A jacket sealing ring and its precision forming method and device, and a jacket equipment

Abstract

The application discloses a jacket sealing ring and a precision forming method and device thereof and a jacket device, wherein the method comprises the following steps: S1, an N06617 alloy steel pipe is equally divided along an axial direction to obtain a steel pipe piece; S2, the steel pipe piece is segmented and bent along a length direction to make an arc meet a design curvature requirement of the jacket sealing ring, and a jacket sealing ring piece is obtained; S3, the jacket sealing ring piece is spliced at two ends to form a sealing ring blank; S4, the sealing ring blank after splicing is fixed, and a splicing seam is welded; and S5, the sealing ring blank after welding is clamped on a lathe as a whole, and a remaining amount is removed and a welding bevel is prepared, so that a finished product of the jacket sealing ring meeting a design size and precision requirement is obtained. The application can realize high-precision forming of the N06617 alloy jacket sealing ring under normal temperature conditions, and guarantee size precision, material performance and assembly and welding quality after forming.

Description

Technical Field

[0001] This invention belongs to the field of pressure vessel technology, specifically relating to a jacket sealing ring and its precision forming method and apparatus, as well as a jacketing device. Background Technology

[0002] Jacketed equipment is a common type of chemical equipment, widely used in industries such as nuclear power, photovoltaics, oil refining, chemicals, and coal chemicals. The working principle of jacketed equipment is as follows: a jacket space is set outside the main body of the equipment. By introducing a heating or cooling medium (such as steam, hot water, cold water, or heat transfer oil) into the jacket space, the materials inside the equipment are heated or cooled to the required temperature for process production through heat exchange. At the same time, the jacket also serves as insulation, reducing heat or cold loss within the equipment and improving energy efficiency.

[0003] Jacketed equipment mainly consists of an inner cylinder, a jacket cylinder, and a jacket sealing ring. The jacket sealing ring seals both ends of the inner cylinder and the jacket cylinder, forming a complete jacketed container. The jacket sealing ring is typically elliptical, spherical, or disc-shaped, and is welded to the inner cylinder and jacket cylinder. The forming quality of the jacket sealing ring is a key factor affecting the assembly accuracy of the jacketed equipment. Poor forming quality will lead to difficulties in assembling the jacket sealing ring with the jacket cylinder, thus affecting the subsequent welding quality and the overall performance of the equipment.

[0004] In the field of spent nuclear fuel reprocessing, the jacket sealing rings of key equipment are formed from N06617 alloy. N06617 alloy is a nickel-based superalloy, and its forming and processing presents the following technical challenges:

[0005] 1) The hot working temperature range is relatively narrow. The starting temperature for hot working of N06617 alloy is generally between 1050 and 1100℃, while the ending temperature is usually not lower than 850℃. If the temperature is too high, it will easily lead to grain growth in the alloy, reducing the mechanical properties of the material; if the temperature is too low, the deformation resistance of the alloy will increase, increasing the difficulty of processing, and may even cause defects such as cracks.

[0006] 2) High deformation resistance. N06617 alloy exhibits high deformation resistance during both hot and cold working. Cold working requires large processing forces and multiple intermediate annealing processes to deform the material, significantly increasing processing costs and time.

[0007] 3) Prone to work hardening. N06617 alloy is prone to work hardening during processing. As the amount of deformation increases, the hardness and strength increase significantly, while the plasticity and toughness decrease accordingly. This not only affects the accuracy of subsequent assembly, but may also lead to problems such as cracking during processing.

[0008] Traditional N06617 alloy forming, especially jacket sealing ring forming, generally employs a hot forming process on a steel plate in a mold. However, due to the reasons mentioned above, this process has at least the following shortcomings: it is difficult to guarantee the assembly accuracy after forming, it is difficult to control the material properties (such as grain size, mechanical properties, etc.), the processing cost is high and the efficiency is low, making it difficult to meet the stringent requirements for equipment quality and reliability in high-end fields such as spent nuclear fuel reprocessing. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art by providing a precision forming method and apparatus for a jacket sealing ring, which can achieve high-precision forming of N06617 alloy jacket sealing rings under room temperature conditions, ensuring the dimensional accuracy, material properties and assembly welding quality after forming; and also provides a jacket sealing ring formed by the above-described method or apparatus, as well as a jacket seal including the above-described jacket sealing ring.

