CN113916465A - Method and device for detecting sealing performance of protective sealed door - Google Patents
Method and device for detecting sealing performance of protective sealed door Download PDFInfo
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- CN113916465A CN113916465A CN202111200118.5A CN202111200118A CN113916465A CN 113916465 A CN113916465 A CN 113916465A CN 202111200118 A CN202111200118 A CN 202111200118A CN 113916465 A CN113916465 A CN 113916465A
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- 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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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Abstract
The invention belongs to the technical field of protection engineering detection, and particularly relates to a detection method and a detection device for the sealing performance of a protective airtight door. The method for detecting the sealing performance of the protective sealed door comprises four steps, wherein the first step is to build a detection device, and a sealed chamber is built by utilizing a door frame and a door body of the protective sealed door; detecting the air tightness of the detection device; inflating the closed chamber to a preset overpressure value; and step four, detecting the air leakage of the door leaf. The device for detecting the sealing performance of the protective sealed door comprises an air source, a flowmeter, a barometer, a first film, a second film and an opening and closing piece. The invention can confirm the air tightness of the detection device during detection, has accurate measurement result, can solve the problem that the detection of the sealing performance after the installation on the engineering site can not be directly measured, and has the characteristics of safety, reliability, material saving, environmental protection and high efficiency.
Description
Technical Field
The invention belongs to the technical field of protection engineering detection, and particularly relates to a method and a device for detecting the sealing performance of a protective airtight door.
Background
The protective equipment is arranged at the entrance and exit of protective engineering personnel and equipment, and is used for blocking shock waves, biochemical toxicants or weakening shock waves at the mouth parts of an air inlet pipe (pit) and a smoke exhaust pipe (pit), and the sealing performance is a key quality control project. A protective airtight door (including an airtight door) is taken as an important protective device, and a method which can be directly measured is not available for detecting the airtight performance after installation in an engineering field.
In addition, the commonly used sealing performance detection methods of the protective equipment include a flow method and a pressure difference method. The method is limited by conditions specified by a standard method, and direct detection of a single-door protective airtight door (including an airtight door) can only be carried out in a laboratory or a protective equipment production workshop at present and cannot be realized on a project site, so that the detection of the airtight performance of the protective equipment at present after installation cannot be realized, and huge hidden dangers are left for the overall protective performance of the project.
Disclosure of Invention
In order to solve the problems, the invention provides a method and a device for detecting the sealing performance of a protective sealed door, and the technical scheme is as follows:
a method for detecting the sealing performance of a protective sealing door comprises the following steps:
the method comprises the following steps: building a detection device, and building a closed chamber by using a door frame and a door body of a protective airtight door;
step two: detecting the air tightness of the detection device;
step three: inflating the closed chamber to a predetermined overpressure value;
step four: and detecting the air leakage of the door leaf.
The method for detecting the sealing performance of the protective sealing door as described above is further preferably: in the first step, the detection device comprises an air source, a flowmeter, a barometer, an air inlet pipe, a pressure measuring pipe, a first film and a second film; the closed chamber comprises a first closed chamber and a second closed chamber; the first closed chamber is formed by enclosing the first film, the door frame and the door leaf, the second closed chamber is formed by enclosing the first film, the door frame and the second film, and the second film is positioned on one side of the first film, which is far away from the door leaf; the air inlet pipe is provided with the flowmeter, one end of the air inlet pipe is connected with the air source, and the other end of the air inlet pipe is connected with the second film to be communicated with the second closed chamber; and one end of the pressure measuring pipe is provided with the barometer, and the other end of the pressure measuring pipe is connected with the second film to be communicated with the second closed chamber.
The method for detecting the sealing performance of the protective sealing door as described above is further preferably: in the first step, the first film and the second film are both bonded and connected with the door frame at the periphery; the first film and the second film are both polyethylene films and are bonded to the door frame by fiber adhesive tapes.
The method for detecting the sealing performance of the protective sealing door as described above is further preferably: in the second step, the first film is detected by the first closed chamberThe gas tightness of the membrane and the second thin film; inflating the first closed chamber to a preset overpressure value, if the air leakage of the first closed chamber is less than 0.001m3The detection requirement is met; if the air leakage of the first closed chamber is not less than 0.001m3And h, re-constructing the detection device.
