A vibration-resistant mounting bracket for a side-mounted regulating valve positioner

Abstract

This invention discloses a vibration-damping mounting bracket for a side-mounted regulating valve positioner, relating to the technical field of vibration damping equipment for regulating valve positioners. The main objective is to provide a vibration-damping mounting bracket for a side-mounted regulating valve positioner capable of multi-stage vibration damping. The main technical solution of this invention is as follows: a vibration-damping mounting bracket for a side-mounted regulating valve positioner, comprising: a fixed base, with a first fixed plate having multiple first fixed holes; a fixing component, with two ends of a second mounting base respectively fixedly connected to the first mounting base and a connecting base, one side of the connecting base connected to the positioner; and a vibration-damping component, with one end of a limiting bolt passing through the first fixed holes, a damping body, the first mounting holes, and a buffer component and connected to a preload nut, the upper end face of a support block contacting the lower end face of the second mounting base, and the lower end face of the support block contacting the upper end face of the second fixed plate. This invention is mainly used for potentiometer vibration damping.

Description

Technical Field

[0001] This invention relates to the field of vibration damping equipment for regulating valve positioners, and in particular to an anti-vibration mounting bracket for a side-mounted regulating valve positioner. Background Technology

[0002] Control valve positioners are typically mounted on the actuator of a control valve to detect valve stem displacement and feed the valve position signal back to the control system. Contact-type positioners contain a potentiometer brush and a circuit board. The brush slides in contact with the potentiometer resistor to obtain the valve position signal. Currently, most control valve positioner mounting brackets are rigid connections, lacking effective vibration damping. When the positioner is side-mounted, it bears not only pipeline vibration but also bending moments and shear forces generated by its own weight. During severe pipeline vibration, the vibration is transmitted to the positioner through the control valve body and actuator, easily leading to wear of the potentiometer brush, fatigue of solder joints on the circuit board, or component damage, thus shortening the positioner's lifespan.

[0003] Existing technologies offer various solutions. For example, in the connector field, there are devices that achieve floating connections through the cooperation of elastic elements and limiting components to compensate for installation errors. However, most limiting methods involve rigid contact stop of metal parts, without addressing the smooth transition between flexible buffering and rigid limiting. This makes them unsuitable for the buffering and vibration reduction requirements of side-mounted positioners for regulating valves. In the field of vibration isolation for large equipment, there are multi-level vibration isolation devices, but they are bulky and complex, unsuitable for the compact space of side-mounted positioners. In the sensor field, there are solutions that use internal elastic elements to dampen circuit boards, but they lack a systematic stiffness matching design with the external mounting bracket's damping structure. Furthermore, existing rubber pads and metal spring dampers lack effective limiting structures, making it easy for the positioner to experience large relative displacements during vibration, leading to distortion of the valve position feedback signal and affecting adjustment accuracy. Moreover, the stiffness and damping are not adjustable, making it impossible to adjust according to different positioner weights and vibration conditions, resulting in poor adaptability. Summary of the Invention

[0004] In view of this, the present invention provides a vibration-resistant mounting bracket for a side-mounted regulating valve positioner, the main purpose of which is to provide a vibration-resistant mounting bracket for a side-mounted regulating valve positioner that can provide multi-stage vibration damping for the positioner.

[0005] To achieve the above objectives, the present invention mainly provides the following technical solutions:

[0006] This invention provides a vibration-resistant mounting bracket for a side-mounted regulating valve positioner, comprising:

[0007] The fixing base includes a first fixing plate and a second fixing plate, the first fixing plate being vertically connected to the second fixing plate, and the first fixing plate having a plurality of first fixing holes;

[0008] A fixing component, comprising a first mounting base, a second mounting base, and a connecting base, wherein the two ends of the second mounting base are fixedly connected to the first mounting base and the connecting base respectively, the first mounting base has a plurality of first mounting holes, and one side of the connecting base is connected to a locator;

[0009] The vibration-damping component includes a limiting bolt, a shock absorber, a preload nut, a buffer component, and a support block. One end of the limiting bolt passes sequentially through the first fixing hole, the shock absorber, the first mounting hole, and the buffer component and is connected to the preload nut. The upper end face of the support block contacts the lower end face of the second mounting base, and the lower end face of the support block contacts the upper end face of the second fixing plate.

