Building external thermal insulation system quality detection system and detection method

Abstract

The invention provides a quality detection system for a building external thermal insulation system. Hardware equipment of the system comprises a fan cover, a sealing frame, an air duct, a movable bracket, a control box and a fan, the fan cover is located on a to-be-detected wall surface, simulates an actual use environment, and directionally provides a wind load manually; the sealing frame is located between the fan cover and the wall face and seals the fan cover and the wall face. The air duct is located on one side of the fan cover and connected with the fan cover and the control box. The movable support is located below the air duct and used for supporting and adjusting the position of the air duct. The fan is connected with the control box and connected with the air duct through the control box to provide air pressure power. According to the building external thermal insulation system quality detection system and detection method provided by the invention, the control box, the high-power fan, the air duct pipe, the sliding bracket, the fan cover, the sealing frame and matched software are utilized to form a system, the wind load effect actually borne by a building external envelope structure is simulated, and a method closer to the actual use environment is adopted; and evaluating the bonding quality of the external thermal insulation system of the external envelope structure.

Description

Technical Field

[0001] The invention relates to a quality detection system and a detection method for a building exterior thermal insulation system. Background Art

[0002] As one of the important measures for energy conservation in building envelope structures, external wall insulation can not only improve the thermal insulation performance of the wall, reduce the conduction loss of indoor heat energy, and increase the thermal stability of the room, but also avoid indoor mildew, condensation and other phenomena. Under the general trend of vigorously promoting building energy conservation, in order to improve the energy-saving effect of the external wall insulation system, various types of insulation materials have been introduced to the market in a specific period of time. The main methods of external wall insulation are: pasting board insulation materials on the outside of the load-bearing wall, including expanded polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane rigid foam spray (PUR), rock wool board (strip) decorative integrated board, foamed glass board, foamed ceramic board, etc.; slurry insulation materials, including inorganic insulation mortar, glue powder polystyrene particle insulation mortar, etc.

[0003] In newly built buildings, the quality of external insulation bonding is often unreliable due to problems such as poor quality of insulation materials or construction or inadequate maintenance due to rushing to meet deadlines.

[0004] Existing buildings have experienced several or even dozens of years of environmental influences, wind, rain and sun, and the external wall insulation system has developed wall bonding quality problems such as bulging, cracking and even falling off, posing safety hazards.

[0005] The areas where there are problems with the bonding quality of the external insulation of the maintenance structure fall off. This is mainly because under the action of wind load, a pressure difference is formed between the windward side of the insulation structure and the internal defective parts, leading to tensile damage.

[0007] The existing bonding quality testing method is mainly the on-site pulling method of the tensile bonding strength between the insulation material and the base layer; this method is mainly applied to new buildings and has the following disadvantages: 1. Since there are no clear technical indicators for the external insulation of existing buildings, the application scope is narrow and it is basically only used to test the bonding quality during the construction of the insulation layer of new buildings; 2. The sampling area is small, generally the bonding area of ​​40mm×40mm or 95mmX95mm iron block, which only accounts for a small part (less than 5% of the single block area) of the entire insulation board (generally 300mm×300mm and 600mm×1200mm in size), and it is difficult to represent the quality of the entire board, especially when the insulation board is fixed with insulation anchor bolts, it cannot directly reflect the bonding quality of the entire board under the condition of anchor reinforcement; 3. If the insulation material is strip-bonded, spot-bonded or has a small amount of hollows, the smaller sampling area may be taken at the non-mortar bonded area or the incomplete mortar bonded area, resulting in misjudgment of the bonding quality; 4. If the surface of the thermal insulation material has been coated with a decorative surface layer, the pull-out method result cannot evaluate the bonding quality between the decorative layer and the thermal insulation material. The test can only be carried out after removing the decorative covering layer. 5. In order to ensure the accuracy of area measurement during strength calculation, the drawing method often requires pasting the drawn iron block and then cutting along the periphery of the iron block. The cut is not easy to be straight, and the area is not easy to be exactly consistent with the area of ​​the iron block, resulting in deviations in the calculated strength. When cutting, the smaller sampling area is more obviously disturbed, resulting in lower results.

