CN105240983A - Positive pressure air supply system and control method - Google Patents
Positive pressure air supply system and control method Download PDFInfo
- Publication number
- CN105240983A CN105240983A CN201510769927.6A CN201510769927A CN105240983A CN 105240983 A CN105240983 A CN 105240983A CN 201510769927 A CN201510769927 A CN 201510769927A CN 105240983 A CN105240983 A CN 105240983A
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- China
- Prior art keywords
- pressure
- control unit
- intelligent control
- forced draft
- staircase
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
- A62C35/64—Pipe-line systems pressurised
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a positive pressure air supply system and a control method. The system comprises a positive pressure air supplying machine, an intelligent control unit and n air supply units of the same structure. The method comprises the steps that the elevator front chamber pressure and the staircase pressure are set through the intelligent control unit; during pressurization air supply, the air pressure of a staircase is larger than the air pressure of the elevator front chamber, and the air pressure of the elevator front chamber is larger than the air pressure of an aisle; when a fire control signal exists, a positive pressure air supply machine is controlled to work, the difference value between a detection pressure numerical value of a staircase pressure sensor and the barometric pressure is obtained through the intelligent control unit, and the maximum value of the difference value is taken as a reference signal to be compared with the staircase pressure set value, so that the opening degree of an electric bypass pressure-relief valve is adjusted to enable the actually-detected staircase pressure value to approach to the set value; and when the fire control signal is eliminated, the intelligent control unit controls the positive pressure air supplying machine to stop working. The system is in communication connection with a building or other control systems, and detection and control are convenient.
Description
Technical field
The present invention relates to a kind of forced draft system and control method, belong to the technical field of building air-supply.
Background technology
Force feed wind system is primarily of being arranged on the forced draft machine on roof or roof, local and being located at every layer of (also can interlayer arrange) smoke proof staircase, the forced draft valve of fire-fighting cup and electrical interlocks control device composition thereof, add building air-supply vertical shaft, constitute a complete building fume-resisting system.
When certain layer catches fire, open the forced draft valve of fire bed and adjacent levels, then start corresponding forced draft machine, form malleation at smoke proof staircase, fire-fighting cup, stop flue gas to enter, for the use of crowd's safe escape.
Therefore need to carry out conservative control to the positive pressure system of stair and elevator cup.
Existing most of malleation air-blower control is by operating personnel's rule of thumb Non-follow control or carry out adjustment pressure by relief valve.Easily there is the larger situation of error in Non-follow control, and relief valve Long-Time Service agingly can get rusty and do not reach the precise requirements of working control.
Summary of the invention
The problem that the present invention solves is to provide a kind of forced draft system and control method.
The present invention seeks to be achieved through the following technical solutions:
A kind of forced draft system, comprise the blowing unit that forced draft machine, an intelligent control unit and n structure is identical, air supply duct wherein between forced draft machine and positively press well is arranged forced draft valve, described blowing unit comprises sensor assembly and wind pushing mechanism, forced draft machine is connected with the air blowing control mouth of intelligent control unit by distribution board, forced draft valve controls mouth with the air-valve of intelligent control unit and is connected, sensor assembly is connected with the signals collecting mouth of intelligent control unit, n be greater than 1 natural number.
Described sensor assembly comprises pressure sensor and pressure difference switch.
Described intelligent control unit is connected with fire-fighting system.
Described intelligent control unit is also arranged electronic bypass relief valve.
A kind of control method of forced draft system is as follows: arrange chamber pressure, staircase pressure before elevator by intelligent control unit; When pressure air blowing, the air pressure of staircase is greater than the air pressure of elevator cup, and the air pressure of elevator cup is greater than the air pressure in aisle;
When having fire-fighting signal and fire occurs, the work of forced draft machine is controlled by intelligent control unit, the difference of staircase pressure sensor detected pressures numerical value and atmospheric pressure is obtained by intelligent control unit, and to get difference maximum be that reference signal compares with staircase pressure settings, electronic bypass relief valve aperture is regulated to make actual detection staircase force value convergence settings; When fire-fighting signal cancellation, control forced draft machine by intelligent control unit and quit work.
When described fire occurs, obtained the difference of staircase pressure sensor detected pressures numerical value and atmospheric pressure by intelligent control unit, when difference is lower than the cup force value arranged, close electronic bypass relief valve by intelligent control unit.
