CN209278716U

CN209278716U - A kind of natural gas valve blowdown emptying silencing apparatus

Info

Publication number: CN209278716U
Application number: CN201821997722.9U
Authority: CN
Inventors: 杨玉鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2019-08-20
Anticipated expiration: 2028-11-30

Abstract

The utility model relates to a kind of natural gas valve blowdowns to be vented silencing apparatus, including air inlet pipe, isolation cover, air inlet inside pipe wall is fixedly installed installation screw thread, the resistive resistive noise-reducing structure of noise-reducing structure level-one of level-one is fixedly installed at the top of air inlet pipe, a section expansion chambers are fixedly installed at the top of the resistive noise-reducing structure of level-one, one section expansion ceiling is fixedly installed a section connecting tube, two section expansion chambers are fixedly installed at the top of one section connecting tube, two section connecting tubes are fixedly installed at the top of two section expansion chambers, three section expansion chambers are fixedly installed at the top of two section connecting tubes, the resistive noise-reducing structure of second level is fixedly installed at the top of three section expansion chambers, level-one resonant cavity is fixedly installed inside one section expansion chambers, secondary resonances chamber is fixedly installed inside two section expansion chambers, the utility model, the sound leaked out from noise-reducing structure is carried out absorbing to keep erasure effect more preferable again, The pollution to environment is reduced, and has saved the energy, when use is more steady.

Description

A kind of natural gas valve blowdown emptying silencing apparatus

Technical field

The utility model relates to natural gas vent muffling device technical fields, and in particular to a kind of natural gas valve blowdown is put Empty silencing apparatus.

Background technique

High-speed flow sprays from container, impacts and shear the air of surrounding static, causes gas violent near spout Disturbance forms exhaust spraying noise to generate the very high air power noise of sound level.In natural gas station and natural gas line Inspect periodically and maintenance process in, need by pipeline natural gas discharge, strong exhaust spraying noise can be generated at this time. This noise like is continuous wideband noise, and crest frequency is directly proportional to air velocity, is inversely proportional with air slit diameter.Work as exhaust In the case that mouth air velocity reaches the velocity of sound, that is, when blocking, Noisy acoustic power can also increase with the increase of injection pressure.It puts Empty exhaust noise is also referred to as jet noise, is a pollution sources outstanding.

Currently, application No. is the Chinese patents of CN201220257627.1 to disclose a kind of gas plant technical field Multistage composite natural gas air exhaust muffler device.The utility model is hung on the fixed structure of natural gas, and the multistage composite is natural Gas air exhaust muffler device includes sound-absorbing silencing pot, is divided into two sections inside the sound-absorbing silencing pot, respectively multistage composite sound insulation section and Diversion section is exported, which is connected to input terminal, which is connected to exhaust outlet, multistage composite sound insulation The output end of section and the input terminal of output diversion section have gap.Although the utility model structure is simple, the effect of absorption of noise is good, Needs of installation and overall beautiful are taken into account, but does not account for muffling device and there is leakage sound phenomenon, and cannot be to emptying gas It carries out recycling wasting problem.

Based on this, the utility model devises a kind of natural gas valve blowdown emptying silencing apparatus, to solve the above problems.

Utility model content

One main purpose of the utility model is to overcome at least one defect in the prior art, provide a kind of natural Air valve blowdown is vented silencing apparatus, there is leakage sound phenomenon to solve muffling device mentioned above in the background art, and cannot Emptying gas is carried out to recycle wasting problem.

In order to realize above-mentioned technical proposal, the utility model uses following technical scheme:

One aspect according to the present utility model provides a kind of natural gas valve blowdown emptying silencing apparatus, a kind of natural Air valve blowdown is vented silencing apparatus, including air inlet pipe, isolation cover, the air inlet inside pipe wall are fixedly installed installation screw thread, institute It states and is fixedly installed the resistive noise-reducing structure of level-one described in the resistive noise-reducing structure of level-one, the resistive noise reduction knot of level-one at the top of air inlet pipe A section expansion chambers are fixedly installed at the top of structure, the section expansion ceiling is fixedly installed a section connecting tube, the section connection Tube top portion is fixedly installed two section expansion chambers, and two section connecting tubes are fixedly installed at the top of the two sections expansion chambers, and two section connects Adapter tube top is fixedly installed three section expansion chambers, is fixedly installed the resistive noise-reducing structure of second level, institute at the top of the three sections expansion chambers It states and is fixedly installed level-one resonant cavity inside a section expansion chambers, be fixedly installed secondary resonances chamber inside the two sections expansion chambers, Three-level resonant cavity is fixedly installed inside the three sections expansion chambers, the isolation cover is set in a section expansion chambers, two section expansion chambers And three section expand chamber outer wall, recovery tube is fixedly connected at the top of the resistive noise-reducing structure of the second level, the recovery tube other end is solid Surely it is connected with pressurized equipment, the pressurized equipment other end is connected with recycling can, and the isolation cover outer wall is fixedly installed support Structure.