[0008] 6. The test results of the pull-out method cannot be directly equivalent to the actual wind load mechanism, and cannot directly reflect the bonding quality of the external insulation of the enclosure structure under wind load during actual use.

[0009] There are also some biased inspection methods, such as the tapping method and infrared camera method, which are commonly used in census. These two methods have the following defects: 1. Both methods are qualitative methods, which can only determine whether there are hollows or defects, but cannot determine whether these problems affect the bonding quality or the extent of the impact, and cannot be directly used for the detection and evaluation of bonding quality. Moreover, they cannot reflect whether the defects may cause damage under the action of wind loads.

[0010] 2. The tapping method can only confirm that there is a hollow somewhere, but cannot determine whether it is a hollow caused by incomplete bonding of the insulation board or a hollow caused by a disease. When there is a finishing layer, it is impossible to determine whether the hollow is the finishing layer or the insulation layer; 3. Infrared photography is greatly affected by the photographed surface. Different surface materials, colors or degrees of contamination will all show temperature difference feedback in the image, and the depth of the defect and its impact cannot be determined. Summary of the invention

[0011] The technical problem to be solved by the present invention is to provide a quality inspection system and method for a building exterior insulation system, through which the inspection system directly detects the wind pressure of the peripheral building structure, forms an artificial simulated wind load on the inspection part, and achieves the inspection purpose.

[0012] In order to solve the above technical problems, the technical solution of the present invention is: a building exterior insulation system quality detection system, which evaluates the bonding quality of the exterior insulation system of the external enclosure structure by simulating the damage caused by actual wind pressure through software and hardware design. The hardware equipment of the system includes a wind hood, a sealing frame, an air duct, a movable bracket, a control box and a fan; the wind hood is located on the wall to be detected, and provides artificial simulated wind load in a directional manner; the sealing frame is located between the wind hood and the wall, and seals the wind hood and the wall; the air duct is located on one side of the wind hood, connecting the wind hood and the control box; the movable bracket is located below the air duct, and is used to support and adjust the position of the air duct; the fan is connected to the control box, and is connected to the air duct through the control box to provide wind pressure power; The sealing frame is composed of two square frames, the square frames are filled with sealant, and a pressure plate is arranged in the middle, one side of the pressure plate is in contact with the detection wall, and the other side is connected to the wind cover; The system controls the fan through the control box to achieve programmed wind pressure output. Its detection procedures include continuous wind pressure procedure, leak detection procedure and pulse wind pressure procedure. After starting the fan, the leak detection procedure reduces the pressure to 500Pa at a speed of not less than 50Pa / s and stabilizes the pressure for not less than 10s. After two pulses, if the air tightness is poor, it will be manifested as a continuous increase in air flow during the pressure stabilization stage or the flow is always greater than 50m 3 / h, the program is terminated, and the sealing conditions of all parts of the system are rechecked before restarting the program; The continuous wind pressure procedure is started after the leak detection procedure is completed, the pressure is reduced to 500Pa at a speed of not less than 50Pa / s, the pressure is stabilized for not less than 3s, and then the pressure is reduced to the set pressure difference at a speed of not less than 50Pa / s, maintained for 10s, and then rapidly increased to atmospheric pressure; The pulse wind pressure program is started after the leak detection program is completed. The pressure is reduced to the set pressure difference at a speed of not less than 50Pa / s, and then the pressure is quickly increased to atmospheric pressure. Then, the pressure is immediately reduced to the set pressure difference at a speed of not less than 50Pa / s. One reduction and one increase is one cycle. Repeat the above program until the set number of cycles is reached.

[0013] Furthermore, the wind hood includes a bottom frame, a mask and a joint; the bottom frame cooperates with the sealing frame, connects the sealing frame, and cooperates with the pressure plate; the mask is connected around the bottom frame to seal the inside of the wind hood; the joint is located at the bottom of the mask and connects to the inside of the wind hood.

[0014] Furthermore, the bottom frame cooperates with the pressure plate of the sealing frame, and a rubber ring is arranged on its periphery for sealing.