[0010] Furthermore, the buffer component includes a buffer pad and a disc spring. One side of the buffer pad is attached to the first mounting base, and the other side is attached to the disc spring. The other side of the disc spring is attached to the preload nut.

[0011] Furthermore, the buffer component also includes a buffer sleeve, which is disposed in the first mounting hole, with the outer side of the buffer sleeve fitting against the inner side of the first mounting hole and the inner side of the buffer sleeve fitting against the outer side of the limiting bolt.

[0012] Furthermore, the first fixing plate has a first positioning groove, the first mounting base has a second positioning groove, and the two ends of the shock absorber are respectively disposed in the first positioning groove and the second positioning groove.

[0013] Furthermore, the diameters of the end faces of the shock absorber are larger than the diameter of the intermediate cross-section.

[0014] Furthermore, the upper end face of the support block contacts the lower end face of the second mounting base, and the lower end face of the support block contacts the upper end face of the second fixing plate.

[0015] Furthermore, a first shock-absorbing pad is disposed on the end face of the first fixed plate away from the shock absorber, and the limiting bolt passes through the first shock-absorbing pad;

[0016] The second shock-absorbing pad is disposed between the connecting seat and the positioner.

[0017] Furthermore, the circuit board vibration damping component includes a mounting post, a screw, a bushing, and a vibration damping sleeve. One end of the mounting post is fixedly connected to the inner wall of the locator. The screw passes through the bushing and is threaded to the mounting post. The inner side of the vibration damping sleeve is attached to the outer side of the bushing, and the outer side of the vibration damping sleeve is attached to the circuit board.

[0018] This invention provides a vibration-resistant mounting bracket for a side-mounted regulating valve positioner. The mounting base connects the regulating valve actuator and includes a first fixing plate and a second fixing plate. The first fixing plate is perpendicularly connected to the second fixing plate and has multiple first fixing holes. The fixing component mounts the positioner and includes a first mounting seat, a second mounting seat, and a connecting seat. Both ends of the second mounting seat are fixedly connected to the first mounting seat and the connecting seat, respectively. The first mounting seat has multiple first mounting holes, and one side of the connecting seat is connected to the positioner. The vibration-resistant component connects the mounting base and the fixing component, and simultaneously reduces vibration transmission to the regulating valve actuator. The vibration-damping component includes a limiting bolt, a damping body, a preload nut, and a buffer component. One end of the limiting bolt passes sequentially through the first fixing hole, the damping body, the first mounting hole, and the buffer component, and is connected to the preload nut. The upper end face of the support block contacts the lower end face of the second mounting base, and the lower end face of the support block contacts the upper end face of the second fixing plate. Compared with the prior art, there are devices that achieve floating connection through the cooperation of elastic elements and limiting components to compensate for installation errors. However, most of the limiting methods are rigid contact stop of metal parts, which do not involve a smooth transition between flexible buffering and rigid limiting, and cannot meet the buffering and vibration damping requirements of side-mounted regulating valve positioners. In the field of vibration isolation for large equipment, there are multi-level vibration isolation technology devices. However, these methods are bulky and complex, unsuitable for the compact space required for side mounting of the positioner. In the sensor field, there are solutions that use internal elastic elements to dampen the circuit board, but these lack a systematic stiffness matching design with the external mounting bracket's damping structure. Furthermore, existing rubber pads and metal spring dampers lack effective limiting structures, leading to significant relative displacement of the positioner during vibration, resulting in distorted valve position feedback signals and affecting adjustment accuracy. Moreover, their stiffness and damping are not adjustable, making them unsuitable for different positioner weights and vibration conditions, resulting in poor adaptability. In this technical solution, the first fixing plate is mounted on the regulating valve actuator, one side of the connecting seat is connected to the positioner, and one end of the limiting bolt passes through the... The first fixing hole, the shock absorber, the first mounting hole, and the buffer component are connected to the pre-tightening nut. When the vibration generated by the regulating valve actuator is transmitted to the first fixing plate in the horizontal direction, the fixing seat relative to the vertical section of the fixing component generates a horizontal relative displacement, causing the shock absorber to undergo axial compression or tensile deformation, thereby converting the vibration energy into material internal energy and dissipating it. Furthermore, the shock absorber has a large elastic deformation space in the horizontal axis and a low shear stiffness in the vertical direction. When the positioner's own weight generates a vertically downward shear force, it cooperates with the bottom support block to bear the static load, avoiding excessive static shear strain on the shock absorber, delaying the accumulation of fatigue damage, and extending its fatigue life, thereby achieving the technical effect of reducing the vibration of the positioner. Attached Figure Description

