CN101995419A - Device for testing air phase combustion and explosion characteristics of equipment under working conditions - Google Patents
Device for testing air phase combustion and explosion characteristics of equipment under working conditions Download PDFInfo
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- CN101995419A CN101995419A CN2009101629931A CN200910162993A CN101995419A CN 101995419 A CN101995419 A CN 101995419A CN 2009101629931 A CN2009101629931 A CN 2009101629931A CN 200910162993 A CN200910162993 A CN 200910162993A CN 101995419 A CN101995419 A CN 101995419A
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- autoclave
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 238000004880 explosion Methods 0.000 title abstract description 11
- 238000002485 combustion reaction Methods 0.000 title abstract description 8
- 239000012071 phase Substances 0.000 claims abstract description 80
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000001301 oxygen Substances 0.000 claims abstract description 28
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 28
- 239000007791 liquid phase Substances 0.000 claims abstract description 27
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 80
- 239000002360 explosive Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 10
- 210000003205 muscle Anatomy 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 abstract 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a device for testing air phase combustion and explosion characteristics of equipment under working conditions, which comprises an autoclave, an ignition device and a controller. The autoclave further comprises an autoclave body and an autoclave cover; and the autoclave body further comprises a high-pressure container, a stirrer, a drive device, an electric heating jacket, a detachable pressure sensor and a thermometer. The device for testing the air phase combustion and explosion characteristics of the equipment under working conditions in the invention can completely simulate the working conditions to judge the air phase combustion and explosion danger of the equipment under the working conditions and can directly simulate the equipment temperature, liquid phase composition, air phase pressure and oxygen environment under the working conditions. The device in the invention can be used for testing the limited oxygen content that triggers air phase explosion at the temperature and under the pressure required by the working conditions to provide a basis for oxygen content control. The device in the invention also can be used for testing the highest air phase oxygen content under the working conditions and the lowest explosion temperature under the pressure so as to provide a basis for temperature control.
Description
Technical field
The present invention relates to a kind of gas-phase combustion blast proving installation technical field, particularly a kind of device of testing equipment gas phase explosive characteristic under the working condition.
Background technology
In chemical process, equipment such as some storage tanks based on liquid phase, reactor or tower are because liquid phase organism volatilization air inlet phase with the oxygen mix in the gas phase, causes the gas phase existence necessarily to fire danger.In chemical industry and the petrochemical production process, inflammable gas adopts closed container or pipeline to store usually or carries.Because the effect of suffering restraints, the gas burst meeting produces higher pressure and pressure climbing speed, to such an extent as to cause casualties and property loss.And in container and apparatus system that pipeline is connected, because pressure accumulated effect and subsequent explosion, the consequence of container conduit system gas explosion accident is more serious, usually can cause catastrophic consequence.Obtain equipment gas phase blast characteristics parameter, predict device gas phase bursting strength is for datonation-inhibition, the flame proof of equipment with put out quick-fried Safety Design and have great importance.
At present, the device that is used for the explosion test of equipment gas phase both at home and abroad is different because of the laboratory, and function ratio is more single, and cost is all than higher.Because the wall effect of equipment gas phase vessel or pipeline, experimental result and actual conditions difference are bigger.Domestic explosion test relates to lessly for the equipment gas phase, does not also have pertinent literature report at present.
In the present prior art, also be not exclusively used in the proving installation that the testing apparatus gas phase fires.The gas phase possible pressure of equipment such as some storage tanks based on liquid phase, reactor or tower is not a normal pressure, or is in oxygen enrichment or oxygen deprivation state, and can't judge the danger that gas phase fires this moment with flash-point.If with the device of surveying explosion limits, then want earlier the composition of checkout equipment gas phase, can bring problems such as certain test inconvenience and test result are inaccurate again.
Summary of the invention
Technical matters solved by the invention is, a kind of device of testing equipment gas phase explosive characteristic under the working condition is provided, the temperature of equipment, the composition of liquid phase, the pressure and the oxygen environment of gas phase under can the direct modeling working condition, by the effluve igniting, judge that the gas phase of equipment under the working condition fires danger.
