second steel pipes are identical in shape and size, they can be used to replace the corroded portion of the steel pipe after localized corrosion, thus facilitating maintenance. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1This is an assembly drawing illustrating a specific embodiment of the present utility model;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a cross-sectional view of the present invention;

[0017] Figure 4 This is a cross-sectional view of the present invention under explosive conditions;

[0018] Figure 5 This is a cross-sectional view after the first filter sleeve is separated from the connector;

[0019] Figure 6 for Figure 3 A magnified view of A in the middle.

[0020] In the diagram: 1 - Steel pipe body;

[0021] 2-First steel pipe, 21-Connecting section, 211-Positioning block, 212-Positioning slot, 22-Matching section, 23-Mounting groove;

[0022] 3-Second steel pipe;

[0023] 4-Connector, 41-Installation section, 411-Positioning protrusion, 42-First filter sleeve, 421-Limiting plate, 422-Filter screen, 423-Positioning groove, 424-Limiting insert, 425-Sliding groove, 43-Limiting groove, 44-First contact section, 45-Second contact section;

[0024] 5-Connecting rod;

[0025] 6-Matching spring. Detailed Implementation

[0026] 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.

[0027] like Figures 1-6This utility model discloses a steel pipe, including a steel pipe body 1, which is hollow and extends axially in the left and right directions. It also includes a connector 4. The steel pipe body 1 comprises a first steel pipe 2 and a second steel pipe 3. The connector 4 is located between the first steel pipe 2 and the second steel pipe 3. One end of the connector 4 is detachably connected to the first steel pipe 2 by bolts, clips, or other means, and the other end is detachably connected to the second steel pipe 3 by bolts, clips, or other means. The first steel pipe 2 and the second steel pipe 3 are of the same shape and size. By segmenting the steel pipe body 1 and connecting it with the connector 4, it is possible to deploy a steel pipe body 1 of the required length. If localized corrosion occurs in the steel pipe body 1 during use, the corroded portion of the first steel pipe 2 or the second steel pipe 3 can be disassembled and replaced. A new first steel pipe 2 or second steel pipe 3 can then be installed, allowing the uncorroded portion of the steel pipe body 1 to continue to be used. This reduces material waste and extends the overall service life of the steel pipe body 1. Furthermore, since the first steel pipe 2 and the second steel pipe 3 are identical in shape and size, they can be used to replace the corroded portion of the steel pipe after localized corrosion occurs, thus facilitating maintenance.

[0028] The first steel pipe 2 includes a connecting section 21, a mating section 22, and an installation groove 23 located between the connecting section 21 and the mating section 22. The connector 4 is made of a material that is easily deformable, such as rubber, and includes an installation section 41 for inserting into the installation groove 23. Fluororubber is preferred, as it is resistant to acid corrosion and wear. The installation section 41 has several positioning protrusions 411 protruding circumferentially. The connecting section 21 has positioning slots 212 corresponding to each positioning protrusion 411. When the connector 4 is installed onto the first steel pipe 2, 1. through By bending the connector 4, which is made of a material that is prone to deformation, the installation section 41 can be inserted into the installation groove 23 of the first steel pipe 2. At this time, without the action of external force, the axial position of the connector 4 in the first steel pipe 2 is determined; 2. After the installation section 41 is inserted into the installation groove 23, the positioning protrusions 411 on the installation section 41 will enter the corresponding positioning slots 212, thereby preventing the first steel pipe 2 and the connector 4 from rotating relative to each other, and thus determining the radial position of the connector 4 in the first steel pipe 2.

[0029] The first filter sleeve 42 is detachably installed on the side of the connector 4 near the first steel pipe 2 via a snap-fit ​​or magnetic attraction. The first filter sleeve 42 includes a limiting plate 421, which is hexagonal prism in shape. The connector 4 is provided with a limiting groove 43 corresponding to the limiting plate 421. A filter screen 422 is detachably installed inside the first filter sleeve 42 via a snap-fit ​​or magnetic attraction. 1. Because the first filter sleeve 42 is detachably connected to the connector 4, when the first filter sleeve 42 is inserted into the first steel pipe 2, the polygonal prism-shaped limiting plate 421 enters the limiting groove 43 of the connector 4. At this time, the limiting plate 421 cannot rotate within the limiting groove 43. This prevents the first filter sleeve 42 from rotating within the connector 4, thus facilitating the assembly of both. 2. During the flow of fluid from the first steel pipe 2 towards the second steel pipe 3, if the fluid contains impurities, it will pass through the connector 4 before flowing into the second steel pipe 3 and be blocked by the filter screen 422 inside the first filter sleeve 42 within the connector 4, preventing it from flowing into the second steel pipe 3. After separating the first steel pipe 2 and the second steel pipe 3, the connector 4 can be removed, allowing the first filter sleeve 42 to be flushed and cleaned separately. Since the filter screen 422 is detachable from the first filter sleeve 42, the filter screen 422 can be removed from the first filter sleeve 42 for further thorough cleaning.

