Optimized adjusting structure and method of petrochemical operation high-temperature adjusting valve

Abstract

The application relates to the technical field of petrochemical operation equipment, in particular to a petrochemical operation high-temperature regulating valve optimized regulating structure and method; the technical scheme is as follows: a petrochemical operation high-temperature regulating valve optimized regulating structure, which comprises a connecting rod, a valve rod, a cover plate and a cylinder section, one end of the connecting rod is rotationally connected with the valve rod, one end of the valve rod is provided with the cover plate, one side of the cover plate is provided with the cylinder section, and the cylinder section is rotationally connected with the cover plate; compared with the conventional petrochemical operation high-temperature regulating valve, the valve body and the valve rod of the regulating valve installed horizontally are prone to large deformation under a high-temperature environment, the acting force between the valve body and the valve rod is increased, the valve rod may be broken, the regulation is failed, the temperature of outlet process gas is increased, the petrochemical operation high-temperature regulating valve optimizes the mechanical structure of the high-temperature regulating valve, the regulating valve working under a high-temperature environment can be normally regulated under abnormal working conditions with over-standard temperature, and the reliability of safe operation of the high-temperature regulating valve is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of petrochemical operation equipment technology, and in particular to an optimized adjustment structure and method for a high-temperature regulating valve in petrochemical operations. Background Technology

[0002] In the petrochemical industry, as the process parameters of waste heat boilers continue to increase, these boilers need to operate under high temperature, high pressure, and high flow rate conditions. The harsh working environment dictates increasingly stringent structural requirements for waste heat boilers, among which the high temperature regulating valve plays a crucial role in the waste heat boiler system.

[0003] Existing high-temperature control valves in petrochemical operations are prone to significant deformation of the valve body and stem, especially horizontally installed control valves, under high-temperature environments. This increases the force between the valve body and stem, which may cause the stem to break, leading to control failure. Consequently, the outlet process gas temperature rises, which in severe cases may result in equipment damage, production interruption, leakage, or explosion, posing a significant threat and challenge to the safe operation of the plant.

[0004] Addressing the issue that existing high-temperature control valves in petrochemical operations are prone to significant deformation of the valve body and stem, especially those installed horizontally, under high-temperature conditions, this new high-temperature control valve optimizes the mechanical structure of the valve. This allows the valve to operate normally under abnormal conditions where the temperature exceeds the limit, preventing accidents such as plant shutdowns due to its own malfunctions, and effectively improving the reliability of the high-temperature control valve's safe operation. Summary of the Invention

[0005] To overcome the challenges posed by existing high-temperature control valves in petrochemical operations, especially horizontally installed control valves, which are prone to significant deformation of the valve body and stem under high-temperature conditions, the increased force between the valve body and stem may cause the stem to break, leading to control failure. This, in turn, can cause the outlet process gas temperature to rise, potentially resulting in equipment damage, production interruption, leakage, or explosion.

[0006] The technical solution of the present invention is as follows: an optimized regulating structure for a high-temperature regulating valve in petrochemical operations, comprising a connecting rod, a valve stem, a cover plate, and a cylindrical section. One end of the connecting rod is rotatably connected to the valve stem, one end of the valve stem is provided with a cover plate, and one side of the cover plate is provided with a cylindrical section, which is rotatably connected to the cover plate.

[0007] Preferably, the optimized adjustment structure is connected to the actuator via a connecting rod, the connecting rod and the cover plate are connected via a valve stem, and the cylinder section is sealed via the cover plate.

[0008] Preferably, the oblique cutting angle of the right side oblique cut surface of the cylinder section is °.

[0009] Preferably, the outer edge of the cover plate is larger than the intersection circle after the oblique cut of the cylindrical section.