[0019] Figure 1 A left-side view of the anti-vibration mounting bracket for a side-mounted regulating valve positioner provided in an embodiment of the present invention;

[0020] Figure 2 A top view of an anti-vibration mounting bracket for a side-mounted regulating valve positioner provided in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0022] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0023] Figure 5 This is a schematic diagram of the structure of a shock absorber provided in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of a circuit board vibration damping component provided in an embodiment of the present invention. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 5 As shown, an embodiment of the present invention provides a vibration-resistant mounting bracket for a side-mounted regulating valve positioner, comprising:

[0027] The fixing base includes a first fixing plate 11 and a second fixing plate 12. The first fixing plate 11 is vertically connected to the second fixing plate 12, and the first fixing plate 11 has a plurality of first fixing holes 13.

[0028] The fixing component includes a first mounting base 21, a second mounting base 22, and a connecting base 23. The two ends of the second mounting base 22 are fixedly connected to the first mounting base 21 and the connecting base 23, respectively. The first mounting base 21 has a plurality of first mounting holes 24. One side of the connecting base 23 is connected to the locator 9.

[0029] The vibration-damping component includes a limiting bolt 31, a damping body 32, a preload nut 33, a buffer component, and a support block 35. One end of the limiting bolt 31 passes through the first fixing hole 13, the damping body 32, the first mounting hole 24, and the buffer component in sequence and is connected to the preload nut 33. The upper end face of the support block 35 contacts the lower end face of the second mounting base 22, and the lower end face of the support block 35 contacts the upper end face of the second fixing plate 12.

[0030] This invention provides a vibration-resistant mounting bracket for a side-mounted regulating valve positioner. The mounting base connects the regulating valve actuator and includes a first fixing plate 11 and a second fixing plate 12. The first fixing plate 11 is perpendicularly connected to the second fixing plate 12, and the first fixing plate 11 has multiple first fixing holes 13. The fixing component mounts the positioner 9 and includes a first mounting seat 21, a second mounting seat 22, and a connecting seat 23. Both ends of the second mounting seat 22 are fixedly connected to the first mounting seat 21 and the connecting seat 23, respectively. The first mounting seat 21 has multiple first mounting holes 24, and one side of the connecting seat 23 is connected to the positioner 9. The vibration-resistant component connects the mounting base and the fixing component, and simultaneously reduces vibration transmission to the regulating valve actuator. The vibration-resistant component includes a limiting bolt 31, a damping body 32, a preload nut 33, and a buffer component. One end of the limiting bolt 31 passes sequentially through the first fixing hole 13, the damping body 32, and the first mounting hole 24. The buffer component is connected to the pre-tightening nut 33. The upper end face of the support block 35 contacts the lower end face of the second mounting base 22, and the lower end face of the support block 35 contacts the upper end face of the second fixing plate 12. Compared with the prior art, there are devices that achieve floating connection by cooperating with elastic elements and limiting parts to compensate for installation errors. However, most of the limiting methods are rigid contact stop of metal parts, which do not involve a smooth transition between flexible buffer and rigid limiting. They cannot meet the buffering and shock absorption requirements of the side mounting of the regulating valve positioner 9. In the field of vibration isolation of large equipment, there are multi-level vibration isolation technology devices, but they are large in size and complex in structure, and are not suitable for the compact space of the side mounting of the positioner 9. In the field of sensors, there are technical solutions that set elastic elements inside to dampen the circuit board, but there is no systematic stiffness matching design with the damping structure of the external mounting bracket. In addition, existing rubber pads and metal spring shock absorbers lack effective limiting structures. During vibration, the positioner 9 is prone to large relative displacement, which leads to distortion of the valve position feedback signal and affects the adjustment accuracy.Furthermore, the stiffness and damping are not adjustable, making it impossible to adjust according to different positioner weights and vibration conditions, resulting in poor adaptability. In this technical solution, the first fixing plate 11 is installed on the regulating valve actuator, one side of the connecting seat 23 is connected to the positioner 9, and one end of the limiting bolt 31 passes through the first fixing hole 13, the damping body 32, the first mounting hole 24, and the buffer component in sequence and is connected to the pre-tightening nut 33. When the vibration generated by the regulating valve actuator is transmitted to the first fixing plate 11 in the horizontal direction, the fixing seat generates a horizontal relative displacement relative to the vertical section of the fixing component, causing the damping body 32 to undergo axial compression or tensile deformation, thereby converting the vibration energy into material internal energy and dissipating it. In addition, the damping body 32 has a large elastic deformation space in the horizontal axis and a low shear stiffness in the vertical direction. When the positioner 9 generates a vertically downward shear force due to its own weight, it cooperates with the bottom support block 35 to bear the static load, avoiding excessive static shear strain on the damping body 32, delaying the accumulation of fatigue damage, and extending its fatigue life, thereby achieving the technical effect of reducing the vibration of the positioner 9. ;

