A movable air tightness detection device for fireproof plugging material

Abstract

The application provides a movable air tightness detection device for fireproof plugging material, and belongs to the technical field of fireproof plugging material detection. The device comprises a mounting frame assembly, a pressure tank assembly and an air collection tank assembly. The mounting frame assembly is used for accommodating the fireproof plugging material to be subjected to air tightness detection. The pressure tank assembly and the air collection tank assembly are respectively arranged on the front side and the rear side of the mounting frame assembly. The pressure tank assembly is suitable for air tightness detection of the fireproof plugging material, and the air collection tank assembly is suitable for air collection. After the air tightness detection is completed and the fireproof plugging material remains intact, the pressure tank assembly and the air collection tank assembly are moved and separated from the mounting frame assembly, so that the fire resistance test assembly performs fire resistance detection on the fireproof plugging material. The application does not need to disassemble the fireproof plugging material twice, reduces the disassembly and assembly, directly performs the fire resistance test, reduces the equipment investment, reduces the work intensity and accelerates the experimental period, and reduces the damage risk of the fireproof plugging material.

Description

Technical Field

[0001] This invention belongs to the field of fireproof sealing material testing technology, and more specifically, it relates to a mobile airtightness testing device for fireproof sealing materials. Background Technology

[0002] Fire-stopping materials are functional materials used to seal through holes, gaps, or joints in building structures, preventing the spread of flames, high-temperature gases, and toxic fumes. There are various types of fire-stopping materials, such as organic sealants, inorganic sealants, fire-resistant bags, fire-resistant boards, and sealants. According to the standard GB23864-2023 "Fire-stopping Materials," fire-stopping materials used in important locations must be tested for airtightness. Different types of fire-stopping materials require multiple accessories or splicing with other fire-resistant materials during airtightness testing, according to the requirements of the standard appendix. Therefore, these types of fire-stopping materials cannot be tested using existing door and window airtightness testing equipment.

[0003] In light of the characteristics of fire-resistant sealing material testing, fire resistance testing is usually required after the airtightness test is completed. According to the test requirements, the specimens for the airtightness test and the fire resistance test must be the same. The airtightness test is a non-destructive test, and the fire resistance test can only be carried out if the specimen is free from deformation and cracking.

[0004] When conducting airtightness tests on fire-stopping materials, they need to be installed in a mounting frame. After the airtightness test is completed and the fire-stopping material remains intact, it needs to be removed from the mounting frame and then reinstalled onto the mounting frame of the fire resistance testing equipment to continue the fire resistance test. Currently, this testing method requires two installation and removal processes for the fire-stopping material, and two sets of mounting frames are needed, thus increasing the testing cost. Furthermore, the need for multiple installations and removals increases the workload and extends the testing cycle, while also inevitably increasing the risk of damage to the fire-stopping material. Summary of the Invention

[0005] The purpose of this invention is to provide a mobile airtightness testing device for fireproof sealing materials, which aims to solve the technical problem in the prior art that the fireproof sealing materials need to be installed and disassembled multiple times when conducting airtightness and fire resistance tests, resulting in damage to the fireproof sealing materials and prolonging the test cycle.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a mobile airtightness testing device for fireproof sealing materials, comprising: A mounting frame assembly is provided to accommodate fire-resistant sealing material to be tested for air tightness, wherein the outer peripheral wall of the fire-resistant sealing material is detachably connected to the inner wall of the mounting frame assembly. A pressure box assembly is sealed to the front side of the mounting frame assembly, and the pressure box assembly is suitable for performing airtightness testing on the fireproof sealing material. An air collection box assembly is sealed to the rear side of the mounting frame assembly and is disposed opposite to the pressure box assembly. The air collection box assembly is adapted to collect leaked gas during airtightness testing. After the airtightness test of the fireproof sealing material is completed and the fireproof sealing material remains intact, the pressure box assembly and the air collection box assembly are moved and detached from the mounting frame assembly, and the fire resistance test assembly performs a fire resistance test on the fireproof sealing material.

