CN104455753A - Pipeline through-double-layer-wall sound insulation structure for pipeline penetrating through two layers of walls and construction method - Google Patents
Pipeline through-double-layer-wall sound insulation structure for pipeline penetrating through two layers of walls and construction method Download PDFInfo
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- CN104455753A CN104455753A CN201410524230.8A CN201410524230A CN104455753A CN 104455753 A CN104455753 A CN 104455753A CN 201410524230 A CN201410524230 A CN 201410524230A CN 104455753 A CN104455753 A CN 104455753A
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- sleeve pipe
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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
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
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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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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a pipeline through-double-layer-wall sound insulation structure and a construction method, and belongs to the technical field of through-wall pipeline construction. The structure achieves sound insulation and sound reduction of the pipeline through-wall. The pipeline through-double-layer-wall sound insulation structure comprises a first casing pipe and a second casing pipe component which arranged outside the pipeline in a sleeving mode, the second casing pipe component comprises an independent first casing pipe body and an independent second casing pipe body, the first casing pipe body is fixed to the fixed wall, the second casing pipe body is fixed to a floating wall, and the second casing pipe body and the floating wall synchronously move. A first sound absorption material layer is arranged between the outer wall of the pipeline and the inner wall of the first casing pipe, and a metal hose joint is arranged at the end, close to the floating wall, of the pipeline. In the construction process, the fixed wall and the floating wall are firstly constructed, the first casing pipe body and the second casing pipe body are buried, the first casing pipe and the pipeline horizontally penetrates through the first casing pipe body and the second casing pipe body in sequence, and the metal hose joint is located at the end close to the floating wall. Finally, the first sound absorption material layer is arranged. The structure can prevent the pipeline in the floating wall from deforming, and the sound insulation and sound reduction effects of pipeline through-wall can be met. The construction method is easy and convenient to operate and shortens the construction period.
Description
Technical field
The invention belongs to wall feed-through pipeline technical field of construction, particularly relate to a kind of pipeline and wear double wall sound insulating structure and method of construction.
Background technique
Usually, some ventilation ducts and water pipe can be arranged in building masonry wall.When pipeline works, sound of the wind or the underwater sound can form noise, thus affect the defening effect of building.Therefore, in the building masonry wall higher to sound isolation requirement, pipeline through-wall structure all will do sound insulation process, to prevent the solid-borne sound transmission between pipeline and body of wall.Traditional way is, sound insulation by filling material between pipeline and body of wall, to reduce noise pollution.But, when building masonry wall is for floating wall, move because floating wall has vertical direction, adopt traditional pipeline through-wall structure cause the distortion of pipeline body because floating floating of wall, destroying.Therefore, the sound insulating structure how providing a kind of pipeline to wear double wall and method of construction are those skilled in the art's technical problems urgently to be resolved hurrily to meet the sound insulation and noise reduction of the double wall pipeline through-wall of fixing wall and floating wall composition.
Summary of the invention
A kind of pipeline is the object of the present invention is to provide to wear double wall sound insulating structure and method of construction, to solve the sound insulation and noise reduction problem of the double wall pipeline through-wall of fixing wall and floating wall composition.
To achieve these goals, technological scheme of the present invention is:
Double wall sound insulating structure worn by a kind of pipeline, described double wall comprises the fixing wall and floating wall that are set up in parallel successively, described floating wall moves at vertical direction, described pipeline is successively horizontal through described fixing wall and described floating wall, double wall sound insulating structure worn by described pipeline, comprise and be sheathed on the first sleeve pipe outside described pipeline and the second thimble assembly successively, described second thimble assembly is respectively separate sleeve pipe one and sleeve pipe two, described sleeve pipe one is fixedly installed on described fixing wall, described sleeve pipe two is fixedly installed on described floating wall, and described sleeve pipe two and described floating wall synchronizing moving, lay the first sound-absorbing material layer between described pipeline outer wall and described first set inner tube wall, described pipeline is provided with metal hose joint near one end of described floating wall.