[0031] The aforementioned fixing seat serves to connect the regulating valve actuator. The fixing seat includes a first fixing plate 11 and a second fixing plate 12. The first fixing plate 11 is perpendicularly connected to the second fixing plate 12. The first fixing plate 11 has multiple first fixing holes 13. The first fixing plate 11 and the second fixing plate 12 have an L-shaped structure. The first fixing plate 11 is used for fixed connection to the side of the regulating valve actuator. The second fixing plate 12 is located below the first fixing plate 11, and the first fixing plate 11 is perpendicular to the second fixing plate 12. Multiple first fixing holes 13 are used to install limit bolts 31. The fixing component serves to install the positioner 9. The fixing component includes a first mounting seat 21, a second mounting seat 22, and a connecting seat 23. The two ends of the second mounting base 22 are respectively fixedly connected to the first mounting base 21 and the connecting base 23. The first mounting base 21 has multiple first mounting holes 24. One side of the connecting base 23 is connected to the locator 9. The first mounting base 21, the second mounting base 22, and the connecting base 23 are arranged in a U-shaped structure. Furthermore, the first mounting base 21, the second mounting base 22, and the connecting base 23 are integrally bent. The first mounting base 21 and the connecting base 23 are parallel to each other. The two ends of the second mounting base 22 are respectively perpendicularly connected to the first mounting base 21 and the connecting base 23. The connecting base 23 is used to install the locator 9. The connecting base 23 is provided with connecting screw holes. The shape and position of the connecting screw holes are adapted according to the model of the locator 9. The function of the vibration-damping component is to connect the fixed base 1 and the fixed part. This component, capable of reducing vibration transmission through the connected regulating valve actuator, includes a limiting bolt 31, a damping body 32, a preload nut 33, and a buffer component. One end of the limiting bolt 31 passes sequentially through the first fixing hole 13, the damping body 32, the first mounting hole 24, and the buffer component, and is connected to the preload nut 33. The preload nut 33 is installed at the end of the limiting bolt 31. The upper end face of the support block 35 contacts the lower end face of the second mounting base 22, and the lower end face of the support block 35 contacts the upper end face of the second fixing plate 12. The limiting bolt 31 passes sequentially through the first fixing hole 13, the damping body 32, the first mounting hole 24, and the buffer component, and is connected to the preload nut 33. The pre-tightening nut 33 refers to the fact that the shock absorber 32 and the buffer component are fitted onto the limiting bolt 31. The number of shock absorbers 32 is the same as the number of limiting bolts 31. The shock absorber 32 is disposed between the first fixing plate 11 and the first mounting base 21. The diameter of the two end faces of the shock absorber 32 is larger than the diameter of the middle section, that is, the shock absorber 32 is hourglass-shaped. The shock absorber 32 is made of rubber or polyurethane material. A through hole is opened at the center of the shock absorber 32 for the limiting bolt 31 to pass through. The shock absorber 32 is installed horizontally in the axial direction. Furthermore, the first fixing plate 11 has a first positioning groove, and the first mounting base 21 has a second positioning groove. The two ends of the shock absorber 32 are respectively disposed in the first positioning groove and the second positioning groove.The depth of the first and second positioning grooves is 1mm to 3mm, allowing the two ends of the damper 32 to be embedded, preventing longitudinal displacement of the damper 32, and ensuring the synchronous deformation of multiple dampers 32. When the pipeline vibration is transmitted to the fixed seat in the horizontal direction, the fixed seat relative to the fixed component generates a horizontal relative displacement, causing the damper 32 to undergo axial compression or tensile deformation, thereby converting the vibration energy into material internal energy and dissipating it, thus achieving the main damping function. The hourglass-shaped structural design gives the damper 32 a large elastic deformation space in the horizontal axis, while having a low shear stiffness in the vertical direction. When the self-weight of the locator 9 generates a vertically downward shear force, it cooperates with the bottom support block 35 to bear the static load, avoiding excessive static shear strain on the damper 32, delaying the accumulation of fatigue damage, and extending its fatigue life. Multiple dampers 32 are evenly distributed between the fixed seat and the fixed component, sharing the vibration load and ensuring balanced force in all directions, thus achieving damping. The hardness of the damping body 32 can be selected according to the vibration frequency and the weight of the positioner. The hardness of the damping body 32 is between Shore A50 and A80. The height of the bottom support block 35 is adjustable. For example, a threaded hole is opened on the second fixed plate 12, and an adjusting screw or shim is set at the lower end of the support block 35. The height of the support block can be adjusted by adjusting the screw or shim to adapt to different working conditions and positioner models. In addition, a floating gap is left between the first mounting base 21 and the fixed base. This gap is the distance between the two metal surfaces of the fixed base and the first mounting base 21. The size of the gap is determined by the natural height of the damping body 32, the pre-compression amount, and the depth of the positioning grooves embedded at both ends. The floating gap is between 0.5 and 2 mm. In this technical solution, the damping body 32 actively absorbs horizontal vibration energy, and the bottom support block 35 is responsible for unloading static loads. The synergistic effect of the two allows the damping body 32 to focus on dynamic damping function, significantly extending the fatigue life of the damping body 32 and the overall service life of the support.

