CN111189593B - Device and method for detecting sealing performance of civil air defense door leaf - Google Patents
Device and method for detecting sealing performance of civil air defense door leaf Download PDFInfo
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- CN111189593B CN111189593B CN202010002264.6A CN202010002264A CN111189593B CN 111189593 B CN111189593 B CN 111189593B CN 202010002264 A CN202010002264 A CN 202010002264A CN 111189593 B CN111189593 B CN 111189593B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
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Abstract
The invention discloses a device and a method for detecting the sealing performance of a civil air defense door leaf, which relate to the technical field of civil air defense door detection and solve the problem that the sealing performance of a civil air defense door in the prior art is poor, and the technical scheme is characterized in that the detection device comprises a base, a negative pressure box, a positive pressure box, a plurality of air bags arranged on one side of the positive pressure box, which is far away from the negative pressure box, an exhaust pipe arranged on one side of the negative pressure box, which is far away from the positive pressure box, a vacuum pump fixedly connected on the exhaust pipe, a pressure gauge fixedly connected on the negative pressure box, an inflation pipe fixedly connected on the positive pressure box and an inflation pump fixedly connected on the inflation pipe; the detection method comprises the following steps: a. filling fluorescent powder; b. installing a door leaf; c. installing a door frame; d. installing an air bag; e. reducing the pressure; f. shading and observing; the position with poor sealing performance of the civil air defense door is marked by the fluorescent powder, so that the position where the civil air defense door which does not meet the requirement is poor in sealing performance can be easily detected, and the civil air defense door can be conveniently and pertinently refitted.
Description
Technical Field
The invention relates to the technical field of civil air defense door detection, in particular to a civil air defense door leaf sealing performance detection device and a civil air defense door leaf sealing performance detection method.
Background
The civil air defense door is the door of people's protection engineering access & exit, because the special service environment of civil air defense door, the impact resistance and the structural strength of civil air defense door all have higher requirement, and the requirement of civil air defense door anti-impact property and structural strength is satisfied through the collocation of steel construction and concrete to current civil air defense door mostly.
In the prior art, chinese patent application publication No. CN107655641A discloses a device for testing air tightness of a civil air defense door, which includes a plurality of vertical posts vertically and fixedly mounted on a foundation, a sealing plate vertically mounted on the vertical posts, a door frame mounted on the sealing plate, a sealing element arranged between the sealing plate and the door frame, the civil air defense door mounted on the door frame, a detection cavity formed between the sealing plate and the civil air defense door, an air inlet and an air outlet provided on the sealing plate and communicating with the detection cavity, the air outlet connected with an inflation device, and the air outlet connected with a pressure detection mechanism.
In the prior art, when the leakproofness of people's air defense door is detected, can detect the whole leakproofness of people's air defense door and not reach the requirement, but can't detect out that the leakproofness of the people's air defense door where that does not reach the requirement is relatively poor, than be convenient for renovate people's air defense door.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device and a method for detecting the sealing performance of a civil air defense door leaf.
In order to achieve the purpose, the invention provides the following technical scheme: a civil air defense door leaf sealing performance detection device comprises a base, a negative pressure box fixedly connected to the top of the base, a positive pressure box arranged at the top of the base, a plurality of air bags arranged on one side of the positive pressure box, which is far away from the negative pressure box, an exhaust tube arranged on one side of the negative pressure box, which is far away from the positive pressure box, a vacuum pump fixedly connected to the exhaust tube, a pressure gauge fixedly connected to the negative pressure box and used for detecting air pressure in the negative pressure box, an inflation tube fixedly connected to the positive pressure box and an inflation pump fixedly connected to the inflation tube;
be provided with phosphor powder in the middle of the gasbag, negative pressure tank and malleation case are close to one side each other and have all been seted up and have been held the chamber, and the door frame is installed between negative pressure tank and malleation case and with negative pressure tank and malleation case sealed setting.
