Corrosive medium cabin penetrating structure

Abstract

The utility model discloses a corrosive medium cabin penetrating structure which comprises a cabin penetrating connecting pipe and a penetrating hole formed in a container body. The cabin penetrating connecting pipe comprises an inner end, a threaded column, a sealing inclined face, a straight rod and an outer end. The container body is provided with a threaded hole, a body tool withdrawal groove, a first stepped hole and a second stepped hole. The threaded column of the cabin penetrating connecting pipe is connected with the threaded hole of the container body in a matched mode. The step position of the body tool withdrawal groove of the container body and the first step hole is a sharp corner, and the sealing slope of the cabin penetrating connecting pipe and the sharp corner position of the container body are extruded to form linear sealing; the straight rod of the cabin-penetrating connecting pipe penetrates through the second step hole of the container body; the outer end and the inner end of the cabin penetrating connecting pipe are used for being connected with an outer connecting pipe and an inner connecting pipe correspondingly. The whole cabin penetrating connecting pipe is made of corrosion-resistant materials. According to the utility model, only the cabin-penetrating connecting pipe material is replaced by the corrosion-resistant material, and the sealing part is sealed by the metal wire, so that the sealing reliability in a high-temperature environment is ensured, welding is not needed, and later maintenance and replacement are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure vessels, in particular to a corrosive medium cabin penetration structure. Background Art

[0002] In the field of ultra-high pressure vessels, the internal medium is often corrosive, such as CO2, and the internal medium needs to be introduced into the internal equipment of the ultra-high pressure vessel through the cabin. There are currently two common cabin penetration solutions, such as Figure 1-1 As shown, one method is to open a through hole on the ultra-high pressure container body 101, and screw the sealing joint 102 into the through hole by means of threads or steps, and then insert the corrosion-resistant air pipe into the sealing joint 102. However, this method will cause the corrosive gas to contact the ultra-high pressure container body 103 between the two sealing joints 102, so the ultra-high pressure container can only be replaced with corrosion-resistant materials as a whole. This method will cause a significant increase in equipment costs. Due to the parameters of the ultra-high pressure container itself, there is basically no space for connecting pipes inside, so the sealing joint is generally not set through the container body, and because the installation of the sealing joint generally requires 2 external nuts and 2 threaded compression rings, the screw-in length of the nut is basically the same as the thickness of the container body, and the installation is more difficult. Figure 1-2 As shown, the other method is to weld a through-cabin pipe 201 made of corrosion-resistant material on the cylinder, but welding is not allowed in the "Ultra-High Pressure Vessel" standard (GB / T34019-2017), so this method cannot be used on ultra-high pressure vessels; in addition, if the welded pipe is damaged at the interface and cannot be sealed, it is difficult to repair. Chinese patent CN118030844A discloses a high-water pressure through-cabin sealing device for submarine cables, including a sealing cone sleeve, a sealing sleeve and a heat shrink sleeve, which needs to cooperate with the compression deformation of the elastic ring to achieve the sealing of the structure. However, the interior of the ultra-high pressure vessel targeted by this patent is generally a high-temperature environment, and high temperature will cause the sealing ring to fail. Conventional fluororubber with good temperature resistance cannot withstand a high temperature of 250°C (unstable), and silicone rubber has good temperature resistance, but its material is relatively soft and cannot withstand high pressure. Therefore, the sealing method with a sealing ring is not suitable for the sealing of high-temperature ultra-high pressure vessels. In addition, the through-cabin sealing device of this patent has a very complex structure, and it is difficult to install and maintain. Utility Model Content

[0003] The main purpose of the utility model is to provide a corrosive medium cabin penetration structure, in which only the cabin penetration pipe material is replaced with a corrosion-resistant material and no welding is required. The sealing part is a metal wire seal, which ensures the reliability of the seal in a high temperature environment.

[0004] The technical solution adopted by the utility model is:

[0005] A corrosive medium tank penetration structure, comprising a tank penetration pipe and a through hole opened on a container body and adapted to the tank penetration pipe; the tank penetration pipe comprises an inner end, a threaded column, a sealing bevel, a straight rod and an outer end arranged in sequence along the axial direction; a threaded hole, a body back-cut groove, a first step hole and a second step hole are opened in sequence on the container body from inside the cabin to outside the cabin; the threaded column of the tank penetration pipe is adaptively connected to the threaded hole of the container body; the body back-cut groove of the container body and the step of the first step hole are sharp angles, and the sealing bevel of the tank penetration pipe and the sharp angle of the container body are squeezed to form a line seal; the straight rod of the tank penetration pipe passes through the second step hole of the container body; the outer end of the tank penetration pipe is used to connect the external pipe; the inner end of the tank penetration pipe is used to connect the internal pipe; the tank penetration pipe is made of corrosion-resistant metal material as a whole, and the hardness of the tank penetration pipe is less than the hardness of the container body.

