Low-temperature valve actuator capable of preheating
By installing a heating wire and a heat-conducting ring in the valve actuator to heat the lubricating oil, the problem of mechanical wear caused by lubricating oil solidification in low-temperature environments is solved, and the lubricating oil is effectively melted and the equipment is started smoothly.
Patent Information
- Application Number
- CN202423149203.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-19
AI Technical Summary
In low-temperature environments, the viscosity of the lubricating oil in valve actuators increases, leading to increased friction, wear of mechanical parts, difficulty in starting, and reduced equipment lifespan.
A heating wire and a heat-conducting ring are used to heat the lubricating oil. The heat is transferred through the drive screw and the linked turbine to melt the solidified lubricating oil and ensure that the lubricating oil participates in the mechanical transmission.
It avoids mechanical wear in low-temperature environments, simplifies the startup process, and improves the reliability and service life of the equipment.
Smart Images
Figure CN223549905U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aluminum alloy technology, and more specifically, it relates to a preheatable cryogenic valve actuator. Background Technology
[0002] A valve actuator is a device used to operate valves automatically, remotely, or manually. It controls the opening, closing, or adjustment of valve positions based on input signals (such as electrical, pneumatic, or hydraulic signals). Valve actuators are a key component in industrial automation and are widely used in various fields such as petroleum, chemical, natural gas, water treatment, food processing, pharmaceuticals, power, and heating systems. However, some valve actuators need to operate in low-temperature environments, and low temperatures can negatively impact their performance.
[0003] When valve actuators are used in low-temperature environments for extended periods, the viscosity of the lubricating oil increases significantly, and its fluidity decreases. This prevents the lubricating oil from forming an effective lubricating film between mechanical parts, leading to increased friction. Excessive friction can cause wear on mechanical parts, shortening the service life of the equipment. This situation becomes more pronounced after the valve actuator has been shut down for a period of time, making it difficult or impossible to start the valve actuator and increasing the risk of start-up failure.
[0004] Therefore, there is a need for a valve actuator that can be used in low-temperature environments. When the lubricating oil solidifies, it can be liquefied and participate in the mechanical drive of the valve actuator, thereby ensuring the normal operation of the valve actuator and avoiding unnecessary losses. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a preheatable cryogenic valve actuator.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] This utility model is further configured as follows: a preheatable cryogenic valve actuator, including a mounting assembly, a handle assembly disposed above the mounting assembly, a control assembly disposed in the middle of the mounting assembly, a drive assembly disposed inside the mounting assembly, a linkage assembly engaged with the output end of the drive assembly, the linkage assembly being installed inside the mounting assembly, a heating assembly disposed on one side of the output end of the drive assembly, the mounting assembly including a mounting body, a main body chamber disposed on the mounting body, a drive chamber laterally opened on the mounting body, a heating chamber also opened on the mounting body, a control module disposed above the heating chamber on the mounting body, the heating assembly including a positioning ring disposed in the heating chamber, a heating element disposed in the middle of the positioning ring, the heating element including a first heat-conducting ring and a second heat-conducting ring, a heating wire being arrayed between the first heat-conducting ring and the second heat-conducting ring.
[0008] The present invention is further configured such that: the handle assembly includes a handle turntable, a handle connecting block is installed below the handle turntable, and the handle connecting block is disposed above the main body chamber.
[0009] The present invention is further configured such that: the control component includes a control mounting base, a control top plate is mounted in the middle of the control mounting base, a control rod is rotatably mounted below the control top plate, and a turbine is mounted below the control top plate.
[0010] The present invention is further configured such that: a control spring is provided below the turbine, a connecting block is installed below the control spring, the control rod penetrates the connecting block, and the control spring is sleeved on the outside of the control rod.
[0011] The present invention is further configured such that: the driving assembly includes a driving motor, a driving fixing block is mounted on one side of the driving motor, and the driving fixing block is fixed on the driving chamber.
[0012] The present invention is further configured such that: a drive screw is installed at the output end of the drive motor, and a first limiting bearing is installed on the side of the drive screw away from the drive fixing block, and the first limiting bearing is fixed on the mounting body.
