Pipe heat absorption shock damping vibration elimination device for high pressure steam discharge small hole muffler

Abstract

The present invention relates to a pipeline heat absorption shock damping vibration elimination device for a small-hole silencer for high-pressure steam discharge, comprising: a boiler high-temperature and high-pressure residual steam or gas venting tail pipe outlet pipe, which is welded and fixed to a "silencer" inlet pipe; the "silencer" is installed and fixed to a basic impact response bracket by a screw connection assembly; a gap plug-in facility is provided between the basic impact response bracket and the basic vibration isolation bracket; the basic vibration isolation bracket is welded and fixed to an outdoor steel structure truss of the boiler top; a vibration-isolating rubber pad is used to eliminate vibration between the impact surface of the basic vibration isolation bracket and the basic impact response bracket; a vibration-isolating rubber pad is used to isolate vibration between the anti-frame and the vibration contact surface of the positioning plate; a gap plug-in facility is provided between the basic vibration isolation bracket and the spring-link type damping vibration isolator; the basic impact response bracket and the spring-link type damping vibration isolator are welded and fixed, and the above-set structural form is used to manufacture a complete set of products that constitute an integral whole.

Description

Technical Field

[0001] The present invention relates to a pipeline heat absorption shock damping vibration elimination device for a small hole silencer for high-pressure gas discharge. When the maximum amplitude of the motion displacement of the basic impact response bracket of the "silencer" is known, according to the allowable value of the motion displacement amplitude allowed by the mechanical equipment, a structural form of measures such as vibration isolation, vibration reduction and vibration elimination dynamic parameter design is adopted to manufacture the pipeline heat absorption shock damping vibration elimination device of the "silencer" which is integrated.

[0002] Generally speaking, the flow velocity in the pipe is proportional to the noise level. The higher the flow velocity, the greater the noise. Venting exhaust noise is also called injection noise, which is a prominent source of pollution. For example, boiler exhaust in power plants, blast furnace exhaust in the metallurgical industry, high-speed airflow emissions in the chemical industry and other industrial and mining enterprises are all fluid injection noise. The characteristics of this type of noise source are high sound power, high exhaust pressure and airflow velocity, and general "mufflers" are no longer applicable.

[0003] Installed behind a large high-temperature and high-pressure steam or gas safety valve (or power release valve): Chinese Patent Publication No. CN303635042 S <High-temperature and high-pressure steam / gas discharge composite silencer>; or Chinese Patent Publication No. CN111369961A <High-temperature and high-pressure steam or gas small hole injection throttling and pressure reduction composite discharge silencer> - hereinafter referred to as "silencer", the above-mentioned "silencer" can be installed on the pipeline close to the downstream side of the valve, and adding a "silencer" on the downstream pipeline of the valve can also be used to share part of the pressure drop of the valve, and the multi-level diffusion buffer venting "silencer" itself plays a resistant silencing role, so a three-level small hole injection throttling and pressure reduction is set behind the high-noise valve (i.e. downstream of the valve) to achieve the purpose of reducing the noise of the pipeline system, and the general noise reduction reaches or exceeds 39dB(A).

[0004] The above-mentioned large-scale "muffler" should be designed with drainage and other issues, and the effects of the three-level small hole injection throttling pressure reduction and venting of the "muffler" on the installation base bracket and the heat absorption displacement of the pipeline should also be considered; it is mainly used to reduce the exhaust noise of various parameters of power generation boilers, industrial boilers, superheaters, reheaters, start-up separators and safety valves; or to reduce the emission or venting noise of process gases from pressure tanks, ejectors, chemical reactors and other equipment and containers in industrial sectors such as chemical, metallurgy, and transportation.

[0005] The above-mentioned large-scale "silencer" can be used in conjunction with boiler or pressure vessel safety valves to achieve good noise reduction effects; it can meet the needs of high-pressure and high-temperature parameter boilers or pressure vessel safety valves for exhaust silencing {i.e., it can be used to reduce the exhaust noise of power generation boilers, industrial boilers, superheaters, reheaters, start-up separators and safety valves of various parameters}; it can also be used to reduce the emission or venting noise of process gases from pressure tanks, ejectors, chemical reactors and other equipment and containers in industrial sectors such as chemical, metallurgical, and transportation, with small resistance, and does not affect the displacement and starting and returning conditions of the safety valve; the inlet pipe of this type of "silencer" is connected to the exhaust / gas pipe port of the exhaust / gas device, and the discharged steam / gas is discharged to the atmosphere after noise reduction through the "silencer".

[0006] This type of "silencer" is connected to the exhaust steam / gas pipe outlet as a vertical structure, and the "silencer" is fixed to the steel structure truss outside the furnace top: the pipeline heat absorption shock damping vibration reduction device of the high-pressure steam discharge small hole silencer should consider the impact stress and pipeline heat absorption displacement movement and other issues {for example, when the length of the steam pipe after the safety valve of the boiler or pressure vessel, or the power release valve exceeds 8m, the heat absorption displacement movement during venting should be considered}, and the above "pipeline heat absorption shock damping device of the silencer" is installed. The interface pipe of the "silencer" and the exhaust steam / gas pipe outlet of the boiler or pressure vessel adopt a direct welding structure, and the horizontal and vertical displacement movement of the exhaust steam / gas pipe is not restricted----it can be fixed independently for safety in longitudinal and lateral impact response freedom, can absorb the vertical and horizontal heat absorption displacement of the exhaust steam / gas pipeline, so that the exhaust steam / gas pipeline is not subjected to additional load due to the installation of the "silencer", which can ensure the safety and reliability of the exhaust steam / gas pipeline working in the free state of heat absorption displacement impact response, small size, light weight, simple structure and easy maintenance.

[0007] Secondly, the pressure drop can be properly distributed. When the main regulating valve generates strong noise due to the large pressure drop, the "muffler" adopts a three-level diffusion buffer venting small hole injection throttling pressure reduction to share the pressure drop of the main regulating valve; when a certain opening of the main regulating valve will cause pipeline resonance, several levels of diffusion buffer venting "muffler" can be used on the pipeline on the downstream side of the valve to avoid pipeline resonance; and ensure that this type of "muffler" does not affect the safety valve displacement and the setting of the safety valve opening and closing pressure of the start-up and return seat pressures; after ensuring that the boiler safety valve is set without abnormalities, good tightness, and no air leakage, the hot setting of the safety valve is completed.

