CN202328674U - Air supply system for building fire protection - Google Patents
Air supply system for building fire protection Download PDFInfo
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- CN202328674U CN202328674U CN2011204276794U CN201120427679U CN202328674U CN 202328674 U CN202328674 U CN 202328674U CN 2011204276794 U CN2011204276794 U CN 2011204276794U CN 201120427679 U CN201120427679 U CN 201120427679U CN 202328674 U CN202328674 U CN 202328674U
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Abstract
The utility model discloses an air supply system for building fire protection. The air supply system comprises a fire-protection pressurized air supply channel which penetrates through each floor of a building, a pressurized air supply pipe which is connected with the pressurized air supply channel, and a pressurized air feeder which is arranged in the pressurized air supply pipe and connected with a control device, wherein pressurized air supply ports which are used for supplying air to smoke prevention areas are formed on the pressurized air supply channel corresponding to each floor. The air supply system has the improvement that a pressure-releasing air pipe capable of adjusting the air volume is arranged at the upper end of the pressurized air supply channel; and the air supply system can well eliminate potential safety hazards in a smoke prevention pressurized air supply system in the building, and ensure the life security of people.
Description
Technical field
The utility model relates to a kind of supply air system with pressure control device of structural fire protection ventilating system.
Background technology
In recent years, along with increasing of skyscraper, mechanical pressure air blowing system was as smoke proof staircase, cup and to share cup Smoke prevention facility very general.From the theory analysis of gas fume control, for building building, when the breaking out of fire of a certain position; Should take the Smoke prevention measure of mechanical pressure air blowing rapidly to non-fire position and fire escape etc.; Making this position air pressure value is relative malleation, to stop the intrusion of flue gas, the control fire spreading.Therefore; China's existing " Code for fire protection design of high rise buildings " (GB50045-95, version in 2005) has stipulated the vertical fire escape that does not possess the natural draught system condition (between smoke proof staircase and cup thereof, Fire lift cup or share cup) and closed refuge story are adopted the Smoke prevention measure of mechanical pressure air blowing.The following position of " Code for fire protection design of high rise buildings " (GB50045-95, version in 2005) regulation should be provided with the independently Smoke prevention facility of mechanical pressure air blowing: 1. do not possess between the smoke proof staircase, Fire lift of natural draught system condition cup or share cup; 2. adopt the smoke proof staircase of natural draught system measure, it does not possess the cup of natural draught system condition; The sealing refuge story ().Also stipulated to adopt mechanical pressure air blowing Smoke prevention position overbottom pressure value to meet the following requirements simultaneously: 1. smoke proof staircase is 40Pa to 50Pa; Cup, share cup between cup, Fire lift, sealing refuge story () for 25Pa to 30Pa.
It is as shown in Figure 1 that fume-resisting system is built in present domestic employing the most widely.With the cup pressure air blowing is example, and all pressure air blowing mouths are the normally closed pressure air blowing mouth of control far away, confirms the model of forced draught blower through the resistance of the air quantity that calculates and most unfavorable steam supply main.And during actual breaking out of fire, fire location and egress door unlatching situation are not the design the most unfavorable processing condition, can cause two kinds of situation like this: 1. the cup hypertonia makes the egress door of closing be difficult to open influences evacuating personnel; 2. preceding chamber pressure can not satisfy the design load (25～30Pa) of code requirement.No matter which kind of situation all can influence personnel's in the building personal safety when breaking out of fire.
Summary of the invention:
In order to solve the problem that can not adjust blast in the prior art according to actual conditions, the utility model provides a kind of supply air system that is used for structural fire protection.
