Control valve vibration isolation noise reduction tailpipe, tailpipe device and installation method

Abstract

This application relates to the field of chemical industry technology. To address the problems of high amplitude and noise in existing systems composed of control valves, tail nozzles, and flash tanks, this application provides a vibration-isolated and noise-reducing tail nozzle for a control valve, a tail nozzle device, and an installation method. The vibration-isolated and noise-reducing tail nozzle includes a pipe body, multiple ceramic liner tubes coaxially sleeved within the pipe body, and multiple vibration-isolated and noise-reducing components. These components are located between the pipe body and the ceramic liner tubes and are coaxially sleeved on the outer periphery of their respective ceramic liner tubes. This tail nozzle can buffer and reduce the flow-induced vibration and cavitation noise caused by the instantaneous impact after cavitation of the medium within the ceramic liner tube flow channel, reducing cavitation noise within the pipe body. Simultaneously, it ensures that the first-order natural frequency of the pipe body is several times greater than the excitation force frequency of the flash tank body, effectively preventing resonance between the pipe body and the flash tank, protecting the flash tank and tail nozzle, improving production efficiency, and reducing maintenance costs.

Description

Technical Field

[0001] This invention belongs to the technical field of chemical industry, metallurgy and chemical industry, and specifically relates to a vibration isolation and noise reduction tailpipe of a control valve, a tailpipe device and an installation method. Background Technology

[0002] The tailpipe, also known as the feed pipe of the flash tank, is a key feed pipeline connected to the control valve and flash tank in chemical process plants such as coal chemical, acetic acid, hydrometallurgy, and wet oxidation. It depressurizes and cools the medium after flashing through the control valve before injecting it into the flash tank, achieving separation of the gas and liquid phases. However, currently, during long-term operation of chemical plants, the system consisting of the control valve, tailpipe, and flash tank suffers from high amplitude and noise, which can lead to fatigue failure of detachable connections and even resonance.

[0003] The main causes of vibration and noise in this system are: ① flow-induced vibration caused by flash cavitation of the medium; ② impact of the medium ejected from the tail nozzle on the anti-impact plate assembly at the bottom of the flash tank, causing tank vibration and thus system vibration; ③ the tail nozzle assembly is installed in the tank in the form of a cantilever beam. After the flow-induced vibration and the impact vibration of the tank, the vibration effects are superimposed. In addition, due to the limited length of the tail nozzle, the ejected medium impacts the tank wall and bottom of the flash tank laterally, which can easily cause resonance between the tail nozzle and the flash tank. This can lead to the detachment of the tank wall lining bricks and damage to the tail nozzle, which seriously restricts production efficiency and increases maintenance costs.

[0004] Therefore, it is urgent to design a vibration-isolation and noise-reducing tailpipe for the control valve, a tailpipe device, and an installation method to solve the above problems. Summary of the Invention

[0005] To address the issues of high amplitude and noise in the existing system consisting of the control valve, tail nozzle, and flash tank during operation, the present invention aims to provide a vibration-isolated and noise-reducing tail nozzle for the control valve. This design buffers and weakens the flow-induced vibration and cavitation noise caused by the instantaneous impact of cavitation in the ceramic-lined pipe channel, reducing cavitation noise within the pipe body. Simultaneously, it ensures that the first-order natural frequency of the pipe body is 2-5 times greater than the excitation frequency of the flash tank body, effectively preventing resonance between the pipe body and the flash tank, protecting the flash tank and tail nozzle, improving production efficiency, and reducing maintenance costs.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A vibration-isolation and noise-reducing tailpipe for a control valve includes a pipe body and multiple ceramic inner liner tubes coaxially sleeved within the pipe body, and further includes: Multiple first vibration isolation and noise reduction components are located between the pipe body and the ceramic inner liner tube, and are coaxially sleeved on the outer periphery of the corresponding ceramic inner liner tube, for vibration isolation and noise reduction of the pipe body; The second vibration isolation and noise reduction component is fitted around the outer periphery of the tube body to prevent resonance between the tube body and the flash tank.

[0008] Furthermore, the first vibration isolation and noise reduction component includes: The first vibration isolation and noise reduction component is coaxially sleeved on the outer periphery of the corresponding ceramic inner liner tube; Multiple second vibration isolation and noise reduction components are respectively fitted onto the outer periphery and inner wall of the first vibration isolation and noise reduction component.

