Pressure relief silencer for industrial high-temperature steam transmission pipeline

Abstract

The utility model discloses a pressure relief silencer for an industrial high-temperature steam transmission pipeline, which belongs to the technical field of heat energy engineering, and adopts the technical scheme that the pressure relief silencer comprises a shell, a pressure relief silencing component is arranged at the top of the shell, and a backflushing filtering component is arranged in the shell. The pressure relief and noise reduction assembly comprises a noise reduction inlet cavity fixedly connected to the top of the shell, a heat insulation sleeve is arranged on the outer side of the noise reduction inlet cavity, a sprue spreader is fixedly connected into the noise reduction inlet cavity, and a noise reduction cavity is fixedly connected into the shell. The problems that due to the fact that an existing pressure relief silencer for the industrial high-temperature steam transmission pipeline is inconvenient to effectively control broadband noise in a high-temperature environment, noise elimination materials are prone to losing efficacy due to high-temperature aging, the durability of the noise elimination effect is affected, noise elimination performance is reduced due to the fact that a noise elimination cavity is prone to being blocked by impurities, and the noise elimination effect is affected can be solved. Therefore, frequent manual disassembly and cleaning are needed, and the continuous operation efficiency of the equipment is influenced.

Description

Technical Field

[0001] This utility model relates to the field of thermal energy engineering technology, and in particular to a pressure relief silencer for industrial high-temperature steam transmission pipelines. Background Technology

[0002] In modern industrial production, many fields such as energy, chemical industry, and metallurgy rely heavily on high-temperature steam transmission pipeline systems to transport heat and power. During the operation of high-temperature steam pipeline systems, factors such as equipment start-up and shutdown, load adjustment, and abnormal operating conditions may cause the internal pressure of the pipeline to rise sharply, exceeding the upper limit of the system's design pressure. At this time, it is necessary to discharge the excess steam through a pressure relief device to ensure the safe and stable operation of the pipeline and related equipment. However, during the rapid pressure relief of steam, the high-speed jet of steam mixes violently with the air, generating high-intensity noise, with a sound pressure level that can typically reach over 100 decibels. This not only seriously damages the hearing of operators and interferes with normal production operations and dispatching, but also causes noise pollution to the surrounding environment, leading to environmental problems.

[0003] In industrial production processes, a large amount of waste heat steam is generated. This waste heat steam is often recycled and reused multiple times. During the utilization process, in order to balance the system pressure, a small portion of the waste heat steam is directly discharged into the atmosphere for pressure relief. This discharged steam is often accompanied by a certain pressure. When directly discharged, it brings certain dangers and noise pollution to the working environment of factories and mines. Therefore, a waste heat steam pipeline pressure relief and noise reduction emission system device is proposed to solve the problems mentioned in the background above.

[0004] The existing patent (publication number: CN220727952U) discloses a waste heat steam pipeline pressure relief and noise reduction emission system. By setting up a pressure relief and noise reduction structure, hot steam containing moisture is first introduced into a gas-liquid separator through a steam inlet for gas-liquid separation. The dry and clean steam is then transported to the next process through a steam outlet. A transmission pipeline is installed on the gas-liquid separator, and the pressure relief and noise reduction emission device is installed on this transmission pipeline. When the amount of waste heat steam discharged is uneven, the amount and flow rate of waste heat steam in the transmission pipeline are adjusted by rotating a manual shut-off valve. Then, a pressure regulating device is used to gradually reduce the pressure of the waste heat steam to a normal pressure state. After noise reduction by a pipeline silencer device, the steam is discharged. By performing pressure relief and noise reduction treatment on the waste heat steam transmission pipeline, this part of the steam is discharged in a normal low-pressure form, reducing noise pollution and effectively eliminating the dangerous factors of pressurized steam.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, existing industrial high-temperature steam transmission pipeline pressure relief silencers are not convenient for effectively controlling broadband noise in high-temperature environments. This leads to the silencing material being prone to aging and failure due to high temperatures, affecting the durability of the silencing effect. Furthermore, the silencing performance is easily reduced due to impurities clogging the silencing cavity, requiring frequent manual disassembly and cleaning, which affects the continuous operation efficiency of the equipment.