Compared with existing control technology, the present invention has control effects useful as follows:
At stair or cup, the present invention is by arranging that pressure sensor accurately can measure cup or stair force value, and computing can be compared according to the force value of force value and setting and regulate by-passing valve, the pressure requirements of air quantity and fire can be met, not easily cause fire hazard aerosol fog to invade stair, escape when affecting fire.Native system can carry out communication with building or other control system and be connected, and facilitates Detection & Controling.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with concrete example, the present invention is described in further detail, and described is explanation of the invention instead of restriction.
As shown in Figure 1, a kind of forced draft system of the present invention, comprise forced draft machine 1, the blowing unit that intelligent control unit 6 is identical with n structure, ajutage 10 road wherein between forced draft machine 1 and positively press well 2 arranges forced draft valve 12, described blowing unit comprises sensor assembly and wind pushing mechanism 4, forced draft machine is connected with the air blowing control mouth of intelligent control unit 6 by distribution board 3, forced draft valve 12 controls mouth with the air-valve of intelligent control unit 6 and is connected, sensor assembly is connected with the signals collecting mouth of intelligent control unit, n be greater than 1 natural number.
Described sensor assembly comprises pressure sensor 5 and pressure difference switch.
Described intelligent control unit is connected with fire-fighting system 9.
Described intelligent control unit is also arranged electronic bypass relief valve.
The control method of forced draft system is as follows: the every cover system of elevator cup establishes a pressure sensor, keeps pressure 20--25PA, staircase 45-50PA when there being fire-fighting signal.When under the condition that the door of the pressurized portion that communicates is closed, its value should be enough to stop the flue gas of fire bed to enter staircase, cup or closed refuge story under the strength synergy such as hot pressing, blast, floating pressure.Flow to aisle to impel the forced air in smoke proof staircase, play the repulsive interaction facing to fire bed flue gas, therefore require that the air pressure of the smoke proof staircase when pressure air blowing is greater than the air pressure of cup, and the air pressure of cup is greater than the air pressure in aisle.
Staircase positive pressure control system arranges 2 sensors by every cover system, control system and fire-fighting system is chain has judged whether that fire occurs.Fire generation time-histories sort run, checkout gear is in the difference of staircase pressure sensor numerical value and atmospheric pressure, and to get difference maximum be that reference signal compares with settings 50PA, carry out adjustment computing, regulate forced draft valve 12 aperture to make actual detected value convergence settings.When fire-fighting signal cancellation, system reset.
Cup positive pressure control system is by judging whether fire with fire-fighting system is chain, occur when there being fire, system program runs, detect its system lower pressure sensor pressure value and atmospheric pressure difference, 2 or 3 pressure differences are had more than 40PA when control system monitors floor pressure, control system start by with 25PA be set compare, regulate forced draft valve 12 aperture, make its pressure convergence settings.Simultaneity factor Real-Time Monitoring exceeds standard force value, and arbitrary force value that exceeds standard then stops regulating lower than 20PA control system and closes forced draft valve 12.When fan operation signal cancellation, system stalls resets.
All the sensors of the present invention adopts RVVP4*1.0 shielding line, and forced draft valve 12 is from switch board to valve cloth RVV5*1.0 shielding line.All parameters input energy control unit 6 by man-machine interface 8, can also arrange emergency stop switch 11 and electric energy meter 7 by control unit 6.
Claims (6)
1. a forced draft system, it is characterized in that comprising the identical blowing unit of forced draft machine, an intelligent control unit and n structure, air supply duct wherein between forced draft machine and positively press well is arranged forced draft valve, described blowing unit comprises sensor assembly and wind pushing mechanism, forced draft machine is connected with the air blowing control mouth of intelligent control unit by distribution board, forced draft valve controls mouth with the air-valve of intelligent control unit and is connected, sensor assembly is connected with the signals collecting mouth of intelligent control unit, n be greater than 1 natural number.
2. a kind of forced draft system according to claim 1, is characterized in that described sensor assembly comprises pressure sensor and pressure difference switch.
3. a kind of forced draft system according to claim 1, is characterized in that described intelligent control unit is connected with fire-fighting system.
4. a kind of forced draft system according to claim 1 or 3, is characterized in that described intelligent control unit also being arranged electronic bypass relief valve.
