CN104090075B - Spot check agent, spot check device and spot check agent manufacture method - Google Patents
Spot check agent, spot check device and spot check agent manufacture method Download PDFInfo
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- CN104090075B CN104090075B CN201410328694.1A CN201410328694A CN104090075B CN 104090075 B CN104090075 B CN 104090075B CN 201410328694 A CN201410328694 A CN 201410328694A CN 104090075 B CN104090075 B CN 104090075B
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Abstract
The present invention provides a kind of spot check agent, for spot check flammable gas alarm, calculate by mass percentage, comprising: the organic solvent of the coagulator of 2.5%～8%, 76%～93% and the water of 5%～16%, described organic solvent uniformly mixes with water, and be wrapped in described coagulator, described organic solvent includes normal hexane or/and ether, and described coagulator includes sodium stearate.The present invention also provides for a kind of spot check device using above-mentioned spot check agent and the manufacture method of above-mentioned spot check agent.Above-mentioned spot check agent and spot check device using method are simple, need not change the state position etc. of flammable gas alarm, directly can be carried out detection, have easy to operate, respond the features such as sensitive, detection is quick；Described spot check agent and described spot check device are cheap, and material is easy to get, less pollution, it is possible in real time alarm is carried out spot check.The manufacture method of above-mentioned spot check agent is fairly simple.
Description
Technical field
Detection device that the present invention relates to a kind of flammable gas alarm and preparation method thereof, particularly relates to a kind of for detecting the spot check agent of family's flammable gas alarm, spot check device and spot check agent manufacture method.
Background technology
Natural gas applications is in family life, although providing conveniently for family life, also the environmental protection for environment is made that contribution, but natural gas is flammable explosive gas, if gas leakage is easier to cause explosion accident, cause damage to property, personal damage, it is therefore desirable to natural gas is monitored, with the safety of support personnel's property.
Although existing flammable gas alarm can monitor whether combustion gas exceeds standard in real time, for the guarantee that safely provided of personnel's property, but gas leakage is not the most recurrent thing.So, described flammable gas alarm even may not reported to the police in the several years within a period of time, also cannot determine whether described flammable gas alarm can also normally work simultaneously.Accordingly, it would be desirable to carry out in real time or periodic detection for described flammable gas alarm, to guarantee its warning effect.
Although whether the Circuits System of existing flammable gas alarm self is used for monitoring wrong report, null offset, but can not check and can report to the police under Normal Alarm environment.So, when described flammable gas alarm is detected, need from gas burning system, take off described flammable gas alarm, detect to laboratory, so that described kind of detection method operation is comparatively laborious, actually seldom described flammable gas alarm is carried out in real time or periodic detection.
Summary of the invention
By in consideration of it, monitor the deficiency of existence in real time for flammable gas alarm in prior art, necessary offer is a kind of can be that home-use flammable gas alarm creates the spot check agent of warning environment, spot check device and spot check agent manufacture method.
The present invention provides a kind of spot check agent, for spot check flammable gas alarm, calculate by mass percentage, comprising: the organic solvent of the coagulator of 2%～8%, 76%～93% and the water of 5%～16%, described organic solvent uniformly mixes with water, and is wrapped in described coagulator.
Herein presented percent each means that mass percent, the purity of reagent used herein, medicine etc. are analytical pure level.
Described coagulator is to exist in solid form at normal temperatures.Described coagulator mainly includes sodium stearate, is used to store described organic solvent.It can be 3%, 4%, 5%, 6%, 7%, 8% etc. that described coagulator is calculated in described spot check agent in parts by weight.Described coagulator can be sodium stearate, or the mixture of sodium stearate and sodium hydroxide (NaOH)；Wherein, in the sodium stearate mixture with sodium hydroxide (NaOH), the content of sodium stearate is more than 50%, preferably 75%, 80%, 90%, 95% etc..Preferably, described spot check agent includes: 2%～6% coagulator, 79%～93% organic solvent, and 5%～15% water；Wherein, the content of described organic solvent can be 79%, 81%, 85%, 88%, 90%, 93% etc.；The content of water can be 5%, 8%, 10%, 11%, 13%, 15% etc..It is highly preferred that described coagulator is sodium stearate.