Preferably, the support construction includes support sleeve, and the support sleeve is set in isolation cover outer wall, the support sleeve bottom Portion is fixedly installed supporting leg, and nurse's supporting leg bottom has been connected through a screw thread telescopic.

Preferably, the isolation cover outer wall uses stainless steel material, and inner wall is using inorganic foamed.

Preferably, the length of the section expansion chambers is the half of two section expansion chambers, the length of the two sections expansion chambers Degree is the half of three section expansion chambers.

Preferably, the resistive noise-reducing structure of the level-one is honeycomb.

Compared with prior art, the utility model has the beneficial effects that 1. the utility model by setting blimp, to from The sound that noise-reducing structure leaks out carries out absorbing to keep erasure effect more preferable again.2. the utility model passes through setting recyclable device, Make discharge gas carry out recycling the pollution reduced to environment, and saves the energy.3. the utility model passes through setting support knot Structure reaches more stable effect when use.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, for ordinary skill people For member, without creative efforts, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the schematic diagram of internal structure that natural gas valve blowdown described in the utility model is vented silencing apparatus；

Fig. 2 is the utility model external structure schematic diagram；

Fig. 3 is the utility model Fig. 1 partial enlarged view.

In attached drawing, parts list represented by the reference numerals are as follows:

1- air inlet pipe, 2- isolation cover, 3- install screw thread, the resistive noise-reducing structure of 4- level-one, mono- section expansion chambers of 5-, mono- section of 6- company Adapter tube, bis- section expansion chambers of 7-, bis- section connecting tube of 8-, tri- section expansion chambers of 9-, the resistive noise-reducing structure of 10- second level, the resonance of 11- level-one Chamber, 12- secondary resonances chamber, 13- three-level resonant cavity, 14- recovery tube, 15- pressurized equipment, 16- recycling can, 17- support construction, 18- support sleeve, 19- supporting leg, 20- telescopic.

Specific embodiment

In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.Term The orientation or state relation of the instructions such as "inner", "upper", "lower" are orientation based on the figure or state relation, merely to just In description the utility model and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention is understood as the case may be.

It should be noted that the specification and claims of the utility model and term " first " in above-mentioned attached drawing, " second " etc. is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that in this way The data used are interchangeable under appropriate circumstances, so as to the embodiments of the present invention described herein.

With reference to the accompanying drawing and specific embodiment is described in further detail the utility model.

Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of natural gas valve blowdown emptying noise elimination dress It sets, including air inlet pipe 1, isolation cover 2,1 inner wall of air inlet pipe is fixedly installed installation screw thread 3, is fixedly installed one at the top of air inlet pipe 1 Grade resistive 4 level-one of noise-reducing structure resistive noise-reducing structure 4 is fixedly installed a section expansion chambers 5 at the top of the resistive noise-reducing structure 4 of level-one, One section expansion chambers 5 top is fixedly installed a section connecting tube 6, and two section expansion chambers 7, two sections are fixedly installed at the top of a section connecting tube 6 It is fixedly installed two section connecting tubes 8 at the top of expansion chambers 7, three section expansion chambers 9 are fixedly installed at the top of two section connecting tubes 8, three sections expand It opens and is fixedly installed the resistive noise-reducing structure 10 of second level at the top of room 9, be fixedly installed level-one resonant cavity 11 inside a section expansion chambers 5, It is fixedly installed secondary resonances chamber 12 inside two section expansion chambers 7, is fixedly installed three-level resonant cavity 13 inside three section expansion chambers 9, Isolation cover 2 is set in 9 outer wall of a section expansion chambers 5, two section expansion chambers 7 and three section expansion chambers, resistive 10 top of noise-reducing structure of second level It is fixedly connected with recovery tube 14,14 other end of recovery tube is fixedly connected with pressurized equipment 15, and 15 other end of pressurized equipment is connected with Recycling can 16,2 outer wall of isolation cover are fixedly installed support construction 17.

Wherein, support construction 17 includes support sleeve 18, and support sleeve 18 is set in 2 outer wall of isolation cover, and 18 bottom of support sleeve is solid Surely it is provided with supporting leg 19,19 bottom of nurse's supporting leg has been connected through a screw thread telescopic 20, can connect with utility model more steady It is fixed, it is not easy to topple over, and the adjustable length of telescopic 20 is used to adapt to out-of-flatness ground, 2 outer wall of isolation cover uses stainless steel Material, inner wall can play isolation and absorb the function of internal leakage sound, the length of a section expansion chambers 5 is two using inorganic foamed The half of expansion chambers 7 is saved, the length of two section expansion chambers 7 is the half of three section expansion chambers 9, and make every section passes through frequency Difference improves sound-damping qualities, and the resistive noise-reducing structure 4 of level-one is honeycomb, loose porous preferably to absorb sound wave.