[0009] Furthermore, the first vibration isolation and noise reduction component is made of rubber or engineering plastic, and the second vibration isolation and noise reduction component is made of soft, high-temperature resistant packing material.

[0010] Furthermore, the second vibration isolation and noise reduction component includes: The protective cap is installed at the discharge end of the tube body to limit the movement of the ceramic inner lining tube; Multiple stiffeners are arranged around the outer periphery of the tube body, and their ends are connected to the lower end of the protective cap to cooperate with the protective cap and prevent the tube body from resonating.

[0011] The second objective of this invention is to provide a tail spray device, comprising a flash tank, a tank cover, a control valve, and a vibration-damping and noise-reducing tail spray pipe, wherein the tank cover is located at the feed inlet of the flash tank, the pipe body of the vibration-damping and noise-reducing tail spray pipe is located on the tank cover, the control valve is connected to the upper end of the pipe body and is located outside the flash tank, and the vibration-damping and noise-reducing tail spray pipe is located inside the flash tank.

[0012] The third objective of this invention is to provide a method for installing a tail spray device, wherein the method employs an installation fixture to install a vibration-damping and noise-reducing tail spray pipe onto a flash tank, the installation fixture comprising: The straightening frame is fixed to the ground and is concentrically set with the pipe body; The hoisting device, used in conjunction with the straightening frame, is used for assembling and installing vibration-damping and noise-reducing tailpipes.

[0013] Furthermore, the straightening frame includes: The frame is connected to the ground; Multiple straightening sleeves are spaced apart from top to bottom inside the frame to limit the position of the tube body and the ceramic lining tube.

[0014] Furthermore, the hoisting device includes: Rings; The load-bearing rod has a detachable connection at the upper end to the lifting ring, and multiple ceramic inner lining tubes are fitted around the outer circumference of the rod body to match the load-bearing rod. The load-bearing block is detachably connected to the lower end of the load-bearing rod and matches the inner diameter of the corresponding ceramic liner tube.

[0015] Furthermore, the installation method includes: Connect the pipe body to the tank lid and erect the frame; The ceramic inner liner pipe and vibration isolation and noise reduction components are assembled using a hoisting device and then hoisted to the pipe body to form the tail nozzle. Remove the installation fixtures, install the protective cap and stiffening plate, and then install the tank cover on the flash tank.

[0016] Furthermore, the process of assembling the tailpipe includes: With the end of the load-bearing rod corresponding to the feed inlet of the pipe facing downwards, and a lifting ring installed on the upper end of the load-bearing rod; Multiple ceramic inner liner tubes and corresponding vibration isolation and noise reduction components are connected together to obtain multiple ceramic vibration isolation sleeve components; Multiple ceramic vibration isolation sleeve assemblies are sequentially fitted onto the outer circumference of the load-bearing rod from the lower end of the rod body; Install a load-bearing block at the lower end of the load-bearing rod.

[0017] The beneficial effects of this invention are: This invention discloses a vibration-damping and noise-reducing tailpipe, tailpipe device, and installation method. Compared with the prior art, the improvement of this invention lies in: (1) The present invention can isolate and reduce the noise of the pipe body in two dimensions by combining the first vibration isolation and noise reduction component and the second vibration isolation and noise reduction component. The first vibration isolation and noise reduction component is set between the pipe body and the ceramic liner tube. It can buffer and reduce the flow-induced vibration and cavitation noise caused by the instantaneous impact after the medium cavitates in the flow channel of the ceramic liner tube. At the same time, it can also combine the different material characteristics of the ceramic liner tube and the pipe body to generate the impedance mismatch effect of noise and reduce the cavitation noise in the pipe body.

[0018] The second vibration isolation and noise reduction component is installed on the outer periphery of the pipe body. While keeping the pipe body length unchanged, it increases the rigidity of the pipe body, so that the first natural frequency of the pipe body is 2-5 times greater than the excitation frequency of the flash tank body. This effectively avoids resonance between the pipe body and the flash tank, protects the flash tank and the tail nozzle, improves production efficiency and reduces maintenance costs. In addition, the stiffening plate can also effectively suppress the lateral vibration of the pipe body, increase the bending fatigue strength at the root of the pipe body flange, and reduce the risk of the ceramic liner pipe being squeezed or even crushed.