[0007] In one possible implementation, the mobile airtightness testing device for fire-resistant sealing materials also includes: A control system is electrically connected to the pressure tank assembly and the air collection tank assembly, respectively, and is used to control the operation of the pressure tank assembly and the air collection tank assembly.

[0008] In one possible implementation, both the pressure box assembly and the air collection box assembly are equipped with multiple wheels at their bottom ends to enable them to move.

[0009] In one possible implementation, the mounting frame assembly is connected to a plurality of quick-press heads, which are used to detachably connect the pressure box assembly to the mounting frame assembly for a sealed connection; wherein the stroke of the quick-press heads is adjustable.

[0010] In one possible implementation, the installation framework component includes: frame; A mounting bracket is connected to the inner side of the frame; A hollow brick wall is connected to the inner side of the fixing frame and its interior forms an installation area for accommodating fireproof sealing material to be tested for air tightness. The outer wall of the fireproof sealing material is connected to the inner wall of the hollow brick wall. The multiple quick-press heads are connected to the fixed frame or the hollow brick wall and are located above and below the fireproof sealing material.

[0011] In one possible implementation, both the pressure box assembly and the air collection box assembly have wear-resistant sealing strips on their end faces for connection with the mounting frame assembly. The wear-resistant sealing strips are used to seal the gap between the pressure box assembly or the air collection box assembly and the mounting frame assembly.

[0012] In one possible implementation, the pressure box assembly includes a pressure box, a centrifugal fan, a first pipe, a second pipe, and multiple air valves. The pressure box is used to seal the mounting frame assembly. The centrifugal fan is located outside the pressure box. One end of the first pipe is connected to the outlet of the centrifugal fan, and the other end is connected to the pressure box. One end of the second pipe is connected to the outlet of the centrifugal fan, and the other end is connected to the end of the second pipe near the pressure box. The air valves are installed in the middle of both the first pipe and the second pipe. By adjusting the opening and closing of the multiple air valves, the pressure inside the pressure box can be controlled to be positive or negative.

[0013] In one possible implementation, the centrifugal fan is a dual-impeller high-pressure vortex fan, and the pressure box assembly further includes a movable frame, to which both the pressure box and the centrifugal fan are connected.

[0014] In one possible implementation, a shock absorber is provided between the centrifugal fan and the movable frame, the shock absorber being used to buffer and dampen the centrifugal fan.

[0015] In one possible implementation, a ladder is connected to the outside of the pressure tank assembly for personnel to climb.

[0016] The beneficial effects of the mobile airtightness testing device for fire-stopping materials provided by this invention are as follows: Compared with the prior art, the mobile airtightness testing device for fire-stopping materials of this invention includes a mounting frame assembly, a pressure chamber assembly, and an air collection chamber assembly. The mounting frame assembly is used to accommodate the fire-stopping material to be tested for airtightness. The pressure chamber assembly and the air collection chamber assembly are respectively located on the front and rear sides of the mounting frame assembly. The pressure chamber assembly is suitable for performing airtightness testing on the fire-stopping material, and the air collection chamber assembly is suitable for collecting gas. After the airtightness test is completed and the fire-stopping material remains intact, the pressure chamber assembly and the air collection chamber assembly are moved and detached from the mounting frame assembly, allowing the fire resistance testing assembly to perform fire resistance testing on the fire-stopping material. This invention eliminates the need for secondary disassembly and assembly of the fire-stopping material, reducing one disassembly and assembly step, allowing direct fire resistance testing, reducing equipment investment, lowering workload, accelerating the experimental cycle, and reducing the risk of damage to the fire-stopping material. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the structure of a mobile airtightness testing device for fireproof sealing materials provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the pressure box assembly of a mobile airtightness testing device for fireproof sealing materials provided in an embodiment of the present invention, showing the side of the pressure box assembly away from the mounting frame assembly. Figure 3 This is a partial structural diagram of the air collection box assembly near the mounting frame assembly of a mobile airtightness testing device for fireproof sealing materials provided in an embodiment of the present invention. Figure 4 This is a perspective view of the sealing wedge structure of a mobile airtightness testing device for fireproof sealing materials provided in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Mounting frame assembly; 11. Frame; 12. Fixing frame; 13. Hollow brick wall; 2. Pressure box assembly; 21. Pressure box; 22. Centrifugal fan; 23. First pipe; 24. Second pipe; 25. Air valve; 26. Moving frame; 27. Shock absorber; 28. Ladder; 3. Air collection box assembly; 4. Fireproof sealing material; 5. Control system; 6. Wheels; 7. Quick press head; 8. Wear-resistant sealing strip; 9. Sealing wedge; 91. Sealing protrusion; 10. Machine vision inspection assembly. Detailed Implementation

