Coal gasification shock reduction and noise reduction ceramic ball valve

Abstract

The utility model relates to metallurgical equipment technical field, concretely relates to a coal gasification shock attenuation noise reduction ceramic ball valve, including valve body, the inside lining of valve body is lined with inner lining, and the middle of valve body and inner lining sets up packing cavity, and packing cavity is equipped with packing group, and valve body, inner lining and packing group are crossed by valve rod, the utility model discloses the arc face sealing that is formed by the cooperation of valve seat and ball core, and then the valve core or valve seat abrasion problem caused by solid particle scouring is solved, at the same time, the valve seat sealing ring between valve seat and valve body is set up, and then the valve core or valve seat abrasion amount is compensated, and the valve rod shock pad and shock attenuation mechanism solve the vibration and vibration noise problem of valve.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a ceramic ball valve for reducing vibration and noise in coal gasification. Background Technology

[0002] Coal gasification technology, as a core component of clean coal chemical industry, is a key pillar of modern coal-to-methanol, ethylene glycol, and synthetic ammonia industries. Its processes are extremely demanding, typically involving high-temperature, high-pressure environments, and the media being high-pressure syngas rich in solid particles (such as coal powder and slag) or black water and ash water. These media possess extremely strong erosive and abrasive properties and are chemically corrosive, posing a severe challenge to the durability and reliability of valves—critical control equipment in the system. In particular, valves used in lock hopper circulation, flash evaporation, and discharge operations need to be frequently opened and closed and withstand enormous pressure differentials; their performance directly affects whether the entire gasification unit can achieve safe, stable, and long-term operation.

[0003] Under the aforementioned harsh operating conditions, traditional metal-sealed ball valves reveal significant technical shortcomings. Key components such as the valve core and seat are highly susceptible to wear under the continuous high-speed scouring of solid particles, leading to seal failure and internal leakage. This not only wastes energy but also poses safety hazards. More importantly, when high-pressure media pass through the widened valve orifice gap due to wear or undergo throttling, strong eddies and cavitation effects are easily generated, causing severe vibration and ear-piercing noise in the valve body and connected pipelines. This vibration accelerates fatigue damage to valve structural components and drive parts, while the noise deteriorates the working environment. These factors result in frequent downtime for maintenance and component replacement, increasing operating costs and severely restricting the continuity of coal gasification plant operation.

[0004] Therefore, it is necessary to invent a ceramic ball valve for reducing vibration and noise in coal gasification to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a ceramic ball valve for coal gasification with vibration reduction and noise reduction. By forming an arc-shaped seal through the cooperation of the valve seat and the ball core, the problem of wear of the valve core or valve seat caused by solid particles is solved. At the same time, a valve seat sealing ring is set between the valve seat and the valve body to compensate for the wear of the valve core or valve seat. Furthermore, the valve stem vibration damping pad and vibration reduction mechanism solve the problem of valve vibration and vibration noise, ensuring continuous operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a valve body, an inner liner inside the valve body, a packing cavity between the valve body and the inner liner, a packing assembly inside the packing cavity, a valve stem passing through the valve body, the inner liner, and the packing assembly, a valve stem anti-spraying boss in the middle section of the valve stem, a valve stem shock-absorbing pad between the valve stem anti-spraying boss and the inner liner, a ball core below the valve stem, valve seats on both sides of the ball core, and a shock-absorbing mechanism between the valve seats and the flange of the valve body.

[0007] Preferably, flanges are located on both sides of the valve body, and flange liners are installed inside the flanges.

[0008] Preferably, the inner end face of the flange liner is lower than the inner end face of the flange, and the vibration damping mechanism is installed in the vibration damping mechanism mounting hole in the flange, so that the bottom surface of the valve seat can fall onto the inner end face of the flange through the buffer of the vibration damping mechanism.

[0009] Preferably, the shock-absorbing mechanism includes a shock-absorbing spring, a spring slot, and a slot fixing spring. The spring slot has a slot fixing spring, the bottom end of the shock-absorbing spring is connected to the spring slot, and the shock-absorbing spring is fixed to the mounting hole of the shock-absorbing mechanism through the slot fixing spring.

[0010] Preferably, the shock-absorbing spring is wrapped with polytetrafluoroethylene.

[0011] Preferably, a noise-reducing ceramic orifice plate is installed at the outlet of the valve body, and the noise-reducing ceramic orifice plate is fixed by a noise-reducing ceramic orifice plate fixing pressure plate.