[0010] An optimized regulation method for high-temperature regulating valves in petrochemical operations includes the following steps: S11: First, analyze the problems of high-temperature regulating valves in waste heat boilers in the petrochemical industry and determine optimization methods; S12: Optimization scheme for the mechanical structure; S13: Design the machining hole positions; S14: Design the hinge connection structure; S15: Design the oblique cutting angle; S16: Implement and evaluate the effects of multiple design schemes.

[0011] As a preferred approach, the following methods are included when analyzing the problem and determining the methodology: S21: Analyze the working environment and current technology of high-temperature regulating valves in waste heat boilers in the petrochemical industry; S22: Identify potential problems with high-temperature control valves under high temperature, high pressure, and high flow rate conditions, such as valve body and stem deformation, valve stem breakage, etc. S23: Define optimization goals, improve the reliability of high-temperature control valve operation, and avoid risks such as equipment damage and production interruption caused by control failure.

[0012] As a preferred option, the design of the mechanical structure optimization scheme includes the following steps: S31: Based on the existing valve actuator, design a scheme to extend the rear end of the central pipe; S32: Determine the extension length to ensure that the extended section can rise out of the fairing, enabling the mixing of hot and cold gases inside the fairing; S33: Design a flange connection structure between the extended section and the front end connection section to ensure a stable connection.

[0013] Preferably, the design of the machining hole positions includes the following steps: S41: A certain number of holes are machined on the outer circumference of the extended tube for the outflow of high-temperature gas; S42: Determine the aperture and quantity based on the specific calculations of the design institute.

[0014] Preferably, the design of the hinge connection structure includes the following steps: S51: Design the hinge connection structure between the central tube and the flap to ensure that the actuator can be reused; S52: A hinge connection structure is designed on the cover plate to connect the actuator and the central tube.

[0015] Preferably, the design of the bevel angle includes the following steps: S61: Determine the oblique cutting angle of the central tube to be 20° to ensure that the angle is reasonable without interference; S62: The outer diameter of the cover plate is designed according to the bevel angle to ensure that the cover plate can fit and seal with the extended central tube.

[0016] As a preferred approach, the implementation and effectiveness evaluation should include the following steps: S71: Implement the modification according to the design plan and install the optimized high-temperature regulating valve; S72: Conduct performance tests on the modified high-temperature control valve to evaluate its operational stability under high-temperature working conditions; S73: Collect operational data, compare the effects before and after the modification, and verify the feasibility and effectiveness of the optimization method.

[0017] The beneficial effects of this invention are: 1. Compared to traditional high-temperature control valves in petrochemical operations, valve bodies and stems of horizontally installed control valves are prone to significant deformation in high-temperature environments, which increases the force between the valve body and stem and may cause the stem to break, leading to control failure. This, in turn, increases the outlet process gas temperature, which may result in serious equipment damage, production interruption, leakage, explosion, etc., posing a significant threat and challenge to the safe operation of the plant. This high-temperature control valve for petrochemical operations optimizes the mechanical structure of the high-temperature control valve, enabling it to regulate normally under abnormal operating conditions where the temperature exceeds the limit, without causing plant shutdowns or other accidents due to its own failure, effectively improving the reliability of the safe operation of the high-temperature control valve. 2. By extending the rear end of the central tube and ensuring that the extended part can rise out of the fairing, the mixing of hot and cold gases inside the fairing is achieved, which effectively improves the flow state of high-temperature gases. At the same time, the bevel angle of the central tube is determined to be 20° to ensure that the angle is reasonable without interference. The outer circle size of the cover plate is designed according to the bevel angle to ensure that the cover plate can cooperate with the extended central tube for sealing, thereby improving the overall reliability and stability. Attached Figure Description

