CN204360659U - The mensuration teaching demonstration device of flammable liquid flash-point and burning-point - Google Patents
The mensuration teaching demonstration device of flammable liquid flash-point and burning-point Download PDFInfo
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- CN204360659U CN204360659U CN201520026935.7U CN201520026935U CN204360659U CN 204360659 U CN204360659 U CN 204360659U CN 201520026935 U CN201520026935 U CN 201520026935U CN 204360659 U CN204360659 U CN 204360659U
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Abstract
The mensuration teaching demonstration device of flammable liquid flash-point and burning-point, the utility model comprise a middle its central band groove base (1), one be arranged on heating arrangement (2) in base groove, one be placed on crucible (3) on base groove, one cover on metal cap (4) on base groove, one be positioned at base side insert metal cap (4) lighter (5), one be positioned at base opposite side and supported by thermometer support (7), and by being inserted into the thermometer (6) in metal cap (4).The beneficial effects of the utility model are, the utility model has demonstrating visual, lively, simple and reliable for structure, easy to operate advantage.
Description
Technical field
The utility model belongs to technical field of teaching instruments, especially the assay device structures of flammable liquid flash-point and burning-point in fire-fighting teaching demonstration device.
Background technology
When fluid temperature is lower, because evaporating temperature is low, velocity of evaporation is slow, and the vapour molecule concentration that ullage is formed is smaller, and may be less than lower explosive limit, the mixed gas that now vapour molecule and air are formed runs into burning things which may cause a fire disaster and can not be lighted.Along with the continuous rising of temperature, vapour molecule concentration increases, when vapour molecule concentration increases to lower explosive limit time, the mixed gas that the saturated vapor of flammable liquid and air are formed runs into burning things which may cause a fire disaster can there is the phenomenon that namely a sudden strain of a muscle extinguish, and this one dodges the phenomenon that deflagrates of namely going out is called flash burn.At the specified experimental conditions, corresponding during liquid surface generation flash burn minimum temperature is called the flash-point of this liquid.Under flash temperature, can only there is flash burn and can not occur sustained combustion in liquid.This is because under flash temperature, the velocity of evaporation of flammable liquid is less than its burning rate, and the steam of ullage burns up rear steam and has little time to supplement, and causes flame self-extinguish.
Continue raised temperature, ullage vapor concentration increase, when the potpourri that vapour molecule and air are formed run into burning things which may cause a fire disaster can burn and the duration is no less than 5 seconds time, now liquid is lighted, and the temperature corresponding to it is called the burning-point of this liquid.
From fire-fighting viewpoint, flash burn is the warning of fire, the prelude that catches fire.Grasp this combustion phenomena of flash burn, just can fire preventing occur or reduce the harm that causes of fire well.Flash-point is the important parameter weighing combustible liquid fire danger, is the foundation of liquid flammability classification.
Existingly manually open glass flammable liquid flash-point and determination of ignition point instrumentation relative complex, the aridity of environment for use, ventilation, anticorrosion are had higher requirements, simultaneously, note electricity consumption, use gas safety, equipment failure needs professional to overhaul, and is not easy to the shortcomings such as learner carries out, keeps in repair, safeguards, use.
Summary of the invention
The purpose of this utility model is less demanding to data for replication experiment, is convenient to the feature that learner observes and provides a kind of easy to operate, save time, and plant maintenance, use cost are low, the flash-point easily observed and the experimental demonstration device of determination of ignition point.The utility model comprises base, and its structural feature is base to be placed spirit lamp and crucible, and lighter and thermometer folder are fixed on base both sides, install simple, easy to operate; Iron sheet cover (above reserving lighter mounting hole) in crucible upper cover, is conducive to liquid vapour and assembles and observe flash burn phenomenon.
The mensuration teaching demonstration device of flammable liquid flash-point and burning-point, the utility model feature is, comprise the base of a middle its central band groove, one be arranged on heating arrangement in base groove, one be placed on crucible on base groove, one cover on metal cap on base groove, one be positioned at base side insert metal cap lighter, one be positioned at base opposite side and supported by thermometer support, and by being inserted into the thermometer in metal cap.
The utility model heating arrangement is spirit lamp.
The utility model heating arrangement also can be electric furnace, and its electric furnace adopts electrical equipment control.
The beneficial effects of the utility model are, the utility model has demonstrating visual, lively, simple and reliable for structure, easy to operate advantage.
Accompanying drawing explanation
Fig. 1 is the utility model one example structure schematic diagram.
Embodiment
The mensuration teaching demonstration device of flammable liquid flash-point and burning-point, the utility model feature is, base 1, one heating arrangement 2, be arranged in base groove 3, one, the crucible be placed on the base groove metal cap 4, covered on base groove comprising a middle its central band groove is positioned at the lighter 5, inserting metal cap 4 in base side and is positioned at base opposite side and is supported by thermometer support 7, and by being inserted into the thermometer 6 in metal cap 4.
The utility model heating arrangement 2 is spirit lamp.
The utility model heating arrangement 2 also can be electric furnace, and its electric furnace adopts electrical equipment control.
Claims (3)
1. the mensuration teaching demonstration device of flammable liquid flash-point and burning-point, it is characterized in that, comprise the base (1) of a middle its central band groove, one be arranged on heating arrangement (2) in base groove, one be placed on crucible (3) on base groove, one cover on metal cap (4) on base groove, one be positioned at base side insert metal cap (4) lighter (5), one be positioned at base opposite side and supported by thermometer support (7), and by being inserted into the thermometer (6) in metal cap (4).
2. the mensuration teaching demonstration device of flammable liquid flash-point according to claim 1 and burning-point, is characterized in that, heating arrangement (2) is spirit lamp.
3. the mensuration teaching demonstration device of flammable liquid flash-point according to claim 1 and burning-point, is characterized in that, heating arrangement (2) is electric furnace, and its electric furnace adopts electrical equipment control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520026935.7U CN204360659U (en) | 2015-01-15 | 2015-01-15 | The mensuration teaching demonstration device of flammable liquid flash-point and burning-point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520026935.7U CN204360659U (en) | 2015-01-15 | 2015-01-15 | The mensuration teaching demonstration device of flammable liquid flash-point and burning-point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204360659U true CN204360659U (en) | 2015-05-27 |
Family
ID=53262115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520026935.7U Expired - Fee Related CN204360659U (en) | 2015-01-15 | 2015-01-15 | The mensuration teaching demonstration device of flammable liquid flash-point and burning-point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204360659U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108236973A (en) * | 2016-12-23 | 2018-07-03 | 卡梅德生物科技（天津）有限公司 | A kind of experiment alcohol lamp support |
| CN113063821A (en) * | 2021-04-08 | 2021-07-02 | 安徽华瑞检测技术有限公司 | Device for detecting flash point of oil product |
-
2015
- 2015-01-15 CN CN201520026935.7U patent/CN204360659U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108236973A (en) * | 2016-12-23 | 2018-07-03 | 卡梅德生物科技（天津）有限公司 | A kind of experiment alcohol lamp support |
| CN113063821A (en) * | 2021-04-08 | 2021-07-02 | 安徽华瑞检测技术有限公司 | Device for detecting flash point of oil product |
| CN113063821B (en) * | 2021-04-08 | 2023-09-19 | 安徽华瑞检测技术有限公司 | Oil flash point detects uses device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20160115 |
|
| EXPY | Termination of patent right or utility model |