[0006] The above scheme also includes a clamping nut; the straight rod of the through-tank pipe is provided with an external thread at one end outside the container for installing the clamping nut; the clamping nut is installed at the connection between the outer wall of the container body and the straight rod.

[0007] In the above solution, the angle between the sealing slope of the through-tank pipe and the axial direction is 59°.

[0008] In the above solution, the external end of the tank penetration pipe is a conical end, and the angle between the conical surface of the conical end and the axial direction is 59°.

[0009] In the above scheme, the inside of the through-tank pipe is provided with a pipe threaded hole, an inner hole backing groove, a tapered hole and a medium through hole in sequence along the axial direction from inside the cabin to outside the cabin. The pipe threaded hole is used to dock with the thread of the internal pipe, and the inner hole backing groove allows the thread to be screwed to the bottom. The angle between the conical surface of the tapered hole and the axial direction is 60°, which is used for extrusion deformation to form a linear seal, and the medium through hole is used to circulate corrosion-resistant media.

[0010] In the above scheme, a pipe retreat groove is provided between the inner end of the through-cabin pipe and the threaded column.

[0011] In the above scheme, the inner end of the through-tank pipe is an external hexagonal end, and the external hexagonal end is a tooling position that can be matched with a wrench for tightening the through-tank pipe.

[0012] In the above scheme, the diameter of the body backing groove of the container body is larger than the diameter of the threaded hole, the diameter of the first step hole is smaller than the diameter of the threaded hole, and the diameter of the second step hole is smaller than the diameter of the first step hole.

[0013] In the above scheme, the stepped portions of the threaded hole of the container body and the body backing groove, as well as the stepped portions of the first step hole and the second step hole are all rounded.

[0014] The installation method of the above-mentioned corrosive medium penetration structure comprises:

[0015] S1. Pass the through-tank pipe through the second step hole of the container body until the threaded column of the through-tank pipe contacts the threaded hole of the container body;

[0016] S2. Screw the threaded column of the through-tank pipe into the threaded hole of the container body by using a wrench, and squeeze the sealing bevel of the through-tank pipe and the sharp corner of the container body to deform it by screwing the thread into the container body;

[0017] S3. The outer end of the container body is tightened with a compression nut and the external thread of the through-tank pipe straight rod to complete the installation.

[0018] The beneficial effects of the utility model are:

[0019] 1. In the corrosive medium penetration structure of the utility model, only the penetration pipe material is replaced with a corrosion-resistant metal material, and there is no need to replace the material of the entire container, which saves costs; the penetration pipe is integrally formed with a corrosion-resistant metal material, and the sealing part is a metal wire seal, which ensures the reliability of the seal in a high temperature environment, and the entire penetration structure has fewer components, a simple structure, and is easy to install and disassemble.

[0020] 2. The corrosive medium penetration structure of the utility model does not require welding and is not only suitable for ultra-high pressure containers, but also for all thick-walled containers.

[0021] 3. It is convenient for later maintenance and replacement. If the corrosive medium penetration structure cannot be sealed, the penetration pipe can be replaced or repaired as a whole, which is more flexible. And because the penetration pipe of the utility model is easy to install and disassemble, the difficulty of replacement is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1-1 It is a schematic diagram of the installation of the sealing joint in the traditional scheme;

[0024] Figure 1-2 This is a schematic diagram of the welding of the through-tank pipe in the traditional scheme;

[0025] Figure 2 It is a structural schematic diagram of the corrosive medium penetration structure of the utility model;

[0026] Figure 3 yes Figure 2A schematic diagram of the structure of the tank penetration nozzle of the corrosive medium tank penetration structure shown;

[0027] Figure 4 yes Figure 3 A magnified view of the structure at position I;

[0028] Figure 5 yes Figure 2 Schematic diagram of the perforation of the container body of the corrosive medium penetration structure shown.

