CN110005949B - Automatic air-supplementing type airtight door and airtight door control method - Google Patents
Automatic air-supplementing type airtight door and airtight door control method Download PDFInfo
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- CN110005949B CN110005949B CN201910325545.2A CN201910325545A CN110005949B CN 110005949 B CN110005949 B CN 110005949B CN 201910325545 A CN201910325545 A CN 201910325545A CN 110005949 B CN110005949 B CN 110005949B
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- sealing strip
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
- E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
The invention discloses an automatic air-supplementing type airtight door, which comprises a door sealing strip arranged on the periphery of a door leaf of the airtight door, and also comprises an air source, an air charging valve and an air discharging valve, wherein an air outlet of the air source is connected with one end of an air passage channel in the air charging valve, the other end of the air passage channel in the air charging valve is connected with an air charging and discharging port of the door sealing strip, one end of the air passage channel in the air discharging valve is connected with the air charging and discharging port of the door sealing strip, the air charging and discharging port of the door sealing strip is further provided with a second pressure detection module, and the air outlet of the air source is provided with a first pressure detection module. The invention also discloses a control method of the airtight door, which monitors the pressure of the gas in the sealing strip of the door on line in real time, and when the pressure in the sealing strip is too low, the gas supplementing work is automatically completed, so that the pressure of the sealing strip of the door is always maintained above a set value, the airtight door is always in an expanded and tightly sealed state, and the problem that the tightness of the airtight door is naturally reduced is solved.
Description
Technical Field
The invention belongs to the field of sealing devices, in particular to an automatic air-supplementing type airtight door, and also relates to an airtight door control method which is applied to houses and facility equipment with strict sealing requirements, such as life science, physical and chemical and biological safety laboratories, medical operating rooms, biopharmaceutical workshops and the like.
Background
The airtight door is a metal door with high airtight requirement and capable of being interlocked to control opening and closing. The airtight door consists of a door frame, a door leaf, an inflatable sealing rubber strip, an inflatable air channel, a deflating air channel, a door lock and the like, so that the sealing strip is inflated when the door is closed, the air scattering function is realized when the door is opened, and the electromagnetic door lock function is realized when the door is closed. The common airtight door is sealed and locked by means of electromagnetic attraction of the door electromagnetic lock and expansion of the door sealing strip. The airtight door is closed, and the door sealing strip is inflated and tightly expanded and is in a closed state for a long time, so that the gas path can be slowly inflated in actual use, the pressure in the door sealing strip is insufficient, the expansion sealing performance is reduced, and the possibility of communication exists between adjacent rooms.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an automatic air-supplementing type airtight door and an airtight door control method. The pressure of the gas in the sealing strip of the door is monitored on line in real time, and when the pressure in the sealing strip is too low, the gas supplementing work is automatically completed, so that the pressure of the sealing strip of the door is always maintained above a set value, the airtight door is always in an expanded tight sealing state, and the problem that the tightness of the airtight door is naturally reduced is solved.
In order to achieve the above object, the present invention provides the following technical solutions:
the automatic air supplementing type airtight door comprises a door sealing strip arranged on the periphery of a door leaf of the airtight door, and further comprises an air source, an air charging valve and an air discharging valve, wherein an air outlet of the air source is connected with one end of an air passage channel in the air charging valve, the other end of the air passage channel in the air charging valve is connected with an air charging and discharging port of the door sealing strip, one end of the air passage channel in the air discharging valve is connected with the air charging and discharging port of the door sealing strip, a second pressure detection module is further arranged at the air outlet of the air source, a first pressure detection module is arranged at the air outlet of the air source, the control end of the air charging valve, the control end of the air discharging valve, a door opening button and a door closing button are respectively connected with a controller, and the controller is further connected with a coil module of an electromagnetic lock arranged on the door frame and is further connected with a proximity switch arranged on the door frame.