[0020] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0021] In existing technologies, airtightness testing of fire-stopping material 4 requires construction according to different types of fire-stopping material 4. This necessitates a construction period and a curing period for the specimen manufacturing process used in the airtightness test of fire-stopping material 4. If the specimen is installed within the frame of the existing testing equipment, the equipment cannot be used during the construction and curing periods, significantly reducing its utilization rate. This application addresses this by setting up an installation frame assembly 1, allowing the completed and cured specimens to be installed inside the installation frame assembly 1 for airtightness and fire resistance testing, without affecting the use of existing testing equipment.

[0022] Considering the testing characteristics of fire-stopping material 4, a fire resistance test is usually required after the airtightness test. According to standard requirements, the specimens for both the airtightness and fire resistance tests must be identical. Since airtightness testing is non-destructive, the fire resistance test can proceed even if the specimen is undamaged. If the specimen is installed within the frame of existing testing equipment during the airtightness test, the fire resistance test cannot be performed. In this application, by using the mounting frame assembly 1, the existing testing equipment is not occupied, and the fire resistance test can be performed after the airtightness test, provided the specimen is intact. The specimen does not need to be removed from the mounting frame assembly 1.

[0023] Please refer to the following: Figures 1 to 2 The present invention provides a mobile airtightness testing device for fire-stopping materials. The mobile airtightness testing device for fire-stopping materials includes a mounting frame assembly 1, a pressure chamber assembly 2, and an air collection chamber assembly 3. The mounting frame assembly 1 is used to accommodate the fire-stopping material 4 to be tested for airtightness, and the outer peripheral wall of the fire-stopping material 4 is detachably connected to the inner wall of the mounting frame assembly 1. The pressure chamber assembly 2 is sealed to the front side of the mounting frame assembly 1 and is adapted to perform airtightness testing on the fire-stopping material 4. The air collection chamber assembly 3 is sealed to the rear side of the mounting frame assembly 1 and is positioned opposite to the pressure chamber assembly 2. The air collection chamber assembly 3 is adapted to collect leaked gas during the airtightness testing. After the airtightness testing of the fire-stopping material 4 is completed and the fire-stopping material 4 remains intact, the pressure chamber assembly 2 and the air collection chamber assembly 3 are moved and detached from the mounting frame assembly 1, and the fire resistance testing assembly performs fire resistance testing on the fire-stopping material 4.

[0024] This invention provides a mobile airtightness testing device for fire-resistant sealing materials. Compared with the prior art, in this application, during airtightness testing, the pressure box assembly 2 and the air collection box assembly 3 are respectively sealed and connected to the mounting frame assembly 1 to test the airtightness of the fire-resistant sealing material 4. After the airtightness test, the pressure box assembly 2 and the air collection box assembly 3 are disassembled, and then the mounting frame assembly 1 is connected to the fire resistance test assembly for fire resistance testing. There is no need to disassemble and reassemble the fire-resistant sealing material 4 twice in the two tests (it only needs to be installed once during the airtightness test), reducing one disassembly and reassembly, directly conducting the fire resistance test, reducing equipment investment, reducing workload, accelerating the test cycle, and reducing the risk of damage to the fire-resistant sealing material 4.