Further, between described first sleeve outer wall and described sleeve pipe one inwall, be provided with grey mud layer, between described first sleeve outer wall and described sleeve pipe two inwall, lay the second sound-absorbing material layer.
Further, the length of described metal hose joint is 50mm-150mm.
Further, described pipeline is water pipe or airduct.
Further, described airduct outer wall is also pasted with warming plate.
Further, described first sound-absorbing material layer is rock wool layer.
The method of construction of double wall sound insulating structure worn by pipeline, comprises the steps:
Step one: construct described fixing wall and described floating wall, and at described fixing wall and the described reserved opening within the walls that floats, and fixing bury sleeve pipe one within the walls underground described, bury described sleeve pipe two within the walls underground described floating, and described sleeve pipe one and described sleeve pipe two separate;
Step 2: by described first sleeve pipe successively horizontal through described sleeve pipe one and described sleeve pipe two, described pipeline is sheathed in described first sleeve pipe, and make described metal hose joint be positioned at one end of close described floating wall;
Step 3: respectively described first sound-absorbing material layer is set between described sleeve pipe one and described first sleeve pipe and between described sleeve pipe two and described first sleeve pipe.
Further, also comprise step 4, between described first sleeve outer wall and described sleeve pipe one inwall, be provided with grey mud layer, and lay the second sound-absorbing material layer between described first sleeve outer wall and described sleeve pipe two inwall.
Further, described first sound-absorbing material layer in described water pipe and the two ends of described second sound-absorbing material layer arrange the first clay layer shutoff respectively.
Compared with prior art, tool has the following advantages and beneficial effect in the present invention:
1, double wall sound insulating structure worn by pipeline of the present invention, double wall comprises the fixing wall and floating wall that are set up in parallel successively, the wall that floats moves at vertical direction, pipeline is successively horizontal through fixing wall and floating wall, double wall sound insulating structure worn by described pipeline, comprise and be sheathed on the first sleeve pipe outside pipeline and the second thimble assembly successively, second thimble assembly is respectively separate sleeve pipe one and sleeve pipe two, sleeve pipe one is fixedly installed on fixing wall, sleeve pipe two is fixedly installed on floating wall, and sleeve pipe two and floating wall synchronizing moving; Lay the first sound-absorbing material layer between pipeline outer wall and first set inner tube wall, pipeline is provided with metal hose joint near the one end of the wall that floats.By arranging metal hose joint on pipeline, playing buffer function, when can prevent floating wall vertical direction from moving, being positioned at distortion or even the damage of the segment pipe floated within the walls.In addition, by laying sound-absorbing material between pipeline outer wall and the second thimble assembly inwall, noise when pipe ventilated or water flowing can be reduced.Therefore, the sound insulation and noise reduction effect that double wall sound insulating structure can meet the wall feed-through pipeline of the double wall be made up of fixing wall and floating wall worn by pipeline of the present invention.
2, the method for construction of double wall sound insulating structure worn by pipeline of the present invention, first the fixing wall of construction and floating wall, and at fixing wall and the reserved opening within the walls that floats, and bury sleeve pipe one within the walls underground fixing, float bury sleeve pipe two within the walls underground, and sleeve pipe one and sleeve pipe two separate; Then by the first sleeve pipe successively horizontal through sleeve pipe one and sleeve pipe two, pipeline is sheathed in the first sleeve pipe, and makes metal hose joint be positioned near the one end of wall of floating; Finally between sleeve pipe one and the first sleeve pipe and between sleeve pipe two and the first sleeve pipe, fill the first sound-absorbing material layer respectively.This method of construction is easy, and can ensure that floating wall is when vertical direction moves, pipeline is not damaged.Meanwhile, because metal hose joint can be installed on pipeline in advance, do not affect the working procedure of original Pipe installing, can the reduction of erection time.
Accompanying drawing explanation
Double wall sound insulating structure worn by pipeline of the present invention and method of construction is provided by following embodiment and accompanying drawing.
