Flame arrester explosion resistance performance detection device

Abstract

The utility model discloses a flame arrester explosion resistance performance detection device, which relates to the technical field of flame arrester detection, and comprises a gas distribution device, an ignition device, a flame arrester, a mixing chamber, a plurality of gas cylinders, a plurality of gas cylinders and a plurality of gas cylinders, the flow guide plate is tightly attached to the inner wall of the mixing chamber and surrounds the inner wall of the mixing chamber for at least one circle to form a continuous spiral structure; according to the utility model, the guide plate in the mixing chamber guides gas to form a specific path to flow so as to increase the collision mixing opportunity, the porous distributor primarily disperses the gas, and the narrow tube chamber adjusts the gas flow rate to promote the intermolecular distance change so as to facilitate mixing; through the measures, different gases can be more fully and uniformly mixed in the whole gas distribution system.

Description

Technical Field

[0001] The utility model relates to the technical field of flame arrester detection, in particular to a flame arrester explosion resistance performance detection device. Background Art

[0002] In numerous industrial sectors involving the handling, storage, and transportation of flammable gases, such as petrochemicals, natural gas extraction and transportation, and coal chemical industries, flame arresters, as critical safety devices, are widely used to prevent flames from spreading within pipeline systems, thereby avoiding potentially catastrophic explosions. Therefore, accurately and reliably testing the explosion-resistant performance of flame arresters is crucial to ensuring industrial production safety.

[0003] However, the existing flame arrester explosion resistance performance testing technology and related equipment have many shortcomings and cannot meet the increasing demand for industrial safety testing.

[0004] Traditional gas distribution devices usually use relatively simple valves for flow regulation, and their accuracy is difficult to guarantee, which easily leads to large deviations in the concentration of the configured mixed gas. Moreover, after the gas enters the mixing chamber, due to the lack of an effective mixing promotion mechanism, uneven mixing often occurs. As a result, the composition and concentration of the mixed gas used in the test cannot truly reflect the actual working conditions, which in turn affects the accuracy of the flame arrester explosion resistance performance test.

[0005] In view of this, this application is hereby filed. Utility Model Content

[0006] The purpose of the present invention is to provide a flame arrester explosion resistance performance detection device to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the utility model provides a flame arrester explosion-proof performance detection device, including a gas distribution device, an ignition device, a flame arrester, and also includes a mixing chamber, one end of which is connected to multiple gas cylinders, and the other end is connected to the connection between the ignition device and the flame arrester; a guide plate, which fits tightly on the inner wall of the mixing chamber and surrounds the inner wall of the mixing chamber for at least one week to form a continuous spiral structure.

[0008] Furthermore, it also includes a narrow tube chamber, there are multiple mixing chambers, and the multiple mixing chambers are connected through the narrow tube chamber, and both ends of the narrow tube chamber are gradually contracted toward the center.

[0009] Furthermore, it also includes a porous distributor, and there are multiple porous distributors, which are respectively installed at the connection point between each mixing chamber and the narrow tube chamber.

[0010] Furthermore, the ignition device is arranged on one side of the flame arrester, a connecting pipe is provided between the ignition device and the flame arrester, and the gas distribution device is communicated with the middle end of the connecting pipe.

[0011] Furthermore, a collection device is provided on the other side of the flame arrester, a connecting pipe is also provided between the collection device and the flame arrester, and the collection device is electrically connected to an analysis instrument.

[0012] Furthermore, a safety protection device is provided on the outside of the flame arrester, and the safety protection device is used to seal the outside of the flame arrester.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] In the present invention, the guide plate in the mixing chamber guides the gas to form a specific flow path to increase the chance of collision and mixing, the porous distributor preliminarily disperses the gas, and the narrow tube chamber adjusts the gas flow rate to cause the distance between molecules to change, which is conducive to mixing. These measures enable different gases to be mixed more fully and evenly in the entire gas distribution system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a flow chart of a device for detecting the explosion resistance of a flame arrester;

[0016] Figure 2 This is a schematic diagram of the mixing chamber structure of a flame arrester explosion resistance performance testing device;

[0017] Figure 3 The figure is a schematic diagram of the cross-sectional structure of a flame arrester explosion resistance performance detection device.