[0013] The present invention is further configured such that: the linkage assembly includes a connecting rod, a linkage turbine is installed on one side of the connecting rod, and a linkage worm gear is installed on the side of the linkage turbine away from the connecting rod.
[0014] The present invention is further configured such that the linkage worm gear penetrates the linkage turbine and is fixedly connected to the connecting rod.
[0015] The present invention is further configured such that: a linkage fixing block is provided at the middle position of the linkage turbine and the linkage worm gear, and a second limiting bearing is installed at the end of the linkage worm gear away from the linkage turbine, and the second limiting bearing is installed inside the mounting body.
[0016] The present invention is further configured such that: a linkage fixing block is provided at the middle position of the linkage turbine and the linkage worm gear, and the linkage fixing block is fixedly installed inside the mounting body.
[0017] By adopting the above technical solution, a heating wire is set to heat the actuator, and the first and second heat-conducting rings transfer heat to melt the lubricating oil that is about to solidify. After the lubricating oil melts, it drives the linkage turbine to rotate through the drive screw, thus achieving the effect of avoiding mechanical wear caused by direct start-up in low-temperature environments and facilitating secondary start-up.
[0018] In summary, this application includes at least one of the following beneficial technical effects:
[0019] 1. By setting a heating wire, the first and second heat-conducting rings transfer heat to melt the lubricating oil that is about to solidify. After the lubricating oil melts, it drives the linkage turbine to rotate through the drive screw, which achieves the effect of avoiding mechanical wear caused by direct start-up in low-temperature environments and facilitating secondary start-up. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of a preheatable cryogenic valve actuator according to the present invention.
[0021] Figure 2 This is an exploded structural diagram of a preheatable cryogenic valve actuator according to the present invention.
[0022] Figure 3 This is a schematic diagram of the overall structure of the handle assembly in this utility model.
[0023] Figure 4 This is a schematic diagram of the cooperative structure of the control component, drive component and linkage component in this utility model.
[0024] Figure 5 for Figure 4 A schematic diagram of the overall structure of the control component shown;
[0025] Figure 6 for Figure 4 The diagram shows the overall structure of the heating assembly.
[0026] Figure 7 for Figure 4 A schematic diagram of the overall structure of the linkage components shown;
[0027] Figure 8 for Figure 2 The diagram shows the overall structure of the heating assembly.
[0028] Figure 9 for Figure 8 A schematic diagram of the exploded structure of the heating assembly shown.
[0029] Figure 10 for Figure 9 The diagram shows the installation structure of the first heat-conducting ring and the heating wire.
[0030] Figure 11 for Figure 2 A schematic diagram of the overall structure of the installation components and control module shown;
[0031] Figure 12 for Figure 2 Another perspective;
[0032] Figure 13 for Figure 12 A schematic diagram of the cross-sectional structure along the AA direction;
[0033] Figure 14 for Figure 12 A schematic diagram of the cross-sectional structure along the BB direction.
[0034] Explanation of reference numerals in the attached drawings: 1. Handle assembly; 11. Handle dial; 12. Handle connecting block;
[0035] 2. Installation components; 21. Installation body; 22. Main body chamber; 23. Drive chamber; 24. Heating chamber;
[0036] 3. Control components; 31. Control top plate; 32. Turbine; 33. Control spring; 34. Connecting block; 35. Control rod; 36. Control mounting base;
[0037] 4. Drive assembly; 41. Drive motor; 42. Drive fixing block; 43. Drive screw; 44. First limit bearing;
[0038] 5. Linkage assembly; 51. Connecting rod; 52. Linkage fixing block; 53. Linkage worm gear; 54. Linkage worm; 55. Second limit bearing;
[0039] 6. Heating assembly; 61. Positioning ring; 62. Heating component; 621. First heat-conducting ring; 622. Second heat-conducting ring; 623. Heating wire;
[0040] 7. Control module. Detailed Implementation
[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0042] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0043] Example 1, please refer to Figures 1-14 The present invention provides the following technical solution:
[0044] See Figure 1 A preheatable cryogenic valve actuator includes a mounting assembly 2. A handle assembly 1 is located above the mounting assembly 2. The handle assembly 1 is used to operate the cryogenic valve actuator mechanically in an emergency. A control assembly 3 is located in the middle of the mounting assembly 2. The handle assembly 1 can drive the control assembly 3 in an emergency, and can still force the valve actuator to run without using electric drive. A drive assembly 4 is also located inside the mounting assembly 2. The drive assembly 4 is used to automatically drive the valve actuator according to an electrical signal. A linkage assembly 5 is engaged at the output end of the drive assembly 4. The linkage assembly 5 can transmit the driving force of the drive assembly 4 to the control assembly 3. The linkage assembly 5 is installed inside the mounting assembly 2. A heating assembly 6 is installed on one side of the output end of the drive assembly 4. The heating assembly 6 can heat the solidified lubricating oil when it solidifies, so as to avoid the drive part from generating large friction due to the solidified lubricating oil.
