Testing device for on-site detection of air tightness of civil air defense door

Abstract

The utility model provides a test device for on-site detection of air tightness of a civil air defense door, relates to the technical field of civil air defense engineering detection, solves the problems that the device cannot be carried and on-site detection cannot be carried out, and comprises an air pump, a flow meter, a pressure measuring instrument, a sealing mechanism and an adjusting mechanism, a hollow rectangular shape is formed and fixedly covers the door opening of the civil air defense door through the sealing paste, the sealing mechanism is inflated through the air pump, and the air leakage of the civil air defense door is detected through numerical detection of the pressure measuring instrument and the flow meter. The device is reliable in detection result, short in detection time, low in cost and convenient to carry, can be recycled, and can rapidly detect the air tightness of the civil air defense door.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense project detection, in particular to a test device for on-site detection of the air tightness of civil air defense doors. Background Technique

[0002] The air tightness of civil air defense doors is an important index for the civil air defense project to exert its gas defense efficiency. At present, the air tightness detection of civil air defense doors is carried out in a laboratory. The civil air defense door is hung on a steel structure detection platform, and the overpressure chamber formed by the civil air defense door and the steel structure back plate is used for detection; after the civil air defense door is installed, this equipment cannot be used for on-site detection; the installation quality of the civil air defense door has a great influence on the air tightness of the civil air defense door. Therefore, there is an urgent need for a test device for on-site detection of the air tightness of civil air defense doors. Content of the Utility Model

[0003] Therefore, the utility model provides a test device for on-site detection of the air tightness of civil air defense doors to solve the problems of being unable to carry and unable to detect on-site.

[0004] In order to achieve the above purpose, the utility model provides the following technical scheme: A test device for on-site detection of the air tightness of civil air defense doors is arranged at the position of the civil air defense door opening and includes:

[0005] An overpressure device, the overpressure device is provided with an adjustment mechanism, a sealing mechanism, an air inlet and a pressure measuring port. The adjustment mechanism is arranged outside the sealing mechanism. The sealing mechanism and the adjustment mechanism are extendably connected. The sealing mechanism is provided with the air inlet and the pressure measuring port. An air charging pipe is fixedly connected to the air inlet, a pressure measuring pipe is fixedly connected to the pressure measuring port. The other end of the air charging pipe is connected to an air pump, and the pressure measuring pipe is connected to a pressure measuring instrument.

[0006] Preferably, the adjustment mechanism includes a support rod, an adjustment center, a vertical rod and a horizontal rod. The support rod is rotationally connected to one side of the adjustment center by a shaft. The vertical rods are arranged at the vertical symmetrical ends of the adjustment center, and the horizontal rods are arranged at the parallel symmetrical ends of the adjustment center.

[0007] Preferably, the support rod, the vertical rod and the horizontal rod are arranged as telescopic rods.

[0008] Preferably, the adjustment center is arranged in a cross shape, and the vertical rod, the horizontal rod and the adjustment center are fixedly connected by bolts.

[0009] Preferably, a fixed base is arranged at the opposite end of the connection between the support rod and the adjustment center, and at least four suction cups are arranged at the bottom of the fixed base.

[0010] Preferably, the sealing mechanism includes an extension rod, a fixed rod, a sealing cloth, and a sealing sticker. The extension rod includes an extension vertical rod and an extension horizontal rod. The body of the extension vertical rod is connected to the horizontal rod, the body of the extension horizontal rod is connected to the vertical rod, and both ends of the extension horizontal rod are connected to the extension vertical rod. Four fixed rods are provided and are arranged at the connection of the extension vertical rod and the extension horizontal rod. The sealing cloth is arranged inside the extension rod and the fixed rod, and the four corners of the sealing cloth are wound and connected to the fixed rod. The sealing sticker is arranged on the outer circle of the sealing cloth.

[0011] Preferably, two extension rods and two fixed rods are provided, and the extension rods and the fixed rods are telescopic rods.

[0012] Preferably, the sealing cloth is made of plastic material, and the sealing sticker is adhesively pasted.

[0013] Preferably, the air pump is connected to a flow meter, the air pump is provided with an air pump valve, and the flow meter is provided with a flow meter valve.

[0014] Preferably, a pressure gauge is arranged between the air pump and the flow meter.