A kind of supply air system that is used for structural fire protection; Comprise and run through pressure air blowing road, the pressure air blowing pipe that is connected with the pressure air blowing road that the fire-fighting of building each floor uses and be arranged on the forced draught blower in the pressure air blowing pipe; Forced draught blower is connected with control device; Corresponding each floor is provided with the pressure air blowing mouth of in the Smoke prevention zone, blowing on the pressure air blowing road, and improvements are: be provided with the pressure release airduct with adjusting air quantity function in upper end, pressure air blowing road;
As the further improvement of such scheme, the micro-pressure sensor to control device transmission air pressure difference signal is set on each floor;
As the further improvement of such scheme, the Electric air valve that can have the reception signal of telecommunication and continuous adjusting air quantity function is set on the pressure release airduct;
As the further improvement of such scheme, be provided with on the pressure release airduct and can receive the signal of telecommunication and the valve that blows in soon with quick open and close function;
As the further improvement of such scheme, control device is connected with Electric air valve, with the aperture of control Electric air valve; Control device is connected with the valve that blows in soon; To control the open and close of the valve that blows in soon, control device is connected with the micro-pressure sensor of gathering the air pressure difference signal, to form feedback circuit;
As the further improvement of such scheme, control device is for carrying out the Programmable Logic Controller of data acquisition, comparative analysis processing.
The building breaking out of fire and start mechanical pressure air blowing system after, the related building fume-resisting system pressure control device of the utility model can be realized following function:
1. when egress door was closed, cup or staircase pressure raise suddenly, and this device can reduce pressure rapidly with the adjusting Electric air valve through opening the valve that blows in soon, and the assurance personnel get into the safety zone smoothly;
2. when egress door was closed, Programmable Logic Controller satisfied the design pressure value according to the Signal Regulation Electric air valve control Smoke prevention zone of micro-pressure sensor feedback;
3. when egress door opens or closes, guarantee the pressure and the door opening place wind speed designing requirement value in Smoke prevention zone through the open and close of switching the valve that blows in soon.
Description of drawings:
Fig. 1 is the sketch map of original pressure air blowing system.
Fig. 2 is the utility model control device annexation figure.
Fig. 3 is the utility model supply air system overall schematic.
Label among the figure: 1-cup; Egress door between 2-cup and the aisle; 3-pressure air blowing mouth; 4-pressure air blowing road; The 5-forced draught blower; 6-pressure air blowing pipe; 7-pressure release airduct; The 8-valve that blows in soon; The 9-Electric air valve; The 10-Programmable Logic Controller; The 11-micro-pressure sensor.
The specific embodiment:
The pressure control device of building fume-resisting system; Comprise and run through the pressure air blowing road (4) used of each floor fire-fighting of building and the forced draught blower of controlling by control device (5) that is arranged in the pressure air blowing pipe (6); Said each floor correspondence is provided with the pressure air blowing road and is connected and the pressure air blowing mouth (3) that can in the Smoke prevention zone, blow and the micro-pressure sensor (11) that can transmit the air pressure difference signal to Programmable Logic Controller (10), it is characterized in that: on roofing pressure air blowing road (4), be provided with the pressure release airduct (7) with adjusting air quantity function; Said pressure release airduct (7) is gone up to be provided with to have and is received the signal of telecommunication and the Electric air valve (9) of regulating the air quantity function continuously; Said pressure release airduct (7) is gone up to be provided with has the valve that blows in soon (8) that receives the signal of telecommunication and quick open and close function; The circuit of said control device is by the control circuit of control Electric air valve (9) aperture; Control the control circuit of valve (8) open and close of blowing in soon, the control circuit composition of gathering micro-pressure sensor (11) feedback circuit of air pressure difference signal and can carrying out the Programmable Logic Controller (10) of data acquisition, comparative analysis processing.The utility model can be good at eliminating the potential safety hazard that building Smoke prevention pressure air blowing system exists, and ensures people's life security.
