CN111271540A - Air inlet silencing device for positive pressure type analysis room - Google Patents
Air inlet silencing device for positive pressure type analysis room Download PDFInfo
- Publication number
- CN111271540A CN111271540A CN202010105233.3A CN202010105233A CN111271540A CN 111271540 A CN111271540 A CN 111271540A CN 202010105233 A CN202010105233 A CN 202010105233A CN 111271540 A CN111271540 A CN 111271540A
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- CN
- China
- Prior art keywords
- positive pressure
- exhaust pipe
- layer
- silencing
- pressure type
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/0336—Noise absorbers by means of sound-absorbing materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/24—Preventing accumulation of dirt or other matter in the pipes, e.g. by traps, by strainers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to the technical field of electric appliance cabinets, and discloses a positive pressure type air inlet silencing device for an analysis room, which comprises a silencing structure, wherein the silencing structure comprises a direct exhaust pipe, a silencing layer and an exhaust pipe protective layer, and air holes are uniformly distributed on the pipe wall of the direct exhaust pipe; the silencing layer is breathable and covers the air holes; the exhaust pipe protective layer is sleeved on the outer side of the noise reduction layer, and an exhaust channel is arranged between the exhaust pipe protective layer and the noise reduction layer. The compressed gas in the direct exhaust pipe is diffused and decompressed and exhausted in the silencing layer through the air holes; the exhaust pipe protective layer protects the sound-deadening layer from being damaged and enables compressed gas to uniformly diffuse in the positive pressure room after passing through the sound-deadening layer.
Description
Technical Field
The invention relates to the technical field of electric appliance cabinets, in particular to a positive pressure type air inlet silencing device for an analysis room.
Background
In the field of petrochemical production, some precision instruments or power distribution equipment need to be isolated and explosion-proof by using a positive pressure room or a building. Protective gas is filled in the positive pressure room, so that the internal pressure of the positive pressure room is higher than the external atmospheric pressure to prevent the gas from invading the room, thereby avoiding the isolation of electrical equipment which possibly becomes an ignition source from explosive gas and protecting the electrical equipment.
In such a positive pressure room, an air inlet device for protective gas is required to be additionally installed, and conventionally, the fresh air pipeline is compressed into the positive pressure room through a fan in a safe area so as to achieve the purpose of filling the protective gas. The disadvantages of this method are: the laying of new wind pipeline is comparatively loaded down with trivial details and later maintenance breaks down easily. The other method is as follows: the compressed air is directly filled to achieve the purpose of protection, but the method needs to be provided with a set of air inlet device suitable for the compressed air in a positive pressure room, and the compressed air has high pressure, so that the noise is very high at an outlet after being released into the room.
Disclosure of Invention
The invention provides a positive pressure type air inlet silencing device for an analysis room, which solves the problem that compressed air is released to generate noise in the prior art.
The technical scheme of the invention is realized as follows: a positive pressure type analysis room air inlet silencing device comprises a silencing structure, wherein the silencing structure comprises
The pipe wall of the direct exhaust pipe is uniformly distributed with air holes;
the silencing layer is breathable and covers the air holes;
and the exhaust pipe protective layer is sleeved on the outer side of the silencing layer, and an exhaust channel is arranged between the exhaust pipe protective layer and the silencing layer.
As a preferred technical scheme, the direct exhaust pipe is a plastic pipe or a polyvinyl chloride pipe or a stainless steel pipe.
As a preferred technical scheme, the air holes are round holes.
As a preferable technical scheme, the noise reduction layer is made of flame retardant materials.
As a preferable technical scheme, the flame retardant material is polyester fiber or polyurethane sponge.
As a preferable technical scheme, the silencing layer is tubular and is sleeved outside the direct exhaust pipe.
As a preferred technical scheme, the exhaust pipe protective layer is a galvanized pipe or a stainless steel pipe.
As a preferred technical scheme, the upstream end of the direct exhaust pipe is communicated with a transfer pipe; a positive pressure gas control device and a positive pressure gas filtering device are arranged between the adapter tube and the positive pressure gas input tube, and the positive pressure gas filtering device is positioned at the upstream of the positive pressure gas control device.