[0010] The technical solution of the present invention to solve the above-mentioned technical problems is:

[0011] According to a first aspect of the present invention, a method for precision forming of a jacket sealing ring is provided, comprising:

[0012] S1, Pipe splitting: The N06617 alloy steel pipe is cut into two halves to obtain steel pipe halves;

[0013] S2, Segmented bending: The steel pipe segments are bent into shape so that their curvature meets the design curvature requirements of the jacket sealing ring, thus obtaining the segmented jacket sealing ring.

[0014] S3, splicing and assembly: the jacket sealing ring is split into two segments and spliced ​​at both ends to form a sealing ring blank;

[0015] S4, Joint Welding: Fix the spliced ​​sealing ring blank and weld the joint;

[0016] S5, Finishing: The welded sealing ring blank is machined to remove excess material and a welding bevel is prepared to obtain the finished jacketed sealing ring that meets the design dimensions and precision requirements.

[0017] Optionally, the N06617 alloy steel pipe is cut into two halves in an axial direction.

[0018] Optionally, the bending of the steel pipe segments is performed in sections along the length direction.

[0019] According to a second aspect of the present invention, a precision forming apparatus for a jacketed sealing ring is provided, comprising a planing machine, a pipe bending machine, an assembly machine, a welding machine, and a lathe, wherein:

[0020] The planing equipment is used to plan N06617 alloy steel pipe into two halves along the axial direction to obtain steel pipe halves.

[0021] The pipe bending machine is used to bend the steel pipe segments along the length direction to form a shape, so that the curvature meets the design curvature requirements of the jacket sealing ring, thus obtaining the segmented jacket sealing ring.

[0022] The assembly equipment is used to split the jacket sealing ring into two segments and splice them together to form a sealing ring blank.

[0023] The welding equipment is used to weld the seams of the assembled sealing ring blanks;

[0024] The lathe is used to process the welded sealing ring blank to remove excess material and prepare the welding bevel, so as to obtain the finished jacketed sealing ring that meets the design size and precision requirements.

[0025] Optionally, the assembly equipment includes an assembly platform, a clamping fixture, an axial adjustment fixture, and a radial adjustment fixture. The assembly platform is used to support the segments of the jacket sealing ring and provide an assembly reference plane to ensure the flatness of the assembled jacket sealing ring. The clamping fixture, located on the assembly platform, is used to clamp and fix the segments of the jacket sealing ring during the assembly process to prevent deformation in the radial and axial directions. The axial adjustment fixture, located on the assembly platform, is used to adjust the position of the segments of the jacket sealing ring along the axial direction to meet the roundness requirements. The radial adjustment fixture, located on the assembly platform, is used to adjust the position of the segments of the jacket sealing ring along the radial direction to meet the flatness requirements in the height direction.

[0026] Optionally, the clamping fixture includes an axial clamping plate and a radial clamping plate; the axial clamping plate is detachably connected to the assembly platform via a first fastener, and is used to clamp and fix the segmented jacket sealing ring from the axial direction; the radial clamping plate is detachably connected to the assembly platform via a second fastener, and is used to clamp and fix the segmented jacket sealing ring from the radial direction.

[0027] Optionally, the axial adjustment fixture includes an axial adjustment bolt, which is disposed on the axial pressure plate and abuts against the end face of the split segment of the jacket sealing ring along the axial direction.

[0028] Optionally, the radial adjustment fixture includes a radial adjustment bolt, which is disposed on the radial pressure plate and abuts against the outer and / or inner circumferential surfaces of the jacket sealing ring segments radially.