[0015] Furthermore, the mask is made of four transparent acrylic plates, which are connected to each other. Each mask has a trapezoidal shape, and a metal strip is arranged on the center line to provide supporting strength. High elastic modulus sealant is used to connect the bottom frame and the joint on both sides.

[0016] Furthermore, the air duct is formed by connecting multiple sections of pipes, including straight pipes and curved pipes; multiple pipes are provided with socket joints, and inside two adjacent pipes, a cylindrical lock is provided on one pipe and an "L"-shaped lock is provided on the other pipe, and the two are connected with each other, and a sealing ring is glued inside the pipe.

[0017] Furthermore, a telescopic hose is provided on the straight pipe, the telescopic hose is arranged horizontally, iron sheets are provided on both sides, and the telescopic hose is in contact with the movable bracket.

[0018] Furthermore, the control box is provided with a differential pressure meter and a flow meter for detecting the wind pressure and flow in the fan and the air duct.

[0019] Furthermore, the detection method of the present system is as follows: The first step is to select the working surface, i.e. the sample area; The second step is to apply sealant to the test area and maintain it for one to three days; The third step is to calculate the standard value of wind load in the test area according to the basic wind pressure in the test area; The fourth step is to set up the detection system after the sealant maintenance expires, connect the power supply, align the system's sealing frame and place it on the wall sealant area, then align the wind hood with the pressure plate and press it, and check the sealing conditions of each part; Step 5: Select the test program, start the fan, and conduct the test. The target wind pressure in the program is the standard value calculated in step 3. Step 6. When selecting the pulse air pressure program, the number of cycles should be no less than 5 times; Step 7. After the detection program is completed normally, terminate the program, disconnect the power supply, dismantle the detection system, and record the wall detection results.

[0020] Furthermore, in the first step, if the building to be inspected is a newly built, renovated or expanded building involving an external insulation system of the enclosure structure, it can be divided into inspection batches according to the relevant acceptance standards for building energy conservation, and three locations can be used for inspection in one inspection.

[0021] Furthermore, in the first step, if the building to be inspected is an existing building, after determining the key parts through infrared or percussion survey, specific area inspection can be carried out. The inspection can also be divided into batches, and the inspection frequency and parts can be compiled according to the inspection batches.

[0022] Compared with the prior art, the present invention provides a building exterior insulation system quality detection system and detection method, which utilizes a control box, a high-power fan, an air duct and a sliding bracket, a wind cover and a sealing frame and supporting software to form a system, simulates the actual wind load on the building exterior envelope structure, and adopts a method closer to the actual use conditions to evaluate the bonding quality of the exterior insulation system of the exterior envelope structure; The method adopted by the present invention is to simulate the wind load effect under actual use conditions. According to the building structure load specification, once the geographical location of the building is determined and the design is finalized, the standard value of the wind load on the external envelope structure at different heights can be determined. Therefore, the present invention is suitable for the detection and evaluation of the bonding quality of the external insulation system of the external envelope structure of new, modified and expanded buildings and existing buildings.

[0023] Since the sampling area is large and representative, and it is affected by external wind pressure and is not affected by the construction process, point sticking, strip sticking or full sticking can be applied with high accuracy; especially for point sticking or strip sticking process, it can more realistically detect the sticking quality and evaluate whether the sticking area ratio meets the actual application requirements, providing a basis for design; The method of simulating wind load is adopted. Due to the characteristics of wind load transmission, the present invention is not affected by the decorative layer of the external protective structure and can simultaneously detect the bonding quality of the external decorative layer. It is not a simple qualitative inspection, but can effectively evaluate whether the external insulation system and the decorative layer are damaged under actual wind load. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the system hardware structure of the present invention is shown.

[0025] Figure 2 A front view of a sealing frame according to the present invention is shown.

[0026] Figure 3 Show Figure 2 A partial enlarged view of the .

[0027] Figure 4 A front view of the wind shield of the present invention is shown.

[0028] Figure 5 A schematic diagram of an air duct according to the present invention is shown.

[0029] Figure 6 A schematic diagram of the pipeline connection structure of the present invention is shown.