[0032] Furthermore, the buffer component includes a buffer pad 341 and a disc spring 342. One side of the buffer pad 341 is attached to the first mounting base 21, and the other side is attached to the disc spring 342. The other side of the disc spring 342 is attached to the preload nut 33. The buffer component also includes a buffer sleeve 343, which is disposed in the first mounting hole 24. The outer side of the buffer sleeve 343 is attached to the inner side of the first mounting hole 24, and the inner side of the buffer sleeve 343 is attached to the outer side of the limiting bolt 31.In this embodiment, the buffer component is further defined. The buffer sleeve 343 is disposed within the first mounting hole 24, and the outer wall of the buffer sleeve 343 contacts the inner wall of the first mounting hole 24. A radial gap of 0.3 to 1.5 mm is left between the inner hole of the buffer sleeve 343 and the limiting bolt 31. The buffer sleeve 343 is made of rubber or polyurethane. The greater the wall thickness and the lower the hardness, the longer the buffer stroke, the more gradual the increase of the buffer force, and the smoother the limiting transition. Under normal vibration conditions, the limiting bolt 31 moves freely within the radial gap, and the fixed component floats elastically with the damping body 32 to achieve flexible vibration reduction. When the vibration amplitude increases to near the limit of the radial gap, the limiting bolt 31 first makes elastic contact with the inner wall of the buffer sleeve 343; as the vibration amplitude further increases... As the vibration amplitude increases, the elastic deformation of the buffer sleeve 343 gradually increases, and the buffering force gradually increases. When the vibration amplitude increases beyond the elastic deformation limit of the buffer sleeve 343, the limiting bolt 31 forms a rigid contact with the inner wall of the first mounting hole 24 through the fully compressed buffer sleeve 343, achieving final displacement limitation. This gradual limiting process avoids rigid collisions caused by sudden elimination of gaps. The buffer pad 341, made of rubber or polyurethane, is installed between the disc spring 342 and the first mounting base 21. As the bearing surface of the disc spring 342, the buffer pad 341 absorbs the high-frequency residual vibration transmitted by the disc spring 342 through its own elastic deformation, preventing noise and wear between metal parts due to high-frequency vibration. The disc spring 342 itself has... With nonlinear stiffness characteristics, within the small displacement range of normal vibration, the disc spring 342 has low stiffness, which does not affect the flexible damping effect of the damper 32. When the vibration displacement increases, the stiffness of the disc spring 342 increases sharply, generating a strong reaction force to prevent further compression, playing a dual role of buffering and limiting, preventing rigid collisions during vibration impact, and allowing the pre-tightening mechanism to automatically adjust the resistance force according to the magnitude of the impact force. This complements the progressive limiting of the buffer sleeve 343, which provides progressive limiting in the vertical direction, while the disc spring 342 provides adaptive stiffness adjustment in the axial and horizontal directions. Together, they cover the buffering and limiting requirements of the locator 9 mounting base in different directions. The concave surface of the disc spring 342 faces the upper buffer pad 341. Its outer edge contacts the preload nut 33, and its inner edge contacts the upper buffer pad 341. By tightening the preload nut 33, the compression of the disc spring 342 is changed, thereby adjusting the pre-compression of the damper 32. The tighter the preload nut 33 is tightened, the greater the initial compression of the damper 32 and the higher the initial stiffness; conversely, the less tightened, the lower the initial stiffness. On-site, based on the weight of the positioner 9 and the vibration conditions, the appropriate initial stiffness of the damper 32 is set by adjusting the preload nut 33 to achieve the optimal configuration of the overall system stiffness. In this technical solution, through progressive flexible limiting, the limiting force changes continuously and gradually increases along the displacement path, avoiding the rigid collision caused by the sudden elimination of gap in the traditional limiting method, ensuring the damping effect during normal vibration and the safety during extreme impact.