By adopting the technical scheme, when in detection, the civil air defense door leaf is arranged on the door frame, then the door frame is arranged between the negative pressure box and the positive pressure box, fluorescent powder is filled in the air bag, then the positive pressure box is inflated by the inflator pump to expand the air bag, then the vacuum pump is used for pumping out the gas in the negative pressure box, so that the negative pressure box keeps a negative pressure state, the pressure gauge is used for observing the pressure in the negative pressure box, and the negative pressure box is kept in a stable negative pressure state by matching with a vacuum pump, after the negative pressure box lasts for 24 hours, the civil air defense door frame and the civil air defense door leaf are taken down from the negative pressure box and the positive pressure box, then the civil air defense door is put into a darkroom for observation, if fluorescence appears on the civil air defense door, the sealing performance of the civil air defense door does not meet the requirement, and can judge that the sealing performance of the civil air defense door is poor by observing the position of the civil air defense door with fluorescent powder, thereby repairing the civil air defense door in a targeted manner.
The invention is further configured to: the seal groove has all been seted up to negative-pressure tank and malleation case one side that is close to each other, and the shape size of seal groove is the same with the shape size of door frame to when negative-pressure tank and malleation case are close to one side each other and are contacted, the distance that two seal grooves deviate from each other between one side equals the width of door frame.
Through adopting above-mentioned technical scheme, through setting up the seal groove, can imbed the door frame in the middle of two seal grooves for the door frame is difficult to the problem that the gas leakage appears with the contact position of negative pressure case and positive pressure case.
The invention is further configured to: two one side that the seal groove deviates from each other all fixedly connected with sealed the pad, sealed pad is the annular setting of rectangle.
Through adopting above-mentioned technical scheme, through setting up sealed the pad for the problem of gas leakage is difficult to appear more in door frame and the contact department of positive pressure case and negative pressure case.
The invention is further configured to: the positive pressure box can slide along the direction of being close to and keeping away from the negative pressure box on the base, and positive pressure box deviates from negative pressure box one side and is provided with the pneumatic cylinder of fixed connection on the base, and the piston rod fixed connection of pneumatic cylinder deviates from one side of negative pressure box at positive pressure box.
Through adopting above-mentioned technical scheme, before the installation door frame, earlier with the positive pressure case orientation deviate from the direction slip of negative pressure case, after on the negative pressure case was installed to the door frame, the rethread pneumatic cylinder drove the direction that the positive pressure case orientation is close to the negative pressure case and slides, both be convenient for install the door frame between positive pressure case and negative pressure case, also can compress tightly the door frame between positive pressure case and negative pressure case through the pneumatic cylinder, improve the leakproofness of door frame and positive pressure case and negative pressure case contact department.
The invention is further configured to: the top and both sides of positive pressure case and negative pressure case all are provided with fastening device, and fastening device includes two fastening blocks of fixed connection on positive pressure case and negative pressure case respectively, runs through the fastening bolt and the fastening nut of threaded connection on fastening bolt of two fastening blocks along malleation case slip direction.
Through adopting above-mentioned technical scheme, through setting up fastening device, can be in the same place positive pressure case and negative pressure case inseparabler connection to can be more firm compress tightly the door frame between positive pressure case and negative pressure case, thereby make the door frame be difficult to reveal gaseously with the basis department of positive pressure case and negative pressure case.
The invention is further configured to: the positive pressure case deviates from negative pressure case one side and sets up a plurality of mounting holes that run through positive pressure case lateral wall, is provided with the installation pipe of threaded connection on the negative pressure case in the middle of the mounting hole, installation pipe and gasbag one-to-one, and the installation pipe is in the same place and communicates each other with the gasbag fixed connection that corresponds.
Through adopting above-mentioned technical scheme, through setting up the installation pipe, be convenient for dismantle change and washing the gasbag to through setting up the installation pipe, be convenient for put into the gasbag with phosphor powder through the installation pipe in the middle of.
The invention is further configured to: the outside cover that the installation pipe is close to gasbag one end is equipped with the sealing ring of fixed connection on the installation pipe, and the sealing ring is close to malleation case one side fixedly connected with rubber pad.
Through adopting above-mentioned technical scheme, through setting up rubber pad and sealing ring, can improve the leakproofness of installation pipe and malleation case junction for gas is difficult to reveal from the junction of installation pipe and malleation case.