[0030] Figure 7 A wind pressure schematic diagram showing the continuous wind pressure procedure of the present invention.

[0031] Figure 8 A wind pressure schematic diagram showing the pulse wind pressure procedure of the present invention.

[0032] Including: 1. Wind hood, 2. Sealing frame, 3. Air duct, 4. Movable bracket, 5. Control box, 6. Fan, 7. Frame, 8. Sealant, 9. Pressure plate, 10. Bottom frame, 11. Mask, 12. Joint, 13. Straight pipe, 14. Bend pipe, 15. Telescopic hose, 16. Cylindrical lock, 17. "L" type lock, 18. Sealing ring. DETAILED DESCRIPTION

[0033] like Figure 1 As shown, in one embodiment, a building exterior insulation system quality inspection system, the system's hardware equipment includes a wind hood, a sealing frame, an air duct, a movable bracket, a control box and a fan; the wind hood is located on the wall to be inspected, and provides a directional artificial simulated wind load; the sealing frame is located between the wind hood and the wall, and seals the wind hood and the wall; the air duct is located on one side of the wind hood, connecting the wind hood and the control box; the movable bracket is located below the air duct, and is used to support and adjust the position of the air duct; the fan is connected to the control box, and is connected to the air duct through the control box to provide wind pressure power.

[0034] like Figure 2 and 3 As shown, in one embodiment, the sealing frame is composed of two square frames, the groove depth of the two square frames is 10mm, the gap is 15mm, the size between the center lines is 715mm×715mm, and the internal effective size is 700mm×700mm. The sealant uses high modulus sealant of 25HM, 35HM or 50HM specifications in GB / T14683 "Silicone and Modified Silicone Building Sealant", which ensures sufficient elastic deformation and is not damaged when subjected to force compression. The filling height is about 13mm, the filling is dense and has no pores, and the filling should be completed at one time, and no seams should be formed. The pressure plate is 10mm wide and 1.5mm thick, with a shallow indentation in the middle for aligning and positioning the wind shield; after the filling sealant is cured, the pressure plate is evenly coated with a layer of sealant of the same specification as the filling sealant on the non-indentation ground, and then lightly pressed and pasted on the filling sealant, and it is ensured to be in the middle of the gap of the sealing frame. After the pressure plate on the sealing frame is subjected to the pressure of the wind hood, the pressure is evenly distributed to the filling glue, which is compressed and close to the wall surface, diffusing the pressure to the wall and forming a seal. In actual application, after the detection part is determined, first use a sealing frame or a layout frame of the same size to mark the detection part frame line on the wall, and apply a thin layer of sealant along the frame line with a width of not less than 20mm, especially for some rough walls sprayed with real stone paint, to ensure that the sealing frame fits tightly with the wall and evenly diffuses and transmits the pressure to prevent the local wall from being squeezed and damaged by concentrated force, which affects the entire test.

[0035] like Figure 7 and 8As shown, in one embodiment, the system controls the fan through the control box to achieve programmed wind pressure output, and its detection program includes a continuous wind pressure program, a leak detection program and a pulse wind pressure program; after starting the fan, the leak detection program reduces the pressure to 500Pa at a speed of not less than 50Pa / s, and stabilizes the pressure for not less than 10s; after two pulses, if the air tightness is poor, it is manifested as a continuous increase in air flow during the pressure stabilization stage or the flow is always greater than 50m 3 / h, the program is terminated, and the sealing conditions of all parts of the system are rechecked before restarting the program; The continuous wind pressure procedure is started after the leak detection procedure is completed, the pressure is reduced to 500Pa at a speed of not less than 50Pa / s, the pressure is stabilized for not less than 3s, and then the pressure is reduced to the set pressure difference at a speed of not less than 50Pa / s, maintained for 10s, and then rapidly increased to atmospheric pressure; The pulse wind pressure program is started after the leak detection program is completed. The pressure is reduced to the set pressure difference at a speed of not less than 50Pa / s, and then the pressure is quickly increased to atmospheric pressure. Then, the pressure is immediately reduced to the set pressure difference at a speed of not less than 50Pa / s. One reduction and one increase is one cycle. Repeat the above program until the set number of cycles is reached.