Fig. 1 is the structural representation that double wall sound insulating structure worn by one embodiment of the invention pipeline;
Fig. 2 is the structural representation that double wall sound insulating structure worn by another embodiment of the present invention pipeline.
Embodiment
Below in conjunction with the drawings and specific embodiments double wall sound insulating structure is worn to pipeline of the present invention and method of construction is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.
Composition and the method for construction that double wall sound insulating structure worn by pipeline of the present invention is described in detail below in conjunction with Fig. 1 and Fig. 2.
As shown in Figure 1, double wall sound insulating structure worn by a kind of pipeline, double wall comprises the fixing wall 1 and floating wall 2 that are set up in parallel successively, the wall 2 that floats moves at vertical direction, pipeline 3 is successively horizontal through fixing wall 1 and floating wall 2, double wall sound insulating structure worn by described pipeline, comprise the first sleeve pipe 40 and the second thimble assembly (not shown) be sheathed on successively outside pipeline, second thimble assembly is respectively separate sleeve pipe 1 and sleeve pipe 2 42, sleeve pipe 1 is fixedly installed on fixing wall 1, sleeve pipe 2 42 is fixedly installed on floating wall 2, and sleeve pipe 2 42 and floating wall 2 synchronizing moving, lay the first sound-absorbing material layer 51 between pipeline 3 outer wall and the first sleeve pipe 40 inwall, pipeline 3 is provided with metal hose joint 31 near the one end of the wall 2 that floats.Consider the convenience and Economy of drawing materials, usually select rock wool layer to select thickness to be the metal sleeve of 1.1mm-1.3mm as the first sound-absorbing material layer 51, first sleeve pipe 40.By laying the first sound-absorbing material layer 51 between pipeline outer wall and first set inner tube wall, cotton-shaped rock wool can be fixed on specified position, better sqouynd absorption lowering noise effect can be reached while saving rock wool material.
Specifically, be provided with at concert hall etc. in the building of floating wall (removable body of wall), lay the impact on pipeline when pipeline will take into full account that floating wall vertical direction moves.Therefore, adopt the pipeline of special setting in the present embodiment, on the body of wall side of floating, metal hose joint is set, the destruction to pipeline when moving to prevent floating wall vertical direction at pipeline.Because floating wall is little in the amplitude of vertical direction movement, normally positive and negative 50mm, by arranging metal hose joint, when floating wall vertical direction moves, metal hose joint can flexibility move and play buffer function in the certain limit of vertical direction, thus prevents the pipe deforming through floating wall part from even damaging.Level interval between metal hose joint and floating wall can be designed as 280mm-320mm, such as, can be designed as 300mm.In addition, establishing sound-absorbing material by filling out, the sound insulation and noise reduction effect that double wall sound insulating structure worn by pipeline can be improved.
Continue with reference to figure 1, consider that double wall is the fixing wall 1 and floating wall 2 that are set up in parallel, when floating wall 2 vertical direction moves, by arranging the protection that metal hose joint 31 can realize the segment pipe being positioned at floating wall 2 inside in pipeline 3 body.But the second thimble assembly is made by steel plate materials, be rigid construction, if double wall shares a sleeve pipe, will because floating wall 2 be at mobile destruction second thimble assembly of vertical direction.In order to address this problem, the present embodiment is provided with separate sleeve pipe 1 and sleeve pipe 2 42 respectively in fixing wall 1 and floating wall 2, wherein fix in wall 1 and bury sleeve pipe 1 underground, bury sleeve pipe 2 42 underground in the wall 2 that floats, do not connect between sleeve pipe 1 and sleeve pipe 2 42.Certainly, in order to reach good soundproof effect, the gap of sleeve pipe 1 and sleeve pipe 2 42 substantially horizontal is also provided with the first sound-absorbing material layer 51.Head (shutoff) is received with the first clay layer 61 in the two ends of the first sound-absorbing material layer 51, to close the first sound-absorbing material layer 51.