[0006] To address this, a pressure relief silencer for industrial high-temperature steam transmission pipelines is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a pressure relief silencer for industrial high-temperature steam transmission pipelines, which can solve the problems of existing pressure relief silencers for industrial high-temperature steam transmission pipelines, which are not convenient for effectively controlling broadband noise in high-temperature environments. As a result, the sound-absorbing materials are prone to aging and failure due to high temperatures, affecting the durability of the sound-absorbing effect. Moreover, the sound-absorbing performance is easily reduced due to impurities clogging the sound-absorbing cavity, thus requiring frequent manual disassembly and cleaning, which affects the continuous operation efficiency of the equipment.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a pressure relief silencer for industrial high-temperature steam transmission pipelines, comprising a housing, a pressure relief silencer assembly disposed on the top of the housing, and a backwash filter assembly disposed inside the housing;

[0009] The pressure relief and silencing assembly includes a silencing inlet cavity fixedly connected to the top of the housing, a heat insulation sleeve provided on the outside of the silencing inlet cavity, a flow divider cone fixedly connected inside the silencing inlet cavity, a silencing cavity fixedly connected inside the housing, a guide plate fixedly connected inside the silencing cavity, the guide plate being located at the bottom of the flow divider cone, a sound-absorbing honeycomb module fixedly connected inside the silencing cavity, and a silencing tailpipe fixedly connected to the bottom of the silencing cavity.

[0010] Preferably, the backwash filter assembly includes a support plate fixedly connected to the outside of the housing, a water storage tank fixedly connected to the top of the support plate, a connecting pipe connected to the top of the water storage tank, and a micro pump disposed on the outside of the connecting pipe.

[0011] Preferably, the inner side of the connecting pipe is connected to a backwash nozzle, and the backwash nozzle is fixedly connected to the silencing cavity.

[0012] Preferably, a filter screen is fixedly connected inside the silencing cavity, and the filter screen is located at the top of the backwash nozzle.

[0013] Preferably, the top of the silencer inlet is connected to a steam inlet pipe, a control valve is provided on the outside of the steam inlet pipe, and a flow monitor is provided at the bottom of the steam inlet pipe.

[0014] Preferably, the bottom of the silencing cavity is connected to a condensate drain pipe, and the right side of the bottom of the silencing cavity is connected to a steam drain pipe.

[0015] Preferably, a high-temperature resistant sealing ring is fitted at the bottom of the steam inlet pipe, and the high-temperature resistant sealing ring is made of silicone rubber.

[0016] Preferably, the interior of the housing is provided with sound-absorbing cotton, which is located on the outside of the sound-absorbing cavity.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application achieves effective depressurization of high-temperature steam and significant noise reduction through the pressure relief and silencing component. Compared with traditional pressure relief and silencing devices, this pressure relief and silencing component achieves multi-level control of noise during the high-temperature steam depressurization process through the synergistic effect of various components. It solves the problems of reduced noise reduction performance of traditional silencers in high-temperature environments and limited control effect on broadband noise. It can effectively reduce noise to a level that meets environmental protection standards, while ensuring the safety and stability of the depressurization process.

[0019] 2. This application achieves automatic cleaning of the filter screen through the backwash filter component, which prevents impurities from clogging the filter screen, improves the smooth flow inside the silencer chamber and the stability of the silencer effect. Compared with the traditional industrial high-temperature steam transmission pipeline pressure relief silencer, it solves the problem that the traditional device requires frequent manual disassembly and cleaning and is prone to blockage affecting the silencer effect. It can ensure that the silencer chamber maintains a good flow state for a long time, maintain the normal working performance of the silencer, and reduce equipment failure and downtime maintenance time caused by filtration problems. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the industrial high-temperature steam transmission pipeline pressure relief silencer of this utility model;

[0021] Figure 2 This is a cross-sectional view of the shell of this utility model;

[0022] Figure 3 This is a schematic diagram of the pressure relief and noise reduction assembly of this utility model;

[0023] Figure 4 This is a schematic diagram of the backwash filter assembly of this utility model;

[0024] Figure 5 This is a schematic diagram of the steam inlet pipe of this utility model.

[0025] In the diagram, 1. Shell; 2. Condensate drain pipe; 3. Steam drain pipe; 4. Pressure relief and silencing assembly; 401. Silencing inlet cavity; 402. Heat insulation sleeve; 403. Flow divider cone; 404. Silencing cavity; 405. Guide plate; 406. Sound-absorbing honeycomb module; 407. Silencing tailpipe; 5. Backwash filter assembly; 501. Support plate; 502. Water storage tank; 503. Connecting pipe; 504. Micro pump; 505. Backwash nozzle; 506. Filter screen; 6. Steam inlet pipe; 7. Control valve; 8. Flow monitor; 9. High-temperature resistant sealing ring; 10. Sound insulation cotton. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] An industrial high-temperature steam transmission pipeline pressure relief silencer includes a housing 1, a pressure relief silencer assembly 4 is provided on the top of the housing 1, and a backwash filter assembly 5 is provided inside the housing 1.

