Passive house non-thermal bridge high air tightness outer wall pipe wall penetrating structure and construction method

Abstract

The application discloses a passive house non-thermal-bridge high-air-tightness outer wall pipe wall-penetrating structure, which comprises a wall body and an insulation layer, and is characterized in that the wall-penetrating pipe comprises an inner pipe and an outer pipe, the inner pipe comprises heat insulation pipe one penetrating into the wall body and heat insulation pipe two penetrating into the insulation layer, the outer pipe comprises a guide pipe located in the middle and sealing pipes located on both sides of the guide pipe, the sealing pipes and the guide pipe are connected through flanges, sealing structures and limiting structures are arranged between the two flanges, the sealing structures are suitable for plugging the gap between the two flanges, the outer pipe is suitable for being horizontally installed in the wall body through the limiting structures, the opposite ends of the heat insulation pipe one and the heat insulation pipe two are provided with plugging end heads, and the two plugging end heads are filled with heat insulation sealing glue. The plugging end heads are extruded by the heat insulation sealing glue, so that the plugging end heads on the plugging end heads and the sealing pipes are extruded to form an air-tightness partition structure, meanwhile, the heat insulation sealing glue can perform heat insulation and partition treatment on the inner layer pipe, and the outer pipe can realize the waterproof effect while ensuring that the inner layer pipe has high air tightness.

Description

Technical Field

[0001] This invention relates to a passive building exterior wall pipe penetration sealing structure, specifically a passive house thermal bridge-free, high airtight exterior wall pipe penetration structure and construction method. Background Technology

[0002] Passive houses are integrated buildings using various technologies that maximize the use of renewable energy to ensure that the total primary energy consumption does not exceed 120 kWh / (m²·year). This low energy consumption standard is achieved through highly insulated and soundproof building walls and renewable energy sources; therefore, passive houses require excellent insulation and airtightness.

[0003] When pipes pass through reinforced concrete shear walls in passive buildings, holes are typically pre-drilled in the wall, sleeves are installed, and a polyurethane insulation layer is placed between the sleeve and the pipe. Passive house wall pipe penetration structures mostly employ a double-layer structure (sleeve and pipe), such as CN215172854U—a type of wall pipe installation structure that uses a threaded structure for sealing to ensure airtightness. However, due to the susceptibility to machining errors during the threaded structure processing, although it theoretically guarantees airtightness, in practical use, especially for passive houses requiring high airtightness, it cannot guarantee consistently high airtightness. Therefore, a passive house wall penetration structure suitable for high airtightness is needed. Summary of the Invention

[0004] To address the problem that existing double-layer pipe thread structures in through-wall construction cannot ensure high airtightness, the inventors, through practical experience, have developed the following solution to solve this problem:

[0005] A passive house with a thermal bridge-free, high-airtightness external wall pipe penetration structure includes a wall and an insulation layer. The penetration pipe comprises an inner pipe and an outer pipe. The inner pipe includes a first insulation pipe inserted into the wall and a second insulation pipe inserted into the insulation layer. The outer pipe includes a guide pipe in the middle and sealing pipes on both sides of the guide pipe. The sealing pipe and the guide pipe are connected by flanges, and a sealing structure and a limiting structure are arranged between the two flanges. The sealing structure is suitable for sealing the gap between the two flanges, and the outer pipe is suitable for horizontal installation inside the wall through the limiting structure. A sealing end is installed at one opposite end of the first and second insulation pipes, and thermal insulation sealant is filled between the two sealing ends. The thermal insulation sealant presses against the sealing ends, forcing the sealing ends and the sealing pipe to press against each other to form an airtight partition structure. Simultaneously, the thermal insulation sealant provides thermal insulation for the inner pipe, while the outer pipe ensures high airtightness of the inner pipe and achieves waterproofing.

[0006] Preferably, the sealing structure includes a groove installed on the opposite side of the flange, an airbag installed inside the groove, and an air nozzle suitable for supplying air to the airbag on the flange, with a one-way valve installed at the air nozzle. The one-way valve at the air nozzle allows for one-way air supply to the airbag, ensuring a high-strength, airtight seal and preventing air leakage.

[0007] Preferably, the inner and outer walls of the first and second heat insulation pipes, as well as the inner wall of the outer pipe, are all equipped with waterproof and airtight membranes. The use of waterproof and airtight membranes further ensures airtight sealing.

