Building metal plate roof upright lockrand seam air tightness detection device and detection method

Abstract

The invention discloses a building metal plate roof upright lockrand seam air tightness detection device and method, the device comprises a self-moving trolley and an air tightness detection assembly arranged on the self-moving trolley, the air tightness detection assembly comprises an air pump, an air bag and an air pressure sensor, the air bag comprises a reference cabin and a detection cabin, and the air pressure sensor is arranged in the reference cabin. The air pressure sensor is connected with a controller of the self-moving trolley and used for detecting pressure values of a reference cabin and a detection cabin of the air bag, an opening is formed in the lower end of the air bag, and a plurality of air-bleed holes distributed in a linear mode are formed in the side, aligned with a building metal plate roof vertical lockrand seam, of the opening. And sealing rings are respectively arranged around all the air-bleed holes in the reference cabin and all the air-bleed holes in the detection cabin. According to the invention, the sealing state of the seam of the upright lockrand of the building metal plate roof can be detected, and the detection result of the detection cabin is verified through the pressure drop rate of the reference cabin, so that the detection error is reduced, and the seam airtightness detection accuracy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a device and a method for detecting air tightness of standing seam joints of building metal plate roofs. Background Art

[0002] In the steel structure factory building roofing project, the building roof usually adopts the metal plate roof vertical locking process. The sealing performance of the locking seam affects the thermal insulation and waterproof performance of the building roof. Therefore, how to perform sealing detection on the vertical locking seam of the building metal plate roof has become a technical problem that needs to be solved urgently in this field. Summary of the invention

[0003] The purpose of the present invention is to provide a device and method for detecting the air tightness of the standing seam joints of a building metal plate roof, so as to solve the problem of how to perform sealing detection on the standing seam joints of a building metal plate roof.

[0004] In order to solve the above technical problems, the present invention provides a technical solution: a device for detecting air tightness of standing seam joints of building metal plate roofs, comprising:

[0005] Self-moving cart;

[0006] An air tightness detection component is arranged on the self-moving vehicle, including an air pump, an airbag and an air pressure sensor. The air pump is connected to the airbag and is used to inflate the airbag. The airbag is arranged at the bottom of the self-moving vehicle. The airbag includes two independent reference cabins and detection cabins. The reference cabin and the detection cabin are respectively provided with the air pressure sensor. The air pressure sensor is connected to the controller of the self-moving vehicle and is respectively used to detect the pressure values ​​of the reference cabin and the detection cabin of the airbag. An opening that can be squeezed and fitted to the upright lock seam of the building metal plate roof is arranged upward at the lower end of the airbag. A plurality of air venting holes distributed in a linear shape are arranged on one side of the opening aligned with the upright lock seam of the building metal plate roof. Sealing rings are respectively arranged around all the air venting holes on the reference cabin and around all the air venting holes on the detection cabin.

[0007] Furthermore, in the air tightness detection device for standing seam joints of building metal plate roofs provided by the present invention, the airbag further comprises end sealing strips located at both ends of the sealing ring in the length direction.

[0008] Furthermore, in the air tightness detection device for standing seam joints of building metal plate roofs provided by the present invention, the self-moving vehicle includes a frame, wheels and a driving mechanism connected thereto.

[0009] Furthermore, in the air tightness detection device for standing seam joints of building metal plate roofs provided by the present invention, the driving mechanism includes a motor and a controller connected thereto, the controller is connected to a battery, and the motor drives the wheels to rotate via a transmission mechanism.

[0010] Furthermore, the present invention provides a device for detecting air tightness of standing seam joints of building metal plate roofs, wherein the self-moving vehicle also includes a remote controller and a receiver, wherein the receiver is connected to the controller and is used for remotely controlling the forward, backward, and start and stop of the self-moving vehicle.

[0011] Furthermore, in the building metal plate roof standing seam air tightness detection device provided by the present invention, the air pump is connected to the controller, and the remote controller is also used to remotely control the start and stop of the air pump.

[0012] Furthermore, in the air tightness detection device for standing seam joints of building metal plate roofs provided by the present invention, there are at least two air pumps, one of which is used to inflate the reference cabin, and the other is used to inflate the detection cabin.