The invention has the beneficial effects that: install silencing device additional at the air inlet of malleation gas input pipe, silencing device comprises three layer construction: the innermost layer is a direct exhaust pipe, air holes are uniformly formed in the pipe wall of the direct exhaust pipe, and compressed air in the direct exhaust pipe is exhausted from the air holes; the middle layer is a silencing layer which is directly fixed on the direct exhaust pipe to diffuse the exhausted gas through the silencing layer and discharge the gas under reduced pressure; the outmost layer is an exhaust pipe protective layer, the sound-deadening layer is protected from being damaged, compressed gas is uniformly diffused in the positive pressure room after passing through the sound-deadening layer, and a fixed body of the silencer is provided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic layout of an intake silencer;
FIG. 2 is a schematic structural view of a noise-reducing structure;
fig. 3 is a schematic sectional structure view of the sound deadening structure.
In the figure, 1-sound deadening structure; 11-direct exhaust pipe; 12-a sound damping layer; 13-an exhaust pipe protective layer; 14-an exhaust channel; 15-a transfer tube; 2-positive pressure gas control means; 3-a positive pressure gas filtration device; 4-positive pressure gas input pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments, and the description of the embodiments is provided to help understanding of the present invention, but not to limit the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
A positive pressure type analysis room air inlet silencing device is shown in figure 3 and comprises a silencing structure 1, wherein the silencing structure 1 comprises a direct exhaust pipe 11, a silencing layer 12 and an exhaust pipe protective layer 13.
Air holes are uniformly distributed on the pipe wall of the direct exhaust pipe 11; optimally, the air holes are round holes, and the processing and the manufacturing are convenient. The direct exhaust pipe 11 is a plastic pipe or a polyvinyl chloride pipe or a stainless steel pipe, and can meet the pipeline pressure.
The sound-deadening layer 12 is permeable to air and covers the pores, and the compressed gas is diffused through the sound-deadening layer 12 and discharged under reduced pressure. The sound-deadening layer 12 is made of a flame-retardant material, preferably, polyester fiber or polyurethane sponge.
Preferably, the silencing layer 12 is tubular and is sleeved outside the direct exhaust pipe 11, so that the processing and the assembly are convenient.
The exhaust pipe protective layer 13 is sleeved outside the silencing layer 12, so that the silencing layer 12 can be protected from being damaged; on the other hand, the fixation of the silencing structure is provided, and the silencing structure is fixed through the exhaust pipe protective layer 13; preferably, the exhaust pipe protective layer 12 is a galvanized pipe or a stainless steel pipe.
An exhaust passage 14 is arranged between the exhaust pipe protective layer 13 and the silencing layer 12, so that compressed gas can uniformly diffuse in the positive pressure room after passing through the silencing layer 12.
The upstream end of the direct exhaust pipe 11 is communicated with a switching pipe 15; a positive pressure gas control device 2 and a positive pressure gas filtering device 3 are arranged between the adapter tube 15 and the positive pressure gas input tube 4, and the positive pressure gas filtering device 3 is positioned at the upstream of the positive pressure gas control device 2. The positive pressure gas control device 2 comprises an electromagnetic valve and a manual valve body which are arranged in parallel, the positive pressure gas filtering device 3 can adopt the existing gas filter in the market, and the positive pressure gas filtering device 3 is positioned at the upstream of the positive pressure gas control device 2, so that the blockage of the positive pressure gas control device 2 can be avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a positive pressure type analysis room silencing device that admits air which characterized in that: comprises a sound attenuation structure which comprises
The pipe wall of the direct exhaust pipe is uniformly distributed with air holes;
the silencing layer is breathable and covers the air holes;
and the exhaust pipe protective layer is sleeved on the outer side of the silencing layer, and an exhaust channel is arranged between the exhaust pipe protective layer and the silencing layer.
