CN110298091A - Based on the crimped ribbon arrester pore-size and flame parameters correlation model cut away from integral - Google Patents
Based on the crimped ribbon arrester pore-size and flame parameters correlation model cut away from integral Download PDFInfo
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- CN110298091A CN110298091A CN201910524268.8A CN201910524268A CN110298091A CN 110298091 A CN110298091 A CN 110298091A CN 201910524268 A CN201910524268 A CN 201910524268A CN 110298091 A CN110298091 A CN 110298091A
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Abstract
The present invention is in existing corrugated plate fire arrestor fire-retardant core pore channel structured design process, the calculating of flame heat transfer is calculated using classical static heat transfer theory, diabatic process Flame temperature in pore channel cannot be embodied, the variation of speed, and in existing corrugated plate fire arrestor structure design formula, only consider influence of the flame speed to corrugated-plate fire resisting core bore gap structure and does not consider influence of the flame temperature to its structure, to cause the problem of calculated result inaccuracy, it proposes a kind of based on the corrugated plate fire arrestor fire-retardant core pore channel structure size calculation method cut away from integral, pass through this method, the transient changing process of flame temperature and speed in communication process in fire-retardant core pore channel can be embodied in calculating process, and flame speed is derived by by this method, temperature and corrugated plating pore channel length, between height Correlation model, provide new method for corrugated plate fire arrestor back-fire relief core structure designs.
Description
Technical field
Invention belongs to Design of Mechanical Product and equipment safety field, relates generally to a kind of corrugated plate fire arrestor fire-retardant core hole
Channel design design method and a kind of flame speed, temperature and being associated between corrugated-plate fire resisting core bore gap passage length, height
Model.
Background technique
In the exploitation of coal mine gas and transmission process, fire arrester is answered extensively on gas storage and feed-line.Work as conveying
The air in pipeline of fuel gas is surprisingly ignited, and gas flame may travel to entire pipe network or even generate explosion, and then lead
Casualties and economic loss are caused, in order to avoid flame propagation to entire pipe network should install fire arrester in the duct.Gas flame
When propagating in pipe network, blast pressure and high-speed flame can do great damage to fire arrester, and then back-fire relief is caused to fail, therefore
The fire arrester that studying a kind of pair of blast pressure and high-speed flame can effectively inhibit is of great significance.
Design for corrugated plate fire arrestor fire-retardant core, current methods are mainly counted using classical heat transfer theory
It calculates, but since gas detonation rate is high in pipeline, corrugated-plate fire resisting core thickness is small, detonation flame passes through fire-retardant core hole
Time is extremely short, so often diabatic process as static heat transfer in calculating process, have ignored during flame propagation temperature and
The dynamic changing process of speed, and in existing corrugated plate fire arrestor structure design formula, only consider flame speed to corrugated plating
The influence of fire-retardant core pore structure and do not consider influence of the flame temperature to its structure, therefore calculated result is often not accurate enough.
Summary of the invention
The present invention is directed to propose a kind of new corrugated-plate fire resisting core bore gap channel design design method and flame are in corrugated plating
Dynamic heat transfer characterization model in fire-retardant core pore channel, flame temperature when more intuitive, more accurate reaction corrugated plate fire arrestor back-fire relief
The change procedure of degree, speed.
Several segments are divided by entire corrugated plating pore channel is isometric, calculate separately each section using heat transfer theory
Flame pass through after thermal loss, then to entire channel heat transfer integrate, obtain whole heat output, then utilize gap
Relationship between channel flame speed, temperature and heat output, obtain flame speed, temperature and corrugated plating pore channel length,
Correlation model between height.
Detailed description of the invention
Fig. 1 is corrugated plate fire arrestor fire-retardant core structural schematic diagram.
Fig. 2 is that the single pore channel of corrugated plate fire arrestor fire-retardant core divides schematic diagram.
Specific embodiment
Step 1: the fire-retardant core of corrugated plate fire arrestor is alternately formed by stacking by one layer of flat rubber belting and one layer of corrugated plating, is such as schemed
Shown in 1, pore channel height h, length L, isosceles triangle pore channel apex angle be θ, corrugated plating strip with a thickness ofδ, flat rubber belting
Thickness is identical as corrugated plating strip thickness.
Several segments are divided by single pore channel is isometric, every segment length isl, and will enter at the flame in channel
The flame group that the length being equal with pore channel Triangle ID shape and size is Δ x is managed into, as shown in Fig. 2, first with classics
Heat transfer theory writes out flame group and passes through the heat output Δ per a bit of pore channelQ m Temperature difference T is imported and exported with pore channelm、
The sum of single segment pore channel inner metal surfaces product A l And corrugated plating strip thicknessδBetween relational expression: calculate flame pass through
Per a bit of heat output Δ Qm:
M=1,2,3 ... represent m sections, and when m=1, origin of heat is initial flame group, and when m=2,3,4 ..., origin of heat is
The flame group in preceding a bit of exit.
