CN217175236U

CN217175236U - Building external enclosure structure air leakage point plugging system

Info

Publication number: CN217175236U
Application number: CN202220699627.0U
Authority: CN
Inventors: 杨振兴; 张博昊; 孙鸿志; 张思乔; 代智文
Original assignee: Beijing Urban Construction Sixth Group Co Ltd
Current assignee: Beijing Urban Construction Sixth Group Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-08-12
Anticipated expiration: 2032-03-28

Abstract

The utility model relates to the technical field of isolation, absorption or reflection of heat, sound or noise, and discloses an air leakage point plugging system of a building outer enclosure structure, which is used for plugging air leakage points on a passive ultra-low energy consumption building with an air tight layer; the air leakage points comprise peripheral gaps of the wall penetrating pipes, gaps at the edges of doors and windows, wall penetrating bolt holes and wall seams; the plugging system comprises an airtight water-resisting layer which is arranged indoors and plugged on the air leakage point, and a breathable water-resisting layer which is arranged outdoors and plugged on the air leakage point; the airtight water-proof layer is a waterproof air-proof film, is pasted on the air leakage point and is connected with the peripheral parts of the air leakage point in a bonding way. The utility model discloses in, through the mode of pasting waterproof air proof membrane, wall outer pasting waterproof ventilated membrane in the wall to the characteristics that combine different gaps set up the supporting component of two membranes, realized effectively sealed to all air leakage points of building, stopped the harm of infiltration air to the building.

Description

Building external enclosure structure air leakage point plugging system

Technical Field

The utility model relates to an isolated, absorption or reflection technical field to heat, sound or noise especially relates to a building outer surrounding protective structure air leakage point plugging system.

Background

The energy consumption of the building in the using process is mostly heating and refrigerating energy consumption, namely energy consumption for maintaining the temperature inside the building. The heat/cold loss of the building is reduced by adopting the technical means, and the energy consumption of heating and refrigerating of the building can be greatly reduced. Therefore, a passive type ultra-low energy consumption building is produced.

The passive ultra-low energy consumption building takes the year as a calculation period, the terminal energy consumption form is taken as a measurement index, and the heating and cooling energy consumption of the newly-built building is more than 70% lower than that of the building built according to the energy-saving standard (the house is in accordance with the energy-saving rate of 65%, and the public building is in accordance with the energy-saving rate of 50% as the basic number of the promotion).

To achieve the index of passive ultra-low energy consumption building, it is necessary to block all channels for heat exchange between the building and the outside, that is, not only heat preservation is required to block heat/cold loss caused by heat conduction, but also uncontrollable air exchange inside and outside the building (controllable ventilation by a fresh air system) is avoided to block heat/cold loss caused by heat convection.

Uncontrolled airflow through building structure cracks, fissures, and cavities is known as infiltration air. Problems arising from this part of the uncontrolled air exchange include:

firstly, loss of hot air;

secondly, the heating requirement and the heat load of the space are increased, and the primary energy consumption is increased;

thirdly, discharging more carbon dioxide;

creation of uncomfortable airflow, causing decay and deterioration of the interior of the building, creation of mold, fungus and related health problems.

Therefore, for passive ultra-low energy buildings, air-tight modifications to the building are required to eliminate the infiltration of air. But inevitably, many gaps are caused in the building due to the through-wall pipeline. However, the air tightness of the existing plugging technology, such as cement mortar plugging, does not reach the standard; if the structural adhesive is used for plugging, a plurality of cracks are too narrow to be applied.

SUMMERY OF THE UTILITY MODEL

The utility model provides a building external enclosure structure air leakage point plugging system.

The technical problem to be solved is that: the passive ultra-low energy consumption building needs to block all channels for heat exchange between the building and the outside, so that the building needs to be plugged, but the existing plugging technology cannot meet the requirements.

In order to solve the technical problem, the utility model adopts the following technical scheme: an air leakage point plugging system of a building external protective structure is used for plugging air leakage points on a passive ultra-low energy consumption building with an air-tight layer; the air leakage points comprise peripheral gaps of the wall penetrating pipes, gaps at the edges of doors and windows, wall penetrating bolt holes and wall seams; the plugging system comprises an airtight water-resisting layer which is arranged indoors and is plugged on the air leakage point, and a breathable water-resisting layer which is arranged outdoors and is plugged on the air leakage point;

the airtight water-proof layer is a waterproof air-proof film, is attached to the air leakage point and is connected with the peripheral parts of the air leakage point in a bonding mode.