[0015] The present application adopts the above technical solutions and at least has the following beneficial effects:

[0016] After the civil air defense door is installed, combined with the on-site conditions, the test device of the present utility model with reliable detection results, short detection time, low cost, easy to carry, and recyclable can quickly detect the airtightness of the civil air defense door.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a schematic structural diagram provided by an embodiment of the present utility model;

[0020] Figure 2 is a schematic plan view provided by an embodiment of the present utility model;

[0021] Figure 3 is a schematic bottom view structure diagram provided by an embodiment of the present utility model;

[0022] Figure 4 It is a schematic diagram of the connection process provided by the embodiment of the present utility model;

[0023] In the figure: 1. Air pump; 2. Pressure measuring instrument; 3. Inflation port; 4. Pressure measuring port; 5. Inflation pipe; 6. Pressure measuring pipe; 7. Support rod; 8. Adjustment center; 9. Upright rod; 10. Cross bar; 11. Extended upright rod; 12. Extended cross bar; 13. Fixed rod; 14. Sealing cloth; 15. Sealing sticker; 16. Flow meter; 71. Fixed base; 101. Air pump valve; 102. Pressure gauge; 161. Flow meter valve. Specific implementation manners

[0024] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the present utility model.

[0025] The specific embodiment of the present utility model provides a test device for on-site detection of the airtightness of civil air defense doors. As shown in the attached Figures 1-4 figure, it mainly includes an overpressure device. The overpressure device is provided with an adjustment mechanism, a sealing mechanism, an inflation port 3 and a pressure measuring port 4. The adjustment mechanism is arranged outside the sealing mechanism. The sealing mechanism and the adjustment mechanism can be extended and connected. The sealing mechanism is provided with an inflation port 3 and a pressure measuring port 4. The inflation pipe 5 is fixedly connected to the inflation port 3, and the pressure measuring pipe 6 is fixedly connected to the pressure measuring port 4. The other end of the inflation pipe is connected to the air pump 1, and the pressure measuring pipe is connected to the pressure measuring instrument 2.

[0026] Specifically, as shown in Figures 1-3 the figure, the adjustment mechanism is provided with a support rod 7, an adjustment center 8, an upright rod 9 and a cross bar 10. Among them, the adjustment center 8 is set in a cross shape, and a thread is provided in the lumen of the adjustment center 8; the support rod 7 is rotationally connected to the adjustment center 8 and is arranged on one side of the adjustment center 8. There are two upright rods 9, and the two upright rods 9 are symmetrically arranged vertically at both ends of the adjustment center 8. There are two cross bars 10, and the two cross bars 10 are symmetrically arranged horizontally at both ends of the adjustment center 8. The ends of the upright rod 9, the cross bar 10 and the adjustment center 8 connected to each other are provided with threads, and the upright rod 9, the cross bar 10 and the adjustment center 8 are fixedly connected by threads; in this embodiment, the support rod 7, the upright rod 9 and the cross bar 10 are set as telescopic rods. Rotating the support rod 7 can make the support rod 7 and the adjustment center 8 expand at an angle, so that the support rod 7, the adjustment center 8 and the upright rod 9 form a triangular support state, and the combined sealing mechanism can be fixed on the ground and the outside of the civil air defense door.

[0027] Specifically, a fixed base 71 is provided at the opposite end of the connecting end of the support rod 7 and the adjustment center 8. In this embodiment, the fixed base 71 is set as a rectangular steel plate, and no suction cups are provided at the bottom of the fixed base 71 for sandy or muddy ground. For flat ground or ground with a laid floor, four suction cups are provided at the four corners to improve the fixing strength of the fixed base 71.

[0028] Specifically, the sealing mechanism includes an extension rod, a fixed rod 13, a sealing cloth 14 and a sealing sticker 15. The extension rod includes an extension vertical rod 11 and an extension horizontal rod 12. Connecting blocks are provided at both ends of the horizontal rod 10. A communication hole is provided at the center position of the connecting block, and a thread is provided in the hole. The rod body of the extension vertical rod 11 is provided with a thread and is threadedly connected and fixed to the communication hole. The extension vertical rod 11 is arranged parallel to the vertical rod 8; the rod body of the extension horizontal rod 12 is arranged at the opposite end of the connecting end of the vertical rod 9 and the adjustment center 8. Both ends of the extension horizontal rod 12 are welded and connected to one end of the extension vertical rod 11; there are two extension vertical rods 11 and extension horizontal rods 12, and the vertical rod 9, the horizontal rod 10, the extension vertical rod 11 and the extension horizontal rod 12 are arranged in a shape of a Chinese character 'tian'.

