Pipeline connecting structure

Abstract

The utility model provides a pipeline connecting structure, and belongs to the technical field of pipelines. The pipeline connecting structure comprises a pipeline I, the other end of the pipeline I corresponds to a pipeline II, a connecting device is fixedly installed between the pipeline I and the pipeline II, the connecting device is composed of an upper connecting mechanism, a lower connecting mechanism, a locking mechanism and a sealing mechanism, and the separated ends of the upper connecting mechanism and the lower connecting mechanism are fixedly connected with the opposite ends of the pipeline I and the pipeline II respectively. And the opposite ends of the upper connecting mechanism and the lower connecting mechanism are tightly attached to the two sides of the sealing mechanism and are in bolt connection with each other. Through the design of the upper connecting mechanism, the lower connecting mechanism, the locking mechanism and the sealing mechanism, the connecting strength of the pipeline connecting structure is greatly enhanced, complex loads in the deep sea mining operation process can be borne, and the risk of pipeline connection failure is reduced. And meanwhile, fluid leakage is effectively prevented, and the pipeline is convenient to mount and dismount.

Description

Technical Field

[0001] The present application relates to the field of pipeline technology, and in particular to a pipeline connection structure. Background Art

[0002] With the gradual depletion of land resources and the growing demand for resources, deep-sea mining has become an important direction for future resource development. Deep-sea mineral resources are rich, including polymetallic nodules, cobalt-rich crusts, hydrothermal sulfides, etc. The exploitation of these resources is of great significance to meet the needs of human society. As a key component connecting seabed resources with surface support vessels, the design and performance of deep-sea mining pipelines directly affect the efficiency, safety and economy of deep-sea mining.

[0003] Traditional deep-sea mining pipeline connection structures mostly use direct welding of pipes or use gaskets and bolt flange connections. This structure has certain limitations in the harsh deep-sea environment. First, the deep-sea mining pipeline connection structure needs to withstand complex and variable loads, which places extremely high demands on the connection strength. However, the connection structure of the prior art often has the problem of insufficient connection strength, which easily leads to failure of the pipeline connection; secondly, in the deep-sea environment, the sealing performance requirements of the pipeline connection structure are extremely high. However, the sealing structure of the prior art often has leakage risks and cannot meet the high requirements of deep-sea mining for sealing performance; in addition, in the deep-sea environment, the installation and maintenance of the pipeline connection structure are extremely difficult. Utility Model Content

[0004] In order to make up for the above deficiencies, the present application provides a pipeline connection structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model to solve its technical problems is:

[0006] A pipeline connection structure comprises a pipeline I, the other end of which corresponds to a pipeline II, a connecting device is fixedly installed between the pipeline I and the pipeline II, and the connecting device consists of an upper connecting mechanism, a lower connecting mechanism, a locking mechanism and a sealing mechanism. The separated ends of the upper connecting mechanism and the lower connecting mechanism are respectively fixedly connected to the opposite ends of the pipeline I and the pipeline II, and the locking mechanism is provided inside. The opposite ends of the upper connecting mechanism and the lower connecting mechanism are tightly fitted with the two sides of the sealing mechanism and are bolted to each other.

[0007] Furthermore, the upper connecting mechanism includes a flange I and a cylinder I, the inner ring of the flange I is fixedly connected to the outer wall of the cylinder I, and the outer wall is in contact with the sealing mechanism, and one end of the outer wall of the pipe I is fixedly connected to the interior of the cylinder I and extends to the interior of the lower connecting mechanism.

[0008] Furthermore, the lower connecting mechanism includes a flange II and a cylinder II, the inner ring of the flange II is fixedly connected to the outer wall of the cylinder II, and the outer wall is in contact with the sealing mechanism, one end of the inside of the cylinder II is fixedly connected to one end of the outer wall of the pipe II, and the other end is plugged with the pipe I.

[0009] Furthermore, the flange I and the cylinder I are integrally manufactured and molded, and the flange II and the cylinder II are also integrally manufactured and molded, and the flange I and the flange II are connected to each other by flanges.