[0033] Furthermore, a first damping pad 4 and a second damping pad 5 are added. The first damping pad 4 is disposed on the end face of the first fixed plate 11 away from the damping body 32, and the limiting bolt 31 passes through the first damping pad 4. The second damping pad 5 is disposed between the connecting seat 23 and the positioner 9. In this embodiment, a first damping pad 4 and a second damping pad 5 are added. The first damping pad 4 is disposed between the first fixed plate 11 and the regulating valve actuator, and the second damping pad 5 is disposed between the connecting seat 23 and the positioner 9. Both the first damping pad 4 and the second damping pad 5 are rubber or polyurethane gaskets with a thickness of 2-5 mm. The first damping pad 4 is the first-stage damping element on the vibration transmission path. Its stiffness is designed to be the lowest stage in the external damping chain, which can effectively isolate the high-frequency vibration components transmitted by the pipeline and prevent high-frequency vibration from entering the subsequent damping links and causing resonance. At the same time, it is located on the outermost side of the support, which is convenient for installation and maintenance. Gaskets with different hardness can be replaced according to the intensity of vibration on site to adjust the vibration isolation frequency range. The second damping pad 5 is the last damping element on the vibration transmission path before reaching the housing of the positioner 9. The primary external damping element, with a stiffness design higher than that of the damping body 32, further absorbs the residual vibration after it has been attenuated by the first damping pad 4 and the damping body 32, ensuring that the positioner 9 will not generate excessive relative displacement under normal operating conditions, thus guaranteeing valve position feedback accuracy and installation stability. Furthermore, the first damping pad 4, the damping body 32, and the second damping pad 5 are arranged sequentially along the vibration transmission path to form a three-stage damping system. The stiffness of the three components is matched step by step. The first damping pad 4 has a lower stiffness, which initially isolates high-frequency vibration; the damping body 32 has moderate stiffness, which causes axial compression / tension deformation due to horizontal vibration to absorb the main vibration energy, while the bottom support block 35 bears the weight of the positioner 9 to relieve the vertical shear load of the damping body 32; the second damping pad 5 has a higher stiffness, which attenuates residual vibration and ensures the stability of the positioner 9 during installation. The three-level stiffness transitions gradually from low to high, preventing single damping elements from failing or resonating due to stiffness mismatch. This collectively broadens the overall vibration isolation frequency band of the system. Furthermore, by matching the three levels of stiffness to widen the vibration isolation frequency band, the positioner 9 remains stable under normal operating conditions, reducing the frequency of triggering the flexible limiting mechanism and lowering its wear. When extreme impacts occur, the flexible limiting mechanism smoothly transitions through the three-stage radial clearance of the buffer sleeve 343, protecting the damper 32 from excessive compression damage and preventing impact damage to the support structure due to rigid collisions. The side load-bearing structure continuously bears the weight of the positioner 9, relieving the static shear load on the damper 32 and delaying its fatigue aging. The extended lifespan of the damper 32, in turn, maintains the long-term effectiveness of the multi-level damping system, significantly improving the overall damping effect and the service life of the positioner 9.

