CN109692856B - Noise reduction device and noise reduction method for steam pipeline purging - Google Patents
Noise reduction device and noise reduction method for steam pipeline purging Download PDFInfo
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- CN109692856B CN109692856B CN201910039175.6A CN201910039175A CN109692856B CN 109692856 B CN109692856 B CN 109692856B CN 201910039175 A CN201910039175 A CN 201910039175A CN 109692856 B CN109692856 B CN 109692856B
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- 230000009467 reduction Effects 0.000 title claims abstract description 180
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010926 purge Methods 0.000 title claims description 48
- 230000030279 gene silencing Effects 0.000 claims abstract description 99
- 238000007664 blowing Methods 0.000 claims abstract description 20
- 238000005057 refrigeration Methods 0.000 claims abstract description 20
- 239000002893 slag Substances 0.000 claims description 31
- 239000002699 waste material Substances 0.000 claims description 30
- 238000001816 cooling Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 29
- 230000008859 change Effects 0.000 abstract description 6
- 239000003507 refrigerant Substances 0.000 description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 239000003595 mist Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000000903 blocking effect Effects 0.000 description 9
- 230000003584 silencer Effects 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
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- 230000005494 condensation Effects 0.000 description 4
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 2
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- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
Abstract
The invention provides a noise reduction device and a noise reduction method for blowing steam pipes, which are characterized in that a noise reduction module is used for carrying out noise reduction treatment on high-temperature high-speed steam, the noise reduction module adopts a compressor, a condenser, a filter and a baffle type evaporator to form refrigeration circulation, so as to cool a noise reduction cavity, and finally, noise reduction is realized; on the other hand, the silencing baffle can block high-temperature high-pressure high-speed steam, and the silencing cavity is formed, so that sound waves are reflected at the sectional area abrupt change interface and have interference effects, and silencing is achieved.
Description
Technical Field
The invention relates to the field of environment-friendly machinery, in particular to a noise reduction device and a noise reduction method for steam pipeline blowing.
Background
There are often a large number of steam lines in thermodynamic equipment systems in the petroleum, chemical, metallurgical and electrical industries. To ensure safe operation of such industrial units, the piping and its accessories must be cleaned by high pressure steam purging as required by the design prior to completion of the electromechanical installation or maintenance of the equipment. Industrial wastes such as iron scale, welding slag and other sundries in the pipeline are thoroughly removed by using the flushing of the high-speed air flow. Particularly when the purging quality requirement is high, the purging needs to be carried out repeatedly by high-flow steam with high flow rate. The purging process tends to produce significant steam turbulence noise because during the purging process, a strong stream of steam is ejected from the nozzle, impacting and shearing the surrounding stationary air, causing severe gas turbulence near the nozzle, thereby producing aerodynamic noise as high as 160 dB (a). The method has the characteristics of high noise intensity, wide frequency spectrum, wide pollution hazard range and the like, greatly influences and interferes project site construction, test run operation and work, study and life of surrounding residents, and causes serious hazard to ecological environment and physical and mental health of individuals. Aiming at the phenomena, the steam pipeline purging, noise reduction and silencing are particularly important.
At present, three main noise reduction principles of the common noise elimination device are as follows: one is to adopt sound absorption materials, and the effects of absorbing and reducing noise of incident sound are achieved by utilizing the porosity, film effect or resonance effect of the materials; the second is to make acoustic treatment to the interior of noise source, for example connect the pipe section with abrupt change of sectional area or connect the resonant cavity by side at the pipeline exit, in order to reduce the production and propagation of noise; and the third is a low-temperature water mist silencer sprayed through small holes, and the noise reduction effect is achieved by reducing the temperature and pressure of steam at the outlet of the pipeline.
Based on the principle, a batch of noise reduction and silencing devices for steam pipeline purging are also emerging on the market and in engineering practice, and good and economic application effects are obtained in the respective fields. However, due to the diversity and complexity of engineering equipment, the noise reduction and silencing devices are difficult to meet the special requirements of all pipeline purging and have no universality. In addition, the noise reduction effect is limited, and the discharged noise index still can not meet the requirements of GB12348 noise Standard of Industrial Enterprise factory. The sound absorption materials are adopted in a large quantity, so that the cost is high, and the process is complicated; the noise reduction effect of the acoustic treatment in the structure is limited, the structure and the design of the silencer are complex, and the manufacturing process is time-consuming and has high cost; the small holes are adopted for spraying water mist to cool and reduce noise, the cooling and noise reduction effects are extremely limited, and the national standard requirements can not be met. These limit the wide range of efficient applications of the pipe purge noise reducer.
Disclosure of Invention
The invention aims to solve the technical problem of providing a noise reduction device and a noise reduction method for steam pipeline blowing, which can fully utilize the kinetic energy and heat energy of high-pressure steam for blowing and cooperate with multi-level noise reduction and noise reduction arrangement to achieve the purpose of greatly reducing blowing noise while ensuring cleaning effect. Meanwhile, the on-line monitoring and automatic control of the purging and cleaning effects of the pipeline are realized, and the purging efficiency of the steam pipeline is greatly improved.
The invention is realized in the following way: a noise reduction device for steam pipeline purging comprises a compressor, a condenser, a filter, a capillary tube and a silencing module;
the noise reduction device is provided with an air inlet and an air outlet, and the air inlet, the noise reduction cavity and the air outlet are communicated;
the compressor is arranged in the silencing cavity, and fan blades of the compressor are arranged at the air inlet;
the baffle type evaporator comprises a plurality of silencing baffles; each silencing baffle is embedded with a connecting pipe; the plurality of silencing baffles are alternately arranged in the silencing cavity at intervals and positioned at the rear of the compressor; the connecting pipes of the silencing baffles are hermetically communicated into an integral pipe, the inlet of the integral pipe is hermetically connected with one end of the capillary, the other end of the capillary is hermetically connected with the outlet of the filter, the outlet of the condenser is hermetically connected with the inlet of the filter, the outlet of the compressor is hermetically connected with the inlet of the condenser, and the outlet of the integral pipe is hermetically connected with the inlet of the compressor;
The front-stage baffle is rotatably arranged in the silencing cavity and positioned in front of the fan blades, a slag discharge air outlet is further formed in the bottom of the front-stage baffle, a detachable cover is arranged outside the slag discharge air outlet, and the slag discharge air outlet is covered by the cover;
the noise reduction device also comprises a rotating shaft, two side walls of the noise reduction device are symmetrically provided with a through hole along a radial axis, the rotating shaft passes through the two through holes, the rotating shaft is rotatably arranged in the noise reduction device through a bearing, the rotating shaft is fixedly connected to the front-stage baffle, and the axis of the rotating shaft, the radial axis of the front-stage baffle and the radial axis of the noise reduction device are parallel to each other and are positioned in the same horizontal plane;
the noise reduction device comprises a rotating shaft, and is characterized by further comprising a bolt, wherein the outer side wall of the noise reduction device is further provided with a bolt mounting seat which is positioned above the rotating shaft, the bolt mounting seat is provided with a first vertical bolt hole, the part of the rotating shaft protruding out of the noise reduction device is further provided with a second bolt hole and a third bolt hole which are perpendicular to each other, the axes of the first vertical bolt hole, the second bolt hole and the third bolt hole are positioned in the same vertical plane, and when the front-stage baffle rotates to a horizontal state, the axes of the second bolt hole and the first vertical bolt hole are overlapped, and the bolt is inserted into the first vertical bolt hole and the second bolt hole; when the front-stage baffle rotates to a vertical state, the axes of the third bolt hole and the first vertical bolt hole coincide, and the bolt is inserted into the first vertical bolt hole and the third bolt hole.
