Valve actuator for high temperature environments

Abstract

The utility model relates to valve actuator technical field discloses a valve actuator for high temperature environment, including valve actuator main part, the equidistance fixed connection of valve actuator main part's casing outer surface has the heat dissipation fin, the bottom fixed connection of valve actuator main part has the support column, the outer surface bushing of support column has the support cylinder, the inside mounting of support cylinder has the locating support subassembly. The utility model provides independent stable support for valve actuator main part through support column, support cylinder and bevel gear drive and the locating support subassembly of screw rod meshing, obstructs pipeline disturbance transmission to reduce medium leakage risk, prolongs the life of sealing gasket, and the heat dissipation fin of casing improves high temperature heat dissipation efficiency, and the combination of collocating silica gel damping cover and pressure sensor, audible -visual alarm, realizes the real -time monitoring early warning of support state, and the safety, reliability and maintenance convenience of executor in high temperature industrial scene are improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of valve actuator technology, and more specifically to a valve actuator for high-temperature environments. Background Technology

[0002] As the core component of automatic valve control, valve actuators are widely used in industrial fields such as petrochemicals, metallurgy, power, and building materials, and are especially suitable for high-temperature scenarios such as industrial kilns, high-temperature pipelines, and boilers.

[0003] However, traditional valve actuators connect directly to pipelines via flanges at both the input and output ends, relying entirely on the rigid structure of the pipeline and flange for support. They lack independent support components (as disclosed in patent CN109780306B). In industrial settings, pipelines are susceptible to displacement or swaying due to temperature changes, media flow impacts, and external equipment vibrations. This disturbance is directly transmitted to the actuator: firstly, it leads to uneven distribution of the flange bolt preload, resulting in some bolts being loose and others overtightened. This prevents the gasket from fitting evenly against the flange sealing surface, creating localized gaps. In high-temperature environments, the gasket's elasticity further decreases after heat aging, causing the gaps to widen and potentially leading to media leakage, such as corrosive media in chemical applications or high-temperature steam leakage in power applications, posing significant safety risks. Secondly, the relative swaying between the actuator and the pipeline causes micro-sliding friction between the flange sealing surface and the gasket. Long-term friction can damage the gasket sealing structure (e.g., the spiral wound layer of a metal spiral wound gasket detaches), significantly shortening the gasket replacement cycle. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a valve actuator for high-temperature environments to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a valve actuator for high-temperature environments, comprising a valve actuator body, wherein heat dissipation fins are fixedly connected at equal intervals on the outer surface of the valve actuator body housing, a support column is fixedly connected to the bottom of the valve actuator body, a support cylinder is sleeved on the outer surface of the support column, a positioning support assembly is installed inside the support cylinder, the input end of the positioning support assembly extends to the outside of the support cylinder, a base plate is fixedly connected to the bottom of the support cylinder, a damping sleeve is fixedly sleeved on the outer surface of the base plate, a support plate is sleeved on the outer surface of the damping sleeve, an audible and visual alarm is fixedly installed on the surface of the support plate, and a pressure sensor is fixedly installed at the bottom inside the support plate, the input end of the pressure sensor abutting against the bottom of the base plate.

[0006] Furthermore, the positioning support assembly includes a bearing one fixedly installed inside the support cylinder. The inner ring of the bearing one is fixedly connected to a bolt, and the end face of the bolt is fixedly connected to a bevel gear one. The input end of the bolt extends to the outside of the support cylinder. The support cylinder contains a bearing two fixedly installed inside. The inner ring of the bearing two is fixedly connected to a threaded rod, and the end of the threaded rod is fixedly connected to a bevel gear two. The surface of the bevel gear one is engaged with the surface of the bevel gear two, and the outer surface of the threaded rod is threadedly engaged with the center of the support column.

[0007] Furthermore, a square groove matching the support column is provided at the center of the inside of the support cylinder, and the outer surface of the support column is slidably connected to the inner wall of the square groove.

[0008] Furthermore, both bevel gear two and bevel gear one are rotatably connected inside the support cylinder, and the bottom of the support cylinder extends into the support plate.