[0029] Specifically, a fixed rod 13 is provided at the welded joint of the extension vertical rod 11 and the extension horizontal rod 12. The fixed rod 13 is arranged perpendicular to the extension vertical rod 11 and the extension horizontal rod 12. One end of the fixed rod 13 is welded and connected to the joint of the extension vertical rod 11 and the extension horizontal rod 12. There are four fixed rods 13, and the fixed rod 13 is a telescopic rod; the sealing cloth 14 is set as a rectangular plastic cloth in this embodiment. The four corners of the sealing cloth 14 are respectively wound and connected to the other end of the position at one end of the joint of the fixed rod 13, the extension vertical rod 11 and the extension horizontal rod 12, and are laid along the outside of the fixed rod 13 and the positions between the vertical rod 9, the horizontal rod 10 and the fixed rod 13, so that the sealing cloth 14 and each rod body form a hollow rectangular shape; a sealing sticker 15 is provided on the outer circle of the sealing cloth 14, and the sealing sticker 15 is set as an adhesive tape.

[0030] Specifically, as Figures 1-4 shown, an inflation port 3 and a pressure measuring port 4 are provided on the sealing cloth 14. Threaded rings are provided at the positions of the inflation port 3 and the pressure measuring port 4 outside the sealing cloth 14. Threaded pipes are provided on the outer circles of the inflation pipe 5 and the pressure measuring pipe 6. The inflation pipe 5 is threadedly connected and fixed to the inflation port 3, and the pressure measuring pipe 6 is threadedly connected and fixed to the pressure measuring port 4; the inflation pipe 5 communicates with the sealing cloth 14 and is connected to the air pump 1 and the flow meter 16 at the same time. The air pump 1 is provided with a pressure gauge 102 and an air pump valve 101, and the flow meter 16 is provided with a flow meter valve 161; the pressure measuring pipe 6 communicates with the sealing cloth 14, and the other end is connected to the pressure measuring instrument 2. The pressure measuring instrument 2 is set as a micro - pressure gauge in this embodiment.

[0031] The working principle of this embodiment includes:

[0032] Environmental conditions: Detect the environmental temperature and air pressure. The environmental temperature is controlled between -5°C and 35°C. When conducting the airtightness test, under the standard atmospheric pressure, the overpressure value set for a single-leaf airtight door is 100 Pa, and the overpressure values set for airtight doors and double-leaf airtight doors are 50 Pa. The overpressure value under the actual environmental atmospheric pressure should be converted to the value under the standard atmospheric pressure.

[0033] Instruments and equipment: The instruments used include an air pump 1, a flowmeter 16, a pressure gauge 102, a pressure measuring instrument 2, and an airtight mechanism and an adjusting mechanism. Among them, the air pump 1, the pressure measuring instrument 2, the pressure gauge 102, and the flowmeter 16 must be within the calibration period.

[0034] Form an overpressure chamber: Close the civil air defense door. Seal the joints between the inner side of the door leaf and the door frame with a sealing tape. Cover the opening of the civil air defense door with the fixing rod 13 and the sealing cloth 14, and paste them around on the cave wall. An overpressure chamber is formed between the sealing cloth 14 and the civil air defense door. Two hoses are reserved in the overpressure chamber, one as the charging pipe 5 and the other as the pressure measuring pipe 6.

[0035] Device connection: Connect the air pump 1 and the flowmeter 16 to the charging pipe 5 of the overpressure chamber in sequence; connect the pressure measuring instrument 2 to the pressure measuring pipe 6; ensure that the instruments are in normal use and the pipelines are airtight before connection. After the connection is completed, before measurement, calibrate and level the instruments.

[0036] Device self-check: Open the air pump valve 101 to inflate the overpressure chamber of the civil air defense door. Adjust the flowmeter valve 161 so that when the reading of the pressure measuring instrument 2 stabilizes at the given overpressure value, read the flow value of the flowmeter 16. When the reading of the pressure measuring instrument 2 stabilizes at the given overpressure value, read the flow value of the flowmeter 16. If the air leakage volume is less than 0.001 m3 / h, it indicates that the airtightness of the device itself meets the requirements.