The alleged operating mode (working conditions) of the present invention is meant: the working condition of equipment.I.e. running status under various load conditions.As: the running status of engine when specific fuel consumption is minimum claims " efficient routine "; Running status when the load overrate claims " overload operating mode "; Internal combustion engine operation conditions at a time is called for short operating mode, represents with the useful power and the speed of crankshaft of this moment internal combustion engine output.Speed of crankshaft is internal-combustion engine rotational speed.
For solving the problems of the technologies described above, the invention provides a kind of device of testing equipment gas phase explosive characteristic under the working condition, comprising: autoclave, portfire and controller.
Described autoclave further can comprise autoclave kettle and kettle cover, and described autoclave kettle further comprises: high pressure vessel, stirrer, gearing, electrical heating chuck, detachable pressure transducer and thermometer.
Described portfire may further include igniter head, is used to adopt the mode of effluve to light a fire.
Described autoclave can be used for simulated condition temperature, pressure, liquid phase composition and gas phase oxygen content.
Described controller preferably links to each other with portfire, is used for controlling described portfire and adopts the mode of effluve to light a fire at gaseous environment.
Described controller preferably links to each other with described detachable pressure transducer; Described detachable pressure transducer further comprises precision pressure sensor and vacuum meter; Described precision pressure sensor is used for sensed pressure value variation when gaseous environment is lighted a fire, and sends the variation of sensed pressure value to controller; Described controller, the sensed pressure value that is used for transmitting according to precision pressure sensor change judgement and have or not the generation sudden strain of a muscle quick-fried when gaseous environment is lighted a fire.
Described thermometer may further include monitoring liquid thermometer and monitoring gas phase temperature meter.
Described device may further include gaseous environment and liquid phase environment in use in the autoclave kettle; Described portfire further comprises igniter head; Described igniter head is arranged in gaseous environment, apart from kettle cover 5～15cm place; Described kettle cover links to each other with controller, and further comprises kettle cover heating arrangement and kettle cover attemperator, is used to control the temperature of gaseous environment in the described autoclave kettle.
Described detachable pressure transducer may further include precision pressure sensor and vacuum meter; Described precision pressure sensor, its test pressure can be accurate to 1Kpa; Described device is when atmospheric pressure state uses, and detachable pressure transducer is a precision pressure sensor; When described device used at the state that vacuumizes, detachable pressure transducer was used vacuum meter instead, and described vacuum meter vacuum tightness can be accurate to 0.1KPa.
Described device can utilize vacuum pump that described autoclave is extracted into more than the vacuum tightness 100KPa in use; Utilize negative pressure inhalant liquid phase materials to form liquid phase environment; Add and specify oxygen content gas to working condition pressure to form gaseous environment; Utilize described electrical heating chuck that described liquid phase environment is heated to assigned temperature, utilize the kettle cover heating arrangement that described gaseous environment is heated to the temperature identical with liquid phase environment, and maintenance still internal pressure is a working condition pressure; Stirred 3-5 minute, rotating speed is 180～220 rev/mins, is used to promote vapor liquid equilibrium; Stirring stops back 3～30 minutes, utilizes the igniting of described portfire effluve, changes non-vanishingly if controller perceives force value, shows that then gas phase occurs dodging quick-fried, and under this working condition, when the appearance point burning things which may cause a fire disaster, equipment exists and fires danger; If controller perceives force value and is changed to zero, show then to occur dodging quick-fried in the gas phase that equipment does not exist and fires danger under this working condition.
The present invention tests the device of equipment gas phase explosive characteristic under the working condition, and the simulated condition condition judges that the gas phase of equipment under the working condition fires danger fully.Quick-fried limit oxygen content takes place to dodge in the gas phase under working temperature and the pressure of can be used to apparatus of the present invention device test, thereby provides foundation for Control for Oxygen Content.Also can test the highest gas phase oxygen content of operating mode and the quick-fried temperature of minimum sudden strain of a muscle under the pressure, thereby provide foundation for temperature control.
Description of drawings
Fig. 1 is the schematic representation of apparatus of equipment gas phase explosive characteristic under the described test working condition of the embodiment of the invention.
Embodiment
As shown in Figure 1, be the schematic representation of apparatus of equipment gas phase explosive characteristic under the described test working condition of the embodiment of the invention.Wherein, each Reference numeral is: 1, bottom insert canal, 2, gas phase injection port, 3, stirrer, 4, electrical heating chuck (being the heat tracing layer), 5, monitoring gas phase temperature meter, 6, the monitoring liquid thermometer, 7, detachable pressure transducer (can be precision pressure sensor or vacuum meter), 8, igniter head.