[0036] like Figure 4 As shown, in one embodiment, the wind shield includes a bottom frame, a mask and a joint; the bottom frame cooperates with the sealing frame, connects the sealing frame, and cooperates with the pressure plate; the mask is connected around the bottom frame to seal the inside of the wind shield; the joint is located at the bottom of the mask and connects the inside of the wind shield; the bottom frame cooperates with the pressure plate of the sealing frame, and a rubber ring is arranged on its periphery for sealing, and the height of the rubber strip is about 1mm; the mask is made of four transparent acrylic plates with a thickness of 2mm, which are connected to each other and reinforced with stiffening ribs. The stiffening ribs are steel bars welded on the edges of the bottom frame and the joint and supported on the center line position of the inner side of the mask to prevent the mask from being excessively deformed by air pressure, ensure the lightweight of the entire wind shield, and facilitate the safety of high-altitude operations. The transparent acrylic plate has good bending strength and can very well observe the bonding damage of the inspected area under wind load. A hose quick connector is provided in the middle of the upper mask for quick connection of the differential pressure gauge hose. The joint is in the middle of the hood, with a pipe section of 100mm diameter and a length of not less than 100mm. Two small cylindrical locks are symmetrically welded 40mm from the end of the pipe section to tighten and lock it when the socket air duct is connected. A wet non-woven mesh bag is usually placed under the hood. If the bonding quality of the external insulation system is insufficient, after the test, the peeled insulation, mortar and finishing materials can be collected by the non-woven mesh bag to avoid flying and falling.

[0037] like Figure 5As shown, in one embodiment, the air duct is formed by connecting multiple sections of pipes, including straight pipes and curved pipes; a 200mm horizontal pipe section 2 with a horizontal socket joint at one end and a vertical socket joint at the other end is connected, that is, pipe section 1 is connected to pipe section 2, horizontally bent 90°, pipe section 2 is connected to pipe section 3, vertically bent 90°, expressed in the spatial coordinate system, the horizontal plane is bent 90° along the negative direction of the Y axis to the positive direction of the X axis, and then the vertical plane is bent 90° along the positive direction of the X axis to the negative direction of the Z axis. Such connection ensures that the equipment can be spread out on a narrow hanging basket or scaffolding platform during actual use; a telescopic hose is arranged on the straight pipe, the telescopic hose is arranged horizontally, and iron sheets are arranged on both sides to contact the movable bracket.

[0038] like Figure 6 As shown, in one embodiment, a plurality of the pipes are provided with socket joints, and inside two adjacent pipes, a cylindrical lock is provided on one pipe, and an "L"-shaped lock is provided on the other pipe, and the two are connected with each other, and a sealing ring is glued inside the pipe.

[0039] In one embodiment, the upper part of the movable bracket is a circular iron sheet that fits the air duct, and a proper amount of lubricating oil can be applied, so that when the system is running, the deformation of the sealing frame, the air hood, and the pipeline caused by the airflow is compensated by the retractable hose, and the two ends of the retractable hose can be freely retracted in the axial direction. The lower part of the sliding bracket is a triangular support, and the vertical support rod can be adjusted up and down by the locking bolt to ensure that effective support can be provided when the test surface height is different.

[0040] In one embodiment, the control box is equipped with a differential pressure gauge, a flow meter, a PLC control module and a display, and the fan is a high-power fan. The differential pressure gauge is used to detect the pressure difference between the inside and outside of the hood. One end of the differential pressure hose is connected to the hood mask, and the other end is connected to the differential pressure gauge. The other connector of the differential pressure gauge is directly connected to the outside atmosphere. The flow meter is installed in the internal straight pipe section and is mainly used to evaluate the airtightness effect of the overall system. The differential pressure gauge, flow meter and high-power fan are all controlled by the PLC control module and displayed on the display. At the same time, the touch screen display is also an input device for setting the pressure difference and is controlled by the PLC control module. The control program mainly consists of two sets, one is the continuous wind pressure action program, and the other is the pulse wind pressure action program.

