CN203244716U - Automatic fire extinguishing system pressure type deflagration detector - Google Patents
Automatic fire extinguishing system pressure type deflagration detector Download PDFInfo
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- CN203244716U CN203244716U CN 201320302103 CN201320302103U CN203244716U CN 203244716 U CN203244716 U CN 203244716U CN 201320302103 CN201320302103 CN 201320302103 CN 201320302103 U CN201320302103 U CN 201320302103U CN 203244716 U CN203244716 U CN 203244716U
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Abstract
The utility model discloses an automatic fire extinguishing system pressure type deflagration detector which is used for an automatic fire extinguishing system of a ship cabin. The automatic fire extinguishing system pressure type deflagration detector is characterized by comprising two sets of detecting channels. Each detecting channel is formed by a pressure measurement assembly, a testing circuit, a rebuilt circuit and a power source. Each pressure measurement assembly comprises a micro-switch. One end of each micro-switch is connected with the positive electrode of each power source. The other end of each micro-switch is connected with an alarm signal port. Each rebuilt circuit comprises an NPN triode. The collector electrode of each NPN triode is connected with the positive electrode of each power source. The emitter electrode of each NPN triode is connected with a common port. The base electrode of each NPN triode is connected with an alarm confirming port. The base electrode of each NPN triode is connected with the emitter electrode of each NPN triode through a resistor and a diode which are connected in parallel. The positive electrode of each diode is connected with the common port. Each testing circuit comprises a relay K1. One end of a coil of each relay K1 is connected with a detecting port of the detector. The other end of the coil of each relay K1 is connected with the common port. The two ends of each micro-switch are connected with the two ends of a normally open contact of each relay K1 respectively. According to the automatic fire extinguishing system pressure type deflagration detector, the two sets of detecting channels are adopted, the reliability is high, and the false alarm can not be caused when faults occur in the automatic fire extinguishing system pressure type deflagration detector.
Description
Technical field:
The utility model is used for the automatic fire extinguishing system in the extraordinary cabin of boats and ships, is specifically related to a kind of automatic fire extinguishing system pressure-type detonation detector.
Background technology:
Fire has the various ways such as smoldering, naked light, detonation, deflagration fire very easily occurs at explosive gas atmosphere and dust atmosphere, pressure-type detonation detector is the important component part of the automatic fire extinguishing system of munitions, ammunition, fuel oil, combustion gas, chemicals related application, being particluarly suitable for relatively airtight place uses, because the particularity of detection principle and detection of fires type, pressure-type detonation detector product is uncommon.The pressure-type detonation detector that can retrieve at present adopts electronic pressure sensor to measure in real time the pressure of test environment mostly, and the atmospheric pressure of this pressure and open environment compared, calculate force value and the rate of pressure rise value of test environment, the air pressure change that this implementation poor reliability, the temperature Change that system architecture is complicated, cost is high and confined space is interior cause causes false alarm easily.
The utility model content:
For overcoming the deficiencies in the prior art, the utility model provides a kind of automatic fire extinguishing system pressure-type detonation detector, it has two identical and separate detection channels each other, after the alarm signal of only having two detection channels all confirms that by the fire of self-extinguishing controller logic is confirmed, just can confirm the generation of deflagration fire event, improve the accuracy of reporting to the police.
The purpose of this utility model is achieved in the following ways: this automatic fire extinguishing system pressure-type detonation detector, the technical scheme that adopts is: comprise two identical detection channels, each passage is by the pressure measxurement assembly, test circuit, reconstruction circuit, power supply and interface circuit consist of, described pressure measxurement assembly comprises microswitch, one end of microswitch is connected with positive source, the other end connects the port of alarm signal, described reconstruction circuit comprises the NPN triode, the colelctor electrode of triode is connected with positive source, emitter stage is connected with common port, base stage is connected with the port of alarming determining, the base stage of triode is connected with emitter stage and is connected with diode by resistance in parallel, the positive pole of diode is connected with common port, described test circuit comprises relay K 1, coil one end of relay K 1 is connected with the port of detector test, the other end is connected with common port, and the two ends of microswitch are connected with the two ends of relay one road normally opened contact respectively.
Preferably, the positive source of described two passages is connected with power port with R6 by resistance R 5 respectively, is connected with D6 by Zener diode D5 respectively between the positive source of two passages and the common port; Described two channel pressures are measured in the assembly and are respectively equipped with microswitch S1 and S2, described two passage reconstruction circuit are respectively equipped with NPN triode VT1 and VT2, the VT1 base stage is connected with the alarming determining port by resistance R 2, the base stage of VT1 and VT2 links to each other, and is in series with resistance R 4 and diode D4 between the port of microswitch S1 and alarm signal; Be in series with resistance R 7 and diode D7 between the port of microswitch S2 and alarm signal, diode D4 is connected negative pole and all is connected with the port of alarm signal with D7, described relay K 1 is with two groups of normally opened contacts, be parallel with diode D1 between the coil of relay K 1 and the common port, the positive pole of diode D1 connects common port.
Preferably, the microswitch of described two passages is located at respectively in the seal casinghousing of detector, the plug of detector by its lower end links to each other with socket on the detector base, be provided with circuit board in the seal casinghousing of detector, the outside of microswitch is provided with fine motion pressure sub-assembly, fine motion pressure sub-assembly comprises support, be fixed with trundle by guide pin bushing on the support, the inner of trundle is provided with vertical touching disc, the outside is provided with vertical thrust disc, microswitch is fixed on the support by base plate, touching disc is in the standing groove of offering at the base plate middle part, and be located at by the microswitch, thrust disc is connected with trundle by the jackscrew that runs through guide pin bushing, thrust disc contacts with the pressure sensing air bag, the outside of pressure sensing air bag is covered with joint, and joint is provided with blow vent, and the lower end of microswitch is provided with pressure spring, one end of pressure spring is fixed on the support, the other end connects adjustment seat, and adjustment seat contacts with touching disc; Be provided with the gas outlet that communicates with the external world in the detector base, the side of detector base is provided with line outlet.
Preferably, the channel end that is in communication with the outside of described gas outlet is provided with filter.
The beneficial effects of the utility model are: this automatic fire extinguishing system pressure-type detonation detector, adopt unique rate of pressure rise measuring principle and fine motion pressure sub-assembly, and realized reliable deflagration fire detection.The utlity model has two identical and separate passages, its internal circuit is simple and practical, can report to the police and export and alarming determining, also can carry out comprehensive self check, exclusive fire affirmation mechanism can guarantee that the utility model inside Shi Buhui that breaks down causes false alarm, its reliability is high, only needing separate unit the utility model product namely to can be the self-extinguishing controller in application provides reliable fire to confirm foundation, and the utility model inside does not contain microcontroller and digital integrated electronic circuit, and is very low to the quality requirements of power supply.Two key elements of alarm door existence of the present utility model consist of, be respectively environmental pressure rising speed thresholding and pressure lift-off value thresholding, said pressure lift-off value is the numerical value that surpasses the pressure rising that records in the situation of speed thresholding in environmental pressure rising speed, because the measuring principle of the utility model uniqueness, if environmental pressure rising speed does not reach the speed thresholding all the time, the pressure lift-off value that records of the utility model will surpass the lift-off value thresholding never so, and environmental pressure rising speed thresholding and pressure lift-off value thresholding have been set up before product export to be finished.The operating ambient temperature that the utility model uses under Exib IICT5 explosive-proof grade is-10 ℃ ~ 85 ℃, the operating ambient temperature that uses under Exib IICT6 explosive-proof grade is-10 ℃ ~ 70 ℃, it is under continuous duty, can receive at any time the detector test signal that automatic Fire extinguisher sends, generation by relay contact simulation deflagration fire realizes comprehensive self check of circuit.
Description of drawings:
Fig. 1 is electrical principle block diagram of the present utility model.
Fig. 2 is circuit theory schematic diagram of the present utility model.
Fig. 3 is that Fig. 3 of the present utility model is external structure schematic diagram of the present utility model.
Fig. 4 is the structural representation of detector of the present utility model.
Fig. 5 is the structural representation of detector base of the present utility model.
Fig. 6 is the vertical cross-sectional of detector base of the present utility model.
Fig. 7 is the combination schematic diagram of microswitch of the present utility model and microswitch sub-assembly.
Fig. 8 is the top view of Fig. 7.
Fig. 9 is the horizontal cross of Fig. 8 of the present utility model.
The specific embodiment:
This automatic fire extinguishing system pressure-type detonation detector, comprise two identical detection channels, each passage is by the pressure measxurement assembly, test circuit, reconstruction circuit, power supply and interface circuit consist of, described pressure measxurement assembly comprises microswitch, one end of microswitch is connected with positive source, the other end connects the port of alarm signal, described reconstruction circuit comprises the NPN triode, the colelctor electrode of triode is connected with positive source, emitter stage is connected with common port, base stage is connected with the port of alarming determining, the base stage of triode is connected with emitter stage and is connected with diode by resistance in parallel, the positive pole of diode is connected with common port, described test circuit comprises relay K 1, coil one end of relay K 1 is connected with the port of detector test, the other end is connected with common port, and the two ends of microswitch are connected with the two ends of relay one road normally opened contact respectively.The positive source of two passages is connected with power port with R6 by resistance R 5 respectively, is connected with D6 by Zener diode D5 respectively between the positive source of two passages and the common port; Described two channel pressures are measured in the assembly and are respectively equipped with microswitch S1 and S2, described two passage reconstruction circuit are respectively equipped with NPN triode VT1 and VT2, the VT1 base stage is connected with the alarming determining port by resistance R 2, the base stage of VT1 and VT2 links to each other, and is in series with resistance R 4 and diode D4 between the port of microswitch S1 and alarm signal; Be in series with resistance R 7 and diode D7 between the port of microswitch S2 and alarm signal, diode D4 is connected negative pole and all is connected with the port of alarm signal with D7, described relay K 1 is with two groups of normally opened contacts, be parallel with diode D1 between the coil of relay K 1 and the common port, the positive pole of diode D1 connects common port.
See figures.1.and.2, in normal operation, test circuit and reconstruction circuit are not worked, the contact of relay K 1 is in open-circuit condition, triode VT1 and VT2 are in by state, when arbitrary passage action (microswitch is closed), this passage will be exported the high level alarm signal, after the self-extinguishing controller receives this alarm signal, can in 0.1S, send high level alarming determining signal to detector, this alarming determining signal will make triode VT1 and the VT2 in the reconstruction circuit connect, and the in-line power of detector will be dragged down, and the alarm signal of the passage of action disappeared before this will cause.Output is that fault (such as line short) by detector self causes if report to the police, and said process will can not cause alarm signal to disappear.The self-extinguishing monitoring control devices disappears to the alarm signal that detector sends, to automatically cancel the alarming determining signal, the internal circuit of detector will reenter normal duty this moment, if alert if still exists, this passage will recover alarm signal output.Afterwards before this 0.1S finishes, if the self-extinguishing monitoring control devices has recovered alarm signal output to detector, the self-extinguishing controller will provide notes the indication of reporting to the police, after this self-extinguishing controller will wait for that another passage of detector sends alarm signal, send alarm signal in case monitor another passage of detector, the self-extinguishing controller will start fire-fighting equipment automatically.Do not recover alarm signal output if monitor yet detector when above-mentioned 0.1S finishes, the self-extinguishing controller will reenter normal monitor state.The self-extinguishing controller is when waiting for that another passage of detector sends alarm signal, if the original alarm signal output of detector disappears (being false owing to cause the condition of reporting to the police), the attention of self-extinguishing controller is reported to the police to indicate and will automatically be cancelled mistake, and the self-extinguishing controller also will reenter normal monitor state.If the self-extinguishing controller is after sending the alarming determining signal, if detector still continues the alarm signal sent because of faults itself, the self-extinguishing controller will be cancelled the alarming determining signal behind the 0.1S so, but the self-extinguishing controller will be assert this detector and have fault, will automatically cut off the power supply of detector after 0.6 second.
With reference to Fig. 3 to Fig. 9, the microswitch of the utility model two passages is located at respectively in the seal casinghousing of detector 1, detector 1 links to each other with socket 11 on the detector base 2 by the plug 10 of its lower end, be provided with circuit board 8 in the seal casinghousing of detector 1, the outside of microswitch 3 is provided with fine motion pressure sub-assembly, fine motion pressure sub-assembly comprises support 5-8, support 5-8 is upper to be fixed with trundle 5-1 by guide pin bushing 5-5, the inner of trundle 5-1 is provided with vertical touching disc 5-2, the outside is provided with vertical thrust disc 5-3, microswitch 3 is fixed on the support 5-8 by base plate 5-9, touching disc 5-3 is in the standing groove of offering at base plate 5-9 middle part, and it is other to be located at microswitch 3, thrust disc 5-3 is connected with trundle 5-1 by the jackscrew 5-4 that runs through guide pin bushing 5--5, thrust disc 5-3 contacts with pressure sensing air bag 4, the outside of pressure sensing air bag 4 is covered with joint 7, joint 7 is provided with blow vent 6, the lower end of microswitch 3 is provided with pressure spring 5-7, the end of pressure spring 5-7 is fixed on the support 5-8, the other end connects adjustment seat 5-6, and adjustment seat 5-6 contacts with touching disc 5-2; Be provided with the gas outlet 9 that communicates with the external world in the detector base 2, the side of detector base 2 is provided with line outlet 12.The channel end that gas outlet 9 is in communication with the outside is provided with filter 13, and the outside of gas outlet 9 is provided with O-ring seal 14.
Pressure sensing air bag 4 adopts rubber to make, and has very strong pliability, long service life.Thrust disc 5-3 can increase the contact area of trundle 5-1 and pressure sensing air bag 4, when surpassing alarm threshold, the pressure differential that touching disc 5-2 is used for experiencing in thrust disc 5-3 both sides touches microswitch 3, can regulate pressure spring 5-7 to the thrust of touching disc 5-2 by the position of adjusting adjustment seat 5-6, the setting of pressure alarm thresholding namely realizes by the position of adjusting adjustment seat 5-6.The utility model uses the normally opened contact of microswitch 3, and when touching disc 5-2 touched microswitch 3, the normally opened contact of microswitch 3 was closed.In left and right sides symmetry two microswitches 3 and two groups of fine motion pressure sub-assemblies have been installed in the seal casinghousing of detector 1, have been respectively applied to two detection channels.When the workplace pressure of monitoring raises, pressure sensor capsule 4 enlarges and passes through the thrust disc 5-3 promotion trundle 5-1 of microswitch sub-assembly, when the inside pressure of pressure sensing air bag 4 during greater than the outside thrust of pressure spring 5-7, trundle 5-1 drives inboard touching disc 5-2 moved and touched normally opened contact from microswitch 3 to microswitch 3, detection channels is connected, when if the normally opened contact of two microswitches 3 is all touched closure by the touching disc 5-3 of microswitch sub-assembly, illustrate that the alarm signal of being sent out is accurate, the self-extinguishing controller will start fire-fighting equipment automatically.
The effect of gas outlet 9 is when environmental pressure slowly changes, the pressure of regulating detector 1 inside makes itself and external pressure balance, when environmental pressure raises fast, gas outlet 9 can limit the speed that detector 1 internal pressure raises, the aperture of gas outlet 9 is less, the speed that detector 1 internal pressure raises is just slower, and environmental pressure rising speed thresholding is just lower.Under the prerequisite in the aperture that does not change gas outlet 7, if environmental pressure rising speed is too slow, because the effect of gas outlet 9, the rate of pressure rise of the utility model inside approaches with outside, therefore, the pressure differential of fine motion pressure sub-assembly both sides is very little, can't reach pressure lift-off value thresholding, therefore can not touch microswitch 3.
When the utility model receives the detector detection signal of self-extinguishing controller transmission, two groups of normally opened contacts of relay K 1 are all with closure, this is equivalent to simulate the action that has produced two fine motion pressure sub-assemblies, and the processing of the real deflagration fire event that will introduce with the front of work schedule of the present utility model is identical afterwards; If the self-extinguishing controller carrying out not receiving alarm signal in the test process to the utility model, or the alarm signal of receiving can't be eliminated then in the alarming determining process and has fault in provable the utility model.
Claims (4)
1. automatic fire extinguishing system pressure-type detonation detector, it is characterized in that: comprise two identical detection channels, each passage is by the pressure measxurement assembly, test circuit, reconstruction circuit, power supply and interface circuit consist of, described pressure measxurement assembly comprises microswitch, one end of microswitch is connected with positive source, the other end connects the port of alarm signal, described reconstruction circuit comprises the NPN triode, the colelctor electrode of triode is connected with positive source, emitter stage is connected with common port, base stage is connected with the port of alarming determining, the base stage of triode is connected with emitter stage and is connected with diode by resistance in parallel, the positive pole of diode is connected with common port, described test circuit comprises relay K 1, coil one end of relay K 1 is connected with the port of detector test, the other end is connected with common port, and the two ends of microswitch are connected with the two ends of relay one road normally opened contact respectively.
2. a kind of automatic fire extinguishing system pressure-type detonation detector as claimed in claim 1, it is characterized in that: the positive source of two passages is connected with power port with R6 by resistance R 5 respectively, is connected with D6 by Zener diode D5 respectively between the positive source of two passages and the common port; Described two channel pressures are measured in the assembly and are respectively equipped with microswitch S1 and S2, described two passage reconstruction circuit are respectively equipped with NPN triode VT1 and VT2, the VT1 base stage is connected with the alarming determining port by resistance R 2, the base stage of VT1 and VT2 links to each other, and is in series with resistance R 4 and diode D4 between the port of microswitch S1 and alarm signal; Be in series with resistance R 7 and diode D7 between the port of microswitch S2 and alarm signal, diode D4 is connected negative pole and all is connected with the port of alarm signal with D7, described relay K 1 is with two groups of normally opened contacts, be parallel with diode D1 between the coil of relay K 1 and the common port, the positive pole of diode D1 connects common port.
3. a kind of automatic fire extinguishing system pressure-type detonation detector as claimed in claim 1, it is characterized in that: the microswitch of two passages is located at respectively in the seal casinghousing of detector, the plug of detector by its lower end links to each other with socket on the detector base, be provided with circuit board in the seal casinghousing of detector, the outside of microswitch is provided with fine motion pressure sub-assembly, fine motion pressure sub-assembly comprises support, be fixed with trundle by guide pin bushing on the support, the inner of trundle is provided with vertical touching disc, the outside is provided with vertical thrust disc, microswitch is fixed on the support by base plate, touching disc is in the standing groove of offering at the base plate middle part, and be located at by the microswitch, thrust disc is connected with trundle by the jackscrew that runs through guide pin bushing, thrust disc contacts with the pressure sensing air bag, the outside of pressure sensing air bag is covered with joint, and joint is provided with blow vent, and the lower end of microswitch is provided with pressure spring, one end of pressure spring is fixed on the support, the other end connects adjustment seat, and adjustment seat contacts with touching disc; Be provided with the gas outlet that communicates with the external world in the detector base, the side of detector base is provided with line outlet.
4. a kind of automatic fire extinguishing system pressure-type detonation detector as claimed in claim 3, it is characterized in that: the channel end that gas outlet is in communication with the outside is provided with filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320302103 CN203244716U (en) | 2013-05-29 | 2013-05-29 | Automatic fire extinguishing system pressure type deflagration detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320302103 CN203244716U (en) | 2013-05-29 | 2013-05-29 | Automatic fire extinguishing system pressure type deflagration detector |
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| CN203244716U true CN203244716U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320302103 Expired - Fee Related CN203244716U (en) | 2013-05-29 | 2013-05-29 | Automatic fire extinguishing system pressure type deflagration detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103252051A (en) * | 2013-05-29 | 2013-08-21 | 中国船舶重工集团公司第七�三研究所 | Pressure-type detonation detector of automatic fire extinguishing system |
| CN108107779A (en) * | 2017-12-15 | 2018-06-01 | 江苏厨安厨房自动灭火设备制造有限公司 | The method for solving kitchen automatic fire extinguishing system false alarm |
-
2013
- 2013-05-29 CN CN 201320302103 patent/CN203244716U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103252051A (en) * | 2013-05-29 | 2013-08-21 | 中国船舶重工集团公司第七�三研究所 | Pressure-type detonation detector of automatic fire extinguishing system |
| CN108107779A (en) * | 2017-12-15 | 2018-06-01 | 江苏厨安厨房自动灭火设备制造有限公司 | The method for solving kitchen automatic fire extinguishing system false alarm |
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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: 20131023 Termination date: 20140529 |