[0013] In order to solve the above technical problems, another technical solution provided by the present invention is: a method for detecting air tightness of standing seam joints of building metal plate roofs, using the above-mentioned device for detecting air tightness of standing seam joints of building metal plate roofs, comprising:

[0014] The self-propelled trolley is placed on the metal sheet roof of the building, so that the airbag in a deflated state rides on the upright locking edge of the metal sheet roof of the building through the opening;

[0015] The self-moving trolley is controlled by a remote controller to move along the vertical locking edge of the metal sheet roof of the building to two adjacent inspection sections;

[0016] The reference chamber and the detection chamber of the airbag are inflated by remotely controlling the air pump, so that the reference chamber and the detection chamber of the airbag in the inflated state are clamped on two adjacent detection sections on the vertical locking seam of the building metal plate roof and are attached to the seam of the vertical locking seam of the building metal plate roof through the sealing ring so that the air release hole is aligned with the seam;

[0017] When the airbag is inflated to a predetermined pressure, the air pump is stopped by remote control, and the initial pressure values ​​of the reference cabin and the detection cabin of the airbag and the terminal pressure value after a predetermined time period are respectively detected by the air pressure sensor and fed back to the controller, and the controller calculates the pressure drop rates of the reference cabin and the detection cabin according to the initial pressure values ​​and the terminal pressure values, and the controller determines whether the seams of the detection section of the standing seam of the building metal plate roof corresponding to the detection cabin are in a sealed state according to the pressure drop rate of the detection cabin of the airbag, and verifies whether the seams of the detection section of the standing seam of the building metal plate roof corresponding to the reference cabin are in a sealed state according to the pressure drop rate of the reference cabin of the airbag.

[0018] Furthermore, the present invention provides a method for detecting air tightness of standing seam joints of metal sheet roofs.

[0019] When the pressure drop rates of the reference cabin and the detection cabin of the airbag are both less than a predetermined percentage, it is determined that the joints of the two adjacent detection sections of the vertical locking seams of the building metal sheet roof corresponding to the reference cabin and the detection cabin of the airbag are both in a sealed state;

[0020] When the pressure drop rate of the reference cabin of the airbag is less than a predetermined percentage and the pressure drop rate of the test cabin is greater than a predetermined percentage, and after the test cabin is inflated and pressurized by an air pump, if the pressure drop rate of the test cabin is still greater than the predetermined percentage, it is verified that the seams of the test section of the standing seam of the building metal sheet roof corresponding to the reference cabin are in a sealed state, and it is preliminarily determined that the seams of the test section of the standing seam of the building metal sheet roof corresponding to the test cabin are in a non-sealed state.

[0021] Furthermore, the present invention provides a method for detecting air tightness of the standing seam joints of metal sheet roofs. When it is preliminarily determined that the seam of the detection section of the standing seam of the metal sheet roof corresponding to the detection cabin is in a non-sealed state, the airbag is deflated, and the self-moving trolley is remotely controlled to retreat one detection section by a remote controller, so that the reference cabin is aligned with the seam of the detection section of the standing seam of the metal sheet roof where the previous detection cabin is located, and the air pump is started by the remote controller to inflate the reference cabin and the detection cabin of the airbag. When the pressure drop rate of the reference cabin of the airbag is less than a predetermined percentage, it is finally determined that the seam of the detection section of the standing seam of the metal sheet roof corresponding to the previous detection cabin is in a sealed state. When the pressure drop rate of the reference cabin of the airbag is greater than a predetermined percentage, it is finally determined that the seam of the detection section of the standing seam of the metal sheet roof corresponding to the previous detection cabin is in a non-sealed state and is marked.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The invention provides a device and method for detecting air tightness of standing seam joints of building metal plate roofs. A remote controller is used to control a self-moving trolley so that an air bag in a deflated state rides on the standing seam of the building metal plate roof through an opening and moves to two adjacent detection sections. An air pump is remotely controlled to start the air bag's reference chamber and the detection chamber so that the deflation holes are aligned with the joints and inflated to a predetermined pressure. After a predetermined time period has passed, a controller determines whether the joint of the detection section of the standing seam of the building metal plate roof corresponding to the detection chamber is in a sealed state according to the pressure drop rate of the detection chamber, thereby realizing detection of the sealing state of the joint of the standing seam of the building metal plate roof.

