CN209803039U - Testing device for combustible gas explosion flow field in confined space under water storage condition - Google Patents
Testing device for combustible gas explosion flow field in confined space under water storage condition Download PDFInfo
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- CN209803039U CN209803039U CN201920277527.7U CN201920277527U CN209803039U CN 209803039 U CN209803039 U CN 209803039U CN 201920277527 U CN201920277527 U CN 201920277527U CN 209803039 U CN209803039 U CN 209803039U
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Abstract
The utility model discloses a confined space combustible gas explosion flow field testing device under water storage condition, which comprises a pipeline system, a water supply system, a gas distribution system, an ignition control system and a data acquisition system; the pipeline system is formed by connecting five sections of pipelines in sequence to form a closed constraint space, a pair of pressure sensors and temperature sensors are respectively installed at the center of the top of each section of pipeline, the four sections of pipelines at the end parts are made of steel materials, a round transparent window is installed at the center right in front of each section of pipeline, the middle section of pipeline is made of transparent explosion-proof glass, and high-speed cameras are arranged at the positions corresponding to the round transparent window and the transparent explosion-proof glass. The gas explosion experiment under the coexistence condition of water storage and combustible gas in the confined space can be carried out, and the process monitoring of explosion pressure, temperature and flame can be realized.
Description
Technical Field
the utility model relates to a combustible gas explosion flow field test technique especially relates to a restraint space combustible gas explosion flow field testing arrangement under retaining condition.
Background
The research on gas explosion is prominent in the field of safety engineering, and is particularly concerned by society when the problems of risk assessment, safety protection and the like of urban public infrastructures are involved. At present, confined space gas explosion is a hot point of research, but the research on a gas explosion catastrophe evolution process, a disaster prevention and control technology and the like in a confined space is delayed, and a series of urban underground confined space gas explosion accidents occur in recent years, and particularly, the method is worthy of paying attention to the fact that volatile oil gas accumulates in municipal drainage underground channels and explodes when meeting sparks, so that 62 people die and 136 people are injured, and the direct economic loss is nearly 7.52 million yuan, wherein the accidents occur in 11.22 underground petroleum underground oil pipelines in Qingdao island city in Shandong province in 2013; in 2014, the 8.1 underground gas pipeline of Taiwan hero in China has the explosion accidents caused by leakage, and the leaked gas is diffused along a drainage box culvert and is exploded by a heat source, so that 30 people die and 310 people are injured. The above-mentioned serious accidents all belong to the gas explosion accidents which occur in the constraint space where explosive gas and water storage coexist.
At present, researchers develop the influence of fine water mist in a confined space on the explosion characteristics of combustible gas, however, a municipal sewage discharge space is a comprehensive system with the coexistence of combustible gas and water storage, the existence form and the action mode of the water storage in the explosion process are fundamentally different from the fine water mist in the previous research, and no corresponding testing device or method exists aiming at the explosion of the combustible gas in the confined space under the water storage condition, so that the research on the aspects of gas explosion disaster-causing mechanism, safety protection and the like in the urban underground confined space is restricted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a restraint space combustible gas explosion flow field testing arrangement under retaining condition.
The utility model aims at realizing through the following technical scheme:
The utility model discloses a confined space combustible gas explosion flow field testing arrangement under water storage condition, including pipeline system, water supply system, gas distribution system, ignition control system, data acquisition system five parts;
The pipeline system is characterized in that a first section of pipeline, a second section of pipeline, a third section of pipeline, a fourth section of pipeline and a fifth section of pipeline are sequentially connected to form a closed constraint space, a pair of pressure sensors and temperature sensors are respectively installed at the center of the top of each section of pipeline, the first section of pipeline, the second section of pipeline, the fourth section of pipeline and the fifth section of pipeline are made of steel materials, a round transparent window is installed at the center right in front of each section of pipeline, the third section of pipeline is made of transparent explosion-proof glass, and a high-speed camera is arranged at the position corresponding to the round transparent window and the transparent explosion-proof glass.
by the foregoing the utility model provides a technical scheme can find out, the embodiment of the utility model provides a restraint space combustible gas explosion flow field testing arrangement under the retaining condition can develop the gas explosion experiment under retaining and the coexistence condition of combustible gas in the restraint space to the process monitoring of explosion pressure, temperature and flame can be realized.
Drawings
Fig. 1 is the structural schematic diagram of the combustible gas explosion flow field testing device in the confined space under the water storage condition provided by the embodiment of the utility model.