[0019] (2) The vibration isolation and noise reduction component of the present invention is composed of a first vibration isolation and noise reduction component and a second vibration isolation and noise reduction component. The two vibration isolation and noise reduction components are made of different materials. The vibration isolation and noise reduction effect on the tail nozzle is enhanced by different materials. The first vibration isolation and noise reduction component also protects the side and upper and lower ends of the ceramic inner liner tube to avoid friction damage to the ends of the two adjacent ceramic inner liner tubes during hoisting and use, as well as to protect the contact between the tube and the straightening sleeve.

[0020] (3) The present invention uses a set of installation tools, including a straightening frame and a hoisting device. The straightening frame and the hoisting device work together to facilitate the assembly of the tail nozzle and connect the tail nozzle to the cover of the flash tank. It also facilitates the later maintenance of the tail nozzle and is highly practical. Attached Figure Description

[0021] Figure 1 This is a diagram showing the application of the vibration isolation and noise reduction nozzle of the present invention on a flash tank; Figure 2 This is a cross-sectional view of the vibration isolation and noise reduction component of the present invention; Figure 3 This is a cross-sectional view of the vibration isolation and noise reduction tail nozzle of the present invention; Figure 4 This is a cross-sectional view of the tube body of the present invention; Figure 5 This is a front view of the straightening frame of the present invention; Figure 6 This is a top view of the straightening frame of the present invention; Figure 7 This is a diagram showing the usage state of the straightening frame of the present invention; Figure 8 This is an installation diagram of the ceramic inner liner tube and vibration isolation and noise reduction components assembled according to the present invention. The components include: 1. Pipe body; 101. Protective cap; 102. Rib plate; 2. Ceramic inner lining pipe; 3. Vibration isolation and noise reduction assembly; 301. First vibration isolation and noise reduction component; 3011. First splicing block; 3012. Second splicing block; 302. Second vibration isolation and noise reduction component; 4. Straightening frame; 401. Frame body; 402. Straightening sleeve; 5. Lifting device; 501. Lifting ring; 502. Load-bearing rod; 503. Load-bearing block; 6. Flash tank; 7. Control valve; 8. Tank cover. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0023] Example 1: See attached document Figures 1-4 The illustrated vibration-damping and noise-reducing tailpipe of a control valve includes a pipe body 1, a ceramic inner liner pipe 2, multiple first vibration-damping and noise-reducing components 3, and a second vibration-damping and noise-reducing component. Multiple ceramic inner liner pipes 2 are stacked inside the pipe body 1 and coaxially arranged with the pipe body 1. Multiple vibration-damping and noise-reducing components 3 are located between the pipe body 1 and the ceramic inner liner pipes 2 and are coaxially sleeved on the outer periphery of the corresponding ceramic inner liner pipes 2. The second vibration-damping and noise-reducing component is sleeved on the outer periphery of the pipe body to prevent resonance between the pipe body and the flash tank. This allows the pipe body 1 to achieve vibration-damping and noise-reducing effects from two dimensions through the first and second vibration-damping and noise-reducing components during use.

[0024] The tail nozzle in this embodiment consists of a pipe body 1, multiple ceramic inner liner tubes 2, and multiple vibration isolation and noise reduction components 3. The multiple ceramic inner liner tubes 2 are stacked and sleeved on the outer periphery of the pipe body 1 along the length direction of the pipe body 1, and the ceramic inner liner tube 2 located at the feed end of the pipe body 1 is stuck at the opening of the pipe body 1 and will not slide out of the pipe body 1 due to gravity. The multiple vibration isolation and noise reduction components 3 are sleeved on the outer periphery of the ceramic inner liner tubes 2 in the same way as the ceramic inner liner tubes 2.

[0025] See attached document Figure 1 As shown in the embodiment of this application, the tail nozzle can be installed at the feed inlet of the flash tank 6 to isolate vibration and reduce noise of the medium flowing out from the control valve 7, thereby extending the performance and service life of the system composed of the control valve, tail nozzle and flash tank.

[0026] The principle of the first vibration isolation and noise reduction component 3 is as follows: When the medium cavitates in the flow channel of the ceramic inner liner tube 2, it generates an instantaneous impact, causing the ceramic component to vibrate. After the vibration is transmitted to the vibration isolation and noise reduction component 3, it is buffered and weakened. By the time it is transmitted to the inner wall of the tube body 1, it has been greatly weakened. At the same time, when cavitation noise is generated and propagates laterally along the tube body 1, the impedance mismatch effect of sound will occur in the system composed of the ceramic inner liner tube 2, the vibration isolation and noise reduction component 3, and the tube body 1, which are made of three different materials. The area where the vibration isolation and noise reduction component 3 is located absorbs the noise, reducing the overall noise level of the tube body 1.