Described organic solvent is to have volatile organic liquid reagent, and described organic reagent and water are dispersed in described spot check agent.Described organic solvent is the source of the spot check gas that described spot check agent is volatilized.Described organic solvent includes normal hexane or/and ether.Specifically, described organic solvent can be ether or normal hexane；Described organic solvent can also be normal hexane and the combination in any of one or more in ethanol, ether, normal octane and hexamethylene, as, normal hexane and any combination of ether, normal hexane and any combination of ethanol, normal hexane and any combination of normal octane, normal hexane and any combination of hexamethylene, normal hexane and ether and any combination etc. of hexamethylene；Described organic solvent can also be ether and the combination in any of one or more in ethanol, normal octane and hexamethylene, as, ether and any combination of ethanol, ether and any combination of normal octane, ether and any combination of hexamethylene, ether and ethanol and any combination of normal octane, ether and normal octane and any combination etc. of hexamethylene.Preferably, described organic solvent by normal hexane with ethanol according to (20～30): the mass ratio of (49～73) mixes and forms, now, described spot check agent can be made up of the ethanol of the normal hexane of described coagulator, 20%～30%, 49%～73% and the water of 5%～15% of 2%～6%；Wherein, the content of described normal hexane can be 20%, 22%, 25%, 27%, 29%, 30% etc.；The content of described ethanol can be 49%, 50%, 55%, 59%, 62%, 67%, 70%, 73% etc..
Described spot check agent can also include paraffin, and paraffin is dispersed in described coagulator.Owing to paraffin is easier solidification, so needing the amount of water the most during preparing described spot check agent, therefore, the water content of described spot check agent can be higher.Preferably, described spot check agent includes: the described organic solvent of the paraffin of described coagulator, 0.5%～2%, 76%～90.5% of 2%～6%, and the water of 7%～16%；Wherein, the content of described paraffin can be 0.5%, 1%, 2%；The content of described organic solvent can be 76%, 80%, 85%, 88%, 90%, 90.5% etc.；The content of water can be 7%, 8%, 10%, 12%, 14%, 16% etc..
Described spot check agent is solid at normal temperatures, owing to the coagulator in described spot check agent uniformly mixes with organic solvent, and organic solvent has volatility, so, described spot check agent also has volatility, can uniformly volatilize a certain amount of spot check gas, is used for detecting flammable gas alarm the most normal, wherein, described spot check gas is described organic solvent.The concentration of methane when the concentration of spot check gas is not less than the warning fixed point upper limit of flammable gas alarm, described spot check agent generally can be used to spot check flammable gas alarm.The warning fixed point upper limit of national Specification flammable gas alarm is less than 25%LEL, and most of fixed points, at 7%LEL～20%LEL, are equivalent to the concentration 3500～10000ppm of methane.At normal temperatures, the concentration of the spot check gas volatilized is equivalent to the methane that concentration is 3500～20000ppm in spot check agent in the present invention, has reached to be even more than the warning fixed point 20% of conventional flammable gas alarm
LEL, the spot check agent that therefore present invention provides can be used to spot check flammable gas alarm, the natural gas in home alarm of especially G series, has the natural gas in home alarm of spot check mouth.
The present invention also provides for a kind of spot check device using above-mentioned spot check agent, and it includes having container and the spot check agent sealing lid, and described spot check agent is placed in described container.
Described container is primarily used to store described spot check agent so that the convenient use of described spot check agent, mobile, storage.This container includes vessel and the sealing lid being arranged on this vessel.Described vessel has vessel port, described sealing lid to cooperatively form confined space with the opening of described container.The sealing lid of described container is connected with described container by spiral way or snap.The sealing lid of described container can also have the lid of taper or the lid of cylindricality, and the lid of the taper of this sealing lid or the lid plug of cylindricality are located in the opening of described container；The described opening covered with described container that seals is sealed by frosted mode.Described container is large container.Described large container includes large container body and seals lid, and on the opening of the large container that this sealing lid is fixed on large container body, and the lid that seals of this large container is fixed on the opening of described large container by modes such as frosted, spiral, buckles.Preferably, described container is wide mouthed bottle, and the bottleneck that the sealing of this wide mouthed bottle is covered at wide mouthed bottle makes this wide mouthed bottle form a confined space.Preferably, described container is rigid container, then being also not easy deformation even if being squeezed, thus avoiding this spot check device to change spot check gaseous volatilization amount because of the deformation of container, and it is higher that this spot check device is easier to control spot check gaseous volatilization amount, accuracy.