[0024] The present invention provides a device and method for detecting air tightness of standing seam joints of building metal plate roofs. A controller verifies whether the seam of a detection section of the standing seam of the building metal plate roof corresponding to a reference cabin is in a sealed state according to the pressure drop rate of a reference cabin of an airbag. Thus, through a double-cabin structural design, while performing sealing detection on the seam of a detection section in a traveling direction, the pressure drop rate of the seam of the previous detection section that has been detected by the detection cabin is verified through the reference cabin, thereby reducing detection errors and improving the accuracy of seam air tightness inspection.

[0025] The invention provides a device and method for detecting air tightness of standing seam joints of building metal plate roofs. By remotely controlling the movement and start and stop of a self-moving trolley and remotely controlling an air pump to inflate or stop inflation, the device and method for detecting air tightness of standing seam joints of building metal plate roofs can perform continuous detection of standing seam joints of building metal plate roofs, thereby improving detection efficiency.

[0026] The invention provides a device and method for detecting air tightness of standing seam joints of building metal plate roofs, which can provide position guidance for repairing construction of standing seam joints of building metal plate roofs by detecting air tightness of standing seam joints of building metal plate roofs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of a standing seam air tightness detection device for building metal plate roofs;

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the airbag;

[0029] Figure 3 It is a schematic diagram of the cross-sectional structure of the airbag;

[0030] Figure 4 It is a schematic diagram of the structure of the remote control;

[0031] Figure 5 It is a structural diagram of the standing seam of a building metal sheet roof;

[0032] Figure 6 It is a schematic diagram of the airbag standing seam along the metal roof of the building to detect the tightness of the seam;

[0033] As shown in the figure:

[0034] 100. Air tightness testing device for standing seam joints of building metal sheet roofs;

[0035] 110. self-propelled vehicle, 111. vehicle frame, 112. wheels, 113. driving mechanism, 114. motor, 115. transmission mechanism, 116. controller, 117. battery, 118. remote controller, 119. receiver;

[0036] 120. air tightness detection component, 121. air pump, 122. air bag, 1221. reference cabin, 1222. detection cabin, 1223. opening, 1224. air release hole, 1225. sealing ring, 1226. end sealing belt, 123. air pressure sensor, 124. air pressure display, 125. pressure gauge;

[0037] 200. Architectural metal sheet roofing, 210. Standing seam, 211. Seams. DETAILED DESCRIPTION

[0038] The present invention is described in detail below in conjunction with the accompanying drawings: The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0039] Please refer to Figures 1 to 5 The embodiment of the present invention provides a device 100 for detecting air tightness of standing seam joints of metal plate roofs, comprising a self-moving vehicle 110 and an air tightness detection assembly 120 thereon, wherein:

[0040] The self-moving car 110 can be a program-controlled car or a remote-controlled car. The self-moving car 110 can include a frame 111, wheels 112 and a driving mechanism 113 connected thereto. The driving mechanism 113 includes a motor 114 and a controller 116 connected thereto, the controller 116 is connected to a battery 117, and the motor 114 drives the wheels 112 to rotate through a transmission mechanism 115. The transmission mechanism 115 can be a belt drive, a gear drive, or a gearbox and other known technologies. The self-moving car 110 is controlled to move and start and stop through the driving mechanism 113 through the controller 116. The movement includes moving forward and backward. In order to realize remote control, the self-moving car 110 also includes a remote controller 118, at which time a receiver matching the remote controller 118 is connected to the controller 116, and the self-moving car 110 is remotely controlled to move and start and stop through the remote controller 118.

[0041] The air tightness detection component 120 is arranged on the self-moving vehicle 110, and includes an air pump 121, an air bag 122 and an air pressure sensor 123. The air pump 121 is connected to the air bag 122 and is used to inflate the air bag 122. The air bag 122 is arranged at the bottom of the self-moving vehicle 110. The air bag 122 includes two independent reference cabins 1221 and a detection cabin 1222. The reference cabin 1221 and the detection cabin 1222 are respectively provided with the air pressure sensor 123. The air pressure sensor 123 is connected to the controller 110 of the self-moving vehicle 110. 6 are connected, and are respectively used to detect the pressure values ​​of the reference cabin 1221 and the detection cabin 1222 of the airbag 122. The lower end of the airbag 122 is upwardly provided with an opening 1223 that can be pressed and fitted to the upright lock edge 210 of the building metal sheet roof 200. The opening 1223 is aligned with the side of the seam 211 of the upright lock edge 210 of the building metal sheet roof and is provided with a plurality of venting holes 1224 distributed in a linear shape. Sealing rings 1225 are respectively provided around all the venting holes 1224 on the reference cabin 1221 and around all the venting holes 1224 on the detection cabin 1222.