[0027] In the embodiments of this application, reference is made to the appendix. Figure 2 As shown, the vibration isolation and noise reduction assembly 3 includes a first vibration isolation and noise reduction component 301 and a plurality of second vibration isolation and noise reduction components 302. The first vibration isolation and noise reduction component 301 is coaxially sleeved on the outer periphery of the corresponding ceramic inner liner tube 2, meaning that the inner diameter of the first vibration isolation and noise reduction component 301 matches the outer diameter of the ceramic inner liner tube 2. The plurality of second vibration isolation and noise reduction components 302 are respectively sleeved on the outer periphery and inner wall of the first vibration isolation and noise reduction component 301, and the second vibration isolation and noise reduction components 302 are glued to the first vibration isolation and noise reduction component 301. For example, the second vibration isolation and noise reduction component 302 is a hollow cylindrical structure. There are three components. The first second vibration isolation and noise reduction component 302 is fixedly wrapped around the inner wall of the first vibration isolation and noise reduction component 301, and its height is less than that of the first vibration isolation and noise reduction component 301. The second and third second vibration isolation and noise reduction components 302 are respectively fixedly wrapped around the first vibration isolation and noise reduction component 301 near the upper and lower ends. This structural arrangement of the second vibration isolation and noise reduction component 302 can satisfy that the entire pipe body composed of the pipe body 1, the ceramic inner liner pipe 2 and the first vibration isolation and noise reduction component 301 has sufficient sound absorption area to absorb high-frequency aerodynamic noise, and can also satisfy that the vibration isolation and noise reduction component 3 has sufficient rigidity.

[0028] Specifically, the first vibration isolation and noise reduction component 301 is made of non-metallic materials and has viscoelastic characteristics at high temperatures. The damping generated by elasticity and viscosity can buffer the pulsating pressure from the internal flow channel of the ceramic inner liner tube 2, that is, effectively isolate vibration. For example, the first vibration isolation and noise reduction component 301 can be rubber, engineering plastics, etc.

[0029] The first vibration isolation and noise reduction component 301 has a first splicing block 3011 integrally formed at its upper end, the length of which is less than the length of the first vibration isolation and noise reduction component 301. A second splicing block 3012, adapted to the first splicing block 3011, is integrally formed at its lower end. The cooperation of the first splicing block 3011 and the second splicing block 3012 ensures that the ends of two adjacent ceramic inner liner tubes 2 do not directly contact each other; instead, they contact each other through the first splicing block 3011 and the second splicing block 3012. This prevents the two ceramic inner liner tubes 2 from rubbing against each other and being damaged during vertical vibration, thus achieving the buffering and vibration isolation function of the ends of the two ceramic inner liner tubes 2. Furthermore, the thickness of the first splicing block 3011 and the second splicing block 3012 after splicing is equal to the thickness of the first vibration isolation and noise reduction component 301.

[0030] Two ceramic inner tubes 2, each fitted with a vibration isolation and noise reduction component 3, are arranged vertically. They are connected by a first splicing block 3011 and a second splicing block 3012. This ensures that the two ceramic inner tubes 2 fitted with the vibration isolation and noise reduction component 3 can mutually limit and position each other after being strung onto the hoisting rod, ensuring stability and accuracy during hoisting. If the first splicing block 3011 and the second splicing block 3012 are not connected, the ceramic inner tubes 2 fitted with the vibration isolation and noise reduction component 3 will shift radially during hoisting and installation. This shift will cause the two ceramic inner tubes 2 fitted with the vibration isolation and noise reduction component 3 to jam or even scratch the installation device during hoisting and installation. Therefore, to avoid this situation, the ends of the first vibration isolation and noise reduction component 301 on two adjacent ceramic inner tubes 2 are spliced ​​together to achieve positioning and limiting.

[0031] The material of the second vibration isolation and noise reduction component 302 can be a soft, high-temperature resistant packing material, specifically woven flexible graphite. When the medium bubbles inside the ceramic inner liner tube 2 burst and flow at high speed, the flow noise from the bursting bubbles has high-frequency characteristics. After penetrating the ceramic inner liner tube 2, it will be absorbed by the second vibration isolation and noise reduction component 302. The noise generated by the high-speed flowing medium gradually flows out of the pipe section from top to bottom, and has the characteristic of transitioning from mid-frequency to low-frequency.