In one embodiment of this invention, the device of equipment gas phase explosive characteristic mainly is made up of autoclave kettle, portfire and controller under the described test working condition.The autoclave kettle mainly is made up of high pressure vessel, stirrer 3 and gearing, electrical heating chuck 4, precision pressure sensor 7, thermometer 5,6.Portfire is utilized the effluve igniting.Simulated condition temperature, pressure, liquid phase are formed, the gas phase oxygen content, utilize the effluve igniting in gas phase, by observe precision pressure sensor pressure change judge have or not take place to dodge quick-fried.
Monitoring gas phase temperature meter 5 and monitoring liquid thermometer 6 are monitored the temperature of liquid and gas respectively.Precision pressure sensor 7, test pressure is accurate to 1KPa, but uses vacuum meter 7 when vacuumizing instead, and vacuum tightness is accurate to 0.1KPa.Igniter head 8 positions in gas phase from the about 10cm of kettle cover place.Kettle cover needs extra heating and insulation with the control gas phase temperature.
As in the hydrogen dioxide solution production by anthraquinone process device, oxidation liquid storage tank technological temperature is 45-55 ℃, the liquid phase material flash-point is 59.8 ℃ (closed-cups), owing to contain hydrogen peroxide in the storage tank, may decompose and emit oxygen and make the storage tank gas phase be in oxygen-enriched environment, therefore be necessary that the gas phase of studying storage tank under excess oxygen fires danger.Utilize analogue means to experimentize, experimentation is:
Utilize vacuum pump that autoclave pressure is extracted into more than the vacuum tightness 100KPa;
Utilize negative pressure to suck oxidation liquid 4L, advance different oxygen combination gas to be measured to normal pressure;
Utilize chuck that working fluid is heated to assigned temperature, utilize heat tape that kettle cover is heated to the temperature identical with working fluid, keeping the still internal pressure is normal pressure;
Open stirring in 3 minutes before the igniting, stirring rate is 200 rev/mins.Stop stirring and utilize the effluve igniting after 3 minutes, change if observe pressure, it is quick-fried to show that then sudden strain of a muscle appears in gas phase, and this step experiment is finished;
If the pressure no change then heats up about 0.5 ℃, continue igniting next time, till the appearance sudden strain of a muscle is quick-fried.Do not light as if double, need replace gas phase gas with incoming mixture.
Test result is as follows:
The quick-fried temperature of minimum sudden strain of a muscle when table 1 gas-phase space feeds different oxygen gas
When the analogue means gas phase was air, the quick-fried temperature of minimum sudden strain of a muscle was 64.6 ℃, and under the nominal situation condition, oxidation liquid storage tank technology maximum temperature is 55 ℃, and therefore not having gas phase fires danger.But when technology occurs when unusual, hydrogen peroxide may decompose and produce oxygen, and as can be seen from Table 1, oxidation liquid storage tank gas phase oxygen content surpasses at 50% o'clock, generation is fired danger existing under the incendiary source condition.When past analogue means gas-phase space feeding oxygen content was 16.95% Poor oxygen gas, gas phase did not have the danger of firing, and by the rule of gas phase Control for Oxygen Content, get half as the control alarming value, so oxidation liquid storage tank gas phase Control for Oxygen Content value should be 8%.
From then on example by the experiment of analogue means, can judge that the gas phase under the general working condition fires danger as can be seen, also can determine that exception condition issues the angry critical condition that fires mutually, proposes the security control value.
In use, utilize vacuum pump that autoclave pressure is extracted into more than the vacuum tightness 100KPa; Utilize negative pressure to suck a certain amount of material, advance to specify oxygen content gas to working condition pressure; Utilize chuck 4 that liquid phase material is heated to assigned temperature, utilize heat tape that gas phase is heated to the temperature identical with liquid phase, keeping the still internal pressure is working condition pressure; Determine whether out stirrer 3 and the rotating speed that stirs according to circumstances.Utilize the effluve igniting, change if observe pressure, it is quick-fried to show that then sudden strain of a muscle appears in gas phase, and the gas phase of equipment fires greatly dangerous under the working condition; If no pressure changes, show that the appearance sudden strain of a muscle is quick-fried in the autoclave pressure, the gas phase of equipment fires dangerous less under the working condition.