[0037] Air leakage volume detection: Open the civil air defense door, tear off the sealing tape 15 at the joint between the inner side of the door leaf and the door frame, and close the civil air defense door again; then open the air pump valve 101 again to make the air pump 1 inflate the overpressure chamber of the civil air defense door. Adjust the flowmeter valve 161 so that when the reading of the pressure measuring instrument 2 stabilizes at the given overpressure value, read the flow value of the flowmeter 16, which is the air leakage volume of the civil air defense door.

[0038] Test results: This civil air defense door is an airtight door. Under the condition of 50 Pa overpressure at one standard atmospheric pressure, the air leakage volume is 0.51 m3 / h, and the airtightness of the civil air defense door is inspected on-site.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test device for on-site detection of the airtightness of civil air defense doors, which is arranged at the position of the civil air defense door opening, and is characterized in that, Including: An overpressure device, the overpressure device is provided with an adjusting mechanism, a sealing mechanism, an air inlet (3) and a pressure measuring port (4). The adjusting mechanism is arranged outside the sealing mechanism. The sealing mechanism and the adjusting mechanism are extendably connected. The sealing mechanism is provided with the air inlet (3) and the pressure measuring port (4). An air filling pipe (5) is fixedly connected to the air inlet (3), and a pressure measuring pipe (6) is fixedly connected to the pressure measuring port (4). The other end of the air filling pipe is connected to an air pump (1), and the pressure measuring pipe is connected to a pressure measuring instrument (2).

2. The test device for on-site detection of the airtightness of civil air defense doors according to claim 1, characterized in that: The adjusting mechanism includes a support rod (7), an adjusting center (8), a vertical rod (9) and a cross rod (10). The support rod (7) is rotatably connected to one side of the adjusting center (8). The vertical rods (9) are arranged at the vertical symmetric ends of the adjusting center (8), and the cross rods (10) are arranged at the parallel symmetric ends of the adjusting center (8).

3. The test device for on-site detection of the airtightness of civil air defense doors according to claim 2, characterized in that: The support rod (7), the vertical rod (9) and the cross rod (10) are provided as telescopic rods.

4. The test device for on-site detection of the airtightness of civil air defense doors according to claim 3, characterized in that: The adjusting center (8) is provided in a cross shape, and the vertical rod (9), the cross rod (10) and the adjusting center (8) are fixedly connected by bolts.

5. The test device for on-site detection of the airtightness of civil air defense doors according to claim 4, characterized in that: At the opposite end of the connection between the support rod (7) and the adjusting center (8), a fixed base (71) is provided, and at least four suction cups are provided at the bottom of the fixed base (71).

6. The test device for on-site detection of the airtightness of civil air defense doors according to claim 2, characterized in that: The sealing mechanism includes an extension rod, a fixed rod (13), a sealing cloth (14) and a sealing sticker (15). The extension rod includes an extension vertical rod (11) and an extension cross rod (12). The rod body of the extension vertical rod (11) is connected to the cross rod (10), and the rod body of the extension cross rod (12) is connected to the vertical rod (9), and both ends of the extension cross rod (12) are connected to the extension vertical rod (11); Four fixed rods (13) are provided, and the fixed rods (13) are arranged at the connection of the extension vertical rod (11) and the extension cross rod (12); The sealing cloth (14) is arranged outside the extension rod and the fixed rod (13). The four corners of the sealing cloth (14) are wound and connected to the fixed rod (13), and the sealing sticker (15) is arranged on the outer circle of the sealing cloth (14).

7. The test device for on-site detection of the airtightness of civil air defense doors according to claim 6, characterized in that: The extension rod and the fixed rod (13) are provided as telescopic rods, and the extension vertical rod (11) and the extension cross rod (12) are provided as two.

8. An on-site test device for detecting the airtightness of civil air defense doors according to claim 7, characterized in that: The sealing cloth (14) is made of plastic material, and the sealing sticker (15) is pasted with glue.

9. An on-site test device for detecting the airtightness of civil air defense doors according to claim 1, characterized in that: The air pump (1) is connected with a flow meter (16). The air pump (1) is provided with an air pump valve (101), and the flow meter (16) is provided with a flow meter valve (161). The air charging pipe (5) connects the air pump (1) and the flow meter (16).

10. An on-site test device for detecting the airtightness of civil air defense doors according to claim 9, characterized in that: A pressure gauge (102) is arranged between the air pump (1) and the flow meter (16).

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