Civil air defense door air tightness detection device

Abstract

The utility model provides a civil air defense door air tightness detection device, and relates to the field of civil air defense engineering. The civil air defense door air tightness detection device comprises a bottom frame, an observation assembly is arranged in the bottom frame, a shell is fixed on the bottom frame, two sets of injection pipes are installed at the positions, corresponding to the observation assembly, of the side wall of the shell and used for injecting fluorescent liquid, a sealing ring is placed on the bottom frame and located in the shell, the sealing ring is located below the injection pipes, and a cover plate is installed on the shell. A circle of groove is formed in the bottom face of the cover plate, the upper end of the shell is inserted into the groove, a hydraulic cylinder A is fixedly installed on the cover plate, the output end of the hydraulic cylinder A penetrates through the cover plate and is in sliding connection with the cover plate, an air inlet pipe is further installed on the cover plate, and an opening and closing assembly is installed on the shell and used for controlling the cover plate to be closed, opened and closed. According to the air tightness detection device for the civil defense door, the observation assembly, the air inlet pipe and the sealing ring are arranged, the air inlet pipe pumps air, if air leakage occurs, fluorescent liquid can be sprayed to the transparent plate, and more accurate observation can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of civil air defense projects, in particular to an airtightness detection device for civil air defense doors. Background Technique

[0002] The civil air defense door is the door of the entrance and exit of the civil air defense project. The classification of civil air defense doors is relatively distinct, including various types and specifications such as ordinary single and double leaf airtight doors and single and double leaf airtight doors with movable thresholds. The civil air defense door must meet the requirements of protection and airtightness. Therefore, after the production of the civil air defense door is completed, airtightness detection is required, which is generally achieved through an airtightness detection device.

[0003] Chinese Patent: CN220960505U discloses an airtightness detection device for civil air defense doors, including a civil air defense door arranged inside a detection box. Two support rods are fixed on the inner side wall of the detection box, and the two support rods are arranged opposite to each other. A sand layer is laid inside the detection box. A return plate is fixed above the two support rods, and a return frame is fixed above the return plate. A first sealing gasket is arranged on the return plate, and a detachable civil air defense door is arranged above the first sealing gasket. A second sealing gasket is fixed above the return frame. The device forms a sealed overpressure chamber for airtightness detection between the return plate, the return frame, the first sealing gasket, the door frame and door leaf of the civil air defense door, the second sealing gasket and the buckle cover. One end of the air inlet pipe away from the buckle cover is connected to an inflation device. By inflating the air inlet pipe, if there is a leakage at a certain part, the gas at the leakage part can blow the sand layer at its corresponding part, forming a concave pit at the corresponding part of the sand layer. When the civil air defense door is removed, the leakage part of the civil air defense door can be accurately located.

[0004] Since the airtightness test of the civil air defense door mainly focuses on the gap between the door and the door frame, and most of the door frames of civil air defense doors are made of metal structures, the probability of air leakage is high when using compression springs to fix in this scheme, and the probability of the sand layer collapsing when being blown open is relatively large, and the display effect is not good. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides an airtightness detection device for civil air defense doors, which solves the problems put forward in the background technique.

[0007] (II) Technical Solutions

[0008] To achieve the above objectives, the present utility model is realized through the following technical solutions: An airtightness detection device for a civil air defense door, including a bottom frame, an observation assembly is provided inside the bottom frame, a housing is fixed on the bottom frame, and two groups of spray pipes are installed on the side wall of the housing corresponding to the position of the observation assembly for spraying fluorescent liquid. A sealing ring is placed inside the housing on the bottom frame, and the sealing ring is below the spray pipes. A cover plate is installed on the housing, and a groove is provided on the bottom surface of the cover plate. The upper end of the housing is inserted into the groove. A hydraulic cylinder A is fixedly installed on the cover plate, and the output end of the hydraulic cylinder A penetrates through the cover plate and is slidably connected to the cover plate. An air inlet pipe is also installed on the cover plate, and an opening and closing assembly is installed on the housing, and the opening and closing assembly is used to control the airtight opening and closing of the cover plate.