The method for detecting the sealing performance of the protective sealing door as described above is further preferably: and in the third step, before the first closed chamber is inflated, the first film is damaged through an opening and closing piece, so that the first closed chamber is communicated with the second closed chamber.
The method for detecting the sealing performance of the protective sealing door as described above is further preferably: in the fourth step, the air inflation amount is the air leakage amount of the door leaf.
A device for detecting the sealing performance of a protective sealing door is used for implementing the method for detecting the sealing performance of the protective sealing door and comprises an air source, a flowmeter, a barometer, a first film, a second film and an opening and closing piece; the first film is arranged on a door frame of the protective airtight door and forms a first airtight chamber with the door frame and the door leaf of the protective airtight door in an enclosing mode; the second film is arranged on the door frame of the protective airtight door, is positioned on one side of the first film, which is far away from the door leaf, and forms a second airtight chamber together with the door frame of the protective airtight door and the first film; the air source is communicated with the second closed chamber and is used for inflating the second closed chamber; the flow meter is connected between the air source and the second closed chamber and is used for detecting the inflation flow of the air source; the barometer is communicated with the second closed chamber and is used for detecting the air pressure of the second closed chamber; the opening and closing member is mounted on the first film and used for destroying the air tightness of the first film so as to communicate the first closed chamber and the second closed chamber.
The device for detecting the sealing performance of the protective sealing door as described above is more preferably: a first quick-connection joint and a second quick-connection joint are arranged on the second film; the gas source is detachably connected with the first quick connector through a gas inlet pipe, and the flowmeter is arranged on the gas inlet pipe; the barometer is detachably connected with the second quick connector through a piezometer tube.
The device for detecting the sealing performance of the protective sealing door as described above is more preferably: the volume of the second closed chamber is larger than that of the first closed chamber.
The device for detecting the sealing performance of the protective sealing door as described above is more preferably: the first film is a polyethylene film and is connected with the door frame in an adhesive manner through a fiber adhesive tape; the second film is a polyethylene film and is connected with the door frame in an adhesive manner through a fiber adhesive tape.
The device for detecting the sealing performance of the protective sealing door as described above is more preferably: the opening and closing piece is an electromagnetic valve, and the communication and the partition of the first closed chamber and the second closed chamber are controlled through a switch.
The device for detecting the sealing performance of the protective sealing door as described above is more preferably: the opening and closing piece is a film, an opening is formed in the first film, and the film covers the opening; the thickness of the first film is smaller than that of the second film; the thickness of the adhesive film is smaller than that of the first film.
The device for detecting the sealing performance of the protective sealing door as described above is more preferably: the opening and closing piece comprises a bolt, a first matching hole and a second matching hole; the first matching hole is positioned on the first film and is in threaded connection with the bolt; the second matching hole is positioned on the second film and is in threaded connection with the bolt; the bolt is adapted to rotate within the second mating bore into or out of the first mating bore.
The device for detecting the sealing performance of the protective sealing door as described above is more preferably: and sealing pipe threads are arranged on the first matching hole and the second matching hole.
The device for detecting the sealing performance of the protective sealing door as described above is more preferably: the opening and closing piece comprises a spring, a blade, a traction wire and a fastening ring; one end of the spring is installed on a door frame of the protective airtight door, and the other end of the spring is provided with the blade; the fastening ring is arranged on the second film; one end of the traction wire is connected with the joint point of the blade and the spring, and the other end of the traction wire is connected with the fastening ring and used for bending the spring and promoting the blade to scratch the first film when the traction wire is separated from the fastening ring.
The device for detecting the sealing performance of the protective sealing door as described above is more preferably: the blade is X-shaped and is used for marking an X-shaped opening on the first film.
