Power plant automatic control instrument device with anti-vibration function

Abstract

The invention discloses a power plant automatic control instrument device with an anti-vibration function, which comprises a base plate, an instrument bottom box is fixedly arranged on the upper surface of the base plate, at least three side buffer devices are uniformly and fixedly arranged on the outer wall of the instrument bottom box, a top plate is fixedly arranged at the tops of the side buffer devices, and a damping buffer device is arranged between the instrument bottom box and the top plate. The damping buffer device comprises a fixing plate, a magnetic buffer mechanism and damping mechanisms, the upper side face of the fixing plate is connected with the top plate, the middle of the lower side face of the fixing plate is flexibly connected with the instrument bottom box through the magnetic buffer mechanism, and the outer side of the lower side face of the fixing plate is in damping connection with the instrument bottom box through the multiple damping mechanisms. The magnetic buffering mechanism is good in anti-oscillation effect by utilizing the same-polarity repulsion effect of magnets; and the damping mechanism can absorb high-frequency vibration and can quickly eliminate oscillation under vibration, so that the top plate is quickly recovered to be stable. The device has a better vibration reduction and prevention effect, and error information or damage caused by vibration of the instrument can be reduced.

Description

Technical Field

[0001] This invention relates to the field of vibration-damping installation technology for electrical components, and more particularly to an instrument device with vibration-damping function for power plant automation control. Background Technology

[0002] Existing power plant automation control instruments have poor vibration damping. Internal sensors, such as diaphragms in pressure transmitters and turbines in flow meters, are prone to mechanical displacement during vibration, causing measured values ​​to deviate from the true values. Vibration can also loosen instrument terminals and cause solder joints to fall off, resulting in interruptions or distortions in current and voltage signal transmission. This leads to the control system receiving incorrect data, causing frequent malfunctions in the regulating mechanism. Pointer shafts and gears in pointer-type instruments are easily worn under continuous vibration, causing pointer jamming or scale deviation. In electronic instruments, PCB boards, capacitors, resistors, and other components experience high-frequency resonance due to vibration, increasing the probability of solder joint cracking. Therefore, this invention is proposed. In the prior art, Chinese patent document CN213575333U, published on June 29, 2021, discloses an adjustable and variable shockproof device for instruments, including a base, a support plate on the top of the base, multiple insertion holes on the outer surface of the support plate, a first insertion plate on the outer surface of the support plate, and the first insertion plate being slidably connected to the support plate. A pull ring is provided on one side of the first insertion plate, and a first fixing plate is provided on the top of the base, with a threaded rod on the top of the first fixing plate. In this invention, the first insertion plate is inserted into the insertion holes, fixing the height of the first fixing plate. This prevents the instrument from shaking due to the installation of the adjustable and variable shockproof device, thus affecting its use. A sleeve is provided on the top of the connecting plate; inserting the sleeve into the top of the connecting plate prevents taller instruments from tipping over due to excessive vibration. However, the device only uses springs for vibration damping. After vibration occurs, the first fixed plate and the instrument above it will repeatedly bounce up and down, making it difficult for the device to achieve the ideal vibration damping effect. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an instrument device with anti-vibration function for power plant automation control, which can absorb high-frequency vibrations during equipment operation, has a better vibration reduction effect, and reduces the number of instruments that issue incorrect information or are damaged due to vibration.

[0004] To achieve the above-mentioned technical features, the present invention aims to provide an instrument device with vibration damping function for power plant automation control, comprising a base plate, an instrument base box fixedly mounted on the upper surface of the base plate, at least three side buffer devices evenly distributed and fixedly mounted on the outer wall of the instrument base box, a top plate fixedly mounted on the top of the side buffer devices, and a damping buffer device installed between the instrument base box and the top plate. The damping buffer device comprises a fixed plate, a magnetic buffer mechanism, and a damping mechanism. The upper side of the fixed plate is connected to the top plate, the middle part of the lower side of the fixed plate is flexibly connected to the instrument base box through the magnetic buffer mechanism, and the outer side of the lower side of the fixed plate is dampedly connected to the instrument base box through multiple damping mechanisms.