Another object of the present invention is to provide a method for detecting the sealing performance of a civil air defense door leaf, which can detect the poor sealing performance of the civil air defense door where the sealing performance does not meet the requirement, the method comprising the following steps:
a. filling fluorescent powder: filling fluorescent powder into the air bag;
b. door leaf installation: installing a door leaf of the civil air defense door on a door frame;
c. installing a door frame: installing a door frame into a sealing groove of a negative pressure box, driving a positive pressure box to slide towards the direction close to the negative pressure box through a hydraulic cylinder, enabling the door frame to be embedded into the sealing groove of the positive pressure box until the sides, close to each other, of the positive pressure box and the negative pressure box are mutually attached, then enabling a fastening bolt to penetrate through two fastening blocks of the same fastening mechanism, and then screwing a fastening nut to fasten the fastening bolt on the two fastening blocks;
d. installing an air bag: inserting the installation pipe into the installation hole, then screwing the installation pipe to enable the rubber pad on the installation pipe to be tightly attached to the positive pressure box, and then inflating towards the positive pressure box through the inflator pump to enable the air bag to inflate;
e. and (3) reducing pressure: the vacuum pump is used for pumping out gas in the negative pressure box, so that the air pressure in the negative pressure box is smaller than the atmospheric pressure, the pressure gauge is used for observing the air pressure in the negative pressure box, and when the numerical value on the pressure gauge is observed, the vacuum pump continues to work when the numerical value is increased, so that the pressure in the negative pressure box is kept inconvenient, and the pressure stabilizing time is controlled to be 24 hours;
f. and (3) shading and observing: and after the pressure is stabilized for 24 hours, filling gas into the negative pressure box to enable the negative pressure box to return to the normal pressure, then detaching the civil air defense door from the space between the negative pressure box and the positive pressure box, then sending the civil air defense door into a darkroom, and observing whether the fluorescent powder is adhered on the civil air defense door and where the fluorescent powder is adhered.
By adopting the technical scheme, when in detection, the civil air defense door leaf is arranged on the door frame, then the door frame is arranged between the negative pressure box and the positive pressure box, fluorescent powder is filled in the air bag, then the positive pressure box is inflated by the inflator pump to expand the air bag, then the vacuum pump is used for pumping out the gas in the negative pressure box, so that the negative pressure box keeps a negative pressure state, the pressure gauge is used for observing the pressure in the negative pressure box, and the negative pressure box is kept in a stable negative pressure state by matching with a vacuum pump, after the negative pressure box lasts for 24 hours, the civil air defense door frame and the civil air defense door leaf are taken down from the negative pressure box and the positive pressure box, then the civil air defense door is put into a darkroom for observation, if fluorescence appears on the civil air defense door, the sealing performance of the civil air defense door does not meet the requirement, and can judge that the sealing performance of the civil air defense door is poor by observing the position of the civil air defense door with fluorescent powder, thereby repairing the civil air defense door in a targeted manner.
In summary, compared with the prior art, the invention has the following beneficial effects:
1. the invention installs the civil air defense door leaf on the door frame when detecting by arranging the air bag and the fluorescent powder, then installs the door frame between the negative pressure box and the positive pressure box, fills the fluorescent powder in the air bag, then inflates the positive pressure box by the inflator pump to expand the air bag, then extracts the gas in the negative pressure box by the vacuum pump to ensure that the negative pressure box keeps the negative pressure state, observes the pressure in the negative pressure box by the pressure gauge, ensures that the negative pressure box keeps the stable negative pressure state by matching with the vacuum pump, takes the civil air defense door frame and the civil air defense door leaf off the negative pressure box and the positive pressure box after lasting for 24h, then puts the civil air defense door into the dark room for observation, if the civil air defense door has the fluorescence, the sealing performance of the civil air defense door does not meet the requirement, and can judge the sealing performance of the civil air defense door is poor by observing the fluorescent powder of the civil air defense door, thereby the protective door is refitted with pertinence;
2. according to the invention, the fastening mechanism is arranged, so that the positive pressure box and the negative pressure box can be connected together more closely, the door frame can be pressed between the positive pressure box and the negative pressure box more firmly, and gas is not easy to leak at the base parts of the door frame and the positive pressure box and the negative pressure box.