Further, the air leakage point is the peripheral space of wall pipe, door and window border space, or wall seam, the ventilative water barrier is waterproof ventilated membrane, waterproof ventilated membrane pastes on the air leakage point and is connected with the peripheral part splice of air leakage point.

Further, the air leakage points are peripheral gaps of the wall penetrating pipe, a wall penetrating heat-insulating layer wraps the outside of the section of the wall penetrating pipe located in the wall body, an inner decorative layer is arranged on the surface of the inner side of the wall body, and an outer heat-insulating layer is arranged on the surface of the outer side of the wall body; the airtight waterproof layer is arranged around the wall penetrating pipe, attached to the wall body and the wall penetrating pipe, and the part attached to the wall body is embedded at the bottom of the inner decoration layer; the breathable water-proof layer is arranged around the wall penetrating pipe in a circle, attached to the wall body and the wall penetrating pipe, and the part attached to the wall body is embedded at the bottom of the outer heat-insulation layer.

Furthermore, the wall pipe is a water pipe or a gas pipe, the wall heat-insulating layer is heat-insulating cotton, the wall heat-insulating layer crosses the inner decoration layer and extends indoors, and the two parts of the airtight water-proof layer, which are positioned on the wall pipe and the wall body, are connected into a whole after penetrating through the wall heat-insulating layer.

Further, the position that the wall pipe worn out outer heat preservation is equipped with the inflation seal ring, the inflation seal ring is partly buried in outer heat preservation, and exposes the partial cover outside outer heat preservation and is equipped with the silica gel ring.

Further, the through-wall pipe is a wire pipe, the through-wall heat-insulating layer is made of polyurethane foam, the polyurethane foam for preventing a cold bridge from being formed in a gap between the wire and the pipe wall is plugged in the two ends of the wire pipe, and the openings of the two ends of the wire pipe are plugged through silicone sealant.

Furthermore, the wall penetrating pipe is a roof exhaust pipeline, and the wall penetrating heat insulation layer is a heat insulation mortar layer.

Further, the air leakage points are through-wall bolt holes, the breathable water-resisting layer is a double-layer waterproof coating layer, and cement mortar is plugged in the through-wall bolt holes.

The utility model relates to a building outer surrounding protection structure air leakage point plugging system compares with prior art, has following beneficial effect:

in the utility model, the mode of pasting the waterproof air-isolating film in the wall and pasting the waterproof air-permeable film outside the wall is combined with the characteristics of different gaps to arrange the matched components of the two films, thereby realizing the effective sealing of all air leakage points of the building and avoiding the harm of the air leakage to the building;

meanwhile, the waterproof air-isolating film is pasted in the wall, and the waterproof breathable film is pasted outside the wall, so that compared with the method of only pasting the waterproof air-isolating film, the film is prevented from being cracked or falling off due to the effect of indoor and outdoor pressure difference on one film; compared with the waterproof and air-proof films which are pasted on two sides, the film is prevented from cracking or falling off due to air expansion or contraction between the two films.

Drawings

FIG. 1 is a schematic structural diagram of a water pipe/gas pipe peripheral gap plugging device;

FIG. 2 is a schematic structural diagram for blocking the peripheral gap of the line pipe;

FIG. 3 is a schematic structural diagram of a roof exhaust duct when a peripheral gap is sealed;

FIG. 4 is a schematic view of a through-wall bolt hole plugging structure;

FIG. 5 is a schematic view of the structure of the roof smoke duct with enhanced sealing effect of the peripheral gap;

the building comprises, by weight, 1-an airtight water-stop layer, 2-a breathable water-stop layer, 3-a wall-penetrating pipe, 31-a wall-penetrating heat-insulating layer, 4-a wall body, 41-an outer heat-insulating layer, 42-an inner decorative layer and 5-an expansion water-stop ring.

Detailed Description

Note that the wall body 4 in the present application includes walls of building side walls, ceilings, and roofs.