Analysis shows that compared with the prior art, the invention has the advantages and beneficial effects that:
the invention can confirm the air tightness of the detection device during detection, so that the measurement result is more accurate; the efficiency of detecting the sealing performance of the protective sealing door can be greatly improved, the problem that the sealing performance can not be directly measured after the protective sealing door is installed on the engineering site at present can be solved, the independent detection of the sealing performance of protective sealing doors and sealing door protective equipment of all specifications can be directly realized on the engineering site, the device can also be used for the field detection of the sealing performance of single-structure engineering with the requirement on the sealing performance, such as an engineering mouth passage, a protective sealing partition wall (including the sealing partition wall) and the like, and the device has the characteristics of safety, reliability, saving of operators and auxiliary materials, environmental protection and high efficiency.
Drawings
Fig. 1 is a schematic view of the detection of the airtightness of the second closed chamber.
Fig. 2 is a schematic structural diagram for detecting the sealing performance of the protective airtight door.
Fig. 3 is a schematic diagram of an embodiment of a device for detecting the sealing performance of a protective sealing door.
Fig. 4 is a schematic diagram of a second embodiment of the device for detecting the sealing performance of the protective sealing door.
Fig. 5 is a schematic diagram of a third possible embodiment of a device for detecting the sealing performance of a protective sealing door.
Fig. 6 is a fourth schematic diagram of an implementation example of the device for detecting the sealing performance of the protective sealing door.
In the figure: 1-a door frame; 2-door leaf; 3-a second closed chamber; 4-a first closed chamber; 5-a first film; 6-piezometric tube; 7-an air inlet pipe; 8-a second film; 9-a flow meter; 10-barometer; 11-a gas source; 12-a solenoid valve; 13-sticking a film; 14-a bolt; 15-a spring; 16-a blade; 17-a traction wire.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
Referring to fig. 1 to 6, fig. 1 is a schematic view illustrating the detection of the airtightness of the second sealed chamber; FIG. 2 is a schematic structural diagram of a method for detecting the sealing performance of a protective airtight door; fig. 3 is a schematic diagram of an embodiment of a device for detecting the sealing performance of a protective sealing door; fig. 4 is a schematic diagram of a second embodiment of the device for detecting the sealing performance of the protective sealing door; fig. 5 is a schematic diagram of a third embodiment of a device for detecting the sealing performance of a protective sealing door; fig. 6 is a fourth schematic diagram of an implementation example of the device for detecting the sealing performance of the protective sealing door.
The invention provides a method for detecting the sealing performance of a protective sealing door, which can make up the defects of a method for detecting the sealing performance after installation on a project site, is more accurate, efficient, safe and environment-friendly, and specifically comprises the following steps:
step one, building a detection device, and constructing a closed chamber by utilizing a door frame 1 and a door body of a protective airtight door.
The detection device comprises an air source 11, a flowmeter 9, a barometer 10, an air inlet pipe 7, a pressure measuring pipe 6, a first thin film 5 and a second thin film 8. The closed chamber comprises a first closed chamber 4 and a second closed chamber 3, wherein the first closed chamber 4 is formed by enclosing a first film 5, a door frame 1 and a door leaf 2, and the second closed chamber 3 is formed by enclosing the first film 5, the door frame 1 and a second film 8. The second film 8 is located on the side of the first film 5 remote from the door leaf 2. And a flowmeter 9 is arranged on the air inlet pipe 7, one end of the air inlet pipe 7 is connected with an air source 11, and the other end of the air inlet pipe 7 is connected with a second film 8 to be communicated with the second closed chamber 3. One end of the piezometric tube 6 is provided with a barometer 10, and the other end is connected with the second film 8 to be communicated with the second closed chamber 3.
And step two, detecting the air tightness of the detection device.
At the time of the inspection, the airtightness of the first thin film 5 and the second thin film 8 is inspected by inspecting the airtightness of the second closed chamber 3. Specifically, the air source 11 inflates air through the air inlet pipe 7, the flow meter 9 detects inflation flow, the barometer 10 detects air pressure of the second closed chamber 3, the second closed chamber 3 is inflated to a preset overpressure value through the second film 8, air leakage of the second closed chamber 3 is detected at the moment, and the inflation flow detected by the flow meter 9 is the air leakage.