The airtight door control method specifically comprises the following steps:
step 1.1, pressing a door opening button, and sending a door opening signal to a controller by the door opening button;
step 1.2, after the controller receives a door opening signal, detecting the air supply pressure of an air outlet of an air source through a first pressure detection module to obtain an air supply pressure signal, and sending the air supply pressure signal to the controller by the first pressure detection module;
step 1.3, the controller judges the magnitude of the air supply pressure signal and the set air supply pressure threshold value,
if the air supply pressure signal is greater than or equal to the set air supply pressure threshold value, the controller controls the air passage in the air charging valve to be closed, the controller controls the air passage in the air discharging valve to be opened, air in the door sealing strip is discharged outwards through the air passage in the air discharging valve, after the air discharging set time, the controller controls the air passage in the air discharging valve to be closed, the controller controls the coil module of the electromagnetic lock to be powered off, the controller controls the indicator lamp to be in a door opening state, and the air sealing door is pulled open manually;
if the air supply pressure signal is smaller than the set air supply pressure threshold value, the controller controls the air passage in the air charging valve to be closed, the controller controls the air passage in the air discharging valve to be closed, and the controller controls the indicator lamp to be in a fault state.
The airtight door control method further comprises a door closing step, and specifically comprises the following steps:
step 2.1, manually closing a door leaf of the airtight door, outputting a contact signal to a controller by a proximity switch, outputting a locking signal to the controller by an electromagnetic lock, forming a door locking signal by the contact signal and the locking signal,
step 2.2, after the controller receives a door closing signal, the controller controls the opening of a gas passage in the inflation valve, the controller controls the closing of the gas passage in the deflation valve, the gas source inflates the door sealing strip through the gas passage in the inflation valve, after the inflation setting time, the controller controls the opening of the gas passage in the inflation valve, the controller records the inflation ending time, and the controller controls the indicator lamp to be in a door closing state;
step 2.3, monitoring the sealing strip pressure in the door sealing strip in real time through a second pressure detection module to obtain a sealing strip pressure signal, and transmitting the sealing strip pressure signal to a controller through the second pressure detection module;
step 2.4, the controller compares the sealing strip pressure signal with a set sealing pressure threshold value:
step 2.5, if the sealing strip pressure signal is greater than or equal to the set sealing pressure threshold value, returning to the step 2.4;
if the sealing strip pressure signal is smaller than the set sealing pressure threshold value, calculating the difference between the current time and the latest inflation ending time to obtain inflation interval time,
if the inflation interval time is greater than or equal to the set interval threshold value, the controller 7 controls the opening of the air passage in the inflation valve, the controller controls the closing of the air passage in the deflation valve, the air source inflates the door sealing strip through the air passage in the inflation valve, after the inflation setting time, the controller controls the opening of the air passage in the inflation valve, the controller records the inflation ending time, and the controller controls the indicator lamp to be in a door closing state;
if the inflation interval time is smaller than the set interval threshold value, the controller controls the gas path channel in the inflation valve to be opened and closed circularly, the controller controls the gas path channel in the deflation valve to be closed, and the controller controls the indicator lamp to be in a fault state.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention monitors the pressure of the door sealing strip on line in real time, and the sealing strip pressure is automatically supplemented with air once being lower than a set sealing pressure threshold value;
2. the gas pipeline is bitten by rats and the sealing strip is aged and damaged, so that a damage port is formed, a special air leakage condition is generated, the door sealing strip has the risk of indoor and outdoor communication, the inside of the door sealing strip is simply inflated and purged, so that the pollution and pathogen can be controlled in a limited indoor space, and the damage port is aggravated to be broken after long-time and large-air continuous purging, so that the sealing effect is not facilitated; the invention can supplement air automatically at intervals, not only prevents but also protects temporarily, and can output fault alarm prompt to remind personnel in the equipment pipe to detect and maintain, thereby reducing the potential leakage possibility of the room.
3. The problem that the inflation pressure of the door sealing strip is too low and the inflation sealing force of the door sealing strip is insufficient due to the lack of consideration of the fact that the air source pressure is too low; the invention monitors the air source pressure on line in real time, the air pressure is lower than the set value, the controller of the device outputs a warning prompt, and simultaneously, the air-tight door is limited to be opened and the automatic air-supplementing function is realized, the unnecessary reduction of the pressure of the door sealing strip is avoided, and the device manager can be prompted, thereby being convenient for quick investigation.
