CN1438480A - Portable direct-reading type power-free hydrogen-sulfide gas detector and preparation of indicating matter - Google Patents
Portable direct-reading type power-free hydrogen-sulfide gas detector and preparation of indicating matter Download PDFInfo
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- CN1438480A CN1438480A CN 02103691 CN02103691A CN1438480A CN 1438480 A CN1438480 A CN 1438480A CN 02103691 CN02103691 CN 02103691 CN 02103691 A CN02103691 A CN 02103691A CN 1438480 A CN1438480 A CN 1438480A
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- gas detector
- sulfide gas
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Abstract
The testing assembly comprises the glass tube, the indicating material in the glass tube and the diffusion control film on two ends of the glass tube. The indication scale for measuring value constitutes the indication window. The testing assembly and the scale are fixed on the carrier with badge shape. The indicating material comprises main agent, the inter surface modifying addition and ceramics powder in 80-120 mesh. One or several of lead acetate, lead nitrate and silver nitrate constitute the main agent. The intersurface modifying addition is soluble barium salt. The weight of the main agent is 1%-10% of the weight of the admixture. The invention provides the features of powerless, high sensitivity, good accuracy, low cost and convenience.
Description
Technical field
The present invention relates to a kind of monitoring poisonous gas device and detect indicator substance and preparation method, belong to the labour protection field.
Background technology
Along with the increase of socio-economic activity, following characteristics have appearred in work situation: the utilization of (1) new technology has brought new pollution, and the type of pollution and scope are increased; (2) sealing or semi-enclosed work situation increase, the deterioration that brings work situation; (3) She Hui progress, laborer more and more payes attention to work situation, requires the work situation quality to improve, even very little air pollution is in the past also paid much attention to now.Petroleum industry and petrochemical industry are the main place of poisonous, noxious gas emission and pollution, and it not only jeopardizes workman's safety, also contaminated environment.Want to effectively prevent harmful gas pollution and harm, importantly monitor poisonous, the harmful gas concentration in each place accurately, all sidedly and individual's murder by poisoning degree.Petroleum Production has dispersion, multiple spot, inflammable, explosive characteristics, adopt traditional dynamic sampling thief sampling, take back the lab analysis method for measuring again, though it is relatively accurately, reliable, but monitor workaday each place 8 hour concentration value, monitoring facilities complexity, consuming time, and expense height.So traditional detection method be unfavorable for having the whole day of oil and chemical industry characteristics, continuously, the monitoring of multiple spot, particularly be not suitable for inflammable, explosive place.
Summary of the invention
The present invention can provide portable direct-reading type power-free hydrogen-sulfide gas detector and the indicator substance and the preparation method of a kind of direct-reading, unpowered, highly sensitive, characteristics such as precision is good, inexpensive, convenient.
Portable direct-reading type power-free hydrogen-sulfide gas detector of the present invention is characterized in that: form detection components by indicator substance in glass tube, the glass tube and glass tube two ends control diffusion barrier; Form indicating window by the indicator scale of measuring detected value; Described detection components and indicating window are fixed on the badge shape carrier.
Aforesaid detecting device is characterized in that: described glass tube length is selected 30-50mm, and interior grade 2.0-3.0mm, outer grade 4.0-6.0mm are best.
Aforesaid detecting device is characterized in that: described glass tube two ends control diffusion barrier can adopt polyester film, and its thickness is 1mm the best.
The indicator substance composition of portable direct-reading type power-free hydrogen-sulfide gas detector of the present invention is characterized in that: this indicator substance is by host, interface improver and the pure α-Al of 80-120 purpose
2O
3The type ceramic powder is formed; Host is selected from one or two or more kinds the potpourri in lead acetate, plumbi nitras, the silver nitrate, and the interface improver is the soluble barium salt; The composition by weight that host accounts for described potpourri is that the composition by weight that 1%-10%, interface improver account for described potpourri is that 0.1%-1%, surplus are pure α-Al
2O
3The type ceramic powder.
The indicator substance composition of aforesaid a kind of portable direct-reading type power-free hydrogen-sulfide gas detector is characterized in that: host can mix by mole proportionings such as various components by two kinds in lead acetate, plumbi nitras, the silver nitrate or three kinds.
The indicator substance composition of aforesaid a kind of portable direct-reading type power-free hydrogen-sulfide gas detector is characterized in that: described soluble barium salt can select barium chloride or barium acetate for use.
Aforesaid indicator substance preparation method is characterized in that: will grind to the pure α-Al of 80-120 purpose
2O
3After the screening of type pottery, calcination is 2 hours in 600 ℃ of muffle furnaces, and after the cooling, it is stand-by to bottle, and takes by weighing host interface improver and ceramic powder in proportion; Host, interface improver are mixed and add an amount of dissolved in distilled water, pour into again in the ceramic powder, stir evenly the back oven dry.
