CN211317651U

CN211317651U - Building exterior window airtightness testing system

Info

Publication number: CN211317651U
Application number: CN201921675161.5U
Authority: CN
Inventors: 张明荣
Original assignee: Suzhou Wujiang Southeast Building Inspection Co ltd
Current assignee: Suzhou Wujiang Southeast Building Inspection Co ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-08-21
Anticipated expiration: 2029-10-09

Abstract

The utility model relates to an airtight test system of building exterior window, including sealed frame, pressure air supply portion and pressure differential test portion. The sealing frame is fixed on the wall body and is opposite to the position corresponding to the outer window so as to form a sealing cavity. The pressure air supply unit includes an air supply pipe, a blower, a flow rate regulating valve, a flow meter, and a check valve. The air supply pipe is communicated with the air outlet of the blower, and the outlet end of the air supply pipe is communicated with the sealing cavity. The differential pressure test part comprises an exhaust pipe and a differential pressure measuring instrument. One end of the exhaust pipe is communicated with the sealed cavity, and the other end of the exhaust pipe is communicated with the atmosphere. The differential pressure gauge is disposed on the exhaust pipe. In addition, the sealing frame also comprises a wind shield which is fixed in the sealing cavity and is arranged right in front of the outlet end of the air supply pipe. Therefore, the outlet end of the air supply pipe can be effectively shielded, so that the pressure air is divided to a certain extent, the impact force on the adhesive tape is reduced to a certain extent, the adhesive tape is prevented from falling off, and the smooth proceeding of the test process is ensured.

Description

Building exterior window airtightness testing system

Technical Field

The utility model relates to a building detection technology field especially relates to an airtight test system of building exterior window.

Background

The quality of the air seal of the building external window has great influence on the energy-saving performance of the building, and the air seal refers to the capability of preventing air from permeating into a room under the action of indoor and outdoor pressure difference of the building external window in a closed state. It is known that the outer window is not in an absolute sealing state, and a certain degree of permeation phenomenon is generated at the mosaic gap of the glass and the splicing gap of the sectional material, so that cold air or hot air enters the room, and heating or cooling energy consumption is increased.

In the prior art, the air tightness test system for the exterior window of the building is mainly composed of a sealing frame, a pressure air supply part and a differential pressure test part (as shown in fig. 1). Before formal tightness test is carried out, firstly, an adhesive tape is needed to be used for sealing a glass embedding gap, a section splicing gap and the like, then a sealing frame is fixed on a wall body, then, pressure air is supplied to a sealing cavity by means of an air supply part until the pressure in the sealing cavity reaches a standard value, and then the adhesive tape is torn off. And (3) sequentially detecting the permeation quantities of the system when the internal and external pressure differences are respectively 50Pa, 100Pa and 150Pa by referring to an air tightness performance detection pressure difference sequence chart of the building industry standard JG/T211-2001 of the people's republic of China, and finally converting the permeation quantity when the pressure difference value is the pressure difference value into the permeation quantity when the pressure difference is 10Pa according to related companies, wherein the value is the value. However, in the process of inflating the sealed cavity, the air flow discharged by the air blower has a high flow rate, so that the rubber belt for sealing is easily impacted, the punching time of the sealed cavity is prolonged, and the accuracy of the test result is reduced to a certain extent. Thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an airtight test system of building exterior window that structural design is simple, effectively reduces to enter into the airtight intracavity air current impact force.

In order to solve the technical problem, the utility model relates to an airtight test system of building exterior window, including sealed frame, pressure air supply portion and pressure differential test portion. The sealing frame is detachably fixed on the wall body and is opposite to the position corresponding to the outer window so as to form a sealing cavity. The pressure air supply unit includes an air supply pipe, a blower, a flow rate regulating valve, a flow meter, and a check valve. The inlet end of the air supply pipe is communicated with the air outlet of the blower, and the outlet end of the air supply pipe is connected with the sealing frame and communicated with the sealing cavity. Along the flow direction of the pressure air, the check valve, the flow regulating valve and the flow meter are sequentially arranged on the air supply pipe. The differential pressure test part comprises an exhaust pipe and a differential pressure measuring instrument. One end of the exhaust pipe is communicated with the sealed cavity, and the other end of the exhaust pipe is communicated with the atmosphere. The differential pressure gauge is disposed on the exhaust pipe. In addition, the sealing frame also comprises a wind shield which is fixed in the sealing cavity and is arranged right in front of the outlet end of the air supply pipe.

As a further improvement of the technical proposal of the utility model, a diversion trench is arranged on the wind shield and just corresponding to the outlet end of the air supply pipe. The quantity of guiding gutter sets up to a plurality ofly, carries out the equipartition along the width direction of deep bead.

As a further improvement of the technical proposal of the utility model, the diversion trench is an S-shaped trench, and the cross section of the diversion trench is semicircular.

As the technical scheme of the utility model further improved, sealed frame includes spherical support frame and transparent resin plate. The transparent resin plate is wrapped and fixed on the periphery of the spherical support frame. A coupling flange extends outwardly around the periphery of the spherical support frame.