[0008] Preferably, the guide tube is equipped with a glue applicator and a discharge port, with the discharge port located at the top of the guide tube. A one-way valve is installed at the glue applicator, and the discharge port is equipped with an exhaust / blocking structure. The exhaust / blocking structure includes two PE membranes. When the two PE membranes are located inside the guide tube and their outer walls adhere to each other, it is a blocking structure. When the two PE membranes are located outside the guide tube and their inner walls adhere to each other, it is an exhaust structure.

[0009] Preferably, the limiting structure includes connecting grooves arranged on opposite sides of the two flanges, with positioning pins installed in the connecting grooves, and a hanger suitable for installation on the wall reinforcement installed between the two positioning pins at corresponding positions.

[0010] Preferably, the end of the sealing tube away from the guide tube is provided with a tapering structure.

[0011] Compared to traditional through-wall structures, this invention achieves the following advantages: A waterproof and airtight membrane ensures high airtightness; thermal insulation sealant creates a thermal break between insulation pipes one and two, ensuring thermal insulation performance; and mutual compression of the sealing ends effectively controls the airtight seal between the sealing ends and the sealing pipe, ensuring a tight fit. The sealing pipe's closing structure also provides waterproofing. In use, the sealing pipe and guide pipe assembly is connected and fixed to the wall reinforcement using hangers. The assembly is sealed via a sealing structure (mutual compression between the airbags after inflation). During sealant injection into the guide pipe, a sealing membrane is installed inside the inner pipe, forming a wrap around the inside. Sealant is injected through a nozzle, and the switching between the venting and sealing structures completes the filling and sealing process, ensuring thermal insulation and high airtightness. The pendant in this embodiment is as shown in the figure, with a hook-and-loop part and an adjustable overall length.

[0012] A construction method for a passive house with a thermal bridge-free, highly airtight external wall pipe through-wall structure, the construction steps of which are as follows:

[0013] First, assemble the through-wall assembly: bond a waterproof and airtight membrane to the inner wall of the guide tube and the sealing tube, insert the ends of the insulation tube 1 and insulation tube 2 without the sealing structure into the corresponding sealing tubes, connect the guide tube and the sealing tube through the flange, install the hanger at the same time as the flange connection, and blow the corresponding airbag into the air nozzle on the flange to seal the flange gap.

[0014] Secondly, pre-reserved holes are made in the insulation layer structure. The size of the pre-reserved holes is no more than 2mm larger than the outer diameter of the second insulation pipe. The external wall steel bars are tied, and the guide pipe is installed and fixed by connecting the hangers and the nearest steel bars during the process. The insulation layer structure is hoisted horizontally to ensure that the second insulation pipe is horizontally inserted into the pre-reserved holes. Then, the steel mesh and steel bars on the insulation layer structure are tied and fixed. The glue injection equipment is connected to the outside of the pipe at the glue nozzle, and the two PE films are in the venting state. The sealing cylinder membrane is placed inside the first and second insulation pipes and filled with water or air. The glue injection equipment is used to apply glue to the area between the first and second insulation pipes. When the heat insulation sealant enters the two PE films, the glue injection is stopped and the glue tube is pulled out. Then, the glue stick is used to push the two PE films into the inside of the guide pipe, and the outer walls of the two PE films are attracted to each other under the combined action of electrostatic force and heat insulation sealant.

[0015] Next, install corresponding templates on the inside of the wall and the outside of the insulation layer. Install the waterproof and air-tight membrane of the first insulation pipe on the inside of the template with tape, and bond the waterproof and air-tight membrane of the second insulation pipe to the outer wall of the insulation layer. Then pour the concrete of the wall.

[0016] Finally, after the concrete reaches a certain strength, the formwork and sealing membrane are removed, and the airtight layer on the inner side of the wall and the thermal insulation airtight protective layer, thermal insulation structural protective layer and decorative layer on the outer wall are constructed.