Described spot check device also includes sponge, and this sponge is arranged in described container, and is arranged on the upper surface of described spot check agent, for absorbing the spot check agent liquefied at relatively high temperatures to avoid spot check agent to flow out described container when liquefaction.The spot check gas that described sponge can also avoid described spot check agent to volatilize forms the performance of bigger drips flammable gas alarm.Described sponge can also make described spot check device operationally, and the spot check gas that described spot check agent is volatilized uniformly escapes described container by described sponge.Therefore, described spot check device is easier to control spot check gaseous volatilization amount, accuracy compares high.
When described spot check device does not works, the lid that seals of described container is to seal on lid container mouth, i.e. described spot check agent is closed in the above-described container.When using spot check device spot check flammable gas alarm, need to extract the sealing lid of described container, directly described vessel port is put into the sensor proximity in online flammable gas alarm carries out spot check, as, spot check near air inlet in flammable gas alarm, it is not necessary to the state position etc. that dismantle described alarm, need not change flammable gas alarm just can carry out spot check to alarm.
When using described spot check device spot check flammable gas alarm, the response voltage using WS-64 gas sensor tester to determine is about 3.0～5.2 volts, preferably, response voltage is 3.4～4.4 volts, such as 3.4 volts, 3.7 volts, 4.0 volts, 4.2 volts, 4.4 volts, the concentration of the spot check gas that the spot check agent in described spot check device volatilizes is equivalent to the methane of 3500～10000ppm.Commercially available flammable gas alarm major part is G series flammable gas alarm, and warning fixed point scope is generally specified as 7%～20% LEL, and corresponding methane concentration is 3500～10000ppm, responds voltage about 3.4～3.74 volts.When the spot check gas that described spot check agent volatilizes concentration less than be equivalent to methane that concentration is 3500ppm or less than the 7%LEL of the warning fixed point upper limit of corresponding flammable gas alarm or use WS-64 gas sensor tester to determine response voltage less than 3.4 volts time, during with the alarm that described spot check device spot check is commercially available, described flammable gas alarm can not be reported to the police, and described spot check device does not has spot check effect.When the concentration of the spot check gas that the spot check agent in described spot check device volatilizes is higher than 3.74 volts higher than the response voltage being equivalent to the 10000ppm of methane concentration, employing WS-64 gas sensor tester determines, during with commercially available described in described spot check device spot check flammable gas alarm, described alarm can be reported to the police, but zero drift phenomenon may occur in described alarm.
The manufacture method of the spot check agent that the present invention provides is similar to the manufacture method of solid alcohol, and the method preparing solid alcohol can be used to make described spot check agent, and difference is: make the proportion relation between raw material and the raw material used by above-mentioned spot check agent.Specifically, the present invention provides a kind of method making above-mentioned spot check agent, and it comprises the following steps:
(1) 1～6 gram of described coagulator is dissolved in 5～40 milliliter of first organic solvent obtains the first mixed liquor, 5～20 milliliter of second organic solvent, 0.1～1 gram of NaOH and 3～15 milliliters of water are mixed to get the second mixed liquor, wherein, described first organic solvent and described second organic solvent include normal hexane or ether；
(2) mix described first mixed liquor and described second mixed liquor, uniformly mix, and heat 5～20 minutes at 60～70 degree, obtain the 3rd mixed liquor；
(3) described 3rd mixed liquor being stood, cooled down, after cooling, solidification obtains described spot check agent.
Described step (one) be specifically as follows: adds 1～6 gram of described coagulator and 5～40 milliliter of first organic solvent in flask, and mixing heating in water bath are to 50～70 DEG C, and insulation obtains described first mixed liquor to whole dissolving；Respectively 5～20 milliliter of second organic solvent, the NaOH of 0.1～1 gram and 3～15 milliliters of water are added in beaker, after stirring and dissolving, obtain described second mixed liquor.Preferably, described flask is there-necked flask.