[0012] Preferably, the noise-reducing ceramic perforated plate is arranged with alternating large and small holes, the cross-sectional area of ​​all holes in the perforated plate is equal to the cross-sectional area of ​​the ball core flow channel, and the holes at the inlet end of the noise-reducing ceramic perforated plate are chamfered.

[0013] Preferably, the core material is zirconia-toughened alumina ceramic.

[0014] Preferably, the inner surface of the sphere core has a groove-like texture.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows: The valve stem damping shim is sandwiched between the valve stem anti-spraying protrusion and the valve body liner, achieving vibration damping through compression deformation. When the valve stem moves, the damping shim moves with the valve stem to ensure it remains in contact with the liner and continuously provides damping. Therefore, the valve stem damping shim is a dynamic vibration damping component. Its material is typically polytetrafluoroethylene (PTFE) or rubber, possessing good elasticity and wear resistance. Its main function is to absorb vibrations generated during media flow or valve opening and closing, reducing the transmission of vibration to the valve stem and body, and lowering the overall vibration noise of the valve. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a front sectional view of Embodiment 1 of the present invention; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a side view of Embodiment 1 of the present invention; Figure 4 This is a cross-sectional view of the valve stem in Embodiment 1 of this utility model; Figure 5 This is a perspective view of the noise-reducing ceramic perforated plate of Embodiment 1 of this utility model; Figure 6 This is a perspective view of the shock-reducing mechanism of Embodiment 1 of this utility model; Figure 7 This is a perspective view of the spherical core of Embodiment 2 of this utility model; Figure 8 This is a side view of the sphere core of Embodiment 2 of this utility model.

[0018] Explanation of reference numerals in the attached figures: 100. Valve body; 110. Vibration damping mechanism mounting hole; 120. Noise-reducing ceramic orifice plate; 130. Noise-reducing ceramic orifice plate fixing plate; 140. Grooved texture; 150. Valve seat sealing ring; 160. Packing block; 170. Flange inner end face; 180. Flange inner liner inner end face; 200. Liner; 210. Double-ended bolt; 220. Nut; 230. Valve body gasket; 240. Packing block fixing screw; 2 60. Valve seat bottom surface; 270. Fixing plate screw; 300. Packing cavity; 400. Packing assembly; 500. Valve stem; 501. Valve stem sealing ring; 502. Valve stem shock-absorbing pad; 503. Valve stem anti-spraying boss; 600. Ball core; 700. Valve seat; 800. Shock-reducing mechanism; 801. Shock-reducing spring; 802. Spring groove; 803. Groove fixing spring; 900. Flange; 910. Flange liner. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0020] Example 1: This utility model provides the following... Figure 1-6The illustrated gasification vibration-damping and noise-reducing ceramic ball valve includes a valve body 100, with an inner liner 200 inside. The valve body 100 is the basic load-bearing structure of the valve, providing the main channel for media flow and providing installation space for components such as the inner liner 200, packing chamber 300, and valve stem 500. The inner liner 200 (such as ceramic or corrosion-resistant metal, selected according to actual production requirements) directly contacts high-solids, high-pressure media, serving as the valve's first line of defense against media corrosion and erosion. The valve body 100 connects the inner liner 200, packing chamber 300, flange 900, and valve stem 500. The media enters the valve through the channels of the valve body 100, and the valve body 100 must withstand the high pressure and erosion of the media.

[0021] A packing cavity 300 is provided between the valve body 100 and the liner 200, lining the inside of the valve body 100 and directly contacting the medium (high-pressure synthesis gas, black water, grey water, etc.). This packing cavity isolates the medium from the metal substrate of the valve body 100, preventing corrosion of the valve body 100 by the medium (such as acidic components in synthesis gas or corrosive ions in black water). The liner 200 is typically made of wear-resistant and corrosion-resistant ceramic. The liner 200 is bonded or welded to the inner wall of the valve body 100, forming an integrated structure. Its inner surface must be smooth to reduce medium flow resistance, and it must maintain an appropriate clearance from moving parts such as the valve stem 500 and the ball core 600 to avoid jamming. A valve stem sealing ring 501 is installed between the valve stem 500 and the liner 200.

[0022] A packing assembly 400 is installed in the packing cavity 300, which is located between the valve body 100 and the valve stem 500. The packing assembly 400 is made of flexible sealing materials such as polytetrafluoroethylene (PTFE) or graphite. The packing assembly 400 achieves a dynamic seal between the valve stem 500 and the valve body 100 through compression deformation, preventing media leakage along the axial direction of the valve stem 500. A packing block 160 is installed above the packing assembly 400, and the packing block 160 is fixed to the valve body 100 by packing block fixing screws 240.