[0042] The shape of the opening 1223 can match the standing seam 210 and the seam 211 of the building metal sheet roof 200 .

[0043] The airbag 122 is tightly fitted with the seam 211 in the inflated state without leaking. The airbag 122 is evenly distributed with air holes 1224 on one side of the seam 211, which are in close contact with the seam 211, connecting the space between the airbag 122 and the seam 211, and the two are in a state of air pressure balance, so as to achieve air tightness detection. The airbag 122 is made of a rubber material with high elasticity. The shape, volume and air pressure state of the reference cabin 1221 and the detection cabin 1222 are completely consistent. The airbag 122 can form a reference cabin 1221 and a detection cabin 1222 through physical separation at the geometric center, or it can be two independent airbags 122. The reference cabin 1221 and the detection cabin 1222 can verify each other, so as to avoid the air pressure difference caused by non-seam airtightness reasons affecting the accuracy of the air tightness detection of the seam 211.

[0044] In order to ensure that the inflation pressure values ​​of the reference cabin 1221 and the detection cabin 1222 are the same, the airtightness detection component 120 further includes a pressure gauge 125 disposed on the air pump 121. In order to monitor the pressure values ​​of the reference cabin 1221 and the detection cabin 122 in real time, the airtightness detection component 120 may further include an air pressure display 124 connected to the controller 116 for displaying the pressure values ​​of the reference cabin 1221 and the detection cabin 1222 of the airbag 122 in real time.

[0045] The sealing ring 1225 completely seals the seam 211 to be inspected, which can improve the airtightness between the airbag 122 and the seam 211 and avoid the influence of contact leakage on the detection structure. In order to further improve the airtightness between the airbag 122 and the seam 211, the airbag 122 also includes end sealing strips 1226 located at both ends of the sealing ring 1225 in the length direction, which are used to align with the seam 211, seal the end of the seam 211 of the detection section, avoid contact leakage, and ensure that the vent hole 1224 is connected with the seam 211. The detection section is the basic unit for airtightness detection, and its length is the same as that of the detection cabin 1222 or the reference cabin 1221.

[0046] In order to realize the start and stop control of the air pump 121 , the building metal plate roof upright lock seam air tightness detection device 100 provided by the embodiment of the present invention, the air pump 121 is connected to the controller 116 , and the remote control 118 is also used to remotely control the start and stop of the air pump 121 .

[0047] In order to independently inflate the reference cabin 1221 and the detection cabin 1222, the building metal plate roof standing seam air tightness detection device 100 provided by the embodiment of the present invention has at least two air pumps 121, one of which is used to inflate the reference cabin 1221, and one of which is used to inflate the detection cabin 1222. Of course, there can be three air pumps 121, in which case the third air pump 121 is a standby.

[0048] Please refer to Figures 5 and 6 , and combined with Figures 1 to 4 The embodiment of the present invention further provides a method for detecting air tightness of a standing seam 210 joint 211 of a building metal plate roof 200, and the device 100 for detecting air tightness of a standing seam joint 211 of a building metal plate roof is used, comprising:

[0049] Step 310 , placing the self-propelled vehicle 110 on the building metal sheet roof 200 , so that the airbag 122 in a deflated state rides on the standing seam 210 of the building metal sheet roof through the opening 1223 .

[0050] Step 320, the remote controller 118 controls the self-moving vehicle 110 to move along the vertical seam 210 of the building metal sheet roof to two adjacent detection sections. Figure 6 Taking the previous detection section and the subsequent detection section in the figure as an example, the direction of the arrow is the detection direction, that is, the moving direction of the self-moving vehicle 110. At this time, the reference cabin 1221 and the detection cabin 1222 of the airbag 122 of the self-moving vehicle 110 are respectively aligned with the previous detection section and the subsequent detection section, as shown in the solid line reference cabin 1221 and the detection cabin 1222 in the figure.