[0009] Preferably, the observation assembly includes a transparent plate, a flushing pipe, and a monitoring device. The transparent plate is inside the bottom frame, and its outer wall is sealed with the inner wall of the bottom frame. One end of the transparent plate is provided with a drainage groove, and the drainage groove penetrates through the transparent plate. There are multiple flushing pipes, which are on the side of the transparent plate away from the drainage groove, and the flushing pipes are all fixedly installed on the bottom frame. It also includes bottom columns, and there are four bottom columns, all fixed at the bottom of the transparent plate. The monitoring device is flush with the bottom columns and is at the middle position below the transparent plate.

[0010] Preferably, the sealing ring is composed of three layers of rubber pads, and the three layers of rubber pads are fixedly connected. The upper and lower layers of rubber pads are solid structures, and the middle layer of rubber pad is a hollow structure.

[0011] Preferably, a gasket is fixed on the inner top wall of the groove, and the shape of the groove matches that of the housing.

[0012] Preferably, the opening and closing assembly includes support rods, hydraulic cylinder B, connecting rods, and hydraulic cylinder C. There are four support rods and four hydraulic cylinder Bs. The fixed end of the hydraulic cylinder B is fixed to one end of the support rod, and the other end is fixed to the cover plate. The end of the support rod away from the hydraulic cylinder B is rotatably connected to the side surface of the housing. Extension rods are fixed on the rotating shafts of the housing and the two support rods on one side. The left and right ends of the connecting rod are hinged to the ends of the two extension rods away from the support rods. One end of the hydraulic cylinder C is hinged to the housing, and the other end is hinged to the middle position of the connecting rod.

[0013] Preferably, the hydraulic cylinder B is at the edge position of the upper surface of the cover plate, the hydraulic cylinder A is in the middle of the cover plate, and the distances between the hydraulic cylinder A and the hydraulic cylinder B closest to it are the same.

[0014] (III) Beneficial effects

[0015] The present utility model provides an airtightness detection device for a civil air defense door. It has the following beneficial effects:

[0016] 1. For this airtightness detection device of the civil air defense door, an observation component, an air inlet pipe, and a sealing ring are provided. When the civil air defense door is placed inside the outer shell, it needs to be placed on the sealing ring, and the door frame of the civil air defense door is in combined contact with the sealing ring. Then, the cover plate is covered, and the hydraulic cylinder B is used to press the connection between the cover plate and the outer shell to ensure sealing. Then, the hydraulic cylinder A is used to squeeze the civil air defense door to make the contact between the door frame and the sealing ring tight, achieving sealing. Then, the spraying pipe sprays fluorescent liquid onto the civil air defense door, and the fluorescent liquid mainly concentrates at the civil air defense door and the door frame. Then, the air inlet pipe pumps air. If there is a problem of air leakage, the fluorescent liquid will be sprayed onto the transparent plate and can be observed through the monitoring device. Finally, the transparent plate is rinsed with the flushing pipe to wash off the fluorescent liquid, enabling more accurate observation.

[0017] 2. For this airtightness detection device of the civil air defense door, by setting an opening and closing component, when the hydraulic rod B contracts, the cover plate can be lifted, and then the hydraulic cylinder C can transfer the cover plate, facilitating the hoisting of the civil air defense door. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a front view of the structure of the present utility model;

[0020] Figure 3 is a split view of the structure of the present utility model;

[0021] Figure 4 is a partial structural cross-sectional view of the present utility model;

[0022] Figure 5 is a structural diagram of the observation component of the present utility model.

[0023] In the figure: 1, bottom frame; 2, observation component; 201, transparent plate; 202, flushing pipe; 203, monitoring device; 204, drainage groove; 205, bottom column; 3, outer shell; 4, spraying pipe; 5, sealing ring; 501, rubber pad; 6, cover plate; 7, groove; 8, hydraulic cylinder A; 9, air inlet pipe; 10, opening and closing component; 1001, support rod; 1002, hydraulic cylinder B; 1003, connecting rod; 1004, hydraulic cylinder C; 1005, extension rod; 11, washer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0026] An airtightness detection device for civil air defense doors is provided in an embodiment of the present utility model:

[0027] As Figures 1-5 shown, it includes a bottom frame 1. An observation assembly 2 is arranged inside the bottom frame 1. An outer shell 3 is fixed on the bottom frame 1. Two groups of spraying pipes 4 are installed on the side wall of the outer shell 3 corresponding to the position of the observation assembly 2 for spraying fluorescent liquid. A sealing ring 5 is placed inside the bottom frame 1 within the outer shell 3, and the sealing ring 5 is below the spraying pipes 4. A cover plate 6 is installed on the outer shell 3. A circular groove 7 is provided on the bottom surface of the cover plate 6, and the upper end of the outer shell 3 is inserted into the groove 7. A hydraulic cylinder A8 is fixedly installed on the cover plate 6, and the output end of the hydraulic cylinder A8 penetrates through the cover plate 6 and is slidably connected to the cover plate 6. An air inlet pipe 9 is also installed on the cover plate 6. An opening and closing assembly 10 is installed on the outer shell 3, and the opening and closing assembly 10 is used to control the sealed opening and closing of the cover plate 6.

[0028] The spraying pipe 4 is connected to a fluorescent liquid storage tank and a pump, and the air inlet pipe 9 is connected to a high-pressure air pump.

[0029] The observation assembly 2 includes a transparent plate 201, a flushing pipe 202, and a monitoring device 203. The transparent plate 201 is inside the bottom frame 1, and its outer wall is sealed with the inner wall of the bottom frame 1. One end of the transparent plate 201 is provided with a drainage groove 204, and the drainage groove 204 penetrates through the transparent plate 201. A plurality of flushing pipes 202 are provided on the side of the transparent plate 201 away from the drainage groove 204, and the flushing pipes 202 are all fixedly installed on the bottom frame 1. It also includes bottom columns 205. There are four bottom columns 205, all fixed to the bottom of the transparent plate 201. The monitoring device 203 is flush with the bottom columns 205 and is located at the middle position below the transparent plate 201.

[0030] The transparent plate 201 can be made of high-strength acrylic plate. The flushing pipe 202 is connected to a water tank and a water pump. Spraying water together by a plurality of flushing pipes 202 can wash away the fluorescent liquid on the transparent plate 201, and then it is discharged through the drainage groove 204. The monitoring device 203 includes a display lamp and a camera.

[0031] The sealing ring 5 is composed of three layers of rubber pads 501. The three layers of rubber pads 501 are fixedly connected. The upper and lower rubber pads 501 are of solid structure, and the middle rubber pad 501 is of hollow structure.

[0032] The hollow rubber pad 501 will be folded when compressed, increasing the coverage and improving the sealing rate.

[0033] A gasket 11 is fixed on the inner top wall of the groove 7, and the groove 7 is matched with the shape of the outer shell 3.

[0034] When the groove 7 is pressed against the outer shell 3, good sealing can be achieved.

[0035] The opening and closing assembly 10 includes support rods 1001, hydraulic cylinders B 1002, connecting rods 1003, and hydraulic cylinders C 1004. There are four support rods 1001 and hydraulic cylinders B 1002 respectively. The fixed end of the hydraulic cylinder B 1002 is fixed to one end of the support rod 1001, and the other end is fixed to the cover plate 6. The end of the support rod 1001 away from the hydraulic cylinder B 1002 is rotatably connected to the side surface of the outer shell 3. Extension rods 1005 are fixed on the rotating shafts of the two support rods 1001 on one side and the outer shell 3. The left and right ends of the connecting rod 1003 are hinged to the ends of the two extension rods 1005 away from the support rod 1001. One end of the hydraulic cylinder C 1004 is hinged to the outer shell 3, and the other end is hinged to the middle position of the connecting rod 1003.

[0036] The hydraulic cylinder B 1002 is located at the edge position of the upper surface of the cover plate 6, and the hydraulic cylinder A 8 is located in the middle of the cover plate 6. The distances between the hydraulic cylinder A 8 and the adjacent hydraulic cylinders B 1002 are the same.

[0037] During use, when the civil air defense door is placed inside the outer shell 3, it needs to be placed on the sealing ring 5, and the door frame of the civil air defense door is in combined contact with the sealing ring 5. Then the cover plate 6 is covered, so that the hydraulic cylinder B 1002 presses the connection between the cover plate 6 and the outer shell 3 to ensure sealing. Then the hydraulic cylinder A 8 squeezes the civil air defense door to make the contact between the door frame and the sealing ring 5 tight to achieve sealing. Then the spray pipe 4 sprays fluorescent liquid onto the civil air defense door, and the fluorescent liquid mainly concentrates at the civil air defense door and the door frame. Then the air inlet pipe 9 pumps air. If there is a problem of air leakage, the fluorescent liquid will be sprayed onto the transparent plate 201 and can be observed through the monitoring device 203. Finally, the transparent plate 201 is rinsed with the flushing pipe 202 to wash off the fluorescent liquid. When the hydraulic rod B contracts, the cover plate 6 can be lifted, and then the hydraulic cylinder C 1004 can move the cover plate 6 to facilitate the hoisting of the civil air defense door.