[0029] Optionally, the upper surface of the assembly platform is precision machined to ensure that its flatness meets the assembly accuracy requirements of the jacket sealing ring.

[0030] Optionally, the assembly platform and clamping fixture are both made of stainless steel plates.

[0031] According to a third aspect of the present invention, a jacket sealing ring is provided, which is formed by the method described above, and / or by the apparatus described above.

[0032] According to a fourth aspect of the present invention, a jacketed device is provided, comprising an inner cylinder, a jacket cylinder, and a sealing ring, wherein the sealing ring is a jacket sealing ring as described above.

[0033] The jacket sealing ring, its precision forming method and apparatus, and the jacketing equipment of the present invention have the following advantages compared with traditional processes:

[0034] (1) Solved the problem of narrow hot working temperature range: The conventional hot forming of N06617 steel plate was optimized to cold forming of N06617 steel pipe. By splitting the N06617 alloy steel pipe into two halves for bending, it can be bent at room temperature, eliminating the heating link in the traditional hot forming process of steel plate. It is no longer limited to the traditional hot forming method of steel plate, and overcomes the defects of narrow hot working temperature range of N06617 alloy (starting hot working temperature 1050~1100℃, ending temperature not lower than 850℃) and strict temperature control requirements. It avoids quality problems such as grain growth, mechanical property degradation or cracks caused by improper temperature control.

[0035] (2) Reduced deformation resistance and improved processing performance: The use of cold forming of steel pipes instead of traditional hot forming of steel plates effectively avoids the problem of large deformation resistance of N06617 alloy during hot and cold working, reduces processing force and equipment load, simplifies process flow, and reduces processing cost and time.

[0036] (3) Work hardening phenomenon was suppressed and material properties were guaranteed: By optimizing the molding method, the problem of work hardening, plasticity and toughness reduction of N06617 alloy during molding was solved, ensuring that the material hardness, strength, plasticity and toughness of the sealing ring after molding meet the use requirements of harsh working conditions such as nuclear power spent fuel reprocessing.

[0037] (4) Improved forming accuracy and assembly quality: Special tooling is used for splicing and fixing, and with the overall precision machining allowance and beveling of the lathe, the dimensional accuracy and form and position tolerance control level of the N06617 alloy jacket sealing ring after forming are significantly improved, the assembly difficulty of the sealing ring and the jacket cylinder is reduced, and the welding quality of the jacket sealing ring and the jacket ring seam is guaranteed.

[0038] (5) Improved overall safety of the jacketed equipment: The improved forming accuracy and material properties of the sealing ring ensured the assembly quality and structural integrity of the jacketed equipment, thereby guaranteeing the safety and reliability of the entire equipment during long-term operation.

[0039] (6) Wide range of applications: It can provide a brand-new process and device for forming sealing rings of jacket equipment using N06617 alloy in industries such as nuclear power, oil refining, chemical industry, coal chemical industry, salt chemical industry, and chlor-alkali chemical industry, and has good promotion and application value. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the precision forming device for the jacket sealing ring in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the jacket device in an embodiment of the present invention.

[0042] In the figure: 1-jacket sealing ring; 2-jacket cylinder; 3-inner cylinder; 4-assembly platform; 5-clamping fixture; 6-axial adjustment fixture; 7-radial adjustment fixture; 8-jacket sealing ring identification. Detailed Implementation

[0043] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0044] In the description of this invention, it should be noted that the terms "above" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience and simplification of the description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] It is understood that, without conflict, the various embodiments and features in the embodiments of the present invention can be combined with each other.

[0048] It is understood that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, while the parts unrelated to the present invention are not shown in the drawings.