[0008] Third, it has good safety. Since this type of large "muffler" and exhaust pipe are directly welded, the reaction forces are balanced when steam / gas is discharged. It will use supports and "muffler" to fix on the steel structure truss outside the furnace top room. Compared with the structure of pipe and "muffler" plug-in connection, it improves safety and reliability. Background Art

[0009] Boilers and pressure vessels are widely used in industry and people's lives. They are indispensable production devices and living equipment for industrial production and people's lives. Boilers or pressure vessels contain flammable, explosive, and toxic media and often work under high pressure and high temperature. Once an accident occurs, it will cause serious personal injury and death and significant property losses.

[0010] Boilers and pressure vessels occupy an important position in the national economy. A boiler is an energy conversion device that converts the chemical energy of the fuel into thermal energy through fuel combustion in the boiler, and then transfers the thermal energy to the working medium - water through heat transfer, turning the water into steam or water at a higher temperature. In short, a boiler is a device that produces steam or heats water. A boiler that produces steam is called a steam boiler. A boiler that heats water to raise its temperature but does not vaporize it is called a hot water boiler. A pressure vessel generally refers to a sealed container that withstands fluid pressure.

[0011] The above-mentioned large-scale "muffler" also belongs to a "pressure vessel that withstands high-pressure fluids". It is used for steam / gas venting and air / air separation units, pressure tanks, ejectors, etc. in the chemical, petroleum, metallurgy, thermal power generation, nuclear power, textile, machinery and other industries (including: boiler superheater exhaust, reheater exhaust, safety valve or power release valve exhaust), etc., as well as a new type of noise reduction device for other gas emissions.

[0012] Importance of boiler or pressure vessel safety. Boilers and pressure vessels have bad working conditions and are prone to accidents. The specific manifestations are: ① Bearing high pressure and temperature - the steam-water system of the boiler is composed of sealed containers and pipes. It bears medium pressure and flame heating during operation. Sometimes the pressure and temperature it bears can reach very high levels; the pressure is easy to bear pressure loads and other loads of different sizes. Some containers are also operated under high temperature or deep cold conditions; the pressure in the boiler and pressure vessel may rise rapidly due to operating errors or abnormal reactions, resulting in overpressure rupture of the pressure-bearing parts; ② Local stress is relatively complex - boilers and pressure vessels usually have open-hole pipes or other discontinuous structures of other shapes. There are higher stresses in these local areas, which will cause the pressure-bearing parts to rupture under unfavorable use environments or load conditions;

[0013] ③ Continuous operation is not easy to inspect - boilers and pressure vessels are mostly steel welded structures, and the welds often contain hidden defects that are missed or allowed by standards. During use, boilers and many pressure vessels must operate continuously, which is inconvenient to stop for inspection, and often cause ruptures due to the expansion of defects.

[0014] ④Contact with corrosive media——……

[0015] Under the combined influence of the above factors, various accidents often occur even for boilers and pressure vessels whose design and manufacturing quality meet the standards, not to mention equipment with design and manufacturing defects; the accident rate of boilers and pressure vessels is usually expressed as the number of accidents occurring per year for 10,000 units of equipment, that is: accidents / (10,000 units·year).

[0016] Accidents with boilers and pressure vessels have serious consequences, and their explosions are catastrophic. The rupture and destruction of the pressure-bearing parts of boilers or pressure vessels has great destructive power, which not only damages the equipment itself, but also damages the surrounding equipment and buildings, and often causes casualties, with extremely serious consequences. The main factors causing injuries are: ① Shock waves destroy equipment, buildings or directly injure people - the medium in boilers and pressure vessels is generally gas, liquefied gas or high-temperature liquid with high pressure. Once the pressure-bearing parts are broken, the medium will be depressurized and expand or instantly gasify (vaporize), instantly releasing a lot of energy; 85% of the energy is used to generate shock waves, which spread rapidly to the surroundings, destroying equipment, buildings and endangering personal safety; if the pressure source pressure reaches 0.1MPa, it can kill people within 1m of the pressure source; ② Fragments injure people or penetrate equipment and buildings - when a boiler or pressure vessel ruptures, some shells may break into fragments and fly out at high speed, penetrating and damaging the equipment or buildings they encounter, and sometimes directly injuring people; ③ The medium in the container overflows, causing poisoning, combustion, secondary explosion, and chain reactions; ...

[0017] In summary, boilers and pressure vessels are widely used, work in harsh conditions, are easily damaged and accidents occur, and the consequences of accidents are serious. Therefore, the safety of boilers and pressure vessels cannot be taken lightly. my country, like other countries in the world, regards boilers and pressure vessels as special equipment, and their safety is inspected and supervised by specialized agencies.

[0018] The ways to avoid boiler and pressure vessel accidents have been proven to be effective over the years. The basic ways to avoid boiler and pressure vessel accidents are: ① Use laws and regulations to guide the design, manufacture, installation, use, inspection, repair, and modification of boilers and pressure vessels; my country has successively formulated or revised safety technical supervision regulations for steam boilers, hot water boilers, pressure vessels, gas cylinders, etc.; the state and relevant departments have promulgated various boiler and pressure vessel design and manufacturing standards; such as GB150 "Pressure Vessel", GB9222 "Strength Calculation of Pressure Components of Water Tube Boilers", GB / T16508 "Strength Calculation of Pressure Components of Shell Boilers", etc.; practice has proved that strictly following relevant laws and regulations and standards for the design, manufacture, installation, use, inspection, repair, and modification of boilers and pressure vessels can effectively avoid boiler and pressure vessel accidents; ② Implement official or third-party supervision.