[0018] In the figure: 1. Gas distribution device; 101. Mixing chamber; 102. Narrow tube chamber; 103. Guide plate; 104. Porous distributor; 2. Ignition device; 3. Flame arrester; 4. Connecting pipe; 5. Collection device; 6. Analytical instrument; 7. Safety protection device. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-3 , the utility model provides a technical solution:

[0021] A flame arrester explosion-proof performance detection device includes a gas distribution device 1, an ignition device 2, and a flame arrester 3. The ignition device 2 is arranged on one side of the flame arrester 3. A connecting pipe 4 is provided between the ignition device 2 and the flame arrester 3. The gas distribution device 1 is connected to the middle end of the connecting pipe 4.

[0022] The ignition device 2 is arranged on one side of the flame arrester 3. When the mixed gas configured by the gas distribution device 1 fills the connecting pipe 4 and the area between the ignition device 2 and the flame arrester 3, the relevant components in the ignition device 2 (such as the high-voltage power supply, the ignition electrode, etc.) will perform high-voltage discharge ignition on the mixed gas, causing the mixed gas to explode, generating flames and explosion pressure waves, and the flames and pressure waves will then propagate along the connecting pipe 4 to the flame arrester 3.

[0023] Gas storage container: includes multiple gas cylinders, each of which is dedicated to storing a type of gas. The material of the gas cylinder must have good pressure resistance, corrosion resistance and other properties to ensure the safe storage of gas.

[0024] Flow regulating component: installed on the pipeline leading to the mixing chamber 101 from each gas storage container, it controls the output flow of each gas by adjusting the valve opening, thereby configuring the mixed gas according to the predetermined ratio.

[0025] It also includes a mixing chamber 101, one end of which is connected to multiple gas cylinders and the other end is connected to the connection between the ignition device 2 and the flame arrester 3; a guide plate 103, which fits tightly on the inner wall of the mixing chamber 101 and surrounds the inner wall of the mixing chamber 101 for at least one week to form a continuous spiral structure.

[0026] After the gas enters the mixing chamber 101, it flows along a specific spiral path under the guidance of the guide plate 103. This flow mode causes the gas to continuously change its flow direction, resulting in frequent collisions and cross-mixing with the gas in other parts of the mixing chamber 101. For example, the methane and hydrogen gas flows that originally entered the chamber from different pipes and may flow in a straight line will continuously intertwine and collide with each other under the action of the guide plate 103, thereby promoting the mixing between them at the molecular level, allowing different gases to be mixed together more quickly and fully, and greatly shortening the time required to reach a uniform mixing state.

[0027] It also includes a narrow tube chamber 102. There are multiple mixing chambers 101. The multiple mixing chambers 101 are connected through the narrow tube chamber 102. The two ends of the narrow tube chamber 102 gradually shrink toward the center.

[0028] When the gas enters the contraction section of the narrow tube chamber 102, the flow rate will increase, the pressure will decrease, and the distance between different gas molecules will be relatively shortened, which is conducive to mixing; when the gas enters the expansion section of the narrow tube chamber 102 and the mixing chamber 101, the flow rate will slow down, the pressure will rise, and the gas molecules will have more time and space to fully mix.

[0029] The system further includes a porous distributor 104 . There are a plurality of porous distributors 104 , which are respectively installed at the connection point between each mixing chamber 101 and the narrow tube chamber 102 .

[0030] The gas input from each gas storage tank first passes through the porous distributor 104 and is dispersed into numerous small airflows. These small airflows enter the main body of the mixing chamber 101 in a more uniform state, avoiding the situation where the local gas concentration is too high or too low due to the concentrated influx of gas directly from the air inlet.

[0031] Taking propane and ethylene gases as an example, after being dispersed by the porous distributor 104, they no longer enter the chamber in the form of larger air masses, but are distributed in the chamber in the form of uniform small airflows. In this way, when they are subsequently mixed with other gases, they can more evenly contact and mix with the fine airflows of other gases, further improving the uniformity of the entire mixing process.