[0005] The side buffer device includes a side fixing cylinder, a first vertical shaft, an elastic ring, and a second vertical shaft. The first and second vertical shafts are slidably inserted into the upper and lower ends of the side fixing cylinder, respectively. The elastic ring is located inside the side fixing cylinder and between the first and second vertical shafts. The lower end of the first vertical shaft and the upper end of the second vertical shaft are fixedly connected to the elastic ring, respectively. The upper end of the first vertical shaft is fixedly connected to the top plate, and the lower end of the second vertical shaft is connected to the base plate.

[0006] The elastic ring is configured as an elliptical ring, with the two ends of the short axis of the elastic ring connected and fixed to the first vertical axis and the second vertical axis, respectively.

[0007] The magnetic buffer mechanism includes a bottom outer tube, an inner movable tube, a first magnet, and a second magnet. The upper end of the inner movable tube is fixedly connected to a fixed plate, and the lower end of the bottom outer tube is fixedly connected to the instrument base box. The lower end of the inner movable tube is movably inserted from the upper end of the bottom outer tube. The first magnet is fixedly connected to the lower end of the inner movable tube, and the second magnet is fixedly connected to the bottom of the bottom outer tube. The magnetic poles on opposite sides of the first magnet and the second magnet are the same.

[0008] The lower end of the inner moving tube is also fixedly connected to a pushing cylinder, the first magnet is fixedly connected to the bottom of the pushing cylinder, and at least one flexible ring is provided on the outer circumference of the pushing cylinder.

[0009] The damping mechanism includes a sleeve and an arc plate. The sleeve is horizontally fixed to the bottom of the inner wall of the instrument base box. The upper end of the arc plate is fixed to the bottom of the fixed plate. The lower end of the arc plate extends outward and moves into the sleeve. Multiple semi-circular damping blocks are respectively provided on both sides of the arc plate on the inner wall of the sleeve. Buffer semi-circular plates are respectively fixed on both sides of the corresponding semi-circular damping blocks at the lower end of the arc plate. The buffer semi-circular plates and the semi-circular damping blocks are in sliding damping cooperation.

[0010] A damping ring is fixedly installed at the middle position of the lower end of the arc-shaped plate. The side of the damping ring away from the arc-shaped plate abuts against an elastic baffle. The upper and lower ends of the elastic baffle are fixedly installed on both sides of the inner wall of the sleeve.

[0011] A limit stop is slidably provided on the outer side of the middle part of the arc plate. The bottom of the limit stop is fixedly provided on the bottom of the inner wall of the instrument box, and the top of the limit stop is adapted to the curvature of the arc plate.

[0012] The damping buffer device also includes a telescopic slide rod, which is located between the fixed plate and the instrument base box, with both ends of the telescopic slide rod being fixedly connected to the fixed plate and the instrument base box, respectively.

[0013] The fixed plate has a cross-shaped structure. Damping mechanisms are installed at two opposite ends of the cross-shaped structure, and telescopic sliding rods are installed at the other two opposite ends. At least three damping buffer devices are provided. The three damping buffer devices are arranged in an equilateral triangle. The three damping buffer devices are located at the midpoints of the three sides of the equilateral triangle, and the damping mechanisms are arranged along the sides of the equilateral triangle.