[0049] The traditional N06617 alloy jacket sealing ring molding process suffers from problems such as difficulty in guaranteeing assembly accuracy and material properties after molding. This invention provides a precision molding method for jacket sealing rings, comprising:

[0050] S1, Pipe splitting: The N06617 alloy steel pipe is cut into two halves to obtain steel pipe halves;

[0051] S2, Segmented bending: The steel pipe segments are bent into shape so that their curvature meets the design curvature requirements of the jacket sealing ring, thus obtaining the segmented jacket sealing ring.

[0052] S3, splicing and assembly: the jacket sealing ring is split into two parts and spliced ​​at both ends to form a sealing ring blank;

[0053] S4, Joint Welding: Fix the spliced ​​sealing ring blank and weld the joint;

[0054] S5, Finishing: The welded sealing ring blank is machined to remove excess material and a welding bevel is prepared to obtain the finished jacketed sealing ring that meets the design dimensions and precision requirements.

[0055] Furthermore, the present invention also provides a precision forming apparatus for a jacket sealing ring, comprising a planing machine, a pipe bending machine, an assembly machine, a welding machine, and a lathe, wherein:

[0056] A planing device is used to plan N06617 alloy steel pipe into two halves to obtain steel pipe halves;

[0057] A pipe bending machine is used to bend steel pipe segments into shape so that their curvature meets the design curvature requirements of the jacket sealing ring, thus obtaining the segmented jacket sealing ring.

[0058] Assembly equipment is used to splice the two ends of the jacket sealing ring into segments to form a sealing ring blank.

[0059] Welding equipment is used to weld the seams of the assembled sealing ring blanks;

[0060] A lathe is used to process the welded sealing ring blank to remove excess material and prepare the welding bevel, so as to obtain the finished jacketed sealing ring that meets the design dimensions and accuracy requirements.

[0061] Furthermore, the present invention also provides a jacket sealing ring, which is formed by the method described above, and / or by the device described above.

[0062] Furthermore, the present invention also provides a jacketed device, including an inner cylinder, a jacketed cylinder, and a sealing ring, wherein the sealing ring is the jacketed sealing ring described above.

[0063] The precision forming method and apparatus for the jacket sealing ring of the present invention can achieve high-precision forming of N06617 alloy jacket sealing rings under room temperature conditions, ensuring dimensional accuracy, material properties, and assembly welding quality after forming, reducing processing difficulty and cost, and improving production efficiency. Because the jacket sealing ring and jacket equipment of the present invention are formed using the methods described above, and / or using the apparatus described above, the forming accuracy and material properties of the sealing ring are improved, ensuring assembly quality and structural integrity, thereby guaranteeing the safety and reliability of the entire equipment during long-term operation.

[0064] It should be noted that, in addition to being applicable to jacket sealing of N06617 alloy material, this invention can also be used for processing and forming jacket sealing of other materials, which will not be elaborated here.

[0065] Example 1

[0066] This embodiment discloses a precision forming method for a jacket sealing ring, including:

[0067] S1, Pipe splitting: Using a steel pipe saw, the N06617 alloy steel pipe is evenly split into two halves along the axial direction to obtain steel pipe halves.

[0068] S2, Segmented bending: On a pipe bending machine, the steel pipe segments are bent into shape so that their curvature meets the design curvature requirements of the jacket sealing ring, thus obtaining the segmented jacket sealing ring.

[0069] S3, splicing and assembly: On the assembly platform, special tooling is used to splice the two ends of the jacket sealing ring into two parts to form a sealing ring blank.

[0070] S4, Joint Welding: Special tooling is used to fix the spliced ​​sealing ring blank and weld the joint;

[0071] S5, Finishing: The welded sealing ring blank is clamped on a lathe, and the excess material (including the excess material in the height direction and the excess material in the inner diameter direction) is removed by machining and the welding bevel is prepared to obtain the finished jacket sealing ring that meets the design size and accuracy requirements.

[0072] Specifically, in step S1, the N06617 alloy steel pipe is cut into two halves by dividing it into two equal halves along the axial direction.

