Ultra-high pressure steam or gas discharge small hole injection throttling pressure reduction composite venting muffler

Abstract

The present invention relates to a composite venting silencer for small-hole injection throttling and decompression for ultra-high-pressure steam or gas discharge, comprising: a first-level interface injection tube-barrel device, respectively connected with {throttling injection tube I tube-barrel device + throttling injection tube II tube-barrel device + throttling injection tube III tube-barrel device + throttling spray outer tube device - four layers are connected in parallel and graded and distributed layer by layer (pressure, temperature, specific volume and displacement) are respectively selected and set} to form five levels of small-hole variable frequency diffusion noise reduction chambers, and the structure adopts a small-hole injection throttling and decompression structure form respectively welded and fixed on the interface injection tube and between each level. Since the throttling area is very small, there is a diffusion cavity with a sufficiently large volume between the 'throttling and decompression and small-hole injection tube-barrel device chambers' of each level, so the expansion ratio is sufficiently large, which ensures a large amount of noise reduction. It is suitable for ultra-high-pressure steam or gas discharge venting conditions, and the noise reduction amount [insertion loss] can reach 50-65dB (A).

Description

Technical Field

[0001] The invention relates to a super-high-pressure steam or gas discharge small hole injection throttling pressure reduction composite venting silencer, which is a new type of super-high-pressure steam or gas venting discharge silencer and noise reduction device.

[0002] High-speed airflow is ejected from the container, impacting and shearing the surrounding static air, causing violent gas disturbance near the nozzle, thereby generating aerodynamic noise with a very high sound level, forming exhaust jet noise; for example, jet aircraft, rocket launches, etc. generate jet noise of 140-160dB(A), as well as boiler exhaust from thermal power plants, blast furnaces in the metallurgical industry, various gas emissions from chemical plants, exhaust venting from air compressors, etc., all of which will generate strong exhaust jet noise; this type of noise is continuous broadband noise, and the peak frequency is proportional to the airflow velocity and inversely proportional to the exhaust pipe diameter; when the airflow velocity at the exhaust port reaches the speed of sound, that is, when blocked, its noise sound power will also increase with the increase of injection pressure.

[0003] In order to reduce the exhaust jet noise, you can use a capacity expansion and pressure reduction, capacity expansion and speed reduction type muffler, or a throttling and pressure reduction type muffler, or a small hole injection type muffler; when the pressure is high, you can first use throttling and pressure reduction, and then use small hole injection; the small hole injection type muffler uses the principle of small hole variable frequency diffusion to reduce the exhaust port diameter and move the noise energy from low frequency to high frequency or ultra-high frequency, and move it to the audio frequency range that the human ear is not sensitive to; under the condition of ensuring the same exhaust volume, many small holes are used instead of a large nozzle to achieve the purpose of reducing the exhaust jet noise.

[0004] Venting exhaust noise, also known as injection noise, is a prominent source of pollution. For example, the exhaust of boilers in power plants, the venting of blast furnaces in the metallurgical industry, the 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 that the sound power of the noise generated is large, the exhaust pressure and airflow velocity are very high, and general mufflers can no longer be used.

[0005] The formation of injection noise is: the high-speed airflow of gas ejected from the nozzle produces strong noise; this type of noise is common in industrial production, such as the exhaust of high-pressure steam boilers in power plants, the exhaust and venting of special high-pressure containers in chemical plants, the exhaust of air compressors and various pneumatic tools, the exhaust and venting of engines in the jet aircraft and rocket manufacturing industries during test runs, etc.; this strong noise has a high sound power level, a wide frequency, and a large coverage area, which seriously pollutes the surrounding environment.

[0006] Venting exhaust is a high-speed airflow ejected from the pipe mouth, also known as a "jet". It is ejected from the pipe mouth. The adjacent atmosphere will move with it and be sucked in, and gradually diffuse along the jet direction, and the flow rate gradually decreases.