[0017] Preferably, the hanger includes a rotating body that rotatably engages with a positioning pin. The end of the rotating body is provided with a hanging groove. A rotatably arranged baffle is installed at the bottom of the hanging groove. The baffle rotates relative to the rotating body and can slide relative to it. A guide groove is installed on the baffle. A sliding body rotatably arranged with the rotating body is installed inside the guide groove, and a torsion spring is installed at the rotation node of the sliding body. A spring that initiates the return of the sliding body to its original position is installed inside the guide groove. A locking block is installed at the bottom of the hanging groove, which is suitable for limiting the maximum outward rotation angle of the baffle. A cam is installed on the side of the baffle. An avoidance groove is provided at the bottom of the hanging groove, and a limiting block suitable for cam adaptation is installed inside the avoidance groove. By rotating the splice slot towards the side closer to the rebar, the rebar will apply pressure to the baffle after rotation, causing it to move inward towards the splice slot. The limiting block will act on its cam, causing the baffle to move outward relative to the splice slot during rotation. When the bottom of the rebar passes the top of the baffle, the torsion spring and spring will act on the baffle to reset it. Finally, the bottom of the baffle and the locking block will lock and match, at which point the rebar will be tightly clamped in the splice slot. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the through-wall structure of the present invention.

[0019] Figure 2 This is a structural diagram of the through-wall structure of the present invention.

[0020] Figure 3 This is a cross-sectional view of the outer tube in the through-wall structure of the present invention.

[0021] Figure 4 for Figure 3 Connection diagram of the middle sealing pipe and guide pipe (exhaust state).

[0022] Figure 5 for Figure 3 Connection diagram of the sealing tube and guide tube (sealing state).

[0023] Figure 6 This is a cross-sectional view of the hanging component in the through-wall structure of the present invention.

[0024] Figure 7 This is a schematic diagram of the baffle plate in the hanging component of the through-wall structure of the present invention. Detailed Implementation

[0025] Example: Figures 1 to 5 As shown, a passive house with a thermal bridge-free, high airtightness external wall pipe through-wall structure includes a wall 2, an insulation layer 3, and a through-wall pipe 3. The through-wall pipe 3 includes an inner pipe 31 and an outer pipe 32. The inner pipe 31 includes a first insulation pipe 311 inserted inside the wall 2 and a second insulation pipe 312 inserted inside the insulation layer 3. The outer pipe 32 includes a guide pipe 321 located in the middle and sealing pipes 322 located on both sides of the guide pipe 321. The end of the sealing pipe 322 away from the guide pipe 321 is provided with a closing structure. A caulking nozzle 325 and a discharge port are installed on the guide tube 321, with the discharge port located at the top of the guide tube 321. A one-way valve is installed at the caulking nozzle 325, and an exhaust / sealing structure 326 is installed at the discharge port. The exhaust / sealing structure 326 includes two PE membranes. When the two PE membranes are located inside the guide tube 321 and their outer walls adhere to each other, it is a sealing structure. When the two PE membranes are located outside the guide tube 321 and their inner walls adhere to each other, it is an exhaust structure. The sealing tube 322 and the guide tube 321 are connected by a flange.

[0026] A sealing structure and a limiting structure are provided between the two flanges. The sealing structure is suitable for sealing the gap between the two flanges. The sealing structure includes a groove 323 installed on the opposite side of the flanges. An air bladder 324 is installed inside the groove 323. An air nozzle suitable for supplying air to the air bladder 324 is provided on the flange, and a one-way valve is installed at the air nozzle. The outer pipe 32 is suitable for horizontal installation inside the wall 2 through the limiting structure. A sealing end 313 is installed at the opposite end of the heat insulation pipe 1 311 and the heat insulation pipe 2 312. The space between the two sealing ends 313 is filled with heat insulation sealant 33. The limiting structure includes a connecting groove provided on the opposite side of the two flanges. A positioning pin is installed in the connecting groove. A hanger 327 suitable for installation on the steel reinforcement of the wall 2 is installed between the two corresponding positioning pins. The inner and outer walls of the heat insulation pipe 1 311 and the heat insulation pipe 2 312, as well as the inner wall of the outer pipe 32, are all equipped with a waterproof and airtight membrane 314.

[0027] The waterproof and airtight membrane 314 ensures the structure has high airtightness. The heat insulation sealant 33 forms a broken bridge structure between the heat insulation pipe 311 and the heat insulation pipe 312, ensuring the thermal insulation performance of the structure. At the same time, by squeezing the sealing end 313, the waterproof and airtight membrane 314 between the sealing end 313 and the sealing pipe 322 is effectively controlled to be in a tight fit, ensuring airtight separation. The sealing pipe 322's closing structure also provides a waterproof effect. In use, the assembly of the sealing tube 322 and the guide tube 321 needs to be connected and fixed to the reinforcing steel of the wall 1 via the hanger 327. The assembly of the sealing tube 322 and the guide tube 321 is sealed by the sealing structure (the mutual compression between the airbags after the airbags are inflated). When injecting glue into the guide tube 321, a sealing membrane is installed inside the inner tube. The sealing membrane forms a wrap on the inside, and glue is injected into the inside through the glue nozzle. The full filling and sealing are completed by switching between the venting and sealing structures of the venting / sealing structure 326, ensuring the heat preservation effect and high airtightness. The hanger 327 in this embodiment is as shown in the figure, with a hook part and an adjustable overall length.