[0019] Boiler and pressure vessel safety technology is a system safety engineering technology centered on equipment safety; boiler and pressure vessel accidents, especially boiler or pressure vessel explosions, are the result of instantaneous release of energy from the rupture of pressurized energy storage equipment; ensuring that the equipment does not rupture during the pressurized energy storage process fundamentally solves the safety problem of boilers and pressure vessels; boiler and pressure vessel rupture and explosion are nothing more than two reasons: one is that the working conditions seriously deteriorate, far exceeding the design working conditions, such as severe overpressure or overtemperature; the other is that the equipment itself has hidden or generated defects, which makes the equipment unable to withstand the normal design working conditions; accordingly, the countermeasures to avoid rupture and explosion are: first, the selected materials and equipment should meet the requirements of normal working conditions The first is to meet the requirements; the second is to avoid deterioration of working conditions; the third is to prevent and eliminate equipment defects; it is not an easy task to achieve all these points at the same time, which involves not only the safety performance of boilers and pressure vessels themselves, but also related accessories, auxiliary machines, personnel and environment; it is necessary to master the basic structure and working principle of boilers and pressure vessels, and also to understand a series of knowledge to ensure safety, involving mathematics, material mechanics, fluid mechanics, thermodynamics, metallurgy and heat treatment, chemistry, management and other disciplines, with strong comprehensiveness and practicality; as long as we consciously and comprehensively apply the relevant knowledge of various disciplines, proceed step by step, accumulate gradually, and adhere to the combination of theory and practice, it will not be difficult to master the basic boiler and pressure vessel safety technology.

[0020] Safety valve: a safety protection valve to prevent boilers and pressure vessels from overpressure. It automatically opens or closes according to the working pressure of the boilers and pressure vessels. The advantage of the safety valve is that it remains in a closed state when the boilers and pressure vessels are working under normal pressure. When the medium pressure in the container exceeds the specified value, it can automatically open under the push of the medium pressure to release the pressure in the container to prevent the container or pipeline from being damaged due to overpressure. When the medium pressure in the container drops to normal, it can close automatically and stop releasing the pressure, so that the pressure in the container is always maintained within the maximum allowable range, protecting the normal operation of boilers and pressure vessels and preventing accidents. Therefore, safety valves are widely used in various pressure vessels and pressure pipelines. In the above-mentioned safety pressure relief device, the safety valve can automatically close after opening to discharge excessive pressure, and the container and device can continue to be used, etc.

[0021] Just as, a mounted "muffler" is added to the downstream pipeline after the safety valve of the high-pressure main steam system of a large boiler (that is, on the outlet pipeline of the high-temperature and high-pressure residual steam or gas venting tail pipe of the boiler), and fixed on the basic vibration isolation bracket of the "muffler" on the outdoor steel structure truss of the furnace top, the installation of the pipeline heat absorption shock damping vibration elimination device of the high-pressure steam discharge small hole muffler is adopted, the inlet pipe of the "muffler" and the exhaust steam pipe outlet of the boiler pressure vessel adopt a direct welding structure, and the horizontal and vertical heat absorption displacement impact response of the exhaust steam pipe is free and unrestricted - it can be fixed separately in the vertical and horizontal directions, and can absorb and isolate the vertical thermal displacement and horizontal displacement of the exhaust steam pipe, so that the exhaust steam pipe is not subjected to additional load due to the installation of the "muffler", and can ensure the reliable safety of the exhaust steam / gas pipeline working in the heat absorption displacement state; ensure that the safety valve discharge capacity and the setting of the safety valve opening and closing pressure do not affect the start-up and return seat pressure; after ensuring that the boiler safety valve is set without abnormalities, good tightness, and no air leakage, the hot setting of the safety valve is completed.

[0022] The principle of impact vibration absorber / device is to utilize the principle of energy loss after two objects collide with each other, and install one or more free masses that play an impact role on the vibrating body. When the system vibrates, the free mass will repeatedly impact the vibrating body to consume the vibration energy and achieve the purpose of vibration reduction. This is the principle of impact vibration absorber / device; impact vibration absorber (device) has the advantages of simple structure, light weight, small size, and can be used in a larger frequency range.

[0023] Impact isolation: When equipment is subjected to impact excitation caused by collision, forging hammer, shaking, falling, explosion, etc., its force, displacement, velocity and acceleration will change dramatically, which may cause it to fail or even be destroyed. The impact is transmitted to the foundation and may also damage the surrounding equipment and foundation. For this reason, impact isolation is performed.

[0024] Shock isolation principle:

[0025] Shock is a transient excitation that is suddenly added to the system, and its action period is much shorter than the natural period of the system. Shock isolation is to store the energy suddenly input into the system through the deformation of the shock isolator (device) during the release, conversion and transmission of the shock energy, and then release the energy steadily through the free vibration of the system in a time several times longer than the natural period, and also use the damping of the shock isolator (device) to consume part of the energy; so that the sharp shock wave acts on the equipment or foundation in a more moderate form to reduce the harm of the shock;

[0026] Since the shock contains various frequency components, the vibration transmissibility that is useful for simple harmonic vibration cannot be used for isolation calculation; in addition, since the shock excitation is simplified to a rectangular pulse, its self-power spectrum density function is also a transcendental function, and it is difficult to obtain the analytical expression of the difference of the shock response; therefore, the random isolation method cannot be used, and shock isolation calculation is necessary;

[0027] Shock isolation is also divided into active and passive isolation, as well as single-degree-of-freedom and multi-degree-of-freedom isolation; shock excitation functions are generally divided into two categories: step type and pulse type; usually represented by its peak value, duration and waveform; isolation calculations are performed based on the motion law of the isolation system under shock.

[0028] Passive isolation of shock: Passive isolation is used to reduce the impact of foundation movement caused by external shock on machinery and equipment, so as to reduce stress and strain in the equipment; Passive isolation of shock should meet the following requirements, namely:

[0029] (i) The maximum vibration or maximum force transmitted to the protected equipment (or a part of the equipment) through the isolator (device) is less than the allowable value, ensuring the safe operation of the isolated equipment;

[0030] 2. The maximum deformation of the isolator (device) is less than the allowable value, so that the isolator (device) has sufficient space.

[0031] Rubber products:

[0032] ①. Main characteristics: low load-bearing capacity, damping coefficient of 0.15-0.3, large elastic deformation and creep effect; can be made into various shapes, and can freely select the stiffness in three directions;

[0033] ②. Application scope: mostly used for active vibration isolation; when the load is large, it is made into a pressure-bearing type, and when the load is small, it is made into a shear-bearing type; when used in conjunction with metal springs, it has a good effect in isolating high-frequency vibrations;

[0034] ③. Notes: The pressure-bearing type should ensure that the rubber can expand freely in all directions, and the relative deformation should be controlled at 10% to 20%. The cross-section of the shear-bearing type should be designed to be diamond-shaped; the rubber should be protected from sunlight and erosion by oil and water, and should not be subjected to tension.

