CN220581980U - High-temperature high-pressure steam discharge silencing device - Google Patents

Abstract

The utility model relates to a high-temperature high-pressure steam emission silencing device, which comprises: a first housing having an air inlet and an air outlet; the inlet pipe is provided with a plugging end, the plugging end penetrates into the first shell through the air inlet, a plurality of first through holes are formed in the outer wall of the inlet pipe, which is positioned in the first shell, and the first through holes are annularly arranged; the second shell is positioned in the first shell and sleeved on the outer wall of the inlet pipe, a plurality of second through holes are formed in the outer wall of the second shell, and the second through holes are annularly arranged; each row of the first through holes arranged in the circumferential direction and each row of the second through holes arranged in the circumferential direction are positioned on different planes. Through the two-stage pressure control structure, the airflow discharged by steam is changed from pressure abrupt change emptying to pressure gradual change emptying, and meanwhile, the first through hole and the second through hole are positioned on different planes, so that the atmospheric emission noise is further reduced.

Description

High-temperature high-pressure steam discharge silencing device

Technical Field

The utility model relates to the field of silencers, in particular to a silencer for high-temperature and high-pressure steam discharge.

Background

Silencers are widely applied in nuclear power plants, and are commonly used as standard equipment of auxiliary water supply system (TFA) steam turbine exhaust pipelines, direct flow evaporator (OTSG) purge exhaust pipelines and steam atmospheric emission system (TSA) pipelines, wherein each purge or exhaust pipeline is required to be arranged.

The steam atmosphere discharge system performs the function of discharging redundant steam to the atmosphere by the main steam system of the nuclear power station under the expected operation transient or accident working condition of the power station, and preventing the overpressure of the steam generator. Under the following working conditions, the system executes the pressure relief function of the main steam system, protects the safety of the main steam pipeline and discharges the heat of the reactor core. When the reactor is up, down, and power is up and down, the atmosphere discharge system can discharge the steam generated by the steam generator to the atmosphere through the atmosphere discharge valve to discharge the heat generated by the reactor core.

In the related art, the noise reducing effect of the silencer of the steam atmosphere emission system in the blowing or steam emission process is poor, the environmental quality is poor, and the actual use requirement cannot be met.

Disclosure of Invention

The embodiment of the utility model provides a silencer for high-temperature high-pressure steam emission, which aims to solve the problems that the silencer for a steam atmosphere emission system in the related art has poor noise reducing effect in the process of blowing or steam emission, improves poor environment quality and cannot meet the actual use requirements.

The embodiment of the utility model provides a high-temperature high-pressure steam emission silencing device, which comprises:

a first housing having an air inlet and an air outlet;

the inlet pipe is provided with a plugging end, the plugging end penetrates into the first shell through the air inlet, a plurality of first through holes are formed in the outer wall of the inlet pipe, which is positioned in the first shell, and the first through holes are annularly arranged;

the second shell is positioned in the first shell and sleeved on the outer wall of the inlet pipe, a plurality of second through holes are formed in the outer wall of the second shell, and the second through holes are annularly arranged;

each row of the first through holes arranged in the circumferential direction and each row of the second through holes arranged in the circumferential direction are positioned on different planes.

In some embodiments, the plurality of first through holes arranged in a circumferential direction are a group of first hole units, and the plurality of second through holes arranged in a circumferential direction are a group of second hole units;

the outer wall that the inlet tube is located in the first casing is provided with multiunit first hole unit, the outer wall of second casing is provided with multiunit second hole unit, arbitrary group first hole unit and arbitrary group second hole unit are located different planes.

In some embodiments, a labyrinth type silencing sheet is installed in the first shell, and is provided with a plurality of silencing channels, and the silencing channels are communicated with the air outlet;

steam is discharged through the inlet pipe, the second housing, the first housing, and the sound deadening passageway.