[0025] The airtightness test in this application meets the requirements of standard GB23864-2023 "Fireproof Sealing Materials". When conducting a fire resistance test, it meets the standard requirements for fire resistance testing. The mounting frame assembly 1 in this application is adaptable for both airtightness testing and fire resistance testing. The fire resistance testing assembly in the above embodiments is prior art and can perform fire resistance testing on the fireproof sealing material 4 located on the mounting frame assembly 1. The methods or steps for fire resistance testing can be found in the prior art and will not be repeated here. The mounting frame assembly 1 in this invention has multiple functions, including airtightness testing and fire resistance testing.

[0026] The air collection box assembly 3 in this embodiment mainly includes a collection box, a frame, an air flow meter, and a differential pressure device. The collection box is mounted on the frame for docking or sealing connection with the mounting frame assembly 1, and is used to collect leaked gas during airtightness testing. The air flow meter is connected to the side of the collection box away from the mounting frame assembly 1 and is used to measure the air flow rate. The differential pressure device connects the collection box and the pressure tank assembly 2, and is used to measure the pressure difference. The specific connection method and testing principle are described in the prior art and will not be repeated here.

[0027] In some embodiments, please refer to Figures 1 to 2 The mobile airtightness testing device for fire-resistant sealing materials also includes a control system 5. The control system 5 is electrically connected to the pressure tank assembly 2 and the air collection tank assembly 3, and is used to control the operation of the pressure tank assembly 2 and the air collection tank assembly 3 respectively. The control system 5 is equipped with control modules, such as control buttons, etc., that can control the operation of the pressure tank assembly 2 and the air collection tank assembly 3. By operating the control system 5, the airtightness of the fire-resistant sealing material 4 can be controlled, such as controlling the testing time, gas pressure and flow rate, to determine the airtightness of the fire-resistant sealing material 4.

[0028] Specifically, the control system 5 has built-in operation control software for air tightness testing. By inputting the information of the test piece (fireproof sealing material 4) and selecting the testing method on the software, the test can be carried out according to the built-in standard GB7106-2019 "Test Method for Air Tightness, Water Tightness and Wind Pressure Resistance of Building Exterior Doors and Windows" and the test results can be recorded. After the test is completed, the pressure box assembly 2 and the air collection box assembly 3 are removed from the mounting frame assembly 1, so as to facilitate the continued fire resistance test.

[0029] In some embodiments, please refer to Figures 1 to 2Both the pressure box assembly 2 and the air collection box assembly 3 are equipped with multiple casters 6 at their bottom ends to allow for flexible movement. The casters 6 support the pressure box assembly 2 and the air collection box assembly 3 and allow for flexible movement to adjust their positions (specifically, to install or remove the pressure box assembly 2 and the air collection box assembly 3 from the mounting frame assembly 1). The addition of casters 6 in this application improves the flexibility of movement and meets usage requirements.

[0030] Specifically, the travel wheels 6 are 2.5-inch casters, and four are installed for each component, which can rotate independently to allow the pressure box assembly 2 and the air collection box assembly 3 to move flexibly.

[0031] To achieve a sealed connection between the mounting frame assembly 1 and the pressure chamber assembly 2 or the air collection chamber assembly 3 for testing according to requirements, in some embodiments, please refer to... Figures 1 to 2 The mounting frame assembly 1 is connected to multiple quick-pressing heads 7, which are used for detachable connection to the pressure box assembly 2 to achieve a sealed connection between the pressure box assembly 2 and the mounting frame assembly 1. The stroke of the quick-pressing heads 7 is adjustable. In this embodiment, the quick-pressing heads 7 are a prior art product, positioned above and below the fireproof sealing material 4 to seal the mounting frame assembly 1 to the pressure box assembly 2 or air collection box assembly 3. The spacing between the multiple quick-pressing heads 7 may be the same or different (appropriately set according to actual conditions), and multiple heads can be set according to the length of the mounting frame assembly 1. In this embodiment, the quick-pressing heads 7 are arranged in two rows, each row arranged in a straight line in the horizontal plane. By adjusting the stroke of the quick-pressing heads 7, interconnection can be achieved and the stability of the connection can be improved.

