Intelligent detection equipment for air-tight door of civil air defense project

Abstract

The invention relates to the technical field of airtight fluid testing, in particular to intelligent detection equipment for an airtight door of civil air defense engineering, which comprises a cylindrical strip-shaped air bag arranged on the inner side of a civil air defense door frame body in a rectangular layout, an air distribution mechanism is extruded and clamped between the two ends of the air bag, and the side, away from the civil air defense door, of the air bag is covered with curtain cloth. A supporting mechanism is further arranged on the outer wall of the air bag. According to the intelligent detection equipment for the air-tight door of the civil air defense project, the cylindrical strip-shaped air bag is adapted to the door frame shape of the civil air defense door after being inflated and expanded, the air bag and the door frame extrude, the two ends of the air bag abut against and extrude each other, and the air bag and the civil air defense door plate extrude to form a matched rectangular closed-loop structure; a narrow closed space is formed among the door plate, the door frame, the door sealing strip and the air bag, and the narrow closed space can be used for rapid pressure boosting of one side of the civil defense door sealing strip, smoke testing, smoke consumption reduction and smoke leakage pollution avoiding in the smoke testing process.

Description

Technical Field

[0001] The present invention relates to the technical field of airtight fluid testing, and particularly to an intelligent detection device for airtight doors in civil air defense projects. Background Art

[0002] The airtight doors in civil air defense projects have high requirements for airtightness. After completion, the airtightness of the civil air defense doors needs to be detected. There are two conventional detection methods. One is that when the space in the civil air defense is limited and a ventilation and air-conditioning system is configured, after closing the civil air defense door, the air pressure in the civil air defense space is increased through the air-conditioning system, the pressure difference inside and outside the civil air defense door is detected and recorded, the ventilation duct is closed, and the change of the pressure difference inside and outside the civil air defense door is detected multiple times at regular intervals to judge the sealing performance of the civil air defense door. The other is that after closing the civil air defense door, smoke is directly sprayed at the sealing place, and a strong flashlight is used to observe whether smoke penetrates to the other side of the civil air defense door.

[0003] For these two conventional detection methods, the former makes use of the existing air-conditioning system in the building and only requires a handheld air pressure monitor for operation. The smoke blowing tool used in the latter is cheap and easy to obtain, and the operation process is simple and easy. However, the disadvantages are also obvious. For a large civil air defense space, the air-conditioning system reacts too slowly and it is difficult to judge whether there are other leakage points. And the method of blowing smoke along the sealing gap will cause a large amount of continuous diffusion of smoke, which obviously pollutes the operation environment greatly. Therefore, considering the advantages and disadvantages of the equipment involved in the two conventional detection methods, an intelligent detection device for airtight doors in civil air defense projects that is more stable and easy to use is proposed. Summary of the Invention

[0004] In view of the problems of slow reaction of the air-conditioning system and serious environmental pollution of the smoke spraying tool in the above or existing technology for detecting the airtightness of civil air defense sealing doors, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide an intelligent detection device for airtight doors in civil air defense projects.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: An intelligent detection device for an airtight door of a civil air defense project, including a cylindrical airbag arranged in a rectangular layout on the inner side of the civil air defense door frame. A gas distribution mechanism is squeezed and clamped between the two ends of the airbag, and a support mechanism is also arranged on the outer wall of the airbag; The gas distribution mechanism includes an air charging pipe. The two ends of the air charging pipe are respectively inserted into the two ports of the airbag. A pair of sleeves are hermetically slid on the peripheral wall of the air charging pipe between the two ends of the airbag, and the two sleeves are respectively hermetically clamped to the two ports of the airbag at the ends away from each other. The middle of the air charging pipe is cross-connected with a short pipe, and a smoke pipe is connected to the short pipe on the side away from the civil air defense door. The end of the short pipe close to the civil air defense door is sealed, and an insertion pipe is inserted into the end of the short pipe away from the civil air defense door. A chute one is opened along the generatrix of the insertion pipe on the side close to the smoke pipe; The support mechanism includes a vertical pipe. A pair of support rods one are symmetrically connected to the two ends of the vertical pipe by threads. A support rod two is slidably connected to the peripheral wall of the vertical pipe. The ends of the support rod one and the support rod two away from the vertical pipe both abut and support the outer wall of the airbag.