In some embodiments, the sound attenuation channel comprises:

the two concave channels are arranged in the shell, one end of the first concave channel is communicated with the inside of the first shell, the other end of the first concave channel is communicated with one end of the second concave channel, the other end of the second concave channel is communicated with the air outlet, and the two concave channels are arranged in a central symmetry mode.

In some embodiments, the labyrinth muffler sheet comprises a metal frame, a metal perforated plate, glass cloth and superfine glass fiber cotton.

In some embodiments, the labyrinth muffler sheet comprises a metal frame, a metal perforated plate and stainless steel wires.

In some embodiments, the first housing is provided with a solenoid valve, the sprinkler head is arranged in the second housing, and the solenoid valve is communicated with the sprinkler head through a pipeline.

In some embodiments, the inner wall of the first housing is fitted with a sound damping and insulating layer.

In some embodiments, two ends of the second housing are spherically arranged.

In some embodiments, one end of the first housing is arranged in a semi-ellipsoidal shape.

The technical scheme provided by the utility model has the beneficial effects that: steam can get into from the other end of inlet tube, through a plurality of first through-holes that set up in the hoop on the inlet tube, form one-level accuse pressure structure to through a plurality of second through-holes that set up in the hoop on the second casing, form second accuse pressure structure, disperse through two-level accuse pressure structure and bear steam exhaust's big pressure drop, the pressure drop that every level accuse pressure structure bore gradually reduces, make steam exhaust air current change into pressure gradual change evacuation by pressure sudden change evacuation, avoid the strong jet noise that big pressure drop steam exhaust produced, every row of first through-holes that set up in the hoop and every row of second through-holes that set up in the hoop are located different planes simultaneously, can avoid steam directly to discharge outside the second casing, further reduce atmospheric emission noise, improve noise spectrum quality, reach noise pollution prevention and cure target.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an internal structure of a high-temperature and high-pressure steam emission muffler according to an embodiment of the present utility model.

In the figure: 1. a first housing; 11. an air inlet; 12. an air outlet; 2. an inlet pipe; 21. plugging the end; 22. a first through hole; 23. an inlet end; 3. a second housing; 31. a second through hole; 4. labyrinth type silencing sheets; 41. a sound deadening passageway; 411. a concave channel; 5. an electromagnetic valve; 6. a sprinkler head; 7. a pipeline; 8. a sound damping and insulating layer; 9. and (5) a water drain pipe.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model provides a silencer for high-temperature high-pressure steam emission, which aims to solve the problems that the silencer for a steam atmosphere emission system in the related art has poor noise reducing effect in the process of blowing or steam emission, improves poor environment quality and cannot meet the actual use requirements.

As shown in fig. 1, an embodiment of the present utility model provides a high temperature and high pressure steam discharge muffler device, which may include: a first housing 1, the first housing 1 having an air inlet 11 and an air outlet 12; the inlet pipe 2, one end of the inlet pipe 2 is a blocking end 21, the blocking end 21 penetrates into the first shell 1 through the air inlet 11, a plurality of first through holes 22 are formed in the outer wall of the inlet pipe 2 positioned in the first shell 1, and the plurality of first through holes 22 are arranged in a circumferential direction; the second shell 3 is positioned in the first shell 1 and sleeved on the outer wall of the inlet pipe 2, a plurality of second through holes 31 are formed in the outer wall of the second shell 3, and the second through holes 31 are arranged in a circumferential direction; each row of the first through holes 22 arranged in the circumferential direction and each row of the second through holes 31 arranged in the circumferential direction are located on different planes.

The first casing 1 may be disposed up and down, the air inlet 11 may be disposed at the bottom of the first casing 1, the air outlet 12 is disposed at the top of the first casing 1, high-temperature and high-pressure steam may enter from the low end of the inlet pipe 2 and be discharged into the second casing 3 from the first through holes 22, and be discharged from each row of second through holes 31 disposed in a different plane from each row of first through holes 22 disposed in a circumferential direction, so as to prolong a steam travelling path, consume energy of the steam and noise caused by the steam, and be discharged into the first casing 1, and then be discharged from the air outlet 12. The blocking end 21 can prevent steam from directly entering the first shell 1, and cannot achieve the effects of reducing pressure and noise.