Drawings
Fig. 1 is a schematic electrical structure of the present invention.
In the figure: 1-an air source; 2-an inflation valve; 3-a bleed valve; 4-door sealing strips; 5-a door opening button; 6-door closing button; 7-a controller; 8-an air supply monitoring module; 9-a pressure monitoring module; 10-indicator lights.
Detailed Description
The present invention will be further described in detail below in conjunction with the following examples, for the purpose of facilitating understanding and practicing the present invention by those of ordinary skill in the art, it being understood that the examples described herein are for the purpose of illustration and explanation only and are not intended to limit the invention.
The automatic air-supplementing type airtight door comprises a door sealing strip 4 arranged on the periphery of a door leaf of the airtight door, and further comprises an air source 1, an air charging valve 2 and an air discharging valve 3, wherein an air outlet of the air source 1 is connected with one end of an air passage channel in the air charging valve 2, the other end of the air passage channel in the air charging valve 2 is connected with an air charging and discharging port of the door sealing strip 4, one end of the air passage channel in the air discharging valve 3 is connected with the air charging and discharging port of the door sealing strip 4, a second pressure detection module 9 is further arranged at the air charging and discharging port of the door sealing strip 4, a first pressure detection module 8 is arranged at the air outlet of the air source 1, a control end of the air charging valve 2, a control end of the air discharging valve 3, an opening button 5 and a closing button 6 are respectively connected with a controller 7, the controller 7 is further connected with a coil module of an electromagnetic lock arranged on the door frame, and the controller 7 is further connected with a proximity switch arranged on the door frame.
The inflation valve 2 and the deflation valve 3 are both controlled by the controller 7 to open and close the internal gas passage, the inflation valve 2 is controlled by the controller 7 to open the internal gas passage, and when the deflation valve 3 is controlled by the controller 7 to close the internal gas passage, the air source 1 inflates the door sealing strip 4 through the gas passage in the inflation valve 2; the inflation valve 2 is closed by the air passage in the controller 7, and when the deflation valve 3 is opened by the air passage in the controller 7, the door sealing strip 4 leaks air outwards through the air passage in the deflation valve 3.
When the door opening button 5 is pressed, a door opening signal is sent to the controller 7, and when the door closing button 6 is pressed, a door closing signal is sent to the controller 7. The first pressure detection module 8 detects the supply pressure of the air outlet of the air source 1, and the second pressure detection module 9 detects the pressure in the door seal strip 4.
The airtight door control method comprises the following steps:
a door opening step:
step 1.1, pressing a door opening button 5, and sending a door opening signal to a controller 7 by the door opening button 5;
step 1.2, after the controller 7 receives a door opening signal, detecting the air supply pressure of the air outlet of the air source 1 through the first pressure detection module 8 to obtain an air supply pressure signal, and sending the air supply pressure signal to the controller 7 by the first pressure detection module 8;
step 1.3, the controller 7 judges the magnitude of the air supply pressure signal and the set air supply pressure threshold value,
if the air supply pressure signal is greater than or equal to the set air supply pressure threshold value, the air supply is normal, the controller 7 controls the air passage in the air charging valve 2 to be closed, the controller 7 controls the air passage in the air discharging valve 3 to be opened, the air in the door sealing strip 4 is discharged outwards through the air passage in the air discharging valve 3, after the air discharging set time, the controller 7 controls the air passage in the air discharging valve 3 to be closed, the controller 7 controls the coil module of the electromagnetic lock to be powered off, the controller 7 controls the indicator lamp 10 to be in a door opening state (green), and the air sealing door is pulled open manually;
if the air supply pressure signal is smaller than the set air supply pressure threshold value, the air supply is abnormal, the controller 7 controls the air passage in the air charging valve 2 to be closed, the controller 7 controls the air passage in the air discharging valve 3 to be closed, and the controller 7 controls the indicator lamp 10 to be in a fault state (yellow).