Drawings
FIG. 1 is an isometric view of the completed structure of the first embodiment;
FIG. 2 is a sectional view of a negative pressure tank and a positive pressure tank according to the first embodiment;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an isometric view of the suction box of the first embodiment;
FIG. 5 is an enlarged view of the portion B of FIG. 4;
FIG. 6 is an isometric view of a positive pressure tank of the first embodiment;
fig. 7 is an isometric view of the balloon of the first embodiment.
In the figure: 1. a base; 2. a negative pressure tank; 3. a positive pressure tank; 31. mounting holes; 4. an accommodating chamber; 41. a sealing groove; 42. a gasket; 5. a vacuum pump; 51. an air exhaust pipe; 52. a pressure gauge; 6. an inflator pump; 61. an inflation tube; 7. a fastening mechanism; 71. a fastening block; 72. fastening a bolt; 73. fastening a nut; 8. an air bag; 81. installing a pipe; 82. a seal ring; 83. a rubber pad; 9. and a hydraulic cylinder.
Detailed Description
The first embodiment is as follows: a civil air defense door sealing performance detection device comprises a base 1, a negative pressure box 2 fixedly connected to the top of the base 1, a positive pressure box 3 arranged on the top of the base 1, a plurality of air bags 8 arranged on one side of the positive pressure box 3, which is far away from the negative pressure box 2, an exhaust pipe 51 arranged on one side of the negative pressure box 2, which is far away from the positive pressure box 3, a vacuum pump 5 fixedly connected to the exhaust pipe 51, a pressure gauge 52 fixedly connected to the negative pressure box 2 and used for detecting air pressure in the negative pressure box 2, an inflation pipe 61 fixedly connected to the positive pressure box 3 and an inflation pump 6 fixedly connected to the inflation pipe 61; the negative pressure box 2 and the positive pressure box 3 are provided with accommodating cavities 4 on the sides close to each other, the air exhaust pipe 51 is communicated with the negative pressure box 2, and the inflation pipe 61 is communicated with the positive pressure box 3; the gasbag 8 is provided with phosphor powder in, and the door frame is installed between negative-pressure tank 2 and malleation case 3 and sets up with negative-pressure tank 2 and malleation case 3 seal.
Install the door leaf on the door frame, then install the door frame between positive pressure tank 3 and negative pressure tank 2, then aerify in the middle of to positive pressure tank 3 through inflator pump 6, make gasbag 8 aerify the inflation, then take out the gas in negative pressure tank 2 through vacuum pump 5, make negative pressure tank 2 be in the negative pressure state, and last a period, then dismantle the door frame from between positive pressure tank 3 and negative pressure tank 2, place door frame and door leaf into and observe where to adhere to phosphor powder in the darkroom, if adhere to phosphor powder, then prove that door leaf leakproofness can not reach the requirement, observe where to adhere to phosphor powder and just can confirm where leakproofness is poor, thereby can be maintained to pertinence.
The positive pressure box 3 can slide on the base 1 along the direction close to and far away from the negative pressure box 2, a hydraulic cylinder 9 fixedly connected to the base 1 is arranged on one side of the positive pressure box 3 away from the negative pressure box 2, and a piston rod of the hydraulic cylinder 9 is fixedly connected to one side of the positive pressure box 3 away from the negative pressure box 2; the top and two sides of the positive pressure box 3 and the negative pressure box 2 are provided with fastening mechanisms 7, each fastening mechanism 7 comprises two fastening blocks 71 fixedly connected to the positive pressure box 3 and the negative pressure box 2 respectively, a fastening bolt 72 penetrating through the two fastening blocks 71 along the sliding direction of the positive pressure box 3 and a fastening nut 73 in threaded connection with the fastening bolt 72; the sealing groove 41 is formed in one side, close to each other, of the negative pressure box 2 and the positive pressure box 3, the shape and the size of the sealing groove 41 are the same as those of the door frame, and when the negative pressure box 2 and the positive pressure box 3 are close to each other and contact each other, the distance between the two sides, away from each other, of the two sealing grooves 41 is equal to the width of the door frame. One side that two seal grooves 41 deviate from each other all fixedly connected with sealed the pad 42, sealed pad 42 is the rectangle annular setting.