Described first organic solvent and the second organic solvent can be normal hexane, or ether, or the combination in any of one or more in normal hexane and ether, ethanol, normal octane, hexamethylene, or ether and the combination in any of one or more in ethanol, normal octane, hexamethylene.In described step one, the component of described first organic solvent and described second organic solvent can be identical, it is also possible to differs.As, described first organic solvent can be ethanol and the mixed solvent etc. of the mixed solvent of the mixed solvent of hexamethylene, ethanol and normal hexane, normal hexane and the mixed solvent of normal octane, hexamethylene and the mixed solvent of normal octane, ether and the mixed solvent of normal hexane, normal octane and the mixed solvent of ether, hexamethylene and ether, now, described second organic solvent can be ethanol, ether, normal hexane, normal octane, hexamethylene, it is also possible to is mixed solvent；Otherwise, still.
The raw material mentioned in described step () is preferably: stearic acid 0.5～2 grams, NaOH 0.3～1 gram, water, analytical pure normal hexane 10～30 milliliters, analytical pure ethanol 10～30 milliliters.Wherein, the water needed for forming described first mixed liquor and described second mixed liquor is total up to 2～8 milliliters；Described first organic solvent and the second organic solvent use 10～30 milliliters of analytical pure normal hexane and 10～30 milliliters of analytical pure ethanol altogether, specifically, described first organic solvent and the second organic solvent can be single solvent, it is also possible to for the mixture of normal hexane Yu ethanol.
It addition, during forming described first mixed liquor, it is also possible to add a certain amount of paraffin.Owing to paraffin easily solidifies, adding water and can reduce its freezing point, the water yield required for described step one can increase, thus avoids described 3rd mixed liquor to solidify in the most not pouring described mould into.
Described step (two) be specifically as follows: is added in described there-necked flask by described second mixed liquor, mixes with described first mixed liquor；Then heat at a temperature of 60～70 degree about 5～20 minutes, stop heating afterwards, obtain described 3rd mixed liquor.Preferably, heating-up temperature is 65 degree.Described heat time heating time can be 5 minutes, 8 minutes, 10 minutes, 15 minutes, 18 minutes, 20 minutes etc..Specifically, need heat time heating time according to depending on practical situation.
Described step (three) be specifically as follows: pours in mould by described 3rd solution from described flask while hot, is just frozen into solid matter after cooling, obtains described spot check agent.When described mould is that described step (three), while obtaining spot check agent, obtains the spot check device containing described spot check agent with when sealing the container covered.
Compared with prior art, response value produced by the volatile organic solvent in the spot check agent of present invention offer and spot check device has good corresponding with methane, can substitute for methane and carries out spot check；The spot check gas that described spot check agent is volatilized has certain impact, some can be had to affect described flammable gas alarm in the short time, but aging through electrified regulation after a while, and alarm can also return to normal condition, does not affect work；The spot check utensil using described spot check agent has feature easy to carry, need not change the state position etc. of alarm, directly can be carried out detection, have easy to operate, respond the features such as sensitive, detection is quick；Described spot check agent and described spot check device are cheap, and material is easy to get, less pollution, it is possible in real time alarm is carried out spot check.
Further, the spot check device that the present invention provides arranges sponge by stacking in described spot check agent, and sponge can absorb the spot check agent liquefied at relatively high temperatures to avoid spot check agent to flow out described container, the loss of minimizing spot check agent when liquefaction；The spot check gas that sponge can also avoid described spot check agent to volatilize forms the performance of bigger drips flammable gas alarm；The spot check gas that sponge can also make described spot check agent be volatilized uniformly escapes described container by sponge；When described container is rigid container, also it is not easy deformation even if being squeezed, thus avoids this spot check device to change spot check gaseous volatilization amount because of the deformation of container.Therefore, described spot check device is easier to control spot check gaseous volatilization amount, accuracy compares high.
It addition, the manufacture method of the spot check agent of present invention offer adds water in the preparation, on the one hand slow down the volatilization of organic solvent, be conducive to preserving, on the other hand avoid described 3rd mixed liquor and solidify in flask, it is simple to have sufficient time fill；And make in solid loading bottle, obtain the spot check device that alarm can be detected.
Accompanying drawing explanation
Fig. 1 is the structural representation of the spot check device that the embodiment of the present invention 1 provides.