[0023] The valve body 100, liner 200, and packing assembly 400 are passed through by the valve stem 500. A valve stem anti-spraying boss 503 is provided in the middle section of the valve stem 500. A valve stem damping pad 502 is accommodated between the valve stem anti-spraying boss 503 and the liner 200. The valve stem anti-spraying boss 503 is located in the middle section of the valve stem 500 and is an integral structure with the valve stem 500 (or fixed to the valve stem 500 by welding or threaded connection), located within the packing cavity 300. Its upper end contacts the packing assembly 400, and its lower end mates with the liner 200 or the ball core 600 of the valve body 100. Through dimensional design, it limits the maximum displacement of the valve stem 500. The valve stem anti-spraying boss 503 is a mechanical limiting structure. Its core function is to prevent the valve stem 500 from being ejected due to excessive medium pressure or seal failure, thus avoiding safety accidents caused by the valve stem 500 flying out (such as injuring personnel or damaging surrounding equipment).

[0024] The valve stem damping pad 502 is sandwiched between the valve stem anti-spraying boss 503 and the valve body 100 liner 200, achieving damping through compression deformation. When the valve stem 500 moves, the damping pad moves with it to ensure that the damping pad 502 remains in contact with the liner 200, continuously providing damping. The valve stem damping pad 502 is a dynamic damping component. Its material is typically polytetrafluoroethylene (PTFE) or rubber, possessing good elasticity and wear resistance. Its main function is to absorb vibrations generated during media flow or valve opening and closing, reducing the transmission of vibration to the valve stem 500 and valve body 100, lowering overall valve vibration noise (such as high-frequency whistling), and simultaneously delaying wear between the valve stem 500 and the liner 200; thus ensuring continuous operation.

[0025] A ball core 600 is located below the valve stem 500, and valve seats 700 are mounted on both sides of the ball core 600. The ball core 600 is connected to the packing cavity 300 via the valve stem 500, and the rotation of the valve stem 500 drives the ball core 600 to rotate synchronously. The two sides of the ball core 600 cooperate with the valve seats 700 to form a sealing pair (when the ball core 600 rotates to the closed position, the ball core 600 and the valve seats 700 are in tight contact, cutting off the flow of the medium). The ball core 600 is the core opening and closing component of the valve, and the cutting off or opening of the medium is achieved by rotating around the axis of the valve stem 500. If necessary for production, the ball core 600 and the valve seats 700 form an arc-shaped seal.

[0026] The valve seat 700 and the ball core 600 form a face-to-face contact. An appropriate gap must be maintained between the valve seat 700 and the valve body 100 to ensure the flexibility of the ball core 600 during rotation. The valve seat 700 and the ball core 600 cooperate to form a sealing pair, achieving the valve's sealing function. The valve seat 700 must possess high hardness (such as a tungsten carbide coating) and wear resistance to resist the erosion of solid particles such as coal dust and slag, ensuring continuous operation.

[0027] A vibration damping mechanism 800 is provided between the valve seat 700 and the flange 900 of the valve body 100. The vibration damping mechanism 800 can reduce the generation of vibration and vibration noise in the present application during operation.

[0028] Flanges 900 are located on both sides of the valve body 100, and flange liners 910 are installed inside the flanges 900. Flanges 900 are key connecting components between the valve and external pipelines (such as the gasifier outlet and flash tank inlet), and the valve and pipeline are fixed into a complete piping system by flange bolts. This connection method has two core advantages: detachability (facilitating valve maintenance and replacement) and high sealing performance (preventing media leakage through the sealing gaskets between flanges 900). The flange liners 910 (such as polytetrafluoroethylene (PTFE) or fluoroplastics) inside the flanges 900 serve as the "first line of corrosion protection" for the valve body 100. The gasification media (such as H2S in high-pressure syngas, hydrochloric acid in black water, and coal slag particles) are highly corrosive. The flange liner 910 material, through chemical inertness (such as PTFE's resistance to acids, alkalis, and organic solvents) or wear resistance (such as fluoroplastics' erosion resistance), ensures a tight fit between the flange liner 910 and the flange 900 of the valve body 100 and the pipeline, forming a double sealing barrier: firstly, the surface seal of the flange liner 910 itself (the smooth surface of the liner 200 reduces media permeation channels); secondly, the gap seal after the flange 900 bolts are tightened (the liner 200 fills the tiny gap between the flange 900 surface and the pipeline flange 900). This design effectively prevents leakage of the gasification media (such as high-pressure syngas and black water) along the flange 900 connection, ensuring operational continuity.