[0010] Furthermore, the locking mechanism includes two locking blocks, two notches and a spiral groove. The opposite ends of the two locking blocks are fixedly connected to the two sides of the extension end of the pipe I respectively. Two notches corresponding to the two locking blocks are opened on both sides of the surface of the cylinder II, and the spiral groove is opened inside. The two notches are connected to the spiral groove, and the inside of the spiral groove is locked and connected to the two locking blocks.

[0011] Furthermore, the sealing mechanism includes a sealing ring and a sealing gasket, the outer ring of the sealing ring is fitted with the inner ring of the sealing gasket, the inner ring is inserted into the outer wall of the pipeline I, and the sealing ring and the outer wall of the sealing gasket are tightly fitted with the opposite ends of the flange I and the flange II on both sides.

[0012] Furthermore, the surface of the sealing gasket is provided with holes corresponding to the flange I and the flange II.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model greatly enhances the connection strength of the pipeline connection structure through the flange connection of the upper connection mechanism and the lower connection mechanism, and the locking connection between the locking block and the spiral groove in the locking mechanism. This design can withstand the complex loads in the deep-sea mining operation and reduce the risk of pipeline connection failure.

[0015] 2. The utility model effectively prevents fluid leakage by using a sealing ring and a sealing gasket in combination, thereby ensuring the safety of the pipeline system in a high-pressure and corrosive environment and ensuring the stability of mining operations.

[0016] 3. The pipeline connection structure of the utility model adopts a modular design, and each component is connected by bolts or locks, which is convenient for installation and disassembly. At the same time, the replacement of the sealing mechanism is relatively simple, which reduces the maintenance cost.

[0017] 4. The utility model adopts the design of cylinder I and cylinder II, and the mutual flange connection of flange I and flange II. This structure can better withstand cyclic loads and improve the fatigue life of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the pipeline connection structure provided in the embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of a connecting device provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the connection structure of the lower connection mechanism, the locking mechanism and the sealing mechanism provided in the embodiment of the present application;

[0022] Figure 4 A schematic diagram of the connection structure of the upper connection mechanism and pipeline I provided in the embodiment of the present application;

[0023] Figure 5 This is a schematic diagram of the exploded structure of the connection device provided in an embodiment of the present application.

[0024] In the figure: 1- pipeline I; 2- connecting device; 3- pipeline II; 21- upper connecting mechanism; 22- lower connecting mechanism; 23- locking mechanism; 24- sealing mechanism; 211- flange I; 212- cylinder I; 221- flange II; 222- cylinder II; 231- locking block; 232- notch; 233- spiral groove; 241- sealing ring; 242- sealing gasket. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0026] Example:

[0027] See also Figure 1 , Figure 3 , Figure 4 A pipeline connection structure includes pipeline Ⅰ1, and the other end of pipeline Ⅰ1 corresponds to pipeline Ⅱ3. The original design of pipeline Ⅰ1 and pipeline Ⅱ3 is to undertake the transportation task in deep-sea mining operations, and to transport the mineral resources on the seabed to the sea surface efficiently and safely. By adopting pipelines made of fatigue-resistant, pressure-resistant and hard materials, this pipeline can extend its service life in harsh deep-sea environments, reduce the frequency of replacement, and reduce long-term operating costs.

[0028] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A pipeline connection structure, a connecting device 2 is fixedly installed between pipeline Ⅰ1 and pipeline Ⅱ3, and the connecting device 2 consists of an upper connecting mechanism 21, a lower connecting mechanism 22, a locking mechanism 23 and a sealing mechanism 24; the upper connecting mechanism 21 includes a flange plate Ⅰ211 and a cylinder Ⅰ212; the lower connecting mechanism 22 includes a flange plate Ⅱ221 and a cylinder Ⅱ222; the locking mechanism 23 includes two locking blocks 231, two notches 232 and a spiral groove 233; the sealing mechanism 24 includes a sealing ring 241 and a sealing gasket 242.

[0029] Among them, the upper connection mechanism 21 is not only responsible for the fixation and sealing of the pipeline Ⅰ1, but also realizes precise docking with the lower connection mechanism 22 through its structural design, ensuring the stability and reliability of the entire pipeline connection structure. Flange Ⅰ211 is the main load-bearing component of the upper connection mechanism 21. Its inner ring is fixedly connected to the outer wall of cylinder Ⅰ212 to ensure the close combination of the two. Cylinder Ⅰ212 is used for welding with pipeline Ⅰ1. Considering the extreme conditions of the deep-sea environment such as high pressure and low temperature, the materials selected for flange Ⅰ211 and cylinder Ⅰ212 should have high strength, corrosion resistance and other characteristics to ensure the stability and durability of the upper connection mechanism 21 in the deep-sea environment.