[0032] Specifically, the quick-connect pressure head 7 can be a quick-clamp, with one end connected to the mounting frame assembly 1 and the other end used for detachable connection (such as clamping or snap-fit) to the pressure box assembly 2, so as to achieve a sealed connection between the pressure box assembly 2 and the mounting frame assembly 1. The quick-connect pressure head 7 is easy to install and remove, and its number can be reasonably set according to the length of the mounting frame assembly 1 or the length of the pressure box assembly 2. When it is necessary to remove the pressure box assembly 2, the quick-connect pressure head 7 can be detached from the pressure box assembly 2.

[0033] Preferably, multiple quick-press heads 7 are detachably connected to the air collection box assembly 3, and a sealed connection between the air collection box assembly 3 and the mounting frame assembly 1 can be achieved through the quick-press heads 7. When disassembling the air collection box assembly 3, the multiple quick-press heads 7 can be detached from the air collection box assembly 3.

[0034] In some embodiments, please refer to Figures 1 to 2The mounting frame assembly 1 includes a frame 11, a fixing frame 12, and a hollow brick wall 13. The fixing frame 12 is connected to the inner side of the frame 11. The hollow brick wall 13 is connected to the inner side of the fixing frame 12 and forms an installation area (rectangular in this embodiment) for accommodating the fire-resistant sealing material 4 to be tested for airtightness. The outer wall of the fire-resistant sealing material 4 is connected to the inner wall of the hollow brick wall 13. Multiple quick-press heads 7 are connected to the fixing frame 12 or the hollow brick wall 13 and are located above and below the fire-resistant sealing material 4. The fixing frame 12 supports and fixes the hollow brick wall 13, and the frame 11 supports the fixing frame 12. A reinforcing strut is also connected to the outer side of the frame 11, which supports the side of the frame 11 and improves its stability. In this embodiment, the hollow brick wall 13 forms a rectangle, with a rectangular installation area inside for the installation of the fire-resistant sealing material 4. The shape of the installation area matches the shape of the fireproof sealing material 4. The fireproof sealing material 4 can be installed inside the installation area, and the perimeter wall and the hollow brick wall 13 are sealed together (specifically, connectors or sealing materials can be used for sealing).

[0035] To ensure a proper seal between the pressure chamber assembly 2 and the mounting frame assembly 1, and to ensure a proper seal between the air collection chamber assembly 3 and the mounting frame assembly 1, in some embodiments, please refer to... Figures 1 to 2 Both the pressure box assembly 2 and the air collection box assembly 3 have wear-resistant sealing strips 8 on their end faces for connection to the mounting frame assembly 1. These strips seal the gaps between the pressure box assembly 2 and the mounting frame assembly 1, and also seal the gaps between the air collection box assembly 3 and the mounting frame assembly 1. This wear-resistant sealing strip 8 is existing technology and is rectangular in shape, surrounding the end faces of the pressure box assembly 2 and the air collection box assembly 3. When in contact with the mounting frame assembly 1, the wear-resistant sealing strip 8 provides a good sealing effect.

[0036] Specifically, the wear-resistant sealing strip 8 is an E-type high-temperature wear-resistant sealing strip, which is easy to install and disassemble with the pressure box assembly 2 or the air collection box assembly 3.

[0037] For preference, please refer to Figures 3-4 When the gaps between the pressure box assembly 2 and the mounting frame assembly 1, and between the air collection box assembly 3 and the mounting frame assembly 1 are relatively large, the wear-resistant sealing strip 8 cannot achieve the expected sealing effect. In this case, sealing wedges 9 can be inserted into the gaps formed on both sides of the wear-resistant sealing strip 8. By setting the sealing wedges 9, they can play a combined sealing role with the wear-resistant sealing strip 8.

[0038] Specifically, the sealing wedge 9 in this embodiment is made of a sealing material from the prior art. It is wedge-shaped overall with one pointed end. In use, the pointed end of the sealing wedge 9 is inserted into the aforementioned gap. Depending on the width of the gap, the sealing wedge 9 can be pushed and moved until it completely seals the gap. Simultaneously, an appropriate number of sealing wedges 9 are selected based on the length of the gap to seal it.

[0039] To improve the sealing effect, multiple sealing protrusions 91 are evenly spaced along the slope direction on one of the inclined sides of the sealing wedge 9. These sealing protrusions 91 serve to prevent slippage and improve the sealing performance. The anti-slip function means that when the sealing wedge 9 is inserted into the gap, the sealing protrusions 91 can contact the wear-resistant sealing strip 8, the mounting frame assembly 1, the pressure box assembly 2, or the air collection box assembly 3, effectively preventing the sealing wedge 9 from slipping or detaching from the gap.

[0040] To enable positive pressure and negative pressure airtightness testing of the fireproof sealing material 4, in some embodiments, please refer to... Figures 1 to 2 The pressure box assembly 2 includes a pressure box 21, a centrifugal fan 22, a first pipe 23, a second pipe 24, and multiple air valves 25. The pressure box 21 is used to seal and connect the mounting frame assembly 1. The centrifugal fan 22 is located outside the pressure box 21. One end of the first pipe 23 is connected to the outlet of the centrifugal fan 22, and the other end is connected to the pressure box 21. One end of the second pipe 24 is connected to the outlet of the centrifugal fan 22, and the other end is connected to the end of the second pipe 24 closest to the pressure box 21. Air valves 25 are installed in the middle of both the first pipe 23 and the second pipe 24. By adjusting the opening and closing of the multiple air valves 25, the pressure inside the pressure box 21 can be controlled to be positive or negative pressure. By reasonably controlling the running direction of the centrifugal fan 22 and reasonably controlling the opening and closing of the four air valves 25, it is possible to control the positive pressure blowing and negative pressure exhaust into the pressure box 21, thereby enabling positive pressure air tightness testing or negative pressure air tightness testing of the fireproof sealing material 4. The switching between positive and negative pressure is achieved by opening and closing the four air valves 25.

[0041] Specifically, all four air valves 25 are existing technologies, capable of controlling the opening and closing of the first pipe 23 and the second pipe 24, and are electrically connected to the control system 5. The control system 5 can control the operation of the four air valves 25 respectively, thereby achieving the switching operation of positive pressure and negative pressure for airtightness testing.

[0042] In some embodiments, please refer to Figures 1 to 2 The centrifugal fan 22 is a double-impeller high-pressure vortex fan. The pressure box assembly 2 also includes a movable frame 26, to which both the pressure box 21 and the centrifugal fan 22 are connected. Wheels 6 are located at the bottom of the movable frame 26 to allow for flexible movement of the frame 26.

[0043] like Figure 1 As shown, in this embodiment, a machine vision inspection component 10 is connected to the side wall of the mounting frame component 1. The machine vision inspection component 10 can perform machine vision inspection on the fireproof sealing material 4 before it is installed on the mounting frame component 1. That is, it can perform image acquisition and non-contact recognition on the appearance of the fireproof sealing material 4. If there are cracks, fissures, or stains on the appearance of the fireproof sealing material 4, they can be identified by machine vision.

[0044] The fire-stopping material 4 is inspected by machine vision using the machine vision inspection component 10. If the above defects are detected, the fire-stopping material 4 is considered unqualified and airtightness testing is unnecessary. If the above defects are not detected, it is considered qualified and airtightness testing can be performed. By setting up the machine vision inspection component 10, it can be seen as a pre-inspection of the fire-stopping material 4 before airtightness testing.

[0045] The machine vision inspection component 10 in this embodiment adopts existing technology and internally stores a database capable of determining whether the fireproof sealing material 4 has defects. The machine vision inspection component 10 includes hardware and software components. The hardware component includes an image acquisition device, sensors, and a computing platform. The software component includes graphics processing algorithms, feature extraction and matching, and machine learning models. The image acquisition device includes a CCD camera, which is mounted on the side wall of the mounting frame assembly 1 and captures images of the fireproof sealing material 4 not yet mounted to the mounting frame assembly 1, collecting images from various locations. The CCD camera can be rotated and adjusted to capture images of different locations on the fireproof sealing material 4. The processes of image analysis, recognition, and judgment after image acquisition can be found in existing technologies.

[0046] In some embodiments, please refer to Figures 1 to 2 A shock absorber 27 is provided between the centrifugal fan 22 and the movable frame 26. The shock absorber 27 is used to buffer and dampen the centrifugal fan 22. The shock absorber 27 uses the physical damping method in the prior art to dampen the centrifugal fan 22. The shock absorber 27 is installed at the bottom of the centrifugal fan 22 and is located inside the movable frame 26 and near its lower end.

[0047] In this embodiment, the centrifugal fan 22 and the pressure box 21 are positioned close to each other, thus shortening the air path for efficient testing. The centrifugal fan 22 has a power of 2.2KW.

[0048] In some embodiments, please refer to Figures 1 to 2A ladder 28 is connected to the outside of the pressure box assembly 2, which is used for personnel to climb. The detection device of this invention is compatible with sensors and differential pressure methods, and can adapt to the needs of more types of detection methods. The ladder 28 is set at an angle, with its upper end hanging on the upper end of the pressure box assembly 2 and its lower end placed on the ground, so that it can be climbed by personnel.

[0049] The mobile airtightness testing device for fireproof sealing materials of the present invention has the following beneficial effects: 1) This application solves the problem of specimen installation during the airtightness test and the problem of repeated installation during the subsequent fire resistance test by setting up the installation frame assembly 1 for sequential airtightness and fire resistance tests. The installation frame assembly 1 is made of thickened cast iron profiles, and its load-bearing capacity meets the test requirements. The hollow brick wall 13 is constructed by masonry, and the installation method is consistent with the actual working conditions of the product, so that the product performance is objectively presented.

[0050] 2) This application solves the problem of limited space during the airtightness test of the fireproof sealing material 4 by setting up an assembly frame 1, a pressure chamber assembly 2, and an air collection chamber assembly 3 that can be combined with each other. In the prior art, the samples are generally large in volume, irregular in shape, and heavy after they are made. Moving the samples requires the use of an overhead crane. Therefore, this application divides the entire equipment into three parts: the assembly frame 1, the pressure chamber assembly 2, and the air collection chamber assembly 3. When the sample is not moved, the pressure chamber assembly 2 and the air collection chamber assembly 3 can be moved independently. The three parts can be combined to conduct the airtightness test.

[0051] 3) This application solves the problem of large footprint of existing test equipment by setting up the aforementioned mounting frame assembly 1, pressure chamber assembly 2, and air collection chamber assembly 3. After the airtightness test is completed, the pressure chamber assembly 2 and air collection chamber assembly 3 can be pushed open, and the mounting frame assembly 1 can be used interchangeably with the fire resistance test assembly (existing technology, used for fire resistance performance testing of fireproof sealing material 4) to conduct the fire resistance test. No secondary disassembly and assembly is required during the test, reducing one disassembly and assembly step, allowing direct fire resistance testing. Unused pressure chamber assembly 2 and air collection chamber assembly 3 can be stored in an unused location.