[0032] When installing the second vibration isolation and noise reduction component 302, it is necessary to cut the second vibration isolation and noise reduction component 302. Specifically, the cutting method is to make a cut at a 45° angle with its central axis.

[0033] Considering that the flash tank 6 vibrates after the medium impacts the inner wall and bottom of the flash tank 6, and the vibration of the flash tank 6 causes the tube body 1 to vibrate under forced vibration, in order to avoid the impact of this vibration, a second vibration isolation and noise reduction component is installed on the tube body 1 to increase the stiffness design of the tube body 1, so that its first natural frequency is 2-5 times greater than the excitation force frequency of the tank body, effectively avoiding resonance between the tube body 1 and the flash tank 6.

[0034] In the embodiments of this application, reference is made to the appendix. Figures 3-4 As shown, the second vibration isolation and noise reduction component includes a protective cap 101 and multiple stiffeners 102; the protective cap 101 is set at the discharge end of the tube body 1 and is used to limit the ceramic inner liner tube; the multiple stiffeners 102 are arranged around the outer periphery of the tube body 1 and their ends are connected to the lower end of the protective cap 101, and are used to cooperate with the protective cap 101 to prevent the tube body 1 from resonating with the flash tank 6.

[0035] Specifically, the protective cap 101 is welded to the discharge end of the tube body 1, which can limit the ceramic inner liner tube 2 in contact with it and prevent the ceramic inner liner tube 2 from sliding out of the tube body 1 under the action of gravity. For example, there are four stiffening plates 102, which can be increased to six as needed. They are welded around the outer periphery of the tube body 1 and the ends are welded to the lower end of the protective cap 101. The stiffening plates 102 and the protective cap 101 work together to increase the rigidity of the tube body 1, so that the first natural frequency of the tube body 1 is greater than 2-5 times the excitation frequency of the flash tank 6, effectively preventing resonance between the tube body 1 and the flash tank 6.

[0036] The process of using a vibration-damping and noise-reducing nozzle with a control valve in this embodiment is as follows: The vibration-damping and noise-reducing nozzle is installed inside the flash tank 6, and a control valve 7 is installed on the inlet. The medium enters the control valve 7 and flows into the nozzle. After cavitation in the flow channel of the ceramic liner tube 2, a momentary impact is generated, causing the ceramic parts to vibrate. The vibration is buffered and weakened after being transmitted to the vibration-damping and noise-reducing component 3. By the time it reaches the inner wall of the tube body 1, it has been greatly weakened. At the same time, when cavitation noise is generated and propagates laterally along the tube body 1, an impedance mismatch effect occurs among the three different materials: the ceramic liner tube 2, the vibration-damping and noise-reducing component 3, and the tube body 1. The area where the vibration-damping and noise-reducing component 3 is located absorbs the noise, reducing the overall noise level of the tube body 1.

[0037] At the same time, when the medium impacts the inner wall and bottom of the flash tank 6, the tube body 1 will not resonate because the second vibration isolation and noise reduction component increases the stiffness of the tube body 1.

[0038] Example 2: This embodiment provides a tail spray device, including a flash tank 6, a tank cover 8, a control valve 7, and a vibration-damping and noise-reducing tail spray pipe of Embodiment 1. The tank cover 8 is installed over the feed inlet of the flash tank 6. The pipe body 1 of the vibration-damping and noise-reducing tail spray pipe is detachably installed on the tank cover 8 by bolts. The control valve 7 is connected to the upper end of the pipe body 1 by studs and is located outside the flash tank 6. The vibration-damping and noise-reducing tail spray pipe is located inside the flash tank 6.

[0039] Meanwhile, this application also provides a method for installing a tail spray device, wherein the installation method uses an installation fixture to install the vibration isolation and noise reduction tail spray pipe of Embodiment 1 onto the flash tank 6.

[0040] For details, please refer to the appendix. Figures 5-8 As shown, the installation fixture includes a straightening frame 4 and a hoisting device 5. The straightening frame 4 is fixed to the ground by anchor bolts and is concentrically arranged with the pipe body 1. The height of the straightening frame 4 is higher than the height of the pipe body 1. The hoisting device 5 is used in conjunction with the straightening frame 4 to assemble and install the tail nozzle.