[0030] The connecting section 21 is provided with a positioning block 211 facing the side near the second steel pipe 3. The first filter sleeve 42 is provided with a positioning groove 423 corresponding to the positioning block 211. The connecting member 4 also includes a first abutting section 44 that abuts against the positioning block 211 facing the side near the second steel pipe 3. The cooperation between the positioning block 211 and the positioning groove 423 further improves the installation stability of the first filter sleeve 42 in the connecting member 4, and avoids the loosening of the components due to vibration or pressure changes. In addition, the setting of the first abutting section 44 enhances the sealing and connection stability between the connecting member 4 and the first steel pipe 2.

[0031] Preferably, the connector 4 further includes a second contact section 45 that abuts against the side of the positioning block 211 away from the second steel pipe 3. The setting of the second contact section 45 further enhances the fixing stability between the connector 4 and the steel pipe body 1, prevents axial displacement caused by external force or fluid impact, and thus reduces corrosion problems caused by relative movement of the connection parts.

[0032] Furthermore, the first filter sleeve 42 is provided with a plurality of limiting blocks 424 that are radially slidably installed on the filter screen 422. After the first filter sleeve 42 is removed from the first filter screen 422, a force is applied to each limiting block 424 away from the filter screen 422, thereby separating each limiting block 424 from the filter screen 422, which facilitates the removal of the filter screen 422 from the first filter sleeve 42. The limiting blocks 424 are slid into the filter screen 422 so that the filter screen 422 can be stably located in the first filter sleeve 42.

[0033] Preferably, the system also includes connecting rods 5 that are fixedly connected to each limiting insert 424 by means of integral molding or other methods, and cooperating springs 6 that are sleeved on each connecting rod 5 and fixed at one end to the limiting insert 424. The first filter sleeve 42 is provided with sliding grooves 425 corresponding to each connecting rod 5. The other end of each cooperating spring 6 is fixedly connected to the first filter sleeve 42. Each connecting rod 5 has a contact disc with a diameter larger than the sliding groove 425 at its top. Therefore, after the first filter sleeve 42 is removed from the connecting member 4, an upward force is applied to the contact disc to drive the connecting rod 5 to move upward. As the connecting rod 5 moves upward, it will drive the limiting insert 424 to move upward and squeeze. When the spring 6 between the connector 4 and the limiting block 424 is compressed, the limiting block 424 moves and separates from the filter screen 422, allowing the filter screen 422 to be removed from the first filter sleeve 42. When the filter screen 422 is inserted into the first filter sleeve 42, the force on the contact disc is released, allowing the connecting rod 5 to move and drive the limiting block 424 into the filter screen 422. The spring 6 returns to its original position. Since the elastic force of the spring 6 is directed towards the filter screen 422, the limiting block 424 will not separate from the filter screen 422 without external force, allowing the filter screen 422 to remain stably located in the first filter sleeve 42.

[0034] In addition, a sealing ring is provided at the connection between the connector 4 and the first steel pipe 2, and the number of sealing rings should not be limited to those mentioned above.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A steel pipe comprising a steel pipe body which is provided in a hollow shape and extends in an axial direction of left and right, characterized by: It also includes a connector. The steel pipe body includes a first steel pipe and a second steel pipe. The connector is located between the first steel pipe and the second steel pipe. One end of the connector is detachably connected to the first steel pipe and the other end is detachably connected to the second steel pipe. The first steel pipe and the second steel pipe have the same shape and size.

2. A steel pipe according to claim 1, characterized in that: The first steel pipe includes a connecting section, a mating section, and an installation groove located between the connecting section and the mating section. The connecting member is made of a material that is prone to deformation and includes an installation section for inserting the installation groove. The installation section has a plurality of positioning protrusions protruding in the circumferential direction, and the connecting section has a positioning slot corresponding to each positioning protrusion.

3. A steel pipe according to claim 2, characterized in that: The connector is detachably mounted with a first filter sleeve near the first steel pipe. The first filter sleeve includes a limiting plate, which is a polygonal prism. The connector is provided with a limiting groove corresponding to the limiting plate. A filter screen is detachably mounted inside the first filter sleeve.

4. A steel pipe according to claim 3, characterized in that: The connecting section is provided with a positioning block facing the side close to the second steel pipe, and the first filter sleeve is provided with a positioning groove corresponding to the positioning block. The connecting member also includes a first contact section that abuts against the side of the positioning block close to the second steel pipe.

5. A steel pipe according to claim 3, characterized in that: The connector also includes a second contact section that abuts against the side of the positioning block opposite to the second steel pipe.

6. A steel pipe according to claim 3, characterized in that: The first filter sleeve is provided with a plurality of limiting blocks that slide radially onto the filter screen along the circumferential direction.

7. A steel pipe according to claim 6, characterized in that: It also includes connecting rods fixedly connected to each limiting plug, and a cooperating spring sleeved on each connecting rod with one end fixed to the limiting plug. The first filter sleeve is provided with a sliding groove for each connecting rod. The other end of each cooperating spring is fixedly connected to the first filter sleeve. The top of each connecting rod is provided with a contact disc with a diameter larger than the sliding groove.

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