One concrete application of the present embodiment are as follows: the utility model passes through installation screw thread 3 when in use and is tightened on blow valve Header, rotary extension set 20 make the length of telescopic 20 and supporting leg 19 be changed so that support construction 17 is more smoothly put It is placed in ground, to open emptying valve by support sleeve 18 by 2 stable in placement of isolation cover, high-speed flow is from container at this time It sprays, the air of impact and shearing surrounding static, causes gas disturbance violent near spout, to generate the very high sky of sound level Aerodynamic force noise, biggish noise can be generated by forming exhaust spraying noise, and noise initially enters the resistive noise-reducing structure 4 of level-one In honeycomb conduits, reflection is repeatedly generated in pipeline to reduce noise, due to sound wave direction of transfer and airflow direction one It causes, since gas tasselled are inhomogenous in pipeline, according to refraction principle, sound wave further promotes noise elimination noise reduction to bending is closed, Air-flow can also generate some noises by muffler simultaneously, and remaining noise can successively pass through a section expansion chambers 5, two section expansion chambers 7 and three section expansion chambers 9, unexpected expansion or contraction using sound wave in pipeline transmitting section cause acoustic impedance mutation in channel, Acoustic Wave Propagation direction is set to change phenomena such as reflection, interference occur in pipeline to achieve the purpose that noise elimination, while sound wave When by level-one resonant cavity 11, secondary resonances chamber 12 and three-level resonant cavity 13, using resonance principle, under the action of sound wave, Inner air tube column generates vibration, and air column enables a part of sound to be converted into thermal energy and dissipates with pipe friction when vibration, works as system When intrinsic frequency and frequency of sound wave resonate, sound energy consumption is most, and sound wave has partial sound leakage when through the above structure Out, it can be absorbed and be reflected again when encountering the inner wall of isolation cover 2, to reduce the appearance of leakage sound, improve erasure effect, gas Body enters recovery tube 14 after a series of noise eliminations, and the pressurized pressurization of equipment 15 is recycled in recycling can 16, so as to avoid putting The pollution of air body, also saves the energy.

It should be appreciated that the utility model is not limited in its application to the detailed construction and arrangement of component proposed in this paper Mode.The utility model can have other embodiments, and can realize and execute in many ways.Aforesaid deformation form It is fallen in the scope of the utility model with modification.It should be appreciated that the utility model disclosed and defined herein extends It is mentioned to text and/or drawings or all alternative combinations of two or more apparent independent features.It is described herein Embodiment illustrate to become known for realize the best mode of the utility model, and those skilled in the art will be enable to utilize The utility model.

Claims

1. a kind of natural gas valve blowdown is vented silencing apparatus, including air inlet pipe, isolation cover, which is characterized in that the air inlet pipe Inner wall is fixedly installed installation screw thread, is fixedly installed described in the resistive noise-reducing structure of level-one that level-one is resistive to disappear at the top of the air inlet pipe Sound structure, the resistive noise-reducing structure top of level-one are fixedly installed a section expansion chambers, the section expansion ceiling fixed setting There is a section connecting tube, two section expansion chambers are fixedly installed at the top of the section connecting tube, fixation is set at the top of the two sections expansion chambers Two section connecting tubes are equipped with, three section expansion chambers are fixedly installed at the top of the two sections connecting tube, are fixed at the top of the three sections expansion chambers It is provided with the resistive noise-reducing structure of second level, level-one resonant cavity, the two sections expansion chambers are fixedly installed inside the section expansion chambers Inside is fixedly installed secondary resonances chamber, and three-level resonant cavity, the isolation enclosure are fixedly installed inside the three sections expansion chambers It is located at a section expansion chambers, two section expansion chambers and three sections expansion chamber outer wall, is fixedly connected at the top of the resistive noise-reducing structure of second level Recovery tube, the recovery tube other end are fixedly connected with pressurized equipment, and the pressurized equipment other end is connected with recycling can, described Isolation cover outer wall is fixedly installed support construction.

2. a kind of natural gas valve blowdown according to claim 1 is vented silencing apparatus, which is characterized in that the support knot Structure includes support sleeve, and the support sleeve is set in isolation cover outer wall, and the support sleeve bottom is fixedly installed supporting leg, the branch Support leg bottom has been connected through a screw thread telescopic.

3. a kind of natural gas valve blowdown according to claim 1 is vented silencing apparatus, which is characterized in that the isolation cover Outer wall uses stainless steel material, and inner wall is using inorganic foamed.

4. a kind of natural gas valve blowdown according to claim 1 is vented silencing apparatus, which is characterized in that a section expands The length for opening room is the half of two section expansion chambers, and the length of the two sections expansion chambers is the half of three section expansion chambers.

5. a kind of natural gas valve blowdown according to claim 1 is vented silencing apparatus, which is characterized in that the level-one resistance Property noise-reducing structure be honeycomb.