When the door frame is installed, the door frame is firstly placed in the sealing groove 41 of the negative pressure box 2, then the hydraulic cylinder 9 pushes the positive pressure box 3 to slide towards the direction close to the negative pressure box 2 until the mutually close sides of the positive pressure box 3 and the negative pressure box 2 are mutually attached, so that the door frame is simultaneously clamped in the two sealing grooves 41, and the contact part of the door frame and the positive pressure box 3 as well as the negative pressure box 2 can be sealed through the sealing gasket 42; then, the fastening bolts 72 in each fastening mechanism 7 are passed through the two fastening blocks 71 and the fastening nuts 73 are tightened on the fastening bolts 72, so that the positive pressure tank 3 and the negative pressure tank 2 are sealingly fixed.
The positive pressure case 3 deviates from 2 one sides of negative pressure case and sets up a plurality of mounting holes 31 that run through 3 lateral walls of positive pressure case, is provided with threaded connection's installation pipe 81 on negative pressure case 2 in the middle of the mounting hole 31, installation pipe 81 and 8 one-to-one of gasbag, installation pipe 81 and corresponding 8 fixed connection of gasbag be in the same place and communicate each other. The outside cover that the installation pipe 81 is close to gasbag 8 one end is equipped with sealing ring 82 of fixed connection on installation pipe 81, and sealing ring 82 is close to positive pressure case 3 one side fixedly connected with rubber pad 83. When the air bag 8 is installed, the fluorescent powder is firstly sent into the air bag 8 through the inner cavity of the installation tube 81, then the installation tube 81 is inserted into the installation hole 31 and the installation tube 81 is screwed on the positive pressure box 3 until the rubber pad 83 is completely attached to one side of the positive pressure box 3, which deviates from the negative pressure box 2.
The working principle of the civil air defense door leaf sealing performance detection device when in use is as follows: the door leaf is installed on a door frame, the door frame is installed between the positive pressure box 3 and the negative pressure box 2, when the door frame is installed, the door frame is firstly placed in the sealing groove 41 of the negative pressure box 2, then the hydraulic cylinder 9 pushes the positive pressure box 3 to slide towards the direction close to the negative pressure box 2 until the sides, close to each other, of the positive pressure box 3 and the negative pressure box 2 are mutually attached, so that the door frame is simultaneously clamped into the two sealing grooves 41, and the contact part of the door frame and the positive pressure box 3 as well as the negative pressure box 2 can be sealed through the sealing gasket 42; then, the fastening bolts 72 in each fastening mechanism 7 are passed through the two fastening blocks 71 and the fastening nuts 73 are tightened on the fastening bolts 72, so that the positive pressure tank 3 and the negative pressure tank 2 are sealingly fixed. Then inflate in the middle of to malleation case 3 through inflator pump 6 for gasbag 8 inflates and expands, then take out the gas in negative-pressure box 2 through vacuum pump 5, make negative-pressure box 2 be in the negative pressure state, and last a period, then dismantle the door frame from between malleation case 3 and negative-pressure box 2, place door frame and door leaf into in the darkroom and observe where to adhere to phosphor powder, if adhere to phosphor powder, prove that the door leaf leakproofness can not reach the requirement, observe where to adhere to phosphor powder and just can confirm where the leakproofness is poor, thereby can the pertinence maintain.