Fig. 2 is the response voltage-time curve figure during spot check device spot check flammable gas alarm of the embodiment of the present invention 1 offer.
Fig. 3 is the response voltage-time curve figure during spot check device spot check flammable gas alarm of the embodiment of the present invention 2 offer.
Fig. 4 is the response voltage-time curve figure during spot check device spot check flammable gas alarm of the embodiment of the present invention 3 offer.
Fig. 5 is the response voltage-time curve figure during spot check device spot check flammable gas alarm of the embodiment of the present invention 4 offer.
Fig. 6 is the response voltage-time curve figure during spot check device spot check flammable gas alarm of the embodiment of the present invention 5 offer.
Component symbol explanation
| Spot check device | 10； | Wide mouthed bottle | 12； |
| Spot check agent | 14； | Sponge | 16 |
Detailed description of the invention
Below by detailed description of the invention, technical scheme is described in further detail.
GD II Domestic combustible gas alarm used in example 1 below-5 be can normally use, without the alarm of zero drift phenomenon occurs；And, described alarm is in online, the state of real time operation.
Embodiment 1
Referring to Fig. 1, the present embodiment 1 provides a spot check device 10, and this spot check device 10 includes wide mouthed bottle 12 and is sealed in the spot check agent 14 in this wide mouthed bottle 12 and sponge 16, and wherein sponge 16 stacking is arranged on the upper portion door of described spot check agent 14.The lid that seals of this wide mouthed bottle 12 is fixed on the bottleneck of this wide mouthed bottle 12 by the way of spiral.
The preparation method of described spot check agent 14 is: weigh 3 grams of stearic acid, 1 gram of paraffin, several zeolites, pours in three mouthfuls of beakers, 20 milliliters of hexamethylene, 10 ml n-hexanes, 3 milliliters of water inject wherein, using heating in water bath, temperature controls at about 65 DEG C, is incubated to all dissolving；Measure 2 milliliters of water to add in beakers, adds 1 gram of NaOH, shake up to all dissolvings, then measure 10 milliliters of hexamethylene and pour beaker into, slowly pour in there-necked flask after mixing.Heat 5 minutes, stop heating, pour in wide mouthed bottle, after solidification, prepare described spot check agent and spot check device.Described spot check agent 14 is made up of 8% sodium stearate, 2% paraffin, 60% hexamethylene, 20% normal hexane and 10% water.
Above-mentioned spot check device 10 is placed near the air inlet of online GD II Domestic combustible gas alarm, described alarm is carried out spot check, within about 5 seconds, just hears described alarm equipment alarm.Above-mentioned spot check device and GD II Domestic combustible gas alarm are tested on WS-64 gas sensor tester, after voltage response peak value occurs, withdraws described spot check device, obtain response voltage-time curve as shown in Figure 2.As can be seen from Figure 2: response voltage when being about 0.7 volt, is alarm described in unused described spot check device spot check, described alarm when normal operating condition, air response magnitude of voltage in described alarm；When with alarm described in spot check device spot check, taking around 3 seconds, voltage just can reach about 3.7 volts from about 0.7 volt；After spot check device is withdrawn, within 3 minutes, respond the voltage about 0.7 volt when magnitude of voltage just can return to not use spot check device.
As can be seen here, the described spot check agent spot check time is short, is quick on the draw.The voltage response peak value of described spot check agent 14 3.7 volts, can be used to spot check part flammable gas alarm.During spot check, although the spot check gas that described spot check agent is volatilized has certain impact to described alarm, it can be had an impact in the short time, but within 3 minutes short periods, described alarm just can return to normal condition.
Embodiment 2
Weigh 3 grams of stearic acid, several zeolites, pour in three mouthfuls of beakers.Measuring 30 milliliters of ethanol, 10 ml n-hexanes, 10 milliliters of normal octanes, 3 milliliters of water inject wherein, use heating in water bath, and temperature controls at about 65 DEG C, are incubated to all dissolving；Measure 2 milliliters of water to add in beakers, adds 1 gram of NaOH, shake up to all dissolvings, then measure 10 milliliters of ethanol and pour beaker into, slowly pour in there-necked flask after mixing.Heat 4 minutes, pour in wide mouthed bottle with prepared spot check agent after stopping heating, obtain spot check device simultaneously.The component of described spot check agent is: 5.8% sodium stearate, 58.0% ethanol, 14.5% normal hexane, 14.5% normal octane and 7.2% water.