In the figure:
1-a first section of pipe; 2-a second section of pipeline; 3-a third section of piping; 4-a fourth section of pipeline; 5-a fifth section of pipeline; 6-pressure sensor and temperature sensor; 7-round transparent window; 8-high speed camera; 9-transparent explosion-proof glass; 10-an ignition rod; 11-pressure gauge; 12-water injection/water discharge; 13-a valve; 14-a vacuum pump; 15-a valve; 16-a combustible gas cylinder; 17-a valve; 18-a water tank; 19-a computer; 20-an ignition system; 21-a pressure temperature acquisition system; 22-flame collection system.
Detailed Description
embodiments of the present invention will be described in further detail below. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.
The utility model discloses a restraint space combustible gas explosion flow field testing arrangement under retaining condition, the concrete implementation of its preferred is shown in figure 1:
The ignition control system comprises a pipeline system, a water supply system, a gas distribution system, an ignition control system and a data acquisition system;
The pipeline system is characterized in that a first section of pipeline 1, a second section of pipeline 2, a third section of pipeline 3, a fourth section of pipeline 4 and a fifth section of pipeline 5 are sequentially connected to form a closed constraint space, a pair of pressure sensor and temperature sensor 6 are respectively installed at the center of the top of each section of pipeline, the first section of pipeline 1, the second section of pipeline 2, the fourth section of pipeline 4 and the fifth section of pipeline 5 are made of steel materials, a round transparent window 7 is installed at the center right in front of each section of pipeline, the third section of pipeline 3 is made of transparent explosion-proof glass 9, and a high-speed camera 8 is arranged at the position corresponding to the round transparent window 7 and the transparent explosion-proof glass 9.
The water supply system comprises a water tank 18, and the water tank 18 is connected with a water filling/discharging port 12 arranged on the pipeline system through a valve 17.
The gas distribution system comprises a pressure gauge 11, a vacuum pump 14 and a combustible gas cylinder 16, wherein the vacuum pump 14 and the combustible gas cylinder 16 are respectively connected with the fifth section of pipeline 5 through valves, and the pressure gauge 11 is arranged on the first section of pipeline 1.
The ignition control system comprises a computer 19, an ignition system 20 and an ignition rod 10, wherein the ignition rod 10 is arranged on the first section of pipeline 1 and is connected with the computer 19 through the ignition system 20.
The data acquisition system comprises a pressure temperature acquisition system 21 and a flame acquisition system 22, the high-speed camera 8 is connected with the computer 19 through the flame acquisition system 22, and the pressure sensor and the temperature sensor 6 are connected with the computer 19 through the pressure temperature acquisition system 21.
the pressure bearing capacity of the pipeline system is not lower than 2MPa, each section of pipeline is 0.8m long, the section of the pipeline is square, the side length of the pipeline is 0.1m, and the diameter of the round transparent window 7 is 3 cm.
The method for testing the combustible gas explosion flow field testing device in the confined space under the water storage condition comprises the following steps:
A. installing and debugging a testing device: installing and connecting a pipeline system, a water supply system, a gas distribution system, an ignition control system and a data acquisition system, debugging each part, ensuring good pipeline sealing and ensuring normal operation of each system;
B. Injecting water into the pipeline: opening a valve 17, injecting water in a water tank 18 into a pipeline through a water injection/water discharge port 12, determining the water injection amount by observing transparent explosion-proof glass 9, and closing the valve 17 to stop water injection when the preset water injection amount is reached;
C. Vacuumizing in the pipeline: opening a valve 13, starting a vacuum pump 14, vacuumizing a pipeline system, observing pressure change in the pipeline through a pressure gauge 11, stopping the vacuum pump 14 and closing the valve 13 when set pressure is reached, and finishing vacuumizing;
D. distributing gas in the pipeline: opening a valve 15, filling gas in a combustible gas cylinder 16 into a pipeline based on a partial pressure method, observing pressure change in the pipeline through a pressure gauge 11, closing the valve 15 when preset pressure is reached, standing the pipeline for a period of time, and ensuring that the combustible gas is fully mixed with air in the pipeline and is uniformly distributed in the pipeline;
E. And (3) ignition: the computer 19 controls the ignition system 20, and a certain ignition energy and ignition delay time are set, so that the ignition rod 10 discharges at high voltage to generate electric sparks to ignite combustible gas in the pipeline;
F. Data acquisition: after ignition, the explosion pressure and temperature data of each section of pipeline are collected through the computer 19, the pressure and temperature collection system 21, the pressure sensor and the temperature sensor 6, the data of explosion flame spread to the circular transparent window 7 and the transparent explosion-proof glass 9 are collected through the computer 19, the flame collection system 22 and the high-speed camera 8, and the collected data are stored in the computer 19;
G. turning off the power supply and the test system;
H. discharging water through a pipeline: opening a valve 17, and emptying residual water stored in the pipeline after explosion;
I. And (3) data analysis: the explosion pressure, temperature and flame data recorded by the computer 19 are collated and analyzed.