The present invention compares with traditional pick-up unit, has following advantage:
The unpowered detector of direct-reading sulfuretted hydrogen have the power of need not, highly sensitive, precision good, characteristics such as inexpensive, convenient, concrete characteristics and technical indicator are as follows:
(1) sensing range: 1.5-75mg/m
3(status of criterion);
(2) sensitivity: 1.5mg/m
3
(3) detect relative standard deviation less than 10%;
(4) detect relative average error: less than 10%;
(5) with the related coefficient of standard method: greater than 90%;
(6) need not power;
(7) deixis formula (two-way indication);
(8) be applicable to working environment;
Description of drawings
Fig. 1 is the structural representation of detecting device of the present invention;
Fig. 2 is that the side-looking structure of detecting device of the present invention is implemented illustration.
Embodiment
The detection components of badge shape, direct-reading, unpowered hydrogen sulfide detector is a tubulose, indicator substance is housed in pipe, this material is Powdered, in the time of in being placed on a hydrogen sulfide containing gaseous environment, sulfuretted hydrogen is spread in pipe by controlling diaphragm by the gas phase main body, after entering pipe, react rapidly with the material thin layer of carrier surface absorption that (reaction constant is very big, and special efficacy, select unique), after the reaction, indicator substance is Dark grey.Owing to be swift in response, between reaction and unreacted matters, can form clear, a very large interface of contrast.Because of the indicator substance layer is very thin, and evenly, be always zero in the concentration of sulfuretted hydrogen at the interface.Between gas phase main body and variable color interface, exist a sulfureted hydrogen gas concentration poor (being expulsive force) so all the time, hydrogen sulfide gas is spread in pipe, because variable color length is directly proportional with the amount of the hydrogen sulfide gas that imports into, and the amount of importing into of sulfuretted hydrogen and main body concentration of hydrogen sulfide, passing time are relevant.Thus, can record the degree of depth (C) of sulfuretted hydrogen in the gas phase main body according to variable color length (L), passing time (t).Direct-reading type power-free hydrogen-sulfide gas detector is a kind of individual monitoring instrument that detects concentration of hydrogen sulfide in the air ambient.
1. the selection of indicator and prescription
The developer material should be and the sulfuretted hydrogen reaction solution in the assembly, and reaction velocity is fast, variable color obviously, evenly.
The existence form of lead ion and barium ion decision reaction velocity and the degree that is uniformly dispersed on carrier, and these two just in time influence variable color interface consistance and variable color homogeneity.The effect of organic lead is best: the interface is clear, variable color is even.
2. carrier is selected
Selecting the low specific surface area pottery in our instrument is carrier.Method for making: with pure α-Al
2O
3The type pottery grinds the order to 80-120, and after the screening, calcination is 2 hours in 600 ℃ of muffle furnaces, and after the cooling, it is stand-by to bottle.
3. the diameter of detection components and length are selected
Select the glass tube of internal diameter 2.0mm, external diameter 4.0mm.Length component also influences variable color length, but not obvious, considers and the bilateral index from sensing range, has selected 30mm.
4. the influence of diffusion control film
Select a kind of polyester film (nearly 1mm is thick),,, reduce air speed error in the hope of increasing resistance as the diffusion control film.
The assembling of detection components.
At first the diffusion control film is adhered to a side of glass tube with the elite bonding agent of getting, takes by weighing a certain amount of indicator then and slowly pack in the pipe, smooth after, bonding opposite side diffusion control film is placed on oven dry under the infrared lamp, after the taking-up, sealing is preserved.
Provide several optimum examples below:
(1) preparation of indicator:
Embodiment 1:
With pure α-Al
2O
3The type pottery grinds the order to 80-120, and after the screening, calcination is 2 hours in 600 ℃ of muffle furnaces, and after the cooling, it is stand-by to bottle.By 5% of mixture total weight amount take by weighing by plumbi nitras and lead acetate by etc. the mole proportioning mix the host of forming.Take by weighing the interfacial agents barium chloride by 0.5% of mixture total weight amount.Above-mentioned host and interfacial agents are mixed, and after adding a small amount of dissolved in distilled water, pour the pure α-Al that takes by weighing by 94.5% of mixture total weight amount into
2O
3In the type ceramic powder, after stirring evenly, oven dry, stand-by in the closed container of packing into.
Embodiment 2:
By 8% of mixture total weight amount take by weighing lead acetate and silver nitrate by etc. the mole proportioning mix the host of forming, take by weighing the interfacial agents barium acetate by 0.5% of mixture total weight amount, take by weighing pure α-Al by 91.5% of mixture total weight amount
2O
3The type ceramic powder.Preparation method and step are the same.