If the air leakage of the second closed chamber 3 is less than 0.001m3The detection requirement is met, and the detection on the tightness of the protective airtight door can be continuously carried out; if the air leakage of the second closed chamber 3 is not less than 0.001m3And/h, where there is a leak, it is necessary to inspect or reattach the first film 5 and/or the second film 8.
And step three, inflating the closed chamber to a preset overpressure value.
Before the closed chamber is inflated, the first film 5 needs to be destroyed to enable the second closed chamber 3 to be communicated with the first closed chamber 4, so that the closed chamber is directly enclosed by the second film 8, the door frame 1 and the door body, and the first film 5 does not obstruct the circulation of gas.
In breaking the airtightness of the first film 5, this can be achieved by various methods. Specifically, the first film 5 is provided with an opening and closing member, and the air tightness of the first film 5 is broken by the opening and closing member. For example, the opening and closing member is an electromagnetic valve 12, and the communication and the separation of the first closed chamber 4 and the second closed chamber 3 can be controlled by opening and closing the electromagnetic valve 12; the opening and closing piece is a film 13, the first film 5 is provided with an opening, the film 13 covers the opening, the thickness of the first film 5 is smaller than that of the second film 8, the thickness of the film 13 is smaller than that of the first film 5, and the connection and the disconnection of the first closed chamber 4 and the second closed chamber 3 are controlled by pressurizing and destroying the film 13; the opening and closing piece comprises a bolt 14, a first matching hole and a second matching hole, wherein the bolt 14 rotates in the second matching hole to enter or separate from the first matching hole, so that the communication and the partition of the first closed chamber 4 and the second closed chamber 3 are controlled; the opening and closing member includes spring 15, blade 16, pull wire 17 and tight loop, and the one end of spring 15 is installed on door frame 1, and blade 16 is installed to the other end, and the tight loop is installed on second film 8, and the juncture of blade 16 and spring 15 is connected to pull wire 17 one end, and the tight loop is connected to the other end to stretch bending spring 15 can make blade 16 draw out first film 5 when pull wire 17 breaks away from the tight loop, with the first airtight chamber 4 of intercommunication and second airtight chamber 3.
And step four, detecting the air leakage of the door leaf 2.
When the air is inflated to the preset overpressure in the third step, the air inflation amount is the air leakage amount of the door leaf 2, and the reading of the flowmeter 9 is read.
The method for detecting the sealing performance of the protective sealed door can confirm the air tightness of the detection device during detection, so that the measurement result is more accurate; the efficiency of detecting the sealing performance of the protective sealing door can be greatly improved, the problem that the sealing performance can not be directly measured after the protective sealing door is installed on the engineering site at present can be solved, the independent detection of the sealing performance of protective sealing doors and sealing door protective equipment of all specifications can be directly realized on the engineering site, the device can also be used for the field detection of the sealing performance of single-structure engineering with the requirement on the sealing performance, such as an engineering mouth passage, a protective sealing partition wall (including the sealing partition wall) and the like, and the device has the characteristics of safety, reliability, saving of operators and auxiliary materials, environmental protection and high efficiency.
Meanwhile, the invention also provides a device for detecting the sealing performance of the protective airtight door, which mainly comprises an air source 11, a flowmeter 9, a barometer 10, a first film 5, a second film 8 and an opening and closing member. Specifically, the first film 5 is installed on a doorframe 1 of the protective airtight door, and encloses a first airtight chamber 4 with the doorframe 1 and a door leaf 2 of the protective airtight door. The second film 8 is installed on the door frame 1 of the protective airtight door, is positioned on one side of the first film 5 far away from the door leaf 2, and forms a second airtight chamber 3 with the door frame 1 and the first film 5 of the protective airtight door in an enclosing mode. The air source 11 is communicated with the second closed chamber 3; the flowmeter 9 is connected between the air source 11 and the second closed chamber 3; the barometer 10 is communicated with the second closed chamber 3; the opening and closing member is mounted on the first film 5.