[0051] Step 330, remote control the air pump 121 through the remote control 118 to start inflating the reference cabin 1221 and the detection cabin 1222 of the airbag 122, so that the reference cabin 1221 and the detection cabin 1222 of the airbag 122 in the inflated state are clamped on two adjacent detection sections on the upright lock seam 210 of the building metal sheet roof and are attached to the seam 211 of the upright lock seam 210 of the building metal sheet roof through the sealing ring 1225 so that the venting hole 1224 is aligned with the seam 211.

[0052] Step 340, when the airbag 122 is inflated to a predetermined pressure, for example, 0.1 MPa, the air pump 121 is controlled to stop by remote control, and the initial pressure values ​​of the reference cabin 1221 and the detection cabin 1222 of the airbag 122 and the terminal pressure value after a predetermined time period, for example, 2-3 minutes, are respectively detected by the air pressure sensor 123 and fed back to the controller 116, and the controller 116 calculates the pressure drop rates of the reference cabin 1221 and the detection cabin 1222 according to the initial pressure values ​​and the terminal pressure values, and the controller 116 determines whether the seam 211 of the detection section of the upright lock seam 210 of the building metal plate roof corresponding to the detection cabin 1222 is in a sealed state according to the pressure drop rate of the detection cabin 1222 of the airbag 122, and the controller 116 verifies whether the seam 211 of the detection section of the upright lock seam 210 of the building metal plate roof corresponding to the reference cabin 1221 is in a sealed state according to the pressure drop rate of the reference cabin 1221 of the airbag 122. That is, the detection cabin 1222 is used for detection, and the reference cabin 1221 is used for verification. Each time the airbag 122 moves a detection section, the detection cabin 1222 moves to the next detection section, and the reference cabin 1221 moves to the previous detection section that the detection cabin 1221 has already checked, that is, the current reference cabin 1221 coincides with the previous detection section of the detection cabin 1221. The predetermined pressure value of the airbag 122 inflation is the initial pressure value.

[0053] Repeat steps 320 to 340 to control the self-moving trolley 110 to move the airbag 122 along the detection direction of the standing seam 210 of the building metal plate roof to the next detection section joint 211 for detection and verification, thereby completing the airtightness detection of a standing seam 210.

[0054] The method for judging whether it is sealed can be:

[0055] Step 341, when the pressure drop rates of the reference cabin 1221 and the detection cabin 1222 of the airbag 122 are both less than a predetermined percentage, it is determined that the joints 211 of the two adjacent detection sections of the standing seam of the building metal sheet roof corresponding to the reference cabin 1221 and the detection cabin 1222 of the airbag 122 are both in a sealed state. The sealing of the verification detection section corresponding to the reference cabin 1221 is qualified, and the sealing of the inspection detection section corresponding to the detection cabin 1222 is qualified. The predetermined percentage includes but is not limited to 10%.

[0056] Step 342, when the pressure drop rate of the reference cabin 1221 of the airbag 122 is less than the predetermined percentage and the pressure drop rate of the detection cabin 1222 is greater than the predetermined percentage, after the detection cabin 1222 is inflated and pressurized by the air pump 121, if the pressure drop rate of the detection cabin 1222 is still greater than the predetermined percentage, verify that the joint 211 of the detection section of the building metal sheet roof upright seam 210 corresponding to the reference cabin 1221 is in a sealed state, and preliminarily determine that the joint 211 of the detection section of the building metal sheet roof upright seam 210 corresponding to the detection cabin 1222 is in a non-sealed state. That is, the sealing of the verification and detection section corresponding to the reference cabin 1221 is qualified, and the sealing of the inspection and detection section corresponding to the detection cabin 1222 is unqualified. Among them, when the pressure drop rate of the detection cabin 1222 is greater than the predetermined percentage, the detection cabin 1222 is inflated and pressurized by the air pump 121 to avoid false detection.

[0057] Step 343, when the pressure drop rate of the reference cabin 1221 of the airbag 122 is greater than a predetermined percentage and the pressure drop rate of the detection cabin 1222 is less than a predetermined percentage, after the reference cabin 1221 is inflated and pressurized by the air pump 121, if the pressure drop rate of the reference cabin 1221 is still greater than the predetermined percentage, verify that the joint 211 of the detection section of the building metal sheet roof standing seam 210 corresponding to the reference cabin 1221 is in a non-sealed state, and preliminarily determine that the joint 211 of the detection section of the building metal sheet roof standing seam 210 corresponding to the detection cabin 1222 is in a sealed state. That is, the sealing of the verification detection section corresponding to the reference cabin 1221 is unqualified, and the sealing of the inspection detection section corresponding to the detection cabin 1222 is qualified.