As a further improvement of the technical scheme of the utility model, the sealing frame still includes the sealing ring, it laminate in on the coupling flange.

As the technical scheme of the utility model improve still further, the sealing ring is the rubber ring, and its thickness is not less than 3 mm.

As the utility model discloses technical scheme's further improvement, above-mentioned building exterior window airtight test system still includes manometer and relief valve, and both all are fixed in on the sealed frame, and communicate with sealed chamber mutually.

As the technical scheme of the utility model further improve, above-mentioned airtight test system of building exterior window still includes frequency conversion speed regulator, its and air feeder looks adaptation, connection to in real time adjust its unit interval air supply volume.

Through adopting above-mentioned technical scheme to set up, can effectively shelter from the exit end of air-feed pipe to form certain reposition of redundant personnel effect to pressurized air, reduce the impact force that the sticky tape received to a certain extent, avoid it to take place the obscission, and then guarantee to inlay the good sealing in gap and section bar concatenation gap to glass, ensure going on smoothly of test process.

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, 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 structural diagram of a first embodiment of the air tightness testing system for the outer window of the building of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the air tightness testing system for the outer window of the building of the present invention.

Fig. 3 is a schematic structural view of a wind deflector in the air tightness testing system for the outer window of the building of the present invention.

Fig. 4 is a schematic structural diagram of a quick connector in the air tightness testing system for the building outer window of the present invention.

1-sealing the frame; 11-wind deflector; 111-a flow guide groove; 12-a spherical scaffold; 121-coupling flange; 13-a transparent resin plate; 14-a sealing ring; 2-a pressurized air supply; 21-an air supply pipe; 22-a blower; 23-a flow regulating valve; 24-a flow meter; 25-a one-way valve; 26-a variable frequency governor; 3-differential pressure testing part; 31-an exhaust pipe; 32-differential pressure gauge; 4-a pressure gauge; 5-safety valve.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments, and fig. 1 shows a schematic structural diagram of a first embodiment of the air tightness testing system for the exterior window of a building according to the present invention, which mainly comprises a sealing frame 1, a pressure air supply part 2 and a pressure difference testing part 3. The sealing frame 1 is detachably fixed on the inner side surface of the wall body and is opposite to the position corresponding to the outer window so as to form a sealing cavity. The pressure air supply unit 2 includes an air supply pipe 21, a blower 22, a flow rate control valve 23, a flow meter 24, and a check valve 25. The inlet end of the air pipe 21 is communicated with the air outlet of the blower 22, and the outlet end thereof is connected with the sealing frame 1 and communicated with the sealing cavity. In the pressure air flow direction, a check valve 25, a flow rate regulating valve 23, and a flow meter 24 are sequentially arranged on the air feed pipe 21. The differential pressure test unit 3 includes an exhaust pipe 31 and a differential pressure gauge 32. One end of the exhaust pipe 31 communicates with the sealed chamber and the other end communicates with the atmosphere. The differential pressure measuring instrument 32 is arranged on the exhaust pipe 31, and detects the absolute pressure difference between the sealed cavity and the atmosphere in real time. It should be emphasized that the sealing frame 1 further includes a wind deflector 11 fixed in the sealing chamber and disposed right in front of the outlet end of the air supply pipe 21. Therefore, the outlet end of the air supply pipe 21 can be effectively shielded, a certain flow dividing effect is formed on the pressure air, the impact force on the adhesive tape can be reduced to a certain degree, the adhesive tape is prevented from falling off in the subsequent experiment process, the good sealing of the glass embedding gap and the section splicing gap is further ensured, and the smooth proceeding of the air tightness test process is ensured.

As a further optimization of the air tightness test system for the building exterior window, a diversion trench 111 may be further provided on the wind shield 11 in a manner of directly corresponding to the outlet end of the air supply pipe 21. The number of the guide grooves 111 is set to be plural, and is evenly distributed in the width direction of the wind deflector 11 (as shown in fig. 3). Therefore, in the actual operation process, the existence of the diversion trench 111 can optimize the stress state of the wind deflector 11 to a certain extent, thereby effectively reducing the shaking amount of the wind deflector 11 after being impacted by the airflow, ensuring the stability of the state of the wind deflector and reducing the working noise.

Of course, as a further optimization of the above technical solution, the diversion trench 111 is preferably an S-shaped trench, and its cross section is semicircular (as shown in fig. 3).

In view of convenience in storage and space utilization, the air supply pipe 21 and the exhaust pipe 31 are preferably flexible plastic hoses.