Further, the noise reduction device is a cylindrical barrel, the rotation axis of the fan blade is coincident with the horizontal axis of the noise reduction device, and the diameter of the fan blade is matched with the diameter of the section of the noise reduction cavity.
Further, one end of the rotating shaft is also provided with a handle.
Further, the air exhaust port further comprises a noise detector, wherein the noise detector is arranged on the outer side wall of the air exhaust port.
Further, the fan blade also comprises a PC, a piezoelectric film and a matched piezoelectric film sensor, wherein the piezoelectric film is coated on the surface of the fan blade, and the piezoelectric film sensor is respectively connected with the piezoelectric film and the PC in a communication way.
The invention also provides a noise reduction method for the steam pipeline purging, which needs a fan, a controller and the noise reduction device; the fan is in communication connection with the controller, and the controller is in communication connection with the PC; the noise reduction method comprises the following steps:
step S1, a critical threshold value is set on a PC in advance, wherein the critical threshold value is an electric signal fed back by a piezoelectric film material or an accumulated amount of the electric signal within a fixed duration; an air outlet of the fan is communicated with an inlet end of a pipeline to be purged, and an air outlet end of the pipeline to be purged is connected with an air inlet of the noise reduction device; rotating the front-stage baffle to a vertical state, fixing the baffle by a bolt, opening the cover, and communicating the deslagging air outlet with the outside;
Step S2, the PC sends a starting signal to the controller, the controller controls the fan to start working, and purge steam and waste in a pipeline to be purged are discharged from a slag discharge air outlet;
s3, after the purging time t is continued, the front-stage baffle is rotated to a horizontal position and fixed by a bolt, and then the cover is reset to cover the slag discharge air outlet;
s4, on one hand, blowing fan blades to rotate by the blowing steam so as to drive the compressor to work, forming refrigeration circulation through the compressor, the condenser, the filter and the baffle type evaporator, thereby cooling the silencing cavity, finally cooling and denoising high-pressure steam in the silencing cavity, and finally discharging the waste from the exhaust port after cooling and denoising by wind;
on the other hand, if the waste blown by the blowing steam impacts the piezoelectric film on the surface of the fan blade, the piezoelectric film converts the received pressure into an electric signal, the electric signal is fed back to the piezoelectric film sensor, the electric signal is fed back to the PC through the piezoelectric film sensor, when the electric signal or the accumulated amount of the electric signal is smaller than or equal to the critical threshold value, the fact that the interior of the pipeline to be blown is blown clean is indicated, at the moment, the PC sends a stop signal to the controller, and the controller controls the fan to stop working to finish the cleaning task; otherwise, the fan continues to work.
Further, the time t is 3 minutes to 5 minutes.
The invention has the following advantages: the invention provides a noise reduction device for blowing a steam pipeline, which is characterized in that a noise reduction module is used for carrying out noise reduction treatment on high-temperature high-pressure steam, so that noise is greatly reduced, the noise reduction effect is realized, a compressor, a condenser, a filter and a baffle type evaporator are adopted by the noise reduction module to form refrigeration circulation, and then a noise reduction cavity is cooled, so that noise reduction is finally realized. The invention also provides a noise reduction method for the steam pipeline purging, which can realize automatic noise reduction, greatly improve the efficiency and reduce the labor intensity.
Drawings
The invention will be further described with reference to examples of embodiments with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a noise reduction device according to the present invention.
Fig. 2 is a schematic diagram illustrating the effect of the first embodiment of the noise reduction device according to the present invention.
Fig. 3 is a schematic diagram illustrating the effect of a second embodiment of the noise reduction device according to the present invention.
Fig. 4 is a cross-sectional view A-A of fig. 1.
Fig. 5 is a sectional view of B-B in fig. 1.
Fig. 6 is a C-C cross-sectional view of fig. 1.
Fig. 7 is a partial schematic view of the direction D in fig. 1.
Fig. 8 is a partially enlarged schematic view of F in fig. 1.
Fig. 9 is a schematic structural view of a reducing connecting pipe according to the present invention.
In the figure: 1. the device comprises a compressor, 2, a condenser, 3, a filter, 4, a capillary tube, 5, a silencing module, 51, noise reduction Rong Qijian, 511, a silencing cavity, 512, an air inlet, 513, an air outlet, 514, a slag discharge air outlet, 515, a through hole, 516, a bolt mounting seat, 5161, a first vertical bolt hole, 52, a baffle type evaporator, 521, a silencing baffle, 5211, a connecting pipe, 6, an integral pipe, 7, a fan, 8, a pipeline to be purged, 9, a silencing cavity, 10, a front-stage baffle, 20, a cover, 30, a rotating shaft, 301, a handle, 302, a second bolt hole, 303, a third bolt hole, 40, a bearing, 50, a bolt, 60, a noise detector, 70, a PC, 80, a piezoelectric film, 90, a piezoelectric film sensor, 100, a controller, 200, a noise reduction device, 300, a first-stage expansion type noise reduction device, 3001, a cylindrical connecting pipe section, 400, a variable diameter connecting pipe, 4001 and a flange connecting ring.
Detailed Description
Referring to fig. 1 to 9, the present invention provides a noise reduction device for steam pipeline purging, which comprises a compressor 1, a condenser 2, a filter 3, a capillary tube 4 and a noise reduction module 5;
the noise reduction module 5 comprises a noise reduction device 51 and a baffle type evaporator 52, a noise reduction cavity 511 is arranged in the noise reduction device 51, the noise reduction device 51 is also provided with an air inlet 512 and an air outlet 513, and the air inlet 512, the noise reduction cavity 511 and the air outlet 513 are communicated;
the compressor 1 is installed in the silencing chamber 511, and the blades 11 of the compressor 1 are arranged at the air inlet 512;
the baffle-type evaporator 52 includes a plurality of silencing baffles 521, which can be used as an evaporator to form a refrigeration cycle to cool the high-temperature high-pressure high-speed steam, thereby realizing noise reduction, and meanwhile, the silencing baffles 521 can block the high-temperature high-pressure high-speed steam, and the energy of the high-pressure steam is further attenuated, thereby realizing noise reduction; each silencing baffle 521 is embedded with a connecting pipe 5211; the plurality of silencing baffles 521 are alternately arranged in the silencing cavity 511 at intervals to form a silencing cavity 9, and the sectional area of the internal structure is suddenly changed to weaken the generation and propagation of noise, so that the reflection and interference of sound waves with certain frequencies occur at the interface with suddenly changed acoustic impedance, and silencing is realized. In one embodiment, the plurality of silencing baffles 521 are alternately arranged at intervals in the following manner: one silencing baffle 521 is arranged at the bottom center position of the silencing cavity 511, then the other silencing baffle 521 is arranged at the top center position of the silencing cavity 511 at intervals and is arranged in an up-down opposite mode, then the third silencing baffle 521 is arranged at the left end center position of the silencing cavity 511, the fourth silencing baffle 521 is arranged at the right end center position of the silencing cavity 511 and is opposite left and right, the fifth silencing baffle 521 is arranged at the bottom center position of the silencing cavity 511, and the four silencing baffles are reciprocally circulated, wherein the up-down positions are not sequentially arranged, the order can be changed, the left-right positions are not sequentially arranged, the up-down positions and the left-right positions are not sequentially arranged, and the silencing baffles 521 are parallel to each other; and is located at the rear of the compressor 1; the connecting pipes 5211 of the silencing baffles 521 are hermetically connected to form a whole pipe 6, the inlet of the whole pipe 6 is hermetically connected to one end of the capillary tube 4, the other end of the capillary tube 4 is hermetically connected to the outlet of the filter 3, the outlet of the condenser 2 is hermetically connected to the inlet of the filter 3, the outlet of the compressor 1 is hermetically connected to the inlet of the condenser 2, the outlet of the whole pipe 6 is hermetically connected to the inlet of the compressor 1, thereby forming a refrigeration cycle, refrigerant is sucked and compressed from the compressor 1, enters the condenser 2 for condensation, then enters the filter 3 for filtration, then enters the capillary tube 4 for throttling and depressurizing, then enters the baffle type evaporator 52 for cooling the silencing cavity 511, and finally returns to the compressor 1.
Example 1
In operation, the air outlet of the fan 7 is communicated with the inlet end of the pipeline 8 to be purged, and the air outlet end of the pipeline 8 to be purged is connected with the air inlet 512 through the reducing connecting pipe 400; the fan 7 blows high-temperature high-pressure high-speed steam to sweep the pipeline, the high-temperature high-pressure high-speed steam after sweeping pushes the fan blade 11 to rotate for acting first time so as to play a role in noise reduction, in a specific implementation, the fan blade 11 can adopt turbine fan blades, the fan blade 11 further drives the compressor 1 to move, the compressor 1 sucks and compresses the refrigerant to become high-temperature high-pressure gaseous refrigerant, and then the compressor 1 conveys the gaseous refrigerant into the condenser 2; the condenser 2 condenses and releases heat from the gaseous refrigerant, the high-temperature and high-pressure vapor refrigerant is changed into low-temperature and high-pressure liquid refrigerant, the refrigerant enters the filter 3 after condensation to filter out impurities, then enters the capillary tube 4, the pressure of the refrigerant is reduced by throttling and decompressing the capillary tube 4, finally enters the integral tube 6 of the baffle-type evaporator 52, the diameter of a connecting tube in the baffle-type evaporator 52 is much wider than that of the capillary tube 4, the low-temperature and low-pressure liquid refrigerant enters the baffle-type evaporator 52 and then is quickly absorbed and evaporated, finally is changed into isothermal and isobaric gaseous refrigerant, and then the gaseous refrigerant is sucked and compressed by the compressor again to continue the refrigeration cycle. Along with the evaporation and heat absorption of the refrigerant in the baffle evaporator 52 in the silencing cavity 511, the temperature in the silencing cavity 511 is reduced, and finally the refrigeration effect is realized, so that the cooling and noise reduction functions are realized, and the second noise reduction effect is realized. On the other hand, after the fan blades 11 are driven by the high-temperature high-pressure high-speed steam, kinetic energy is reduced, speed and pressure are reduced, the fan blades continue to blow to the plurality of silencing baffles 521, the silencing baffles 521 are used for physical blocking, the speed is further reduced, the third noise reduction function is achieved, a silencing cavity 9 is formed between the adjacent silencing baffles 521, abrupt change of sectional area of an internal structure is formed, noise generation and propagation are further weakened, sound waves with certain frequencies are reflected and interfered at the interface with abrupt change of acoustic impedance, the fourth noise reduction function is achieved, and finally the temperature, pressure and speed of the high-temperature high-speed steam are greatly reduced by combining the cooling noise reduction function of a refrigerating system.
In addition, due to the effect of the refrigeration cycle system, the steam pressure in the silencing cavity 511 is greatly reduced, the pressure difference ratio of the air inlet 512 and the steam in the silencing cavity 511 is correspondingly increased, the momentum ratio is increased, the purging effect is obviously improved, and the purging time is correspondingly shortened. The shortening of the purging time is beneficial to saving energy and labor investment.
Compared with the small-hole injection low-temperature water mist silencer in the prior art, the structure for reducing the temperature and the pressure of steam at the outlet of the pipeline is better in noise reduction effect, does not waste water resources, is lower in cost, and achieves recycling of kinetic energy of high-temperature high-pressure high-speed steam, and is energy-saving and environment-friendly. Because the small-hole spraying low-temperature water mist type silencer is formed by spraying water drops or water mist, firstly, the cooling effect is only normal temperature, the cooling water mist is easily carried out of the device by high-speed steam, so that the refrigeration of the invention cannot be achieved, secondly, the water drops or the water mist is required to waste water resources, and after being sprayed out, the water drops or the water mist are discharged from the exhaust port together with the steam, cannot be recycled, and the sprayed water is polluted everywhere by waste in the steam, and becomes sewage, so that the environment is further polluted.
The noise reduction device 51 is a cylindrical cylinder, the rotation axis of the fan blade 11 coincides with the horizontal axis of the noise reduction device 51, the diameter of the fan blade 11 is matched with the diameter of the section of the noise reduction cavity 511, so that the kinetic energy of high-temperature high-pressure high-speed steam can be utilized to the greatest extent, the energy recovery and the reutilization are realized, the energy conservation and the emission reduction are realized, and the cost is reduced.
The novel noise reduction device is characterized by further comprising a front-stage baffle 10, wherein the shape of the front-stage baffle 10 is matched with the cross-section shape of the noise reduction cavity 511, the front-stage baffle 10 is rotatably arranged in the noise reduction cavity 511 and positioned in front of the fan blades 11, a slag discharge air outlet 514 is further formed in the front bottom of the front-stage baffle 10 by the noise reduction device 51, a detachable cover 20 is arranged outside the slag discharge air outlet 514, and the cover 20 covers the slag discharge air outlet 514. The cover 20 may be mounted on the outer side wall of the noise reduction device 51 through a hinge, during use, the front baffle 10 may be rotated to a vertical state for first blocking the rear noise reduction cavity 511 for a few minutes, for example, 3 to 5 minutes, and the cover 20 may be opened, so that the first high-temperature high-pressure high-speed steam and waste are discharged from the slag discharge outlet 514 first, in actual use, a waste collecting device may be further disposed at the slag discharge outlet 514 to prevent the waste from splashing everywhere, so that the amount of waste entering the noise reduction cavity 511 behind the front baffle 10 may be reduced, and the service life of the fan blade 11 and other parts may be prolonged, because a large amount of waste may be generated when the pipeline is just started to be purged, the kinetic energy is very large under the driving of the high-temperature high-speed steam, the impact force is large, so that most of the waste is discharged from the slag discharge outlet 514 first, the amount of the waste is reduced, then the front baffle 10 is rotated to a horizontal position and fixed, and then the high-temperature high-speed noise reduction high-speed steam is reduced by the module 5. Because the invention is used for noise reduction and noise reduction, and the final gas and waste are discharged through the exhaust port 513 or the slag discharge air outlet 514, the effect of blocking high-temperature high-pressure steam after the front-stage baffle 10 rotates does not need air tightness, and during manufacturing, clearance fit can be adopted, thereby being convenient to manufacture and install.