Embodiment 3:
Take by weighing the host lead acetate by 3% of mixture total weight amount, take by weighing the interfacial agents barium chloride, take by weighing pure α-Al by 96.2% of mixture total weight amount by 0.8% of mixture total weight amount
2O
3The type ceramic powder.Preparation method and step are the same.
Embodiment 4:
By 9% of mixture total weight amount take by weighing by lead acetate, plumbi nitras and silver nitrate by etc. the mole proportioning mix the host form, take by weighing interface improver barium acetate by 0.3% of mixture total weight amount, take by weighing pure α-Al by 90.7% of mixture total weight amount
2O
3The type ceramic powder.Preparation method and step are the same.
(2) preparation of glass tube
Select the glass tube that internal diameter is even, transparency is good, specification is ID2.0 * OD4.mm, and intercepting is long for the 30mm plurality of sections, and is with the both sides hacking, stand-by with sand paper.
(3) preparation of diffusion control film
After polyester film (imitating air filter paper in 60 types that Jiangsu Sujing Group Co., Suzhou City produces) drying, strike out the circular membrane that external diameter is 4.0mm with mould.
(4) shell
Shell is a plastic shaping, is made up of window and indicator scale.
(5) assembling of detection components.
At first the diffusion control film is adhered to a side of glass tube with bonding agent, takes by weighing a certain amount of indicator then and slowly pack in the pipe, smooth after, bonding opposite side diffusion control film is placed on oven dry under the infrared lamp, packing into after the taking-up has in the scale shell.
In the accompanying drawing: the 1st, diffusion hole, the 2nd, the glass tube of detection components, the 3rd, index scale, the 4th, indication section, the 5th, badge shape carrier, the 6th, the clip of badge.Described glass tube can be embedded in the groove of badge shape carrier.Described clip plays fixedly rifle survey device, is convenient to human body and carries.
Claims (7)
1. a portable direct-reading type power-free hydrogen-sulfide gas detector is characterized in that: form detection components by indicator substance in glass tube, the glass tube and glass tube two ends control diffusion barrier; Form indicating window by the indicator scale of measuring detected value; Described detection components and indicating window are fixed on the badge shape carrier.
2. a kind of portable direct-reading type power-free hydrogen-sulfide gas detector as claimed in claim 1 is characterized in that: described glass tube length is selected 30-50mm, and interior grade 2.0-3.0mm, outer grade 4.0-6.0mm are best.
3. a kind of portable direct-reading type power-free hydrogen-sulfide gas detector as claimed in claim 1 is characterized in that: described glass tube two ends control diffusion barrier can adopt polyester film, and its thickness is 1mm the best.
4. the indicator substance composition of a portable direct-reading type power-free hydrogen-sulfide gas detector, it is characterized in that: this indicator substance is by host, interface improver and the pure α-Al of 80-120 purpose
2O
3The type ceramic powder is formed; Host is selected from one or two or more kinds the potpourri in lead acetate, plumbi nitras, the silver nitrate, and the interface improver is the soluble barium salt; The composition by weight that host accounts for described potpourri is that the composition by weight that 1%-10%, interface improver account for described potpourri is that 0.1%-1%, surplus are pure α-Al
2O
3The type ceramic powder.
5. the indicator substance composition of a kind of portable direct-reading type power-free hydrogen-sulfide gas detector as claimed in claim 4, it is characterized in that: host can mix by mole proportionings such as various components by two kinds in lead acetate, plumbi nitras, the silver nitrate or three kinds.
6. the indicator substance composition of a kind of portable direct-reading type power-free hydrogen-sulfide gas detector as claimed in claim 4, it is characterized in that: described soluble barium salt can select barium chloride or barium acetate for use.