[0038] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0039] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0040] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting air tightness of civil air defense doors, characterized in that: The invention comprises a bottom frame (1), wherein an observation assembly (2) is arranged inside the bottom frame (1), a shell (3) is fixed on the bottom frame (1), two groups of spray pipes (4) are installed at positions of the side wall of the shell (3) corresponding to the observation assembly (2) for spraying fluorescent liquid, a sealing ring (5) is placed inside the shell (3) on the bottom frame (1), the sealing ring (5) is below the spray pipe (4), a cover plate (6) is installed on the shell (3), a circle of grooves (7) are arranged on the bottom surface of the cover plate (6), the upper end of the shell (3) is inserted into the groove (7), a hydraulic cylinder A (8) is fixedly installed on the cover plate (6), the output end of the hydraulic cylinder A (8) passes through the cover plate (6) and is slidably connected to the cover plate (6), an air inlet pipe (9) is also installed on the cover plate (6), an opening and closing assembly (10) is installed on the shell (3), and the opening and closing assembly (10) is used to control the airtight opening and closing of the cover plate (6).

2. The air tightness detection device for civil air defense door according to claim 1 is characterized in that: The observation assembly (2) comprises a transparent plate (201), a flushing pipe (202) and a monitoring device (203); the transparent plate (201) is located inside the bottom frame (1); the outer wall of the transparent plate (201) is sealed with the inner wall of the bottom frame (1); a drainage groove (204) is provided at one end of the transparent plate (201); the drainage groove (204) penetrates the transparent plate (201); a plurality of flushing pipes (202) are provided and are located on a side of the transparent plate (201) away from the drainage groove (204); the flushing pipes (202) are all fixedly mounted on the bottom frame (1); and the observation assembly (2) comprises a bottom column (205); four bottom columns (205) are provided and are all fixed at the bottom of the transparent plate (201); the monitoring device (203) is flush with the bottom column (205) and is located in the middle position below the transparent plate (201).

3. The air tightness detection device for civil air defense door according to claim 2 is characterized in that: The sealing ring (5) is composed of three layers of rubber pads (501), the three layers of rubber pads (501) are fixedly connected, the upper and lower layers of rubber pads (501) are solid structures, and the middle layer of rubber pads (501) is hollow structure.

4. The air tightness detection device for civil air defense door according to claim 3 is characterized in that: A gasket (11) is fixed to the inner top wall of the groove (7), and the shape of the groove (7) matches that of the outer shell (3).

5. The air tightness detection device for civil air defense door according to claim 4 is characterized in that: The opening and closing assembly (10) comprises a support rod (1001), a hydraulic cylinder B (1002), a connecting rod (1003) and a hydraulic cylinder C (1004). The support rod (1001) and the hydraulic cylinder B (1002) are each provided with four. The fixed end of the hydraulic cylinder B (1002) is fixed to one end of the support rod (1001), and the other end is fixed to the cover plate (6). The end of the support rod (1001) away from the hydraulic cylinder B (1002) is rotatably connected to the side of the housing (3). Two support rods (1001) on one side are both fixed to the rotation axis of the housing (3) with extension rods (1005). The left and right ends of the connecting rod (1003) are hinged to the ends of the two extension rods (1005) away from the support rod (1001). One end of the hydraulic cylinder C (1004) is hinged to the housing (3), and the other end is hinged to the middle position of the connecting rod (1003).

6. The air tightness detection device for civil air defense door according to claim 5, characterized in that: The hydraulic cylinder B (1002) is located at the edge of the upper surface of the cover plate (6), and the hydraulic cylinder A (8) is located in the middle of the cover plate (6). The distances between the hydraulic cylinder A (8) and the hydraulic cylinder B (1002) adjacent to it are the same.

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