When the sealing performance of the protective sealed door is detected, the air tightness of the second sealed chamber 3 is detected. At this time, the air source 11 inflates the second closed chamber 3, the flow meter 9 detects the inflation flow of the air source 11 in real time, and the barometer 10 detects the air pressure of the second closed chamber 3 in real time. When the air pressure of the second closed chamber 3 is maintained at a stable state, the inflation flow of the air source 11 measured by the flow meter 9 is the air leakage of the second closed chamber 3. When the air leakage of the second closed chamber 3 meets the use requirement (less than 0.001 m)3And h), the sealing performance of the protective sealing door can be detected. During the detection, the opening and closing member operates to break the airtightness of the first film 5, thereby allowing the first sealed chamber 4 and the second sealed chamber 3 to communicate with each other. At this time, the air source 11 continuously inflates the second sealed chamber 3 communicated with the first sealed chamber 4, the sealed space enclosed by the second film 8, the door frame 1 and the door leaf 2 of the protective sealed door becomes an overpressure chamber, and when the value detected by the barometer 10 is kept unchanged, the inflation flow of the air source 11 detected by the flowmeter 9 is the air leakage of the protective sealed door under the air pressure.
Further, in the invention, the first film 5 is a polyethylene film, and the first film 5 is bonded and connected with the door frame 1 through a fiber adhesive tape; the second film 8 is a polyethylene film, and the second film 8 is bonded with the door frame 1 through a fiber adhesive tape. The bonding connection mode is simple and convenient, and the air leakage part is not easy to exist; the first film 5 and the second film 8 are both polyethylene films, so that the film can be repeatedly used, and materials are saved.
Further, in the present invention, the second film 8 is provided with a first quick connect joint and a second quick connect joint; the gas source 11 is detachably connected with the first quick connector through the gas inlet pipe 7, and the flowmeter 9 is arranged on the gas inlet pipe 7; the barometer 10 is detachably connected with the second quick-connect joint through the piezometer tube 6. When the detection device is built and dismantled, the first quick connector can be quickly plugged with the air inlet pipe 7, and the second quick connector can be quickly plugged with the pressure measuring pipe 6, so that the detection device can be quickly built and dismantled, time is saved, and efficiency is improved.
Furthermore, in the invention, the volume of the second closed chamber 3 is larger than that of the first closed chamber 4, when the air tightness of the detection device is detected, the opening and closing part destroys the air tightness of the first film 5, and the gas in the second closed chamber 3 can rapidly flow into the first closed chamber 4, so that the air pressure difference value of the first closed chamber 4 and the second closed chamber 3 is rapidly balanced, the rapid detection of the sealing performance of the protective closed door is realized, the detection time is saved, and the detection efficiency is improved.
When the airtightness of the first film 5 is broken by the opening and closing member, the present invention provides the following various possible embodiments.
In the first embodiment of the present invention, the opening and closing member is a solenoid valve 12, and the connection and disconnection between the first closed chamber 4 and the second closed chamber 3 can be controlled by opening and closing the solenoid valve 12. Specifically, the electromagnetic valve 12 may be connected to a remote controller, and the opening and closing of the electromagnetic valve 12 may be controlled by the remote controller. The electromagnetic valve 12 is closed when the airtightness of the detection device itself is confirmed, and the electromagnetic valve 12 is opened when the sealing performance of the protective airtight door is detected.
In the present invention, the opening and closing member is a film 13, the first film 5 is provided with an opening, and the film 13 covers the opening. Specifically, the thickness of the first film 5 is smaller than that of the second film 8; the thickness of the adhesive film 13 is smaller than the thickness of the first film 5. When the air pressure of the second closed chamber 3 rises to the limit of the bearing capacity of the film 13, the film 13 is broken, so that the communication between the first closed chamber 4 and the second closed chamber 3 can be realized. Of course, as a variation of this embodiment, the opening and closing member may not be provided on the first film 5, and only the thickness of the first film 5 is set to be smaller than that of the second film 8, so that when the air pressure in the second closed chamber 3 is increased to the limit of the bearing capacity of the first film 5, the first film 5 is broken and the first closed chamber 4 is communicated with the second closed chamber 3.