[0035] Metal spring:

[0036] 1. Main characteristics: high bearing capacity, large elastic deformation, damping coefficient of 0.01; horizontal stiffness is smaller than vertical stiffness, easy to shake;

[0037] (ii)Application scope: used for passive vibration isolation and active vibration isolation of equipment with large excitation force; it is not suitable for vibration isolation of precision equipment due to easy shaking;

[0038] ㈢. Note: When greater damping is required, a damper can be added or used in combination with a material with greater damping (such as rubber).

[0039] After knowing the displacement amplitude of the support movement, the dynamic parameters of the vibration isolation can be designed according to the allowable displacement amplitude of the mechanical equipment. Summary of the invention

[0040] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a pipe heat absorption shock damping vibration elimination device for a small-hole silencer for high-pressure steam discharge. In order to solve the above technical problems, the technical scheme adopted is: a high-temperature and high-pressure residual steam or gas venting tail pipe outlet pipe of a boiler, the high-temperature and high-pressure residual steam or gas venting tail pipe outlet pipe of the boiler and the inlet pipe of the vertically mounted "muffler" are directly welded and fixed; the "muffler" and the foundation impact response bracket are respectively connected and fixed by adopting: hexagonal head screw with hole bolts, nuts, heavy spring washers, square bevel washers for channel steel, and cotter pins; a gap plug-in structure is adopted between the foundation impact response bracket and the foundation vibration isolation bracket; the foundation vibration isolation bracket and the on-site boiler are connected and fixed by adopting: hexagonal head screw with hole bolts, nuts, heavy spring washers, square bevel washers for channel steel, and cotter pins; a gap plug-in structure is adopted between the foundation impact response bracket and the foundation vibration isolation bracket; the foundation vibration isolation bracket and the on-site boiler are connected and fixed by adopting the gap plug-in structure ... The outdoor steel structure truss of the top room is a structure fixed by welding; the impact surface between the foundation vibration isolation bracket and the foundation impact response bracket is treated with vibration-absorbing rubber pads for vibration absorption; the joint surface between the foundation impact response bracket and the protective frame is a structure fixed by welding; the vibration contact surface between the protective frame and the positioning plate is treated with vibration-absorbing rubber pads for vibration absorption; the "muffler" and the positioning plate are fixed by welding; the foundation vibration isolation bracket and the spring-link type damping vibration absorber are a structure with a gap plug-in type; the foundation impact response bracket and the spring-link type damping vibration absorber are fixed by welding; the above-mentioned structural forms are used to manufacture a pipeline heat absorption shock damping vibration absorption device for a high-pressure gas discharge small hole silencer that constitutes an integral whole.

[0041] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a pipeline heat absorption shock damping vibration elimination device for a small-hole silencer for high-pressure gas discharge. In order to solve the above-mentioned technical problems, the technical scheme adopted is: a basic vibration isolation bracket, a gap plug-in structure is adopted between the basic vibration isolation bracket and the basic impact response bracket; a structure in which vibration is eliminated by a vibration-absorbing rubber pad is adopted between the impact surface of the basic vibration isolation bracket and the basic impact response bracket; a welded fixed structure is adopted between the basic impact response bracket and the protective frame; a vibration isolation treatment is adopted by a vibration isolation rubber pad between the protective frame and the vibration contact surface of the positioning plate; a gap plug-in structure is adopted between the basic vibration isolation bracket and the spring-link type damping vibration isolator; a welded fixed structure is adopted between the basic impact response bracket and the spring-link type damping vibration isolator, and the above-mentioned structural forms are used to manufacture a complete set of products that constitute an integral whole.

[0042] Furthermore, the foundation vibration isolation bracket comprises: a through-hole channel steel armor, wherein the through-hole channel steel armor and the channel steel beam, as well as the bracket end plate, are respectively welded and fixed; the bracket end plate and the bracket column are reinforced by welding through rib plates; the through-hole channel steel armor and the four corners of the channel steel beam are respectively reinforced by welding through angle rib plates A; the through-hole channel steel armor has 2×4~d 2 A gap-inserted structure is adopted between the upper and lower through holes and the elastic connecting rod of the spring-link type damping vibration absorber; a complete set of products consisting of an integrated part 2 is manufactured using the above-mentioned structural form.

[0043] Furthermore, the basic impact response bracket is characterized by comprising: a through-hole channel steel B, wherein the through-hole channel steel B and the through-hole channel steel C are welded and fixed; a structure in which the four corners of the through-hole channel steel B and the through-hole channel steel C components are reinforced by welding through a reinforcing web; the 2×4~d 1 The upper and lower through holes and the elastomer connecting rod of the spring-link type damping vibration absorber are fixed by welding; the four upper through holes on the through-hole channel steel B and the through-hole channel steel C are a structural form compatible with the basic bolts for installing the vertically mounted "muffler"; however, the through-hole channel steel B and the through-hole channel steel C are respectively fixed by welding with the angle steel columns of the protective frame, and the above-mentioned structural form is used to manufacture a complete set of products consisting of an integrated part 8.

[0044] Furthermore, the spring-link damping vibration absorber is characterized by comprising: an elastic connecting rod, wherein the elastic connecting rod and the connecting rod end plate are welded and fixed; the elastic connecting rod is connected to the through-hole channel steel armor of the basic vibration isolation bracket and the 2×4~d 2 A gap-insertion structure is adopted between the upper and lower through holes; the elastic connecting rod is connected to the 2×4~d 1The structure is fixed by welding between the upper and lower through holes; the purpose of the structure of the elastic body connecting rod and the connecting rod end plate being fixed by welding is to use: a damping rubber pad isolating high-frequency vibration and n disc springs with supporting surfaces are connected in series and combined to fix the structure, and at the same time to solve the vibration displacement slender elastic body: n disc springs with supporting surfaces are combined in series and shake along the longitudinal axis direction of the elastic body, and can be used for passive vibration isolation and active vibration isolation of large excitation force body-basic impact response bracket, so that the spring-link damping vibration absorber forms a reciprocating motion of its elastic body connecting rod and transmits it to the vibrating body through the connecting rod spring, that is, the basic impact response bracket, absorbing heat and displacing upward or The maximum amplitude of axial displacement movement is U less than the allowable value, and the margin of sufficient space is h=2(U+n·f), which ensures the safe operation of the isolated equipment - the vertical "muffler". The above-mentioned structural form is used to manufacture a complete set of products consisting of 9 parts {n - the effective number of turns of the disc spring series combination; f - the deformation of the disc spring with a support surface [mm]; Ho - the free height of the disc spring [mm]; U - the maximum amplitude of the longitudinal movement of the heat absorption displacement of the boiler high-temperature and high-pressure residual steam or gas venting tail pipe outlet pipe [mm], or the maximum amplitude of the simple harmonic response axial displacement of the basic impact response bracket [mm]}. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0046] Figure 1 It is a schematic cross-sectional view of a pipe in a static state of a "muffler" according to an embodiment of the present invention.