Closing a door:
step 2.1, manually closing the door leaf of the airtight door, outputting a contact signal to a controller 7 by a proximity switch, outputting a locking signal to the controller by an electromagnetic lock, forming a door closing signal by the contact signal and the locking signal,
step 2.2, after the controller 7 receives a door closing signal, the controller 7 controls the opening of a gas passage in the inflation valve 2, the controller 7 controls the closing of the gas passage in the deflation valve 3, the gas source 1 inflates the door sealing strip 4 through the gas passage in the inflation valve 2, after the inflation setting time, the controller 7 controls the opening of the gas passage in the inflation valve 2, the controller 7 records the inflation ending time, and the controller 7 controls the indicator lamp 10 to be in a door closing state (red);
step 2.3, monitoring the sealing strip pressure in the door sealing strip 4 in real time through a second pressure detection module 9 to obtain a sealing strip pressure signal, and transmitting the sealing strip pressure signal to the controller 7 through the second pressure detection module 9;
step 2.4, the controller 7 compares the sealing strip pressure signal with a set sealing pressure threshold value:
step 2.5, if the sealing strip pressure signal is greater than or equal to the set sealing pressure threshold value, returning to the step 2.4;
if the sealing strip pressure signal is smaller than the set sealing pressure threshold value, calculating the difference between the current time and the latest inflation ending time to obtain inflation interval time,
if the inflation interval time is greater than or equal to the set interval threshold value, the fact that the door sealing strip 4 is not damaged is indicated, the controller 7 controls the gas passage in the inflation valve 2 to be opened, the controller 7 controls the gas passage in the deflation valve 3 to be closed, the gas source 1 inflates the door sealing strip 4 through the gas passage in the inflation valve 2, after the inflation setting time, the controller 7 controls the gas passage in the inflation valve 2 to be disconnected, the controller 7 records the inflation ending time, and the controller 7 controls the indicator lamp 10 to be in a door closing state (red);
if the inflation interval time is smaller than the set interval threshold value, the door sealing strip 4 is indicated to be damaged, the controller 7 controls the gas path channel in the inflation valve 2 to be opened and closed circularly, namely, closed after the inflation interval time is set, opened again after the inflation interval time is set, and circulated reciprocally, the controller 7 controls the gas path channel in the deflation valve 3 to be closed, and the controller 7 controls the indicator lamp 10 to be in a fault state (white).
In the embodiment, in the cycle of opening and closing of the air passage channel in the air charging valve 2, the opening time is 15-20 s, and the closing time is 2-3 s.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (1)
1. The air-tight door control method comprises the steps that an automatic air-supplementing type air-tight door is utilized, the automatic air-supplementing type air-tight door comprises a door sealing strip (4) arranged on the periphery of a door leaf of the air-tight door, the air-tight door further comprises an air source (1), an air charging valve (2) and an air discharging valve (3), an air outlet of the air source (1) is connected with one end of an air channel in the air charging valve (2), the other end of the air channel in the air charging valve (2) is connected with an air charging and discharging port of the door sealing strip (4), one end of the air channel in the air discharging valve (3) is connected with an air charging and discharging port of the door sealing strip (4), the air outlet of the door sealing strip (4) is further provided with a second pressure detection module (9), a control end of the air charging valve (2), a control end of the air discharging valve (3), an opening button (5) and a closing button (6) are respectively connected with a controller (7), and the controller (7) is further connected with a coil module of an electromagnetic lock arranged on the door frame.