In another embodiment of the present invention, the device of equipment gas phase explosive characteristic comprises: autoclave, portfire and controller under the test working condition.
Described autoclave further can comprise autoclave kettle and kettle cover, and described autoclave kettle further comprises: high pressure vessel, stirrer, gearing, electrical heating chuck, detachable pressure transducer and thermometer.
Described portfire may further include igniter head, is used to adopt the mode of effluve to light a fire.
Described autoclave can be used for simulated condition temperature, pressure, liquid phase composition and gas phase oxygen content.
Described controller preferably links to each other with portfire, is used for controlling described portfire and adopts the mode of effluve to light a fire at gaseous environment.
Described controller preferably links to each other with described detachable pressure transducer; Described detachable pressure transducer further comprises precision pressure sensor and vacuum meter; Described precision pressure sensor is used for sensed pressure value variation when gaseous environment is lighted a fire, and sends the variation of sensed pressure value to controller; Described controller, the sensed pressure value that is used for transmitting according to precision pressure sensor change judgement and have or not the generation sudden strain of a muscle quick-fried when gaseous environment is lighted a fire.
Described thermometer may further include monitoring liquid thermometer and monitoring gas phase temperature meter.
Described device may further include gaseous environment and liquid phase environment in use in the autoclave kettle; Described portfire further comprises igniter head; Described igniter head is arranged in gaseous environment, apart from kettle cover 5～15cm place; Described kettle cover links to each other with controller, and further comprises kettle cover heating arrangement and kettle cover attemperator, is used to control the temperature of gaseous environment in the described autoclave kettle.
Described detachable pressure transducer may further include precision pressure sensor and vacuum meter; Described precision pressure sensor, its test pressure can be accurate to 1Kpa; Described device is when atmospheric pressure state uses, and detachable pressure transducer is a precision pressure sensor; When described device used at the state that vacuumizes, detachable pressure transducer was used vacuum meter instead, and described vacuum meter vacuum tightness can be accurate to 0.1KPa.
Described device can utilize vacuum pump that described autoclave is extracted into more than the vacuum tightness 100KPa in use; Utilize negative pressure inhalant liquid phase materials to form liquid phase environment; Add and specify oxygen content gas to working condition pressure to form gaseous environment; Utilize described electrical heating chuck that described liquid phase environment is heated to assigned temperature, utilize the kettle cover heating arrangement that described gaseous environment is heated to the temperature identical with liquid phase environment, and maintenance still internal pressure is a working condition pressure; Open and stirred 3-5 minute, rotating speed is 180～220 rev/mins, and about 200 rev/mins of preferred rotating speeds to promote vapor liquid equilibrium, should stop stirring and surpass 3 minutes before the igniting, guarantees that gas-liquid is static mutually substantially; Utilize described portfire effluve igniting, change non-vanishing if controller perceives force value, show that then gas phase occurs dodging quick-fried, change non-vanishing if controller perceives force value, show that then gas phase occurs dodging quick-fried, under this working condition, when appearance point burning things which may cause a fire disaster (as static, outside fire etc.), equipment just fires danger; If controller perceives force value and is changed to zero, show then to occur dodging quick-fried in the autoclave that equipment does not have gas phase and fires danger under this working condition.
Claims (10)
1. a device of testing equipment gas phase explosive characteristic under the working condition is characterized in that, comprising: autoclave, portfire and controller.
2. according to the device of equipment gas phase explosive characteristic under the described test working condition of claim 1, it is characterized in that, described autoclave further comprises autoclave kettle and kettle cover, and described autoclave kettle further comprises: high pressure vessel, stirrer, gearing, electrical heating chuck, detachable pressure transducer and thermometer.
3. according to the device of equipment gas phase explosive characteristic under the described test working condition of claim 1, it is characterized in that described portfire further comprises igniter head, be used to adopt the mode of effluve to light a fire.
4. according to the device of equipment gas phase explosive characteristic under the described test working condition of claim 1, it is characterized in that described autoclave is used for simulated condition temperature, pressure, liquid phase composition and gas phase oxygen content.
5. according to the device of equipment gas phase explosive characteristic under the described test working condition of claim 1, it is characterized in that described controller links to each other with portfire, be used for controlling described portfire and adopt the mode of effluve to light a fire at gaseous environment.