[0041] For details, please refer to the appendix. Figures 5-6 As shown, the straightening frame 4 includes a frame body 401 and multiple straightening sleeves 402, which are made of Q235 pipe, plate and 45 steel welded together. The frame body 401 is fixed to the ground by anchor bolts and is composed of four inclined columns; for example, there are three straightening sleeves 402, which are adapted to the outer diameter and shape of the pipe body 1, and can be increased to two or four as needed. The straightening sleeves 402 are fixed in the frame body 401 by stiffening plates and are used to limit the position of the pipe body 1 and the ceramic liner pipe 2.

[0042] When in use, first fix the pipe body 1 in the preset position, then hoist the straightening frame 4 from the top of the pipe body 1, put it on the outer circumference of the pipe body 1, and make the straightening sleeve 402 concentric with the pipe body 1.

[0043] For details, please refer to the appendix. Figure 7 As shown, the lifting device 5 includes a lifting ring 501, a load-bearing rod 502, and a load-bearing block 503. The lifting ring 501 is a lifting ring screw. The upper end of the load-bearing rod 502 is connected to the lifting ring 501 by a thread. The rod body is matched with multiple ceramic inner lining tubes 2, that is, multiple ceramic inner lining tubes 2 can be stacked on the load-bearing rod 502 along the length direction of the load-bearing rod 502. The load-bearing block 503 is detachably connected to the lower end of the load-bearing rod 502 by multiple screws and matches the ceramic inner lining tube 2 located at the discharge end of the tube body 1. That is, the outer diameter of the load-bearing block 503 is smaller than the inner diameter of the lower end of the ceramic inner lining tube 2 that it contacts. In this way, the load-bearing block 503 can enter the lower end of the ceramic inner lining tube 2 and connect with the load-bearing rod 502.

[0044] In use, the load-bearing block 503 is detachably installed at the lower end of the load-bearing rod 502, the lifting ring 501 is detachably installed at the upper end of the load-bearing rod 502, multiple ceramic inner lining tubes 2 are stacked on the outer periphery of the load-bearing rod 502, and then the load-bearing rod 502 is hoisted into the pipe body 1 by hoisting equipment, and the tail nozzle is installed, and finally installed in the flash tank 6.

[0045] In this embodiment of the application, a specific method for assembling and installing the vibration isolation and noise reduction tailpipe of Embodiment 1 using this installation fixture is also provided. The method includes the following steps: S1. Connect the tube body 1 to the tank cover 8 of the flash tank 6, and install the frame 401; Specifically, the feed end of the tube body 1 is fixedly connected to the inside of the tank cover 8 of the flash tank 6 by a screw, and the frame 401 is sleeved on the outer periphery of the tube body 1 and is concentrically set with the tube body 1.

[0046] S2. Assemble the ceramic inner liner pipe 2 and the vibration isolation and noise reduction component 3 using the hoisting device 5, and hoist them to the pipe body 1 to form the tail nozzle; Specifically, the process of assembling the tail nozzle is as follows: S201. Position the end of the load-bearing rod 502 corresponding to the feed inlet of the pipe body 1 downwards, and install a lifting ring 501 on the upper end of the load-bearing rod 502; S202. Connect multiple ceramic inner liner tubes 2 and corresponding vibration isolation and noise reduction components 3 to obtain multiple ceramic vibration isolation sleeve components; S203. Multiple ceramic vibration isolation sleeve assemblies are sequentially sleeved and passed through the outer periphery of the load-bearing rod 502 from the lower end of the load-bearing rod 502; S204. Install a load-bearing block 503 at the lower end of the load-bearing rod 502. At this time, due to the limiting position of the load-bearing block 503, the ceramic vibration isolation sleeve assembly will not detach from the load-bearing rod 502. Figure 8 As shown; S3. Remove the installation fixtures and flip the lid 8 of the flash tank 6 from step S2, then install it on the flash tank 6, as shown. Figure 1 As shown.