[0029] The inner end face 180 of the flange liner is lower than the inner end face 170 of the flange to prevent the medium from contacting the flange liner 910 and to reduce wear and corrosion of the liner 200. The flange liner 910 and the valve seat 700 are sealed by a valve seat sealing ring 150; when gaps appear on the sealing surface due to wear, the elasticity of the valve seat sealing ring 150 pushes the valve seat 700 towards the ball core 600 to compensate for the wear. The flange 900 and the valve body 100 are connected by double-ended bolts 210 and locked by nuts 220, and sealed by a valve body gasket 230.

[0030] The flange liner 910 (such as PTFE) serves as a corrosion and erosion protection layer at the connection between the valve body 100 and the pipeline. However, its material is usually relatively soft (such as PTFE). If the inner end face is flush with the flange inner end face 170, the gasification medium (such as H2S in high-pressure syngas, hydrochloric acid in black water, and coal slag particles) will directly erode the flange liner 910, accelerating its wear or corrosion and leading to seal failure. The design of the flange liner inner end face 180 being lower than the flange inner end face 170 ensures that when the medium enters the flange 900 connection, it first passes through the "transition area" of the flange inner end face 170 before contacting the flange liner 910, thereby extending the service life of the flange liner 910. The vibration damping mechanism 800 is installed in the vibration damping mechanism mounting hole 110 in the flange 900. The vibration damping mechanism 800 is a "key actuator" of the valve vibration damping system and needs to withstand multi-directional vibrations (lateral, radial, and axial) generated by medium flow and valve opening and closing for a long time. The mounting holes in flange 900 provide precise installation positioning for vibration damping mechanism 800 (preventing it from shifting during vibration), and it is secured to flange 900 with bolts and other fasteners, ensuring a firm connection between it and valve seat 700 and valve body 100. This design prevents vibration damping mechanism 800 from loosening due to vibration (thus maintaining the vibration damping effect), while adapting to extreme working conditions in coal gasification (such as high pressure differential and high solid particle concentration), ensuring the long-term effectiveness of the vibration damping function and guaranteeing continuous operation.

[0031] The bottom surface 260 of the valve seat can rest on the inner end face 170 of the flange through the buffer of the shock-absorbing mechanism 800. The valve seat 700 is a "sealing mating component" of the ball core 600 and needs to withstand the impact vibration of the ball core 600 during rotation (such as the collision between the ball core 600 and the valve seat 700) and the pressure fluctuation of the medium flow. The shock-absorbing mechanism 800 has elastic buffering characteristics, which can absorb these vibration energies (convert kinetic energy into heat energy for dissipation), reduce the noise generated by vibration, and at the same time reduce the transmission of vibration to the flange 900 and the valve body 100.

[0032] The shock-absorbing mechanism 800 includes a shock-absorbing spring 801, a spring slot 802, and a slot fixing spring 803. The spring slot 802 has a slot fixing spring 803. The bottom end of the shock-absorbing spring 801 is connected to the spring slot 802. The shock-absorbing spring 801 is fixed to the shock-absorbing mechanism mounting hole 110 through the slot fixing spring 803.

[0033] The damping spring 801 in the damping mechanism 800 is the core damping element, which absorbs the multi-directional vibration generated during valve operation through its elastic deformation. The elastic characteristics of the damping spring 801 can effectively attenuate vibration energy, thereby reducing the transmission of vibration to the flange 900, valve body 100 and connected pipelines. Therefore, the above solution can avoid component loosening or vibration noise caused by vibration.

[0034] The retaining spring 803 is a key component connecting the spring retaining groove 802 and the vibration damping mechanism mounting hole 110. Through the elastic deformation of the retaining spring 803, it can be firmly pressed against the inner wall of the mounting hole, fixing the entire vibration damping mechanism 800 in the designated position on the flange 900. This fixing method ensures that the mechanism will not loosen during valve operation and can adapt to the high pressure differential under coal gasification conditions.

[0035] The spring slot 802 is used to fix the bottom end of the shock-absorbing spring 801 (connected by welding) to form the spring's "mounting base". This design ensures that the spring will not shift or fall off when under force, maintaining its elastic stability and ensuring continuous operation.