The structure using the spot check device of above-mentioned spot check agent is identical with the structure of the spot check device 10 that embodiment 1 provides.Described spot check device is placed near the air inlet of online GD II Domestic combustible gas alarm, described alarm is carried out spot check, within about 4 seconds, just hears described alarm equipment alarm.Described spot check device and GD II Domestic combustible gas alarm are tested on WS-64 gas sensor tester, after voltage response peak value occurs, withdraws described spot check device, obtain response voltage-time curve as shown in Figure 3.As can be seen from Figure 3: voltage response just can reach voltage response peak value about 3.5 volts from about 0.7 volt in about 20 seconds, responds slow；After spot check device is withdrawn, described alarm responds the voltage about 0.7 volt when magnitude of voltage just can return to not use spot check device within 3 minutes.
As can be seen here, the described spot check agent spot check time is short, is quick on the draw.The voltage response of described spot check agent is worth 3.5 volts, can be used to spot check existing part flammable gas alarm.Described alarm is after described spot check device spot check, although the spot check gas that spot check agent therein is volatilized has certain impact to described alarm, it can be had an impact in short time, but within 3 minutes short periods, described alarm just can return to normal operating condition.
Embodiment 3
Weigh 3 grams of stearic acid, several zeolites, pour in three mouthfuls of beakers.Measuring 20 milliliters of ethanol, 20 ml n-hexanes, 5 milliliters of water inject wherein, use heating in water bath, and temperature controls at about 65 DEG C, are incubated to all dissolving；Measure 3 milliliters of water to add in beakers, adds 1 gram of NaOH, shake up to all dissolvings, then measure 10 milliliters of ethanol and pour beaker into, slowly pour in there-necked flask after mixing.Heat 6 minutes, pour in mould with prepared spot check agent after stopping heating.The component of described spot check agent is: 6.5% sodium stearate, 49.1% ethanol, 32.8% normal hexane and 11.5% water.
The structure using the spot check device of above-mentioned spot check agent is identical with the structure of the spot check device 10 that embodiment 1 provides.Described spot check device is placed near the air inlet of online GD II Domestic combustible gas alarm, described alarm is carried out spot check, within about 4 seconds, just hears described alarm equipment alarm.Described spot check device and GD II Domestic combustible gas alarm are tested on WS-64 gas sensor tester, after voltage response peak value occurs, withdraws described spot check agent, obtain response voltage-time curve as shown in Figure 4.As can be seen from Figure 4: voltage response just can reach voltage response peak value about 4.5 volts from about 0.7 volt in about 8 seconds, after spot check device is withdrawn, described alarm responds the voltage about 0.7 volt when magnitude of voltage just can return to not use spot check device within 3 minutes.
As can be seen here, the described spot check agent spot check time is short, is quick on the draw.The voltage response of the spot check agent in described spot check device is worth 4.5 volts, can be used to spot check flammable gas alarm.Described alarm is after described spot check device spot check, although the spot check gas that spot check agent therein is volatilized has certain impact to described alarm, it can be had an impact in short time, but within 3 minutes short periods, described alarm just can return to normal operating condition.
Embodiment 4
Weighing 4 grams of stearic acid, 1 gram of paraffin, several zeolites, pour in three mouthfuls of beakers, 30 milliliters of analytical pure normal hexane, 5 milliliters of water inject wherein, use heating in water bath, and temperature controls at about 65 DEG C, are incubated to all dissolving；Measure 2 milliliters of water to add in beakers, adds 1 gram of NaOH, shake up to all dissolvings, then measure 10 ml n-hexanes and pour beaker into, slowly pour in there-necked flask after mixing.Heat 5 minutes, stop heating, pour in wide mouthed bottle, prepare spot check agent after solidification, obtain spot check device simultaneously.The component of described spot check agent is: 9.4% sodium stearate, 1.9% paraffin, 75.5% normal hexane and 13.2% water.