6. according to the device of equipment gas phase explosive characteristic under the described test working condition of claim 2, it is characterized in that described controller links to each other with described detachable pressure transducer; Described detachable pressure transducer further comprises precision pressure sensor and vacuum meter; Described precision pressure sensor is used for sensed pressure value variation when gaseous environment is lighted a fire, and sends the variation of sensed pressure value to controller; Described controller, the sensed pressure value that is used for transmitting according to precision pressure sensor change judgement and have or not the generation sudden strain of a muscle quick-fried when gaseous environment is lighted a fire.
7. according to the device of equipment gas phase explosive characteristic under the described test working condition of claim 2, it is characterized in that described thermometer further comprises monitoring liquid thermometer and monitoring gas phase temperature meter.
8. according to the device of equipment gas phase explosive characteristic under the described test working condition of claim 2, it is characterized in that described device further comprises gaseous environment and liquid phase environment in use in the autoclave kettle; Described portfire further comprises igniter head; Described igniter head is arranged in gaseous environment, apart from kettle cover 5～15cm place; Described kettle cover links to each other with controller, and further comprises kettle cover heating arrangement and kettle cover attemperator, is used to control the temperature of gaseous environment in the described autoclave kettle.
9. according to the device of equipment gas phase explosive characteristic under the described test working condition of claim 2, it is characterized in that described detachable pressure transducer further comprises precision pressure sensor and vacuum meter; Described precision pressure sensor, its test pressure can be accurate to 1Kpa; Described device is when atmospheric pressure state uses, and detachable pressure transducer is a precision pressure sensor; When described device used at the state that vacuumizes, detachable pressure transducer was used vacuum meter instead, and described vacuum meter vacuum tightness can be accurate to 0.1KPa.
10. the device of equipment gas phase explosive characteristic is characterized in that under the described according to Claim 8 test working condition, and described device utilizes vacuum pump that described autoclave is extracted into more than the vacuum tightness 100KPa in use; Utilize negative pressure inhalant liquid phase materials to form liquid phase environment; Add and specify oxygen content gas to working condition pressure to form gaseous environment; Utilize described electrical heating chuck that described liquid phase environment is heated to assigned temperature, utilize the kettle cover heating arrangement that described gaseous environment is heated to the temperature identical with liquid phase environment, and maintenance still internal pressure is a working condition pressure; Stirred 3-5 minute, rotating speed is 180～220 rev/mins; Stirring stops back 3～30 minutes, utilizes the igniting of described portfire effluve, changes non-vanishingly if controller perceives force value, shows that then gas phase occurs dodging quick-fried, and under this working condition, when the appearance point burning things which may cause a fire disaster, equipment exists and fires danger; If controller perceives force value and is changed to zero, show then to occur dodging quick-fried in the gas phase that equipment does not exist and fires danger under this working condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101629931A CN101995419A (en) | 2009-08-21 | 2009-08-21 | Device for testing air phase combustion and explosion characteristics of equipment under working conditions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101629931A CN101995419A (en) | 2009-08-21 | 2009-08-21 | Device for testing air phase combustion and explosion characteristics of equipment under working conditions |
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| CN101995419A true CN101995419A (en) | 2011-03-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809519A (en) * | 2012-09-02 | 2012-12-05 | 王利兵 | Gas chemical instability intelligent test device |
| CN112067659A (en) * | 2020-10-20 | 2020-12-11 | 南京理工大学 | Test device for testing high-pressure flash point of flammable liquid |
| CN112083040A (en) * | 2020-10-20 | 2020-12-15 | 南京理工大学 | Method for testing flash point of flammable liquid under high-pressure environment |
-
2009
- 2009-08-21 CN CN2009101629931A patent/CN101995419A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809519A (en) * | 2012-09-02 | 2012-12-05 | 王利兵 | Gas chemical instability intelligent test device |
| CN112067659A (en) * | 2020-10-20 | 2020-12-11 | 南京理工大学 | Test device for testing high-pressure flash point of flammable liquid |
| CN112083040A (en) * | 2020-10-20 | 2020-12-15 | 南京理工大学 | Method for testing flash point of flammable liquid under high-pressure environment |
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Application publication date: 20110330 |