[0009] Furthermore, the pressure sensor controls the opening and closing of the audible and visual alarm via a controller, and the damping sleeve is a silicone sleeve.

[0010] Furthermore, the top of the damping sleeve has a slot that matches the support cylinder, and the bottom of the damping sleeve has a circular groove, with the input end of the pressure sensor extending into the circular groove.

[0011] The technical effects and advantages of this utility model are as follows: 1. This utility model provides a stable and independent support for the valve actuator body by independently setting support columns, support cylinders, and positioning support components, eliminating the dependence on the rigid structure of pipelines and flanges. The positioning support component, with the help of bevel gear transmission and threaded rod meshing structure, can precisely adjust the support height to ensure that the actuator body maintains a stable posture after being connected to the pipeline. It effectively blocks the transmission of disturbances caused by temperature changes, media impact, or external vibrations in the pipeline. This not only avoids the problem of uneven distribution of preload of flange connection bolts and reduces the probability of gasket gaps, thus reducing the safety risk of media leakage in high-temperature environments, but also reduces the micro-sliding friction between the flange sealing surface and the gasket, extending the service life of the gasket and reducing the frequency of replacement. At the same time, the heat dissipation fins on the outer surface of the shell can increase the heat dissipation area, improve the heat dissipation efficiency in high-temperature environments, and ensure the working stability of the core components of the actuator.

[0012] 2. This utility model, with its combination of a damping sleeve, pressure sensor, and audible and visual alarm, enables real-time monitoring and early warning of the support status. The silicone damping sleeve has excellent buffering and shock absorption performance, which can further absorb vibration energy and enhance the overall anti-disturbance capability of the actuator. The pressure sensor senses the pressure changes of the base plate in real time. When the supporting ground settles or the supporting structure becomes loose, causing an abnormal drop in pressure, the controller can quickly trigger the audible and visual alarm to promptly remind the staff to carry out maintenance and adjustment, avoiding a chain reaction of problems such as actuator displacement and flange seal failure caused by support failure. This significantly improves the safety, reliability, and ease of maintenance of valve actuators in high-temperature industrial scenarios. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a longitudinal sectional view of the support column, support cylinder, and support plate in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0014] The attached figures are labeled as follows: 1. Valve actuator body; 2. Heat dissipation fins; 3. Support column; 4. Support cylinder; 41. Base plate; 5. Positioning support assembly; 51. Bearing 1; 52. Bolt; 53. Bevel gear 1; 54. Bearing 2; 55. Threaded rod; 56. Bevel gear 2; 6. Damping sleeve; 7. Support plate; 8. Audible and visual alarm; 9. Pressure sensor. Detailed Implementation

[0015] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0016] Figures 1-3 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-3 The present invention will be further described below.

[0017] A valve actuator for high-temperature environments includes a valve actuator body 1. Heat dissipation fins 2 are fixedly connected at equal intervals to the outer surface of the valve actuator body 1. A support column 3 is fixedly connected to the bottom of the valve actuator body 1. A support cylinder 4 is sleeved on the outer surface of the support column 3. A positioning support assembly 5 is installed inside the support cylinder 4. The input end of the positioning support assembly 5 extends to the outside of the support cylinder 4. A base plate 41 is fixedly connected to the bottom of the support cylinder 4. A damping sleeve 6 is fixedly sleeved on the outer surface of the base plate 41. A support plate 7 is sleeved on the outer surface of the damping sleeve 6. An audible and visual alarm 8 is fixedly installed on the surface of the support plate 7. A pressure sensor 9 is fixedly installed at the bottom of the support plate 7. The input end of the pressure sensor 9 abuts against the bottom of the base plate 41.

[0018] In this implementation scheme, the valve actuator body 1 is combined with a support column 3, support cylinder 4, positioning support assembly 5, damping sleeve 6, support plate 7, audible and visual alarm 8, and pressure sensor 9. This combination structure not only blocks pipeline disturbance through an independent support system, but also improves high-temperature heat dissipation efficiency with the help of heat dissipation fins 2. Furthermore, it can provide early warning of support abnormalities through pressure sensor 9 and audible and visual alarm 8. This comprehensively solves the problems of sealing failure and media leakage caused by traditional actuators relying on pipeline support, and significantly improves the safety and stability of use in high-temperature scenarios.