The structure using the spot check device of above-mentioned spot check agent is identical with the structure of the spot check device 10 that embodiment 1 provides.Described spot check device is placed near the air inlet of online GD II Domestic combustible gas alarm, described alarm is carried out spot check, within about 3 seconds, just hears described alarm equipment alarm.Described spot check device and GD II Domestic combustible gas alarm are tested on WS-64 gas sensor tester, after voltage response peak value occurs, withdraws described spot check agent, obtain response voltage-time curve as shown in Figure 5.As can be seen from Figure 5: voltage response just can reach about 5 volts from about 0.7 volt in about 6 seconds；After spot check device is withdrawn, described alarm responds the voltage about 0.7 volt when magnitude of voltage just can return to not use spot check device within 3 minutes.
As can be seen here, the described spot check agent spot check time is short, is quick on the draw.The voltage response of the spot check agent in described spot check device is worth 5 volts, can be used to the existing flammable gas alarm of spot check.Described alarm is after described spot check device spot check, although the spot check gas that spot check agent therein is volatilized has certain impact to described alarm, it can be had an impact in short time, but within 3 minutes short periods, described alarm just can return to normal operating condition.
Embodiment 5
Weighing 4 grams of stearic acid, 1 gram of paraffin, several zeolites, pour in three mouthfuls of beakers, 30 milliliters of analytical pure ether, 5 milliliters of water inject wherein, use heating in water bath, and temperature controls at about 65 DEG C, are incubated to all dissolving；Measure 2 milliliters of water to add in beakers, adds 1 gram of NaOH, shake up to all dissolvings, then measure 10 milliliters of ether and pour beaker into, slowly pour in there-necked flask after mixing.Heat 5 minutes, stop heating, pour in wide mouthed bottle, prepare spot check agent after solidification, obtain spot check device simultaneously.The component of described spot check agent is: 9.8% sodium stearate, 1.9% paraffin, 75.5% ether and 13.2% water.
The structure using the spot check device of above-mentioned spot check agent is identical with the structure of the spot check device 10 that embodiment 1 provides.Described spot check device is placed near the air inlet of online GD II Domestic combustible gas alarm, described alarm is carried out spot check, within about 3 seconds, just hears described alarm equipment alarm.Described spot check device and GD II Domestic combustible gas alarm are tested on WS-64 gas sensor tester, after voltage response peak value occurs, withdraws described spot check agent, obtain response voltage-time curve as shown in Figure 6.As can be seen from Figure 6: voltage response just can reach about 5 volts from about 0.7 volt in about 5 seconds；After spot check device is withdrawn, described alarm responds the voltage 0.7 volt when magnitude of voltage just can return to not use spot check device within 3 minutes.
As can be seen here, the described spot check agent spot check time is short, is quick on the draw.The voltage response peak value of the spot check agent in described spot check device 5 volts, can be used to the existing flammable gas alarm of spot check.Described flammable gas alarm is after described spot check device spot check, although the spot check gas that spot check agent therein is volatilized has certain impact to described alarm, it can be had an impact in short time, but within 3 minutes short periods, described alarm just can return to normal operating condition.
As can be seen here, spot check agent and spot check utensil that the embodiment of the present invention provides have the advantage that first, and produced by the volatile organic solvent in spot check agent, response value has good corresponding with methane, can substitute for methane and carries out spot check.Second, the spot check gas that described spot check agent is volatilized has certain impact, some can be had to affect described flammable gas alarm in the short time, but aging through electrified regulation after a while, and alarm can also return to normal condition, does not affect work.3rd, described spot check device arranges sponge by stacking in described spot check agent, and sponge can absorb the spot check agent liquefied at relatively high temperatures to avoid spot check agent to flow out described container, the loss of minimizing spot check agent when liquefaction；The spot check gas that sponge can also avoid described spot check agent to volatilize forms the performance of bigger drips flammable gas alarm；The gas that sponge can also make described spot check agent be volatilized uniformly escapes described container by sponge；Owing to described container is rigid container, being also not easy deformation even if being squeezed, thus avoid this spot check device to change gaseous volatilization amount because of the deformation of rigid container, described spot check device volatilization gas ratio is more uniform.Therefore, described spot check device is easier to control gaseous volatilization amount, accuracy compares high.4th, use the spot check utensil of described spot check agent to have feature easy to carry, need not change the state position etc. of flammable gas alarm, directly can be carried out detection, have easy to operate, respond the features such as sensitive, detection is quick.5th, described spot check agent and described spot check device are cheap, and material is easy to get, less pollution, it is possible in real time alarm is carried out spot check.
