CN112057769A - Gas explosion suppression method with synergistic effect of two mechanisms - Google Patents
Gas explosion suppression method with synergistic effect of two mechanisms Download PDFInfo
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- CN112057769A CN112057769A CN202010989260.1A CN202010989260A CN112057769A CN 112057769 A CN112057769 A CN 112057769A CN 202010989260 A CN202010989260 A CN 202010989260A CN 112057769 A CN112057769 A CN 112057769A
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Abstract
The invention relates to a gas explosion suppression method with synergistic effect of two mechanisms, belonging to the field of gas explosion suppression. The method comprises the following steps: when gas explosion occurs, the buffering energy absorption module is compressed by the pressure of shock waves so as to buffer, absorb, reduce the energy and the pressure of the shock waves; the chain breaking, cooling, quenching and explosion suppression module moves positively to cool and quench flame waves; and the chain breaking, cooling, quenching and explosion suppression module reversely moves to cool and quench the flame waves again. Based on the synergistic effect of the double mechanisms of buffering, energy absorption and pressure reduction and positive and negative bidirectional chain breaking, temperature reduction and quenching promotion, the more obvious and effective gas explosion suppression effect is achieved, and the mobile explosion suppression is realized.
Description
Technical Field
The invention belongs to the field of gas explosion suppression, and relates to a gas explosion suppression method with synergistic effect of two mechanisms.
Background
At present, the gas explosion suppression device or method used in the fields of oil gas, chemical industry, coal mine, civil use, military use and the like mainly performs single or multi-phase synergistic explosion suppression by depending on various chemical and physical mechanisms. The synergistic explosion suppression method has better effect than a single explosion suppression method, and is the key development direction in the future.
The existing gas explosion suppression technology and method have various effects. The explosion suppressor comprises pure water mist, water mist containing different additives, various inert gases, various inert powders and the like, and the explosion suppressor comprises an active photoelectric induction explosion suppressor, a passive explosion shock wave excitation type explosion suppressor, a flame arrester and the like.
The water mist is mainly used for initial fire suppression in the field of fire fighting, and has certain effect when being applied to dust removal, fire suppression and explosion suppression in coal mines, dust factories and other environments. However, a lot of experiments prove that in some cases, the water mist can promote explosion. The inert gas mainly comprises nitrogen, carbon dioxide and the like, is mainly used for fire extinguishing and explosion suppression, has relatively high manufacturing cost and limited use scenes due to the need of special devices, and can cause local overrun and secondary accidents on the contrary if the injection mode of the inert gas is not fully considered. The inert powder is mainly various non-combustible dry powder, such as ammonium phosphate and the like, and is mainly used for fire extinguishing and explosion suppression, and a large number of accident cases show that the inert powder is not used for a long time and has the conditions of agglomeration and failure. The photoelectric induction type active explosion insulation and suppression device is mainly applied to the special fields of coal mines, military industry and the like, the technology is advanced, but the cost is high, if an induction component fails, the situation that explosion flame cannot be induced can occur, the device cannot be rapidly excited, and the possibility of failure also exists. The flame arrester is applied to the pipeline explosion suppression part in a plurality of fields, especially the petrochemical field, prevents that the pipeline from taking place to leak the explosion, and the explosion of separation burning spreads the diffusion fast in the pipeline is inside, and current flame arrester is all installed in the pipeline junction, and because separate the mistake scheduling problem of explosion suppression type selection, its back-fire relief rate can not reach actual conditions's requirement, can appear suppressing the possibility of becoming invalid.
Disclosure of Invention
In view of the above, the present invention aims to provide a gas explosion suppression method with synergistic effect of two mechanisms, which has good comprehensive explosion suppression effect and solves the defects of a single explosion suppression method.
In order to achieve the purpose, the invention provides the following technical scheme:
a gas explosion suppression method with synergistic effect of two mechanisms comprises the following steps:
buffering, energy absorption and pressure reduction: when gas explosion occurs, the buffering energy-absorbing module is compressed by the pressure of shock waves generated by explosion to absorb energy and store energy, so that the pressure of the shock waves is reduced, and the propagation speed of the shock waves is slowed down;
forward chain scission cooling extinguishment promotion and explosion suppression: when gas explosion occurs, the chain breaking, cooling, quenching and explosion suppression module moves positively, and when flame waves generated by explosion with the propagation speed slower than that of shock waves contact the chain breaking, cooling, quenching and explosion suppression module, the chain breaking, cooling, quenching and explosion suppression module cools and quenches the flame waves;
and (3) reverse chain scission cooling quenching and explosion suppression: and the chain breaking, cooling, quenching and explosion suppression module moves reversely to cool and quench the flame waves again.