An air leakage point plugging system of a building external protective structure is used for plugging air leakage points on a passive ultra-low energy consumption building with an air-tight layer; the air leakage points comprise peripheral gaps of the wall penetrating pipes 3, gaps at the edges of doors and windows, wall penetrating bolt holes and wall seams; the plugging system comprises an airtight water-resisting layer 1 which is arranged indoors and plugged on an air leakage point, and a breathable water-resisting layer 2 which is arranged outdoors and plugged on the air leakage point;

the airtight water-proof layer 1 is a waterproof air-proof film, is pasted on the air leakage point and is connected with the peripheral parts of the air leakage point in a bonding way.

The air leakage point is a gap at the periphery of the through-wall pipe 3, a gap at the edge of a door or window or a wall seam, the breathable water-proof layer 2 is a waterproof breathable film, and the waterproof breathable film is attached to the air leakage point and is connected with the peripheral part of the air leakage point in an adhesive manner.

Namely, the waterproof air-proof film is pasted in the wall, and the waterproof air-permeable film is pasted outside the wall. If only one layer of waterproof air-isolating film is adhered, the indoor and outdoor pressure difference acts on one layer of film, so that the waterproof air-isolating film is easy to crack or fall off; if the two sides are pasted with the waterproof air-isolating films, an air bag can be formed between the two films, and when the temperature changes, the volume of the air bag can also change, so that the waterproof air-isolating films on the two sides are cracked or fall off.

The main reason why the waterproof air-barrier film and the waterproof air-permeable film are used is that if structural adhesive is used for sealing, the sealant cannot be injected into the gap, and if the sealant is injected outside, the installation of the outer insulating layer 41 and the inner decorative layer 42 is affected.

The air leakage points are peripheral gaps of the wall penetrating pipes 3, the wall penetrating heat-insulating layers 31 wrap the outer sections of the wall penetrating pipes 3 positioned in the wall body 4, the inner side surface of the wall body 4 is provided with an inner decorative layer 42, and the outer side surface of the wall body is provided with an outer heat-insulating layer 41; the airtight waterproof layer 1 is arranged around the wall penetrating pipe 3, attached to the wall body 4 and the wall penetrating pipe 3, and the part attached to the wall body 4 is embedded at the bottom of the inner decoration layer 42; the breathable water-resisting layer 2 is arranged around the wall penetrating pipe 3, attached to the wall body 4 and the wall penetrating pipe 3, and the part attached to the wall body 4 is embedded at the bottom of the external heat-insulating layer 41.

As shown in fig. 1, the wall pipe 3 is a water pipe or a gas pipe, the wall insulation layer 31 is insulation cotton, the wall insulation layer 31 extends indoors beyond the inner decoration layer 42, and the two parts of the airtight and waterproof layer 1 located on the wall pipe 3 and the wall body 4 penetrate through the wall insulation layer 31 and are connected into a whole. That is, if the wall-through insulation layer 31 extends indoors to achieve better cold bridge breaking effect, the waterproof and air-proof film needs to be disposed under the wall-through insulation layer 31 and attached to the body of the wall-through pipe 3.

The position that wall pipe 3 worn out outer heat preservation 41 is equipped with inflation seal ring 5, and inflation seal ring 5 partly buries in outer heat preservation 41, and exposes the partial cover outside outer heat preservation 41 and is equipped with the silica gel ring.

As shown in fig. 2, the through-wall pipe 3 is a line pipe, the through-wall insulation layer 31 is made of polyurethane foam, the polyurethane foam for preventing the gap between the wire and the pipe wall from forming a cold bridge is plugged inside the two ends of the line pipe, and the openings at the two ends of the line pipe are plugged by silicone sealant. The position that wall pipe 3 worn out outer heat preservation 41 is equipped with inflation seal ring 5, and inflation seal ring 5 partly buries in outer heat preservation 41, and exposes the partial cover outside outer heat preservation 41 and is equipped with the sealed glue of silicone.

The wire tube is different from material pipelines such as a water pipe, a fuel gas pipe and the like, and both ends of the wire tube are exposed to air, so that air leakage is caused, and therefore sealing and thermal bridge breaking treatment are required to be carried out in the wire tube.

As shown in fig. 3, the wall penetrating pipe 3 is a roof exhaust pipeline, and the wall penetrating heat insulation layer 31 is a heat insulation mortar layer.