[0014] The present invention, which adopts the above technical solution, has the following prominent features compared with the prior art: The base plate of this invention is used for fixed installation on a pre-set base, and the top plate is used to install instruments. Side buffer devices provide initial cushioning, and their circular, evenly distributed arrangement around the top plate provides more stable support, preventing tilting during vibration damping. The instrument base and top plate combine to form a box structure, which isolates the magnetic field. The damping buffer device includes a magnetic buffer mechanism and a damping mechanism. The magnetic buffer mechanism utilizes the repulsive force of like poles in magnets to avoid the "rigid collision" that occurs in traditional spring damping under large amplitudes. The magnetic buffer mechanism relies on the magnetic field to dissipate energy, resulting in good anti-oscillation performance and significant fatigue resistance. The damping mechanism absorbs high-frequency vibrations, quickly eliminating oscillations and allowing the top plate to quickly return to stability. Through the above structure, this device has better vibration reduction and anti-vibration effects, reducing the likelihood of instruments emitting incorrect information or being damaged due to vibration, and providing a reliable data foundation for the safe operation and intelligent management of the unit. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional exploded view of the bottom outer tube and inner movable tube of the present invention; Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the instrument base box of the present invention; Figure 4 This is a schematic diagram of the internal three-dimensional structure of the instrument base box of the present invention; Figure 5This is a three-dimensional exploded view of the side-fixed cylinder structure of the present invention; Figure 6 This is a schematic diagram of the front structure of the present invention; Figure 7 This is a side view of the present invention; In the diagram: 1. Base plate; 2. Instrument base box; 3. Inner moving plate; 4. Top plate; 5. Side fixing cylinder; 6. Bottom vertical plate; 7. Fixing plate; 8. Sleeve; 9. Slide groove; 10. Bottom outer tube; 11. Blocking plate; 12. Slide rail; 13. First circular plate; 14. First vertical shaft; 15. Vertical groove; 16. Elastic ring; 17. Second circular plate; 18. Second vertical shaft; 19. Square groove; 20. Telescopic slide rod; 21. Arc plate; 22. Elastic baffle; 23. Instrument; 24. Semicircular damping block; 25. First magnet; 26. Second magnet; 27. Limiting block; 28. Damping ring; 29. ​​Pushing cylinder; 30. Inner moving tube; 31. Buffer semicircular plate; 32. Flexible ring. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0019] See Figures 1 to 7 An instrument device with vibration damping function for power plant automation control includes a base plate 1. An instrument base box 2 is fixed on the upper surface of the base plate 1. At least three side buffer devices are evenly distributed and fixed on the outer wall of the instrument base box 2. A top plate 4 is fixed on the top of the side buffer devices. A damping buffer device is installed between the instrument base box 2 and the top plate 4. The damping buffer device includes a fixed plate 7, a magnetic buffer mechanism, and a damping mechanism. The upper side of the fixed plate 7 is connected to the top plate 4. The middle part of the lower side of the fixed plate 7 is flexibly connected to the instrument base box 2 through the magnetic buffer mechanism. The outer side of the lower side of the fixed plate 7 is dampedly connected to the instrument base box 2 through multiple damping mechanisms.

[0020] The base plate 1 is used for fixed installation on the preset base, and the top plate 4 is used to install the instrument 23. Side buffer devices provide initial cushioning, and are evenly distributed in a ring around the top plate 4, providing more stable support and preventing tilting during vibration damping. The damping buffer device includes a magnetic buffer mechanism and a damping mechanism. The magnetic buffer mechanism utilizes the repulsive force of like poles in magnets to avoid the "rigid collision" that occurs in traditional spring damping under large amplitudes. The magnetic buffer mechanism relies on the magnetic field to dissipate energy, resulting in good anti-oscillation effect and significant fatigue resistance. The instrument base 2 and the top plate 4 combine to form a box structure, which can isolate the magnetic field. The damping mechanism can absorb high-frequency vibrations and quickly eliminate oscillations, allowing the top plate 4 to quickly return to stability. Through the above structure, this device has a better vibration reduction and anti-vibration effect, reducing the likelihood of instruments emitting incorrect information or being damaged due to vibration.

[0021] See Figure 5 The side buffer device includes a side fixing cylinder 5, a first vertical shaft 14, an elastic ring 16, and a second vertical shaft 18. The first vertical shaft 14 and the second vertical shaft 18 are slidably inserted into the upper and lower ends of the side fixing cylinder 5, respectively. The elastic ring 16 is located inside the side fixing cylinder 5 and between the first vertical shaft 14 and the second vertical shaft 18. The lower end of the first vertical shaft 14 and the upper end of the second vertical shaft 18 are fixedly connected to the elastic ring 16, respectively. The upper end of the first vertical shaft 14 is connected and fixed to the top plate 4, and the lower end of the second vertical shaft 18 is connected to the base plate 1. Through the above structure, it can play a preliminary buffering role and stably support the top plate 4.

[0022] Furthermore, the elastic ring 16 is configured as an elliptical ring, with its two ends of the short axis connected and fixed to the first vertical axis 14 and the second vertical axis 18, respectively. The elliptical elastic ring 16 is more effective at buffering the vertical movement of the first vertical axis 14, allowing the first vertical axis 14 and the top plate 4 to play a shock-absorbing role.