Continue with reference to figure 1, especially, between sleeve pipe 2 42 and floating wall 2, be provided with the second sound-absorbing material layer 52.Usual second sound-absorbing material layer 52 selects rock wool layer, draws materials to facilitate and constructs.When the object arranging the second sound-absorbing material layer 52 being to make floating wall 2 move, contacting for soft between sleeve pipe 2 42 with floating wall 2, playing certain buffer function, thus prevent the solid-borne sound transmission between sleeve pipe 2 42 and floating wall 2, reach the effect of sound insulation and noise reduction.In addition, the two ends of the second sound-absorbing material layer 52 all adopt the second clay layer 62 to receive head.Certainly, fixing wall 1 and floating wall 2 body of wall outermost are equipped with decorative layer 7.
Continue with reference to figure 1, further, in order to reach good cushioning effect, and do not affect the function of pipeline 3, the length of metal hose joint 31 is 50mm-150mm.
Continue with reference to figure 1, especially, in order to fill the space between fixing wall 1 and sleeve pipe 1, and playing buffer action, making directly not contact therebetween, between fixing wall 1 and sleeve pipe 1, be also provided with plaster 63.
Continue with reference to figure 1, the pipeline 3 of the present embodiment is water pipe.In order to increase the water output of pipeline 3 per unit volume, usual water pipe is circular.
As shown in Figure 2, pipeline 3 is airduct in another embodiment of the invention, for indoor air-supply.In order to reduce energy ezpenditure, airduct outer wall is also pasted with warming plate 8.Such as, thickness can be adopted to be the reinforcement aluminium foil of 30mm, and unit weight is 48kg/m
3centrifugally glass-wool plate makes warming plate 8.Airduct can be chosen as circular or square, is good to facilitate installation and to reduce energy consumption.Certainly, in order to reduce noise during duct ventilation further, fixing wall 1 and sleeve pipe 1 and the joint between floating wall 2 and sleeve pipe 2 42 are also filled out and are provided with damping sound-insulating felt 9.Damping sound-insulating felt 9 can select thickness to be 2mm, and face quality is 4kg/m
2b1 level nonflammable material make.
Continue below to describe with reference to figure 1 and Fig. 2 the method for construction that inventive pipeline wears double wall sound insulating structure in detail.
The method of construction of double wall sound insulating structure worn by pipeline, comprises the steps:
Step one: construct described fixing wall 1 and floating wall 2, and in fixing wall 1 and floating wall 2 reserved opening, and bury sleeve pipe 1 underground in fixing wall 1, in floating wall 2, bury sleeve pipe 2 42 underground, and sleeve pipe 1 and sleeve pipe 2 42 separate.
In order to not affect the mutual performance of fixing wall 1 and floating wall 2, and ensure wall 2 vertically movement in certain amplitude range of floating, fixing not connection between wall 1 and floating wall 2, but leave certain gap.Correspondingly, be sheathed on the sleeve pipe 1 of fixing wall 1 outer wall and be sheathed on the separate setting of sleeve pipe 2 42 of floating wall 2 outer wall, thus meeting sleeve pipe 2 42 and move with the synchronous vertical direction of floating wall 2.Usually, in order to save material and meet the second thimble assembly to the protection of pipeline 3, sleeve pipe 1 and sleeve pipe 2 42 all select thickness to be the metal sleeve of 1.1mm-1.3mm.Certainly, when casing thickness is 1.2mm, effect is better.
Step 2: by the first sleeve pipe 40 successively through sleeve pipe 1 and sleeve pipe 2 42, pipeline 3 is sheathed in the first sleeve pipe 40, and make metal hose joint 31 be positioned at one end of the close wall 2 that floats.
Usually; metal hose joint 31 is fixedly connected with the pipeline 3 of rigidity is airtight; when not only satisfied wall 2 vertical direction that floats moves; buffer protection function is played to the pipeline 3 being positioned at floating wall 2; and when meeting ventilation or water flowing in pipeline 3; can not seepage, thus ensure good ventilation or water flowing effect.
Step 3: respectively the first sound-absorbing material layer 51 is set between sleeve pipe 1 and the first sleeve pipe 40 and between sleeve pipe 2 42 and the first sleeve pipe 40.