[0047] Figure 2 It is a schematic cross-sectional view of the heat absorption movement displacement state of the pipe of the "muffler" according to an embodiment of the present invention.

[0048] Figure 3 Embodiment of the present invention Figure 1 Ⅰ-Ⅰ cross-sectional view.

[0049] Figure 4 Embodiment of the present invention Figure 1 Ⅱ-Ⅱ cross-sectional view.

[0050] Figure 5 It is the front view of the complete set product of the embodiment of the present invention (the rear view is the same as the front view and is omitted).

[0051] Figure 6 It is a left view of the kit product of an embodiment of the present invention (the right view is the same as the left view and is omitted).

[0052] Figure 7 4 is a top view of a kit product according to an embodiment of the present invention.

[0053] Figure 8 It is a bottom view of the kit product according to an embodiment of the present invention.

[0054] Fig. 9 It is a complete set product of the embodiment of the present invention Figure 5 BB cross-sectional view.

[0055] Fig.10 It is a complete set product of the embodiment of the present invention Figure 5 AA section view.

[0056] Fig.11 It is a complete set product of the embodiment of the present invention Fig. 9 Magnified cross-sectional view of CC.

[0057] Fig.12 It is a front view of the kit product 2 of the embodiment of the present invention (the rear view is the same as the front view and is omitted).

[0058] Fig.13 It is a left view of the kit product 2 of the embodiment of the present invention (the right view is the same as the left view and is omitted).

[0059] Fig.14 4 is a bottom view of the kit product 2 according to the embodiment of the present invention.

[0060] Fig.15 4 is a top view of a kit product 2 according to an embodiment of the present invention.

[0061] Fig.16 It is a kit product 2 of the embodiment of the present invention. Fig.15 Enlarged view of the mm section.

[0062] Fig.17 It is a kit product 2 of the embodiment of the present invention. Fig.15 nn cross-sectional enlarged view.

[0063] Fig.18 It is an enlarged front view of the kit product part 5 of the embodiment of the present invention (the rear view is the same as the front view and is omitted).

[0064] Fig.19 It is an enlarged top view of the kit product 5 according to the embodiment of the present invention.

[0065] Fig. 20 It is an enlarged left view of the kit product part 5 of the embodiment of the present invention (the right view is the same as the left view and is omitted).

[0066] Fig.21 It is an enlarged bottom view of the kit product part 5 according to the embodiment of the present invention.

[0067] Fig. 22 It is a front view of the kit product 7 according to the embodiment of the present invention.

[0068] Fig.23 4 is a top view of a kit product 7 according to an embodiment of the present invention.

[0069] Fig.24 It is a left view of the kit product 7 of the embodiment of the present invention (the right view is the same as the left view and is omitted).

[0070] Fig.25 The kit product 7 of the embodiment of the present invention Fig. 22 EE cross-sectional view.

[0071] Fig.26 The kit product 7 of the embodiment of the present invention Fig. 22 FF cross-sectional view.

[0072] Fig. 27 It is a left view of the kit product 8 of the embodiment of the present invention (the right view is the same as the left view and is omitted).

[0073] Fig.28 It is a front view of a kit product 8 according to an embodiment of the present invention (the rear view is the same as the front view and is omitted).

[0074] Fig.29 1 is a top view of a kit product 8 according to an embodiment of the present invention.

[0075] Fig.30 1 is a bottom view of a kit product 8 according to an embodiment of the present invention.

[0076] Fig.31 The kit product 8 of the embodiment of the present invention Fig.29 Enlarged cross-sectional view of KK.

[0077] Fig.32 The kit product 8 of the embodiment of the present invention Fig.29 yy cross-sectional enlarged view.

[0078] Fig.33 It is an enlarged front view of the kit product part 9 of the embodiment of the present invention (the rear view is the same as the front view and is omitted).

[0079] Fig.34 It is an enlarged left view of the kit product part 9 of the embodiment of the present invention (the right view is the same as the left view and is omitted).

[0080] Fig.35 It is an enlarged top view of the kit product part 9 according to the embodiment of the present invention.

[0081] Figure 1In: 1. Boiler high-temperature and high-pressure residual steam or gas vent tail pipe outlet pipe; 2. Foundation vibration isolation bracket; 3. "Muffler"; 4. Vibration isolation rubber pad; 5. Positioning plate; 6. Vibration isolation rubber pad; 7. Protective frame; 8. Foundation impact response bracket; 9. Spring-link type damping vibration absorber; 10. Hexagonal head screw with hole bolt; 11. Nut; 12. Heavy spring washer; 13. Square bevel washer for channel steel; 14. Split pin.

[0082] Figure 2 In: 3. "Muffler"; 7. Protective frame; 9. Spring-link type damping vibration absorber; 901. Elastomer connecting rod; 902. Connecting rod end plate; 903. Damping rubber pad; 904. Disc spring with bearing surface.

[0083] Figure 3 Middle: 2. Foundation vibration isolation bracket; 3. "Muffler"; 4. Vibration-absorbing rubber pad; 8. Foundation impact response bracket; 9. Spring-link type damping vibration absorber; 10. Hexagonal head screw with hole bolt; 11. Nut; 12. Heavy spring washer; 13. Square bevel washer for channel steel; 14. Split pin.

[0084] Figure 4 Middle: 3. "Muffler"; 6. Vibration isolation rubber pad; 7. Protective frame.

[0085] Figure 5 Middle: 2. Foundation vibration isolation bracket; 4. Vibration-absorbing rubber pad; 5. Positioning plate; 6. Vibration isolation rubber pad; 7. Protective frame; 8. Foundation impact response bracket; 9. Spring-link type damping vibration absorber.

[0086] Figure 6 Middle: 901. Elastomeric connecting rod; 902. Connecting rod end plate; 903. Damping rubber pad; 904. Disc spring with bearing surface.

[0087] Figure 7 Middle: 2. Basic vibration isolation bracket; 4. Vibration-absorbing rubber pad; 5. Positioning plate; 6. Vibration isolation rubber pad; 7. Protective frame.

[0088] Fig.10 Middle: 6. Vibration isolation rubber pad; 7. Protective frame.

[0089] Fig.11 Middle: 2. Foundation vibration isolation bracket; 4. Vibration absorbing rubber pad; 8. Foundation impact response bracket; 901. Elastomer connecting rod; 902. Connecting rod end plate; 903. Damping rubber pad; 904. Disc spring with bearing surface.

[0090] Fig.12 Middle: 201. Channel steel A with through holes; 202. Bracket end plate; 203. Bracket column; 204. Rib plate; 205. Channel steel beam.

[0091] Fig.15 Middle: 201. Channel steel A with through holes; 202. Bracket end plate; 205. Channel steel beam; 206. Angle rib plate A.

[0092] Fig.16 Middle: 202. Bracket end plate; 205. Channel steel beam.

[0093] Fig.17 Middle: 202. bracket end plate; 203. bracket column; 204. rib plate; 205. channel steel beam; 206. angle rib plate A.

[0094] Fig.18 Middle: 501. Disc reinforcement plate; 502. Disc end plate.

[0095] Fig.19 Middle: 501. Disc reinforcement plate; 502. Disc end plate.

[0096] Fig. 22 Middle: 701. Angle steel longitudinal beam; 702. Angle steel horizontal beam; 703. Angle steel column.

[0097] Fig.25 Middle: 704. Angle rib plate B; 705. Positioning channel steel.

[0098] Fig.26 Middle: 703. Angle steel column.

[0099] Fig.28 Chinese: 801. Channel steel with through holes B; 802. Channel steel with through holes C.

[0100] Fig.30 Middle: 801. Channel steel with through holes B; 802. Channel steel with through holes C; 803. Strengthened web.

[0101] Fig.31 Middle: 803. Strengthen the web.

[0102] Fig.33 Middle: 901. Elastomeric connecting rod; 902. Connecting rod end plate; 903. Damping rubber pad; 904. Disc spring with bearing surface. DETAILED DESCRIPTION

[0103] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 7 , Fig.10 , Fig.11As shown, the pipe heat absorption shock damping vibration elimination device of the high-pressure steam discharge small hole silencer of this embodiment includes: a boiler high-temperature and high-pressure residual steam or gas venting tail pipe outlet pipe 1, the boiler high-temperature and high-pressure residual steam or gas venting tail pipe outlet pipe 1 and the vertical "muffler" 3 inlet pipe adopt a structure of direct welding and fixing; the "muffler 3" and the basic impact response bracket 8 are respectively connected and fixed by adopting: GB / T31.1 hexagonal head screw with hole bolt 10, GB / T3632 nut 11, GB / T7244 heavy spring washer 12, GB / T853 channel steel square bevel washer 13, GB / T91 cotter pin 14 assembly connection; the basic impact response bracket 8 and the basic vibration isolation bracket 2 adopt a gap plug-in structure; the basic vibration isolation bracket 2 and the existing The outdoor steel structure truss of the boiler top of the field adopts a welded fixed structure; the collision surface between the foundation vibration isolation bracket 2 and the foundation impact response bracket 8 is treated with a vibration-absorbing rubber pad 4; the joint surface between the foundation impact response bracket 8 and the protective frame 7 is welded and fixed; the vibration contact surface between the protective frame 7 and the positioning plate 5 is treated with a vibration-absorbing rubber pad 6; the "muffler" 3 and the positioning plate 5 are welded and fixed; the foundation vibration isolation bracket 2 and the spring-link type damping vibration absorber 9 are of a gap plug-in structure; the foundation impact response bracket 8 and the spring-link type damping vibration absorber 9 are of a welded and fixed structure; the above-mentioned structural form is used to manufacture a pipeline heat absorption shock damping vibration-absorbing device that constitutes an integral high-pressure steam discharge small hole silencer.

[0104] like Figure 5 , Figure 7 , Fig.10 , Fig.11 As shown, the pipe heat absorption shock damping vibration elimination device of the high-pressure gas discharge small hole silencer of this embodiment comprises: a basic vibration isolation bracket 2, a gap plug-in structure is adopted between the basic vibration isolation bracket 2 and the basic impact response bracket 8; a structure in which vibration elimination treatment is performed by a vibration elimination rubber pad 4 is adopted between the impact surface of the basic vibration isolation bracket 2 and the basic impact response bracket 8; a welded fixed structure is adopted between the basic impact response bracket 8 and the protective frame 7; a vibration isolation treatment is performed by a vibration isolation rubber pad 6 between the protective frame 7 and the vibration contact surface of the positioning plate 5; a gap plug-in structure is adopted between the basic vibration isolation bracket 2 and the spring-link type damping vibration isolator 9; a welded fixed structure is adopted between the basic impact response bracket 8 and the spring-link type damping vibration isolator 9, and the above-mentioned structural forms are used to manufacture a complete set of products that constitute an integral whole.

[0105] like Figure 1 , Figure 5 and Fig.11 and Fig.12 , Fig.14 , Fig.15 , Fig.16 , Fig.17 As shown, the foundation vibration isolation bracket 2 of this embodiment is provided, and the foundation vibration isolation bracket 2 has: a through-hole channel steel armor 201, the through-hole channel steel armor 201 and the channel steel cross beam 205, as well as the bracket end plate 202, are respectively welded and fixed; the bracket end plate 202 and the bracket column 203 are respectively welded and reinforced by rib plates 204; the through-hole channel steel armor 201 and the four corners of the channel steel cross beam 205 are respectively welded and reinforced by angle rib plates A 206; the through-hole channel steel armor 201 has 2×4~d 2 A gap-inserted structure is adopted between the upper and lower through holes and the elastic connecting rod 901 of the spring-connecting-rod damping vibration absorber 9; the above-mentioned structural form constitutes an integrated component 2 complete set product.

[0106] like Fig.18 , Fig.19 As shown, it is the positioning plate 5 of this embodiment, the positioning plate 5 has: a plate end plate 502, the plate end plate 502 and the plate rib plate 501 are welded and fixed, and the above structure is used to manufacture a complete set of products of the integrated part 5.