Example two: a civil air defense door leaf sealing performance detection method is characterized in that: the method comprises the following steps:
a. filling fluorescent powder: fluorescent powder is filled in the air bag 8;
b. door leaf installation: installing a door leaf of the civil air defense door on a door frame;
c. installing a door frame: installing a door frame into a sealing groove 41 of a negative pressure box 2, then driving a positive pressure box 3 to slide towards the direction close to the negative pressure box 2 through a hydraulic cylinder 9, enabling the door frame to be embedded into the sealing groove 41 of the positive pressure box 3 until the sides, close to each other, of the positive pressure box 3 and the negative pressure box 2 are mutually attached, then enabling a fastening bolt 72 to penetrate through two fastening blocks 71 of the same fastening mechanism 7, and then screwing a fastening nut 73 to fasten the fastening bolt 72 on the two fastening blocks 71;
d. installation of the airbag 8: inserting the installation pipe 81 into the installation hole 31, then screwing down the installation pipe 81 to enable the rubber pad 83 on the installation pipe 81 to be attached to the positive pressure box 3, and then inflating towards the positive pressure box 3 through the inflator pump 6 to enable the air bag 8 to inflate;
e. and (3) reducing pressure: the vacuum pump 5 is used for pumping out the gas in the negative pressure box 2, so that the gas pressure in the negative pressure box 2 is smaller than the atmospheric pressure, the pressure gauge 52 is used for observing the gas pressure in the negative pressure box 2, the vacuum pump 5 continues to work when the numerical value is increased by observing the numerical value on the pressure gauge 52, the pressure in the negative pressure box 2 is inconvenient to maintain, and the pressure stabilizing time is controlled to be 24 hours;
f. and (3) shading and observing: and after the pressure is stabilized for 24 hours, filling gas into the negative pressure box 2 to enable the negative pressure box 2 to return to the normal pressure, then detaching the civil air defense door from the space between the negative pressure box 2 and the positive pressure box 3, then sending the civil air defense door into a darkroom, and observing whether the fluorescent powder is adhered to the civil air defense door and where the fluorescent powder is adhered.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (3)
1. The utility model provides a people's air defense door leaf sealing performance detection device which characterized in that: the device comprises a base (1), a negative pressure box (2) fixedly connected to the top of the base (1), a positive pressure box (3) arranged at the top of the base (1), a plurality of air bags (8) arranged on one side of the positive pressure box (3) far away from the negative pressure box (2), an exhaust tube (51) arranged on one side of the negative pressure box (2) far away from the positive pressure box (3), a vacuum pump (5) fixedly connected to the exhaust tube (51), a pressure gauge (52) fixedly connected to the negative pressure box (2) and used for detecting air pressure in the negative pressure box (2), an inflation tube (61) fixedly connected to the positive pressure box (3) and an inflation pump (6) fixedly connected to the inflation tube (61);
fluorescent powder is arranged in the air bag (8), the containing cavities (4) are formed in the sides, close to each other, of the negative pressure box (2) and the positive pressure box (3), and the door frame is installed between the negative pressure box (2) and the positive pressure box (3) and is hermetically arranged with the negative pressure box (2) and the positive pressure box (3);
the side, close to each other, of each of the negative pressure box (2) and the positive pressure box (3) is provided with a sealing groove (41), the shape and the size of each sealing groove (41) are the same as those of the door frame, and when the side, close to each other, of each negative pressure box (2) and the side, close to each other, of each positive pressure box (3) are in mutual contact, the distance between the sides, away from each other, of the two sealing grooves (41) is equal to the width of the door frame;
one sides of the two sealing grooves (41) which are deviated from each other are fixedly connected with sealing gaskets (42), and the sealing gaskets (42) are arranged in a rectangular ring shape;
the positive pressure box (3) can slide on the base (1) along the direction close to and far away from the negative pressure box (2), one side of the positive pressure box (3) far away from the negative pressure box (2) is provided with a hydraulic cylinder (9) fixedly connected to the base (1), and a piston rod of the hydraulic cylinder (9) is fixedly connected to one side of the positive pressure box (3) far away from the negative pressure box (2);
the top and two sides of the positive pressure box (3) and the negative pressure box (2) are provided with fastening mechanisms (7), each fastening mechanism (7) comprises two fastening blocks (71) which are fixedly connected to the positive pressure box (3) and the negative pressure box (2) respectively, a fastening bolt (72) which penetrates through the two fastening blocks (71) along the sliding direction of the positive pressure box (3), and a fastening nut (73) which is in threaded connection with the fastening bolt (72);
the positive pressure case (3) deviate from negative pressure case (2) one side and set up a plurality of mounting holes (31) that run through positive pressure case (3) lateral wall, be provided with installation pipe (81) on threaded connection negative pressure case (2) in the middle of mounting hole (31), installation pipe (81) and gasbag (8) one-to-one, installation pipe (81) and gasbag (8) fixed connection that correspond are in the same place and communicate each other.