[0018] Figure 1 The diagram shown is a first three-dimensional structural schematic of an optimized regulating structure for a high-temperature regulating valve in petrochemical operations according to the present invention. Figure 2 The diagram shown is a second three-dimensional structural schematic of an optimized regulating structure for a high-temperature regulating valve in petrochemical operations according to the present invention. Figure 3 The diagram shown is a plan view of an optimized regulating structure for a high-temperature regulating valve in petrochemical operations according to the present invention. Figure 4 The diagram shown is a schematic diagram of the mechanical structure optimization design scheme of an optimized regulation method for a high-temperature regulating valve in petrochemical operations according to the present invention. Explanation of reference numerals in the attached diagram: 1. Connecting rod; 2. Valve stem; 3. Cover plate; 4. Cylindrical section; Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figures 1-3 The present invention provides an embodiment of an optimized regulating structure for a high-temperature regulating valve in petrochemical operations, comprising a connecting rod 1, a valve stem 2, a cover plate 3, and a cylindrical section 4. One end of the connecting rod 1 is rotatably connected to the valve stem 2, one end of the valve stem 2 is provided with the cover plate 3, and one side of the cover plate 3 is provided with the cylindrical section 4, which is rotatably connected to the cover plate 3.

[0021] Preferably, the optimized adjustment structure is connected to the actuator via the connecting rod 1, the connecting rod 1 and the cover plate 3 are connected via the valve stem 2, and the cylinder section 4 is sealed via the cover plate 3.

[0022] Preferably, the oblique cutting angle of the right side oblique cut surface of section 4 is 20°.

[0023] Preferably, the outer edge of the cover plate 3 is larger than the intersecting circle after the oblique cut of the cylindrical section 4.

[0024] Please see Figure 4 In this embodiment, an optimized regulation method for a high-temperature regulating valve in petrochemical operations includes the following methods: S11: First, analyze the problems of high-temperature regulating valves in waste heat boilers in the petrochemical industry and determine optimization methods; S12: Optimization scheme for the mechanical structure; S13: Design the machining hole positions; S14: Design the hinge connection structure; S15: Design the oblique cutting angle; S16: Implement and evaluate the effects of multiple design schemes.

[0025] As a preferred approach, the following methods are included when analyzing the problem and determining the methodology: S21: Analyze the working environment and current technology of high-temperature regulating valves in waste heat boilers in the petrochemical industry; S22: Identify potential problems with high-temperature control valves under high temperature, high pressure, and high flow rate conditions, such as valve body and stem deformation, valve stem breakage, etc. S23: Define optimization goals, improve the reliability of high-temperature control valve operation, and avoid risks such as equipment damage and production interruption caused by control failure.

[0026] As a preferred option, the design of the mechanical structure optimization scheme includes the following steps: S31: Based on the existing valve actuator, design a scheme to extend the rear end of the central pipe; S32: Determine the extension length to ensure that the extended section can rise out of the fairing, enabling the mixing of hot and cold gases inside the fairing; S33: Design a flange connection structure between the extended section and the front end connection section to ensure a stable connection.

[0027] Preferably, the design of the machining hole positions includes the following steps: S41: A certain number of holes are machined on the outer circumference of the extended tube for the outflow of high-temperature gas; S42: Determine the aperture and quantity based on the specific calculations of the design institute.

[0028] Preferably, the design of the hinge connection structure includes the following steps: S51: Design the hinge connection structure between the central tube and the flap to ensure that the actuator can be reused; S52: A hinge connection structure is designed on the cover plate to connect the actuator and the central tube.

[0029] Preferably, the design of the bevel angle includes the following steps: S61: Determine the oblique cutting angle of the central tube to be 20° to ensure that the angle is reasonable without interference; S62: The outer diameter of the cover plate is designed according to the bevel angle to ensure that the cover plate can fit and seal with the extended central tube.