[0028] A construction method for a passive house with a thermal bridge-free, highly airtight external wall pipe through-wall structure, the construction steps of which are as follows:

[0029] First, assemble the wall-penetrating components: bond a waterproof and airtight membrane 314 to the inner wall of the guide tube 321 and the sealing tube 322, insert the ends of the insulation tube 1 311 and the insulation tube 2 312 without the sealing structure into the corresponding sealing tube 322, connect the guide tube 321 and the sealing tube 322 through a flange, install the hanger 327 at the same time as the flange is connected, and blow the corresponding air bag 324 into the air nozzle on the flange to seal the flange gap;

[0030] Secondly, pre-drilled holes are made in the insulation layer 3 structure. The size of the pre-drilled holes is no more than 2mm larger than the outer diameter of the second insulation pipe 312. The external wall steel bars are tied, and the guide pipe 321 is installed and fixed by connecting the hanger 327 and the nearest steel bars. The insulation layer 3 structure is then horizontally hoisted to ensure that the second insulation pipe 312 is horizontally inserted into the pre-drilled holes. The steel mesh and steel bars on the insulation layer 3 structure are then tied and fixed. An external glue injection device is connected through a pipe at the glue nozzle 325, and the two PE films are in the venting junction. In the structural state, a sealing cylinder membrane is installed inside the heat insulation tube 311 and the heat insulation tube 312, and the sealing cylinder membrane is filled with water or air. The glue injection equipment applies glue to the area between the heat insulation tube 311 and the heat insulation tube 312. When the heat insulation sealant 33 enters the two PE films, the glue application is stopped and the glue tube is pulled out. Then, the glue stick pushes the two PE films into the interior of the guide tube 321, and the outer walls of the two PE films are attracted to each other under the combined action of electrostatic force and heat insulation sealant 33.

[0031] Next, install corresponding templates on the inner side of wall 2 and the outer side of insulation layer 3, install the waterproof and air-tight membrane 314 of insulation pipe 1 311 on the inner side of the template with tape, and bond the waterproof and air-tight membrane 314 of insulation pipe 2 312 to the outer wall of insulation layer 3, and pour concrete for wall 2.

[0032] Finally, after the concrete reaches a certain strength, the formwork and sealing membrane are removed, and the airtight layer on the inner side of the construction wall 2 and the thermal insulation airtight protective layer, thermal insulation structural protective layer and decorative layer of the outer wall are constructed.

[0033] The following improvements are made based on the above embodiments, such as... Figures 6 to 7As shown, the hanging component 327 includes a rotating body 3271 that rotatably engages with a positioning pin. A hanging groove 3273 is provided at the end of the rotating body 3271. A rotatably arranged baffle 3274 is installed at the bottom of the hanging groove 3273. The baffle 3274 rotates relative to the rotating body 3271 and can slide relative to it. A guide groove 3275 is installed on the baffle 3274. A sliding body 3276 that rotatably engages with the rotating body 3271 is installed inside the guide groove 3275. A torsion spring is installed at the rotation node of the slider 3276, and a spring that starts to return the slider 3276 to its original position is installed in the guide groove 3275. A locking block 3277 is installed at the bottom of the hook groove 3273. The locking block 3277 is suitable for limiting the maximum external rotation angle of the baffle 3274. A cam 3278 is installed on the side of the baffle 3274. A clearance groove is provided at the bottom of the hook groove 3273, and a limit block 3279 suitable for matching the cam 3278 is installed in the clearance groove. By rotating the mounting groove 3272 towards the side closer to the reinforcing bar, the reinforcing bar will apply pressure to the baffle 3274 after rotation, causing it to move inward towards the mounting groove 3272. The limiting block 3279 will act on its cam 3278 to make the baffle 3274 move outward relative to the mounting groove 3273 during rotation. When the bottom of the reinforcing bar passes the top of the baffle 3274, the torsion spring and spring will act on the baffle 3274 to reset. Finally, the bottom of the baffle 3274 and the locking block 3277 are locked and matched. At this time, the reinforcing bar will be tightly clamped in the mounting groove 3273.