[0029] In the figure: 10, through-tank pipe; 11, internal end; 12, pipe undercut groove; 13, threaded column; 14, sealing inclined surface; 15, straight rod; 16, external end; 171, pipe thread hole; 172, inner hole undercut groove; 173, tapered hole; 174, medium through hole;

[0030] 20. Container body; 21. Threaded hole; 22. Body backing groove; 23. First step hole; 24. Second step hole; 25. Sharp corner; 26. Rounded corner;

[0031] 30. Tighten the nut. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0033] It should be noted that the illustrations provided in the embodiments of the present invention are only used to illustrate the basic concept of the present invention in a schematic manner. Therefore, the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0034] In the present invention, it is also necessary to explain that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, if the terms "first" and "second" appear, they are only used for description and distinction purposes, and cannot be understood as indicating or implying relative importance.

[0035] like Figure 2As shown, a corrosive medium tank penetration structure provided by the utility model includes a tank penetration pipe 10 and a through hole opened on the container body 20 and adapted to the tank penetration pipe 10. Figure 3 As shown, the through-tank pipe 10 is a special-shaped pipe fitting, including an inner end 11, a threaded column 13, a sealing bevel 14, a straight rod 15 and an outer end 16 arranged in sequence along the axial direction. Figure 5 As shown, the container body 20 is provided with a threaded hole 21, a body backing groove 22, a first step hole 23 and a second step hole 24 in sequence from the inside to the outside of the cabin. Figure 2 , 3 5. The threaded column 13 of the through-tank pipe 10 is connected with the threaded hole 21 of the container body 20 through threaded adaptation. The body back cutter groove 22 can make the thread screw to the bottom; the step between the body back cutter groove 22 of the container body 20 and the first step hole 23 is a sharp angle 25. After the through-tank pipe 10 is installed into the container body 20 through threads, its sealing bevel 14 contacts the step sharp angle 25 of the container body 20 and is squeezed and deformed. This deformation makes the metal material fill the gap between the metals to complete the line seal. The straight rod 15 of the through-tank pipe 10 passes through the second step hole 24 of the container body 20; the external end 16 of the through-tank pipe 10 is used to connect the external pipe; the internal end 11 of the through-tank pipe 10 is used to connect the internal pipe. It should be noted that the through-tank pipe 10 is made of corrosion-resistant metal material as a whole; the hardness of the through-tank pipe 10 is less than that of the container body 20, so that it can be squeezed and deformed to form a line seal.

[0036] Further optimized, the corrosive medium penetration structure further includes a clamping nut 30; the end of the straight rod 15 of the penetration pipe 10 located outside the container is provided with an external thread for installing the clamping nut 30. Figure 2 The clamping nut 30 is installed at the connection between the outer wall of the container body 20 and the straight rod 15. By tightening the clamping nut 30, the cabin penetration pipe 10 can be effectively prevented from loosening.

[0037] According to further optimization, the angle between the sealing slope 14 of the through-tank pipe 10 and the axial direction is 59°.

[0038] Further optimized, the external end 16 of the through-tank pipe 10 is a conical end, and the angle between the conical surface of the conical end and the axial direction is 59°, which is used for installing the matching external pipe.

[0039] Further optimization, such as Figure 4 As shown, the interior of the through-tank pipe 10 is provided with a pipe threaded hole 171, an inner hole backing groove 172, a tapered hole 173 and a medium through hole 174 in sequence along the axial direction from inside the cabin to outside the cabin. The pipe threaded hole 171 is used for docking with the thread of the internal pipe, the inner hole backing groove 172 allows the thread to be screwed to the bottom, the tapered surface of the tapered hole 173 has an angle of 60° with the axial direction, which is used for extrusion deformation to form a linear seal, and the medium through hole 174 is used for circulating corrosion-resistant media.

[0040] It should be noted that the external end 16 and the internal end 11 of the tank penetration pipe 10 are not limited to the above-mentioned design shapes, but can be modified and matched according to actual needs.

[0041] For further optimization, a pipe retreat groove 12 is provided between the inner end 11 of the through-tank pipe 10 and the threaded column 13 , so that the threaded column 13 can be rotated to the root of the threaded hole 21 of the container body 20 .

[0042] Further optimized, the internal end 11 of the through-tank pipe 10 is an external hexagonal end, which is a tooling position and can be adapted to a wrench for tightening the through-tank pipe 10 .

[0043] For further optimization, see Figure 5 The diameter of the body backing groove 22 of the container body 20 is larger than the diameter of the threaded hole 21 , the diameter of the first step hole 23 is smaller than the diameter of the threaded hole 21 , and the diameter of the second step hole 24 is smaller than the diameter of the first step hole 23 .

[0044] According to further optimization, the stepped portions between the threaded hole 21 of the container body 20 and the body backing groove 22 , as well as the stepped portions between the first stepped hole 23 and the second stepped hole 24 are all rounded corners 26 .

[0045] The installation method of the above-mentioned corrosive medium penetration structure comprises:

[0046] S1. The through-tank pipe 10 passes through the second step hole 24 of the container body 20 until the through-tank pipe 10 threaded column 13 contacts the threaded hole 21 of the container body 20;

[0047] S2. The threaded column 13 of the through-tank pipe 10 is screwed into the threaded hole 21 of the container body 20 by a wrench, and the sealing bevel 14 of the through-tank pipe 10 and the sharp corner 25 of the container body 20 are squeezed and deformed by screwing the thread into the container body;

[0048] S3. The outer end of the container body 20 is fastened with the external thread of the through-chamber pipe 10 and the straight rod 15 by means of a compression nut 30 to complete the installation.

[0049] It can be seen that the installation method of the corrosive medium cabin penetration structure of the utility model is very simple and easy to replace.

[0050] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present utility model.

[0051] The order of execution of each step in the above embodiment does not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0052] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A corrosive medium penetration structure, characterized in that: It includes a tank penetration pipe and a through hole opened on the container body and adapted to the tank penetration pipe; the tank penetration pipe includes an internal end head, a threaded column, a sealing bevel, a straight rod and an external end head arranged in sequence along the axial direction; the container body is provided with a threaded hole, a body back-cut groove, a first step hole and a second step hole in sequence from inside the cabin to outside the cabin; the threaded column of the tank penetration pipe is adaptively connected with the threaded hole of the container body; the body back-cut groove of the container body and the step of the first step hole are sharp angles, and the sealing bevel of the tank penetration pipe and the sharp angle of the container body are squeezed to form a line seal; the straight rod of the tank penetration pipe passes through the second step hole of the container body; the external end head of the tank penetration pipe is used to connect the external pipe; the internal end head of the tank penetration pipe is used to connect the internal pipe; the tank penetration pipe is made of corrosion-resistant metal material as a whole, and the hardness of the tank penetration pipe is less than the hardness of the container body.

2. The corrosive medium penetration structure according to claim 1 is characterized in that: It also includes a clamping nut; an end of the straight rod of the through-tank pipe located outside the container is provided with an external thread for installing the clamping nut; the clamping nut is installed at the connection between the outer wall of the container body and the straight rod.

3. The corrosive medium penetration structure according to claim 1 is characterized in that: The included angle between the sealing inclined surface of the through-tank pipe and the axial direction is 59°.

4. The corrosive medium penetration structure according to claim 1 is characterized in that: The outer end of the tank penetration pipe is a conical end, and the angle between the conical surface of the conical end and the axial direction is 59°.

5. The corrosive medium penetration structure according to claim 1, characterized in that: The interior of the through-tank pipe is provided with a pipe threaded hole, an inner hole backcut groove, a tapered hole and a medium through hole in sequence along the axial direction from inside the cabin to outside the cabin. The pipe threaded hole is used to dock with the thread of the internal pipe, and the inner hole backcut groove allows the thread to be screwed to the bottom. The tapered surface of the tapered hole has an angle of 60° with the axial direction, which is used for extrusion deformation to form a linear seal, and the medium through hole is used to circulate corrosion-resistant media.

6. The corrosive medium penetration structure according to claim 1, characterized in that: A pipe retreat groove is provided between the inner end of the through-cabin pipe and the threaded column.

7. The corrosive medium penetration structure according to claim 1 is characterized in that: The inner end of the through-tank pipe is an external hexagonal end, which is a tooling position and can be matched with a wrench for tightening the through-tank pipe.

8. The corrosive medium penetration structure according to claim 1, characterized in that: The diameter of the body backing groove of the container body is larger than the diameter of the threaded hole, the diameter of the first step hole is smaller than the diameter of the threaded hole, and the diameter of the second step hole is smaller than the diameter of the first step hole.

9. The corrosive medium penetration structure according to claim 1, characterized in that: The threaded hole of the container body and the stepped portion of the body backcut groove, as well as the stepped portion of the first stepped hole and the second stepped hole are all rounded.

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