[0029] The pressure relief and silencing assembly 4 includes a silencing inlet 401 fixedly connected to the top of the housing 1, a heat insulation sleeve 402 provided on the outside of the silencing inlet 401, a flow divider cone 403 fixedly connected inside the silencing inlet 401, a silencing cavity 404 fixedly connected inside the housing 1, a guide plate 405 fixedly connected inside the silencing cavity 404, the guide plate 405 being located at the bottom of the flow divider cone 403, a sound-absorbing honeycomb module 406 fixedly connected inside the silencing cavity 404, and a silencing tailpipe 407 fixedly connected to the bottom of the silencing cavity 404.

[0030] In this embodiment: by activating the control valve 7 of the steam inlet pipe 6, high-temperature steam enters the silencer inlet cavity 401. The heat insulation sleeve 402 on the outside of the silencer inlet cavity 401 blocks the transfer of steam heat to the shell 1, protecting the shell 1 and external components from high temperatures. Then, the steam encounters the diversion cone 403 in the silencer inlet cavity 401 and is evenly dispersed into multiple airflows, avoiding high-intensity noise caused by concentrated steam injection. The dispersed steam flows downward into the silencer cavity 404 inside the shell 1. The guide plate 405 guides the steam to flow evenly, preventing the steam from forming turbulence and generating additional noise. When the steam flows through the sound-absorbing honeycomb module 406, the mid-to-high frequency noise sound waves enter the tiny pores inside the module and are converted into heat energy and absorbed through friction and damping. The steam that has been treated with sound absorption continues to flow downward to the silencer tailpipe 407. The silencer tailpipe 407 further slows down the steam and reduces noise. Finally, the steam with effective control of pressure and noise is safely discharged from the steam discharge pipe 3 at the bottom of the silencer cavity 404, completing the pressure relief and silencing process.

[0031] Specifically, such as Figure 4 As shown, the backwash filter assembly 5 includes a support plate 501 fixedly connected to the outside of the housing 1. A water storage tank 502 is fixedly connected to the top of the support plate 501. A connecting pipe 503 is connected to the top of the water storage tank 502. A micro pump 504 is provided on the outside of the connecting pipe 503.

[0032] Specifically, such as Figure 4 As shown, the inner side of the connecting pipe 503 is connected to the backwash nozzle 505, and the backwash nozzle 505 is fixedly connected to the silencer chamber 404.

[0033] Specifically, such as Figure 4 As shown, a filter screen 506 is fixedly connected inside the silencing cavity 404, and the filter screen 506 is located at the top of the backwash nozzle 505.

[0034] In this embodiment: During the process of steam passing through the silencing chamber 404, the solid impurities carried by the steam will be intercepted by the filter screen 506 inside the silencing chamber 404 and accumulate on the filter screen. As the usage time increases, the impurities on the filter screen gradually increase, which will block the filter screen pores and affect the steam flow and silencing effect. At this time, the backwash filter assembly 5 is started for cleaning. The micro pump 504 is turned on. The micro pump 504 provides power to pressurize and deliver the water in the water storage tank 502 to the backwash nozzle 505 through the connecting pipe 503. Then the backwash nozzle 505 sprays high-pressure water onto the top of the filter screen 506 to rinse the filter screen and remove the accumulated impurities. The impurities washed off fall into the bottom of the silencing chamber 404 with the water flow and can be discharged through the condensate drain pipe 2 to maintain its good filtration performance and ensure smooth flow and stable silencing effect inside the silencing chamber 404.

[0035] Specifically, such as Figure 5 As shown, a steam inlet pipe 6 is connected to the top of the silencing inlet 401, a control valve 7 is installed on the outside of the steam inlet pipe 6, and a flow monitor 8 is installed at the bottom of the steam inlet pipe 6.

[0036] Specifically, such as Figure 2 As shown, the bottom of the silencing cavity 404 is connected to a condensate drain pipe 2, and the right side of the bottom of the silencing cavity 404 is connected to a steam drain pipe 3.

[0037] In this embodiment: by setting up a steam inlet pipe 6, a control valve 7, and a flow monitor 8, when the pressure inside the industrial high-temperature steam transmission pipeline exceeds the safety threshold, the operator manually or through the control system opens the control valve 7 outside the steam inlet pipe 6, and the high-temperature steam flows from the steam inlet pipe 6 into the silencer inlet 401. At this time, the flow monitor 8 at the bottom of the steam inlet pipe 6 will monitor the steam flow rate in real time, so that the operator can grasp the real-time situation of steam pressure relief, judge whether the pressure relief is normal, and avoid energy loss and safety hazards caused by steam leakage. A condensate drain pipe is also included. 2 and steam discharge pipe 3: During the process of high-temperature steam passing through the silencing chamber 404 for pressure relief and noise reduction, some of the heat in the steam will be absorbed by the wall of the silencing chamber 404, causing the steam to condense and form condensate. The condensate will collect at the bottom of the silencing chamber 404. At this time, the operator can periodically or according to the system operation to open the valve of the condensate discharge pipe 2 to discharge the condensate outside the silencer. After being processed by the pressure relief and noise reduction component 4, the steam pressure and noise are effectively reduced, and finally discharged safely from the steam discharge pipe 3, achieving the purpose of pressure relief and reducing noise pollution to the surrounding environment.

[0038] Specifically, such as Figure 5 As shown, a high-temperature resistant sealing ring 9 is fitted at the bottom of the steam inlet pipe 6. The high-temperature resistant sealing ring 9 is made of silicone rubber.

[0039] Specifically, such as Figure 2 As shown, the interior of the housing 1 is provided with sound insulation cotton 10, which is located on the outside of the sound-absorbing cavity 404.

[0040] In this embodiment: By setting a high-temperature resistant sealing ring 9, when installing the steam inlet pipe 6 and the silencing inlet cavity 401, the high-temperature resistant sealing ring 9 is fitted onto the bottom of the steam inlet pipe 6. During equipment operation, the steam inlet pipe 6 is in a high-temperature steam environment, continuously preventing steam from overflowing from the connection, thus ensuring reliable sealing between the steam inlet pipe 6 and the silencing cavity 404 and preventing high-temperature steam leakage. By setting a sound insulation cotton 10, when the steam in the silencing cavity 404 depressurizes and generates noise, the noise sound waves will first pass through the sound insulation cotton 10 during the process of propagating to the outside of the shell 1. The porous structure inside the sound insulation cotton 10 will cause the sound waves to be continuously reflected and rubbed, converting sound energy into heat energy, thereby effectively absorbing and blocking noise, reducing the propagation of noise inside the silencing cavity 404 to the external environment, and ensuring that the surrounding environmental noise meets environmental protection standards.