Step 2: enablingl→ 0 and Δ x <l, the heat transfer of entire pore channel is integrated, flame group is obtained and passes through entirely
Total heat transfer when hole:
Step 3: flame group being calculated by the thermal loss amount after entire pore channel according to heat transfer theory, enables the thermal loss
Amount is identical as heat output, will wherein parameter related with flame speed and temperature be converted, and will be used in combination with flame speed and temperaturel, h and θ calculate A l And pore channel sectional area A, before corrugated plate fire arrestor design, it usually needs preset strip thicknessδAnd triangle hole vertex angle theta, soδAnd θ can as constant handle, therefore by above derive can obtain flame speed,
Correlation model between temperature and corrugated plating pore channel length, height:
Wherein v1、t1Enter the speed and temperature when pore channel, v for flame2、t2Speed when going out pore channel for flame and
Temperature.
Claims (3)
1. a kind of based on the corrugated plate fire arrestor pore channel structure size cut away from integral and flame status correlation model, feature
It is: proposes a kind of based on the corrugated plate fire arrestor pore channel construction design method cut away from integral, and is derived by flame
Correlation model between speed, temperature and corrugated plating pore channel length, height.
2. corrugated plate fire arrestor pore channel construction design method according to claim 1, feature includes: by pore channel
Segmentation, and the heat transfer of the entire pore channel of calculus theoretical calculation is utilized, flame temperature and speed can be embodied in calculating process
Spend the transient changing process in pore interior different location.
3. the correlation model between flame speed, temperature and corrugated plating pore channel length, height according to claim 1,
Its feature includes: the speed and temperature when measuring flame and entering pore channel, provides a pore channel exit flame
Speed and temperature can set the length and height of pore channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910524268.8A CN110298091B (en) | 2019-06-18 | 2019-06-18 | Corrugated flame arrester pore channel structure design method based on cut-distance integration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910524268.8A CN110298091B (en) | 2019-06-18 | 2019-06-18 | Corrugated flame arrester pore channel structure design method based on cut-distance integration |
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| CN110298091A true CN110298091A (en) | 2019-10-01 |
| CN110298091B CN110298091B (en) | 2020-11-13 |
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| CN201910524268.8A Expired - Fee Related CN110298091B (en) | 2019-06-18 | 2019-06-18 | Corrugated flame arrester pore channel structure design method based on cut-distance integration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660227A (en) * | 2020-12-22 | 2022-06-24 | 中国石油化工股份有限公司 | Flame arrester fire-arresting performance evaluation method and system thereof, and electronic equipment |
Citations (5)
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| US20080256938A1 (en) * | 2007-01-12 | 2008-10-23 | Miretti Angelo B | Explosion protection system with integrated emission control device |
| CN201342199Y (en) * | 2008-12-29 | 2009-11-11 | 启东市天宇石化冶金设备有限公司 | Honeycomb corrugated plate fire arrestor |
| CN206026910U (en) * | 2016-08-26 | 2017-03-22 | 四川普瑞净化设备有限公司 | Buckled plate type spark arrester |
| CN108014438A (en) * | 2017-12-07 | 2018-05-11 | 西安科技大学 | A kind of combined type spark arrester |
| CN208611632U (en) * | 2016-08-31 | 2019-03-19 | 艾默生过程管理调节技术塔尔萨有限公司 | Flame unit, fire arrester and back-fire relief device assembly |
-
2019
- 2019-06-18 CN CN201910524268.8A patent/CN110298091B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080256938A1 (en) * | 2007-01-12 | 2008-10-23 | Miretti Angelo B | Explosion protection system with integrated emission control device |
| CN201342199Y (en) * | 2008-12-29 | 2009-11-11 | 启东市天宇石化冶金设备有限公司 | Honeycomb corrugated plate fire arrestor |
| CN206026910U (en) * | 2016-08-26 | 2017-03-22 | 四川普瑞净化设备有限公司 | Buckled plate type spark arrester |
| CN208611632U (en) * | 2016-08-31 | 2019-03-19 | 艾默生过程管理调节技术塔尔萨有限公司 | Flame unit, fire arrester and back-fire relief device assembly |
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| N.A.KAKUTKINA等: "Burning-through of porous flame arresters with a channel flame-arrester element", 《COMBUSTION EXPLOSION AND SHOCK WAVES》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660227A (en) * | 2020-12-22 | 2022-06-24 | 中国石油化工股份有限公司 | Flame arrester fire-arresting performance evaluation method and system thereof, and electronic equipment |
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| CN110298091B (en) | 2020-11-13 |
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