[0036] By using the damping spring 801 for cushioning and the retaining plate 803 for fixing, this solution can effectively reduce the negative impact of vibration on the valve seat 700, valve body 100, and valve stem 500 components. For example, it reduces the impact vibration between the valve seat 700 and the ball core 600, reduces wear on the sealing surface, prevents cracks in the valve body 100 due to vibration, and ensures continuous operation.

[0037] The shock-absorbing spring 801 is wrapped with polytetrafluoroethylene (PTFE). PTFE has extremely strong chemical stability and can withstand the erosion of various corrosive media such as strong acids, strong alkalis, and organic solvents. In coal gasification processes, the media inside valves (such as H2S in high-pressure syngas, hydrochloric acid in black water, and coal slag particles) are highly corrosive. The PTFE-wrapped shock-absorbing spring 801 effectively prevents it from failing due to media corrosion, extending its service life.

[0038] The surface of polytetrafluoroethylene is smooth and has a relatively low coefficient of friction (static coefficient of friction of about 0.04 and dynamic coefficient of friction of about 0.05). When wrapped around the surface of the shock-absorbing spring 801, it can reduce the friction between the shock-absorbing spring 801 and surrounding components (such as spring slot 802 and valve seat 700), reduce the wear rate of the shock-absorbing spring 801 during frequent compression / tensioning, and ensure continuous operation.

[0039] The low-friction properties of polytetrafluoroethylene (PTFE) not only reduce the vibration loss of the spring itself, but also reduce the efficiency of vibration transmission to other valve components (such as valve body 100 and valve stem 500). This helps reduce high-frequency noise during operation. In the coal gasification process, the PTFE-coated spring maintains stable performance under these conditions, without deforming due to high pressure or softening due to high temperature, ensuring the long-term effectiveness of the vibration damping mechanism 800.

[0040] A noise-reducing ceramic orifice plate 120 is installed at the outlet of valve body 100. The noise-reducing ceramic orifice plate 120 is fixed by a noise-reducing ceramic orifice plate fixing plate 130. The core function of the noise-reducing ceramic orifice plate 120 is to disperse the fluid flow energy through its porous structure, reducing turbulence and impact noise. When high-pressure fluid (such as coal gasification syngas or black water) passes through the outlet of valve body 100, the dense small holes of the orifice plate will divide the fluid into multiple small flow streams, making the fluid velocity uniform and preventing high-speed fluid from directly impacting the inner wall of downstream pipes or valve components, thus generating high-frequency noise. The noise-reducing ceramic orifice plate 120 is fixed at the outlet of valve body 100 by the noise-reducing ceramic orifice plate fixing plate 130. This design has two key functions: first, to prevent the orifice plate from shifting (avoiding the orifice plate from falling off due to fluid impact or vibration, affecting the noise reduction effect); second, to enhance the structural strength (the pressure plate can withstand fluid pressure, preventing the orifice plate from deforming due to high pressure). The noise-reducing ceramic orifice plate fixing plate 130 is locked to flange 900 by fixing plate screws 270.

[0041] The noise-reducing ceramic orifice plate 120 features an alternating layout of orifices of varying sizes. This arrangement, combining orifices of different diameters, can specifically address noise at different frequencies. Smaller orifices (typically 1mm-3mm in diameter) primarily absorb high-frequency noise (such as the sharp whistling of flowing media), while larger orifices (typically 3.5mm-10mm in diameter) target mid-to-low-frequency noise (such as the impact sound of valve opening and closing). This combined layout broadens the sound absorption bandwidth, avoiding the problem of insufficient absorption of specific frequency noise by orifice plates with a single orifice diameter. This allows the noise-reducing ceramic orifice plate 120 to more comprehensively cover the broadband noise generated by the flow of gasification media, improving overall noise reduction efficiency.

[0042] The sum of the cross-sectional areas of all the orifice plates is equal to the cross-sectional area of ​​the 600mm spherical core flow channel. When the total cross-sectional area of ​​all the orifice plates equals the cross-sectional area of ​​the 600mm spherical core flow channel, the total flow area of ​​the medium through the orifice plate matches the cross-sectional area of ​​the flow channel, preventing a sharp increase in medium velocity due to abrupt changes in cross-sectional area. This effectively reduces pressure loss in the medium flow.

[0043] The inlet hole of the noise reduction ceramic orifice plate 120 is chamfered; the chamfering of the inlet hole (usually a 45° chamfer) can eliminate the sharp edge of the orifice, making the medium enter the orifice plate more smoothly.