By arranging the first sound-absorbing material layer 51, reducing noise when ventilation or water flowing in pipeline 3, thus meeting the noise reduction defening effect of building.
Continue with reference to figure 1, especially, when pipeline 3 is water pipes, the two ends of the first sound-absorbing material layer 51 and the second sound-absorbing material layer 52 arrange the first clay layer 61 shutoff respectively.By arranging the first clay layer 61, the first sound-absorbing material layer 51 can be separately fixed at the special position between sleeve pipe 1 and the first sleeve pipe 40 and between sleeve pipe 2 42 and the first sleeve pipe 40, thus reach good defening effect.In like manner, the second sound-absorbing material layer 52 is also fixed on specified position, thus reaches good defening effect.
In sum, double wall sound insulating structure worn by pipeline of the present invention, double wall comprises the fixing wall and floating wall that are set up in parallel successively, the wall that floats moves at vertical direction, pipeline is successively horizontal through fixing wall and floating wall, double wall sound insulating structure worn by described pipeline, comprise and be sheathed on the first sleeve pipe outside pipeline and the second thimble assembly successively, second thimble assembly is respectively separate sleeve pipe one and sleeve pipe two, sleeve pipe one is fixedly installed on fixing wall, sleeve pipe two is fixedly installed on floating wall, and sleeve pipe two and floating wall synchronizing moving; Lay the first sound-absorbing material layer between pipeline outer wall and first set inner tube wall, pipeline is provided with metal hose joint near the one end of the wall that floats.By arranging metal hose joint on pipeline, playing buffer function, when can prevent floating wall vertical direction from moving, being positioned at distortion or even the damage of the segment pipe floated within the walls.In addition, by laying sound-absorbing material between pipeline outer wall and the second thimble assembly inwall, noise when pipe ventilated or water flowing can be reduced.Further, by arranging the second sound-absorbing material layer between sleeve pipe two and floating wall, when floating wall can be made to move, contact for soft between sleeve pipe two with floating wall, thus it is fixing transaudient to stop between sleeve pipe two and floating wall, thus reduction noise.The method of construction of double wall sound insulating structure worn by pipeline, first the fixing wall of construction and floating wall, and at fixing wall and the reserved opening within the walls that floats, and buries sleeve pipe one within the walls underground fixing, buries sleeve pipe two within the walls underground floating, and sleeve pipe one and sleeve pipe two separate; Then by the first sleeve pipe successively horizontal through sleeve pipe one and sleeve pipe two, pipeline is sheathed in the first sleeve pipe, and makes metal hose joint be positioned near the one end of wall of floating; Finally between sleeve pipe one and the first sleeve pipe and between sleeve pipe two and the first sleeve pipe, fill the first sound-absorbing material layer respectively.This method of construction is easy, and can ensure that floating wall is when vertical direction moves, pipeline is not damaged.Meanwhile, because metal hose joint can be installed on pipeline in advance, do not affect the working procedure of original Pipe installing, can the reduction of erection time.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention.Any change that those skilled in the art does according to above-mentioned disclosure, modification, all belong to the protection domain of claim.
Claims (9)
1. double wall sound insulating structure worn by a pipeline, described double wall comprises the fixing wall and floating wall that are set up in parallel successively, described floating wall moves at vertical direction, described pipeline is successively horizontal through described fixing wall and described floating wall, it is characterized in that, double wall sound insulating structure worn by described pipeline, comprise and be sheathed on the first sleeve pipe outside described pipeline and the second thimble assembly successively, described second thimble assembly is respectively separate sleeve pipe one and sleeve pipe two, described sleeve pipe one is fixedly installed on described fixing wall, described sleeve pipe two is fixedly installed on described floating wall, and described sleeve pipe two and described floating wall synchronizing moving, lay the first sound-absorbing material layer between described pipeline outer wall and described first set inner tube wall, described pipeline is provided with metal hose joint near one end of described floating wall.