[0007] Jet noise has obvious directionality; the sound pressure levels in different directions from the nozzle are different, and the direction of the maximum sound pressure level is not in the direction of the airflow, but at an angle of 15 degrees to the direction of the airflow; the power of jet noise is proportional to the eighth power of the airflow velocity. When the flow velocity is fixed, the power is proportional to the nozzle area. Background Art

[0008] Exhaust silencers currently in use include a "KX-P type exhaust silencer" disclosed in Chinese Patent Publication No. 85202382.0, and a "KX-A type safety valve silencer" disclosed in Chinese Patent Publication No. 85202382.0. The KX-P and KX-A silencers are suitable for boiler steam discharge and other gas discharge silencers in industrial sectors such as petroleum, chemical, metallurgy, and textiles. They are all throttling and pressure reducing small hole injection type exhaust venting silencers. Although they have obvious The noise reduction effect, the muffler structure and the basic structure in the preferred embodiment have the following problems and disadvantages: the throttling and decompression stages are only 2 (i.e., the connecting pipe and the outer cylinder are composed of two-stage throttling and decompression tubes), the designed muffler noise reduction is generally between 20 and 25 dB (A), and the total length of the muffler body is relatively slender (i.e., ① the noise reduction is generally low; ② the installation space they occupy is also large; ③ when subjected to reaction force, the safety of mutual balance is also poor), etc.

[0009] For example, the Chinese patent publication number CN204493972U discloses "A high-pressure and high-temperature steam venting muffler" and its attached Figure 1-2 As shown, a first-stage throttling and pressure-reducing plate 3, five-layer throttling and pressure-reducing cylinder 9, a small hole injection layer of a shell 10, a head 12, a bottom sealing plate 1, and an air inlet pipe 5 and an inlet flange assembly 4 are composed, wherein the bottom sealing plate 1 at the rear end of the air inlet pipe 5, the five-layer throttling and pressure-reducing cylinder 9, the small hole injection layer of a shell 10, and the head 12 are composed of a concentric suit structure, which is mainly composed of 5 layers of throttling and pressure-reducing cylinders 9 (equivalent to multiple layers of perforated plates or perforated tubes), a small hole injection layer of a shell 10, and a head 12 which are "connected in series and welded" on a flat plate of a bottom sealing plate 1, a drain pipe 6, an air inlet pipe 5, and an inlet matching flange assembly 4. The limitations of the structural function are: the pressure p behind the multi-stage throttling orifice plate on the flat plate of the bottom sealing plate 1 mThe pressure and temperature of the pressure p1 before the orifice plate (equivalent to a multi-layer perforated plate or perforated tube) are different between each layer (such a rigidity design is a serious mistake in material mechanics, structural mechanics and mechanical design; because the five layers of throttling and pressure reducing cylinders 9 and a layer of small hole injection layer of the outer shell 10 "welded in series" on the bottom sealing plate 1 have very different working pressures and temperatures between each layer, so the bending, shaking, deformation between each layer on the bottom sealing plate 1 are different and very uneven, etc.), ..., the above-mentioned muffler must have sufficient rigidity and good processing quality to withstand ultra-high pressure, high temperature and high-speed gas. Impact, the purpose of determining the throttling and pressure reduction stages is to control the gas displacement and ensure that it works according to the designed flow rate; it is used for pressure reduction; it facilitates the strength design and processing of the small hole injection layer of the later stage; so it is difficult to guarantee the safety and reliability of using it in "ultra-high pressure steam / gas discharge" occasions (due to the uneven working pressure and temperature of various parts on the bottom sealing plate 1, in serious cases, the reinforcing rib plate 8 and a certain welding point on the bottom sealing plate 1 - a weak link point prone to local stress concentration - will be torn apart, causing unnecessary production accidents, etc.), and it can only be used for the limited defects of the muffler with high-pressure and high-temperature steam venting function. Summary of the invention