[0045] See Figure 3 The handle assembly 1 includes a handle connecting block 12, and a handle turntable 11 is rotatably mounted above the handle connecting block 12. The handle connecting block 12 is located above the main body chamber 22.
[0046] The handle turntable 11 facilitates better application of pressure to drive the control component 3 to rotate, and the handle connecting block 12 is used for fixed connection with the control component 3.
[0047] See Figure 11 The mounting component 2 includes a mounting body 21, a main body chamber 22 is provided on the mounting body 21, a drive chamber 23 is opened laterally on the mounting body 21, a heating chamber 24 is also opened on the mounting body 21, and a control module 7 is installed on the mounting body 21 above the heating chamber 24.
[0048] The mounting body 21 provides an installation environment for the components, preventing the infiltration of cold air and moisture in low-temperature environments. The main body chamber 22 is hollow at the top and bottom. The control component 3 is installed in the main body chamber 22, the drive component 4 is installed in the drive chamber 23, and the heating component 6 is installed in the heating chamber 24.
[0049] See Figure 5 The control assembly 3 includes a control mounting base 36, a control top plate 31 is mounted in the middle of the control mounting base 36, a control rod 35 is rotatably mounted below the control top plate 31, and a turbine 32 is mounted below the control top plate 31.
[0050] The control mounting base 36 is used to be fixedly installed on the main body chamber 22. The control top plate 31 is fixedly connected to the handle connecting block 12. The handle turntable 11 is fixedly connected to the control rod 35. When the handle turntable 11 rotates, it can drive the control rod 35 to rotate.
[0051] The turbine 32 is fixedly mounted on the control rod 35. A control spring 33 is provided below the turbine 32. A connecting block 34 is installed below the control spring 33. The control rod 35 passes through the connecting block 34, and the control spring 33 is sleeved on the outside of the control rod 35.
[0052] The control spring 33 is used for buffering, and the connecting block 34 is used for fixing and limiting. The connecting block 34 is installed at the lower end of the main body chamber 22. When the turbine 32 rotates, it can synchronously drive the control rod 35 to rotate.
[0053] See Figure 6 The drive assembly 4 includes a drive motor 41, and a drive fixing block 42 is mounted on one side of the drive motor 41. The drive fixing block 42 is fixed on the drive chamber 23.
[0054] A drive screw 43 is installed at the output end of the drive motor 41. A first limit bearing 44 is installed on the side of the drive screw 43 away from the drive fixing block 42. The first limit bearing 44 is fixed on the mounting body 21.
[0055] The drive motor 41 is fixed on the drive fixing block 42. When the output end of the drive motor 41 rotates, it drives the drive screw 43 to rotate. The inner ring of the first limit bearing 44 can rotate with the drive screw 43, and the outer ring of the first limit bearing 44 is fixed on the mounting body 21.
[0056] See Figure 7 The linkage component 5 includes a connecting rod 51, a linkage turbine 53 is installed on one side of the connecting rod 51, and a linkage worm gear 54 is installed on the side of the linkage turbine 53 away from the connecting rod 51.
[0057] The worm gear 54 passes through the worm gear 53 and is fixedly connected to the connecting rod 51.
[0058] A linkage fixing block 52 is provided at the middle position of the linkage turbine 53 and the linkage worm 54. A second limit bearing 55 is installed at the end of the linkage worm 54 away from the linkage turbine 53. The second limit bearing 55 is installed inside the mounting body 21.