2. The positive pressure type analysis room air intake silencer according to claim 1, wherein: the direct exhaust pipe is a plastic pipe or a polyvinyl chloride pipe or a stainless steel pipe.
3. A positive pressure type analysis room air intake silencer according to claim 1 or 2, wherein: the air holes are round holes.
4. The positive pressure type analysis room air intake silencer according to claim 1, wherein: the noise reduction layer is made of flame-retardant materials.
5. The positive pressure type analysis room air intake silencer according to claim 4, wherein: the flame-retardant material is polyester fiber or polyurethane sponge.
6. The positive pressure type analysis room air intake silencer according to claim 1, wherein: the silencing layer is tubular and is sleeved on the outer side of the direct exhaust pipe.
7. The positive pressure type analysis room air intake silencer according to claim 1, wherein: the exhaust pipe protective layer is a galvanized pipe or a stainless steel pipe.
8. The positive pressure type analysis room air intake silencer according to claim 1, wherein: the upstream end of the direct exhaust pipe is communicated with a switching pipe; a positive pressure gas control device and a positive pressure gas filtering device are arranged between the adapter tube and the positive pressure gas input tube, and the positive pressure gas filtering device is positioned at the upstream of the positive pressure gas control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105233.3A CN111271540A (en) | 2020-02-20 | 2020-02-20 | Air inlet silencing device for positive pressure type analysis room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105233.3A CN111271540A (en) | 2020-02-20 | 2020-02-20 | Air inlet silencing device for positive pressure type analysis room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111271540A true CN111271540A (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010105233.3A Pending CN111271540A (en) | 2020-02-20 | 2020-02-20 | Air inlet silencing device for positive pressure type analysis room |
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| Country | Link |
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| CN (1) | CN111271540A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0816175A (en) * | 1994-06-27 | 1996-01-19 | Calsonic Corp | Active type silencer |
| CN201620936U (en) * | 2010-02-08 | 2010-11-03 | 杭州盛大高科技机电有限公司 | Straight-line silencer |
| CN202868188U (en) * | 2012-10-17 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司 | Silencer for gas drilling |
| CN202946223U (en) * | 2012-12-25 | 2013-05-22 | 杭州盛大高科技机电有限公司 | Sleeve-type silencer |
| CN203271868U (en) * | 2013-05-20 | 2013-11-06 | 常州市星龙金属结构件有限公司 | Exhaust silencer |
| CN204082290U (en) * | 2014-10-15 | 2015-01-07 | 宁波思明汽车科技有限公司 | A kind of tailpipe |
| CN104291123A (en) * | 2014-09-18 | 2015-01-21 | 常州常衡德宇粉体集成***有限公司 | Exhausting and sound reducing device of positive-pressure conveying system |
| CN205074320U (en) * | 2015-09-28 | 2016-03-09 | 中国石油天然气股份有限公司 | Ventilation device |
-
2020
- 2020-02-20 CN CN202010105233.3A patent/CN111271540A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0816175A (en) * | 1994-06-27 | 1996-01-19 | Calsonic Corp | Active type silencer |
| CN201620936U (en) * | 2010-02-08 | 2010-11-03 | 杭州盛大高科技机电有限公司 | Straight-line silencer |
| CN202868188U (en) * | 2012-10-17 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司 | Silencer for gas drilling |
| CN202946223U (en) * | 2012-12-25 | 2013-05-22 | 杭州盛大高科技机电有限公司 | Sleeve-type silencer |
| CN203271868U (en) * | 2013-05-20 | 2013-11-06 | 常州市星龙金属结构件有限公司 | Exhaust silencer |
| CN104291123A (en) * | 2014-09-18 | 2015-01-21 | 常州常衡德宇粉体集成***有限公司 | Exhausting and sound reducing device of positive-pressure conveying system |
| CN204082290U (en) * | 2014-10-15 | 2015-01-07 | 宁波思明汽车科技有限公司 | A kind of tailpipe |
| CN205074320U (en) * | 2015-09-28 | 2016-03-09 | 中国石油天然气股份有限公司 | Ventilation device |
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Application publication date: 20200612 |