Specifically, steam can get into from the other end of inlet tube 2, through a plurality of first through-holes 22 that set up in the hoop on the inlet tube 2, form one-level accuse pressure structure, and through a plurality of second through-holes 31 that set up in the hoop on the second casing 3, form two-level accuse pressure structure, disperse the big pressure drop that bears steam exhaust through two-level accuse pressure structure, the pressure drop that every level accuse pressure structure bore progressively reduces, make steam exhaust air current change from pressure sudden change evacuation to pressure gradual change evacuation, avoid the strong jet noise that big pressure drop discharged the steam and produce, every row of first through-holes 22 that set up in the hoop and every row of second through-holes 31 that set up in the hoop are located the different plane simultaneously, can avoid steam to directly discharge outside the second casing 3, lengthen the discharge path of steam, further reduce atmospheric emission noise, improve noise spectrum quality, reach noise pollution prevention and cure target.

In some embodiments, as shown in fig. 1, the plurality of first through holes 22 disposed in a circumferential direction are a set of first hole units, and the plurality of second through holes 31 disposed in a circumferential direction are a set of second hole units; the outer wall of the inlet pipe 2 in the first shell 1 is provided with a plurality of groups of first hole units, the outer wall of the second shell 3 is provided with a plurality of groups of second hole units, and any group of first hole units and any group of second hole units are located on different planes.

Wherein, can set up multiunit first hole unit at the outer wall of inlet tube 2, the outer wall of second casing 3 is provided with multiunit second hole unit, arbitrary one set of first hole unit and arbitrary one set of second hole unit are located different planes, improve the effect to vapor pressure noise reduction between first casing 1 and the second casing 3.

In some embodiments, as shown in fig. 1, a labyrinth muffler piece 4 is installed in the first housing 1, the labyrinth muffler piece 4 is provided with a plurality of muffler channels 41, and the muffler channels 41 are communicated with the air outlet 12; steam is discharged through the inlet pipe 2, the second housing 3, the first housing 1, and the sound deadening passageway 41.

Wherein, can be at first casing 1 upper end internally mounted labyrinth noise elimination piece 4, noise reduction passageway 41 and gas outlet 12, the steam of pressure drop noise reduction gets into in the noise reduction passageway 41, is further carried out the amortization by labyrinth noise elimination piece 4 and falls the noise reduction purpose to the steam.

In some embodiments, as shown in fig. 1, the silencing channel 41 may include: at least two concave channels 411, wherein one end of the first concave channel 411 is communicated with the inside of the first shell 1, the other end of the first concave channel 411 is communicated with one end of the second concave channel 411, the other end of the second concave channel 411 is communicated with the air outlet 12, and the two concave channels 411 are arranged in a central symmetry manner.

Wherein, steam bends and moves forward in the concave channel 411, so that the travel path of the steam is prolonged, the noise generated by the absorption of the steam by the labyrinth muffler 4 is improved, and the discharged steam noise is ensured to reach the environmental requirement. The noise reduction channel 41 has a concave-convex structure, and improves the probability of the gas striking the labyrinth noise reduction sheet 4, and also reduces the energy more, thereby reducing the noise.

In some embodiments, the labyrinth muffler sheet 4 comprises a metal frame, a metal perforated plate, glass cloth and ultra-fine glass fiber wool.

Specifically, the metal frame may be fixed between the insides of the upper ends of the first housing 1, and the noise-reducing passage 41 is formed between the two metal perforated plates, and glass cloth and ultra-fine glass floss may be filled between the metal frame and the metal perforated plates to absorb noise. The labyrinth circuit increases the time for the air flow to circulate in the sound deadening passageway 41 while the air constantly impinges on the glass cloth, soundproof cotton to attenuate energy and thereby reduce noise.