The course of work of the utility model: during breaking out of fire, the pressure air blowing mouth that the Field Force is manual or the Smoke prevention of fire protection control center remote opening respective storey is regional, the linkage forced draught blower carries out the pressure air blowing Smoke prevention to the Smoke prevention zone; The micro-pressure sensor (this micro-pressure sensor detect be the Smoke prevention zone and evacuate the pressure reduction between the aisle) that is positioned at the Smoke prevention zone feeds back to Programmable Logic Controller with pressure difference signal; Again through after the plug-in analyzing and processing to Electric air valve and the valve that blows in soon send action command, when pressure reduction should be transferred big Electric air valve aperture when the range limit value is set; Pressure reduction should be turned the Electric air valve aperture down when the scope lower limit is set; Pressure reduction is reduced to 5Pa and is closed the valve that blows in soon when following, when pressure reduction is opened the valve that blows in soon when the range limit value is set again.Control device can be avoided the problem in pressure air blowing initial stage cup hypertonia, the requirement of door opening wind speed when the requirement of cup overbottom pressure and egress door are opened in the time of can also satisfying egress door and close.
The purpose of the utility model is to control the overbottom pressure and the wind speed in building Smoke prevention zone.During breaking out of fire, the pressure air blowing mouth automatic or manual that is positioned at fire layer cup is opened, and the linkage forced draught blower starts.Programmable Logic Controller detects the micro-pressure sensor feedback signal and carries out analyzing and processing through plug-in, sends action command to blow in soon valve and the Electric air valve that are positioned on the pressure release airduct, and Electric air valve is to Programmable Logic Controller feedback aperture signal simultaneously.When the egress door between cup and the aisle is closed and during the cup pressure stability; Electric air valve no longer receives action command; The maintenance of overbottom pressure and wind speed is switched by the open and close of the valve that blows in soon, and the valve that blows in soon when promptly egress door is opened cuts out, and opening of valves soon blows in when egress door is closed.
The pressure control device of building fume-resisting system comprises three parts altogether:
1. harvester
Through being installed on the micro-pressure sensor in each floor Smoke prevention zone, gathering the pressure difference signal (analog quantity) in each Smoke prevention zone and adjacent aisle, and be transferred to Programmable Logic Controller to this signal.
2. controller
Controller is a Programmable Logic Controller, and its analog quantity, digital input and output channel should be complementary with micro-pressure sensor, Electric air valve and the valve signal type of blowing in soon.Controller is through plug-in collection analysis pressure difference signal and Electric air valve feedback signal, and to Electric air valve and the valve that blows in soon send correspondingly action command.
3. actuating unit
Actuating unit mainly contains Electric air valve and the valve that blows in soon.Electric air valve can be realized successive control (analog quantity input) and feedback (analog quantity output); The valve that blows in soon can be realized open and close controls (digital quantity input).
The advantage of the utility model has:
1. eliminated the too conservative potential safety hazard of bringing of mechanical forced draught blower type selecting;
2. can control the overbottom pressure value in the Smoke prevention zone more accurately, improve the Smoke prevention effect of mechanical pressure air blowing system;
3. through the switching of the valve that blows in soon, can satisfy egress door and open and close the Smoke prevention requirement under the two states, really reach the purpose of Smoke prevention;
4. controlling unit is few, and automaticity is high, each parts reliable in action.
Claims (6)
1. supply air system that is used for structural fire protection; Comprise and run through pressure air blowing road (4), the pressure air blowing pipe (6) that is connected with pressure air blowing road (4) that the fire-fighting of building each floor uses and be arranged on the forced draught blower (5) in the pressure air blowing pipe (6); Forced draught blower (5) is connected with control device; Said pressure air blowing road (4) is gone up corresponding each floor and is provided with the pressure air blowing mouth (3) of in the Smoke prevention zone, blowing, and it is characterized in that: be provided with the pressure release airduct (7) with adjusting air quantity function in pressure air blowing road (4) upper end.
2. the supply air system that is used for structural fire protection according to claim 1 is characterized in that: the micro-pressure sensor (11) to control device transmission air pressure difference signal is set on each floor.
3. the supply air system that is used for structural fire protection according to claim 1 is characterized in that: said pressure release airduct (7) is gone up setting can receive the signal of telecommunication and the Electric air valve (9) with continuous adjusting air quantity function.
4. the supply air system that is used for structural fire protection according to claim 1 and 2 is characterized in that: said pressure release airduct (7) is gone up setting can receive the signal of telecommunication and the valve that blows in soon (8) with quick open and close function.