[0041] In one embodiment, the detection method using the present system is as follows: The first step is to select the working surface, i.e. the sample area; The second step is to apply sealant to the test area and maintain it for one to three days; The third step is to calculate the standard value of wind load in the test area according to the basic wind pressure in the test area; The fourth step is to set up the detection system after the sealant maintenance expires, connect the power supply, align the system's sealing frame and place it on the wall sealant area, then align the wind hood with the pressure plate and press it, and check the sealing conditions of each part; Step 5: Select the test program, start the fan, and conduct the test. The target wind pressure in the program is the standard value calculated in step 3. Step 6. When selecting the pulse air pressure program, the number of cycles should be no less than 5 times; Step 7. After the detection program is completed normally, terminate the program, disconnect the power supply, dismantle the detection system, and record the wall detection results.

[0042] In the first step, if the building to be inspected is a newly built, renovated or expanded building involving an external insulation system of the enclosure structure, it can be divided into inspection batches according to the relevant acceptance standards for building energy conservation, and three locations can be used for inspection in one inspection batch.

[0043] In the first step, if the building to be inspected is an existing building, the key parts can be determined through infrared or tapping method survey, and then specific area inspection can be carried out. The inspection can also be divided into batches, and the inspection frequency and locations can be compiled according to the inspection batches.

[0044] After the test is completed, observe the test wall and make a judgment: 1. If there are no cracks or peeling, the bonding quality of the external insulation system is reliable; 2. If there are a few cracks but no peeling, the bonding quality of the external insulation system is reliable. Newly built, renovated and expanded buildings should pay attention to the construction quality of the finishing layer. Existing buildings should be inspected regularly after severe weather such as strong winds. 3. If there is peeling, but only the finishing layer is peeling, then the bonding quality of the external insulation system is relatively reliable. Newly built, renovated and expanded buildings should strengthen the construction quality of the finishing layer. Existing buildings should be repaired regularly after severe weather such as strong winds and heavy rains to prevent erosion of the insulation layer. 4. If there is peeling, and the mortar layer on the outside of the insulation board is peeling, or the insulation board is exposed, but there is no insulation material or only a small amount of debris is peeling, then the bonding quality of the external insulation system surface layer is unreliable and there is a possibility of peeling. Newly built, renovated and expanded buildings should be arranged for re-pasting or reinforcement, and existing buildings should adopt reinforcement or other appropriate treatment methods; 5. If the insulation layer peels off directly or separates from the main part of the maintenance structure, the bonding quality of the external insulation system is poor. Construction of new buildings, renovations and expansions must be stopped immediately and effective measures must be taken. Existing buildings must immediately be divided into fall-hazardous areas and promptly managed.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than a limiting technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. A building exterior insulation system quality detection system, which evaluates the bonding quality of the exterior insulation system of the exterior enclosure structure by simulating the damage caused by actual wind pressure through software and hardware design, characterized in that: The hardware equipment of the system includes a wind hood, a sealing frame, an air duct, a movable bracket, a control box and a fan; the wind hood is located on the wall to be tested, and provides artificial simulated wind load in a directional manner; the sealing frame is located between the wind hood and the wall, and seals the wind hood and the wall; the air duct is located on one side of the wind hood, and connects the wind hood and the control box; the movable bracket is located under the wind duct, and is used to support and adjust the position of the wind duct; the fan is connected to the control box, and is connected to the wind duct through the control box to provide wind pressure power; The sealing frame is composed of two square frames, the square frames are filled with sealant, and a pressure plate is arranged in the middle, one side of the pressure plate is in contact with the detection wall, and the other side is connected to the wind cover; The system controls the fan through the control box to achieve programmed wind pressure output. Its detection procedures include continuous wind pressure procedure, leak detection procedure and pulse wind pressure procedure. After starting the fan, the leak detection procedure reduces the pressure to 500Pa at a speed of not less than 50Pa / s and stabilizes the pressure for not less than 10s. After two pulses, if the air tightness is poor, it will be manifested as a continuous increase in air flow during the pressure stabilization stage or the flow is always greater than 50m 3 / h, the program is terminated, and the sealing conditions of all parts of the system are rechecked before restarting the program; The continuous wind pressure procedure is started after the leak detection procedure is completed, the pressure is reduced to 500Pa at a speed of not less than 50Pa / s, the pressure is stabilized for not less than 3s, and then the pressure is reduced to the set pressure difference at a speed of not less than 50Pa / s, maintained for 10s, and then rapidly increased to atmospheric pressure; The pulse wind pressure program is started after the leak detection program is completed. The pressure is reduced to the set pressure difference at a speed of not less than 50Pa / s, and then the pressure is quickly increased to atmospheric pressure. Then, the pressure is immediately reduced to the set pressure difference at a speed of not less than 50Pa / s. One reduction and one increase is one cycle. Repeat the above program until the set number of cycles is reached.