In the present invention, the opening and closing member includes the bolt 14, the first fitting hole and the second fitting hole. Specifically, the first matching hole is positioned on the first film 5 and is in threaded connection with the bolt 14; a second mating hole is located in the second membrane 8 and is threadedly engaged with the bolt 14. The bolt 14 can be rotated within the second mating hole to enter or exit the first mating hole. When the bolt 14 enters the first matching hole, the first closed chamber 4 and the second closed chamber 3 are in an isolated state; when the bolt 14 is disengaged from the first mating hole, the first closed chamber 4 and the second closed chamber 3 are in a communicating state.
Further, in the third embodiment, it is preferable that the first fitting hole and the second fitting hole are both provided with a seal pipe thread, so that airtightness when the bolt 14 is fitted to the first fitting hole and the second fitting hole can be ensured.
In the present invention, the opening and closing member includes a spring 15, a blade 16, a pulling wire 17 and a fastening ring. Specifically, one end of the spring 15 is mounted on the doorframe 1 of the protective airtight door, and the other end is mounted with the blade 16. The tight loop is installed on second film 8, and the tight loop is the rubber material, and there is a hole in the center to allow pull wire 17 to pass through, and can close by oneself, and the tight loop also can be replaced with current check valve. One end of the traction wire 17 is connected with a joint point of the blade 16 and the spring 15, the spring 15 is pulled to the direction away from the first film 5, and the other end of the traction wire is connected with the fastening ring, penetrates out of a hole in the center of the fastening ring and is clamped by the fastening ring (for example, the end part of the traction wire 17 can be knotted and clamped at the fastening ring). When the pulling wire 17 is pulled off the fastening ring (for example, the knotted part of the pulling wire 17 is cut off or blown), the spring 15 rebounds due to the elastic force, and the blade 16 can cut the first film 5 under the action of the spring 15, so as to communicate the first closed chamber 4 with the second closed chamber 3.
Further, in the fourth possible embodiment, the blade 16 is preferably shaped like an X, which can cut an X-shaped opening in the first film 5, so as to facilitate rapid equalization of the air pressures in the first and second closed chambers 4 and 3.
In one embodiment of the invention, the detection object is a steel structure protective airtight door GFM1020(6), and the volume of an airtight chamber is about 0.2m3According to RFJ01-2002 and RFJ04-2009 standards, two overpressure values of 50Pa and 100Pa are adopted for detecting air leakage of the protective equipment. Therefore, the test also follows the two overpressure values, and the air leakage of the closed chamber is 0.0006m at 50Pa and 100Pa3H and 0.0008m3H, the air leakage is less than 0.001m3And h, the self sealing performance of the sealed chamber meets the requirement of detection work.
After the requirement of the sealing performance of the sealed chamber is confirmed, the first film 5 is damaged, the air leakage of the steel structure protective sealed door GFM1020(6) is actually measured for 3 times, and the average actually measured air leakage is 0.1785m3H, less than 0.306m of the maximum allowable air leakage of the door3And/h, according to RFJ01-2002 and RFJ04-2009, the detection result is qualified. Therefore, the method can be qualified for field detection tasks.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (10)
1. The method for detecting the sealing performance of the protective airtight door is characterized by comprising the following steps of:
the method comprises the following steps: building a detection device, and building a closed chamber by using a door frame and a door body of a protective airtight door;
step two: detecting the air tightness of the detection device;
step three: inflating the closed chamber to a predetermined overpressure value;
step four: and detecting the air leakage of the door leaf.
2. The method for detecting the sealing performance of the protective sealing door according to claim 1, wherein:
in the first step, the detection device comprises an air source, a flowmeter, a barometer, an air inlet pipe, a pressure measuring pipe, a first film and a second film;
the closed chamber comprises a first closed chamber and a second closed chamber;
the first closed chamber is formed by enclosing the first film, the door frame and the door leaf, the second closed chamber is formed by enclosing the first film, the door frame and the second film, and the second film is positioned on one side of the first film, which is far away from the door leaf;
the air inlet pipe is provided with the flowmeter, one end of the air inlet pipe is connected with the air source, and the other end of the air inlet pipe is connected with the second film to be communicated with the second closed chamber;
and one end of the pressure measuring pipe is provided with the barometer, and the other end of the pressure measuring pipe is connected with the second film to be communicated with the second closed chamber.