[0059] A linkage fixing block 52 is provided at the middle position of the linkage turbine 53 and the linkage worm gear 54, and the linkage fixing block 52 is fixedly installed inside the mounting body 21.
[0060] The connecting rod 51 is used to install other components. When the drive screw 43 rotates, it can drive the linkage turbine 53 to rotate. When the linkage turbine 53 rotates, it drives the linkage worm 54 to rotate, which in turn drives the inner ring of the second limit bearing 55 to rotate. The linkage fixing block 52 is used to limit the installation position of the linkage worm 54.
[0061] See Figures 8 to 10 When controlling the heating component 6, a command needs to be sent to the control module 7. The control module 7 is used to send an execution signal to the heating component 6. The execution signal is executed by the hardware module. The hardware module is used to receive the command whether heating is required. If heating is required, the command is NO, and the heating wire 623 is energized. If heating needs to be stopped, the command is OFF, and the heating wire 623 is de-energized. The heating component 6 includes a positioning ring 61, which is installed in the heating chamber 24. A heating element 62 is installed in the middle of the positioning ring 61. The heating element 62 includes a first heat-conducting ring 621 and a second heat-conducting ring 622. A heating wire 623 is arranged in an array between the first heat-conducting ring 621 and the second heat-conducting ring 622. The control module 7 supplies current to the heating wire 623. After the heating wire 623 is energized, it begins to heat up.
[0062] A groove (not shown in the figure) is provided in the middle of the positioning ring 61. A heat insulation layer is provided at the part where the positioning ring 61 is fixed to the mounting body 21. The groove of the positioning ring 61 is spaced apart from the position of the mounting body 21. The positioning ring 61 is located close to the mating position of the drive screw 43 and the linkage turbine 53. The first heat-conducting ring 621 and the second heat-conducting ring 622 are both provided in the middle. A heating wire 623 is installed in the groove. The heat of the heating wire is led out through the first heat-conducting ring 621 and the second heat-conducting ring 622. The heat emitted by the first heat-conducting ring 621 and the second heat-conducting ring 622 heats the solidified lubricating oil on the drive screw 43 and the linkage turbine 53, so that the lubricating oil can participate in the transmission structure of the valve actuator. During the heating process, due to the distance of the groove position, the heat emitted by the heating component 62 is not directly transferred to the mounting body 21, avoiding the problem of local overheating.
[0063] By setting a heat insulation layer at the location where the positioning ring 61 is fixed to the mounting body 21, the heat emitted by the heating component 62 is not directly transferred to the mounting body 21, thus achieving the effect of avoiding local overheating.
[0064] See Figures 12 to 14When the cryogenic valve actuator operates in a -60°C environment, the drive motor 41 drives the drive screw 43 to rotate, the drive screw 43 drives the linkage turbine 53 to rotate, the linkage turbine drives the linkage worm gear 54 to rotate, the linkage worm gear 54 drives the turbine 32 to rotate, and the turbine 32 drives the control rod 35 to rotate, thus operating the cryogenic valve actuator. During the operation of the valve actuator, if the lubricating oil solidifies on the drive screw 43 and the linkage turbine 53 due to the low temperature, the heating wire 623 starts heating. The first heat-conducting ring 621 and the second heat-conducting ring 622 transfer heat, melting the solidified lubricating oil and allowing it to participate in the mechanical transmission of the cryogenic actuator's starting part. Furthermore, due to the thermal conductivity of the transmission shaft, the heat will flow along the shaft... The transmission direction is shifted, so a heating device is added to the side of the drive screw 43 and the linkage turbine 53. This reduces the starting resistance at the initial position and transfers heat to the entire transmission mechanism, dissolving the lubricating oil between the turbine 32 and the linkage worm 54. When the lubricating oil is about to dissolve, the heating wire stops heating, and the first heat-conducting ring 621 and the second heat-conducting ring 622 no longer output heat, allowing the cryogenic valve actuator to operate normally. If the cryogenic valve actuator stops working in a low-temperature environment and is restarted, the heating component 62 is activated first to dissolve the lubricating oil before the drive motor 41 is activated. Under such starting conditions, the mechanical wear caused by direct starting to the cryogenic valve actuator can be avoided as much as possible, and the inability to start can be prevented.