[0023] In this embodiment, a first circular plate 13 is fixedly disposed at the bottom of the first vertical shaft 14, and an elastic ring 16 is fixedly disposed at the bottom of the first circular plate 13. The elastic ring 16 is configured as an elliptical ring, which is located inside the square groove 19 in the middle of the side fixing cylinder 5. The elliptical elastic ring 16 is more likely to buffer the first vertical shaft 14 that moves up and down, so that the first vertical shaft 14 and the top plate 4 at the top play a shock absorption role. A second circular plate 17 is fixedly disposed at the bottom of the elastic ring 16, and a second vertical shaft 18 is fixedly disposed at the bottom of the second circular plate 17. The bottom of the second vertical shaft 18 is slidably inserted into the middle position of the bottom of the side fixing cylinder 5.

[0024] Furthermore, vertical grooves 15 are fixedly provided at both ends of the outer side of the side fixing cylinder 5. A slide rail 12 is slidably provided on the inner wall of the vertical groove 15. A blocking plate 11 is fixedly provided on the side of the slide rail 12 away from the vertical groove 15. The area of ​​the blocking plate 11 is larger than the area of ​​the square groove 19 inside the side fixing box. The blocking plate 11 slides on the inner wall of the vertical groove 15 through the slide rail 12, and the outer side of the side fixing cylinder 5 is sealed under the action of the blocking plate 11. See Figure 2 The magnetic buffer mechanism includes a bottom outer tube 10, an inner moving tube 30, a first magnet 25, and a second magnet 26. The upper end of the inner moving tube 30 is fixed to a fixed plate 7, and the lower end of the bottom outer tube 10 is fixed to an instrument base 2. The lower end of the inner moving tube 30 is movably inserted from the upper end of the bottom outer tube 10. The first magnet 25 is fixed to the lower end of the inner moving tube 30, and the second magnet 26 is fixed to the bottom of the bottom outer tube 10. The magnetic poles of the first magnet 25 and the second magnet 26 on opposite sides are the same. The first magnet 25 and the second magnet 26 are vertically arranged, and their magnetic poles on opposite sides are the same. Utilizing the repulsion of like poles, the first vertical axis 14 and the second vertical axis 18 can be effectively buffered when they move close together. During the movement of the inner moving tube 30, the first magnet 25 moves inside the bottom outer tube 10. When the first magnet 25 moves relative to the bottom outer tube 10, an eddy current effect is generated, achieving energy dissipation and good anti-vibration effect. In this embodiment, the bottom outer tube 10 is made of copper.

[0025] Furthermore, a pushing cylinder 29 is fixedly connected to the lower end of the inner moving tube 30, and the first magnet 25 is fixedly connected to the bottom of the pushing cylinder 29. At least one flexible ring 32 is provided on the outer circumference of the pushing cylinder 29. There is a gap between the flexible ring 32 and the bottom outer tube 10. By utilizing the gap between the circumference of the flexible ring 32 and the inner wall of the bottom outer tube 10, the air flow speed in the bottom outer tube 10 is controlled during the up and down movement of the inner moving tube 30, thereby further achieving the vibration suppression effect.

[0026] See also Figure 2The damping mechanism includes a sleeve 8 and an arc plate 21. The sleeve 8 is horizontally fixed to the bottom of the inner wall of the instrument base box 2. The upper end of the arc plate 21 is fixed to the bottom of the fixed plate 7. The lower end of the arc plate 21 extends outward and moves into the sleeve 8. Multiple semi-circular damping blocks 24 are respectively provided on both sides of the arc plate 21 on the inner wall of the sleeve 8. Buffer semi-circular plates 31 are respectively fixed on both sides of the lower end of the arc plate 21 corresponding to the semi-circular damping blocks 24. The buffer semi-circular plates 31 and the semi-circular damping blocks 24 are in sliding damping cooperation. With the above structure, when the top plate 4 vibrates, it drives the fixed plate 7 to move up and down. The fixed plate 7 drives the arc plate 21 to move. Since the arc plate 21 has a quarter circle arc, the arc plate 21 converts the longitudinal force into the transverse force and disperses the longitudinal vibration force. When the arc plate 21 moves, the outer buffer semicircular plate 31 contacts the outer side of the semicircular damping block 24. Under the sliding action of the semicircular damping block 24 and the buffer semicircular plate 31, the arc plate 21 is damped.

[0027] Furthermore, a damping ring 28 is fixedly installed at the middle position of the lower end of the arc-shaped plate 21. The side of the damping ring 28 away from the arc-shaped plate 21 abuts against the elastic baffle 22. The upper and lower ends of the elastic baffle 22 are fixedly installed on both sides of the inner wall of the sleeve 8. When the damping ring 28 moves continuously with the arc-shaped plate 21, it pushes the elastic baffle 22 to deform. When the downward force is released, the elastic baffle 22 resets and pushes the damping ring 28 and the arc-shaped plate 21 to move in the direction they came from, completing the reset work of the arc-shaped plate 21 and the cross-shaped fixing plate 7, forming a reciprocating motion trajectory.

[0028] Furthermore, since the curved plate 21 is generally made of a plastic material with a certain degree of flexibility, in order to guide the curved plate 21, a limit block 27 is slidably provided on the outer side of the middle part of the curved plate 21. The bottom of the limit block 27 is fixedly set on the bottom of the inner wall of the instrument base box 2, and the top of the limit block 27 is adapted to the curvature of the curved plate 21.

[0029] In this embodiment, see Figure 2 The damping buffer device also includes a telescopic slide rod 20, which is located between the fixed plate 7 and the instrument base 2. Both ends of the telescopic slide rod 20 are fixedly connected to the fixed plate 7 and the instrument base 2, respectively. The telescopic slide rod 20 adopts a sleeve structure with internal and external sliding connection. By sliding and telescopically extending the telescopic slide rod 20, the gap between the bottom outer tube 10 and the inner moving tube 30 is controlled, and the gap between the first magnet 25, the flexible ring 32 and the inner wall of the bottom outer tube 10 is also controlled.

[0030] See Figure 2 , 4In this embodiment, the fixed plate 7 has a cross-shaped structure. Damping mechanisms are installed at opposite ends of the cross, and telescopic slide rods 20 are installed at the other opposite ends. At least three damping buffer devices are provided, arranged in an equilateral triangle. Each of the three damping buffer devices is located at the midpoint of one of the three sides of the equilateral triangle, and the damping mechanisms are arranged along the sides of the equilateral triangle. The equilateral triangle has equal sides and symmetrical angles, making it one of the most stable geometric structures in a plane. This arrangement ensures that the forces acting on the three damping mechanisms are essentially the same. With the damping buffer devices located at the midpoints of the three sides of the equilateral triangle and arranged along the sides, when external loads are transmitted through the sides of the triangle, the damping devices at the midpoints can directly participate in the force transmission process, efficiently absorbing energy and further improving the vibration reduction and damping effect.

[0031] See Figure 3 An inner movable plate 3 is also installed on the lower side of the top plate 4 by screws, and the damping buffer device is connected to the inner movable plate 3. Specifically, the inner movable plate 3 extends into the instrument base box 2, further isolating the top magnetic field.

[0032] See Figure 1 A groove 9 is fixedly provided in the middle of the lower surface of the base plate 1. The top of the bottom vertical plate 6 is slidably provided on the inner wall of the groove 9. The inner wall of the groove 9 is trapezoidal. A trapezoidal slider is fixedly provided on the top of the bottom vertical plate 6 and matches the inner wall of the groove 9. A limit hole is provided in the middle of the bottom vertical plate 6. A fixing hole is fixedly provided near the edge of the base plate 1. The bottom vertical plate 6 slides on the inner wall of the groove 9 at the bottom of the base plate 1. When it is necessary to fix the instrument vertically, the bottom vertical plate 6 is slid to the bottom of the base plate 1 and then spot welded to fix it, thereby increasing the application range of the device.

[0033] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the invention. Modifications and variations made by those skilled in the art in accordance with the spirit of the invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An instrument device for power plant automation control with vibration damping function, comprising a base plate (1), characterized in that, The upper surface of the base plate (1) is fixed with an instrument base box (2). At least three side buffer devices are evenly distributed on the outer wall of the instrument base box (2). A top plate (4) is fixed on the top of the side buffer devices. A damping buffer device is installed between the instrument base box (2) and the top plate (4). The damping buffer device includes a fixed plate (7), a magnetic buffer mechanism and a damping mechanism. The upper side of the fixed plate (7) is connected to the top plate (4). The middle part of the lower side of the fixed plate (7) is flexibly connected to the instrument base box (2) through the magnetic buffer mechanism. The outer side of the lower side of the fixed plate (7) is dampedly connected to the instrument base box (2) through multiple damping mechanisms.

2. The instrument device with vibration prevention function for power plant automation control according to claim 1, characterized in that, The side buffer device includes a side fixing cylinder (5), a first vertical shaft (14), an elastic ring (16), and a second vertical shaft (18). The first vertical shaft (14) and the second vertical shaft (18) are slidably inserted into the upper and lower ends of the side fixing cylinder (5), respectively. The elastic ring (16) is located inside the side fixing cylinder (5) and between the first vertical shaft (14) and the second vertical shaft (18). The lower end of the first vertical shaft (14) and the upper end of the second vertical shaft (18) are fixedly connected to the elastic ring (16), respectively. The upper end of the first vertical shaft (14) is connected and fixed to the top plate (4), and the lower end of the second vertical shaft (18) is connected to the base plate (1).

3. The instrument device with vibration prevention function for power plant automation control according to claim 2, characterized in that, The elastic ring (16) is configured as an elliptical ring, and the two ends of the short axis of the elastic ring (16) are respectively connected and fixed to the first vertical axis (14) and the second vertical axis (18).

4. The instrument device with vibration prevention function for power plant automation control according to claim 1, characterized in that, The magnetic buffer mechanism includes a bottom outer tube (10), an inner moving tube (30), a first magnet (25), and a second magnet (26). The upper end of the inner moving tube (30) is fixed to the fixed plate (7), and the lower end of the bottom outer tube (10) is fixed to the instrument base box (2). The lower end of the inner moving tube (30) is movably inserted from the upper end of the bottom outer tube (10). The first magnet (25) is fixed to the lower end of the inner moving tube (30), and the second magnet (26) is fixed to the bottom of the bottom outer tube (10). The magnetic poles on the opposite side of the first magnet (25) and the second magnet (26) are the same.

5. The instrument device with vibration prevention function for power plant automation control according to claim 4, characterized in that, The lower end of the inner moving tube (30) is also fixedly connected to a pushing cylinder (29), and the first magnet (25) is fixedly connected to the bottom of the pushing cylinder (29). At least one flexible ring (32) is provided on the outer circumference of the pushing cylinder (29).

6. The instrument device with vibration prevention function for power plant automation control according to claim 1, characterized in that, The damping mechanism includes a sleeve (8) and an arc plate (21). The sleeve (8) is horizontally fixed to the bottom of the inner wall of the instrument base box (2). The upper end of the arc plate (21) is fixed to the bottom of the fixed plate (7). The lower end of the arc plate (21) extends outward and moves into the sleeve (8). Multiple semi-circular damping blocks (24) are respectively provided on both sides of the arc plate (21) on the inner wall of the sleeve (8). Buffer semi-circular plates (31) are respectively fixed on both sides of the corresponding semi-circular damping blocks (24) at the lower end of the arc plate (21). The buffer semi-circular plates (31) and the semi-circular damping blocks (24) are in sliding damping cooperation.

7. The instrument device with vibration prevention function for power plant automation control according to claim 6, characterized in that, A damping ring (28) is fixedly installed at the middle position of the lower end of the arc plate (21). The side of the damping ring (28) away from the arc plate (21) abuts against the elastic baffle (22). The upper and lower ends of the elastic baffle (22) are fixedly installed on both sides of the inner wall of the sleeve (8).

8. An instrument device with vibration prevention function for power plant automation control according to claim 6, characterized in that, A limit stop (27) is slidably provided on the outer side of the middle part of the arc plate (21). The bottom of the limit stop (27) is fixedly provided on the bottom of the inner wall of the instrument base box (2). The top of the limit stop (27) is adapted to the curvature of the arc plate (21).

9. An instrument device with vibration prevention function for power plant automation control according to claim 1, characterized in that, The damping buffer device also includes a telescopic slide rod (20), which is located between the fixed plate (7) and the instrument base box (2). Both ends of the telescopic slide rod (20) are fixedly connected to the fixed plate (7) and the instrument base box (2) respectively.

10. An instrument device with vibration prevention function for power plant automation control according to claim 9, characterized in that, The fixed plate (7) has a cross-shaped structure. Damping mechanisms are installed at the two opposite ends of the cross-shaped structure, and telescopic slide rods (20) are installed at the other two opposite ends. At least three damping buffer devices are provided. The three damping buffer devices are arranged in an equilateral triangle. The three damping buffer devices are located at the midpoints of the three sides of the equilateral triangle, and the damping mechanisms are arranged along the sides of the equilateral triangle.

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