[0073] In step S3, the two halves of the jacket sealing ring are spliced ​​together to form a complete circular structure, which constitutes the sealing ring blank. This includes: using a clamping fixture to clamp the two halves of the jacket sealing ring, using an axial adjustment fixture to adjust the height of the jacket sealing ring, using a radial adjustment fixture to adjust the inner diameter of the jacket sealing ring, and splicing the two halves of the jacket sealing ring together to form a complete circular structure, i.e., the sealing ring blank.

[0074] In some embodiments, in step S1, the bending of the steel pipe segments is performed in segments along the length direction. Specifically, each steel pipe segment can be bent into two segments, but it is not limited to this; it can also be bent into three or four segments, etc., which will not be elaborated here.

[0075] The precision forming method for the jacket sealing ring in this embodiment has the following effects:

[0076] (1) Solved the problem of narrow hot working temperature range: The conventional hot forming of N06617 steel plate was optimized to cold forming of N06617 steel pipe. By splitting the N06617 alloy steel pipe into two halves for bending, it can be bent at room temperature, eliminating the heating link in the traditional hot forming process of steel plate. It is no longer limited to the traditional hot forming method of steel plate, and overcomes the defects of narrow hot working temperature range of N06617 alloy (starting hot working temperature 1050~1100℃, ending temperature not lower than 850℃) and strict temperature control requirements. It avoids quality problems such as grain growth, mechanical property degradation or cracks caused by improper temperature control.

[0077] (2) Reduced deformation resistance and improved processing performance: The use of cold forming of steel pipes instead of traditional hot forming of steel plates effectively avoids the problem of large deformation resistance of N06617 alloy during hot and cold working, reduces processing force and equipment load, simplifies process flow, and reduces processing cost and time.

[0078] (3) Work hardening phenomenon was suppressed and material properties were guaranteed: By optimizing the molding method, the problem of work hardening, plasticity and toughness reduction of N06617 alloy during molding was solved, ensuring that the material hardness, strength, plasticity and toughness of the sealing ring after molding meet the use requirements of harsh working conditions such as nuclear power spent fuel reprocessing.

[0079] (4) Improved forming accuracy and assembly quality: Special tooling is used for splicing and fixing, and with the overall precision machining allowance and beveling of the lathe, the dimensional accuracy and form and position tolerance control level of the N06617 alloy jacket sealing ring after forming are significantly improved, the assembly difficulty of the sealing ring and the jacket cylinder is reduced, and the welding quality of the jacket sealing ring and the jacket ring seam is guaranteed.

[0080] (5) Improved overall safety of the jacketed equipment: The improved forming accuracy and material properties of the sealing ring ensured the assembly quality and structural integrity of the jacketed equipment, thereby guaranteeing the safety and reliability of the entire equipment during long-term operation.

[0081] (6) Wide range of applications: It can provide a new process method for forming sealing rings of jacket equipment using N06617 alloy in industries such as nuclear power, oil refining, chemical industry, coal chemical industry, salt chemical industry, and chlor-alkali chemical industry, and has good promotion and application value.

[0082] Example 2

[0083] This embodiment discloses a precision forming apparatus for a jacketed sealing ring, used in the method described in Embodiment 1, comprising a planing machine, a pipe bending machine, an assembly machine, a welding machine, and a lathe, wherein:

[0084] The planing equipment can be a steel pipe saw, but is not limited to it, used to plan N06617 alloy steel pipe into two halves, preferably divided into two halves along the axial direction to obtain steel pipe halves;

[0085] A pipe bending machine is used to bend steel pipe segments into shape. It is preferable to bend the segments along the length direction so that the curvature meets the design curvature requirements of the jacket sealing ring, thus obtaining a segmented jacket sealing ring.

[0086] Assembly equipment is used to splice the two ends of the jacket sealing ring into segments to form a sealing ring blank.

[0087] Welding equipment is used to weld the seams of the assembled sealing ring blanks;

[0088] A lathe is used to process the welded sealing ring blank to remove excess material and prepare the welding bevel, so as to obtain the finished jacketed sealing ring that meets the design dimensions and accuracy requirements.

[0089] Specifically, the planing equipment can be a steel pipe saw, but is not limited to this. For example... Figure 1As shown, the assembly equipment includes an assembly platform 4, a clamping fixture 5, an axial adjustment fixture 6, and a radial adjustment fixture 7. The assembly platform 1 supports the jacket sealing ring segments 8 and provides an assembly reference plane to ensure the flatness of the assembled jacket sealing ring. The clamping fixture 5, located on the assembly platform 4, clamps and fixes the jacket sealing ring segments 8 during assembly to prevent radial and axial deformation. The axial adjustment fixture 6, located on the assembly platform 4, adjusts the position of the jacket sealing ring segments 8 axially to meet roundness requirements. The radial adjustment fixture 7, located on the assembly platform 4, adjusts the position of the jacket sealing ring segments 8 radially to meet flatness requirements in the height direction.

[0090] In some embodiments, the clamping fixture 5 includes an axial clamping plate and a radial clamping plate. The axial clamping plate is detachably connected to the assembly platform via a first fastener (such as a fastening bolt) and is used to clamp and fix the segments of the jacket sealing ring in the axial direction. The radial clamping plate is detachably connected to the assembly platform via a second fastener (such as a fastening bolt) and is used to clamp and fix the segments of the jacket sealing ring in the radial direction.

[0091] In some embodiments, the axial adjustment fixture 6 includes an axial adjustment bolt, which is disposed on the axial pressure plate and abuts against the end face of the sleeve sealing ring segment along the axial direction.

[0092] In some embodiments, the radial adjustment fixture 7 includes a radial adjustment bolt, which is disposed on the radial pressure plate and abuts against the outer and / or inner circumferential surfaces of the jacket sealing ring segments radially.

[0093] In some embodiments, the upper surface of the assembly platform 4 is precision machined to ensure that its flatness meets the assembly accuracy requirements of the jacket sealing ring.

[0094] In some implementations, the assembly platform 4 and the clamping fixture 5 are both made of stainless steel plates.

[0095] The precision forming device for the jacket sealing ring in this embodiment is used in the method described in Embodiment 1 and has the same effect, which will not be described in detail here.

[0096] Example 3

[0097] This embodiment discloses a jacket sealing ring, which is formed by the method described in Embodiment 1 and / or by the device described in Embodiment 2.

[0098] Specifically, this jacket sealing ring includes two jacket sealing ring segments 8. By splicing the two ends of the two jacket sealing ring segments 8, a complete jacket sealing ring is formed. Each jacket sealing ring segment 8 is a semi-ring structure formed by bending steel pipe segments along the length direction after being evenly cut along the axial direction from N06617 alloy steel pipe.

[0099] The jacket sealing ring of this embodiment is formed by the method described in Embodiment 1 and / or by the device described in Embodiment 2. Therefore, the forming accuracy and material properties of the sealing ring can be improved, the assembly quality and structural integrity can be ensured, and the safety and reliability of the entire equipment can be guaranteed during long-term operation.

[0100] Example 4

[0101] like Figure 2 As shown, this embodiment discloses a jacket sealing ring, including an inner cylinder 3, a jacket cylinder 2, and sealing rings disposed at both ends of the inner cylinder 3 and the jacket cylinder 2, and the sealing ring adopts the jacket sealing ring 1 described in embodiment 3.

[0102] The jacket device in this embodiment has the same effect as the jacket sealing ring described in embodiment 3, and will not be described in detail here.

[0103] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A precision forming method for a jacket sealing ring, characterized in that, include: S1, Pipe splitting: The N06617 alloy steel pipe is cut into two halves to obtain steel pipe halves; S2, Segmented bending: The steel pipe segments are bent into shape so that their curvature meets the design curvature requirements of the jacket sealing ring, thus obtaining the segmented jacket sealing ring. S3, splicing and assembly: the jacket sealing ring is split into two segments and spliced ​​at both ends to form a sealing ring blank; S4, Joint Welding: Fix the spliced ​​sealing ring blank and weld the joint; S5, Finishing: The welded sealing ring blank is machined to remove excess material and a welding bevel is prepared to obtain the finished jacketed sealing ring that meets the design dimensions and precision requirements.

2. The precision forming method for the jacket sealing ring according to claim 1, characterized in that, The process of cutting the N06617 alloy steel pipe into two halves involves dividing it into two equal halves along the axial direction.

3. The precision forming method for the jacket sealing ring according to claim 1, characterized in that, The bending of the steel pipe segments is performed in sections along the length direction.

4. A precision forming device for a jacket sealing ring, characterized in that, This includes slicing equipment, pipe bending machines, assembly equipment, welding equipment, and lathes; The planing equipment is used to plan N06617 alloy steel pipe into two halves to obtain steel pipe halves. The pipe bending machine is used to bend the steel pipe segments into shape so that their curvature meets the design curvature requirements of the jacket sealing ring, thereby obtaining the segmented jacket sealing ring. The assembly equipment is used to split the jacket sealing ring into two segments and splice them together to form a sealing ring blank. The welding equipment is used to weld the seams of the assembled sealing ring blanks; The lathe is used to process the welded sealing ring blank to remove excess material and prepare the welding bevel, so as to obtain the finished jacketed sealing ring that meets the design size and precision requirements.

5. The precision forming device for the jacket sealing ring according to claim 4, characterized in that, The assembly equipment includes an assembly platform, a clamping fixture, an axial adjustment fixture, and a radial adjustment fixture. The assembly platform is used to support the segmentation of the jacket sealing ring and provide an assembly reference plane to ensure the flatness of the jacket sealing ring after assembly. The clamping fixture is located on the assembly platform and is used to clamp and fix the jacket sealing ring segments during the assembly process to prevent deformation in the radial and axial directions. The axial adjustment fixture is provided on the assembly platform and is used to adjust the position of the jacket sealing ring segments along the axial direction to meet the roundness requirements. The radial adjustment fixture is located on the assembly platform and is used to adjust the position of the jacket sealing ring segments radially to meet the flatness requirements in the height direction.

6. The precision forming device for the jacket sealing ring according to claim 5, characterized in that, The clamping fixture includes an axial clamping plate and a radial clamping plate. The axial pressure plate is detachably connected to the assembly platform via a first fastener, and is used to press and fix the jacket sealing ring segments from the axial direction. The radial pressure plate is detachably connected to the assembly platform via a second fastener, and is used to press and fix the jacket sealing ring segments from the radial direction.

7. The precision forming device for the jacket sealing ring according to claim 6, characterized in that, The axial adjustment fixture includes axial adjustment bolts. The axial adjusting bolt is located on the axial pressure plate and abuts against the end face of the split segment of the jacket sealing ring along the axial direction.

8. The precision forming device for the jacket sealing ring according to claim 6, characterized in that, The radial adjustment fixture includes radial adjustment bolts. The radial adjusting bolt is located on the radial pressure plate and abuts against the outer and / or inner circumferential surfaces of the jacket sealing ring segments in the radial direction.

9. The precision forming apparatus for the jacket sealing ring according to any one of claims 4 to 8, characterized in that, The upper surface of the assembly platform is precision machined, and its flatness meets the assembly accuracy requirements of the jacket sealing ring.

10. The precision forming apparatus for the jacket sealing ring according to any one of claims 4 to 8, characterized in that, The assembly platform and clamping fixtures are both made of stainless steel plates.

11. A jacketed sealing ring, characterized in that, The material is processed and shaped using the method described in any one of claims 1 to 3, and / or using the apparatus described in any one of claims 4 to 10.

12. A jacketed device, comprising an inner cylinder, a jacketed cylinder, and a sealing ring, characterized in that, The sealing ring is the jacket sealing ring as described in claim 11.

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