[0007] As a preferred scheme of the intelligent detection device for the airtight door of the civil air defense project of the present invention, wherein: The ends of the sleeves away from each other are fixedly connected with push plates. The push plates are located outside the ends of the airbag, and a cover plate is arranged inside the ends of the airbag and fixedly connected with the push plates. The push plates and the cover plates hermetically clamp the ports of the airbag, and the push plates and the cover plates are both sleeved on the air charging pipe without contact.

[0008] As a preferred scheme of the intelligent detection device for the airtight door of the civil air defense project of the present invention, wherein: A chute two is provided on the inner wall of the short pipe corresponding to the chute one. A spring and a stopper are slidably sleeved between the chute one and the chute two. The spring is located at the end of the stopper close to the civil air defense door, and the stopper is fixedly connected to the inner wall of the short pipe by screws.

[0009] As a preferred scheme of the intelligent detection device for the airtight door of the civil air defense project of the present invention, wherein: The chute one penetrates through the side wall of the insertion pipe. One end of the chute two penetrates through the open end of the short pipe parallel to the axis of the short pipe. The groove walls of the chute one and the chute two are continuous arc surfaces. The arc axes of the arc inner walls on both sides of the chute one and the chute two are coaxial, and the included angle of the arc inner walls on both sides of the chute one and the chute two with respect to the spring is greater than 180 degrees.

[0010] As a preferred scheme of the intelligent detection device for the airtight door of the civil air defense project of the present invention, wherein: A rubber pad is arranged at the closed end in the short pipe. When the spring is in a completely compressed state, the end of the insertion pipe located in the sleeve is between the connection of the air charging pipe and the short pipe. When the port of the insertion pipe abuts against the rubber pad, the chute one communicates with the smoke pipe.

[0011] As a preferred solution of the intelligent detection device for the airtight door of the civil air defense project of the present invention, wherein: the end of the short pipe away from the rubber pad is externally threaded with a nut, and the end of the short pipe away from the rubber pad is internally threaded with a blower.

[0012] As a preferred solution of the intelligent detection device for the airtight door of the civil air defense project of the present invention, wherein: the air inlet of the blower is vertically upward, and the air inlet of the blower is hermetically connected with a combustion tank. A grid plate is horizontally arranged in the combustion tank. Hooks and air holes are stamped on the side wall of the combustion tank towards the bottom surface of the grid plate. The top end of the combustion tank is open, and the top end of the combustion tank is hermetically and slidably sleeved with a tank cover, and the peripheral wall of the tank cover covers the air holes.

[0013] As a preferred solution of the intelligent detection device for the airtight door of the civil air defense project of the present invention, wherein: a curtain cloth is covered on the side of the airbag away from the civil air defense door. The edge of the curtain cloth is zipper-connected to the airbag, and a drawstring is arranged in the middle of the curtain cloth.

[0014] As a preferred solution of the intelligent detection device for the airtight door of the civil air defense project of the present invention, wherein: the airbag is bent at right angles at the four corners of the civil air defense door frame, and at the bent parts of the airbag, pressing blocks are abutted at the inner corner positions. The back of the pressing block is connected with a T-shaped support rod three, and the support rod three is hinged with a support rod two.

[0015] As a preferred solution of the intelligent detection device for the airtight door of the civil air defense project of the present invention, wherein: pressing plates are hinged at the ends of the support rod one and the support rod two away from the vertical pipe and the two short sides of the T-shape of the support rod three, and the pressing plates are arc-shaped and are in abutting contact with the outer wall of the airbag.