5. according to claim 1, the 2 or 3 described supply air systems that are used for structural fire protection; It is characterized in that: said control device is connected with Electric air valve (9); With the aperture of control Electric air valve (9), control device is connected with the valve that blows in soon (8), to control the open and close of valve (8) of blowing in soon; Control device is connected with the micro-pressure sensor (11) of gathering the air pressure difference signal, to form feedback circuit.
6. the supply air system that is used for structural fire protection according to claim 5 is characterized in that: control device is for carrying out the Programmable Logic Controller (10) of data acquisition, comparative analysis processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204276794U CN202328674U (en) | 2011-11-02 | 2011-11-02 | Air supply system for building fire protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204276794U CN202328674U (en) | 2011-11-02 | 2011-11-02 | Air supply system for building fire protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202328674U true CN202328674U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204276794U Expired - Fee Related CN202328674U (en) | 2011-11-02 | 2011-11-02 | Air supply system for building fire protection |
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| CN (1) | CN202328674U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548461A (en) * | 2015-01-13 | 2015-04-29 | 泉州天梭电气有限公司 | Intelligent pressure difference control system for structural fire protection |
| 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 |
| CN107339771A (en) * | 2017-08-14 | 2017-11-10 | 南京工业大学 | Air exhaust smoke prevention system suitable for positive and negative pressure conversion of high-rise residential building toilet |
| CN107957116A (en) * | 2017-11-15 | 2018-04-24 | 南宁晟景工程咨询有限公司 | A kind of ventilating system applied to building constructions |
| 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 |
| CN113124540A (en) * | 2019-12-31 | 2021-07-16 | 湖南集森节能环保科技有限公司 | Smoke-proof intelligent control system with automatic inspection function |
| CN113536413A (en) * | 2020-06-16 | 2021-10-22 | 广州汉森建筑设计有限公司 | Design method of super high-rise building |
| CN113589852A (en) * | 2021-07-02 | 2021-11-02 | 深圳中广核工程设计有限公司 | Floor smoke prevention control method |
| CN113847669A (en) * | 2021-10-29 | 2021-12-28 | 南京长江都市建筑设计股份有限公司 | Double-fan pressurized air supply system and working method |
| US11339026B2 (en) | 2017-11-28 | 2022-05-24 | Otis Elevator Company | System for processing pressure sensor data |
-
2011
- 2011-11-02 CN CN2011204276794U patent/CN202328674U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548461A (en) * | 2015-01-13 | 2015-04-29 | 泉州天梭电气有限公司 | Intelligent pressure difference control system for structural fire protection |
| 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 |
| CN107339771A (en) * | 2017-08-14 | 2017-11-10 | 南京工业大学 | Air exhaust smoke prevention system suitable for positive and negative pressure conversion of high-rise residential building toilet |
| CN107957116A (en) * | 2017-11-15 | 2018-04-24 | 南宁晟景工程咨询有限公司 | A kind of ventilating system applied to building constructions |
| US11339026B2 (en) | 2017-11-28 | 2022-05-24 | Otis Elevator Company | System for processing pressure sensor data |
| 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 |
| CN113124540A (en) * | 2019-12-31 | 2021-07-16 | 湖南集森节能环保科技有限公司 | Smoke-proof intelligent control system with automatic inspection function |
| CN113536413A (en) * | 2020-06-16 | 2021-10-22 | 广州汉森建筑设计有限公司 | Design method of super high-rise building |
| CN113589852A (en) * | 2021-07-02 | 2021-11-02 | 深圳中广核工程设计有限公司 | Floor smoke prevention control method |
| CN113589852B (en) * | 2021-07-02 | 2024-05-03 | 深圳中广核工程设计有限公司 | Floor smoke prevention control method |
| CN113847669A (en) * | 2021-10-29 | 2021-12-28 | 南京长江都市建筑设计股份有限公司 | Double-fan pressurized air supply system and working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121102 |