[0034] Furthermore, such as Figure 6As shown, a circuit board vibration damping component has been added. The circuit board 8 vibration damping component includes a mounting post 61, a screw 62, a bushing 63, and a vibration damping sleeve 64. One end of the mounting post 61 is fixedly connected to the inner wall of the locator 9. The screw 62 passes through the bushing 63 and is threaded to the mounting post 61. The inner side of the vibration damping sleeve 64 is attached to the outer side of the bushing 63, and the outer side of the vibration damping sleeve 64 is attached to the circuit board 8. In this embodiment, a shock-absorbing component for the circuit board 8 is added. The mounting post 61 is fixed to the inner wall of the locator 9's housing, and the other end of the mounting post 61 extends into the locator 9. A screw 62 is threaded onto the mounting post 61. A bushing 63 is mounted on the screw 62 and covers its outer surface. The inner side of the shock-absorbing sleeve 64 is fitted against the outer side of the bushing 63, and the outer side of the shock-absorbing sleeve 64 is fitted against the circuit board 8. The circuit board 8 is elastically floating and suspended above the mounting post 61 by the shock-absorbing sleeve 64, avoiding direct contact with the screw 62 and the mounting post 61, thus absorbing high-frequency signals transmitted to the circuit board 8. Vibration is reduced, solder joint fatigue and component damage are minimized. The damping sleeve 64 is made of silicone or rubber and is designed with the lowest stiffness in the entire damping chain. The residual vibration after the external three-stage damping is further absorbed by the damping sleeve 64, preventing the circuit board 8 from resonating with external vibrations. The flange of the bushing 63 presses against the upper end face of the damping sleeve 64. When the screw 62 is tightened, the pressure applied by the screw head is transmitted to the damping sleeve 64 through the flange of the bushing 63, preventing the damping sleeve 64 from being over-compressed, which would lead to elastic failure or sudden change in rigidity. At the same time, the bushing 63 provides a rigid channel for the screw 62 to pass through the damping sleeve 64, ensuring the reliability of the screw 62 connection.

[0035] It should be noted that the damper 32 and the floating clearance, the buffer sleeve 343 and the radial clearance, the support block 35 and the second fixed plate 12 can form a complementary and synergistic relationship, as detailed below:

[0036] First, the horizontal vibration of the pipeline causes the damper 32 to undergo axial compression / tension deformation to actively absorb vibration energy; the support block 35 bears the weight of the positioner 9, relieving the static shear load on the damper 32 in the vertical direction, allowing the damper 32 to focus on dynamic damping function and extend its fatigue life; the radial clearance of the buffer sleeve 343 provides progressive limit protection of "free floating → elastic contact buffer → rigid limit" when the vibration amplitude exceeds the limit, avoiding rigid collision. The three functions are clearly divided and complement each other, jointly ensuring the stability and reliability of the positioner 9 in a severe vibration environment.

[0037] Secondly, the multi-stage damping system and the damping sleeve 64 are matched in stiffness step by step to form an overall damping chain. The first damping pad 4 has low stiffness and is used to isolate high-frequency vibration. The damping body 32 has moderate stiffness and is used to absorb the main vibration energy. The second damping pad 5 has high stiffness and is used to attenuate residual vibration and ensure the installation stability of the positioner 9. The damping sleeve 64 on the circuit board 8 has the lowest stiffness and serves as the last line of defense to absorb the residual vibration after external multi-stage attenuation. The overall stiffness transitions step by step along the transmission path from "lower → moderate → higher → lowest", so that each component can attenuate vibrations in a targeted manner for different frequency bands, and together broaden the effective vibration isolation frequency band of the system as a whole, realizing system-level coordinated damping from the actuator to the circuit board 8.