[0019] Specifically, the positioning support assembly 5 includes a bearing 51 fixedly installed inside the support cylinder 4. The inner ring of the bearing 51 is fixedly connected to a bolt 52. The end face of the bolt 52 is fixedly connected to a bevel gear 53. The input end of the bolt 52 extends to the outside of the support cylinder 4. The support cylinder 4 is fixedly installed with a bearing 54. The inner ring of the bearing 54 is fixedly connected to a threaded rod 55. The end of the threaded rod 55 is fixedly connected to a bevel gear 56. The surface of the bevel gear 53 is engaged with the surface of the bevel gear 56. The outer surface of the threaded rod 55 is threadedly engaged with the center of the support column 3.

[0020] In this embodiment, the bearing 51, bolt 52, bevel gear 53, bearing 54, threaded rod 55, and bevel gear 56 of the positioning support assembly 5 constitute a transmission adjustment structure. By changing the direction of force transmission through bevel gear meshing, and in conjunction with the threaded engagement of the threaded rod 55 with the support column 3, the relative position of the support column 3 and the support cylinder 4 can be precisely adjusted, realizing flexible fine-tuning of the support height of the valve actuator body 1. This ensures that the actuator maintains a horizontal and stable posture after being connected to the pipeline. At the same time, bearing 51 and bearing 54 reduce frictional loss during the transmission process, improving the smoothness of the adjustment operation and the durability of the structure.

[0021] Specifically, a square groove matching the support column 3 is provided at the center of the inside of the support cylinder 4, and the outer surface of the support column 3 is slidably connected to the inner wall of the square groove.

[0022] In this embodiment, a square groove matching the support column 3 is opened inside the support cylinder 4. The outer surface of the support column 3 is slidably connected to the inner wall of the square groove. The square groove structure restricts the rotational freedom of the support column 3, avoids circumferential displacement of the support column 3 during the lifting and lowering adjustment process, and ensures that the threaded engagement between the threaded rod 55 and the support column 3 is always accurate. This ensures the positional stability of the valve actuator body 1 after support and prevents stress concentration at the flange connection between the actuator and the pipeline due to the shaking of the support column 3.

[0023] Specifically, both bevel gear 2 56 and bevel gear 1 53 are rotatably connected inside the support cylinder 4, and the bottom of the support cylinder 4 extends into the support plate 7.

[0024] In this embodiment, both bevel gear 2 56 and bevel gear 1 53 are rotatably connected inside the support cylinder 4. The bottom of the support cylinder 4 extends into the support plate 7. The support cylinder 4 provides a closed and stable installation space for bevel gear 1 53 and bevel gear 2 56, preventing dust and media splashes in the high-temperature environment from corroding the transmission components. At the same time, the connection structure between the support cylinder 4 and the support plate 7 enhances the overall rigidity of the support system, improves the support load-bearing capacity of the valve actuator body 1, and ensures the structural reliability for long-term use in high-temperature industrial scenarios.

[0025] Specifically, the pressure sensor 9 controls the opening and closing of the audible and visual alarm 8 through the controller, and the damping sleeve 6 is a silicone sleeve.

[0026] In this implementation scheme, the pressure sensor 9 controls the opening and closing of the audible and visual alarm 8 through the controller. The damping sleeve 6 is a silicone sleeve. The silicone damping sleeve 6 has excellent elasticity and buffering performance, which can absorb the energy transmitted by pipeline vibration and slight ground shaking, further weakening the impact of disturbance on the valve actuator body 1. The linkage design of the pressure sensor 9 and the audible and visual alarm 8 can monitor the pressure change of the base plate 41 in real time, and quickly trigger the alarm when the support structure is loose or the ground settles, so as to realize early detection and early handling of faults and reduce the risk of seal failure.

[0027] Specifically, the top of the damping sleeve 6 has a slot that matches the support cylinder 4, and the bottom of the damping sleeve 6 has a circular groove, with the input end of the pressure sensor 9 extending into the circular groove.