3. The method for detecting the sealing performance of the protective airtight door according to claim 2, wherein:
in the first step, the first film and the second film are both bonded and connected with the door frame at the periphery;
the first film and the second film are both polyethylene films and are bonded to the door frame by fiber adhesive tapes.
4. The method for detecting the sealing performance of the protective airtight door according to claim 2, wherein:
in the second step, the air tightness of the first film and the second film is detected through the first closed chamber;
inflating the first closed chamber to a preset overpressure value, if the air leakage of the first closed chamber is less than 0.001m3The detection requirement is met; if the air leakage of the first closed chamber is not less than 0.001m3And h, re-constructing the detection device.
5. The method for detecting the sealing performance of the protective airtight door according to claim 2, wherein:
and in the third step, before the first closed chamber is inflated, the first film is damaged through an opening and closing piece, so that the first closed chamber is communicated with the second closed chamber.
6. The method for detecting the sealing performance of the protective sealing door according to claim 1, wherein:
in the fourth step, the air inflation amount is the air leakage amount of the door leaf.
7. A device for detecting the sealing performance of a protective sealing door, which is used for implementing the method for detecting the sealing performance of the protective sealing door according to any one of claims 1 to 6, and which comprises:
the device comprises a gas source, a flowmeter, a barometer, a first film, a second film and an opening and closing piece;
the first film is arranged on a door frame of the protective airtight door and forms a first airtight chamber with the door frame and the door leaf of the protective airtight door in an enclosing mode;
the second film is arranged on the door frame of the protective airtight door, is positioned on one side of the first film, which is far away from the door leaf, and forms a second airtight chamber together with the door frame of the protective airtight door and the first film;
the air source is communicated with the second closed chamber and is used for inflating the second closed chamber;
the flow meter is connected between the air source and the second closed chamber and is used for detecting the inflation flow of the air source;
the barometer is communicated with the second closed chamber and is used for detecting the air pressure of the second closed chamber;
the opening and closing member is mounted on the first film and used for destroying the air tightness of the first film so as to communicate the first closed chamber and the second closed chamber.
8. The apparatus of claim 7, wherein the apparatus comprises:
a first quick-connection joint and a second quick-connection joint are arranged on the second film;
the gas source is detachably connected with the first quick connector through a gas inlet pipe, and the flowmeter is arranged on the gas inlet pipe;
the barometer is detachably connected with the second quick connector through a piezometer tube.
9. The apparatus of claim 7, wherein the apparatus comprises:
the volume of the second closed chamber is larger than that of the first closed chamber.
10. The apparatus of claim 7, wherein the apparatus comprises:
the first film is a polyethylene film and is connected with the door frame in an adhesive manner through a fiber adhesive tape;
the second film is a polyethylene film and is connected with the door frame in an adhesive manner through a fiber adhesive tape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110837832 | 2021-07-23 | ||
| CN2021108378329 | 2021-07-23 |
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| Publication Number | Publication Date |
|---|---|
| CN113916465A true CN113916465A (en) | 2022-01-11 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111200118.5A Pending CN113916465A (en) | 2021-07-23 | 2021-10-14 | Method and device for detecting sealing performance of protective sealed door |
| CN202122482366.5U Active CN215952898U (en) | 2021-07-23 | 2021-10-14 | Device for detecting sealing performance of protective airtight door |
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| CN202122482366.5U Active CN215952898U (en) | 2021-07-23 | 2021-10-14 | Device for detecting sealing performance of protective airtight door |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117490945A (en) * | 2024-01-03 | 2024-02-02 | 四川玖悦消防技术有限公司 | T-shaped airtight detection device |
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2021
- 2021-10-14 CN CN202111200118.5A patent/CN113916465A/en active Pending
- 2021-10-14 CN CN202122482366.5U patent/CN215952898U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117490945A (en) * | 2024-01-03 | 2024-02-02 | 四川玖悦消防技术有限公司 | T-shaped airtight detection device |
| CN117490945B (en) * | 2024-01-03 | 2024-03-29 | 四川玖悦消防技术有限公司 | T-shaped airtight detection device |
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| CN215952898U (en) | 2022-03-04 |
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