[0058] Step 344, when the pressure drop rates of the reference cabin 1221 and the detection cabin 1222 of the airbag 122 are both greater than a predetermined percentage, it is determined that the joint 211 of the building metal sheet roof standing seam 210 corresponding to the reference cabin 1221 and the detection cabin 1222 of the airbag 122 is in a non-sealed state. That is, the sealing of the verification and detection section corresponding to the reference cabin 1221 is unqualified, and the sealing of the inspection and detection section corresponding to the detection cabin 1222 is unqualified. At this time, there may be contact leakage.

[0059] In order to avoid misjudgment, the air tightness detection method of the joint 211 of the standing seam 210 of the building metal sheet roof 200 provided in the embodiment of the present invention is that when it is preliminarily determined that the joint 211 of the detection section of the building metal sheet roof standing seam 210 corresponding to the detection cabin 1222 is in a non-sealed state, the airbag 122 is deflated, and the self-moving trolley 110 is remotely controlled by the remote controller 118 to retreat one detection section, that is, the reference cabin 1221 and the detection cabin 1222 of the airbag 122 are moved back from Figure 6The solid line in the figure retreats to the joint 211 of the upright lock seam 210 of the building metal sheet roof at the dotted line position, so that the reference cabin 1221 is aligned with the joint 211 of the detection section of the upright lock seam 210 of the building metal sheet roof where the previous detection cabin 1222 is located, and the remote control 118 remotely controls the air pump 121 to start inflating the reference cabin 1221 and the detection cabin 1222 of the airbag 122. When the pressure drop rate of the reference cabin 1221 of the airbag 122 is less than the predetermined percentage, it is finally determined that the joint 211 of the detection section of the upright lock seam 210 of the building metal sheet roof corresponding to the previous detection cabin 1222 is in a sealed state. At this time, it can be determined that the result of the preliminary judgment of the detection cabin 1222 is a misjudgment caused by contact leakage. When the pressure drop rate of the reference cabin 1221 of the airbag 122 is greater than the predetermined percentage, it is finally determined that the joint of the detection section of the upright lock seam of the building metal sheet roof corresponding to the previous detection cabin 1222 is in a non-sealed state and marked.

[0060] The air tightness detection device 100 and detection method for the standing seam joints of the building metal plate roof provided by the embodiment of the present invention control the self-moving trolley 110 through the remote control 118 to make the air bag 122 in the deflated state ride on the standing seam 210 of the building metal plate roof through the opening 1223 to walk to two adjacent detection sections, and the remote control 118 remotely controls the air pump 121 to start the reference cabin 1221 of the air bag 122 and the deflation hole 1224 of the detection cabin 1222 to align with the seam and inflate until the predetermined pressure is stable. After a predetermined time period, the controller 116 determines whether the seam 211 of the detection section of the building metal plate roof standing seam 210 corresponding to the detection cabin 1222 is in a sealed state according to the pressure drop rate of the detection cabin 1222, thereby realizing the detection of the sealing state of the seam 211 of the building metal plate roof standing seam 210.

[0061] The embodiment of the present invention provides a device 100 and a method for detecting air tightness of standing seam joints of building metal sheet roofs. The controller 116 verifies whether the seam of the detection section of the standing seam of the building metal sheet roof corresponding to the reference cabin 1221 is in a sealed state according to the pressure drop rate of the reference cabin 1221 of the airbag 122. Thus, through the double-cabin structural design, while performing sealing detection on the seam of a detection section in the traveling direction, the pressure drop rate of the seam of the previous detection section detected by the detection cabin 1222 is verified through the reference cabin 1221, that is, the detection result of the detection cabin 1222 is verified by the pressure drop rate of the reference cabin 1221, so as to reduce detection errors and improve the accuracy of seam air tightness inspection.