[0107] like Figure 1 , Figure 5 and Fig. 22 , Fig.25 , Fig.26 , Fig.28 As shown, the protective frame 7 of this embodiment, the protective frame 7 has: an angle steel longitudinal beam 701, the angle steel longitudinal beam 701 and the angle steel cross beam 702 are respectively welded and fixed to the angle steel column 703, the angle steel longitudinal beam 701 and the angle steel cross beam 702 are welded and fixed to the angle rib plate B 704 at the four corners, the angle steel longitudinal beam 701 and the angle steel cross beam 702 are welded and fixed to the holed positioning channel steel 705 in the middle, the lower end of the angle steel column 703 is welded and fixed to the upper end faces of the four corners of the foundation impact response bracket 8, the channel steel B 801 with through holes and the channel steel C 802 with through holes; the above-set structural form is used to manufacture a complete set of products of the integrated component 7.

[0108] like Figure 1 , Figure 2 , Figure 5 and Fig.11 , Fig. 22 and Fig.28 , Fig.29 , Fig.30 , Fig.31As shown, the basic impact response bracket 8 of this embodiment is provided, and the basic impact response bracket 8 has a through-hole channel steel B 801, including: the through-hole channel steel B 801 and the through-hole channel steel C 802 are welded and fixed; the four corners of the through-hole channel steel B 801 and the through-hole channel steel C 802 are welded and reinforced by a reinforcing web 803; the through-hole channel steel B 801 has a 2×4~d 1 The upper and lower through holes and the elastomeric connecting rod 901 of the spring-link type damping vibration absorber 9 are fixed by welding; the four upper through holes on the through-hole channel steel B 801 and the through-hole channel steel C 802 are a structural form compatible with the basic bolts for installing the vertically mounted "muffler" 3; however, the four corner upper end surfaces of the through-hole channel steel B 801 and the through-hole channel steel C 802 and the angle steel column 703 of the protective frame 7 are respectively fixed by welding, and the above-mentioned structural form is used to manufacture a complete set of products of the integrated component 8.

[0109] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Fig.11 , Fig.12 , Fig.14 , Fig.28 , Fig.29 and Fig.33 As shown, the spring-link type damping vibration absorber 9 of this embodiment has an elastic connecting rod 901, including: the elastic connecting rod 901 and the connecting rod end plate 902 are welded and fixed; the elastic connecting rod 901 and: the 2×4~d 2 The upper and lower through holes adopt a gap-type plug-in structure; the elastic connecting rod 901 and: the 2×4~d with the through-hole channel steel B 801 of the basic impact response bracket 8 1The structure is fixed by welding between the upper and lower through holes; the purpose of the structure of the elastic body connecting rod 901 and the connecting rod end plate 902 being fixed by welding is to use: a damping rubber pad 903 isolating high-frequency vibration and n GB / T1972 disc springs 904 with supporting surfaces are connected in series and combined and fixed in a structural form, and at the same time to solve the vibration displacement slender elastic body: n disc springs 904 with supporting surfaces are combined in series and shake along the longitudinal axis direction of the n disc springs 904 with supporting surfaces, and can be used for passive vibration isolation and active vibration isolation of large excitation force body-basic impact response bracket 8, so that the spring-link type damping vibration absorber 9 forms a reciprocating motion of its elastic body connecting rod 901 and transmits it to the vibrating body through the connecting rod spring, that is: the basic impact response bracket 8, absorbs The maximum amplitude of thermal upward displacement or axial displacement is U less than the allowable value, and the margin of sufficient space is h=2(U+n·f), which ensures the safe operation of the isolated equipment - the vertical "muffler" 3. The above-mentioned structural form constitutes a complete set of products of parts 9 {in the above formula: n is the effective number of turns of the disc spring 904 in series; f is the deformation of the disc spring 904 with a support surface [mm]; Ho is the free height of the disc spring 904 [mm]; U is the maximum amplitude of the longitudinal movement of the heat absorption displacement of the boiler high-temperature and high-pressure residual steam or gas venting tail pipe outlet pipe 1 [mm], or the maximum amplitude of the simple harmonic response axial displacement of the basic impact response bracket 8 [mm]}.

[0110] like Figure 1 , Figure 2 and Figure 5 Figure 6 and Fig.11 As shown, the pipe heat absorption shock damping vibration elimination device of the high-pressure steam discharge small hole muffler of this embodiment includes: the outlet of the high-temperature and high-pressure residual steam or gas discharge tail pipe outlet pipe 1 of the boiler, that is, the pipe inlet entering the vertical "muffler" 3: when the exhaust steam or gas pressure is ≤9.81MPa and the temperature is ≤540℃, that is:

[0111] The maximum longitudinal movement amplitude of the heat absorption displacement of the high-temperature and high-pressure residual steam or gas venting tail pipe outlet pipe 1 of the boiler in this embodiment is the basic impact response bracket 8 of the "muffler", the maximum axial displacement amplitude U≈80mm, and the maximum radial displacement amplitude e≈8mm;

[0112] The deformation of a single disc spring 904 with a bearing surface in this embodiment is known to be f=0.75 mm, and the effective number of coils of the disc springs 904 in series is n=19, that is, h=2((U+n·f))=2(80+19×0.75)=188.5 mm;

[0113] The load of the disc spring 904 with a supporting surface of the spring-link type damping absorber 9 of this embodiment is known to be 7720N, the diameter of the elastomeric connecting rod 901 is d=20mm, and the inner diameter of the disc spring 904 matched with the elastomeric connecting rod 901 is known to be φ22.4mm.

[0114] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Fig.11 and Fig.14 , Fig.15 , Fig.16 , Fig.33 As shown in the figure, the pipe heat absorption shock damping vibration reduction device of the high-pressure steam discharge small hole muffler of this embodiment comprises: the diameter of the elastic connecting rod 901 of the spring connecting rod type damping vibration reduction device 9 is d=20mm, and the 2×4~d 2 Between the upper and lower through holes, a gap-type plug-in structure is adopted, that is, the diameter of the elastic connecting rod 901 in this embodiment is d=20mm, and the corresponding 2×4~d 2 The slotted type is 2×4~φ36mm.

[0115] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Fig.11 and Fig.29 , Fig.30 , Fig.33 As shown in the figure, the pipe heat absorption shock damping vibration reduction device of the high-pressure steam discharge small hole muffler of this embodiment comprises: the elastic connecting rod 901 of the spring connecting rod type damping vibration reduction device 9 has a diameter of d=20mm, and the 2×4~d 1 The upper and lower through holes are fixed by welding, that is, the 2×4-d200 diameter of the elastic connecting rod 901 in this embodiment is adapted to the elastic connecting rod 901. 1 The setting is: 2×4~φ22mm.