[0010] In order to solve the above problems, the technical solution adopted by the present invention to solve its technical problems is: to provide a super-high pressure steam or gas discharge small hole injection throttling pressure reduction composite venting silencer, including: a pipe end plate A with an external vortex removal and noise reduction frustum ① is welded at the end of the interface injection pipe, a sealing ring plate a with an external vortex removal and noise reduction frustum ② is welded on the interface injection pipe, the sealing ring plate a is welded and fixed to the throttling injection pipe I, the other end of the throttling injection pipe I is welded and fixed to the pipe end plate B with the external vortex removal and noise reduction frustum ③, a sealing ring plate b with an external vortex removal and noise reduction frustum ④ is welded on the interface injection pipe of the outer cavity of the throttling injection pipe I, and the sealing ring plate b is welded to the throttling injection pipe The injection pipe II is welded and fixed, the other end of the throttling injection pipe II is welded and fixed to the pipe end plate C with an external vortex removal and noise reduction cone ⑤, a sealing ring plate c with an external vortex removal and noise reduction cone ⑥ is welded on the interface injection pipe of the outer cavity of the throttling injection pipe II, the sealing ring plate c is welded and fixed to the throttling injection pipe III, the other end of the throttling injection pipe III is welded and fixed to the pipe end plate D with an external vortex removal and noise reduction cone ⑦ and the heat displacement absorption and safety guide rod, the front elliptical head with N hydrophobic holes is welded on one side of the air inlet of the interface injection pipe of the outer cavity of the throttling injection pipe III, the front elliptical head is welded and fixed to the throttling spray outer cylinder, and the rear elliptical head is welded on the other end of the throttling spray outer cylinder The top of the circular head is welded with a heat displacement absorption and safety guide rod for the interface injection pipe. The heat displacement absorption and safety guide rod is welded with a reinforcing rib plate A at the outer joint of the rear elliptical head. A reinforcing web with a supporting connecting plate and a reinforcing rib plate B is welded on the support force point of the throttling spray outer cylinder. The above-mentioned related components are firmly fixed by welding to form a complete set of products. This complete set of products is a combination of small hole injection and throttling pressure reduction emission. It is compounded by an appropriately and reasonably optimized structure to achieve five levels of throttling: the first level throttling pressure reduction and small hole injection variable frequency diffusion reduction Noise cavity - that is, the interface injection pipe with a tube end plate A welded at the end, the second-level throttling pressure reduction and small hole injection frequency conversion diffusion noise reduction cavity - that is, the two ends of the throttling injection pipe I are respectively welded with a sealing ring plate a and a tube end plate B, the third-level throttling pressure reduction and small hole injection frequency conversion diffusion noise reduction cavity - that is, the two ends of the throttling injection pipe II are respectively welded with a sealing ring plate b and a tube end plate C, the fourth-level throttling pressure reduction and small hole injection frequency conversion diffusion noise reduction cavity - that is, the two ends of the throttling injection pipe III are respectively welded with a sealing ring plate c and a tube end plate D, the fifth-level throttling pressure reduction and small hole injection frequency conversion diffusion noise reduction cavity - that is, the throttling spray outer cylinder with front and rear elliptical heads welded at both ends.

[0011] A further technical solution to achieve the purpose of the above-mentioned technical solution of the present invention is: to provide a super-high pressure steam or gas discharge small hole injection throttling pressure reduction composite venting silencer, including: the geometric angle between the frustum side edge of the vortex removal and noise reduction frustum ① and the end face of the tube end plate A is 60°; the geometric angle between the frustum side edge of the vortex removal and noise reduction frustum ② and the end face of the sealing ring plate a is 45°, and the geometric angle between the frustum side edge of the vortex removal and noise reduction frustum ③ and the end face of the tube end plate B is 45°; the geometric angle between the frustum side edge of the vortex removal and noise reduction frustum ④ and the end face of the sealing ring plate b is 45°, and the geometric angle between the frustum side edge of the vortex removal and noise reduction frustum ⑤ and the end face of the tube end plate C is 45°; the geometric angle between the frustum side edge of the vortex removal and noise reduction frustum ⑥ and the end face of the sealing ring plate c is 45°, and the geometric angle between the frustum side edge of the vortex removal and noise reduction frustum ⑦ and the end face of the tube end plate D is 45°.

[0012] A further technical solution to achieve the purpose of the above-mentioned technical solution of the present invention is: to provide a small-hole injection throttling and pressure-reducing composite venting silencer for ultra-high pressure steam or gas discharge, including: in an ultra-high pressure steam or gas discharge composite venting silencer, an interface injection pipe inlet of the complete set of products is realized, which is suitable for exhaust steam or gas design temperature T≤600℃ and design pressure between 9.81Mpa<P≤18.9MPa. The opening flow section of the complete set of products is designed and controlled to be 1.5 to 2 times the section of the exhaust steam or gas valve [when fully open]. In order to consider processing and clogging problems, the small-hole injection aperture is not greater than 5mm, and the hole center distance should be at least greater than or equal to 6 to 10 times the aperture.

[0013] A further technical solution to achieve the purpose of the above-mentioned technical solution of the present invention is: to provide a small-hole injection throttling and decompression composite venting silencer for ultra-high pressure steam or gas discharge, including: realizing that the complete set of products is suitable for ultra-high pressure steam or gas discharge venting conditions, and the noise reduction [insertion loss] can reach 50 to 65 dB (A).

[0014] A further technical solution to achieve the purpose of the above-mentioned technical solution of the present invention is: to provide an ultra-high pressure steam or gas discharge small hole injection throttling and decompression composite venting silencer, including: at the end position of the front elliptical head on one side of the interface injection pipe, N hydrophobic holes are evenly distributed in a ring, the aperture of the hydrophobic holes is the same as the aperture of the holes on the throttling spray outer cylinder, and the number of hydrophobic holes is designed and determined according to the technical requirements of the displacement size of the "silencer". BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 Front view of the kit according to an embodiment of the present invention.

[0017] Figure 2Rear view of a kit according to an embodiment of the present invention.

[0018] Figure 3 A top view of a kit according to an embodiment of the present invention.

[0019] Figure 4 Bottom view of a kit according to an embodiment of the present invention.

[0020] Figure 5 A left side view of a kit according to an embodiment of the present invention.

[0021] Figure 6 A right side view of a kit according to an embodiment of the present invention.

[0022] Figure 7 Kit of Embodiments of the Present Invention Figure 1 Enlarged view of the AA section.

[0023] Figure 8 Kit of Embodiments of the Present Invention Figure 1 Enlarged view of the mm section.

[0024] Fig. 9 Kit of Embodiments of the Present Invention Figure 2 A local enlarged view of the K direction.

[0025] Figure 5 Middle: 506.N hydrophobic pores.

[0026] Figure 8 Middle: 101. Interface injection pipe; 102. Tube end plate A; 103. Vortex elimination truncated table ①; 201. Throttling injection pipe Ⅰ; 202. Blocking ring plate a; 203. Tube end plate B; 204. Vortex elimination and noise elimination truncated table ②; 205. Vortex elimination and noise elimination truncated table ③; 301. Throttling injection pipe Ⅱ; 302. Blocking ring plate b; 303. Tube end plate C; 304. Vortex elimination and noise elimination truncated table ④; 305. Vortex elimination and noise elimination truncated table ⑤; 401. Throttling injection pipe Ⅲ; 4 02. Sealing ring plate c; 403. Pipe end plate D; 404. Vortex removal and noise reduction cone ⑥; 405. Vortex removal and noise reduction cone ⑦; 501. Throttling spray outer cylinder; 502. Front elliptical head; 503. Rear elliptical head; 504. Reinforcement rib plate A; 505. Absorbing thermal displacement and safety guide rod; 601. Support connection plate; 602. Reinforcement rib plate B; 603. Reinforced web plate; 701. Positioning and safety flange; 702. Reinforcement rib plate C.

[0027] Fig. 9 Chinese: 710. Positioning and safety flange (welded at the installation site); 702. Reinforcement plate C (welded at the installation site). DETAILED DESCRIPTION

[0028] exist Figure 5 , Figure 8 , Fig. 9In the illustrated embodiment, a super-high-pressure steam or gas discharge small-hole injection throttling and decompression composite venting silencer provided by the present invention comprises: a pipe end plate A102 with an external vortex removal and noise reduction cone ①103 is welded to the end of the interface injection pipe 101, and a sealing ring plate a202 with an external vortex removal and noise reduction cone ②204 is welded to the interface injection pipe 101, the sealing ring plate a202 is welded and fixed to the throttling injection pipe Ⅰ201, and the other end of the throttling injection pipe Ⅰ201 is welded and fixed to the pipe end plate B203 with an external vortex removal and noise reduction cone ③205, and a sealing ring plate with an external vortex removal and noise reduction cone ④304 is welded to the interface injection pipe 101 of the outer cavity of the throttling injection pipe Ⅰ201. b302, the plugging ring plate b302 is welded and fixed to the throttling injection pipe II 301, the other end of the throttling injection pipe II 301 is welded and fixed to the pipe end plate C303 with an external vortex removal and noise reduction cone ⑤305, and the interface injection pipe 101 of the outer cavity of the throttling injection pipe II 301 is respectively welded with: a plugging ring plate c402 with an external vortex removal and noise reduction cone ⑥404, the plugging ring plate c402 is welded and fixed to the throttling injection pipe III 401, the other end of the throttling injection pipe III 401 is welded and fixed to the pipe end plate D403 with an external vortex removal and noise reduction cone ⑦405 and a heat displacement absorption and safety guide rod 505, and the air inlet side of the interface injection pipe 101 of the outer cavity of the throttling injection pipe III 401 is welded with N small hydrophobic The front elliptical head 502 of the hole 506 is welded and fixed to the throttling spray outer cylinder 501. The top of the rear elliptical head 503 welded on the other end of the throttling spray outer cylinder 501 is welded with a heat absorbing displacement and safety guide rod 505 for the interface injection pipe 101. The heat absorbing displacement and safety guide rod 505 and the outer joint of the rear elliptical head 503 are welded with a reinforcing rib plate A 504. On the support bearing point of the throttling spray outer cylinder 501, a reinforcing web 603 with a supporting connecting plate 601 and a reinforcing rib plate B 602 is welded. The top of the heat absorbing displacement and safety guide rod 505 should be welded at the installation site of the complete set of products: The positioning of the reinforcing rib plate C 702 and the safety flange 701, the above related components are all firmly fixed by welding to form a complete set of products. The complete set of products is based on the two combined noise reduction principles of small hole injection and throttling pressure reduction emission, and is compounded through appropriate and reasonable optimized structures to achieve five levels of throttling levels: the first level throttling pressure reduction and small hole injection variable frequency diffusion noise reduction cavity - that is, the interface injection pipe 101 with a tube end plate A102 welded at the end; the second level is the throttling pressure reduction and small hole injection variable frequency diffusion noise reduction cavity designed to further improve the noise reduction amount on the basis of the first level - that is, the two ends of the throttling injection pipe I201 are respectively welded with a sealing ring plate a202 and a tube end plate B203,The third level is a throttling pressure reduction and small hole injection frequency conversion diffusion noise reduction chamber designed to further improve the sound attenuation on the basis of the second level - that is, the two ends of the throttling injection pipe II 301 are respectively welded with a sealing ring plate b302 and a tube end plate C303. The fourth level is a throttling pressure reduction and small hole injection frequency conversion diffusion noise reduction chamber designed to further improve the sound attenuation on the basis of the third level - that is, the two ends of the throttling injection pipe III 401 are respectively welded with a sealing ring plate c402 and a tube end plate D403. The fifth level is a throttling pressure reduction and small hole injection frequency conversion diffusion noise reduction chamber designed to further improve the sound attenuation on the basis of the fourth level - that is, the throttling spray outer cylinder 501 with a front elliptical head 502 and a rear elliptical head 503 respectively welded at both ends. ,

[0029] exist Figure 8 In the further embodiment shown, a super-high pressure steam or gas discharge small hole injection throttling and decompression composite venting silencer of the present invention, in order to eliminate and avoid the secondary, tertiary or quaternary regenerative noise and superimposed noise formed by the vortex generated during the injection of super-high pressure and high-speed airflow in the above-mentioned five levels of 'throttling and decompression and small hole injection variable frequency diffusion noise reduction cavity tube', and at the same time, to achieve the purpose of better strength and rigidity of the overall structure of the kit product, etc., includes: the geometric angle between the side edge of the truncated cone ①103 of the set vortex removal and noise reduction truncated cone and the end face of the tube end plate A102 is 60°; the side edge of the truncated cone ②204 of the set vortex removal and noise reduction truncated cone and the end face of the tube end plate A102 is 60°; The geometric angles of the end face of the sealing ring plate a202 are 45°, and the geometric angles of the frustum side of the vortex removal and noise elimination frustum ③205 and the end face of the tube end plate B203 are 45°; the geometric angles of the frustum side of the vortex removal and noise elimination frustum ④304 and the end face of the sealing ring plate b302 are 45°, and the geometric angles of the frustum side of the vortex removal and noise elimination frustum ⑤305 and the end face of the tube end plate C303 are 45°; the geometric angles of the frustum side of the vortex removal and noise elimination frustum ⑥404 and the end face of the sealing ring plate c402 are 45°, and the geometric angles of the frustum side of the vortex removal and noise elimination frustum ⑦405 and the end face of the tube end plate D403 are 45°.

[0030] exist Figure 8In the further embodiment shown, an ultra-high pressure steam or gas discharge small hole injection throttling pressure reducing composite venting silencer of the present invention provides an ultra-high pressure steam or gas discharge composite venting silencer, which realizes the interface injection pipe 101 inlet of the complete set of products, and is suitable for exhaust steam or gas design temperature T≤600℃, design pressure 9.81MPa<P≤18.9MPa. The device adopts the frequency shift principle, that is, the principle of small hole frequency conversion diffusion is used to reduce the discharge port diameter, and the noise energy is moved from low frequency to high frequency or ultra-high frequency, and moved to the range insensitive to human ears. Under the condition of ensuring the same exhaust volume, many small holes are used to replace a large nozzle, that is, It can achieve the purpose of reducing the exhaust noise of steam or gas jet. To ensure smooth exhaust, the opening flow section of the kit product is designed to be 1.5 to 2 times the exhaust valve section (when fully open). In order to consider processing and clogging problems, the small hole injection aperture is not greater than 5mm, the hole center distance should be at least 6 to 10 times the aperture, and the hole group components are arranged at a certain geometric pitch; the kit product must have sufficient strength and good processing quality to withstand the impact of ultra-high pressure, high temperature and high-speed steam or gas. The purpose of determining the throttling and pressure reduction stages is to control the steam or gas displacement and ensure that it works according to the designed flow rate; it is also used for pressure reduction; for the rear stage small hole spray The strength design and processing of the injection expansion chamber bring convenience; in terms of engineering design, in order to consider the simple structure and convenient processing, it is composed of: a first-level interface injection pipe 101 tube-barrel device {+} four-level parallel distribution (pressure, temperature, specific volume and displacement) - respectively select and set: throttling injection pipes Ⅰ201, Ⅱ301 and Ⅲ401 tube-barrel devices and throttling spray outer cylinder 501 tube-barrel device, which are respectively welded and fixed on the interface injection pipe 101, and the small hole injection throttling decompression structure between each level can play a role in reducing pressure and noise at each level, ensuring that there must be a large enough expansion cavity between the throttling decompression and small hole injection levels to allow the gas after decompression to fully expand, and at the same time The small hole injection and throttling pressure relief stages must have a large enough flow cross section to reduce the pressure drop before and after the small hole injection; and the kit product should ensure the safety of the pipeline during hot operation; when the safety valve (or power release valve) uses a muffler, it should not affect the displacement, take-off and return seat of the safety valve; it should be able to withstand the high-speed impact, erosion and transient force of the working fluid; the inside of the interface injection pipe 101 barrel of the kit product, the throttling injection pipes Ⅰ201, Ⅱ301 and Ⅲ401 barrels and the throttling spray outer barrel 501 barrel should be clean, the small holes should be unobstructed and free of burrs, and the throttling spray outer barrel 501 and other structural components should be made of stainless steel, etc.

[0031] exist Figure 8In the further embodiment shown, a super-high pressure steam or gas discharge small hole injection throttling pressure reducing composite venting silencer of the present invention comprises: a first stage is a small hole variable frequency diffusion noise reduction chamber composed of an interface injection pipe 101 cylinder, which is respectively connected with a first layer of a small hole variable frequency diffusion noise reduction chamber composed of a throttling injection pipe Ⅰ201 cylinder + a second layer of a small hole variable frequency diffusion noise reduction chamber composed of a throttling injection pipe Ⅱ301 cylinder + a third layer of a small hole variable frequency diffusion noise reduction chamber composed of a throttling injection pipe Ⅲ401 cylinder + a fourth layer of a small hole variable frequency diffusion noise reduction chamber composed of a throttling spray outer cylinder 501 - {four layers in parallel and graded distribution (pressure, temperature, specific volume and displacement) are selected and set respectively} using respectively The structure of the small hole injection throttling and decompression between each level is welded and fixed on the interface injection pipe 101. The sound waves of ultra-high pressure steam or gas pass through the interface injection pipe 101 into a diffusion noise reduction chamber and then into another diffusion noise reduction chamber until they are injected into the diffusion noise reduction chamber composed of the throttling spray outer cylinder 501, the front elliptical head 502 and the rear elliptical head 503 and then discharged outward. Since the throttling area is very small, there is a diffusion cavity with a large enough volume between the 'throttling and decompression and small hole injection tube chamber' of each level, so the expansion ratio is large enough, which ensures a large amount of sound attenuation. It is suitable for ultra-high pressure steam or gas discharge and venting conditions, and the noise reduction [insertion loss] can reach 50-65dB (A).

[0032] exist Figure 5 , Figure 8 , Fig. 9In the further embodiment shown, a super-high-pressure steam or gas discharge small hole injection throttling decompression composite venting muffler of the present invention is designed to solve the problem that the conventional drain pipe of φ25×L=200 (mm) has a large single pipe outlet diameter and is concentrated in a drain pipe for jet venting, so it will produce a large regeneration jet noise during draining, etc. For this reason, the kit product includes: at the terminal position on the front elliptical head 502 on one side of the interface injection pipe 101, N drain holes 506 are evenly distributed in an annular manner, and the aperture of the drain holes 506 is the same as the aperture of the holes on the throttling spray outer cylinder 501, and the number of drain holes 506 is designed and determined according to the technical requirements of the displacement size of the kit product; at the same time, in order to realize the safety of the kit product when the pipeline is working in a hot state, and the safety valve (or power release valve) is used for the silencer, it should not affect the safety The safety and reliability of the valve's displacement, take-off and return to the seat, etc., the top end of the rear elliptical head 503 on the throttling spray outer cylinder 501 is welded with the interface injection pipe 101 to absorb the thermal displacement and the safety guide rod 505, and the top end of the thermal displacement absorption and safety guide rod 505 should be welded with: a displacement positioning and safety flange 701 with a reinforcing rib plate C 702 on the outside at the installation site of the complete set of products, and the thermal displacement absorption and safety guide rod 505 and the positioning and safety flange 701 must be designed with a safe and reliable displacement stroke based on the technical requirements of the complete set of products and the actual needs of the installation site {that is, based on the engineering working conditions requirements of the maximum horizontal displacement and upward displacement of the interface injection pipe 101 to absorb the thermal displacement}, and the net spacing H value should be sufficiently greater than: the maximum value of the upward displacement (or axial displacement), and at the same time, ensure that the clearance margin of the horizontal displacement (or radial displacement) is sufficient and redundant and other safety factors.

[0033] exist Figure 5 , Figure 8 , Fig. 9 In the further embodiment shown, in a super-high pressure steam or gas discharge small hole injection throttling and decompression composite venting silencer device of the present invention, in a certain embodiment one: the process design performance parameter values ​​are as shown in Table ㈠ below.

[0034] Example 1: Process Design Performance Parameter Value Table (I)

[0035]

[0036]

[0037] exist Figure 5 , Figure 8 , Fig. 9In the further embodiment shown, in a super-high pressure steam or gas discharge small hole injection throttling and decompression composite venting silencer device of the present invention, a certain embodiment 2: the process design performance parameter values ​​are as shown in Table 2.

[0038] Example 2: Process Design Performance Parameter Value Table (II)

[0039]

[0040] exist Figure 5 , Figure 8 , Fig. 9 In the further embodiment shown, in a super-high pressure steam or gas discharge small hole injection throttling and decompression composite venting silencer device of the present invention, a certain embodiment three: the process design performance parameter values ​​are as shown in Table ㈢ below.

[0041] Example 3: Process Design Performance Parameter Value Table (III)

[0042]

Claims

1. A super-high pressure steam or gas discharge small hole injection throttling pressure reduction composite venting muffler, characterized in that: The invention comprises: a pipe end plate A (102) with an external vortex removal and noise reduction truncated cone ① (103) is welded at the end of an interface injection pipe (101); a sealing ring plate a (202) with an external vortex removal and noise reduction truncated cone ② (204) is welded on the interface injection pipe (101); the sealing ring plate a (202) is welded and fixed to a throttling injection pipe I (201); the other end of the throttling injection pipe I (201) is welded and fixed to a pipe end plate B (203) with an external vortex removal and noise reduction truncated cone ③ (205); a sealing ring plate b (302) with an external vortex removal and noise reduction truncated cone ④ (304) is welded on the interface injection pipe (101) of the outer cavity of the throttling injection pipe I (201); the sealing ring plate b (302) is welded and fixed to the throttling injection pipe II (3 01) is welded and fixed, the other end of the throttling injection pipe II (301) is welded and fixed to the pipe end plate C (303) with an external vortex removal and noise reduction truncated cone ⑤ (305), a sealing ring plate c (402) with an external vortex removal and noise reduction truncated cone ⑥ (404) is welded on the interface injection pipe (101) of the outer cavity of the throttling injection pipe II (301), the sealing ring plate c (402) is welded and fixed to the throttling injection pipe III (401), the other end of the throttling injection pipe III (401) is welded and fixed to the pipe end plate D (403) with an external vortex removal and noise reduction truncated cone ⑦ (405) and a heat displacement absorption and safety guide rod (505), the air inlet side of the interface injection pipe (101) of the outer cavity of the throttling injection pipe III (401) is welded with a small hydrophobic rod having N holes. The front elliptical head (502) of the hole (506) is welded and fixed to the throttling spray outer cylinder (501). The top of the rear elliptical head (503) is welded to the other end of the throttling spray outer cylinder (501). A heat displacement absorption and safety guide rod (505) for connecting the injection pipe (101) is welded. A reinforcing rib plate A (504) is welded to the outer joint of the heat displacement absorption and safety guide rod (505) and the rear elliptical head (503). A reinforcing web (603) with a supporting connection plate (601) and a reinforcing rib plate B (602) is welded to the support bearing point of the throttling spray outer cylinder (501). The muffler realizes five throttling levels. Level: The first level throttling pressure reduction and small hole injection frequency conversion diffusion noise reduction chamber - that is, the interface injection pipe (101) with a tube end plate A (102) is welded at the end; the second level throttling pressure reduction and small hole injection frequency conversion diffusion noise reduction chamber - that is, the two ends of the throttling injection pipe I (201) are respectively welded with a sealing ring plate a (202) and a tube end plate B (203); the third level throttling pressure reduction and small hole injection frequency conversion diffusion noise reduction chamber - that is, the two ends of the throttling injection pipe II (301) are respectively welded with a sealing ring plate b (302) and a tube end plate C (303); the fourth level throttling pressure reduction and small hole injection frequency conversion diffusion noise reduction chamber - that is, the two ends of the throttling injection pipe III (401) are respectively welded with a sealing ring plate c (402) and a tube end plate D (403);The fifth-level throttling pressure reduction and small hole injection variable frequency diffusion noise reduction chamber, i.e., the throttling spray outer cylinder (501) with a front elliptical head (502) and a rear elliptical head (503) welded at both ends, can reduce noise by 50 to 65 dB [A].

2. The ultra-high pressure steam or gas discharge small hole injection throttling pressure reduction composite venting muffler as claimed in claim 1, characterized in that: include: The geometric angle between the truncated cone side edge of the vortex removal and noise reduction truncated cone ① (103) and the end face of the tube end plate A (102) is 60°; the geometric angle between the truncated cone side edge of the vortex removal and noise reduction truncated cone ② (204) and the end face of the sealing ring plate a (202) is 45°; the geometric angle between the truncated cone side edge of the vortex removal and noise reduction truncated cone ③ (205) and the end face of the tube end plate B (203) is 45°; the geometric angle between the truncated cone side edge of the vortex removal and noise reduction truncated cone ④ (304) and the end face of the sealing ring plate a (202) is 45°. The geometric angle of the end face of the blocking ring plate b (302) is 45°, and the geometric angle between the side edge of the vortex removal and noise reduction frustum ⑤ (305) and the end face of the tube end plate C (303) is 45°; the geometric angle between the side edge of the vortex removal and noise reduction frustum ⑥ (404) and the end face of the blocking ring plate c (402) is 45°, and the geometric angle between the side edge of the vortex removal and noise reduction frustum ⑦ (405) and the end face of the tube end plate D (403) is 45°.

3. The ultra-high pressure steam or gas discharge small hole injection throttling pressure reduction composite venting muffler as claimed in claim 1, characterized in that: In an ultra-high pressure steam or gas discharge composite venting silencer, an interface injection pipe (101) inlet of an ultra-high pressure steam or gas discharge small hole injection throttling pressure reducing composite venting silencer is suitable for exhaust steam or gas design temperature T≤600°C and design pressure 9.81Mpa<P≤18.9MPa. The opening flow cross section of the ultra-high pressure steam or gas discharge small hole injection throttling pressure reducing composite venting silencer is designed and controlled to be 1. 5 to 2 times, the diameter of the small hole injection hole is not greater than 5 mm, and the hole center distance should be at least greater than or equal to 6 to 10 times the hole diameter. At the upper end position of the front elliptical head (502) on one side of the interface injection pipe (101), N hydrophobic small holes (506) are evenly distributed in an annular manner. The diameter of the hydrophobic small holes (506) is the same as the diameter of the small holes on the throttling spray outer cylinder (501). The number of hydrophobic small holes (506) is designed and determined according to the technical requirements of the displacement size of the muffler.

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