[0016] The beneficial effects of the intelligent detection device for the airtight door of the civil air defense project of the present invention: An intelligent detection device for the airtight door of the civil air defense project of the present invention adapts to the shape of the civil air defense door frame after the cylindrical airbag is inflated. The airbag is squeezed with the door frame, the two ends of the airbag are mutually squeezed, and the airbag is squeezed with the civil air defense door panel to form a matching rectangular closed-loop structure, forming a narrow closed space between the door panel, the door frame, the door seal strip and the airbag. This narrow closed space can be used for rapid pressure increase on one side of the civil air defense door seal strip, smoke testing, reducing the amount of smoke used, and avoiding external leakage and pollution during smoke testing.

[0017] An intelligent detection device for the airtight door of the civil air defense project of the present invention. Its gas distribution mechanism can be switched between the airbag inflating pipe and the smoke pipe by simply rotating the nut. Moreover, components such as the inflating pipe and the sleeve of the gas distribution mechanism also provide sealing and length self-adaptive adjustment for the two ends of the airbag, ensuring structural stability and movement guidance.

[0018] An intelligent detection device for the airtight door of civil air defense project of the present invention tightens the airbag through the support mechanism, making up for the problem of insufficient extrusion force on the civil air defense door at the middle of the straight section of the airbag only in the inflated state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural view of one side of the door frame after the intelligent detection device for the airtight door of civil air defense project is assembled with the civil air defense door.

[0021] Figure 2 is Figure 1 a schematic structural view of one side of the door panel after the civil air defense door is opened.

[0022] Figure 3 It is a schematic assembly structure view of the airbag and the support mechanism of the intelligent detection device for the airtight door of civil air defense project.

[0023] Figure 4 It is a partial structural schematic view of the support mechanism of the intelligent detection device for the airtight door of civil air defense project.

[0024] Figure 5 It is a sectional view of the assembly structure of the airbag of the intelligent detection device for the airtight door of civil air defense project and the civil air defense door.

[0025] Figure 6 It is a sectional view of the assembly structure of the air distribution structure and the airbag of the intelligent detection device for the airtight door of civil air defense project.

[0026] Figure 7 is Figure 6 an enlarged view of the structure at A in

[0027] Figure 8 It is a sectional view of the combustion tank structure of the intelligent detection device for the airtight door of civil air defense project.

[0028] Figure 9 is Figure 8 an enlarged view of the structure at B in

[0029] Figure 10 It is a partial sectional view of the air distribution mechanism of the intelligent detection device for the airtight door of civil air defense project.

[0030] Figure 11 is Figure 10 a decomposition view of the partial structure in

[0031] In the figure: 100, airbag; 101, curtain cloth; 102, blower; 103, combustion tank; 104, grid plate; 105, tank cover; 101a, drawstring; 200, air distribution mechanism; 201, charging pipe; 202, sleeve; 203, short pipe; 204, smoke pipe; 205, insertion pipe; 206, push plate; 207, cover plate; 208, spring; 209, stop block; 210, rubber pad; 211, nut; 203a, chute two; 205a, chute one; 300, support mechanism; 301, vertical pipe; 302, support rod one; 303, support rod two; 304, support rod three; 305, pressing block; 306, pressing plate; 400, civil air defense door. Specific embodiments

[0032] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0033] Example 1, referring to Figures 1 to 11 , which is the first embodiment of the present invention. This embodiment provides an intelligent detection device for the airtight door of a civil air defense project, which can achieve local addition inside the door frame of the civil air defense door 400 and detect the airtightness of the civil air defense door 400 through a small amount of smoke. As shown in Figure 2 and Figure 5 , it includes a cylindrical strip-shaped airbag 100 arranged in a rectangular layout on the inner side of the frame of the civil air defense door 400, and a support mechanism 300 is also arranged on the outer wall of the airbag 100; as shown in Figure 3 , an air distribution mechanism 200 is squeezed and clamped between the two ends of the airbag 100. As shown in Figure 6 and Figure 7 , the air distribution mechanism 200 includes a charging pipe 201. The two ends of the charging pipe 201 are respectively inserted into the two ports of the airbag 100. A pair of sleeves 202 are hermetically slid on the peripheral wall of the charging pipe 201 between the two ends of the airbag 100, and the two ends of the two sleeves 202 away from each other are hermetically clamped to the two ports of the airbag 100 respectively. As shown in Figure 5 and Figure 10 , the middle of the charging pipe 201 is cross-connected with a short pipe 203, and a smoke pipe 204 is connected to the short pipe 203 on the side away from the civil air defense door 400. The end of the short pipe 203 close to the civil air defense door 400 is sealed, and an insertion pipe 205 is inserted into the end of the short pipe 203 away from the civil air defense door 400. A chute one 205a is opened along the generatrix of the insertion pipe 205 on the side close to the smoke pipe 204; as shown in Figure 3 , Figure 4 , the support mechanism 300 includes a vertical pipe 301. The two ends of the vertical pipe 301 are symmetrically connected with support rods one 302 by threads. A support rod two 303 is slidably connected to the peripheral wall of the vertical pipe 301, and the ends of the support rod one 302 and the support rod two 303 away from the vertical pipe 301 both abut against and support the outer wall of the airbag 100.