Claims

1. A pipeline heat absorption shock damping vibration elimination device for a small hole muffler for high pressure gas discharge, characterized in that: include: A boiler high-temperature and high-pressure residual steam or gas venting tail pipe outlet pipe (1), wherein the boiler high-temperature and high-pressure residual steam or gas venting tail pipe outlet pipe (1) and the inlet pipe of the vertically mounted muffler (3) are directly welded and fixed; the muffler (3) and the foundation impact response bracket (8) are respectively assembled, connected and fixed by adopting: hexagonal head screw with hole bolts (10), nuts (11), heavy spring washers (12), square bevel washers for channel steel (13), and cotter pins (14); the foundation impact response bracket (8) and the foundation vibration isolation bracket (2) adopt a gap plug-in structure; the foundation vibration isolation bracket (2) and the outdoor steel structure truss of the boiler top on site are welded and fixed. The invention relates to a structure in which a vibration-isolating rubber pad (4) is used to perform vibration-isolating treatment between the collision surfaces of the provided basic vibration-isolating bracket (2) and the basic impact-response bracket (8); a structure in which a welding fixation is used between the joint surfaces of the provided basic impact-response bracket (8) and the protective frame (7); a structure in which a vibration-isolating rubber pad (6) is used to perform vibration-isolating treatment between the vibration-contact surfaces of the provided protective frame (7) and the positioning plate (5); a structure in which the muffler (3) and the positioning plate (5) are welded and fixed; a structure in which a gap-insertion type is used between the provided basic vibration-isolating bracket (2) and the spring-link type damping vibration absorber (9); a structure in which a welding fixation is used between the provided basic impact-response bracket (8) and the spring-link type damping vibration absorber (9); The foundation vibration isolation bracket (2) has a through-hole channel steel armor (201), wherein the through-hole channel steel armor (201) and the channel steel cross beam (205), as well as the bracket end plate (202), are respectively welded and fixed; between the bracket end plate (202) and the bracket column (203), a structure is respectively welded and reinforced by rib plates (204); between the through-hole channel steel armor (201) and the four corners of the channel steel cross beam (205), a structure is respectively welded and reinforced by angle rib plates A (206); between the 2×4~d2 upper and lower through holes on the through-hole channel steel armor (201) and the elastic body connecting rod (901) on the spring connecting rod type damping vibration absorber (9), a gap plug-in structure is adopted; The spring-link type damping vibration absorber (9) has an elastic connecting rod (901), wherein the elastic connecting rod (901) and the connecting rod end plate (902) are welded and fixed; the elastic connecting rod (901) and: the 2×4-d2 upper and lower through holes on the through hole channel steel armor (201) on the basic vibration isolation bracket (2) are connected by a gap-plugging structure; the elastic connecting rod (901) and: the through hole channel steel armor (201) on the basic impact response bracket (8) are connected by a gap-plugging structure. The hole channel steel B (801) and the 2×4~d1 upper and lower through holes are welded and fixed; the elastic body connecting rod (901) and the connecting rod end plate (902) are welded and fixed for the purpose of using a damping rubber pad (903) for isolating high-frequency vibration and n disc springs (904) with supporting surfaces in series and in combination, and at the same time, to solve the problem of vibration displacement of slender elastic body: n disc springs (904) with supporting surfaces are combined and fixed in series. The invention relates to a vibration-absorbing and shaking problem of the disc spring (904) along its longitudinal axis, and can be used for passive vibration isolation and active vibration isolation of a large excitation force body - a basic impact response bracket (8), so that the spring-link damping vibration absorber (9) forms a reciprocating motion of its elastic body connecting rod (901) and transmits it to the vibrating body through the connecting rod spring, that is, the basic impact response bracket (8), the maximum amplitude of the heat absorption upward displacement or axial displacement is U less than the allowable value, and the surplus of sufficient space is h=2(U+n·f) {wherein: n is the effective number of turns of the disc spring (904) in series; f is the deformation of the disc spring (904) with a support surface [mm]; Ho is the free height of the disc spring (904) [mm]; U is the maximum amplitude of the heat absorption displacement longitudinal movement of the boiler high-temperature and high-pressure residual steam or gas venting tail pipe outlet pipe (1) [mm], or the maximum amplitude of the simple harmonic response axial displacement of the basic impact response bracket (8) [mm]}.

2. The pipeline heat absorption shock damping vibration elimination device of the small hole muffler for high pressure gas discharge as claimed in claim 1, characterized in that: include: The invention comprises a basic vibration isolation bracket (2), wherein a gap-inserted structure is adopted between the basic vibration isolation bracket (2) and the basic impact response bracket (8); a structure in which vibration is eliminated by using a vibration-eliminating rubber pad (4) between the collision surfaces of the basic vibration isolation bracket (2) and the basic impact response bracket (8); a structure in which a welding fixation is adopted between the basic impact response bracket (8) and the protective frame (7); a structure in which vibration is eliminated by using a vibration-eliminating rubber pad (6) between the protective frame (7) and the vibration contact surface of the positioning plate (5); a gap-inserted structure is adopted between the basic vibration isolation bracket (2) and the spring-link type damping vibration absorber (9); and a structure in which a welding fixation is adopted between the basic impact response bracket (8) and the spring-link type damping vibration absorber (9).

3. The pipeline heat absorption shock damping vibration elimination device of the high-pressure gas discharge small hole muffler as claimed in claim 1, characterized in that: The basic impact response bracket (8) includes: a through-hole channel steel B (801), wherein the through-hole channel steel B (801) and the through-hole channel steel C (802) are welded and fixed; between the four corners of the through-hole channel steel B (801) and the through-hole channel steel C (802) components: a structure reinforced by welding through a reinforced web (803); the 2×4~d1 upper and lower through holes on the through-hole channel steel B (801) and: a spring-link damping The elastic connecting rod (901) on the vibration absorber (9) is fixed by welding; the four upper through holes on the through-hole channel steel B (801) and the through-hole channel steel C (802) are structural forms compatible with the basic bolts for installing the vertically mounted silencer (3); however, the through-hole channel steel B (801) and the through-hole channel steel C (802) are respectively fixed by welding with the angle steel column (703) on the protective frame (7).

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