As shown in fig. 4, the air leakage points are through-wall bolt holes, the air-permeable and water-proof layer 2 is a double-layer waterproof coating layer, and cement mortar is plugged in the through-wall bolt holes.

As shown in fig. 5, the gap around the smoke duct on the roof is well sealed and is not easy to leak, because the smoke duct has a pile of components for improving air tightness; for safety reasons, however, the sealing is also enhanced here by means of a waterproof gas barrier film.

Note that, when the waterproof and air-permeable film is attached, the width of the portion on the wall body 4 needs to be not less than 100mm and the width of the portion on the wall pipe 3 needs to be not less than 50mm because the attachment effect on the wall body 4 is not good. But the wall gap can be treated according to the wall penetrating pipe 3 due to wide range.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. An air leakage point plugging system of a building external protective structure is used for plugging air leakage points on a passive ultra-low energy consumption building with an air-tight layer; the method is characterized in that: the air leakage points comprise peripheral gaps of the wall penetrating pipes (3), gaps at the edges of doors and windows, wall penetrating bolt holes and wall seams; the plugging system comprises an airtight water-resisting layer (1) which is arranged indoors and plugged on an air leakage point, and a breathable water-resisting layer (2) which is arranged outdoors and plugged on the air leakage point;

the airtight water-proof layer (1) is a waterproof air-proof film, is attached to the air leakage point and is connected with the peripheral parts of the air leakage point in a bonding mode.

2. The building envelope air leak point plugging system of claim 1, wherein: the air leakage point is a through-wall pipe (3) peripheral gap, a door and window edge gap or a wall seam, the breathable water-resisting layer (2) is a waterproof breathable film, and the waterproof breathable film is attached to the air leakage point and is connected with the air leakage point peripheral component in a splicing manner.

3. The building envelope air leak point plugging system of claim 2, wherein: the air leakage points are peripheral gaps of the wall penetrating pipes (3), the wall penetrating heat-insulating layers (31) are wrapped outside the sections of the wall penetrating pipes (3) located in the wall body (4), the inner side surface of the wall body (4) is provided with an inner decorative layer (42), and the outer side surface of the wall body is provided with an outer heat-insulating layer (41); the airtight waterproof layer (1) is arranged around the wall penetrating pipe (3) in a circle, attached to the wall body (4) and the wall penetrating pipe (3), and the part attached to the wall body (4) is embedded at the bottom of the inner decoration layer (42); the breathable water-resisting layer (2) is arranged around the wall penetrating pipe (3) in a circle, attached to the wall body (4) and the wall penetrating pipe (3), and the part attached to the wall body (4) is buried at the bottom of the external heat-insulating layer (41).

4. The building envelope air leak point plugging system of claim 3, wherein: the wall penetrating pipe (3) is a water pipe or a gas pipe, the wall penetrating heat insulation layer (31) is heat insulation cotton, the wall penetrating heat insulation layer (31) crosses the inner decoration layer (42) and extends indoors, and the two parts of the airtight water separation layer (1) located on the wall penetrating pipe (3) and the wall body (4) penetrate through the wall penetrating heat insulation layer (31) and are connected into a whole.

5. The building envelope air leak point plugging system of claim 4, wherein: the position that wall pipe (3) worn out outer heat preservation (41) is equipped with inflation seal ring (5) by the cover, inflation seal ring (5) are partly buried in outer heat preservation (41), and expose the partial cover outside outer heat preservation (41) and are equipped with the silica gel ring.

6. The building envelope air leak point plugging system of claim 3, wherein: the wall penetrating pipe (3) is a wire pipe, the wall penetrating heat insulation layer (31) is made of polyurethane foam, the polyurethane foam for preventing a gap between a wire and a pipe wall from forming a cold bridge is plugged in the two ends of the wire pipe, and the opening of the two ends of the wire pipe is plugged through silicone sealant.

7. The building envelope air leak point plugging system of claim 3, wherein: the wall penetrating pipe (3) is an exhaust pipeline of a roof, and the wall penetrating heat insulation layer (31) is a heat insulation mortar layer.

8. The building envelope air leak point plugging system of claim 1, wherein: the air leakage points are wall-through bolt holes, the breathable water-resisting layer (2) is a double-layer waterproof coating layer, and cement mortar is plugged in the wall-through bolt holes.