[0034] Specifically, as shown in Figure 7 , one end of the sleeve 202 away from each other is fixedly connected with a push plate 206. The push plate 206 is located outside the end of the airbag 100, and a cover plate 207 is arranged inside the end of the airbag 100 and fixedly connected with the push plate 206. The push plate 206 and the cover plate 207 hermetically clamp the port of the airbag 100, and both the push plate 206 and the cover plate 207 are sleeved on the inflation pipe 201 without contact.

[0035] As shown in Figure 10 and Figure 11 , a chute two 203a is provided on the inner wall of the short pipe 203 corresponding to the chute one 205a. A spring 208 and a stop block 209 are slidably sleeved between the chute one 205a and the chute two 203a. The spring 208 is located at one end of the stop block 209 close to the civil air defense door 400, and the stop block 209 is fixedly connected with the inner wall of the short pipe 203 by screws. The chute one 205a penetrates through the side wall of the insertion pipe 205, and one end of the chute two 203a penetrates through the open end of the short pipe 203 parallel to the axis of the short pipe 203. The groove walls of the chute one 205a and the chute two 203a are continuous arc surfaces, and the arc axes of the arc inner walls on both sides of the chute one 205a and the chute two 203a are coaxial. The arc inner walls on both sides of the chute one 205a and the chute two 203a wrap the spring 208 at an angle greater than 180 degrees. A rubber pad 210 is arranged at the closed end inside the short pipe 203. When the spring 208 is in a fully compressed state, one end of the insertion pipe 205 located inside the sleeve 202 is between the connection of the inflation pipe 201 and the short pipe 203. When the port of the insertion pipe 205 abuts against the rubber pad 210, the chute one 205a communicates with the smoke pipe 204. The end of the short pipe 203 away from the rubber pad 210 is externally threaded and connected with a nut 211.

[0036] As shown in Figure 8 , the end of the short pipe 203 away from the rubber pad 210 is internally threaded and connected with a blower 102. The air inlet of the blower 102 is vertically upward, and the air inlet of the blower 102 is hermetically connected with a combustion tank 103. A grid plate 104 is horizontally arranged inside the combustion tank 103. As shown in Figure 9 , hooks and air holes are stamped on the bottom surface of the grid plate 104 from the side wall of the combustion tank 103. The top end of the combustion tank 103 is open, and a tank cover 105 is hermetically slidably sleeved on the top end of the combustion tank 103, and the peripheral wall of the tank cover 105 covers the air holes.

[0037] As shown in Figure 3 , the airbag 100 is bent at a right angle at the four corners of the door frame of the civil air defense door 400, and the bent parts of the airbag 100 are all located at the inner corner positions and abutted against a pressing block 305. The back of the pressing block 305 is connected with a T-shaped support rod three 304. The support rod three 304 is hinged with a support rod two 303. As shown in Figure 4As shown in the figure, pressing plates 306 are hinged to one end of the first support rod 302, the second support rod 303 away from the vertical pipe 301, and the two short sides of the T shape of the third support rod 304. The pressing plates 306 are arc-shaped and are in contact with and abutted against the outer wall of the airbag 100.