[0038] Finally, a mutually protective positive cycle is formed between the multi-stage damping system, the buffer sleeve 343 and the radial clearance, the support block 35, and the second fixed plate 12. The multi-stage damping system keeps the positioner 9 stable under normal operating conditions by widening the vibration isolation frequency band, reducing the frequency of triggering and wear of the buffer sleeve 343 and the radial clearance. The buffer sleeve 343 and the radial clearance protect the damper 32 from excessive compression damage during extreme impacts, while avoiding rigid collision damage to the support structure. The support block 35 and the second fixed plate 12 continuously remove the static load of the damper 32, delaying the fatigue aging of the damper 32. After the life of the damper 32 is extended, it in turn maintains the long-term effectiveness of the multi-stage damping system, significantly improving the overall damping effect and the service life of the positioner 9.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An anti-vibration mounting bracket for a side-mounted control valve positioner, characterized by, The utility model relates to a kind of anti-vibration mounting supports of side-mounted regulating valve positioner, including: Fixed seat, the fixed seat includes first fixed plate and second fixed plate, the first fixed plate is vertically connected to the second fixed plate, the first fixed plate has a plurality of first fixed hole on it; Fixed component, the fixed component includes first mounting seat, second mounting seat and connecting seat, the two ends of the second mounting seat are fixedly connected to the first mounting seat and the connecting seat respectively, the first mounting seat has a plurality of first mounting hole, one side of the connecting seat is connected to positioner; Anti-vibration component, the anti-vibration component includes limiting bolt, shock absorber, pre-tightening nut, buffer component and support block, one end of the limiting bolt passes through the first fixed hole, the shock absorber, the first mounting hole, the buffer component and is connected to the pre-tightening nut in sequence, the upper end face of the support block is in contact with the lower end face of the second mounting seat, the lower end face of the support block is in contact with the upper end face of the second fixed plate.

2. According to the anti-vibration mounting support of side-mounted regulating valve positioner of claim 1, wherein, The buffer component includes buffer pad and disc spring, one side of the buffer pad is attached to the first mounting seat, the other side is attached to the disc spring, the other side of the disc spring is attached to the pre-tightening nut.

3. According to the anti-vibration mounting support of side-mounted regulating valve positioner of claim 2, wherein, The buffer component further includes buffer sleeve, the buffer sleeve is arranged in the first mounting hole, the outside of the buffer sleeve is attached to the inside of the first mounting hole, and the inside of the buffer sleeve is attached to the outside of the limiting bolt.

4. According to the anti-vibration mounting support of side-mounted regulating valve positioner of claim 1, wherein, The first fixed plate has a first positioning groove, the first mounting seat has a second positioning groove, and the two ends of the shock absorber are arranged in the first positioning groove and the second positioning groove respectively.

5. According to the anti-vibration mounting support of side-mounted regulating valve positioner of claim 4, wherein, The diameter of the two end faces of the shock absorber is greater than the diameter of the intermediate section.

6. An anti-vibration mounting bracket for a side-mounted control valve positioner according to any one of claims 1 to 5, characterised in that, Further comprising: First shock pad, the first shock pad is arranged at the end face of the first fixed plate away from the shock absorber, and the limiting bolt passes through the first shock pad; Second shock pad, the second shock pad is arranged between the connecting seat and the positioner.

7. An anti-vibration mounting bracket for a side-mounted control valve positioner according to any one of claims 1 to 5, characterised in that, Further comprising: Circuit board shock absorbing component, the circuit board shock absorbing component includes mounting column, screw, bushing and shock absorbing sleeve, one end of the mounting column is fixedly connected to the inner wall of the positioner, the screw passes through the bushing and is threadedly connected to the mounting column, the inside of the shock absorbing sleeve is attached to the outside of the bushing, and the outside of the shock absorbing sleeve is attached to the circuit board.

Images