2. The civil air defense door leaf sealing performance detection device of claim 1, wherein: the outer side cover that installation pipe (81) are close to gasbag (8) one end is equipped with sealing ring (82) of fixed connection on installation pipe (81), and sealing ring (82) are close to positive pressure case (3) one side fixedly connected with rubber pad (83).
3. A method for detecting the sealing performance of a civil air defense door leaf by using the device for detecting the sealing performance of the civil air defense door leaf as claimed in any one of claims 1 to 2, which is characterized in that: the method comprises the following steps:
a. filling fluorescent powder: fluorescent powder is filled in the air bag (8);
b. door leaf installation: installing a door leaf of the civil air defense door on a door frame;
c. installing a door frame: the method comprises the steps that a door frame is installed in a sealing groove (41) of a negative pressure box (2), then a hydraulic cylinder (9) drives a positive pressure box (3) to slide towards the direction close to the negative pressure box (2) and enables the door frame to be embedded into the sealing groove (41) of the positive pressure box (3) until the sides, close to each other, of the positive pressure box (3) and the negative pressure box (2) are attached to each other, then a fastening bolt (72) penetrates through two fastening blocks (71) of the same fastening mechanism (7), and then a fastening nut (73) is screwed up to fasten the fastening bolt (72) on the two fastening blocks (71);
d. mounting airbag (8): the mounting pipe (81) is inserted into the mounting hole (31), then the mounting pipe (81) is screwed down to enable the rubber pad (83) on the mounting pipe (81) to be attached to the positive pressure box (3), and then the air bag (8) is inflated and expanded towards the positive pressure box (3) through the inflator pump (6);
e. and (3) reducing pressure: the air in the negative pressure box (2) is pumped out through the vacuum pump (5), so that the air pressure in the negative pressure box (2) is smaller than the atmospheric pressure, the pressure gauge (52) is used for observing the air pressure in the negative pressure box (2), when the numerical value is increased by observing the numerical value on the pressure gauge (52), the vacuum pump (5) continues to work, the pressure in the negative pressure box (2) is kept inconvenient, and the pressure stabilizing time is controlled to be 24 hours;
f. and (3) shading and observing: and after the pressure is stabilized for 24 hours, filling gas into the negative pressure box (2) to enable the negative pressure box (2) to return to the normal pressure, then detaching the civil air defense door from the space between the negative pressure box (2) and the positive pressure box (3), then sending the civil air defense door into a darkroom, and observing whether the fluorescent powder is adhered to the civil air defense door and where the fluorescent powder is adhered.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010002264.6A CN111189593B (en) | 2020-01-02 | 2020-01-02 | Device and method for detecting sealing performance of civil air defense door leaf |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010002264.6A CN111189593B (en) | 2020-01-02 | 2020-01-02 | Device and method for detecting sealing performance of civil air defense door leaf |
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| CN111189593A CN111189593A (en) | 2020-05-22 |
| CN111189593B true CN111189593B (en) | 2021-07-30 |
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| CN202010002264.6A Active CN111189593B (en) | 2020-01-02 | 2020-01-02 | Device and method for detecting sealing performance of civil air defense door leaf |
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| CN111964845A (en) * | 2020-08-25 | 2020-11-20 | 中国矿业大学 | Air leakage detection device and method for vertical air shaft explosion door |
| CN112816152B (en) * | 2020-12-31 | 2023-03-10 | 四川永志人防设备检测有限公司 | Airtight equipment gas tightness detecting system among civil air defense engineering |
| CN113210282B (en) * | 2021-01-29 | 2022-10-11 | 广西人防设计研究院有限公司 | Civil air defense door sealing performance detection system |
| CN115979540B (en) * | 2023-03-22 | 2023-05-23 | 江苏上田民防设备有限公司 | Civil air defense door gas tightness testing arrangement |
| CN116989956B (en) * | 2023-09-28 | 2023-12-05 | 南通市建筑工程质量检测中心 | On-spot airtight watertight performance check out test set of exterior window |
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| CN109141777B (en) * | 2018-09-27 | 2020-10-20 | 陕西北辰人防设备设施检测有限公司 | Device and method for detecting sealing performance of door leaf of civil air defense door |
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