[0038] Combined with the prior art, the working principle and advantages of the present invention are further described: In order to bear the heavy door panel, the door frame part of the existing civil air defense sealing door generally has a relatively large width. A stepped protrusion is designed on the side of the door frame close to the door panel for installing a sealing strip to facilitate the pressing and sealing of the door panel. Based on the structural characteristics of the above conventional civil air defense sealing door, by sealing one side of the civil air defense sealing door, the purpose of reducing the size of the enclosed space for the pressure test can be achieved, and the leakage of the test smoke can also be prevented. This is a better detection method. However, there are differences in the sizes and some detailed structural features of the frames of different civil air defense sealing doors, resulting in difficulties in using general equipment for sealing detection of different civil air defense sealing doors. To achieve the sealing of one side of the civil air defense sealing door, it is necessary to cover one side of the civil air defense sealing door, which involves technical problems such as how to seal and connect the edge of the covering with different civil air defense sealing doors and how the covering has good installation compatibility with civil air defense sealing doors of different sizes.

[0039] The present invention provides an intelligent detection device for civil air defense engineering airtight doors, mainly providing a sealing structure for flexibly sealing civil air defense doors 400 of different sizes and frame shapes. The sealing structure includes a strip-shaped inflatable and expandable airbag 100, a support mechanism 300 for helping the outer wall of the airbag 100 to closely adhere to the side wall of the door frame of the civil air defense door 400, and a gas distribution mechanism 200 for simultaneously satisfying the inflation of the airbag 100, the inflation adjustment of the airbag 100, and the release of smoke. Refer to Figure 5 , after the airbag 100 is inflated and expanded, restricted by the door frame of the civil air defense door 400, the airbag 100 and the door frame form a matching rectangular closed-loop structure. The two ends of the airbag 100 are squeezed and abutted together. The outer peripheral wall of the rectangular frame shape of the airbag 100 is squeezed and adhered to the inner wall of the door frame. The side wall of the airbag 100 is also squeezed and adhered to the door panel of the civil air defense door 400, thereby forming a narrow enclosed space among the door panel, the door frame, the door sealing strip, and the airbag 100. As Figure 2As shown, the airbag 100 is tightened by the support mechanism 300, which makes up for the problem that the squeezing force of the middle part of the straight section of the airbag 100 in the inflated state alone on the civil air defense door 400 is insufficient. The air distribution mechanism 200 is clamped between the two ends of the airbag 100, and the flexible characteristics of the airbag 100 are used to maintain the sealing effect among the air distribution mechanism 200, the airbag 100 and the civil air defense door 400. The air distribution mechanism 200 functions as a three-way valve. Among them, the horizontally arranged air charging pipe 201 is inserted into the airbag 100 to be responsible for inflating and maintaining pressure for it. Among them, the pipe orifice of the smoke pipe 204 extends into the closed and narrow space formed by the airbag 100 and the civil air defense door 400, and is responsible for releasing smoke and pressurizing the inside. Whether there is smoke seeping out from the other side of the civil air defense door 400 can be used to judge the sealing effect of the civil air defense door 400.

[0040] To achieve the above functional objectives, the present invention also involves the following technical details: First, the adaptive adjustment of the length of the airbag 100. The length of the airbag 100 is greater than the length of the frame of the civil air defense door 400, and the two ends of the airbag 100 are open. As Figure 7 shown, the air charging pipe 201 of the air distribution mechanism 200 is inserted from the port of the airbag 100. There is an airtight sliding sleeve 202 on the air charging pipe 201. The end of the sleeve 202 is hermetically pressed against the port of the airbag 100 through a circular push plate 206 and a cover plate 207, closing the port of the airbag 100, and only leaving the air charging pipe 201 to communicate the inside and outside of the airbag 100. The total length of the airbag 100 remains unchanged. When the air distribution mechanism 200 and the airbag 100 are relatively stationary, the sleeve 202 moves along the air charging pipe 201 towards the inside of the airbag 100, which can drive the end of the airbag 100 to continuously turn inwards towards the inside of the airbag 100. The greater the distance that the sleeve 202 moves towards the inside of the airbag 100, the more the overlapping part of the end of the airbag 100 turns inwards, thus shortening the apparent length of the airbag 100. On the contrary, when the sleeve 202 moves towards the outer end of the airbag 100, the apparent length of the airbag 100 increases; In the inflated state of the airbag 100, the internal pressure will cause the airbag 100 to expand, which is manifested in the overlapping part of the ends of the airbag 100. The internal pressure exerts a thrust on the sleeve 202 towards the outer end of the airbag 100, and makes the outer layer of the overlapping part expand outwards and the inner layer of the overlapping part contract towards the center, so that the two ends of the airbag 100 clamp the air distribution mechanism 200, and at the same time, the apparent length of the airbag 100 is adaptively adjusted, and a large enough end contact area is formed to wrap the air distribution mechanism 200. In addition, in addition to the function of sealing and clamping the port of the airbag 100, the push plate 206 and the cover plate 207 are also used to increase the force-bearing area of the sleeve 202 in the gas pressure environment, so that the sleeve 202 can obtain a higher and more stable thrust after the airbag 100 is inflated; Second, the switching between the air charging pipe 201 and the smoke pipe 204. As Figure 10As shown in the figure, when the nut 211 is tightened on the short pipe 203, the insertion pipe 205 will be pulled outwards relative to the short pipe 203. At the same time, the first chute 205a follows the insertion pipe 205 and moves towards the stopper 209, compressing the spring 208. When the first chute 205a completely disengages from the smoke pipe 204, the interior of the insertion pipe 205, the first chute 205a and the smoke pipe 204 are sealed. At this time, the port of the insertion pipe 205 is exactly at the connection position of the inflation pipe 201 and the short pipe 203, and the insertion pipe 205 is in communication with the inflation pipe 201. At this time, when the blower 102 works, it inflates the airbag 100; When the nut 211 is loosened relative to the short pipe 203, under the reset push of the spring 208, the insertion pipe 205 is reset until the port of the insertion pipe 205 abuts against the rubber gasket 210 and squeezes for sealing. At this time, the side wall of the insertion pipe 205 blocks the connection port of the inflation pipe 201 and the short pipe 203, and the first chute 205a moves to the interface position of the smoke pipe 204 and the short pipe 203. The insertion pipe 205 is in communication with the smoke pipe 204 through the first chute 205a. At this time, the smoke cake can be ignited on the grid plate 104 of the combustion tank 103. The blower 102 pumps the smoke into the narrow closed gap between the airbag 100 and the civil air defense door 400 through the smoke pipe 204. And as the smoke is continuously pumped in, the pressure in the closed space increases. At this time, it will be easier to detect the sealing leakage points of the civil air defense door 400 on the other side of the civil air defense door 400. When the smoke is not needed, cover the combustion tank 103 with the tank cover 105 to isolate the air flow and make the smoke cake go out.

[0041] Thirdly, the support mechanism 300 of the device, as Figure 3 shown in the figure, the number of the vertical pipe 301 and a pair of first struts 302 is fixed. By rotating the vertical pipe 301 relative to the first struts 302, the pair of first struts 302 with symmetric threads are synchronously extended or retracted relative to the vertical pipe 301, which is used to build the core part of the support mechanism 300. The number of the third struts 304 is determined according to the number of the frame corners of the civil air defense door 400, usually four. The number of the second struts 303 is determined according to the height of the civil air defense door 400. The higher the height of the civil air defense door 400, the longer the vertical section of the airbag 100, and the more the second struts 303 are needed; Among them, the length of the second strut 303 is greater than the distance between the vertical pipe 301 and the vertical section of the airbag 100. The second strut 303 utilizes the high friction coefficient between the airbag 100 (usually made of rubber or elastic material with a rubber interlayer) and the pressing block 305, as Figure 3As shown in the figure, for the second support rod 303, only the end that is sleeved with the vertical pipe 301 needs to be moved towards the horizontal line where the pressing plate 306 is located, and then the end of the second support rod 303 is fastened to the vertical pipe 301 with screws, so as to tighten the vertical pipe 301 and the airbag 100. The second support rods 303 should be evenly arranged on both sides of the vertical pipe 301. The fixing method of the third support rod 304 is the same as that of the second support rod 303. Since the frame corners of the civil air defense door 400 are generally right angles and there are few rounded corner designs, and the airbag 100 with a right-angle bend tends to have a smooth transition at the tip of its fold angle and is difficult to directly fit the inner wall of the corner of the civil air defense door 400. Therefore, a pressing block 305 is designed at the end of the third support rod 304. As Figure 4 shown, the included angle between the two contact surfaces of the pressing block 305 and the airbag 100 is about 45 degrees. The pressing block 305 is used to push the fold angle of the airbag 100 into the corner of the civil air defense door 400 so that the two fit together.