[0030] As a preferred approach, the implementation and effectiveness evaluation should include the following steps: S71: Implement the modification according to the design plan and install the optimized high-temperature regulating valve; S72: Conduct performance tests on the modified high-temperature control valve to evaluate its operational stability under high-temperature working conditions; S73: Collect operational data, compare the effects before and after the modification, and verify the feasibility and effectiveness of the optimization method.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An optimized regulating structure for a high-temperature regulating valve in petrochemical operations; characterized in that: It includes a connecting rod (1), a valve stem (2), a cover plate (3) and a cylinder (4). One end of the connecting rod (1) is rotatably connected to the valve stem (2), and one end of the valve stem (2) is provided with a cover plate (3). One side of the cover plate (3) is provided with a cylinder (4), and the cylinder (4) is rotatably connected to the cover plate (3).

2. The optimized regulating structure of a high-temperature regulating valve for petrochemical operations according to claim 1, characterized in that: The oblique cutting angle of the right side of the cylindrical section (4) is 20°.

3. The optimized regulating structure of a high-temperature regulating valve for petrochemical operations according to claim 1, characterized in that: The outer edge of the cover plate (3) is larger than the intersecting circle after the oblique cut of the cylinder section (4).

4. An optimized regulating structure for a high-temperature regulating valve in petrochemical operations according to claims 1-3, characterized in that: An optimized regulation method for high-temperature regulating valves in petrochemical operations includes the following steps: S11: First, analyze the problems of high-temperature regulating valves in waste heat boilers in the petrochemical industry and determine optimization methods; S12: Optimization scheme for the mechanical structure; S13: Design the machining hole positions; S14: Design the hinge connection structure; S15: Design the oblique cutting angle; S16: Implement and evaluate the effects of multiple design schemes.

5. The optimized regulation method for a high-temperature regulating valve in petrochemical operations according to claim 4, characterized in that: When analyzing a problem and determining a method, the following methods are included: S21: Analyze the working environment and current technology of high-temperature regulating valves in waste heat boilers in the petrochemical industry; S22: Identify potential problems with high-temperature control valves under high temperature, high pressure, and high flow rate conditions, such as valve body and stem deformation, valve stem breakage, etc. S23: Define optimization goals, improve the reliability of high-temperature control valve operation, and avoid risks such as equipment damage and production interruption caused by control failure.

6. The optimized regulation method for a high-temperature regulating valve in petrochemical operations according to claim 4, characterized in that: The design of an optimized mechanical structure includes the following steps: S31: Based on the existing valve actuator, design a scheme to extend the rear end of the central pipe; S32: Determine the extension length to ensure that the extended section can rise out of the fairing, enabling the mixing of hot and cold gases inside the fairing; S33: Design a flange connection structure between the extended section and the front end connection section to ensure a stable connection.

7. The optimized regulation method for a high-temperature regulating valve in petrochemical operations according to claim 4, characterized in that: The design of machining hole positions includes the following steps: S41: A certain number of holes are machined on the outer circumference of the extended tube for the outflow of high-temperature gas; S42: Determine the aperture and quantity based on the specific calculations of the design institute.

8. The optimized regulation method for a high-temperature regulating valve in petrochemical operations according to claim 4, characterized in that: The design of hinge connection structures includes the following steps: S51: Design the hinge connection structure between the central tube and the flap to ensure that the actuator can be reused; S52: A hinge connection structure is designed on the cover plate to connect the actuator and the central tube.

9. The optimized regulation method for a high-temperature regulating valve in petrochemical operations according to claim 4, characterized in that: The design of the bevel angle includes the following steps: S61: Determine the oblique cutting angle of the central tube to be 20° to ensure that the angle is reasonable without interference; S62: The outer diameter of the cover plate is designed according to the bevel angle to ensure that the cover plate can fit and seal with the extended central tube.

10. The optimized regulation method for a high-temperature regulating valve in petrochemical operations according to claim 4, characterized in that: The design of the bevel angle includes the following steps: S61: Determine the oblique cutting angle of the central tube to be 20° to ensure that the angle is reasonable without interference; S62: The outer diameter of the cover plate is designed according to the bevel angle to ensure that the cover plate can fit and seal with the extended central tube.

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