The noise reduction device further comprises a rotating shaft 30, two side walls of the noise reduction device 51 are symmetrically provided with through holes 515 along a radial axis, the rotating shaft 30 penetrates through the two through holes 515, the rotating shaft 30 is rotatably arranged in the noise reduction device 51 through a bearing 40, the rotating shaft 30 is fixedly connected to the front-stage baffle 10, and the axis of the rotating shaft 30, the radial axis of the front-stage baffle 10 and the radial axis of the noise reduction device 51 are parallel to each other and located in the same horizontal plane.
One end of the rotating shaft 30 is further provided with a handle 301, which is convenient for rotation operation.
The noise reduction device further comprises a bolt 50, the outer side wall of the noise reduction device 51 is further provided with a bolt mounting seat 516 which is positioned above the rotating shaft 30, the bolt mounting seat is provided with a first vertical bolt hole 5161, the part of the rotating shaft 30 protruding out of the noise reduction device is further provided with a second bolt hole 302 and a third bolt hole 303 which are vertical to each other, the axes of the first vertical bolt hole 5161, the second bolt hole 302 and the third bolt hole 303 are positioned in the same vertical plane, and when the front-stage baffle 10 rotates to a horizontal state, the axes of the second bolt hole 302 and the first vertical bolt hole 5161 are overlapped, and the bolt 50 is inserted into the first vertical bolt hole 5161 and the second bolt hole 302; when the front baffle 10 rotates to the vertical state, the axes of the third pin hole 303 and the first vertical pin hole 5161 coincide, and the pin 50 is inserted into the first vertical pin hole 5161 and the third pin hole 303.
And a noise detector 60, the noise detector 60 being installed at an outer sidewall of the air outlet 513. The noise detector 60 is an existing device, and can be purchased directly in the market, and the noise of the gas exhausted from the exhaust port 513 can be detected and displayed by the noise detector 60, so that a worker can monitor the noise conveniently, and whether the noise detector is damaged or not can be reversely proved, for example, when the noise exceeds the national standard range, the noise detector is proved to be damaged by parts, and the noise detector can be maintained in time.
Still include reducing connecting pipe 400, flange joint ring 4001 is adopted at reducing connecting pipe 400 both ends, the flange joint ring at both ends correspond fixed connection respectively in the air inlet 512 of making an uproar holds device 51 and the exit end of waiting to sweep pipeline 8, pass through canvas fixed connection between the flange joint ring 4001 at both ends, the flange joint ring at both ends can adopt current metal flange on the market or on-the-spot preparation. The connection requirement of the purging pipeline 8 with different pipe diameters can be met through the reducing connecting pipe 400, the manufacturing is simple, the cost is low, the site manufacturing can be realized, the installation is convenient, the actual requirements of different engineering project equipment can be greatly met, and the universality and the application range are greatly improved. The fan blade also comprises a PC 70, a piezoelectric film 80 and a matched piezoelectric film sensor 90, wherein the piezoelectric film 80 is coated on the surface of the fan blade 11, and the piezoelectric film sensor 90 is respectively connected with the piezoelectric film 80 and the PC 70 in a communication way. In an embodiment, the fan 7 for blowing high-temperature, high-pressure and high-speed steam is communicatively connected to a controller 100, and the controller 100 is communicatively connected to the PC 70. In use, a critical threshold value is set on the PC 70 in advance, where the critical threshold value is an electric signal or an accumulated amount of electric signals fed back by the piezoelectric film 80 in a fixed period of time; if the high-temperature high-pressure high-speed steam blown waste impacts the piezoelectric film 80 on the surface of the fan blade 11, the piezoelectric film 80 converts the received pressure into an electric signal, the electric signal is fed back to the piezoelectric film sensor 90, the electric signal is fed back to the PC 70 through the piezoelectric film sensor 90, when the electric signal or the accumulated amount of the electric signal is smaller than or equal to the critical threshold value, the fact that the interior of the pipeline 8 to be purged is completely purged is indicated, at the moment, the PC 70 sends a stop signal to the controller 100, and the controller 100 controls the fan 7 to stop working to finish the purging task; otherwise, the fan 7 continues to operate. Thereby realizing the function of automatic purging, reducing the labor capacity of staff and improving the working efficiency.
In a specific embodiment, the PC 70 is a computer, which is an existing device, and is convenient to take out, and can be purchased directly from the market, and the model of the controller 100 is as follows: the DFL-HJ02-1R5-S1 can be used as the compressor 1 of an air conditioner, only the fan blades of the compressor 1 are arranged outside the compressor, and the size of the fan blades is matched with the section of the silencing cavity.
The invention also provides a noise reduction method for the steam pipeline purging, which needs to use the fan 7, the controller 100 and the noise reduction device 200; the fan 7 is in communication connection with the controller 100, and the controller is in communication connection with the PC 70; the noise reduction method comprises the following steps:
step S1, a critical threshold value is set on the PC 70 in advance, wherein the critical threshold value is the electric signal fed back by the piezoelectric film 80 material or the accumulated amount of the electric signal within a fixed time period; the air outlet of the fan 7 is communicated with the inlet end of the pipeline 8 to be purged, and the air outlet end of the pipeline 8 to be purged is connected with the air inlet of the noise reduction container 51; the front baffle 10 is rotated to be in a vertical state, fixed by a bolt 50, the cover 20 is opened, and the slag discharge air outlet 514 is communicated with the outside;
step S2, the PC 70 sends a starting signal to the controller 100, the controller 100 controls the fan 7 to start working, and the purging steam and the waste in the pipeline 8 to be purged are discharged from the slag discharge air outlet 514;
Step S3, after the purging time t is continued, the front-stage baffle plate 10 is rotated to a horizontal position and fixed by a bolt 50, and then the cover 20 is reset to cover the slag discharge air outlet 514; most of waste is discharged from the slag discharge air outlet 514 at the time t before the purging operation starts, so that the quantity of the waste blown to the rear is reduced, the number of times of impacting the fan blades is reduced, and the service life of the fan blades 11 is prolonged to a certain extent; in a specific embodiment, the time t is 3 minutes to 5 minutes;
step S4, on the one hand, the blowing steam blows the fan blades 11 to rotate, so as to drive the compressor 1 to work, and a refrigeration cycle is formed through the compressor 1, the condenser 2, the filter 3 and the baffle type evaporator 52, so that the silencing cavity 511 is cooled, and finally, the high-pressure steam in the silencing cavity 511 is cooled and noise reduced, and the blowing steam is cooled and noise reduced and waste is discharged from the exhaust port;
on the other hand, if the waste blown by the blowing steam hits the piezoelectric film 80 on the surface of the fan blade 11, the piezoelectric film 80 converts the received pressure into an electric signal, the electric signal is fed back to the piezoelectric film sensor 90, the electric signal is fed back to the PC 70 through the piezoelectric film sensor 90, when the electric signal or the accumulated amount of the electric signal is smaller than or equal to the critical threshold value, the fact that the interior of the pipeline 8 to be blown is blown clean is indicated, at the moment, the PC 70 sends a stop signal to the controller 100, and the controller 100 controls the fan 7 to stop working to finish the cleaning task; otherwise, the fan 7 continues to operate.