Furthermore, the chain breaking, temperature reduction, extinguishment promotion and explosion suppression module moves forward under the pressure of shock waves generated by explosion, and then the buffering energy absorption module is compressed to buffer, absorb energy and reduce pressure of the shock waves.
Further, after the chain breaking, cooling, quenching and explosion suppression module moves forwards to reach a mechanical balance position point, the pressure of shock waves is continuously attenuated, and the chain breaking, cooling, quenching and explosion suppression module moves reversely under the elastic force generated by the rebound of the buffering and energy absorption module.
The invention has the beneficial effects that:
according to the invention, by fully utilizing the elastic expansion characteristic of the buffering energy-absorbing module and the forward and reverse movement characteristics of the chain-breaking, cooling, quenching and explosion suppression module, based on the synergistic effect of the buffering energy-absorbing and pressure-reducing and forward and reverse bidirectional chain-breaking, cooling, quenching and explosion suppression, and reverse movement, chain-breaking, cooling, quenching and explosion suppression, three functions of buffering energy-absorbing and pressure-reducing, forward movement, chain-breaking, cooling, quenching and explosion suppression are realized, more obvious and effective gas explosion suppression effect is achieved, the defect of fixed-point explosion suppression of a flame arrester, fine water mist and the like is overcome, and mobile explosion suppression is realized. The invention is suitable for being widely applied to places such as gas pipelines, petroleum hazardous chemical containers, coal mine tunneling working faces and the like, and the explosion is controlled in a very small range so as not to cause explosion diffusion and propagation.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a flow chart of the operation of the present invention;
fig. 2 is a diagram of the real-time explosion suppression effect of the invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a method for suppressing gas explosion with two mechanisms cooperating with each other includes the following steps:
buffering, energy absorption and pressure reduction: when gas explosion occurs, the chain breaking, cooling, quenching and explosion suppression module moves forward under the pressure of shock waves generated by explosion, so that the buffering and energy absorption module is compressed, the buffering and energy absorption module absorbs energy and stores energy, the pressure of the shock waves is reduced, the propagation speed of the shock waves is reduced, and the damage effect caused by the fact that the shock waves are rapidly propagated to a far place is avoided;
forward chain scission cooling extinguishment promotion and explosion suppression: in the forward moving process of the chain breakage cooling, quenching and explosion suppression module, when flame waves generated by explosion with the propagation speed slower than that of shock waves contact the chain breakage cooling, quenching and explosion suppression module, the chain breakage cooling, quenching and explosion suppression module cools and quenches the flame waves;
and (3) reverse chain scission cooling quenching and explosion suppression: after the chain-breaking cooling, extinguishing-promoting and explosion-suppressing module moves forwards to reach a mechanical balance position point, the pressure of the shock wave is continuously attenuated, the chain-breaking cooling, extinguishing-promoting and explosion-suppressing module moves reversely under the elastic force generated by rebounding of the buffering energy-absorbing module, and the flame wave is cooled and extinguished again.
In this embodiment, the buffering energy-absorbing module may be any elastic member having elastic expansion characteristics, such as a spring, a hydraulic rod, and the like. The buffering energy-absorbing module has proper elasticity and is combined with the chain-breaking temperature-reducing extinguishment-promoting explosion-suppression module to realize movement explosion suppression. Otherwise, if the reverse acting force is too large, the forward movement of the chain-breaking temperature-reduction extinguishing-promotion explosion-suppression module and the compression effect of the buffering energy-absorbing module can not be realized due to the fact that the reverse acting force is larger than the pressure of the shock wave generated by explosion, and if the reverse acting force is too small, the reverse movement of the chain-breaking temperature-reduction extinguishing-promotion explosion-suppression module and the rebound effect of the buffering energy-absorbing module can not be realized.
The chain-breaking temperature-reducing quenching-accelerating explosion-suppressing module is a porous structural member made of high-temperature-resistant materials, and the porous structure means that a plurality of pores are formed in the materials, and the porosity is controlled in a reasonable range and cannot be too small. The chemical reaction in the flame wave is inhibited due to the effects of wall collision, quenching promotion, temperature reduction and the like of the porous structural member, so that the quenching promotion of the flame wave is realized.