[0030] Among them, the main function of the lower connecting mechanism 22 is to fix the pipeline Ⅱ3, and through the use of the upper connecting mechanism 21, the connection and stability of pipeline Ⅰ1 and pipeline Ⅱ3 are achieved, which ensures the continuity and safety of material transportation in deep-sea mining operations. Flange Ⅱ221 is the main load-bearing component of the lower connecting mechanism 22. Its inner ring is fixed and welded to the outer wall of cylinder Ⅱ222 through precision technology, ensuring the tightness and stability of the two. Cylinder Ⅱ222 is used to fix pipeline Ⅱ3. Considering the particularity of the deep-sea environment, the material selection of flange Ⅱ221 and cylinder Ⅱ222 should have the characteristics of high strength and corrosion resistance to cope with the challenges of high pressure, low temperature, high salinity and other challenges in the deep-sea environment.

[0031] Among them, flange I 211 and cylinder I 212 are integrally formed by advanced casting or forging technology, ensuring the structural strength and stability of both. This design eliminates the connection gap that may exist in the traditional connection method and improves the overall sealing and durability. Similarly, flange II 221 and cylinder II 222 are also integrally formed to ensure the strength and sealing of the connection mechanism 22.

[0032] The flange I 211 and the flange II 221 are connected by a flange connection method. Flange connection is a standard connection method widely used in industrial pipeline connection, which has the advantages of simple structure, good sealing, and easy disassembly.

[0033] Among them, through the design of integral molding and flange connection, the connection between the upper connecting mechanism 21 and the lower connecting mechanism 22 is more stable and reliable. This design not only improves the overall strength of the pipeline connection structure, but also enhances the sealing, effectively preventing leakage problems that may occur in deep-sea environments. At the same time, this design also simplifies the installation and disassembly process and improves work efficiency. In deep-sea mining operations, this efficient pipeline connection structure can ensure the continuity and safety of material transportation and provide strong support for mining operations.

[0034] Among them, the locking mechanism 23 strengthens the stable connection between the pipe Ⅰ1 and the cylinder Ⅱ222 through the unique design of the locking block 231, the notch 232 and the spiral groove 233. This connection method not only has high strength and sealing, but also is simple, convenient and fast to operate. In deep-sea mining operations, the locking mechanism 23 can ensure the stability and reliability of the pipeline connection and provide a strong guarantee for material transportation. The shape and size of the locking block 231 need to be precisely designed according to the specifications of the pipe Ⅰ1 and the cylinder Ⅱ222 to ensure that they can fit tightly. On both sides of the surface of the cylinder Ⅱ222, two notches 232 corresponding to the two locking blocks 231 are opened. These notches 232 allow the locking block 231 to pass smoothly when inserted into the cylinder Ⅱ222 and enter the spiral groove 233 for locking. A spiral groove 233 is opened inside the cylinder Ⅱ222, and the spiral groove 233 is connected with the two notches 232. The design of the spiral groove 233 allows the locking block 231 to penetrate deeper along the groove during the rotation process, thereby achieving a tight and stable connection between the pipe I1 and the cylinder II 222.

[0035] Among them, the sealing mechanism 24 ensures the sealing of the pipeline connection through the double sealing structure of the sealing ring 241 and the sealing gasket 242. This design can effectively prevent the leakage of high-pressure liquid or gas in the deep-sea environment and ensure the continuity and safety of material transportation. At the same time, the material selection and installation operation of the sealing mechanism 24 also fully consider the particularity of the deep-sea environment, ensuring its stability and reliability under extreme conditions. The design of the sealing ring 241 and the sealing gasket 242 must take into account the elasticity and corrosion resistance of the material. The outer ring of the sealing ring 241 fits tightly with the inner ring of the sealing gasket 242 to form a continuous sealing surface.

[0036] The sealing gasket 242 is provided with holes corresponding to the flange I 211 and the flange II 221, so that the sealing gasket 242 can be accurately aligned and fixed with the flange during installation. This design not only improves the convenience and accuracy of installation, but also helps to enhance the stability and sealing performance of the entire sealing mechanism.