[0062] The embodiment of the present invention provides an apparatus 100 and a method for detecting air tightness of standing seams of building metal plate roofs. The judgment criteria for air tightness detection of standing seams 210 of building metal plate roofs are: if the air pressure in the detection cabin 1222 is stable after pressurization, and the pressure drop rate is less than a predetermined percentage such as 10%, the air tightness is qualified; if the pressure drop rate of the detection cabin 1222 is greater than a predetermined percentage such as 10%, it is preliminarily judged that the air tightness is unqualified and needs to be verified by the reference cabin 1221. If the pressure drop rate of the reference cabin 1221 is still greater than 10%, it is judged through the reference cabin 1221 that the air tightness result of the previous detection of the detection cabin 1222 is correct. Otherwise, it can be judged that the previous detection is a contact leakage. It is judged through the reference cabin 1221 that the air tightness result of the previous detection of the detection cabin 1222 is incorrect. Finally, it is judged that the result of the previous judgment of the detection cabin 1222 is correct, that is, the air tightness is qualified.

[0063] The air tightness detection device 100 and detection method for the standing seam joints of metal sheet roofs provided in the embodiment of the present invention can remotely control the movement and start and stop of the self-moving trolley 110 and remotely control the inflation or stop of the air pump 121, so that the air tightness detection device 100 for the standing seam joints of metal sheet roofs of buildings can perform continuous inspection on the standing seams of metal sheet roofs of buildings, thereby improving the inspection efficiency.

[0064] The air tightness detection device 100 and detection method for the standing seam joints of the building metal plate roof provided in the embodiment of the present invention can provide position guidance for the repair construction of the standing seam joints of the building metal plate roof by detecting the air tightness of the seams 211 of the standing seam joints 210 of the building metal plate roof 200.

[0065] According to the results of the air tightness test, the edge locking repair process or the in-situ micro-pore glue injection method can be used. Linear repair process: Use an edge locking machine to repeat the edge locking operation on the section that fails the air tightness test. At this time, it is necessary to adjust the edge locking machine process parameters, such as controlling the edge locking machine travel speed, adjusting the edge locking plate pressure and other measures to improve the edge locking bite force. In-situ micro-pore glue injection: That is, use a rotary drilling machine to drill micro-holes on the surface of the metal plate at the part where the air tightness is unqualified, install a glue injection connector, connect the micro-holes at one end, and connect the glue injection gun at one end, and repair the unqualified part by grouting.

[0066] The air tightness detection device 100 and detection method for the standing seam joints of building metal plate roofs provided in the embodiment of the present invention play an important role in improving the thermal insulation performance of metal plate insulation roofs in severe cold regions by repairing the standing seams 210 that fail to seal.

[0067] The present invention is not limited to the above-mentioned specific implementation modes. Obviously, the above-mentioned embodiments are only some embodiments of the embodiments of the present invention, but not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention. Those skilled in the art can make other levels of modifications and changes to the present invention. In this way, if these modifications and changes of the present invention fall within the scope of the claims of the present invention, the present invention is also intended to include these changes and changes.

Claims

1. A device for detecting air tightness of standing seam joints of building metal plate roofs, characterized in that: include: Self-moving cart; An air tightness detection component is arranged on the self-moving vehicle, including an air pump, an airbag and an air pressure sensor. The air pump is connected to the airbag and is used to inflate the airbag. The airbag is arranged at the bottom of the self-moving vehicle. The airbag includes two independent reference cabins and detection cabins. The reference cabin and the detection cabin are respectively provided with the air pressure sensor. The air pressure sensor is connected to the controller of the self-moving vehicle and is respectively used to detect the pressure values ​​of the reference cabin and the detection cabin of the airbag. An opening that can be squeezed and fitted to the upright lock seam of the building metal plate roof is arranged upward at the lower end of the airbag. A plurality of air venting holes distributed in a linear shape are arranged on one side of the opening aligned with the upright lock seam of the building metal plate roof. Sealing rings are respectively arranged around all the air venting holes on the reference cabin and around all the air venting holes on the detection cabin.

2. The air tightness detection device for standing seam joints of building metal plate roofs according to claim 1, characterized in that: The airbag also includes end sealing strips located at both ends of the sealing ring in the length direction.

3. The air tightness detection device for standing seam joints of building metal plate roofs according to claim 1, characterized in that: The self-propelled vehicle comprises a vehicle frame, wheels and a driving mechanism connected thereto.