It addition, the manufacture method of the spot check agent of embodiment of the present invention offer adds water in the preparation, on the one hand slow down the volatilization of organic solvent, be conducive to preserving, on the other hand avoid described 3rd mixed liquor and solidify in flask, it is simple to have sufficient time fill；And make in solid loading bottle, just obtain the spot check device that alarm can be detected.Described manufacture method is fairly simple.
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit；Although being described in detail the present invention with reference to preferred embodiment, those of ordinary skill in the field are it is understood that still can modify to the detailed description of the invention of the present invention or portion of techniques feature is carried out equivalent；Without deviating from the spirit of technical solution of the present invention, it all should be contained in the middle of the technical scheme scope that the present invention is claimed.
Claims (9)
1. a spot check agent, for spot check flammable gas alarm, it is characterized in that, calculate by mass percentage, comprising: the organic solvent of the coagulator of 2%～8%, 76%～93% and the water of 5%～16%, described organic solvent uniformly mixes with water, and is wrapped in described coagulator, described organic solvent includes normal hexane or/and ether, and described coagulator includes sodium stearate.
Spot check agent the most according to claim 1, it is characterized in that, described organic solvent is normal hexane, or ether, or the combination in any of one or more in normal hexane and ether, ethanol, normal octane, hexamethylene, or ether and the combination in any of one or more in ethanol, normal octane, hexamethylene.
Spot check agent the most according to claim 1 and 2, it is characterized in that, described coagulator is the mixture of sodium stearate or sodium stearate and sodium hydroxide, and described organic solvent and the water of 5%～15% of the described coagulator, 79%～93% that include 2%～6% is calculated in described spot check agent by mass percentage.
Spot check agent the most according to claim 3, it is characterized in that, described organic solvent is the mixture of normal hexane and ethanol, and the mass percent that normal hexane is in described spot check agent is 20%～30%, and ethanol mass percent in described spot check agent is 49%～73%.
Spot check agent the most according to claim 1 and 2, it is characterized in that, it also includes the paraffin being dispersed in described coagulator, described coagulator is the mixture of sodium stearate or sodium stearate and sodium hydroxide, the described organic solvent of the paraffin of described coagulator, 0.5%～2%, 76%～90.5% that include 2%～6%, and the water of 7%～16% are calculated in described spot check agent by mass percentage.
6. a spot check device, for spot check flammable gas alarm, it is characterised in that it includes having the container sealing lid and the spot check agent as described in any one of claim 1-5, and described spot check agent is placed in described container.
Spot check device the most according to claim 6, it is characterised in that it also includes sponge, sponge is arranged on the upper surface of described spot check agent, is placed in described container.
8. a manufacture method for spot check agent, this spot check agent is used for spot check flammable gas alarm, including:
(1) 1～6 gram of stearic acid is dissolved in 5～40 milliliter of first organic solvent obtains the first mixed liquor, 5～20 milliliter of second organic solvent, 0.1～1 gram of sodium hydroxide and 3～15 milliliters of water are mixed to get the second mixed liquor, wherein, described first organic solvent and described second organic solvent include normal hexane or/and ether；
(2) mix described first mixed liquor and described second mixed liquor, uniformly mix, and heat 5～20 minutes at 60～70 degree, obtain the 3rd mixed liquor；
(3) described 3rd mixed liquor being stood, cooled down, after cooling, solidification obtains described spot check agent.
Manufacture method the most according to claim 8, it is characterized in that, described first organic solvent and described second organic solvent are normal hexane, or ether, or the combination in any of one or more in normal hexane and ether, ethanol, normal octane, hexamethylene, or ether and the combination in any of one or more in ethanol, normal octane, hexamethylene.
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| JP5186319B2 (en) * | 2008-09-18 | 2013-04-17 | 大晴産業株式会社 | Alcohol gas discharger |
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| XJ2型便携式智能甲烷检测报警器的研制;王卫军;《矿业安全与环保》;20050630;第32卷;第20-22页 * |
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