The noise reduction method and the noise reduction device 200 of the invention can realize recycling of the kinetic energy of high-temperature high-pressure high-speed steam, convert the kinetic energy into the mechanical energy of the compressor 1, further drive the compressor 1 to work, save energy, and perform the first physical blocking noise reduction through the fan blade 11, perform the second physical blocking noise reduction through the plurality of noise reduction baffles 521, further form the noise reduction cavity 9 through the adjacent noise reduction baffles 521, further form the sectional area mutation of the internal structure, further reduce the generation and the propagation of the noise, and enable the reflection and the interference of sound waves with certain frequency to occur at the interface with the mutation of acoustic impedance, thereby realizing the third noise reduction, and finally performing the cooling of the noise reduction cavity 511 through the refrigeration cycle formed by the compressor 1, the condenser 2 and the baffle type evaporator 52, further performing the cooling of the high-temperature steam, and realizing the fourth noise reduction function.
Example two
The utility model provides a noise reduction device that steam line sweeps, includes compressor 1, condenser 2, filter 3, capillary 4, first stage expansion noise reduction device 300 and amortization module 5;
the noise reduction module 5 comprises a noise reduction device 51 and a baffle type evaporator 52, a noise reduction cavity 511 is arranged in the noise reduction device 51, the noise reduction device 51 is also provided with an air inlet 512 and an air outlet 513, and the air inlet 512, the noise reduction cavity 511 and the air outlet 513 are communicated;
The compressor 1 is installed in the silencing chamber 511, and the blades 11 of the compressor 1 are arranged at the air inlet 512;
the baffle-type evaporator 52 includes a plurality of silencing baffles 521, which can be used as an evaporator to form a refrigeration cycle to cool the high-temperature high-pressure high-speed steam, thereby realizing noise reduction, and meanwhile, the silencing baffles 521 can block the high-temperature high-pressure high-speed steam, and the energy of the high-pressure steam is further attenuated, thereby realizing noise reduction; each silencing baffle 521 is embedded with a connecting pipe 5211; the plurality of silencing baffles 521 are alternately arranged in the silencing cavity 511 at intervals to form a silencing cavity 9, and the sectional area of the internal structure is suddenly changed to weaken the generation and propagation of noise, so that the reflection and interference of sound waves with certain frequencies occur at the interface with suddenly changed acoustic impedance, and silencing is realized. In one embodiment, the plurality of silencing baffles 521 are alternately arranged at intervals in the following manner: one silencing baffle 521 is arranged at the bottom center position of the silencing cavity 511, then the other silencing baffle 521 is arranged at the top center position of the silencing cavity 511 at intervals and is arranged in an up-down opposite mode, then the third silencing baffle 521 is arranged at the left end center position of the silencing cavity 511, the fourth silencing baffle 521 is arranged at the right end center position of the silencing cavity 511 and is opposite left and right, the fifth silencing baffle 521 is arranged at the bottom center position of the silencing cavity 511, and the four silencing baffles are reciprocally circulated, wherein the up-down positions are not sequentially arranged, the order can be changed, the left-right positions are not sequentially arranged, the up-down positions and the left-right positions are not sequentially arranged, and the silencing baffles 521 are parallel to each other; and is located at the rear of the compressor 1; the connecting pipes 5211 of the silencing baffles 521 are hermetically connected to form a whole pipe 6, the inlet of the whole pipe 6 is hermetically connected to one end of the capillary tube 4, the other end of the capillary tube 4 is hermetically connected to the outlet of the filter 3, the outlet of the condenser 2 is hermetically connected to the inlet of the filter 3, the outlet of the compressor 1 is hermetically connected to the inlet of the condenser 2, the outlet of the whole pipe 6 is hermetically connected to the inlet of the compressor 1, thereby forming a refrigeration cycle, refrigerant is sucked and compressed from the compressor 1, enters the condenser 2 for condensation, then enters the filter 3 for filtration, then enters the capillary tube 4 for throttling and depressurizing, then enters the baffle type evaporator 52 for cooling the silencing cavity 511, and finally returns to the compressor 1.
The air outlet of the first stage expansion noise reducer 300 communicates with the air inlet 512.
When the device works, the air outlet of the fan 7 is communicated with the inlet end of the pipeline 8 to be purged, and the air outlet end of the pipeline 8 to be purged is connected with the inlet end of the first-stage expansion type noise reduction device 300 through the reducing connecting pipe 400; the fan 7 blows high-temperature high-pressure high-speed steam to purge the pipeline, the high-temperature high-pressure high-speed steam after purging enters the first-stage expansion type noise reduction device 300 to perform first-stage expansion type noise reduction, then the fan blades 11 are pushed to rotate to do work so as to perform second-stage first noise reduction, in specific implementation, the fan blades 11 can adopt turbine fan blades, the fan blades 11 further drive the compressor 1 to move, the compressor 1 sucks and compresses the refrigerant to become high-temperature high-pressure gaseous refrigerant, and then the compressor 1 conveys the gaseous refrigerant into the condenser 2; the condenser 2 condenses and releases heat from the gaseous refrigerant, the high-temperature and high-pressure vapor refrigerant is changed into low-temperature and high-pressure liquid refrigerant, the refrigerant enters the filter 3 after condensation to filter out impurities, then enters the capillary tube 4, the pressure of the refrigerant is reduced by throttling and decompressing the capillary tube 4, finally enters the integral tube 6 of the baffle-type evaporator 52, the diameter of a connecting tube in the baffle-type evaporator 52 is much wider than that of the capillary tube 4, the low-temperature and low-pressure liquid refrigerant enters the baffle-type evaporator 52 and then is quickly absorbed and evaporated, finally is changed into isothermal and isobaric gaseous refrigerant, and then the gaseous refrigerant is sucked and compressed by the compressor again to continue the refrigeration cycle. Along with the evaporation and heat absorption of the refrigerant in the baffle evaporator 52 in the silencing cavity 511, the temperature in the silencing cavity 511 is reduced, and finally the refrigeration effect is realized, so that the cooling and noise reduction functions are realized, and the second-stage noise reduction effect is realized. On the other hand, after the high-temperature high-pressure high-speed steam drives the fan blades 11 to rotate, kinetic energy is reduced, speed and pressure are reduced, then the fan blades continue to blow to a plurality of silencing baffles 521, the silencing baffles 521 are used for physical blocking, the speed is further reduced, the effect of reducing noise for the second stage and the third time is achieved, a silencing cavity 9 is formed between the adjacent silencing baffles 521, abrupt change of sectional area of an internal structure is formed, noise generation and propagation are further weakened, sound waves with certain frequencies are reflected and interfered at the interface with abrupt change of acoustic impedance, the second stage and the fourth noise reduction function is achieved, and finally the temperature, the pressure and the speed of the high-temperature high-speed steam are greatly reduced by combining the cooling and noise reduction functions of a refrigerating system.
In addition, due to the effect of the refrigeration cycle system, the steam pressure in the silencing cavity 511 is greatly reduced, the pressure difference ratio of the first-stage expansion type noise reduction device 300 and the steam in the silencing cavity 511 is correspondingly increased, the momentum ratio is increased, the purging effect is obviously improved, and the purging time is correspondingly shortened. The shortening of the purging time is beneficial to saving energy and labor investment.
Compared with the small-hole injection low-temperature water mist silencer in the prior art, the structure for reducing the temperature and the pressure of steam at the outlet of the pipeline is better in noise reduction effect, does not waste water resources, is lower in cost, and achieves recycling of kinetic energy of high-temperature high-pressure high-speed steam, and is energy-saving and environment-friendly. Because the small-hole spraying low-temperature water mist type silencer is formed by spraying water drops or water mist, firstly, the cooling effect is only normal temperature, the cooling water mist is easily carried out of the device by high-speed steam, so that the refrigeration of the invention cannot be achieved, secondly, the water drops or the water mist is required to waste water resources, and after being sprayed out, the water drops or the water mist are discharged from the exhaust port together with the steam, cannot be recycled, and the sprayed water is polluted everywhere by waste in the steam, and becomes sewage, so that the environment is further polluted.
The noise reduction device 51 is a cylindrical cylinder, the rotation axis of the fan blade 11 coincides with the horizontal axis of the noise reduction device 51, the diameter of the fan blade 11 is matched with the diameter of the section of the noise reduction cavity 511, so that the kinetic energy of high-temperature high-pressure high-speed steam can be utilized to the greatest extent, the energy recovery and the reutilization are realized, the energy conservation and the emission reduction are realized, and the cost is reduced.
The novel noise reduction device is characterized by further comprising a front-stage baffle 10, wherein the shape of the front-stage baffle 10 is matched with the cross-section shape of the noise reduction cavity 511, the front-stage baffle 10 is rotatably arranged in the noise reduction cavity 511 and positioned in front of the fan blades 11, a slag discharge air outlet 514 is further formed in the front bottom of the front-stage baffle 10 by the noise reduction device 51, a detachable cover 20 is arranged outside the slag discharge air outlet 514, and the cover 20 covers the slag discharge air outlet 514. During the use, can be in the first few minutes of blowing, for example 3 to 5 minutes through rotating preceding baffle 10 to vertical state will the amortization chamber 511 at rear first block, and will the lid 20 is opened, thereby make first high temperature high pressure high-speed steam and discarded object follow the sediment air outlet 514 is discharged earlier, during actual use, still can set up waste collection device in sediment air outlet 514 department, prevent the discarded object to splash everywhere, can reduce the quantity that the discarded object got into the amortization chamber 511 at preceding baffle 10 rear, can prolong the life of parts such as flabellum 11, because just begin to blow the pipeline, can produce a large amount of discarded object, kinetic energy is very big under high temperature high pressure high-speed steam drive, the impact force is big, consequently will most discarded object follow earlier sediment air outlet 514 reduces the quantity of discarded object, then will preceding baffle 10 is rotated to the horizontal position and is fixed again, then falls the high temperature high-speed steam through amortization module 5 falls the temperature and falls down and makes an uproar. Because the invention is used for noise reduction and noise reduction, and the final gas and waste are discharged through the exhaust port 513 or the slag discharge air outlet 514, the effect of blocking high-temperature high-pressure steam after the front-stage baffle 10 rotates does not need air tightness, and during manufacturing, clearance fit can be adopted, thereby being convenient to manufacture and install.
The noise reduction device further comprises a rotating shaft 30, two side walls of the noise reduction device 51 are symmetrically provided with through holes 515 along a radial axis, the rotating shaft 30 penetrates through the two through holes 515, the rotating shaft 30 is rotatably arranged in the noise reduction device 51 through a bearing 40, the rotating shaft 30 is fixedly connected to the front-stage baffle 10, and the axis of the rotating shaft 30, the radial axis of the front-stage baffle 10 and the radial axis of the noise reduction device 51 are parallel to each other and located in the same horizontal plane.
One end of the rotating shaft 30 is further provided with a handle 301, which is convenient for rotation operation.
The noise reduction device further comprises a bolt 50, the outer side wall of the noise reduction device 51 is further provided with a bolt mounting seat 516 which is positioned above the rotating shaft 30, the bolt mounting seat is provided with a first vertical bolt hole 5161, the part of the rotating shaft 30 protruding out of the noise reduction device is further provided with a second bolt hole 302 and a third bolt hole 303 which are vertical to each other, the axes of the first vertical bolt hole 5161, the second bolt hole 302 and the third bolt hole 303 are positioned in the same vertical plane, and when the front-stage baffle 10 rotates to a horizontal state, the axes of the second bolt hole 302 and the first vertical bolt hole 5161 are overlapped, and the bolt 50 is inserted into the first vertical bolt hole 5161 and the second bolt hole 302; when the front baffle 10 rotates to the vertical state, the axes of the third pin hole 303 and the first vertical pin hole 5161 coincide, and the pin 50 is inserted into the first vertical pin hole 5161 and the third pin hole 303.
And a noise detector 60, the noise detector 60 being installed at an outer sidewall of the air outlet 513. The noise detector 60 is an existing device, and can be purchased directly in the market, and the noise of the gas exhausted from the exhaust port 513 can be detected and displayed by the noise detector 60, so that a worker can monitor the noise conveniently, and whether the noise detector is damaged or not can be reversely proved, for example, when the noise exceeds the national standard range, the noise detector is proved to be damaged by parts, and the noise detector can be maintained in time.
The air inlet of the first stage expansion type noise reduction device 300 is further provided with a cylindrical connecting pipe section 3001, so that the butt joint can be conveniently performed.
Still include reducing connecting pipe 400, flange joint ring 4001 is adopted at reducing connecting pipe 400 both ends, the flange joint ring at both ends correspond fixed connection respectively in cylinder joint pipe section 3001 and the exit end of waiting to sweep pipeline 8, pass through canvas fixed connection between the flange joint ring 4001 at both ends, the flange joint ring at both ends can adopt current metal flange on the market or on-the-spot preparation. The connection requirement of the purging pipeline 8 with different pipe diameters can be met through the reducing connecting pipe 400, the manufacturing is simple, the cost is low, the site manufacturing can be realized, the installation is convenient, the actual requirements of different engineering project equipment can be greatly met, and the universality and the application range are greatly improved.
The fan blade also comprises a PC 70, a piezoelectric film 80 and a matched piezoelectric film sensor 90, wherein the piezoelectric film 80 is coated on the surface of the fan blade 11, and the piezoelectric film sensor 90 is respectively connected with the piezoelectric film 80 and the PC 70 in a communication way. In an embodiment, the fan 7 for blowing high-temperature, high-pressure and high-speed steam is communicatively connected to a controller 100, and the controller 100 is communicatively connected to the PC 70. In use, a critical threshold value is set on the PC 70 in advance, where the critical threshold value is an electric signal fed back by the piezoelectric film 80 or an accumulated amount of the electric signal in a fixed period of time; if the high-temperature high-pressure high-speed steam blown waste impacts the piezoelectric film 80 on the surface of the fan blade 11, the piezoelectric film 80 converts the received pressure into an electric signal, the electric signal is fed back to the piezoelectric film sensor 90, the electric signal is fed back to the PC 70 through the piezoelectric film sensor 90, when the electric signal or the accumulated amount of the electric signal is smaller than or equal to the critical threshold value, the fact that the interior of the pipeline 8 to be purged is completely purged is indicated, at the moment, the PC 70 sends a stop signal to the controller 100, and the controller 100 controls the fan 7 to stop working to finish the purging task; otherwise, the fan 7 continues to operate. Thereby realizing the function of automatic purging, reducing the labor capacity of staff and improving the working efficiency.
In a specific embodiment, the PC 70 is a computer, which is an existing device, and is convenient to take out, and can be purchased directly from the market, and the model of the controller 100 is as follows: the DFL-HJ02-1R5-S1 can be used as the compressor 1 of an air conditioner, only the fan blades of the compressor 1 are arranged outside the compressor, and the size of the fan blades is matched with the section of the silencing cavity.
The noise reduction method needs to use a fan 7, a controller 100 and the noise reduction device 200; the fan 7 is in communication connection with the controller 100, and the controller is in communication connection with the PC 70; the noise reduction method comprises the following steps:
step S1, a critical threshold value is set on the PC 70 in advance, wherein the critical threshold value is an electric signal fed back by the piezoelectric film 80 material or the accumulated amount of the electric signal in a fixed time period; the air outlet of the fan 7 is communicated with the inlet end of the pipeline 8 to be purged, the air outlet end of the pipeline 8 to be purged is connected with a flange connection ring 4001, the other flange connection ring 4001 is connected with the inlet of the first-stage expansion type noise reduction device 300, and the outlet of the first-stage expansion type noise reduction device 300 is connected with the air inlet 512; the front baffle 10 is rotated to be in a vertical state, fixed by a bolt 50, the cover 20 is opened, and the slag discharge air outlet 514 is communicated with the outside;
Step S2, the PC 70 sends a starting signal to the controller 100, the controller 100 controls the fan 7 to start working, and the purging steam and the waste in the pipeline 8 to be purged are discharged from the slag discharge air outlet 514;
step S3, after the purging time t is continued, the front-stage baffle plate 10 is rotated to a horizontal position and fixed by a bolt 50, and then the cover 20 is reset to cover the slag discharge air outlet 514; most of waste is discharged from the slag discharge air outlet 514 at the time t before the purging operation starts, so that the quantity of the waste blown to the rear is reduced, the number of times of impacting the fan blades is reduced, and the service life of the fan blades 11 is prolonged to a certain extent; in a specific embodiment, the time t is 3 minutes to 5 minutes;
step S4, on the one hand, the blowing steam blows the fan blades 11 to rotate, so as to drive the compressor 1 to work, and a refrigeration cycle is formed through the compressor 1, the condenser 2, the filter 3 and the baffle type evaporator 52, so that the silencing cavity 511 is cooled, and finally, the high-pressure steam in the silencing cavity 511 is cooled and noise reduced, and the blowing steam is cooled and noise reduced and waste is discharged from the exhaust port;
on the other hand, if the waste blown by the blowing steam hits the piezoelectric film 80 on the surface of the fan blade 11, the piezoelectric film 80 converts the received pressure into an electric signal, the electric signal is fed back to the piezoelectric film sensor 90, the electric signal is fed back to the PC 70 through the piezoelectric film sensor 90, when the electric signal or the accumulated amount of the electric signal is smaller than or equal to the critical threshold value, the fact that the interior of the pipeline 8 to be blown is blown clean is indicated, at the moment, the PC 70 sends a stop signal to the controller 100, and the controller 100 controls the fan 7 to stop working to finish the cleaning task; otherwise, the fan 7 continues to operate.
The first-stage expansion type noise reduction device 300 is used for carrying out first-stage expansion type noise reduction and silencing, then the first-stage expansion type noise reduction device enters the noise reduction module 5, the kinetic energy of high-temperature high-pressure high-speed steam can be recycled and converted into mechanical energy of the compressor 1, the compressor 1 is driven to work, energy is saved, the fan blades 11 are used for carrying out second-stage first-time physical blocking and noise reduction, the second-stage second-time physical blocking and noise reduction is carried out through the plurality of noise reduction baffles 521, the noise reduction cavity 9 is formed between the adjacent noise reduction baffles 521, the sectional area mutation of an internal structure is formed, the generation and the propagation of noise are further reduced, the phenomenon of reflection and interference of sound waves with certain frequency at the interface with abrupt acoustic impedance is realized, the second-stage third noise reduction is realized, and finally the noise reduction cavity 511 is cooled through the refrigeration cycle formed by the compressor 1, the condenser 2 and the baffle type evaporator 52, and the second-stage fourth noise reduction function is realized.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the invention, and that equivalent modifications and variations of the invention in light of the spirit of the invention will be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a device of making an uproar falls in steam conduit sweeps which characterized in that: comprises a compressor, a condenser, a filter, a capillary tube and a silencing module;
the noise reduction device is provided with an air inlet and an air outlet, and the air inlet, the noise reduction cavity and the air outlet are communicated;
the compressor is arranged in the silencing cavity, and fan blades of the compressor are arranged at the air inlet;
the baffle type evaporator comprises a plurality of silencing baffles; each silencing baffle is embedded with a connecting pipe; the plurality of silencing baffles are alternately arranged in the silencing cavity at intervals and positioned at the rear of the compressor; the connecting pipes of the silencing baffles are hermetically communicated into an integral pipe, the inlet of the integral pipe is hermetically connected with one end of the capillary, the other end of the capillary is hermetically connected with the outlet of the filter, the outlet of the condenser is hermetically connected with the inlet of the filter, the outlet of the compressor is hermetically connected with the inlet of the condenser, and the outlet of the integral pipe is hermetically connected with the inlet of the compressor;
The front-stage baffle is rotatably arranged in the silencing cavity and positioned in front of the fan blades, a slag discharge air outlet is further formed in the bottom of the front-stage baffle, a detachable cover is arranged outside the slag discharge air outlet, and the slag discharge air outlet is covered by the cover;
the noise reduction device also comprises a rotating shaft, two side walls of the noise reduction device are symmetrically provided with a through hole along a radial axis, the rotating shaft passes through the two through holes, the rotating shaft is rotatably arranged in the noise reduction device through a bearing, the rotating shaft is fixedly connected to the front-stage baffle, and the axis of the rotating shaft, the radial axis of the front-stage baffle and the radial axis of the noise reduction device are parallel to each other and are positioned in the same horizontal plane;
the noise reduction device comprises a rotating shaft, and is characterized by further comprising a bolt, wherein the outer side wall of the noise reduction device is further provided with a bolt mounting seat which is positioned above the rotating shaft, the bolt mounting seat is provided with a first vertical bolt hole, the part of the rotating shaft protruding out of the noise reduction device is further provided with a second bolt hole and a third bolt hole which are perpendicular to each other, the axes of the first vertical bolt hole, the second bolt hole and the third bolt hole are positioned in the same vertical plane, and when the front-stage baffle rotates to a horizontal state, the axes of the second bolt hole and the first vertical bolt hole are overlapped, and the bolt is inserted into the first vertical bolt hole and the second bolt hole; when the front-stage baffle rotates to a vertical state, the axes of the third bolt hole and the first vertical bolt hole coincide, and the bolt is inserted into the first vertical bolt hole and the third bolt hole;
One end of the rotating shaft is also provided with a handle.
2. A steam pipe purge noise reducer as defined in claim 1, wherein: the noise reduction device is a cylindrical barrel, the rotation axis of the fan blade is coincident with the horizontal axis of the noise reduction device, and the diameter of the fan blade is matched with the diameter of the section of the noise reduction cavity.
3. A steam pipe purge noise reducer as defined in claim 1, wherein: the air exhaust port also comprises a noise detector, wherein the noise detector is arranged on the outer side wall of the air exhaust port.
4. A steam pipe purge noise reducer as defined in claim 1, wherein: the fan blade also comprises a PC, a piezoelectric film and a matched piezoelectric film sensor, wherein the piezoelectric film is coated on the surface of the fan blade, and the piezoelectric film sensor is respectively connected with the piezoelectric film and the PC in a communication way.
5. The noise reduction method for the steam pipeline purging is characterized by comprising the following steps of: a fan, a controller and a noise reduction device as claimed in claim 4 are needed; the fan is in communication connection with the controller, and the controller is in communication connection with the PC; the noise reduction method comprises the following steps:
Step S1, a critical threshold value is set on a PC in advance, wherein the critical threshold value is an electric signal fed back by a piezoelectric film material or an accumulated amount of the electric signal within a fixed duration; an air outlet of the fan is communicated with an inlet end of a pipeline to be purged, and an air outlet end of the pipeline to be purged is connected with an air inlet of the noise reduction device; rotating the front-stage baffle to a vertical state, fixing the baffle by a bolt, opening the cover, and communicating the deslagging air outlet with the outside;
step S2, the PC sends a starting signal to the controller, the controller controls the fan to start working, and purge steam and waste in a pipeline to be purged are discharged from a slag discharge air outlet;
s3, after the purging time t is continued, the front-stage baffle is rotated to a horizontal position and fixed by a bolt, and then the cover is reset to cover the slag discharge air outlet;
s4, on one hand, blowing fan blades to rotate by the blowing steam so as to drive the compressor to work, forming refrigeration circulation through the compressor, the condenser, the filter and the baffle type evaporator, thereby cooling the silencing cavity, finally cooling and denoising wind in the silencing cavity, and finally discharging the waste from the exhaust port after cooling and denoising the wind;
On the other hand, if the waste blown by the wind hits the piezoelectric film on the surface of the fan blade, the piezoelectric film converts the received pressure into an electric signal, the electric signal is fed back to the piezoelectric film sensor, the electric signal is fed back to the PC through the piezoelectric film sensor, when the electric signal or the accumulated amount of the electric signal is smaller than or equal to the critical threshold value, the fact that the interior of the pipeline to be purged is indicated to be clean, at the moment, the PC sends a stop signal to the controller, and the controller controls the fan to stop working to finish the purging task; otherwise, the fan continues to work.
6. The method for reducing noise in a steam line purge of claim 5, wherein: the time t is 3 minutes to 5 minutes.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200164354Y1 (en) * | 1999-07-21 | 2000-02-15 | 대우전자주식회사 | Refrigerating cycle for reducing noise in refrigerator |
| JP2004020160A (en) * | 2002-06-20 | 2004-01-22 | Denso Corp | Vapor compression type refrigerator |
| CN201439724U (en) * | 2009-08-25 | 2010-04-21 | 武汉钢铁(集团)公司 | Silencer for sweeping steam pipeline |
| CN202001082U (en) * | 2011-03-29 | 2011-10-05 | 四川电力建设三公司 | Steam-blowing silencing device |
| CN202427687U (en) * | 2011-12-16 | 2012-09-12 | 中国轻工建设工程有限公司 | Processing device for steam blowing of pipeline |
| WO2016067864A1 (en) * | 2014-10-30 | 2016-05-06 | 三菱日立パワーシステムズ株式会社 | Piping system, vapor turbine plant, and method for cleaning piping system |
| CN206075809U (en) * | 2016-08-15 | 2017-04-05 | 连云港市万达电站辅机厂 | A kind of blowpipe steam discharge dual-purpose muffler |
| CN109013574A (en) * | 2018-07-30 | 2018-12-18 | 江苏中伟机械制造有限公司 | A kind of pipeline steam purging muffler |
| CN209550150U (en) * | 2019-01-16 | 2019-10-29 | 福建省工业设备安装有限公司 | A kind of denoising device of sweeping steam pipeline |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090065295A1 (en) * | 2007-09-11 | 2009-03-12 | Sherikar Sanjay V | Desuperheater muffler |
-
2019
- 2019-01-16 CN CN201910039175.6A patent/CN109692856B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200164354Y1 (en) * | 1999-07-21 | 2000-02-15 | 대우전자주식회사 | Refrigerating cycle for reducing noise in refrigerator |
| JP2004020160A (en) * | 2002-06-20 | 2004-01-22 | Denso Corp | Vapor compression type refrigerator |
| CN201439724U (en) * | 2009-08-25 | 2010-04-21 | 武汉钢铁(集团)公司 | Silencer for sweeping steam pipeline |
| CN202001082U (en) * | 2011-03-29 | 2011-10-05 | 四川电力建设三公司 | Steam-blowing silencing device |
| CN202427687U (en) * | 2011-12-16 | 2012-09-12 | 中国轻工建设工程有限公司 | Processing device for steam blowing of pipeline |
| WO2016067864A1 (en) * | 2014-10-30 | 2016-05-06 | 三菱日立パワーシステムズ株式会社 | Piping system, vapor turbine plant, and method for cleaning piping system |
| CN206075809U (en) * | 2016-08-15 | 2017-04-05 | 连云港市万达电站辅机厂 | A kind of blowpipe steam discharge dual-purpose muffler |
| CN109013574A (en) * | 2018-07-30 | 2018-12-18 | 江苏中伟机械制造有限公司 | A kind of pipeline steam purging muffler |
| CN209550150U (en) * | 2019-01-16 | 2019-10-29 | 福建省工业设备安装有限公司 | A kind of denoising device of sweeping steam pipeline |
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| CN109692856A (en) | 2019-04-30 |
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