In addition, two quick-connect plugs may be fixed at corresponding positions of the sealing frame 1 to respectively fit the air supply pipe 21 and the exhaust pipe 31. A new quick connector is proposed herein, as shown in fig. 4, which includes a quick connector assembly and a connector body assembly. One end of the quick plug assembly is fixedly connected with the air supply pipe or the exhaust pipe, and the other end of the quick plug assembly is a quick plug end and is assembled in the connector body assembly; the quick connector assembly comprises a connector main body, a first sealing ring, a second sealing ring and a locking ring. One end of the joint body assembly is a threaded sleeve main body and is used for inserting the quick-plugging joint assembly, and the other end of the joint body assembly is an external thread and is used for being connected with the pipe joint part. The joint body assembly comprises a threaded sleeve main body, a third sealing ring, a joint body main body, a fourth sealing ring quick connector assembly and a self-locking fixing device formed between the joint body assembly and the quick connector assembly, so that the quick connector assembly is locked in one direction. Thus, the installation time of the air supply pipe 21 and the exhaust pipe 31 can be effectively reduced, the connection efficiency is improved, and the man-hour required for the detection auxiliary work is reduced; on the other hand, the strength and stability of the connection between the air supply pipe 21 and the exhaust pipe 31 and the sealing frame 1 can be ensured.

In the prior art, the structural form of the sealing frame is usually designed to be rectangular, and although the operation of transferring the sealing frame is facilitated, the rectangular structure has poor compression stability. In this way, at the manufacturing stage of the sealing frame, the need to increase the specifications of the profiles used or to add auxiliary supports is avoided, with a view to increasing the structural strength, thus greatly increasing its own weight and manufacturing costs. Therefore, in the present invention, the sealing frame 1 is preferably composed of a spherical support frame 12 having a high compressive strength and a transparent resin plate 13. Wherein, the transparent resin plate 13 is wrapped and fixed on the periphery of the spherical support frame 12. Sealing strips are required to fill and seal the joints between the transparent resin plates 13. In addition, a connecting flange 121 may be extended around the periphery of the spherical support frame 12, so that the sealing frame 1 can be conveniently and quickly fixed on the wall surface during the actual installation process.

In order to improve the sealing performance of the sealing cavity and reduce the total pressurizing time, a sealing ring 14 can be clamped between the coupling flange 121 and the wall surface, and the specific embodiment is recommended as follows: the sealing ring 14 is adhered, fixed, preferably rubber, around the working face of the above-mentioned coupling flange 121 and has a thickness not less than 3 mm.

Fig. 3 shows a schematic structural diagram of a wind deflector in the air tightness testing system for the external window of a building of the present invention, which is different from the first embodiment in that: above-mentioned airtight test system of building exterior window can also additionally be provided with manometer 4 and relief valve 5, and both are fixed in on sealed frame 1, and communicate with sealed chamber mutually, so, have ensured the security of the process of pressurizing effectively, prevent the emergence of incident.

Finally, it should be noted that, the above-mentioned building exterior window air tightness testing system may further be additionally provided with a variable frequency speed regulator 26, which is adapted and connected with the blower 22 (as shown in fig. 3), so as to adjust the air output per unit time in real time, and ensure that the pressure value in the sealed cavity meets the requirements of the testing regulations at different time periods.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The air tightness testing system for the building outer window is characterized by comprising a sealing frame, a pressure air supply part and a pressure difference testing part; the sealing frame is detachably fixed on the wall body and is opposite to the position corresponding to the outer window so as to form a sealing cavity; the pressure air supply part comprises an air supply pipe, a blower, a flow regulating valve, a flowmeter and a one-way valve; the inlet end of the air supply pipe is communicated with the air outlet of the air feeder, and the outlet end of the air supply pipe is connected with the sealing frame and communicated with the sealing cavity; the check valve, the flow regulating valve and the flow meter are sequentially arranged on the air feed pipe along the flowing direction of the pressure air; the differential pressure testing part comprises an exhaust pipe and a differential pressure measuring instrument; one end of the exhaust pipe is communicated with the sealed cavity, and the other end of the exhaust pipe is communicated with the atmosphere; the differential pressure measuring instrument is arranged on the exhaust pipe; the sealing frame further comprises a wind shield which is fixed in the sealing cavity and arranged right in front of the outlet end of the air supply pipe.

2. The air tightness testing system for the external window of the building as claimed in claim 1, wherein a flow guide groove is provided on the wind deflector in a position corresponding to the outlet end of the air supply pipe; the number of the diversion trenches is set to be a plurality of, and the diversion trenches are uniformly distributed along the width direction of the wind shield.

3. The air tightness testing system of the building exterior window according to claim 2, wherein said guiding groove is an S-shaped groove and its cross section is semicircular.

4. The building exterior window airtightness testing system according to any one of claims 1 to 3, wherein the sealing frame comprises a spherical support frame and a transparent resin plate; the transparent resin plate is wrapped and fixed on the periphery of the spherical support frame; a coupling flange extends outwardly around the periphery of the spherical support frame.

5. The building exterior window air tightness testing system according to claim 4, wherein said sealing frame further comprises a sealing ring fitted on said coupling flange.

6. The building exterior window airtightness testing system according to claim 5, wherein the seal ring is a rubber ring, and has a thickness of not less than 3 mm.

7. The air tightness test system for the external window of a building according to any one of claims 1 to 3, further comprising a pressure gauge and a safety valve, both of which are fixed to said sealing frame and are in communication with said sealed cavity.

8. The air tightness test system of the external window of the building as recited in any one of claims 1 to 3, further comprising a variable frequency governor adapted and connected to the blower for real-time adjustment of the volume of the air delivered per unit time.