Referring to fig. 2, it can be known from the real-time explosion suppression effect diagram that, by using the gas explosion suppression method provided in this embodiment, explosion flames can be completely suppressed within 170ms for high-concentration gas explosion through the combined action of three functions of buffering, energy absorption, pressure reduction, forward motion, chain breakage, temperature reduction, quenching, explosion suppression promotion, and reverse motion, chain breakage, temperature reduction, quenching, explosion suppression, etc.; for gas explosion with lower concentration, the flame extinguishing time is shorter, and the explosion flame can be extinguished within 130ms or so. Also, the flame is controlled to a small extent without diffusion propagation that forms an explosion. In general, the gas explosion suppression method with the synergistic effect of the two mechanisms has a good explosion suppression effect on gas explosion.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (3)
1. A gas explosion suppression method with synergistic effect of two mechanisms is characterized in that: the method comprises the following steps:
buffering, energy absorption and pressure reduction: when gas explosion occurs, the buffering energy-absorbing module is compressed by the pressure of shock waves generated by explosion to absorb energy and store energy, so that the pressure of the shock waves is reduced, and the propagation speed of the shock waves is slowed down;
forward chain scission cooling extinguishment promotion and explosion suppression: when gas explosion occurs, the chain breaking, cooling, quenching and explosion suppression module moves positively, and when flame waves generated by explosion with the propagation speed slower than that of shock waves contact the chain breaking, cooling, quenching and explosion suppression module, the chain breaking, cooling, quenching and explosion suppression module cools and quenches the flame waves;
and (3) reverse chain scission cooling quenching and explosion suppression: and the chain breaking, cooling, quenching and explosion suppression module moves reversely to cool and quench the flame waves again.
2. The method for suppressing gas explosion with double mechanism synergistic effect according to claim 1, characterized in that: the chain breaking temperature reduction extinguishment-promotion explosion suppression module moves forward under the pressure of shock waves generated by explosion, and then the buffering energy absorption module is compressed to buffer, absorb energy and reduce pressure of the shock waves.
3. The method for suppressing gas explosion with double mechanism synergistic effect according to claim 2, characterized in that: after the chain-breaking temperature-reducing, extinguishing-promoting and explosion-suppressing module moves forwards to reach a mechanical balance position point, the pressure of shock waves is continuously attenuated, and the chain-breaking temperature-reducing, extinguishing-promoting and explosion-suppressing module moves reversely under the elastic force generated by rebounding of the buffering energy-absorbing module.
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| CN202010989260.1A CN112057769A (en) | 2020-09-18 | 2020-09-18 | Gas explosion suppression method with synergistic effect of two mechanisms |
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| CN202010989260.1A CN112057769A (en) | 2020-09-18 | 2020-09-18 | Gas explosion suppression method with synergistic effect of two mechanisms |
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Citations (5)
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|---|---|---|---|---|
| SU552976A1 (en) * | 1972-08-24 | 1977-04-05 | Предприятие П/Я Р-6603 | Flame Prevention Device |
| CN1251890C (en) * | 2003-01-28 | 2006-04-19 | 马丹卫 | Handicraft article and producing method thereof |
| JP2007151712A (en) * | 2005-12-02 | 2007-06-21 | Ishikawajima Harima Heavy Ind Co Ltd | Backfire back pressure prevention device |
| CN210219330U (en) * | 2019-08-05 | 2020-03-31 | 周敏 | Natural gas pipeline with flame arrester |
| CN211449666U (en) * | 2019-12-18 | 2020-09-08 | 徐州浩汤机械设备有限公司 | Flameless bleeder |
-
2020
- 2020-09-18 CN CN202010989260.1A patent/CN112057769A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU552976A1 (en) * | 1972-08-24 | 1977-04-05 | Предприятие П/Я Р-6603 | Flame Prevention Device |
| CN1251890C (en) * | 2003-01-28 | 2006-04-19 | 马丹卫 | Handicraft article and producing method thereof |
| JP2007151712A (en) * | 2005-12-02 | 2007-06-21 | Ishikawajima Harima Heavy Ind Co Ltd | Backfire back pressure prevention device |
| CN210219330U (en) * | 2019-08-05 | 2020-03-31 | 周敏 | Natural gas pipeline with flame arrester |
| CN211449666U (en) * | 2019-12-18 | 2020-09-08 | 徐州浩汤机械设备有限公司 | Flameless bleeder |
Non-Patent Citations (4)
| Title |
|---|
| YULONG DUAN ET AL.,: ""Study on the explosion characteristics of methane/air premixed gas under the inhibition of sliding airtight device", Yulong Duan et al.,《Energy Sources, Part A: Recovery, Utilization, andEnvironmental Effects》,第1-16页", 《ENERGY SOURCES, PART A: RECOVERY, UTILIZATION, ANDENVIRONMENTAL EFFECTS》 * |
| 肖忠良等: "《火炸药的安全与环保技术》", 31 January 2006, 北京理工大学出版社 * |
| 解立峰等: "《防火与防爆工程》", 30 April 2010, 冶金工业出版社 * |
| 魏伴云: "《火灾与爆炸灾害安全工程学》", 31 August 2004, 中国地质大学出版社 * |
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Application publication date: 20201211 |