7. the indicator substance preparation method of a portable direct-reading type power-free hydrogen-sulfide gas detector is characterized in that: will grind to the pure α-Al of 80-120 purpose
2O
3After the screening of type pottery, calcination is 2 hours in 600 ℃ of muffle furnaces, and after the cooling, it is stand-by to bottle, and takes by weighing host, interface improver and ceramic powder in proportion; Host, interface improver are mixed and add an amount of dissolved in distilled water, pour into again in the described ceramic powder, stir evenly the back oven dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021036918A CN1187602C (en) | 2002-02-10 | 2002-02-10 | Portable direct-reading type power-free hydrogen-sulfide gas detector and preparation of indicating matter |
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|---|---|---|---|
| CNB021036918A CN1187602C (en) | 2002-02-10 | 2002-02-10 | Portable direct-reading type power-free hydrogen-sulfide gas detector and preparation of indicating matter |
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| Publication Number | Publication Date |
|---|---|
| CN1438480A true CN1438480A (en) | 2003-08-27 |
| CN1187602C CN1187602C (en) | 2005-02-02 |
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|---|---|---|---|
| CNB021036918A Expired - Fee Related CN1187602C (en) | 2002-02-10 | 2002-02-10 | Portable direct-reading type power-free hydrogen-sulfide gas detector and preparation of indicating matter |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005059529A1 (en) * | 2003-12-18 | 2005-06-30 | Inco Limited | Hydrogen sulfide monitoring system |
| CN102507887A (en) * | 2011-10-14 | 2012-06-20 | 西南石油大学 | Method for determining hydrogen sulfide content in black formation water of high-sulfur gas field |
| CN101769896B (en) * | 2008-12-26 | 2013-10-09 | 中国科学院大连化学物理研究所 | Volatility amine sensor |
| CN105466973A (en) * | 2016-01-13 | 2016-04-06 | 孟玲 | Safety guardrail with quick detection function |
| CN105466974A (en) * | 2016-01-13 | 2016-04-06 | 黎海纤 | High voltage power supply capable of achieving rapid gas recognition function |
| CN105513810A (en) * | 2016-01-13 | 2016-04-20 | 肖锐 | Oil tank with high-repetitiveness detection function of refueling station |
| CN105513811A (en) * | 2016-01-13 | 2016-04-20 | 周丽娜 | Camping tent with high-repetitiveness gas detection function |
| CN105529191A (en) * | 2016-01-13 | 2016-04-27 | 张志华 | High-conversion-efficiency solar cell based vehicle license plate recognition device of parking lot |
| CN105675662A (en) * | 2016-01-13 | 2016-06-15 | 蔡权 | Building roof decorative material based on self-power detection |
| CN105673377A (en) * | 2016-01-13 | 2016-06-15 | 吴本刚 | Metering refueling pump based on high-efficiency solar cell |
| CN105674192A (en) * | 2016-01-13 | 2016-06-15 | 蔡雄 | Solar street lamp with high-sensitivity detecting function |
| CN105699436A (en) * | 2016-01-13 | 2016-06-22 | 钟林超 | Exhaust gas detection device based on solar cell high in conversion rate |
| CN105702471A (en) * | 2016-01-13 | 2016-06-22 | 杨炳 | Greenhouse based on self-energized detection |
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2002
- 2002-02-10 CN CNB021036918A patent/CN1187602C/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005059529A1 (en) * | 2003-12-18 | 2005-06-30 | Inco Limited | Hydrogen sulfide monitoring system |
| AU2004298634B2 (en) * | 2003-12-18 | 2007-01-18 | Inco Limited | Hydrogen sulfide monitoring system |
| CN1777803B (en) * | 2003-12-18 | 2010-05-26 | 英科有限公司 | Hydrogen sulfide monitoring system |
| CN101769896B (en) * | 2008-12-26 | 2013-10-09 | 中国科学院大连化学物理研究所 | Volatility amine sensor |
| CN102507887A (en) * | 2011-10-14 | 2012-06-20 | 西南石油大学 | Method for determining hydrogen sulfide content in black formation water of high-sulfur gas field |
| CN105513811A (en) * | 2016-01-13 | 2016-04-20 | 周丽娜 | Camping tent with high-repetitiveness gas detection function |
| CN105466974A (en) * | 2016-01-13 | 2016-04-06 | 黎海纤 | High voltage power supply capable of achieving rapid gas recognition function |
| CN105513810A (en) * | 2016-01-13 | 2016-04-20 | 肖锐 | Oil tank with high-repetitiveness detection function of refueling station |
| CN105466973A (en) * | 2016-01-13 | 2016-04-06 | 孟玲 | Safety guardrail with quick detection function |
| CN105529191A (en) * | 2016-01-13 | 2016-04-27 | 张志华 | High-conversion-efficiency solar cell based vehicle license plate recognition device of parking lot |
| CN105675662A (en) * | 2016-01-13 | 2016-06-15 | 蔡权 | Building roof decorative material based on self-power detection |
| CN105673377A (en) * | 2016-01-13 | 2016-06-15 | 吴本刚 | Metering refueling pump based on high-efficiency solar cell |
| CN105674192A (en) * | 2016-01-13 | 2016-06-15 | 蔡雄 | Solar street lamp with high-sensitivity detecting function |
| CN105699436A (en) * | 2016-01-13 | 2016-06-22 | 钟林超 | Exhaust gas detection device based on solar cell high in conversion rate |
| CN105702471A (en) * | 2016-01-13 | 2016-06-22 | 杨炳 | Greenhouse based on self-energized detection |
| CN105466973B (en) * | 2016-01-13 | 2017-12-15 | 江山海维科技有限公司 | A kind of safety barrier with quick detection function |
| CN105466974B (en) * | 2016-01-13 | 2018-01-30 | 李光艺 | A kind of high voltage power supply that can realize fast gas identification function |
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