2. double wall sound insulating structure worn by pipeline as claimed in claim 1, it is characterized in that, is provided with grey mud layer between described first sleeve outer wall and described sleeve pipe one inwall, lay the second sound-absorbing material layer between described first sleeve outer wall and described sleeve pipe two inwall.
3. double wall sound insulating structure worn by pipeline as claimed in claim 1, and it is characterized in that, the length of described metal hose joint is 50mm-150mm.
4. double wall sound insulating structure worn by the pipeline as described in any one of claims 1 to 3, it is characterized in that, described pipeline is water pipe or airduct.
5. double wall sound insulating structure worn by pipeline as claimed in claim 4, and it is characterized in that, described airduct outer wall is also pasted with warming plate.
6. double wall sound insulating structure worn by pipeline as claimed in claim 5, and it is characterized in that, described first sound-absorbing material layer is rock wool layer.
7. the method for construction of double wall sound insulating structure worn by the pipeline as described in any one of claim 1 to 6, it is characterized in that, comprises the steps:
Step one: construct described fixing wall and described floating wall, and at described fixing wall and the described reserved opening within the walls that floats, and fixing bury sleeve pipe one within the walls underground described, bury described sleeve pipe two within the walls underground described floating, and described sleeve pipe one and described sleeve pipe two separate;
Step 2: by described first sleeve pipe successively horizontal through described sleeve pipe one and described sleeve pipe two, described pipeline is sheathed in described first sleeve pipe, and make described metal hose joint be positioned at one end of close described floating wall;
Step 3: respectively described first sound-absorbing material layer is set between described sleeve pipe one and described first sleeve pipe and between described sleeve pipe two and described first sleeve pipe.
8. the method for construction of double wall sound insulating structure worn by pipeline as claimed in claim 7, it is characterized in that, also comprise step 4, between described first sleeve outer wall and described sleeve pipe one inwall, be provided with grey mud layer, and lay the second sound-absorbing material layer between described first sleeve outer wall and described sleeve pipe two inwall.
9. the method for construction of double wall sound insulating structure worn by pipeline as claimed in claim 7 or 8, and it is characterized in that, described first sound-absorbing material layer in described water pipe and the two ends of described second sound-absorbing material layer arrange the first clay layer shutoff respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410524230.8A CN104455753B (en) | 2014-10-08 | 2014-10-08 | Pipeline through-double-layer-wall sound insulation structure for pipeline penetrating through two layers of walls and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410524230.8A CN104455753B (en) | 2014-10-08 | 2014-10-08 | Pipeline through-double-layer-wall sound insulation structure for pipeline penetrating through two layers of walls and construction method |
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| CN104455753A true CN104455753A (en) | 2015-03-25 |
| CN104455753B CN104455753B (en) | 2017-02-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104863280A (en) * | 2015-05-15 | 2015-08-26 | 江苏声望声学装备有限公司 | Through-wall sound insulation structure and mounting method thereof |
| CN106907544A (en) * | 2017-02-28 | 2017-06-30 | 中国十七冶集团有限公司 | A kind of outer wall of basement discards the method for blocking of pre-buried pipeline |
| CN107191255A (en) * | 2017-05-25 | 2017-09-22 | 马鞍山托恩康科技发展有限责任公司 | One kind sound insulation detecting system |
| CN110017404A (en) * | 2019-04-22 | 2019-07-16 | 上海建工一建集团有限公司 | Pipe sleeve fixing device for installing and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104863280A (en) * | 2015-05-15 | 2015-08-26 | 江苏声望声学装备有限公司 | Through-wall sound insulation structure and mounting method thereof |
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| CN110017404A (en) * | 2019-04-22 | 2019-07-16 | 上海建工一建集团有限公司 | Pipe sleeve fixing device for installing and its application method |
| CN110017404B (en) * | 2019-04-22 | 2024-02-13 | 上海建工一建集团有限公司 | Pipeline sleeve mounting and fixing device and application method thereof |
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|---|---|
| CN104455753B (en) | 2017-02-15 |
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