Claims

1. A passive house thermal bridge-free, high airtightness external wall pipe through-wall structure, comprising a wall, an insulation layer, and a through-wall pipe, characterized in that, The through-wall pipe includes an inner pipe and an outer pipe. The inner pipe includes a heat insulation pipe 1 inserted inside the wall and a heat insulation pipe 2 inserted inside the insulation layer. The outer pipe includes a guide pipe located in the middle and sealing pipes located on both sides of the guide pipe. The sealing pipe and the guide pipe are connected by flanges, and a sealing structure and a limiting structure are arranged between the two flanges. The sealing structure is suitable for sealing the gap between the two flanges. The outer pipe is suitable for horizontal installation inside the wall through the limiting structure. A sealing end is installed at one end of the heat insulation pipe 1 and the heat insulation pipe 2 opposite to each other, and heat insulation sealant is filled between the two sealing ends. The inner and outer walls of the heat insulation pipe 1 and heat insulation pipe 2, as well as the inner wall of the outer pipe, are all equipped with waterproof and air-tight membranes. The guide tube is equipped with a glue applicator and a discharge port, with the discharge port located at the top of the guide tube. A one-way valve is installed at the glue applicator, and the discharge port is equipped with an exhaust / blocking structure. The exhaust / blocking structure includes two PE membranes. When the two PE membranes are located inside the guide tube and their outer walls adhere to each other, it is a blocking structure. When the two PE membranes are located outside the guide tube and their inner walls adhere to each other, it is an exhaust structure.

2. The passive house thermal bridge-free, high airtightness external wall pipe penetration structure according to claim 1, characterized in that, The sealing structure includes a groove installed on the opposite side of the flange, an air bladder installed inside the groove, and an air nozzle suitable for supplying air to the air bladder on the flange, with a one-way valve installed at the air nozzle.

3. The passive house thermal bridge-free, high airtightness external wall pipe penetration structure according to claim 2, characterized in that, The limiting structure includes connecting grooves arranged on opposite sides of two flanges, with positioning pins installed in the connecting grooves, and a hanger suitable for installation on the wall reinforcement installed between the two positioning pins at corresponding positions.

4. A passive house thermal bridge-free, high airtightness external wall pipe through-wall structure according to any one of claims 1 to 3, characterized in that, The end of the sealing tube away from the guide tube is provided with a tapering structure.

5. The construction method of a passive house with a thermal bridge-free, high airtightness external wall pipe penetration structure according to claim 3, characterized in that, The construction steps are as follows: First, assemble the through-wall assembly: bond a waterproof and airtight membrane to the inner wall of the guide tube and the sealing tube, insert the ends of the insulation tube 1 and insulation tube 2 without the sealing structure into the corresponding sealing tubes, connect the guide tube and the sealing tube through the flange, install the hanger at the same time as the flange connection, and blow the corresponding airbag into the air nozzle on the flange to seal the flange gap. Secondly, pre-reserved holes are made in the insulation layer structure. The size of the pre-reserved holes is no more than 2mm larger than the outer diameter of the second insulation pipe. The external wall steel bars are tied, and the guide pipe is installed and fixed by connecting the hangers and the nearest steel bars during the process. The insulation layer structure is hoisted horizontally to ensure that the second insulation pipe is horizontally inserted into the pre-reserved holes. Then, the steel mesh and steel bars on the insulation layer structure are tied and fixed. The glue injection equipment is connected to the outside of the pipe at the glue nozzle, and the two PE films are in the venting state. The sealing cylinder membrane is placed inside the first and second insulation pipes and filled with water or air. The glue injection equipment is used to apply glue to the area between the first and second insulation pipes. When the heat insulation sealant enters the two PE films, the glue injection is stopped and the glue tube is pulled out. Then, the glue stick is used to push the two PE films into the inside of the guide pipe, and the outer walls of the two PE films are attracted to each other under the combined action of electrostatic force and heat insulation sealant. Next, install corresponding templates on the inside of the wall and the outside of the insulation layer. Install the waterproof and air-tight membrane of the first insulation pipe on the inside of the template with tape, and bond the waterproof and air-tight membrane of the second insulation pipe to the outer wall of the insulation layer. Then pour the concrete of the wall. Finally, after the concrete reaches a certain strength, the formwork and sealing membrane are removed, and the airtight layer on the inner side of the wall and the thermal insulation airtight protective layer, thermal insulation structural protective layer and decorative layer on the outer wall are constructed.

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