[0042] In summary, for an intelligent detection device for a closed door in a civil air defense project of the present invention, after the cylindrical airbag 100 is inflated and expanded, it adapts to the shape of the door frame of the civil air defense door 400. The airbag 100 is squeezed with the door frame, the two ends of the airbag 100 are mutually abutted and squeezed, and the airbag 100 is squeezed with the plate of the civil air defense door 400 to form a matching rectangular closed-loop structure, and a narrow closed space is formed between the door panel, the door frame, the door seal strip and the airbag 100. This narrow closed space can be used for rapid pressure increase on one side of the seal strip of the civil air defense door 400, smoke testing, reducing the amount of smoke used, and avoiding external leakage and pollution during smoke testing.

[0043] Example 2, refer to Figure 1 and Figure 2 , this embodiment provides a sealing performance compensation structure. Its structure is that a curtain cloth 101 is covered on the side of the airbag 100 away from the civil air defense door 400. The edge of the curtain cloth 101 is connected to the airbag 100 by a zipper, and a drawstring 101a is arranged in the middle of the curtain cloth 101. Since the seal strip of some civil air defense doors 400 is too protruding, resulting in a large distance between the door panel and the door frame. Therefore, when it is difficult for the airbag 100 to contact the door panel after being normally squeezed and fitted to the inner wall of the door frame, the curtain cloth 101 needs to be used to complete the final seal. By designing matching zippers on the outer wall of the airbag 100 and the edge of the curtain cloth 101, the inflated airbag 100 is connected to the curtain cloth 101, and then the drawstring 101a in the middle of the curtain cloth 101 is tightened.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An intelligent detection device for closed doors of civil air defense projects, characterized by: It comprises a cylindrical strip airbag (100) arranged in a rectangular layout inside a frame of a civil air defense door (400), a gas distribution mechanism (200) being squeezed and clamped between the two ends of the airbag (100), and a supporting mechanism (300) being further arranged on the outer wall of the airbag (100); The gas distribution mechanism (200) comprises an inflation tube (201), the two ends of the inflation tube (201) are respectively plugged into the two ports of the airbag (100), a pair of sleeves (202) are airtightly slidably disposed on the peripheral wall of the inflation tube (201) between the two ends of the airbag (100), and the ends of the two sleeves (202) that are away from each other are respectively sealed and clamped with the two ports of the airbag (100), and the middle part of the inflation tube (201) is cross-connected with A short tube (203), wherein the short tube (203) is located on a side of the inflation tube (201) away from the civil air defense door (400) and is connected to a smoke tube (204), an end of the short tube (203) close to the civil air defense door (400) is sealed, and an insertion tube (205) is inserted into an end of the short tube (203) away from the civil air defense door (400), and a peripheral wall of the insertion tube (205) is located on a side close to the smoke tube (204) and is provided with a slide groove (205a) along its generatrix; The support mechanism (300) comprises a vertical tube (301), wherein two ends of the vertical tube (301) are symmetrically connected to a first support rod (302) by threads, a peripheral wall of the vertical tube (301) is slidably connected to a second support rod (303), and ends of the first support rod (302) and the second support rod (303) away from the vertical tube (301) both abut against the outer wall of the support airbag (100).