5. based on a control method for forced draft system according to claim 1, it is characterized in that described method is as follows: chamber pressure, staircase pressure before elevator are set by intelligent control unit; When pressure air blowing, the air pressure of staircase is greater than the air pressure of elevator cup, and the air pressure of elevator cup is greater than the air pressure in aisle;
When having fire-fighting signal and fire occurs, the work of forced draft machine is controlled by intelligent control unit, the difference of staircase pressure sensor detected pressures numerical value and atmospheric pressure is obtained by intelligent control unit, and to get difference maximum be that reference signal compares with staircase pressure settings, electronic bypass relief valve aperture is regulated to make actual detection staircase force value convergence settings; When fire-fighting signal cancellation, control forced draft machine by intelligent control unit and quit work.
6. the control method of forced draft system according to claim 1, when it is characterized in that described fire occurs, the difference of staircase pressure sensor detected pressures numerical value and atmospheric pressure is obtained by intelligent control unit, when difference is lower than the cup force value arranged, close electronic bypass relief valve by intelligent control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769927.6A CN105240983A (en) | 2015-11-09 | 2015-11-09 | Positive pressure air supply system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769927.6A CN105240983A (en) | 2015-11-09 | 2015-11-09 | Positive pressure air supply system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105240983A true CN105240983A (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510769927.6A Pending CN105240983A (en) | 2015-11-09 | 2015-11-09 | Positive pressure air supply system and control method |
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| CN (1) | CN105240983A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196403A (en) * | 2016-07-05 | 2016-12-07 | 北京中消伟业安全技术工程有限公司 | Fire-fighting ventilation and exhaust device |
| CN106196400A (en) * | 2016-08-19 | 2016-12-07 | 中国科学技术大学 | A kind of skyscraper stairwell pressurization air-supply gear cigarette method and system |
| CN107102656A (en) * | 2017-04-28 | 2017-08-29 | 佛山众传感仪器有限公司 | Differential pressure controller, the apparatus and system of belt switch amount output |
| CN108572673A (en) * | 2018-07-13 | 2018-09-25 | 青岛蓝锐电子科技有限公司 | A kind of pressure difference TT＆C system with analog output |
| CN109839878A (en) * | 2019-03-04 | 2019-06-04 | 江苏荣夏安全科技有限公司 | Fire-fighting emergent evacuates overbottom pressure monitoring method and system |
| CN113175742A (en) * | 2021-03-19 | 2021-07-27 | 广州珠江外资建筑设计院有限公司 | Residual pressure control equipment, system and method |
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| CN101718458A (en) * | 2009-11-19 | 2010-06-02 | 高香顺 | Fume-resisting system |
| GB2477025A (en) * | 2010-01-13 | 2011-07-20 | Fire Engineering Associates Ltd | Smoke suppression system |
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2015
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| DE202004016229U1 (en) * | 2004-10-19 | 2005-01-05 | Leithner, Hans Joachim | Overpressure of air generator e.g. for emergency and escape stair cases, has blower, with mechanism for maintaining given excess air pressure in escape stairway |
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| GB2477025A (en) * | 2010-01-13 | 2011-07-20 | Fire Engineering Associates Ltd | Smoke suppression system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196403A (en) * | 2016-07-05 | 2016-12-07 | 北京中消伟业安全技术工程有限公司 | Fire-fighting ventilation and exhaust device |
| CN106196400A (en) * | 2016-08-19 | 2016-12-07 | 中国科学技术大学 | A kind of skyscraper stairwell pressurization air-supply gear cigarette method and system |
| CN107102656A (en) * | 2017-04-28 | 2017-08-29 | 佛山众传感仪器有限公司 | Differential pressure controller, the apparatus and system of belt switch amount output |
| CN108572673A (en) * | 2018-07-13 | 2018-09-25 | 青岛蓝锐电子科技有限公司 | A kind of pressure difference TT＆C system with analog output |
| CN109839878A (en) * | 2019-03-04 | 2019-06-04 | 江苏荣夏安全科技有限公司 | Fire-fighting emergent evacuates overbottom pressure monitoring method and system |
| CN113175742A (en) * | 2021-03-19 | 2021-07-27 | 广州珠江外资建筑设计院有限公司 | Residual pressure control equipment, system and method |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |