CN102054325B - Method for enabling smoke detection and alarm system to be used in phosphine environment - Google Patents
Method for enabling smoke detection and alarm system to be used in phosphine environment Download PDFInfo
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- CN102054325B CN102054325B CN2009102363973A CN200910236397A CN102054325B CN 102054325 B CN102054325 B CN 102054325B CN 2009102363973 A CN2009102363973 A CN 2009102363973A CN 200910236397 A CN200910236397 A CN 200910236397A CN 102054325 B CN102054325 B CN 102054325B
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Abstract
The invention discloses a method for enabling a smoke detection and alarm system to be used in a phosphine environment, namely, a method for thoroughly eliminating the possibility that PH3 corrodes metal parts of a smoke detection and alarm system by adopting four protective screens. The method comprises the following steps: (1) adopting an air-sampling high-sensitivity smoke detection and alarm system which can be arranged away from a phosphine scene; (2) feeding only 5 percent of air samples into a detection cavity, and directly discharging the residual 95 percent of air samples; (3) coating the metal parts of the smoke detection and alarm system with epoxy resins; and (4) carrying out catalytic oxidation absorption and separation on the metal parts in a negative-pressure reaction separator by using Pd (II)-Fe (III) liquid-phase catalytic oxidizing agent or efficient calcium-hypochlorite bleach solution. The method provided by the invention has the advantages of high reliability, simple process and equipment, cheap and easily-obtained catalytic agent and absorbent, high absorption efficiency and capability of improving the smoke detection performance, and is convenient to operate, therefore, the method can be widely applied to fire detection alarms in a strong corrosive phosphine environment.
Description
Technical field
The present invention relates to make the smoke detection warning system containing the method that metal objects such as copper is had the medium-term and long-term normal operation of phosphine gas environment of strong corrosion effect.Relate in particular to phosphine gas that the aluminum phosphide fumigation desinsection produces and metal objects such as the circuit board of fire-fighting detection alarm equipment, electronic component are had the solution of strong corrosion effect.
At present deposit warehouse, medicinal material and deposit warehouse and grain and deposit the disinsection method in warehouse etc. and all be to use aluminum phosphide tablet, conveniently be widely used always because of insecticide efficiency is high, economical at tobacco leaf.Aluminum phosphate runs into airborne water after throwing in; Can decompose to produce has severe toxicity and has pair metal object that the phosphine gas of strong corrosion effect is arranged; Every gram aluminum phosphide tablet can produce about 1 gram phosphine gas, and every liter contains 0.01 milligram of hydrogen phosphide in air, just insect is had lethal effect; Thereby play the purpose of desinsection; Yet because the hydrogen phosphide that desinsection produces remains in the air, its severe corrosive to metal object makes the fire-fighting detecting and warning system normally to use in this place, otherwise the metal objects such as circuit board Copper Foil, electronic component, power lead and signal wire of fire-fighting detecting and warning system will be eroded by hydrogen phosphide soon and can not work.Because the quick-fried point pole of aluminum phosphate is low, it is prone to blast when decomposing rapidly again, and phosphorus also is easy to nature and causes fire to take place, and in the environment of this high fire hazard, more needs the fire-fighting detecting and warning system of high sensitivity and high reliability! At present all fire-fighting detecting and warning systems all since the metal parts of self be subject to the hydrogen phosphide corrosion and can not use in this place, therefore to people's life and composition of estate extremely serious threat!
Background technology
Smoke detection warning system patent in the hydrogen phosphide environment, using is very few; As everyone knows; The fire-fighting detecting alarm that in aluminum phosphide fumigation desinsection environment, uses reluctantly at present is to transmit and receive the infrared correlation smoke detector that device adds cloche, and this is a kind of because of the limited and helpless selection of Detection Techniques level, and this method and the detector itself that adds cloche has following shortcoming: 1, the sensitivity of infrared correlation smoke detector itself is very low; Be not suitable for using at the environment of this high fire hazard; After adding cloche, because glass is to ultrared decay, refraction, reflection and scattering process, it is lower that its sensitivity will become; 2, must have no occluder on the reception of infrared beam smoke detectors and the beam axis between the transmitter.Can report by mistake because human or animal's primings such as the moth in the buildings, mosquito cause blocks when the detector installation site is low; When the installation site is high,, and can not survey the fire in the stage of glowing in early days because the cigarette in the stage of glowing has arrived not higher height.Because the article in all warehouses all will constantly pass in and out operation, thus when the people moves with thing, can block IR, thus cause that detector reports by mistake; 3, because this detector adopts is the correlation mode; The span that transmits and receives between the head is very big, so though its installation is simple, condition is harsh; On wood, steel and wall, all can cause beam deviation, cause wrong report because of temperature, humidity or other external force effects.4, the dust that produces in the freight handling process etc. also can cause wrong report, is exactly the environment of many dusts originally in the raw material silos such as tobacco leaf warehouse and MED DEP, also can produce the PH3 mist of similar steam during fumigant insect killing.5, high when the relative humidity in the warehouse, also can tie the mist phenomenon when temperature variation is fast, fog accumulates on the camera lens or blocks light beam, also can cause wrong report or fault.6, the irradiation of sunshine and halogen light also can cause wrong report or fault.7, because the corrosivity and the penetrability of hydrogen phosphide are too strong; Facts have proved cm thick more than 60 mixed earth it can both permeate away; And need could disappear for a long time, so the time is a little long, the infrared correlative detector that is placed in the cloche is not escaped the result who is corroded equally.
Summary of the invention
The objective of the invention is to seek a kind of suitable method; Can overcome above-mentioned shortcoming; The metal parts of smoke detection warning system can be corroded in containing the environment of phosphine gas; Can normally carry out smoke detection for a long time and report to the police, fundamentally to solve the out of use difficult problem of fire-fighting detecting alarm in the phosphine-containing gas environment.
Design of the present invention is such:
1, probe into a kind ofly can on-the-spot install away from the aluminum phosphide fumigation desinsection, the highly sensitive and fire-fighting detecting and warning system in the warehouse, do not reported by mistake.
2, two kinds of physical methods of screening carry out multiple-anticorrosion erosion protection to the metal parts of smoke detection alarm.
3, screening hydrogen phosphide good absorbing effect that fumigant insect killing is produced, be prone to purchase, the agent of catalysis appearance and the absorbing agent of cheap and suitable air sampling formula (inhaling or bleeder) high sensitivity smoke detection warning system.
4, probe into the Reaction Separation process equipment of simple in structure, easy to operate and suitable air sampling formula high sensitivity smoke detection warning system.
According to above-mentioned design, realize that the technical scheme of the object of the invention is following:
1, adopt air sampling formula (inhaling or bleeder) high sensitivity smoke detection warning system, experiment and all traditional smoke detectors of all verified its remolding sensitivity of practice will exceed more than 1500 times, and it can perceive the also invisible cigarette of human eye.This kind equipment mainly is made up of detection alarm machine and PVC/UPVC sampling pipe network, and efficient aspiration pump, pneumatic sensor, laser (or high-energy LED light) detection cavity, data processing alarm board etc. are arranged in the detection alarm machine.System is under the effect of efficient aspiration pump; Through stretching to by the pipe network of protected location extracting air sample continuously, gas appearance is at first passed through filtrator, and dust is filtered; Get into laser (or high-energy LED light) detection cavity then; Laser (or high-energy LED light) transmitter and scattered light receiver are installed on the certain location in detection cavity, and the light beam irradiates that send in laser (or high-energy LED light) source is to air sample, if there is smoke particle to exist; Light beam will produce scattering, and laser (or high-energy LED light) receiver is accepted the light signal of scattering.Change according to the power that records scattered light, measure the smoke particle amount in the air sample.The signal of measuring compares with predefined alarm threshold value, as reaches a certain alarm threshold value after software processes, then on display, provides corresponding alerting signal.In with the environment of aluminum phosphide fumigation desinsection, use air sampling formula (inhaling or bleeder) high sensitivity smoke detection warning system that following advantage is arranged: the installation that can keep the scene intact away from the quilt of aluminum phosphide fumigation desinsection of (1) air sampling formula high sensitivity smoke detection warning machine; And the same with heritage smoke detectors such as point type smoke detectors unlike infrared correlation smoke detector, must be installed in is kept the scene intact just can detect smog.As long as it will be not can be by the PVC/UPVC stopple coupon of hydrogen phosphide corrosion, it is just passable to reach protected aluminum phosphide fumigation desinsection scene, machine itself can be away from source of corrosion.Its power lead and signal wire etc. also all need not be pacified the inflammable and explosive aluminum phosphide fumigation desinsection scene that forwards to; So this air sampling formula smoke detection mode away from the scene can significantly reduce the corrosion of hydrogen phosphide to the metal parts of detection alarm equipment mainboard and shell etc.; Simultaneously owing to being " passive detection ", so can avoid " electric fire "; The simultaneously this detection alarm mode of leaning on the built-in aspiration pump of machine initiatively to take air sample in the protected area; Can produce negative pressure; Help realizing that elder generation carries out chemical treatment with the air sample of phosphine containing in the protected area; Behind the PH3 in the mixing air in minimizing or the removal stopple coupon; Let the mixing air that contains smoke particle get into air sampling formula high sensitivity smoke detection warning machine again, so the PH3 in the stopple coupon has not corroded with regard to not causing the metal parts such as pneumatic sensor plate, aspiration pump and detection cavity of air sampling formula high sensitivity smoke detection warning system.
2, the air flow path mode of air sampling formula high sensitivity smoke detection warning system is transformed.Only let 5% of mixing air sample enter in the detection cavity of air sampling formula high sensitivity smoke detection warning machine; Remaining 95% mixing air sample directly is discharged to from air sampling formula high sensitivity smoke detection warning machine place far away through gas outlet from aspiration pump; The PH3 that so just can further reduce in the stopple coupon or maybe be also remaining in the outside air forms the protection of second road to the possibility that metal parts such as the main circuit board of precision detection machine, housing corrode.
3, with the circuit board of air sampling formula high sensitivity smoke detection warning system, electronic devices and components, shell etc. all metal parts use highdensity epoxy coating; Form the protection of the 3rd road, to reduce in the stopple coupon or possibly go back remaining PH3 the precision detection machine is corroded in the outside air.
4, PH3 that the efficient aspiration pump that utilizes air sampling formula high sensitivity smoke detection warning system produces fumigant insect killing and smoke particle mixing air initiatively are extracted in the suction type Reaction Separation device of built-in liquid phase catalytic oxidation agent (also can) and absorbing agent; Through the composition of catalytic oxidation chemical reaction, with the corrosion of the PH3 in the minimizing stopple coupon to the precision detection machine with the PH3 in reduction or the removal mixing air.Form the protection of the 4th road.Reacted smog mixing air separates with absorbing agent with catalytic oxidant (also can) under the suction function of suction type Reaction Separation device automatically; Stopple coupon along air sampling formula high sensitivity smoke detection warning system enters into aspiration pump; In the 5% entering detection cavity wherein; The smog assay that carries out in the smog mixing air with calculating is judged see in the protected fumigant insect killing environment whether disaster hidden-trouble is arranged.
Said catalyzer is Pd (II)-Fe (III) liquid phase catalytic oxidation agent (also can), and said absorbing agent is the calcium hypochlorite higher bleaching powder WS, and its effective chlorinty is more than 60%, is granular, buys easily.
Said suction type Reaction Separation device; What use is suction type " water pipe " principle; Smog and air can pass through the WS of Pd (II)-Fe (III) liquid phase catalytic oxidation agent and calcium hypochlorite higher bleaching powder, and not by catalytic reaction and absorption, have only the PH3 can be by catalytic oxidation and absorption.
Therefore this method can be from reducing or removing PH3 in the stopple coupon to the corrosive attack of air sampling formula high sensitivity smoke detection warning system aspiration pump, pneumatic sensor and detection cavity in essence.
This method also has a benefit to air sampling formula high sensitivity smoke detection warning system: the dust granule in the air sample of being taken out is when passing through the WS of Pd (II)-Fe (III) liquid phase catalytic oxidation agent and calcium hypochlorite higher bleaching powder; Can be by the solution washing and precipitating; Reach good filter effect; Further reduce the interference of dust, thereby reduce wrong report air sampling formula high sensitivity smoke detection warning system.It is a kind of novel, the high sensitivity of air sampling formula efficiently smoke detection warning system dust filter method.
Description of drawings
Fig. 1 is the treatment scheme synoptic diagram of PH3 and smoke particle mixing air:
Wherein:
The stopple coupon (1-4 root) of 1--air sampling formula high sensitivity smoke detection warning system
2--suction type suction type Reaction Separation device
The stopple coupon (1-4 root) of 3--air sampling formula high sensitivity smoke detection warning system
4--air sampling formula high sensitivity smoke detection warning system
The detection cavity of 5--gas sampling type high sensitivity smoke detection warning system
The aspiration pump of the smog of 6--air sampling formula high sensitivity smoke detection warning system
Fig. 2 is a suction type Reaction Separation device synoptic diagram:
Wherein:
The stopple coupon (1-4 root) of 1--air sampling formula high sensitivity smoke detection warning system
The 2--gland bonnet
Reinforced and the slag-drip opening of 3--
The dismountable bubble baffle plate with holes of 4--(fusing) with gland bonnet
5--negative pressure chamber
The WS of 6--Pd (II)-Fe (III) liquid phase catalytic oxidation agent and calcium hypochlorite higher bleaching powder
The 7--bubble generator
8--suction type Reaction Separation device bottle
The stopple coupon (1-4 root) of 9--air sampling formula high sensitivity smoke detection warning system
10--air sampling formula high sensitivity smoke detection warning system housing
The circuit main board of 11--air sampling formula high sensitivity smoke detection warning system
The detection cavity of 12--air sampling formula high sensitivity smoke detection warning system
The pneumatic sensor circuit board of 13--air sampling formula high sensitivity smoke detection warning system
The aspiration pump of 14--air sampling formula high sensitivity smoke detection warning system
15--air sampling formula high sensitivity smoke detection warning system gas outlet
The practical implementation method
2 couples of the present invention do more detailed explanation below in conjunction with accompanying drawing:
The mixing air that contains PH3 and smog at normal temperatures and pressures; Be incorporated into the bottom of suction type Reaction Separation device (7) by the aspiration pump (13) of air sampling formula high sensitivity smoke detection warning system; The mixing air of PH3 and smog is dispersed into a lot of minute bubbles through bubble generator (6), and Pd (II)-Fe (HI) the liquid phase catalytic oxidation agent in these minute bubbles and the suction type Reaction Separation device (also can) the calcium hypochlorite higher bleaching powder WS (5) fully mixes the generation chemical reaction.Tap water, Pd (II)-Fe (III) liquid phase catalytic oxidation agent (also can) and the WS of calcium hypochlorite higher bleaching powder be added with slag-drip opening (3) by reinforced in advance, and with the gland bonnet lid tightly.With the preceding calcium hypochlorite higher bleaching powder of PH3 reaction, principal ingredient is not Ca (CLO) 2.Available chlorine content is more than 60%.Experimental study through a large amount of proves: Pd (II)-Fe (III) liquid phase catalytic oxidation agent has higher catalytic oxidation activity to PH3 under low temperature (22-73 ℃), condition of normal pressure.Its catalytic activity, stability and dephosphorization efficient are all very high, therefore can absorb PH3 more up hill and dale.PH3 in the mixing air can with the WS in the hypochlorite generation chemical reaction of strong oxidizing property is arranged; Generate the H2PO4 of trace and harmless CaCl2; So just significantly reduce or removed the PH3 that metal object is had the strong corrosion effect, also just can not constitute corrosion to the metal parts such as aspiration pump, pneumatic sensor and detection cavity of air sampling formula high sensitivity smoke detection warning system and threaten.And any chemical reaction can not take place with the WS of Pd2+/Fe3+ binary catalyst and calcium hypochlorite higher bleaching powder in the smoke particle in the mixing air; The smog mixing air of removing PH3 separates with the calcium hypochlorite higher bleaching powder WS (5) with Pd (II)-Fe (III) liquid phase catalytic oxidation agent under the suction function of suction type Reaction Separation device (7) automatically; Again through dismountable baffle plate with holes (2); Get into the stopple coupon (8) of air sampling formula high sensitivity smoke detection warning system; Be inhaled into then in the detection cavity of air sampling formula high sensitivity smoke detection warning system; By detection cavity the smog mixing air is measured, calculated and judges, whether final decision sends alarm of fire.Dust granule in the smog mixing air because the precipitating action of water can sink in the WS, thereby reaches better filter effect, reduces the false alarm of air sampling formula high sensitivity smoke detection warning system.Waste residue and waste liquid through long-time chemical reaction produces are nontoxic; Can discharge waste residue and waste liquid by the slag-drip opening (3) of suction type Reaction Separation device termly according to automatic alarm, and the Pd that more renews (II)-Fe (III) liquid phase catalytic oxidation agent and calcium hypochlorite higher bleaching powder are water-soluble.
The invention solves the fire-fighting detection alarm difficult problem that the smoke detection warning system can't be used in the phosphine-containing gas environment.For the person and property in the phosphine-containing gas environment of deep-etching, severe toxicity, easy spontaneous combustion and self-destruction provide reliable guarantee.The present invention has that smoke detecting alarm system can on-the-spotly be installed away from hydrogen phosphide corrosion, sensitivity is high, the dust filter type advanced, streamer mode is unique, rate of false alarm is extremely low, the comprehensively use of kinds of protect mode, catalytic oxidant and remarkable advantages such as absorbing agent is cheap and easy to get, process equipment is simple, easy to operate, dephosphorization efficient height.
Below through examples of implementation the present invention is described further, but it does not limit protection scope of the present invention:
Embodiment one
When carrying out the aluminum phosphide fumigation desinsection, be Pd (II)-Fe (III) liquid phase catalytic oxidation agent of 0.114mol/L with (1) Pd2+ and Fe3+ ion concentration; (2) calcium hypochlorite higher bleaching powder saturated solution 1600ml joins the high 460mm that is together, and diameter is in the suction type Reaction Separation device of 168mm.Operate as follows:
(1) the gland bonnet lid is tight, be as the criterion with air tight;
(2) in the warehouse of aluminum phosphide fumigation desinsection, put the saw wood ash that a basin glows;
(3) the UPCV stopple coupon of air sampling formula high sensitivity smoke detection warning system and the warehouse and the suction type Reaction Separation device that carry out the aluminum phosphide fumigation desinsection are connected, note closing earlier the air intake valve of air inlet draft tube;
(4) suction type Reaction Separation device and air sampling formula high sensitivity smoke detection warning system are connected with the UPCV stopple coupon;
(5) open the air intake valve of air inlet draft tube;
(6) power supply of unlatching air sampling formula high sensitivity smoke detection warning system;
(7) with the rotating speed of software adjustment air sampling formula high sensitivity smoke detection warning system aspiration pump, making gas flow is 95ml/min, sucks the PH3 concentration mg/m3 in the mouth of pipe mixing air, and promptly CPH3 is 200mg/m3;
(8), carry out under the normal pressure at normal temperature.
Result of implementation:
(1) uses than long tube method of testing the gas of being discharged from air sampling formula high sensitivity smoke detection warning system is carried out the measurement of phosphine gas content; And the result who draws with the chemical analysis analysis is: do not detect the composition of hydrogen phosphide, phosphine containing not in the mixed gas of promptly discharging.
(2) air sampling formula high sensitivity smoke detection warning system is quoted fire alarm in start in back 120 seconds.
(3) after equipment was worked 150 days in this environment; Through checking, metal parts such as circuit board, electronic devices and components, aspiration pump and the housing of the high sensitivity of air sampling formula as a result smoke detection warning system and power lead thereof and signal wire are all taken place by the phenomenon of hydrogen phosphide corrosion.
Embodiment two
The aluminum phosphide fumigation desinsection is Pd (II)-Fe (III) liquid phase catalytic oxidation agent of 0.114mol/L with (1) Pd2+ and Fe3+ ion concentration after accomplishing; (2) calcium hypochlorite higher bleaching powder saturated solution 1600ml joins the high 460mm that is together, and diameter is in the suction type Reaction Separation device of 168mm.Operate as follows:
(1) the gland bonnet lid is tight, be as the criterion with air tight;
(2) in the warehouse of aluminum phosphide fumigation desinsection, put the saw wood ash that a basin glows;
(3) the UPCV stopple coupon of air sampling formula high sensitivity smoke detection warning system and the warehouse and the suction type Reaction Separation device that carry out the aluminum phosphide fumigation desinsection are connected, note closing earlier the air intake valve of air inlet draft tube;
(4) suction type Reaction Separation device and air sampling formula high sensitivity smoke detection warning system are connected with the UPCV stopple coupon;
(5) open the air intake valve of air inlet draft tube;
(6) power supply of unlatching air sampling formula high sensitivity smoke detection warning system;
(7) with the rotating speed of software adjustment air sampling formula high sensitivity smoke detection warning system aspiration pump, making gas flow is 95ml/min, sucks the PH3 concentration mg/m3 in the mouth of pipe mixing air, and promptly CPH3 is 200mg/m3;
(8), carry out under the normal pressure at normal temperature.
Result of implementation:
(1) uses than long tube method of testing the gas of being discharged from air sampling formula high sensitivity smoke detection warning system is carried out the measurement of phosphine gas content; And the result who draws with the chemical analysis analysis is: do not detect the composition of hydrogen phosphide, phosphine containing not in the mixed gas of promptly discharging.
(2) air sampling formula high sensitivity smoke detection warning system is quoted fire alarm in start in back 120 seconds.
(3) after equipment was worked 60 days in this environment; Through checking, metal parts such as the circuit board of the high sensitivity of air sampling formula as a result smoke detection warning system, electronics unit device, bleed pump and housing and power lead thereof and signal wire are all taken place by the phenomenon of hydrogen phosphide corrosion.
Embodiment three
When carrying out the aluminum phosphide fumigation desinsection, calcium hypochlorite higher bleaching powder saturated solution 1300ml is joined the high 460mm that is, diameter is in the suction type Reaction Separation device of 168mm.Operate as follows:
(1) the gland bonnet lid is tight, be as the criterion with air tight;
(2) in the warehouse of aluminum phosphide fumigation desinsection, put the saw wood ash that a basin glows;
(3) the UPCV stopple coupon of air sampling formula high sensitivity smoke detection warning system and the warehouse and the suction type Reaction Separation device that carry out the aluminum phosphide fumigation desinsection are connected, note closing earlier the air intake valve of air inlet draft tube;
(4) suction type Reaction Separation device and air sampling formula high sensitivity smoke detection warning system are connected with the UPCV stopple coupon;
(5) open the air intake valve of air inlet draft tube;
(6) power supply of unlatching air sampling formula high sensitivity smoke detection warning system;
(7) with the rotating speed of software adjustment air sampling formula high sensitivity smoke detection warning system aspiration pump, make gas speed be 75mm/s, the PH3 concentration that sucks in the mouth of pipe mixing air is 230ppm
(8), carry out under the normal pressure at normal temperature.
Result of implementation:
(1) uses than long tube method of testing the gas of being discharged from air sampling formula high sensitivity smoke detection warning system is carried out the measurement of phosphine gas content; And the result who draws with the chemical analysis analysis is: do not detect the composition of hydrogen phosphide, phosphine containing not in the mixed gas of promptly discharging.
(2) air sampling formula high sensitivity smoke detection warning system is quoted fire alarm in start in back 120 seconds.
(3) after equipment was worked 90 days in this environment; Through checking, metal parts such as circuit board, electronic devices and components, aspiration pump and the housing of the high sensitivity of air sampling formula as a result smoke detection warning system and power lead thereof and signal wire are all taken place by the phenomenon of hydrogen phosphide corrosion.
Embodiment four
After the aluminum phosphide fumigation desinsection is accomplished, calcium hypochlorite higher bleaching powder saturated solution 1300ml is joined the high 460mm that is, diameter is in the suction type Reaction Separation device of 168mm.Operate as follows:
(1) the gland bonnet lid is tight, be as the criterion with air tight;
(2) in the warehouse of aluminum phosphide fumigation desinsection, put the saw wood ash that a basin glows;
(3) the UPCV stopple coupon of air sampling formula high sensitivity smoke detection warning system and the warehouse and the suction type Reaction Separation device that carry out the aluminum phosphide fumigation desinsection are connected, note closing earlier the air intake valve of air inlet draft tube;
(4) suction type Reaction Separation device and air sampling formula high sensitivity smoke detection warning system are connected with the UPCV stopple coupon;
(5) open the air intake valve of air inlet draft tube;
(6) power supply of unlatching air sampling formula high sensitivity smoke detection warning system;
(7) with the rotating speed of software adjustment air sampling formula high sensitivity smoke detection warning system aspiration pump, make gas speed be 75mm/s, the PH3 concentration that sucks in the mouth of pipe mixing air is 210ppm;
(8), carry out under the normal pressure at normal temperature.
Result of implementation:
(1) uses than long tube method of testing the gas of being discharged from air sampling formula high sensitivity smoke detection warning system is carried out the measurement of phosphine gas content; And the result who draws with the chemical analysis analysis is: do not detect the composition of hydrogen phosphide, phosphine containing not in the mixed gas of promptly discharging.
(2) air sampling formula high sensitivity smoke detection warning system is quoted fire alarm in start in back 120 seconds.
(3) after equipment was worked 90 days in this environment; Through checking, metal parts such as circuit board, electronic devices and components, aspiration pump and the housing of the high sensitivity of air sampling formula as a result smoke detection warning system and power lead thereof and signal wire are all taken place by the phenomenon of hydrogen phosphide corrosion.
Embodiment five
After the aluminum phosphide fumigation desinsection was accomplished, 90g dissolved in the 1200ml tap water with the calcium hypochlorite higher bleaching powder, joined the high 460mm that is, diameter is in the suction type Reaction Separation device of 168mm.Operate as follows:
(1) the gland bonnet lid is tight, be as the criterion with air tight;
(2) in the warehouse of aluminum phosphide fumigation desinsection, put the saw wood ash that a basin glows;
(3) the UPCV stopple coupon of air sampling formula high sensitivity smoke detection warning system and the warehouse and the suction type Reaction Separation device that carry out the aluminum phosphide fumigation desinsection are connected, note closing earlier the air intake valve of air inlet draft tube;
(4) suction type Reaction Separation device and air sampling formula high sensitivity smoke detection warning system are connected with the UPCV stopple coupon;
(5) open the air intake valve of air inlet draft tube;
(6) power supply of unlatching air sampling formula high sensitivity smoke detection warning system;
(7) with the rotating speed of software adjustment air sampling formula high sensitivity smoke detection warning system aspiration pump, make gas speed be 40mm/s, the PH3 concentration that sucks in the mouth of pipe mixing air is 380ppm;
(8), carry out under the normal pressure at normal temperature.
Result of implementation:
(1) uses than long tube method of testing the gas of being discharged from air sampling formula high sensitivity smoke detection warning system is carried out the measurement of phosphine gas content; And the result who draws with the chemical analysis analysis is: do not detect the composition of hydrogen phosphide, phosphine containing not in the mixed gas of promptly discharging.
(2) high sensitivity smoke detection warning system is quoted fire alarm in start in back 120 seconds.
(3) after equipment was worked 60 days in this environment; Through checking, metal parts such as circuit board, electronic devices and components aspiration pump and the housing of the high sensitivity of air sampling formula as a result smoke detection warning system and power lead thereof and signal wire are all taken place by the phenomenon of hydrogen phosphide corrosion.
Embodiment six
After the aluminum phosphide fumigation desinsection was accomplished, 110g dissolved in the 1300ml tap water with the calcium hypochlorite higher bleaching powder, joined the high 460mm that is, diameter is in the suction type Reaction Separation device of 168mm.Operate as follows:
(1) the gland bonnet lid is tight, be as the criterion with air tight;
(2) in the warehouse of aluminum phosphide fumigation desinsection, put the saw wood ash that a basin glows;
(3) the UPCV stopple coupon of air sampling formula high sensitivity smoke detection warning system and the warehouse and the suction type Reaction Separation device that carry out the aluminum phosphide fumigation desinsection are connected, note closing earlier the air intake valve of air inlet draft tube;
(4) suction type Reaction Separation device and air sampling formula high sensitivity smoke detection warning system are connected with the UPCV stopple coupon;
(5) open the air intake valve of air inlet draft tube;
(6) power supply of unlatching air sampling formula high sensitivity smoke detection warning system;
(7) with the rotating speed of software adjustment air sampling formula high sensitivity smoke detection warning system aspiration pump, make gas speed be 42mm/s, the PH3 concentration that sucks in the mouth of pipe mixing air is 610ppm;
(8), carry out under the normal pressure at normal temperature.
Result of implementation:
(1) uses than long tube method of testing the gas of being discharged from air sampling formula high sensitivity smoke detection warning system is carried out the measurement of phosphine gas content; And the result who draws with the chemical analysis analysis is: do not detect the composition of hydrogen phosphide, phosphine containing not in the mixed gas of promptly discharging.
(2) air sampling formula high sensitivity smoke detection warning system is quoted fire alarm in start in back 120 seconds.
(3) after equipment was worked 120 days in this environment; Through checking, metal parts such as circuit board, electronic devices and components, aspiration pump and the housing of the high sensitivity of air sampling formula as a result smoke detection warning system and power lead thereof and signal wire are all taken place by the phenomenon of hydrogen phosphide corrosion.
Claims (3)
1. method that the smoke detection warning system can be used in the hydrogen phosphide strong corrosive environment; Its characteristic 1 does, the air sampling formula high sensitivity smoke detection warning system of said method for adopting detecting alarm itself to install and use away from aluminum phosphide fumigation desinsection scene; Its characteristic 2 does, said method is for only letting 5% of after treatment mixing air sample enter in the smoke detection chamber, and all the other 95% are directly discharged; Its characteristic 3 is that said method is that the circuit board of air sampling formula high sensitivity smoke detection warning system, these metal parts of electronic component are used highdensity epoxy coating; Its characteristic 4 does; The key step of said method is PH3 and the smog mixing air behind the aluminum phosphide fumigation desinsection; Gas flow with 95ml/min carries out catalytic oxidation absorption and separating treatment in the suction type Reaction Separation device (2) of built-in catalytic oxidant and absorbing agent; Wherein: said catalytic oxidant is the liquid phase catalytic oxidation agent, and its principal ingredient is Pd (II)-Fe (III) or pd/c, and Pd2+ and Fe3+ ion concentration are 0.114mol/L; Said absorbing agent is unsaturated, the saturated or supersaturated aqueous solution of calcium hypochlorite higher bleaching powder; The principal ingredient of calcium hypochlorite higher bleaching powder is Ca (CLO) 2; Wherein the effective content of chlorine is more than 60%; Said suction type Reaction Separation device (2) comprising: it is mixing air ingress pipe (1) that the stopple coupon of 1-4 root air sampling formula high sensitivity smoke detection warning system is arranged on suction type Reaction Separation device (2) top; Gland bonnet, reinforced and slag-drip opening (3), the stopple coupon (9) that the 1-4 root links to each other with the air intake opening of air sampling formula high sensitivity smoke detection warning system aspiration pump; Have with gland bonnet in suction type Reaction Separation device (2) inside and to fuse and dismountable bubble baffle plate with holes (4); Its aperture is 0.1-0.5mm; Negative pressure chamber (5); The bubble generator (7) that links to each other with the mixed gas ingress pipe, the column that bubble generator (7) is made for middle sand, its aperture is 0.2-8mm.
2. the method for claim 1; It is characterized by; Dust granule in the mixing air can mix with catalytic oxidant or aqueous solutions of absorbent and be cleaned deposition; Become the part of waste residue and waste liquid, thereby satisfy the requirement that air sampling formula high sensitivity smoke detection warning system is filtered dust granule in the smog air sample better.
3. like claim 1 and 2 described methods; It is characterized by; Will be with the mixing air that contains PH3 and smog behind the aluminum phosphide fumigation desinsection; Be incorporated into the bubble generator (7) of suction type Reaction Separation device (2) bottom by the aspiration pump (14) of air sampling formula high sensitivity smoke detection warning system; The mixing air of PH3 and smog is through bubble generator (7); After being dispersed into many minute bubbles equably; Through Pd (II)-Fe (III) liquid phase catalytic oxidation agent and the calcium hypochlorite higher bleaching powder WS in the suction type Reaction Separation device (2), Pd (II)-Fe (III) liquid phase catalytic oxidation agent, the calcium hypochlorite higher bleaching powder WS and tap water be in advance by reinforced and slag-drip opening (3) adding, and reacted smog mixing air is under the effect of the aspiration pump (14) of air sampling formula high sensitivity smoke detection warning system and negative pressure chamber (5); Through fusing with gland bonnet and dismountable bubble baffle plate with holes (4); The 1-4 root gets into the aspiration pump (14) and the detection cavity (12) of air sampling formula high sensitivity smoke detection warning system along the continuous stopple coupon (9) of the air intake opening of air sampling formula air sampling formula high sensitivity smoke detection warning system aspiration pump, is discharged to from air sampling formula high sensitivity smoke detection warning system place far away by gas outlet (15) at last; Waste residue and waste liquid through long-time chemical reaction produces are discharged by reinforced and slag-drip opening (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102363973A CN102054325B (en) | 2009-10-28 | 2009-10-28 | Method for enabling smoke detection and alarm system to be used in phosphine environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102363973A CN102054325B (en) | 2009-10-28 | 2009-10-28 | Method for enabling smoke detection and alarm system to be used in phosphine environment |
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| Publication Number | Publication Date |
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| CN102054325A CN102054325A (en) | 2011-05-11 |
| CN102054325B true CN102054325B (en) | 2012-04-18 |
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| CN106546286B (en) * | 2016-10-20 | 2020-01-21 | 浙江中烟工业有限责任公司 | Tobacco bale comprehensive technological parameter on-line monitoring system |
| CN109459277B (en) * | 2018-11-22 | 2024-04-05 | 国网浙江省电力有限公司电力科学研究院 | Constant-speed control box applied to portable coal dust sampling device and application method of constant-speed control box |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065338A (en) * | 1991-03-22 | 1992-10-14 | 公安部沈阳消防科学研究所 | A kind of detection of fire smell |
| CN1750057A (en) * | 2004-09-17 | 2006-03-22 | 徐小源 | Fire automatic warning device and its method for visual intelligent composite fire extinguishing |
| CN101350868A (en) * | 2008-08-27 | 2009-01-21 | 深圳华为通信技术有限公司 | Prewarning method and communication apparatus |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065338A (en) * | 1991-03-22 | 1992-10-14 | 公安部沈阳消防科学研究所 | A kind of detection of fire smell |
| CN1750057A (en) * | 2004-09-17 | 2006-03-22 | 徐小源 | Fire automatic warning device and its method for visual intelligent composite fire extinguishing |
| CN101350868A (en) * | 2008-08-27 | 2009-01-21 | 深圳华为通信技术有限公司 | Prewarning method and communication apparatus |
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| CN102054325A (en) | 2011-05-11 |
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