[0044] Example 2: Figure 7-8 As shown, the difference between this embodiment and Embodiment 1 is that the core 600 is made of zirconia-toughened alumina ceramic, which can withstand the strong corrosive media (such as H2S, hydrochloric acid, sodium hydroxide, etc.) in the coal gasification process. The surface of the core 600 is not easily corroded and damaged by the media, thus avoiding dimensional changes in the core 600 due to corrosion.

[0045] The inner surface of the spherical core 600 has a pre-reserved groove-like texture 140 (specifically located on the inner surface of the transverse straight channel on the side of the spherical core 600). The groove-like texture 140 disturbs the boundary layer airflow on the surface of the spherical core 600, causing the boundary layer to change from laminar flow to turbulent flow, reducing premature separation of the airflow behind the spherical core 600, and reducing pressure differential resistance (which accounts for approximately the main part of fluid resistance). This design can significantly improve the stability of the spherical core 600 in high-speed flow (such as the flow velocity of the gasification medium passing through the valve), avoid vibration or swaying caused by airflow turbulence, and thus avoid the generation of vibration noise; ensuring continuous operation.

[0046] The grooved texture 140 serves as a positioning reference for the ball core 600 and valve seat 700 or other components, ensuring that the ball core 600 is in the correct position during assembly. This positioning function prevents the ball core 600 from rotating or shifting due to vibration or impact during use, avoids vibration noise, maintains alignment with the valve seat 700, and maintains consistent sealing performance.

[0047] The other design schemes in this embodiment are the same as those in Embodiment 1.

[0048] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A ceramic ball valve for reducing vibration and noise in coal gasification, comprising a valve body, characterized in that, The valve body is lined with an inner liner, and a packing cavity is provided between the valve body and the inner liner. The packing cavity contains a packing assembly. The valve body, the inner liner, and the packing assembly are passed through by the valve stem. A valve stem anti-spraying boss is provided in the middle section of the valve stem. A valve stem damping pad is accommodated between the valve stem anti-spraying boss and the inner liner. A ball core is provided below the valve stem. Valve seats are installed on both sides of the ball core. A shock-absorbing mechanism is provided between the valve seats and the flange of the valve body.

2. The coal gasification vibration reduction and noise reduction ceramic ball valve as described in claim 1, characterized in that, The flanges are located on both sides of the valve body, and the flanges are lined with flange liners.

3. The coal gasification vibration reduction and noise reduction ceramic ball valve as described in claim 2, characterized in that, The inner end face of the flange liner is lower than the inner end face of the flange. The vibration damping mechanism is installed in the vibration damping mechanism mounting hole in the flange, and the bottom surface of the valve seat can fall onto the inner end face of the flange through the buffer of the vibration damping mechanism.

4. The coal gasification vibration reduction and noise reduction ceramic ball valve as described in claim 3, characterized in that, The shock-absorbing mechanism includes a shock-absorbing spring, a spring slot, and a slot fixing spring. The spring slot has a slot fixing spring, the bottom end of the shock-absorbing spring is connected to the spring slot, and the shock-absorbing spring is fixed to the mounting hole of the shock-absorbing mechanism through the slot fixing spring.

5. The coal gasification vibration reduction and noise reduction ceramic ball valve as described in claim 4, characterized in that, The shock-absorbing spring is wrapped with polytetrafluoroethylene.

6. The coal gasification vibration reduction and noise reduction ceramic ball valve as described in claim 1, characterized in that, The valve body is equipped with a noise-reducing ceramic orifice plate at its outlet, and the noise-reducing ceramic orifice plate is fixed by a noise-reducing ceramic orifice plate fixing pressure plate.

7. The coal gasification vibration reduction and noise reduction ceramic ball valve as described in claim 6, characterized in that, The noise-reducing ceramic perforated plate is arranged with holes of varying sizes, and the cross-sectional area of ​​all holes in the perforated plate is equal to the cross-sectional area of ​​the ball core flow channel. The holes at the inlet end of the noise-reducing ceramic perforated plate are chamfered.

8. The coal gasification vibration reduction and noise reduction ceramic ball valve as described in claim 1, characterized in that, The core material is zirconia-toughened alumina ceramic.

9. The coal gasification vibration reduction and noise reduction ceramic ball valve as described in claim 8, characterized in that, The inner surface of the sphere has a pre-reserved groove-like texture.

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