[0037] The working principle of the pipeline connection structure: during installation, firstly, the pipeline I1 and the pipeline II3 are fixed and welded to the upper connection mechanism 21 and the lower connection mechanism 22 respectively. Then, the outer walls of the sealing ring 241 and the sealing gasket 242 are respectively fitted with the opposite ends of the flange I 211 and the flange II 221 to form an effective seal. When the upper connection mechanism 21 and the lower connection mechanism 22 are aligned, the locking block 231 is inserted into the notch 232 on both sides of the cylinder II 222, and the locking connection with the locking block 231 through the spiral groove 233 provides additional safety and stability to prevent the pipeline from accidentally falling off during operation. Then, the flange I 211 and the flange II 221 are connected to each other by bolts, and at the same time, the sealing mechanism 24 is ensured to fit tightly to achieve effective sealing.

[0038] It should be noted that the specific models and specifications of the locking block 231, the sealing ring 241, and the sealing gasket 242 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0039] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A pipeline connection structure, comprising a pipeline I (1), wherein the other end of the pipeline I (1) corresponds to a pipeline II (3), characterized in that: A connecting device (2) is fixedly installed between the pipeline I (1) and the pipeline II (3), and the connecting device (2) is composed of an upper connecting mechanism (21), a lower connecting mechanism (22), a locking mechanism (23) and a sealing mechanism (24). The separated ends of the upper connecting mechanism (21) and the lower connecting mechanism (22) are fixedly connected to the opposite ends of the pipeline I (1) and the pipeline II (3), respectively, and the locking mechanism (23) is provided inside. The opposite ends of the upper connecting mechanism (21) and the lower connecting mechanism (22) are tightly fitted to the two sides of the sealing mechanism (24) and are bolted to each other.

2. A pipeline connection structure according to claim 1, characterized in that: The upper connection mechanism (21) comprises a flange I (211) and a cylinder I (212); the inner ring of the flange I (211) is fixedly connected to the outer wall of the cylinder I (212), and the outer wall is in contact with the sealing mechanism (24); one end of the outer wall of the pipeline I (1) is fixedly connected to the inside of the cylinder I (212) and extends to the inside of the lower connection mechanism (22).

3. A pipeline connection structure according to claim 2, characterized in that: The lower connection mechanism (22) comprises a flange II (221) and a cylinder II (222), wherein the inner ring of the flange II (221) is fixedly connected to the outer wall of the cylinder II (222), and the outer wall is in contact with the sealing mechanism (24); one end of the interior of the cylinder II (222) is fixedly connected to one end of the outer wall of the pipe II (3), and the other end is plugged with the pipe I (1).

4. A pipeline connection structure according to claim 3, characterized in that: The flange plate I (211) and the cylinder plate I (212) are integrally manufactured and molded, and the flange plate II (221) and the cylinder plate II (222) are also integrally manufactured and molded, and the flange plate I (211) and the flange plate II (221) are flange-connected to each other.

5. A pipeline connection structure according to claim 4, characterized in that: The locking mechanism (23) comprises two locking blocks (231), two notches (232) and a spiral groove (233); the opposite ends of the two locking blocks (231) are respectively fixedly connected to the two sides of the extension end of the pipe I (1); the two notches (232) corresponding to the two locking blocks (231) are formed on the two sides of the surface of the cylinder II (222); the spiral groove (233) is formed inside; the two notches (232) and the spiral groove (233) are communicated with each other; the inside of the spiral groove (233) is locked and connected to the two locking blocks (231).

6. A pipeline connection structure according to claim 5, characterized in that: The sealing mechanism (24) comprises a sealing ring (241) and a sealing gasket (242); the outer ring of the sealing ring (241) fits with the inner ring of the sealing gasket (242); the inner ring is plugged into the outer wall of the pipeline I (1); the outer walls of the sealing ring (241) and the sealing gasket (242) are tightly fitted to the opposite ends of the flange I (211) and the flange II (221) respectively.

7. A pipeline connection structure according to claim 6, characterized in that: The sealing gasket (242) has holes on its surface corresponding to the flange I (211) and the flange II (221).

Images