CN108616221B - Fire-fighting fan actuating mechanism - Google Patents
Fire-fighting fan actuating mechanism Download PDFInfo
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- CN108616221B CN108616221B CN201810469692.2A CN201810469692A CN108616221B CN 108616221 B CN108616221 B CN 108616221B CN 201810469692 A CN201810469692 A CN 201810469692A CN 108616221 B CN108616221 B CN 108616221B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/04—Control of fire-fighting equipment with electrically-controlled release
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a fire-fighting fan actuating mechanism, which comprises: the control loop of the strong and weak current conversion box, a first relay in the fire valve actuating mechanism, a second relay in the distribution box and the fire-fighting fan; the strong and weak electricity conversion box is arranged indoors and comprises: the strong and weak current conversion module and the relay in the box; the strong and weak current conversion module comprises a strong current terminal and a weak current terminal, and the strong current terminal is connected with a 220V alternating current power supply in the distribution box; a coil of the relay in the box, a weak current terminal, a normally open contact of the second relay and a normally open contact of the first relay are connected in series to form a first loop; a normally open contact of the relay in the box is connected to a control loop of the fire-fighting fan; a coil of the first relay is electrified after a 24V fire-fighting valve control signal is sent by a fire-fighting system; after the fire-fighting system sends a fire-fighting signal, the coil of the second relay is electrified. The technical problem of 24V DC power supply and 220V alternating current control circuit all be connected with outdoor first relay and cause the electricity of striing easily among the prior art is solved.
Description
Technical Field
The invention relates to the technical field of automatic control, in particular to an actuating mechanism of a fire-fighting fan.
Background
According to statistics, the fire accident has up to 50.8% of death reasons, which are caused by poisoning and suffocation caused by smoke, so the fire-fighting smoke exhaust fan system is particularly important.
Present fire control smoke exhaust fan system, including fire automatic alarm systems such as smoke and temperature sensing in the building, the fire control main control system, the block terminal and the fire prevention valve actuating mechanism of setting in fire control smoke exhaust fan side, wherein be provided with first relay in the fire prevention valve actuating mechanism, the normally open contact of first relay is connected in the 220V AC control circuit of fire control smoke exhaust fan, be provided with the second relay in the block terminal, the normally open contact of second relay, the coil of first relay, the fire prevention valve, fire extinguishing system's 24V DC power supply establishes ties in same return circuit.
When the conflagration accident takes place, at first conflagration automatic alarm system can feed back to the fire extinguishing system in time, then the fire extinguishing system sends fire control signal in order to give electricity to the coil of second relay, make the normally open contact of second relay closed, the return circuit at second relay place switches on, thereby control fire prevention valve is opened, and the 24V DC power supply of fire extinguishing system transmits electricity to the coil of first relay, make the normally open contact of first relay closed, and then make fire control smoke exhaust fan 220V alternating current control circuit switch-on, fire control smoke exhaust fan gets the electricity and starts, just so can discharge the smog in the disaster area of taking place to outside the building, reduce the injury of smog to personnel.
However, in fire prevention valve actuating mechanism, first relay coil is connected with 24V DC power supply, the normally open contact both ends of first relay are connected with the 220V AC control circuit of fire control smoke exhaust fan, and fire prevention valve actuating mechanism sets up roof or periphery at the building, therefore, fire prevention valve actuating mechanism can receive the influence of various weather conditions for a long time, can appear moist, the condition such as rust, cause 220V forceful electric power cluster to 24V DC power supply circuit in easily, thereby lead to 24V DC power supply circuit and fire extinguishing system in the relevant equipment to burn out, can lead to the fire control host computer to burn out so that whole fire extinguishing system paralysis under the serious condition.
Disclosure of Invention
The invention provides a fire-fighting fan executing mechanism, which solves the technical problem that in the prior art, a 24V direct-current power supply and a 220V alternating-current control circuit are connected with an outdoor first relay, so that 220V strong current is easily connected in series to the 24V direct-current power supply circuit.
The invention provides a fire-fighting fan actuating mechanism, which comprises: the control loop of the strong and weak current conversion box, a first relay in the fire valve actuating mechanism, a second relay in the distribution box and the fire-fighting fan;
the strong and weak electricity conversion box is arranged indoors and comprises: the strong and weak current conversion module and the relay in the box;
the strong and weak current conversion module comprises a strong current terminal and a weak current terminal, and the strong current terminal is connected with a 220V alternating current power supply in the distribution box;
the strong and weak current conversion module is used for converting a 220V alternating current voltage signal of the strong current terminal into a 24V direct current voltage signal of the weak current terminal;
the coil of the relay in the box, the weak current terminal, the normally open contact of the second relay and the normally open contact of the first relay are connected in series to form a first loop;
a normally open contact of the relay in the box is connected to a control loop of the fire-fighting fan;
a coil of the first relay is connected in a control circuit of the fire-fighting valve and is powered after a 24V fire-fighting control signal is sent by the fire-fighting system;
and after the fire-fighting system sends a fire-fighting signal, the coil of the second relay is electrified.
Preferably, the first and second electrodes are formed of a metal,
the number of the relays in the box is multiple and the relays are connected to the weak current terminal in parallel;
the relays in the box correspond to the fire fans one by one.
Preferably, the first and second electrodes are formed of a metal,
and an indicator lamp is arranged on the relay in the box and is used for indicating the conduction state of the fire-fighting fan control loop.
Preferably, the first and second electrodes are formed of a metal,
the strong and weak current conversion box is arranged in the distribution box.
Preferably, the first and second electrodes are formed of a metal,
the strong current terminal adopts a quick wiring terminal.
Preferably, the first and second electrodes are formed of a metal,
and two ends of the relay coil in the box are provided with quick wiring terminals.
Preferably, the first and second electrodes are formed of a metal,
and the normally open contact of the relay in the box adopts a quick wiring terminal.
According to the technical scheme, the invention has the following advantages:
according to the invention, the coil of the relay in the box, the weak current terminal, the normally open contact of the second relay in the distribution box and the normally open contact of the first relay in the fire valve actuating mechanism are connected in series to form a first loop, the weak current terminal outputs a 24V direct current voltage signal, and the first relay coil is also supplied with power by the control signal source of the 24V fire valve, so that even if the first relay is affected by various weather conditions to generate the conditions of humidity, rusting and the like, the phenomenon of power crosstalk can not occur, the damage of a fire protection system can not be caused, and the strong and weak current conversion box is arranged indoors, so that the relay in the box is not easy to break down due to the influence of weather; in addition, the strong and weak current conversion box is arranged, the structures of the original fire damper actuating mechanism and the second relay do not need to be modified, and only corresponding connecting lines need to be changed on the original basis, so that the modification cost is low, and the practicability is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic circuit diagram of the operation of a fire fighting fan actuator according to the present invention;
FIG. 2 is another schematic circuit diagram of the operation of a fire fighting fan actuator according to the present invention;
fig. 3 is a schematic structural diagram of a strong and weak current transformer box provided by the present invention.
Detailed Description
The invention provides a fire-fighting fan executing mechanism, which solves the technical problem that in the prior art, a 24V direct-current power supply and a 220V alternating-current control circuit are connected with an outdoor first relay, so that 220V strong current is easily connected in series to the 24V direct-current power supply circuit.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below 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.
Referring to fig. 1, a schematic circuit diagram of an operating mechanism of a fire fan according to the present invention is shown.
Referring to fig. 2, another schematic circuit diagram of an actuator of a fire fighting fan according to the present invention is shown.
Referring to fig. 3, a structural schematic diagram of the strong and weak current transformer box provided by the present invention is shown.
The invention provides an embodiment of a fire fighting fan actuating mechanism, which comprises: the strong and weak current conversion box 100, the first relay 500 in the fire-proof valve actuating mechanism, the second relay 300 in the distribution box and the control loop of the fire-fighting fan 400.
The strong and weak electricity conversion box is arranged indoors and comprises: the strong and weak current conversion module and the relay in the box;
the strong and weak current conversion module 100 includes a strong current terminal and a weak current terminal, and the strong current terminal is connected with a 220V alternating current power supply in the power distribution box.
The strong and weak current conversion module 100 is used for converting a 220V ac voltage signal of a strong current terminal into a 24V dc voltage signal of a weak current terminal.
In order to prevent the series current phenomenon at the first relay 500, the present invention converts the 220V ac voltage signal into the 24V dc voltage signal.
The coil of the in-box relay 200, the weak current terminal, the normally open contact of the second relay 300 in the distribution box and the normally open contact of the first relay 500 in the fire damper actuator are connected in series to form a first loop.
The normally open contact of the in-box relay 200 is connected in the control loop of the fire fighting fan 400.
It can be understood that the control circuit of the fire fighting blower 400 includes a 220V ac power source, the normally open contact of the in-box relay 200 functions as a switch in the control circuit of the fire fighting blower 400, and when the normally open contact of the in-box relay 200 is closed, the control circuit of the fire fighting blower 400 can be turned on.
The coil of the first relay 500 is connected in the control circuit of the fire protection valve and is energized after the fire protection system sends out a 24V fire protection valve control signal.
When the fire fighting system sends a fire fighting signal, the coil of the second relay 300 is energized.
It should be noted that it is within the prior art that the coil of the second relay 300 is powered after the fire-fighting signal is sent out by the system, and the details are not described herein.
In this embodiment, as shown in fig. 3, in a fire protection system after a fire occurs, a fire protection valve control module of a fire protection control host sends a fire protection valve control signal of 24V to a first relay 500, and a coil of the first relay 500 is powered on, so that a normally open contact of the first relay 500 is closed; in addition, the fire fighting system can additionally send a fire fighting signal to the second relay 300, so that the coil of the second relay 300 is electrified, and the normally open contact of the second relay 300 is also closed; thereby make first return circuit switch on, the coil of box internal relay 200 gets electric, and then makes the normally open contact of box internal relay 200 closed, and fire control fan 400's control circuit switches on, and fire control fan 400 works.
It should be noted that the control loop of the fire fighting fan 400 at both ends of the normally open contact of the in-box relay 200 is not shown in fig. 3; in addition, in fig. 3, the connection relationship between the fire fighting fan 400 and the first relay 500 belongs to physical connection, so in practical application, the first relay 500 and the fire fighting fan 400 are physically connected and are arranged on the roof or the periphery of a building; in fig. 3, the first terminal 1 and the second terminal 2 of the first relay 500 are coil terminals, and the third terminal 3 and the fourth terminal 5 are normally open contact terminals.
Because the fire prevention valve control module of fire control host computer sends the fire prevention valve control signal of 24V earlier after, the fire prevention valve can be opened earlier, correspondingly, switches on behind the control circuit of fire control fan 400, so fire control fan 400 just works after the fire prevention valve is opened, satisfies the requirement that fire prevention valve and fire control fan 400 link in the fire extinguishing system in proper order.
In addition, a fusing mechanism exists in the field of fire fighting, namely, when the temperature in the fire fighting fan 400 reaches a certain temperature, the fire valve is automatically fused, so that the first relay 500 is triggered to be disconnected, the fire fighting fan 400 stops working, and the fire spread is avoided; in the invention, when the fire damper is automatically fused to cause the first relay 500 to be disconnected, the normally open contact of the relay 200 in the box is opened due to power loss, so that the fire-fighting fan 400 stops working, and therefore, the strong and weak current conversion box enables the fire-fighting fan 400 to be controlled by a fusing mechanism.
According to the invention, strong and weak current separation is completed in the strong and weak current conversion box, and the coil and the normally open contact of the first relay 500 are both powered by 24V direct current voltage, so that no electricity crosstalk phenomenon occurs even if the first relay 500 is easily influenced by weather; on the basis, the first relay 500 is originally arranged in the fire damper actuating mechanism, and the second relay 300 is originally arranged in the distribution box, so that the original device does not need to be changed, and the transformation cost is low.
Further, the number of the in-box relays 200 is plural and is connected in parallel to the weak current terminal; the in-box relays 200 correspond to the fire fans 400 one to one.
It is understood that one in-box relay 200 is used to control one fire fighting fan 400, thereby realizing that one strong and weak current switching box controls a plurality of fire fighting fans 400.
Further, an indicator light is arranged on the in-box relay 200 and used for indicating the conduction state of the control loop of the fire fan 400.
It can be understood that the strong and weak current conversion box is arranged indoors, and the fire fan 400 is arranged outdoors, so that an indicator light is needed to indicate the conduction state of the control loop of the fire fan 400, and the working state of the fire fan 400 can be timely obtained indoors.
Further, the strong and weak electricity of fire control fan 400 actuating mechanism conversion box sets up in the block terminal.
It can be understood that the strong and weak current conversion box is arranged indoors, so that the influence of weather on the relay 200 in the box can be greatly reduced; if with strong and weak current conversion box setting in the block terminal, not only can reduce the influence of weather to relay 200 in the box, can also reduce the cable wire between strong and weak current conversion box and the block terminal, compare in current technical scheme, need not newly-increased any cable wire, saved the cost greatly and reformed transform the facility.
Further, the strong electric terminal may employ a quick connection terminal.
Further, both ends of the coil of the in-box relay 200 may adopt quick connection terminals.
Further, the normally open contact of the in-box relay 200 may employ a quick connection terminal.
It can be understood that the strong current terminal in the strong and weak current conversion box, the two ends of the coil of the relay 200 in the box and the normally open contact of the relay 200 in the box adopt fast wiring terminals, so that the wiring and the disassembly are convenient.
For example, in practical application, require on the fire control to carry out the periodic overhaul to corresponding equipment, consequently when examining the inside trouble that breaks down of strong and weak electricity conversion box, need change corresponding components and parts, for example change relay 200 in the box, so quick binding post's setting makes things convenient for staff's maintenance undoubtedly.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a fire control fan actuating mechanism which characterized in that includes: the control loop of the strong and weak current conversion box, a first relay in the fire valve actuating mechanism, a second relay in the distribution box and the fire-fighting fan;
the strong and weak electricity conversion box is arranged indoors and comprises: the strong and weak current conversion module and the relay in the box;
the strong and weak current conversion module comprises a strong current terminal and a weak current terminal, and the strong current terminal is connected with a 220V alternating current power supply in the distribution box;
the strong and weak current conversion module is used for converting a 220V alternating current voltage signal of the strong current terminal into a 24V direct current voltage signal of the weak current terminal;
the coil of the relay in the box, the weak current terminal, the normally open contact of the second relay and the normally open contact of the first relay are connected in series to form a first loop;
a normally open contact of the relay in the box is connected to a control loop of the fire-fighting fan;
a coil of the first relay is connected in a control circuit of the fire-fighting valve and is powered after a 24V fire-fighting control signal is sent by the fire-fighting system;
and after the fire-fighting system sends a fire-fighting signal, the coil of the second relay is electrified.
2. The fire fighting fan actuator of claim 1, wherein the number of relays in the box is plural and connected in parallel to the weak current terminal;
the relays in the box correspond to the fire fans one by one.
3. The fire fighting fan actuator of claim 1, wherein an indicator light is provided on the relay in the box for indicating the on-state of the fire fighting fan control loop.
4. A fire fan actuator as defined in claim 1, wherein the fire fan actuator high and low current transfer box is disposed within the electrical box.
5. The fire fighting fan actuator of claim 1, wherein the high voltage terminals are quick connect terminals.
6. The fire fighting fan actuator of claim 1, wherein quick terminals are used at both ends of the coil of the relay in the box.
7. The fire fighting fan actuator of claim 1, wherein the normally open contacts of the in-box relay are quick terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810469692.2A CN108616221B (en) | 2018-05-16 | 2018-05-16 | Fire-fighting fan actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810469692.2A CN108616221B (en) | 2018-05-16 | 2018-05-16 | Fire-fighting fan actuating mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108616221A CN108616221A (en) | 2018-10-02 |
| CN108616221B true CN108616221B (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810469692.2A Active CN108616221B (en) | 2018-05-16 | 2018-05-16 | Fire-fighting fan actuating mechanism |
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| CN (1) | CN108616221B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109826820B (en) * | 2019-02-28 | 2021-04-06 | 中国能源建设集团广东省电力设计研究院有限公司 | Smoke exhaust fan control circuit and smoke exhaust control system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090253364A1 (en) * | 2008-04-07 | 2009-10-08 | Mark Henry | Rechargeable fire containment and smoke extraction system |
| CN102049112B (en) * | 2009-11-11 | 2012-06-27 | ***通信集团河南有限公司 | Fire-fighting linkage system and equipment applied to communication machine room |
| CN203308757U (en) * | 2013-06-14 | 2013-11-27 | 佛山市小鹰电气有限公司 | Fire protection fan control circuit |
| CN204193377U (en) * | 2014-11-05 | 2015-03-11 | 杨新军 | The expansion module of automatic fire alarm system |
| US9861846B2 (en) * | 2015-01-22 | 2018-01-09 | Kidde Technologies, Inc. | Spring-collet mechanism for activating a fire extinguisher |
| CN104895822B (en) * | 2015-07-06 | 2017-03-08 | 国家电网公司 | A kind of cigarette sense linkage fan control chamber |
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| CN108616221A (en) | 2018-10-02 |
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