[0041] Working Principle: In using the industrial high-temperature steam transmission pipeline pressure relief silencer, first connect the steam inlet pipe 6 to the industrial high-temperature steam transmission pipeline. When the pressure inside the industrial high-temperature steam transmission pipeline exceeds the set upper limit, the operator opens the control valve 7 on the outside of the steam inlet pipe 6. High-temperature steam enters the silencer inlet chamber 401 through the steam inlet pipe 6. At this time, the flow monitor 8 at the bottom of the steam inlet pipe 6 monitors the steam flow rate in real time. After entering the silencer inlet chamber 401, the steam first passes through the internal flow divider cone 403. The flow divider cone 403 evenly disperses the high-speed flowing steam, avoiding concentrated steam injection that generates significant noise. Simultaneously, it allows the steam to enter the subsequent silencer structure more evenly. The silencer inlet chamber 401... The outer heat insulation sleeve 402 is made of high-temperature resistant material, which can effectively block the transfer of steam heat to the outside, prevent the shell 1 from being damaged by high temperature, and ensure the safety of operators. The dispersed steam flows out from the bottom of the silencing inlet 401 and enters the silencing cavity 404 inside the shell 1. The guide plate 405 in the silencing cavity 404 is located at the bottom of the flow divider cone 403. It can guide the steam to flow evenly in the silencing cavity 404 and avoid the formation of steam turbulence and the generation of additional noise. When the steam flows in the silencing cavity 404, it will pass through the sound-absorbing honeycomb module 406. This module is made of porous material and has many tiny pores inside. When sound waves enter, friction and damping will occur in the pores, converting sound energy into heat energy. Effectively absorbing mid-to-high frequency noise, the steam, after noise reduction by the sound-absorbing honeycomb module 406, continues to flow downwards to the silencer tailpipe 407. The silencer tailpipe 407 further decelerates and reduces the noise of the steam, allowing it to exit from the steam discharge pipe 3 at the bottom of the silencer cavity 404 at a lower speed and with less noise. This achieves the main functions of pressure relief and noise reduction. During the steam flow, some steam condenses into water. The condensate discharge pipe 2 connected to the bottom of the silencer cavity 404 can promptly discharge the condensate, preventing it from accumulating inside the silencer cavity 404 and affecting the normal operation of the equipment. At the same time, to prevent impurities in the steam from clogging the silencer structure, a filter screen 506 is installed inside the silencer cavity 404 to intercept solid impurities in the steam. After the filter screen 506 has been used for a period of time, the filtration effect will be affected by the accumulation of impurities. At this time, the backwash nozzle 505 is activated. The water storage tank 502 on its support plate 501 stores cleaning water. Then, the micro pump 504 is activated. The micro pump 504 provides power to pressurize the water in the water storage tank 502 and spray it onto the top of the filter screen 506 through the backwash nozzle 505 to rinse the filter screen and remove the impurities on the filter screen. The impurities washed off fall into the bottom of the silencer chamber 404 with the water flow and can be discharged through the condensate drain pipe 2. In addition, the sound insulation cotton 10 inside the housing 1 located outside the silencer chamber 404 further absorbs and blocks noise, reduces the transmission of noise to the outside world, and makes the silencer more effective.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure relief silencer for industrial high-temperature steam transmission pipelines, comprising a housing (1), characterized in that: The top of the housing (1) is provided with a pressure relief and noise reduction assembly (4), and the inside of the housing (1) is provided with a backwash filter assembly (5); The pressure relief and silencing assembly (4) includes a silencing inlet cavity (401) fixedly connected to the top of the housing (1), a heat insulation sleeve (402) is provided on the outside of the silencing inlet cavity (401), a flow divider cone (403) is fixedly connected inside the silencing inlet cavity (401), a silencing cavity (404) is fixedly connected inside the housing (1), a flow guide plate (405) is fixedly connected inside the silencing cavity (404), the flow guide plate (405) is located at the bottom of the flow divider cone (403), a sound-absorbing honeycomb module (406) is fixedly connected inside the silencing cavity (404), and a silencing tailpipe (407) is fixedly connected to the bottom of the silencing cavity (404).

2. The pressure relief silencer for industrial high-temperature steam transmission pipelines according to claim 1, characterized in that: The backwash filter assembly (5) includes a support plate (501) fixedly connected to the outside of the housing (1). A water storage tank (502) is fixedly connected to the top of the support plate (501). A connecting pipe (503) is connected to the top of the water storage tank (502). A micro pump (504) is provided on the outside of the connecting pipe (503).

3. The pressure relief silencer for industrial high-temperature steam transmission pipelines according to claim 2, characterized in that: The inner side of the connecting pipe (503) is connected to a backwash nozzle (505), and the backwash nozzle (505) is fixedly connected to the silencing cavity (404).

4. The pressure relief silencer for industrial high-temperature steam transmission pipelines according to claim 3, characterized in that: A filter screen (506) is fixedly connected inside the silencing cavity (404), and the filter screen (506) is located on top of the backwash nozzle (505).

5. The pressure relief silencer for industrial high-temperature steam transmission pipelines according to claim 1, characterized in that: The top of the silencing inlet cavity (401) is connected to a steam inlet pipe (6), a control valve (7) is provided on the outside of the steam inlet pipe (6), and a flow monitor (8) is provided at the bottom of the steam inlet pipe (6).

6. The pressure relief silencer for industrial high-temperature steam transmission pipelines according to claim 1, characterized in that: The bottom of the silencing cavity (404) is connected to a condensate drain pipe (2), and the right side of the bottom of the silencing cavity (404) is connected to a steam drain pipe (3).

7. The pressure relief silencer for industrial high-temperature steam transmission pipelines according to claim 5, characterized in that: The bottom of the steam inlet pipe (6) is fitted with a high-temperature resistant sealing ring (9), which is made of silicone rubber.

8. The pressure relief silencer for industrial high-temperature steam transmission pipelines according to claim 1, characterized in that: The housing (1) is provided with sound insulation cotton (10) inside, and the sound insulation cotton (10) is located outside the sound-absorbing cavity (404).

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