The utility model discloses a restraint space combustible gas explosion flow field testing arrangement under the retaining condition can develop the gas explosion experiment under retaining and the coexistence condition of combustible gas in the restraint space to can realize the process monitoring of explosion pressure, temperature and flame.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. a testing device for an explosion flow field of combustible gas in a confined space under a water storage condition is characterized by comprising a pipeline system, a water supply system, a gas distribution system, an ignition control system and a data acquisition system;
the pipeline system is characterized in that a first section of pipeline (1), a second section of pipeline (2), a third section of pipeline (3), a fourth section of pipeline (4) and a fifth section of pipeline (5) are sequentially connected to form a closed constraint space, a pair of pressure sensor and temperature sensor (6) are respectively installed at the center of the top of each section of pipeline, the first section of pipeline (1), the second section of pipeline (2), the fourth section of pipeline (4) and the fifth section of pipeline (5) are made of steel materials, a round transparent window (7) is installed at the center right in front of each section of pipeline, the third section of pipeline (3) is made of transparent explosion-proof glass (9), and a high-speed camera (8) is arranged at the position corresponding to the round transparent window (7) and the transparent explosion-proof glass (9).
2. The confined space combustible gas explosion flow field test device under impounded water conditions of claim 1 wherein the water supply system comprises a water tank (18), the water tank (18) being connected through a valve (17) to a water injection/discharge (12) provided on the piping system.
3. The testing device for the confined space combustible gas explosion flow field under the water storage condition according to claim 2 is characterized in that the gas distribution system comprises a pressure gauge (11), a vacuum pump (14) and a combustible gas cylinder (16), wherein the vacuum pump (14) and the combustible gas cylinder (16) are respectively connected with the fifth section of pipeline (5) through valves, and the pressure gauge (11) is arranged on the first section of pipeline (1).
4. the confined space combustible gas explosion flow field test device under water storage conditions of claim 3, wherein said ignition control system comprises a computer (19), an ignition system (20) and an ignition rod (10), said ignition rod (10) is mounted on said first section of pipe (1) and connected with said computer (19) through said ignition system (20).
5. The confined space combustible gas explosion flow field testing device under water storage conditions of claim 4, characterized in that said data acquisition system comprises a pressure temperature acquisition system (21) and a flame acquisition system (22), said high speed camera (8) being connected to said computer (19) through said flame acquisition system (22), said pressure and temperature sensors (6) being connected to said computer (19) through said pressure temperature acquisition system (21).
6. the confined space combustible gas explosion flow field test device under impounded water conditions of claim 5, characterized in that each section of the pipeline system is 0.8m long, the section of the pipeline is square, the side length is 0.1m, and the diameter of the round transparent window (7) is 3 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920277527.7U CN209803039U (en) | 2019-03-04 | 2019-03-04 | Testing device for combustible gas explosion flow field in confined space under water storage condition |
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| CN201920277527.7U CN209803039U (en) | 2019-03-04 | 2019-03-04 | Testing device for combustible gas explosion flow field in confined space under water storage condition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856184A (en) * | 2019-03-04 | 2019-06-07 | 北京石油化工学院 | Constraint space flammable gas explosion flow-field test device and method under water storage condition |
| CN113834853A (en) * | 2021-08-27 | 2021-12-24 | 北京石油化工学院 | Device and method for testing explosion characteristics of combustible gas in oil-water-gas coexistence limited space |
-
2019
- 2019-03-04 CN CN201920277527.7U patent/CN209803039U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856184A (en) * | 2019-03-04 | 2019-06-07 | 北京石油化工学院 | Constraint space flammable gas explosion flow-field test device and method under water storage condition |
| CN113834853A (en) * | 2021-08-27 | 2021-12-24 | 北京石油化工学院 | Device and method for testing explosion characteristics of combustible gas in oil-water-gas coexistence limited space |
| CN113834853B (en) * | 2021-08-27 | 2024-01-12 | 北京石油化工学院 | Device and method for testing explosion characteristics of fuel gas in oil-water-gas coexistence limited space |
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