2. A building exterior insulation system quality detection system according to claim 1, characterized in that: The wind hood includes a bottom frame, a mask and a joint; the bottom frame cooperates with the sealing frame, connects the sealing frame, and cooperates with the pressure plate; the mask is connected around the bottom frame to seal the inside of the wind hood; the joint is located at the bottom of the mask and connects to the inside of the wind hood.

3. A building exterior insulation system quality detection system according to claim 2, characterized in that: The bottom frame is matched with the pressure plate of the sealing frame, and a rubber ring is arranged on the periphery thereof for sealing.

4. A building exterior insulation system quality detection system according to claim 2, characterized in that: The mask is made of four transparent acrylic plates, which are connected to each other. Each mask has a trapezoidal shape, and a metal strip is arranged on the center line to provide supporting strength. High elastic modulus sealant is used to connect the bottom frame and the joint on both sides.

5. A building exterior insulation system quality detection system according to claim 1, characterized in that: The air duct is formed by connecting multiple sections of pipes, including straight pipes and curved pipes; multiple pipes are provided with socket joints, and inside two adjacent pipes, a cylindrical lock is provided on one pipe and an "L"-shaped lock is provided on the other pipe, and the two are connected with each other, and a sealing ring is glued inside the pipe.

6. A building exterior insulation system quality detection system according to claim 5, characterized in that: A telescopic hose is arranged on the straight pipe, the telescopic hose is arranged horizontally, iron sheets are arranged on both sides, and the telescopic hose is in contact with the movable bracket.

7. A building exterior insulation system quality detection system according to claim 1, characterized in that: The control box is provided with a differential pressure meter and a flow meter for detecting the wind pressure and flow in the fan and the air duct.

8. A detection method using a building exterior thermal insulation system quality detection system as claimed in any one of claims 1 to 7, characterized in that: The detection steps are as follows: The first step is to select the working surface, i.e. the sample area; The second step is to apply sealant to the test area and maintain it for one to three days; The third step is to calculate the standard value of wind load in the test area according to the basic wind pressure in the test area; The fourth step is to set up the detection system after the sealant maintenance expires, connect the power supply, align the system's sealing frame and place it on the wall sealant area, then align the wind hood with the pressure plate and press it, and check the sealing conditions of each part; Step 5: Select the test program, start the fan, and conduct the test. The target wind pressure in the program is the standard value calculated in step 3. Step 6. When selecting the pulse air pressure program, the number of cycles should be no less than 5 times; Step 7. After the detection program is completed normally, terminate the program, disconnect the power supply, dismantle the detection system, and record the wall detection results.

9. A quality inspection method for building exterior thermal insulation system according to claim 8, characterized in that: In the first step, if the building to be inspected is a newly built, renovated or expanded building involving an external insulation system of the enclosure structure, it can be divided into inspection batches according to the relevant acceptance standards for building energy conservation, and three locations can be used for inspection in one inspection.

10. A quality inspection method for building exterior thermal insulation system according to claim 9, characterized in that: In the first step, if the building to be inspected is an existing building, the key parts can be determined through infrared or tapping method survey, and then specific area inspection can be carried out. The inspection can also be divided into batches, and the inspection frequency and locations can be compiled according to the inspection batches.

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