4. The air tightness detection device for standing seam joints of building metal plate roofs according to claim 3, characterized in that: The driving mechanism includes a motor and a controller connected thereto, the controller is connected to a battery, and the motor drives the wheel to rotate through a transmission mechanism.

5. The air tightness detection device for standing seam joints of building metal plate roofs according to claim 1, characterized in that: The self-moving vehicle also includes a remote controller and a receiver. The receiver is connected to the controller and is used for remotely controlling the forward, backward, start and stop of the self-moving vehicle.

6. The air tightness detection device for standing seam joints of building metal plate roofs according to claim 5, characterized in that: The air pump is connected to the controller, and the remote controller is also used to remotely control the start and stop of the air pump.

7. The air tightness detection device for standing seam joints of building metal plate roofs according to claim 1, characterized in that: There are at least two air pumps, one for inflating the reference cabin, and one for inflating the detection cabin.

8. A method for testing the air tightness of standing seam joints of metal roof panels, characterized in that: The air tightness detection device for the standing seam joints of the building metal plate roof according to claim 6 comprises: The self-propelled trolley is placed on the metal sheet roof of the building, so that the airbag in a deflated state rides on the upright locking edge of the metal sheet roof of the building through the opening; The self-moving trolley is controlled by a remote controller to move along the vertical locking edge of the metal sheet roof of the building to two adjacent inspection sections; The reference chamber and the detection chamber of the airbag are inflated by remotely controlling the air pump, so that the reference chamber and the detection chamber of the airbag in the inflated state are clamped on two adjacent detection sections on the vertical locking seam of the building metal plate roof and are attached to the seam of the vertical locking seam of the building metal plate roof through the sealing ring so that the air release hole is aligned with the seam; When the airbag is inflated to a predetermined pressure, the air pump is stopped by remote control, and the initial pressure values ​​of the reference cabin and the detection cabin of the airbag and the terminal pressure value after a predetermined time period are respectively detected by the air pressure sensor and fed back to the controller, and the controller calculates the pressure drop rates of the reference cabin and the detection cabin according to the initial pressure values ​​and the terminal pressure values, and the controller determines whether the seams of the detection section of the standing seam of the building metal plate roof corresponding to the detection cabin are in a sealed state according to the pressure drop rate of the detection cabin of the airbag, and verifies whether the seams of the detection section of the standing seam of the building metal plate roof corresponding to the reference cabin are in a sealed state according to the pressure drop rate of the reference cabin of the airbag.

9. The method for detecting air tightness of standing seam joints of building metal sheet roofs according to claim 8, characterized in that: When the pressure drop rates of the reference cabin and the detection cabin of the airbag are both less than a predetermined percentage, it is determined that the joints of the two adjacent detection sections of the vertical locking seams of the building metal sheet roof corresponding to the reference cabin and the detection cabin of the airbag are both in a sealed state; When the pressure drop rate of the reference cabin of the airbag is less than a predetermined percentage and the pressure drop rate of the test cabin is greater than a predetermined percentage, and after the test cabin is inflated and pressurized by an air pump, if the pressure drop rate of the test cabin is still greater than the predetermined percentage, it is verified that the seams of the test section of the standing seam of the building metal sheet roof corresponding to the reference cabin are in a sealed state, and it is preliminarily determined that the seams of the test section of the standing seam of the building metal sheet roof corresponding to the test cabin are in a non-sealed state.

10. The method for detecting air tightness of standing seam joints of building metal sheet roofs according to claim 9, characterized in that: When it is preliminarily determined that the seam of the inspection section of the upright lock seam of the building metal sheet roof corresponding to the inspection cabin is in a non-sealed state, the airbag is deflated, and the self-moving trolley is remotely controlled to retreat one inspection section, so that the reference cabin is aligned with the seam of the inspection section of the upright lock seam of the building metal sheet roof where the previous inspection cabin is located, and the air pump is started by remote control to inflate the reference cabin and the inspection cabin of the airbag. When the pressure drop rate of the reference cabin of the airbag is less than a predetermined percentage, it is finally determined that the seam of the inspection section of the upright lock seam of the building metal sheet roof corresponding to the previous inspection cabin is in a sealed state. When the pressure drop rate of the reference cabin of the airbag is greater than a predetermined percentage, it is finally determined that the seam of the inspection section of the upright lock seam of the building metal sheet roof corresponding to the previous inspection cabin is in a non-sealed state and is marked.

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