2. The intelligent detection device for airtight doors of civil air defense projects as claimed in claim 1, characterized in that: One end of the sleeve (202) that is away from each other is fixedly connected to a push plate (206), the push plate (206) is located outside the end of the airbag (100), and a cover plate (207) is provided inside the end of the airbag (100) and fixedly connected to the push plate (206), the push plate (206) and the cover plate (207) seal and clamp the port of the airbag (100), and the push plate (206) and the cover plate (207) are both non-contact sleeved with the inflation tube (201).

3. The intelligent detection device for airtight doors of civil air defense projects as claimed in claim 2, characterized in that: The inner wall of the short tube (203) is provided with a second slide groove (203a) corresponding to the first slide groove (205a), and a spring (208) and a stopper (209) are slidably sleeved between the first slide groove (205a) and the second slide groove (203a), the spring (208) is located at one end of the stopper (209) close to the civil air defense door (400), and the stopper (209) is fixedly connected to the inner wall of the short tube (203) by screws.

4. The intelligent detection device for airtight doors of civil air defense projects as claimed in claim 3, characterized in that: The slide groove 1 (205a) passes through the side wall of the insert tube (205), and one end of the slide groove 2 (203a) passes through the open end of the short tube (203) in parallel with the axis of the short tube (203), and the groove walls of the slide groove 1 (205a) and the slide groove 2 (203a) are continuous arc surfaces, and the arc axes of the arc inner walls on both sides of the slide groove 1 (205a) and the slide groove 2 (203a) are coaxial, and the arc inner walls on both sides of the slide groove 1 (205a) and the slide groove 2 (203a) have an angle of more than one hundred and eighty degrees to the spring (208).

5. The intelligent detection device for airtight doors of civil air defense projects as claimed in claim 4, characterized in that: A rubber pad (210) is provided at one closed end of the short tube (203); when the spring (208) is in a fully compressed state, one end of the insertion tube (205) located in the sleeve (202) is located between the connection between the inflation tube (201) and the short tube (203); when the end of the insertion tube (205) contacts the rubber pad (210), the first slide groove (205a) is connected to the smoke tube (204).

6. The intelligent detection device for airtight doors of civil air defense projects as claimed in claim 5, characterized in that: An end of the short tube (203) away from the rubber pad (210) is externally threadedly connected to a nut (211), and an end of the short tube (203) away from the rubber pad (210) is internally threadedly connected to a blower (102).

7. The intelligent detection device for airtight doors of civil air defense projects as claimed in claim 6, characterized in that: The air inlet of the blower (102) is vertically upward, and the air inlet of the blower (102) is sealed and connected to a combustion pot (103). A mesh plate (104) is horizontally arranged in the combustion pot (103). The side wall of the combustion pot (103) is punched toward the bottom surface of the mesh plate (104) to form a hook and an air hole. The top of the combustion pot (103) is open, and a pot cover (105) is airtightly slidably sleeved on the top of the combustion pot (103), and the peripheral wall of the pot cover (105) covers the air hole.

8. The intelligent detection device for airtight doors of civil air defense projects as claimed in claim 7, characterized in that: The side of the airbag (100) away from the civil air defense door (400) is covered with a curtain (101), the edge of the curtain (101) and the airbag (100) are connected by a zipper, and a drawstring (101a) is provided in the middle of the curtain (101).

9. The intelligent detection device for airtight doors of civil air defense projects as claimed in claim 1, characterized in that: The airbag (100) is bent at right angles at the four corners of the door frame of the civil air defense door (400), and the bending parts of the airbag (100) are all located at the inner corners to abut against a pressure block (305), and the back of the pressure block (305) is connected to a T-shaped support rod three (304), and the support rod three (304) is hinged to the support rod two (303).

10. The intelligent detection device for airtight doors of civil air defense projects according to claim 9, characterized in that: The ends of the support rod 1 (302), the ends of the support rod 2 (303) away from the vertical tube (301), and the two short sides of the T-shape of the support rod 3 (304) are hinged with pressure plates (306), and the pressure plates (306) are arc-shaped and fit against the outer wall of the airbag (100).

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