[0028] In this embodiment, the top of the damping sleeve 6 has a slot that matches the support cylinder 4, and the bottom has a circular groove with the input end of the pressure sensor 9 extending into the groove. The slot structure ensures that the support cylinder 4 and the damping sleeve 6 are tightly fitted together, avoiding relative sliding between them and affecting the stability of the support. The circular groove provides precise positioning for the installation of the pressure sensor 9, enabling the pressure sensor 9 to directly and stably sense the pressure transmission of the base plate 41, improving the accuracy of the pressure monitoring data and providing a reliable basis for the timely response of the audible and visual alarm 8.

[0029] The working principle and usage process of this utility model are as follows: In use, after placing the valve actuator body 1 in the designated position, connect the conveying pipeline to the input and output ends of the valve actuator body 1 via a flange. Then, turn the bolt 52 clockwise with a wrench. The bolt 52 drives the bevel gear 56 and threaded rod 55 to rotate clockwise via bevel gear 53. Through the meshing of the threaded rod 55 with the support column 3, the support column 3 and support cylinder 4 slide towards each other. When the bottom of the support plate 7 abuts against the ground, the pressure sensor 9 receives feedback. When the pressure on the pressure sensor 9 reaches the specified range, stop turning the bolt 52. At this time, the valve actuator body 1 is supported. When the ground supporting the support plate 7 settles, the pressure on the pressure sensor 9 decreases. When the pressure decreases to a certain level, the controller activates the audible and visual alarm 8, issuing an alarm so that staff can promptly detect the problem and readjust the support force of the valve actuator body 1, ensuring the stability of the valve actuator body 1 during operation.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A valve actuator for high-temperature environments, comprising a valve actuator body (1), characterized in that: The valve actuator body (1) has heat dissipation fins (2) fixedly connected at equal intervals on the outer surface of the housing. The valve actuator body (1) has a support column (3) fixedly connected at the bottom. The support column (3) has a support cylinder (4) sleeved on its outer surface. The support cylinder (4) has a positioning support assembly (5) installed inside. The input end of the positioning support assembly (5) extends to the outside of the support cylinder (4). The support cylinder (4) has a base plate (41) fixedly connected at the bottom. The base plate (41) has a damping sleeve (6) fixedly sleeved on its outer surface. The damping sleeve (6) has a support plate (7) sleeved on its outer surface. The support plate (7) has an audible and visual alarm (8) fixedly installed on its surface. The support plate (7) has a pressure sensor (9) fixedly installed at its inner bottom end. The input end of the pressure sensor (9) abuts against the bottom of the base plate (41).

2. A valve actuator for high-temperature environments according to claim 1, characterized in that: The positioning support assembly (5) includes a bearing (51) fixedly installed inside the support cylinder (4). The inner ring of the bearing (51) is fixedly connected to a bolt (52). The end face of the bolt (52) is fixedly connected to a bevel gear (53). The input end of the bolt (52) extends to the outside of the support cylinder (4). The support cylinder (4) is fixedly installed with a bearing (54). The inner ring of the bearing (54) is fixedly connected to a threaded rod (55). The end of the threaded rod (55) is fixedly connected to a bevel gear (56). The surface of the bevel gear (53) meshes with the surface of the bevel gear (56). The outer surface of the threaded rod (55) is threadedly meshed with the center of the support column (3).

3. A valve actuator for high-temperature environments according to claim 1, characterized in that: The support cylinder (4) has a square groove at its center that matches the support column (3), and the outer surface of the support column (3) is slidably connected to the inner wall of the square groove.

4. A valve actuator for high-temperature environments according to claim 2, characterized in that: Both bevel gear 2 (56) and bevel gear 1 (53) are rotatably connected inside the support cylinder (4), and the bottom of the support cylinder (4) extends into the support plate (7).

5. A valve actuator for high-temperature environments according to claim 1, characterized in that: The pressure sensor (9) controls the opening and closing of the audible and visual alarm (8) through the controller, and the damping sleeve (6) is a silicone sleeve.

6. A valve actuator for high-temperature environments according to claim 1, characterized in that: The top of the damping sleeve (6) has a slot that matches the support cylinder (4), and the bottom of the damping sleeve (6) has a circular groove. The input end of the pressure sensor (9) extends into the circular groove.

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