[0047] Specifically, the uprighting frame 4 and the hoisting device 5 are removed, and the protective cap 101 and the stiffening plate 102 are installed on the pipe body 1. The tank cover 8 of the flash tank 6 is flipped over and installed on the flash tank 6 to complete the installation of the tail nozzle.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A vibration-damping and noise-reducing tailpipe for a control valve, comprising a pipe body (1) and a plurality of ceramic inner liner pipes (2) coaxially sleeved within the pipe body (1), characterized in that, Also includes: Multiple first vibration isolation and noise reduction components (3) are located between the pipe body (1) and the ceramic inner liner pipe (2) and are coaxially sleeved on the outer periphery of the corresponding ceramic inner liner pipe (2) for vibration isolation and noise reduction of the pipe body (1); The second vibration isolation and noise reduction component is sleeved on the outer periphery of the tube body (1) to prevent resonance between the tube body (1) and the flash tank (6).

2. The vibration isolation and noise reduction tailpipe of the control valve according to claim 1, characterized in that, The first vibration isolation and noise reduction component (3) includes: The first vibration isolation and noise reduction component (301) is coaxially sleeved on the outer periphery of the corresponding ceramic inner liner tube (2); Multiple second vibration isolation and noise reduction components (302) are respectively fitted on the outer periphery and inner wall of the first vibration isolation and noise reduction component (301).

3. The vibration isolation and noise reduction tailpipe of the control valve according to claim 2, characterized in that, The first vibration isolation and noise reduction component (301) is made of rubber or engineering plastic, and the second vibration isolation and noise reduction component (302) is made of soft, high-temperature resistant packing material.

4. The vibration isolation and noise reduction tailpipe of the control valve according to claim 1, characterized in that, The second vibration isolation and noise reduction component includes: A protective cap (101) is installed at the discharge end of the tube body (1) to limit the ceramic inner lining tube (2); Multiple stiffeners (102) are arranged around the outer periphery of the tube body (1) and their ends are connected to the lower end of the protective cap (101) to cooperate with the protective cap (101) to prevent the tube body (1) from resonating with the flash tank (6).

5. A tail spray device, characterized in that, The device includes a flash tank (6), a tank cover (8), a control valve (7), and a vibration-damping and noise-reducing nozzle as described in any one of claims 1 to 4. The tank cover (8) is located at the inlet of the flash tank (6), the pipe body (1) of the vibration-damping and noise-reducing nozzle is located on the tank cover (8), the control valve (7) is connected to the upper end of the pipe body (1) and is located outside the flash tank (6), and the vibration-damping and noise-reducing nozzle is located inside the flash tank (6).

6. A method for installing a tail spray device, wherein the method uses an installation fixture to install the vibration isolation and noise reduction tail spray pipe according to any one of claims 1 to 4 onto the flash tank (6), characterized in that, The installation fixture includes: The straightening frame (4) is fixed on the ground and is set concentrically with the pipe body (1); The hoisting device (5) is used in conjunction with the straightening frame (4) to assemble and install the vibration isolation and noise reduction tail nozzle.

7. The installation method according to claim 6, characterized in that, The straightening frame (4) includes: The frame (401) is connected to the ground; Multiple straightening sleeves (402) are spaced apart from top to bottom inside the frame (401) to limit the position of the pipe body (1) and the ceramic liner pipe (2).

8. The installation method according to claim 7, characterized in that, The hoisting device (5) includes: Ring (501); The upper end of the load-bearing rod (502) is detachably connected to the lifting ring (501), and multiple ceramic inner lining tubes (2) are fitted around the outer periphery of the rod body. The load-bearing block (503) is detachably connected to the lower end of the load-bearing rod (502) and matches the inner diameter of the corresponding ceramic inner liner tube (2).

9. The installation method according to claim 8, characterized in that, The installation method includes: Connect the pipe body (1) to the can lid (8) and install the frame (401). The ceramic inner liner pipe (2) and the vibration isolation and noise reduction component (3) are assembled by the hoisting device (5) and transported to the pipe body (1) to form the tail nozzle; Remove the installation fixtures and install the protective cap (101) and stiffener (102), then install the tank cover (8) on the flash tank (6).

10. The installation method according to claim 9, characterized in that, The process of assembling the tail nozzle includes: The end of the load-bearing rod (502) corresponding to the feed port of the pipe body (1) is facing down, and a lifting ring (501) is installed on the upper end of the load-bearing rod (502). Multiple ceramic inner liner tubes (2) and corresponding vibration isolation and noise reduction components (3) are connected together to obtain multiple ceramic vibration isolation sleeve components; Multiple ceramic vibration isolation sleeve assemblies are sequentially sleeved onto the outer circumference of the load-bearing rod (502) from the lower end of the rod body; Install a load-bearing block (503) at the lower end of the load-bearing rod (502).

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