[0052] 4) During the experiment, this application can select different pressure measurement methods, such as sensor method and differential pressure method, to verify the data, which solves the problem of low test accuracy and avoids the error caused by the inapplicability of a single method.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mobile airtightness testing device for fireproof sealing materials, characterized in that, include: A mounting frame assembly is provided to accommodate fire-resistant sealing material to be tested for air tightness, wherein the outer peripheral wall of the fire-resistant sealing material is detachably connected to the inner wall of the mounting frame assembly. A pressure box assembly is sealed to the front side of the mounting frame assembly, and the pressure box assembly is suitable for performing airtightness testing on the fireproof sealing material. An air collection box assembly is sealed to the rear side of the mounting frame assembly and is disposed opposite to the pressure box assembly. The air collection box assembly is adapted to collect leaked gas during airtightness testing. After the air tightness test of the fireproof sealing material is completed and the fireproof sealing material remains intact, the pressure box assembly and the air collection box assembly are moved and detached from the mounting frame assembly, and the fire resistance test assembly performs a fire resistance test on the fireproof sealing material. The mounting frame assembly is connected to multiple quick-press heads, which are used for detachable connection to the pressure box assembly to achieve a sealed connection between the pressure box assembly and the mounting frame assembly; wherein the stroke of the quick-press heads is adjustable. Both the pressure box assembly and the air collection box assembly are equipped with multiple wheels at their bottom ends to enable them to move. The installation framework components include: frame; A mounting bracket is connected to the inner side of the frame; A hollow brick wall is connected to the inner side of the fixing frame and its interior forms an installation area for accommodating fireproof sealing material to be tested for air tightness. The outer wall of the fireproof sealing material is connected to the inner wall of the hollow brick wall. The multiple quick-press heads are connected to the fixed frame or the hollow brick wall and are located above and below the fireproof sealing material.

2. The mobile airtightness testing device for fireproof sealing materials as described in claim 1, characterized in that, Also includes: A control system is electrically connected to the pressure tank assembly and the air collection tank assembly, respectively, and is used to control the operation of the pressure tank assembly and the air collection tank assembly.

3. The mobile airtightness testing device for fireproof sealing materials as described in claim 1, characterized in that, Both the pressure box assembly and the air collection box assembly have wear-resistant sealing strips on their end faces for connecting to the mounting frame assembly. The wear-resistant sealing strips are used to seal the gaps between the pressure box assembly or the air collection box assembly and the mounting frame assembly.

4. The mobile airtightness testing device for fireproof sealing materials as described in claim 1, characterized in that, The pressure box assembly includes a pressure box, a centrifugal fan, a first pipe, a second pipe, and multiple air valves. The pressure box is used to seal and connect the mounting frame assembly. The centrifugal fan is located outside the pressure box. One end of the first pipe is connected to the air outlet of the centrifugal fan, and the other end is connected to the pressure box. One end of the second pipe is connected to the air outlet of the centrifugal fan, and the other end is connected to the end of the second pipe near the pressure box. The air valves are installed in the middle of both the first pipe and the second pipe. By adjusting the opening and closing of the multiple air valves, the pressure inside the pressure box can be controlled to be positive or negative.

5. The mobile airtightness testing device for fireproof sealing materials as described in claim 4, characterized in that, The centrifugal fan is a double-impeller high-pressure vortex fan, and the pressure box assembly also includes a movable frame, with both the pressure box and the centrifugal fan connected to the movable frame.

6. The mobile airtightness testing device for fireproof sealing materials as described in claim 5, characterized in that, A shock absorber is provided between the centrifugal fan and the movable frame, and the shock absorber is used to buffer and dampen the centrifugal fan.

7. The mobile airtightness testing device for fireproof sealing materials as described in claim 1, characterized in that, The pressure box assembly is connected to a ladder on the outside, which is used for personnel to climb.

Images