[0065] After the starting positions of the drive screw 43 and the linkage turbine 53 are heated, the starting resistance can be reduced, which allows the transmission structure of the valve actuator to operate. During the operation of the transmission structure, no excessive heat is required, only a small amount of heat transfer is needed.
[0066] By setting heating wire 623, the first heat-conducting ring 621 and the second heat-conducting ring 622 transfer heat to melt the lubricating oil that is about to solidify. After the lubricating oil melts, it drives the linkage turbine 53 to rotate through the drive screw 43, which achieves the effect of avoiding mechanical wear caused by direct start-up in low temperature environment and facilitating secondary start-up.
[0067] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
Claims
1. A preheatable cryogenic valve actuator, characterized in that: The system includes an installation component (2), a handle component (1) on top of the installation component (2), a control component (3) in the middle of the installation component (2), a drive component (4) inside the installation component (2), a linkage component (5) engaged with the output end of the drive component (4), the linkage component (5) being installed inside the installation component (2), a heating component (6) on one side of the output end of the drive component (4), and an installation body (21) including a main body (21), a main body chamber (22) on the main body (21), and the installation body (21) horizontally... A drive chamber (23) is provided, and a heating chamber (24) is also provided on the mounting body (21). A control module (7) is installed on the mounting body (21) above the heating chamber (24). The heating component (6) includes a positioning ring (61), which is installed in the heating chamber (24). A heating element (62) is installed in the middle of the positioning ring (61). The heating element (62) includes a first heat-conducting ring (621) and a second heat-conducting ring (622). A heating wire (623) is arrayed between the first heat-conducting ring (621) and the second heat-conducting ring (622).
2. The preheatable cryogenic valve actuator according to claim 1, characterized in that: The handle assembly (1) includes a handle turntable (11), and a handle connecting block (12) is installed below the handle turntable (11). The handle connecting block (12) is located above the main body chamber (22).
3. The preheatable cryogenic valve actuator according to claim 1, characterized in that: The control assembly (3) includes a control mounting base (36), a control top plate (31) is mounted in the middle of the control mounting base (36), a control rod (35) is rotatably mounted below the control top plate (31), and a turbine (32) is mounted below the control top plate (31).
4. A preheatable cryogenic valve actuator according to claim 3, characterized in that: A control spring (33) is provided below the turbine (32), and a connecting block (34) is installed below the control spring (33). The control rod (35) penetrates the connecting block (34), and the control spring (33) is sleeved on the outside of the control rod (35).
5. A preheatable cryogenic valve actuator according to claim 1, characterized in that: The drive assembly (4) includes a drive motor (41), and a drive fixing block (42) is mounted on one side of the drive motor (41). The drive fixing block (42) is fixed on the drive chamber (23).
6. A preheatable cryogenic valve actuator according to claim 5, characterized in that: A drive screw (43) is installed at the output end of the drive motor (41). A first limiting bearing (44) is installed on the side of the drive screw (43) away from the drive fixing block (42). The first limiting bearing (44) is fixed on the mounting body (21).
7. A preheatable cryogenic valve actuator according to claim 1, characterized in that: The linkage assembly (5) includes a connecting rod (51), a linkage turbine (53) is installed on one side of the connecting rod (51), and a linkage worm gear (54) is installed on the side of the linkage turbine (53) away from the connecting rod (51).
8. A preheatable cryogenic valve actuator according to claim 7, characterized in that: The linkage worm (54) penetrates the linkage turbine (53) and is fixedly connected to the connecting rod (51).
9. A preheatable cryogenic valve actuator according to claim 8, characterized in that: A linkage fixing block (52) is provided at the middle position of the linkage turbine (53) and the linkage worm (54). A second limiting bearing (55) is installed at the end of the linkage worm (54) away from the linkage turbine (53). The second limiting bearing (55) is installed inside the mounting body (21).
10. A preheatable cryogenic valve actuator according to claim 9, characterized in that: A linkage fixing block (52) is provided at the middle position of the linkage turbine (53) and the linkage worm (54), and the linkage fixing block (52) is fixedly installed inside the mounting body (21).