In some embodiments, the labyrinth muffler sheet 4 comprises a metal frame, a metal perforated plate and stainless steel wires.

Specifically, the metal frame may be fixed between the insides of the upper ends of the first housing 1, through which the sound deadening passageway 41 is formed, and between which the stainless steel wire may be filled, to absorb noise.

In some embodiments, as shown in fig. 1, the first housing 1 is provided with a solenoid valve 5, and the sprinkler head 6 is installed in the second housing 3, and the solenoid valve 5 is communicated with the sprinkler head 6 through a pipeline 7.

Wherein, can install sprinkler 6 in the inside upper end of second casing 3, sprinkler 6 passes through pipeline 7 and solenoid valve 5 intercommunication, when carrying out the pressure drop noise reduction again, can reduce the temperature and pressure to steam through sprinkler 6, can further improve pressure drop noise reduction effect.

Still further, the bottom of the second casing 3 may be provided with a water outlet, and the bottom of the first casing 1 may be provided with a drain pipe 9, so as to discharge condensed water sprayed by the sprinkler 6. The condensed water after being discharged and utilized can be collected for recycling.

In some embodiments, as shown in fig. 1, the inner wall of the first housing 1 is provided with a sound-damping and insulating layer 8. Wherein the noise reducing effect of the device can be further improved by the sound damping and insulating layer 8. Specifically, the sound-absorbing and sound-insulating layer 8 can be made of sound-absorbing cotton, rock wool and the like, and can effectively absorb sound waves and reduce noise transmission.

In some embodiments, as shown in fig. 1, two ends of the second housing 3 are spherically disposed. The two ends of the second shell 3 are arranged in a spherical surface, so that the second shell can bear larger pressure requirements, and further buffer the second shell, and the noise reduction effect is improved.

In some embodiments, as shown in fig. 1, one end of the first housing 1 is disposed in a semi-ellipsoidal shape. One end of the first casing 1 is arranged in a semi-ellipsoidal shape, so that more silencing and sound-insulating layers 8 can be filled at the bottom of the first casing 1, and the noise reduction effect is further improved.

In summary, the middle part of the inlet pipe 2 is distributed with a plurality of first through holes 22 from top to bottom to form a primary pressure control structure; the middle section of the inlet pipe 2 is coaxially arranged and fixedly connected with the second shell 3, a plurality of second through holes 31 are distributed on the wall of the second shell 3 from top to bottom, through holes on the inlet pipe 2 and the second shell 3 are alternately distributed at intervals, a sprinkler 6 is arranged on the spherical surface of the upper part of the second shell 3 between the inlet pipe 2 and the second shell 3, an electromagnetic valve 5 for controlling the sprinkler 6 to be opened and closed is synchronously opened and closed with an atmospheric discharge valve, the electromagnetic valve is condensed when cold water is encountered during the rising flow of high-temperature high-pressure steam, the pressure, the temperature and the flow of the steam are simultaneously reduced, noise is reduced, and the condensed water flows out of a drain pipe 9 through a water outlet hole on the spherical surface of the lower part of the second shell 3 to form a secondary pressure control structure; the top end of the inlet pipe 2 is closed (the plugging end 21 is closed), the bottom end (the inlet end 23) is fixedly connected to an atmospheric exhaust port, the large pressure drop discharged by the atmospheric exhaust port is dispersedly borne through a multi-stage pressure control structure, the pressure drop borne by each stage of pressure control structure is gradually reduced, so that the air flow discharged by the atmospheric exhaust port is changed from pressure abrupt change emptying to pressure gradual change emptying, the intense jet noise generated by the large pressure drop steam discharge is avoided, the labyrinth type silencing sheet 4 is used for further absorbing sound, the pressure drop process in the equipment can be controlled, the atmospheric exhaust noise is reduced, the noise spectrum quality is improved, the noise pollution prevention and control target is achieved, the use requirements of high pressure and large flow of the high-temperature high-pressure steam exhaust regulating valve are met, and the silencing effect is good; the method can be popularized to the pollution treatment of the emission noise of other generator sets at high temperature and high pressure and all pressure steam fluid, and the cost performance of the method has a relatively advantage in an extreme parameter environment; the energy conservation and environmental protection of the nuclear power project are maintained, the noise can be reduced, the environmental quality is improved, and the applicability is wide.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that in the present utility model, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A high temperature high pressure steam emission muffler device, comprising:

a first housing (1), the first housing (1) having an air inlet (11) and an air outlet (12);

the inlet pipe (2), one end of the inlet pipe (2) is a blocking end (21), the blocking end (21) penetrates into the first shell (1) through the air inlet (11), a plurality of first through holes (22) are formed in the outer wall of the inlet pipe (2) positioned in the first shell (1), and the first through holes (22) are annularly arranged;

the second shell (3), the second shell (3) is located in the first shell (1) and is sleeved on the outer wall of the inlet pipe (2), a plurality of second through holes (31) are formed in the outer wall of the second shell (3), and the second through holes (31) are arranged in a circumferential mode;

each row of the first through holes (22) and each row of the second through holes (31) which are arranged in the circumferential direction are positioned on different planes.

2. The high-temperature and high-pressure steam discharge muffler device as claimed in claim 1, wherein:

the first through holes (22) are annularly arranged to form a group of first hole units, and the second through holes (31) are annularly arranged to form a group of second hole units;

the inlet pipe (2) is located the outer wall in first casing (1) is provided with multiunit first hole unit, the outer wall of second casing (3) is provided with multiunit second hole unit, arbitrary one set of first hole unit and arbitrary one set of second hole unit are located different planes.

3. The high-temperature and high-pressure steam discharge muffler device as claimed in claim 1, wherein:

the labyrinth type silencing piece (4) is arranged in the first shell (1), a plurality of silencing channels (41) are formed in the labyrinth type silencing piece (4), and the silencing channels (41) are communicated with the air outlet (12);

steam is discharged through the inlet pipe (2), the second housing (3), the first housing (1) and the sound deadening passageway (41).

4. The high-temperature and high-pressure steam discharge muffler device as claimed in claim 3, wherein:

the sound deadening passage (41) includes:

the two concave channels (411) are arranged in a central symmetry mode, one end of the first concave channel (411) is communicated with the inside of the first shell (1), the other end of the first concave channel is communicated with one end of the second concave channel (411), the other end of the second concave channel (411) is communicated with the air outlet (12), and the two concave channels (411) are arranged in a central symmetry mode.

5. The high-temperature and high-pressure steam discharge muffler device as claimed in claim 3, wherein:

the labyrinth type silencing sheet (4) is formed by compounding a metal frame, a metal perforated plate, glass cloth and superfine glass silk floss.

6. The high-temperature and high-pressure steam discharge muffler device as claimed in claim 3, wherein:

the labyrinth type silencing sheet (4) comprises a metal frame, a metal perforated plate and stainless steel wires.

7. The high-temperature and high-pressure steam discharge muffler device as claimed in claim 1, wherein:

the electromagnetic valve (5) is installed in the first shell (1), the sprinkler (6) is installed in the second shell (3), and the electromagnetic valve (5) is communicated with the sprinkler (6) through a pipeline (7).

8. The high-temperature and high-pressure steam discharge muffler device as claimed in claim 1, wherein:

the inner wall of the first shell (1) is provided with a silencing and sound-insulating layer (8).

9. The high-temperature and high-pressure steam discharge muffler device as claimed in claim 1, wherein:

the two ends of the second shell (3) are arranged in a spherical surface.

10. The high-temperature and high-pressure steam discharge muffler device as claimed in claim 1, wherein:

one end of the first shell (1) is arranged in a semi-ellipsoidal shape.