Step 1.1, pressing a door opening button (5), and sending a door opening signal to a controller (7) by the door opening button (5);
after the controller (7) receives the door opening signal, the first pressure detection module (8) detects the air supply pressure of the air outlet of the air source (1) to obtain an air supply pressure signal, and the first pressure detection module (8) sends the air supply pressure signal to the controller (7);
step 1.3, the controller (7) judges the magnitude of the air supply pressure signal and the set air supply pressure threshold value,
if the air supply pressure signal is greater than or equal to a set air supply pressure threshold value, the controller (7) controls the air passage in the air charging valve (2) to be closed, the controller (7) controls the air passage in the air discharging valve (3) to be opened, air in the door sealing strip (4) is discharged outwards through the air passage in the air discharging valve (3), after the air discharging set time, the controller (7) controls the air passage in the air discharging valve (3) to be closed, the controller (7) controls the coil module of the electromagnetic lock to be deenergized, the controller (7) controls the indicator lamp (10) to be in a door opening state, and the air sealing door is pulled open manually;
if the air supply pressure signal is smaller than the set air supply pressure threshold value, the controller (7) controls the air passage in the air charging valve (2) to be closed, the controller (7) controls the air passage in the air discharging valve (3) to be closed, the controller (7) controls the indicator lamp (10) to be in a fault state,
the method also comprises a door closing step, and specifically comprises the following steps:
step 2.1, manually closing the door leaf of the airtight door, outputting a contact signal to a controller (7) by a proximity switch, outputting a locking signal to the controller by an electromagnetic lock, forming a door locking signal by the contact signal and the locking signal,
step 2.2, after the controller (7) receives a door closing signal, the controller (7) controls the opening of a gas passage in the inflation valve (2), the controller (7) controls the closing of the gas passage in the deflation valve (3), the gas source (1) inflates the door sealing strip (4) through the gas passage in the inflation valve (2), after the inflation setting time, the controller (7) controls the opening of the gas passage in the inflation valve (2), the controller (7) records the inflation ending time, and the controller (7) controls the indicator lamp (10) to be in a door closing state;
step 2.3, monitoring the sealing strip pressure in the door sealing strip (4) in real time through a second pressure detection module (9) to obtain a sealing strip pressure signal, wherein the second pressure detection module (9) transmits the sealing strip pressure signal to the controller (7);
step 2.4, the controller (7) compares the sealing strip pressure signal with a set sealing pressure threshold value:
step 2.5, if the sealing strip pressure signal is greater than or equal to the set sealing pressure threshold value, returning to the step 2.4;
if the sealing strip pressure signal is smaller than the set sealing pressure threshold value, calculating the difference between the current time and the latest inflation ending time to obtain inflation interval time,
if the inflation interval time is greater than or equal to a set interval threshold value, the controller (7) controls the opening of the air passage in the inflation valve (2), the controller (7) controls the closing of the air passage in the deflation valve (3), the air source (1) inflates the door sealing strip (4) through the air passage in the inflation valve (2), after the inflation setting time, the controller (7) controls the opening of the air passage in the inflation valve (2), the controller (7) records the inflation ending time, and the controller (7) controls the indicator lamp (10) to be in a door closing state;
if the inflation interval time is smaller than the set interval threshold value, the controller (7) controls the gas path channel in the inflation valve (2) to be opened and closed circularly, the controller (7) controls the gas path channel in the deflation valve (3) to be closed, and the controller (7) controls the indicator lamp (10) to be in a fault state.
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| CN201910325545.2A CN110005949B (en) | 2019-04-22 | 2019-04-22 | Automatic air-supplementing type airtight door and airtight door control method |
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| CN201910325545.2A CN110005949B (en) | 2019-04-22 | 2019-04-22 | Automatic air-supplementing type airtight door and airtight door control method |
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| CN110005949B true CN110005949B (en) | 2023-04-28 |
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| CN110774875A (en) * | 2019-11-01 | 2020-02-11 | 天津捷强动力装备股份有限公司 | High-overpressure type collective protection system |
| CN112081513A (en) * | 2019-12-25 | 2020-12-15 | 上海厚普科技发展有限公司 | Air-tight door control system and control method |
| CN111055965B (en) * | 2019-12-30 | 2021-09-14 | 湖北三江船艇科技有限公司 | Waterborne bus passenger ship |
| CN111927288A (en) * | 2020-08-29 | 2020-11-13 | 河南省安久医疗器械有限公司 | Ethylene oxide sterilization cabinet door seals invariable system of pressure with alarm device |
| CN112647821B (en) * | 2021-02-04 | 2022-10-04 | 泰安仁和屏蔽防护工程有限公司 | Special silence door of no reed nuclear magnetic shielding |
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