[0032] The multiple gas cylinders in the gas storage container store different types of gases (such as methane, propane, ethylene, hydrogen and other combustible gases and air). The materials of these gas cylinders have good pressure resistance and corrosion resistance to ensure the safe storage of gas.

[0033] Flow control components are installed on the pipelines leading from each gas storage container to the mixing chamber 101. By precisely adjusting the valve opening, the output flow of each gas can be controlled. The different gases flow from their respective cylinders in a predetermined ratio and are delivered through the pipelines to the mixing chamber 101.

[0034] In the mixing chamber 101 and its ancillary structures, the gas first enters the porous distributor 104 provided at the connection point between each mixing chamber 101 and the narrow tube chamber 102, is dispersed into numerous small air flows, and enters the main body of the mixing chamber 101 in a uniform state to avoid uneven local gas concentration.

[0035] Then, under the guidance of the guide plate 103, the gas flows along a specific spiral path, constantly changing the flow direction, and frequently collides and cross-mixes with the gas in other parts of the mixing chamber 101, promoting faster and more complete uniform mixing of different gases at the molecular level.

[0036] Multiple mixing chambers 101 are connected through narrow tube chambers 102. When the gas passes through the narrow tube chamber 102, its contraction section will accelerate the flow rate and reduce the pressure, and the distance between different gas molecules will be relatively shortened, which is conducive to mixing; when entering the expansion section and subsequent mixing chambers 101, the flow rate slows down and the pressure rises, and the gas molecules have more time and space to fully mix. Finally, the gas distribution device 1 configures mixed gases of different concentrations according to standard requirements and transports them to the connection point between the middle end of the connecting pipe 4 and the gas distribution device 1.

[0037] A collection device 5 is provided on the other side of the flame arrester 3 . A connecting pipe 4 is also provided between the collection device 5 and the flame arrester 3 . The collection device 5 is electrically connected to an analysis instrument 6 .

[0038] The collection device 5 includes:

[0039] Flame speed sensor: installed on the wall of the connecting pipe 4 on the other side of the flame arrester 3, it monitors the moving speed of the flame front through the reflection, refraction and other characteristics of light, thereby obtaining flame speed data.

[0040] Explosion pressure sensor: It is also installed on the wall of the connecting pipe 4, close to the flame arrester 3. Based on the conversion relationship between pressure and electrical quantities (such as capacitance, resistance, etc.), when subjected to explosion pressure, the electrical quantities inside the sensor change. By measuring this change, the explosion pressure value is determined, and the remaining explosion pressure after passing through the flame arrester 3 is monitored in real time.

[0041] Data transmission line: The line that transmits the data collected by the flame speed sensor and the explosion pressure sensor to the analytical instrument 6 must have good anti-interference ability and data transmission stability to ensure that the collected data can be accurately transmitted to the analytical instrument 6 for subsequent analysis.

[0042] The analytical instrument 6 includes:

[0043] Data receiving module: responsible for receiving data transmitted by the acquisition device 5 through the data transmission line, with corresponding interfaces and protocols, and can accurately identify and receive different types of data such as flame speed and explosion pressure.

[0044] Data analysis module: performs various analysis and processing operations on the received data, such as data filtering and denoising, to improve data quality. It then performs corresponding calculations based on analysis requirements, such as calculating the flame speed change rate and explosion pressure change rate at different times. It can also draw flame speed and explosion pressure curves to analyze the explosion-resistant performance of the flame arrester 3 through intuitive graphical display.

[0045] Result output module: outputs the analysis results in a suitable form, such as displaying analysis reports, curve graphs on the display screen, etc., or stores the results in a local database or other storage media for subsequent reference and further analysis.

[0046] A safety protection device 7 is provided on the outside of the flame arrester 3 , and the safety protection device 7 is used to seal the outside of the flame arrester 3 .

[0047] The safety protection device 7 includes:

[0048] Backfire arrester: Installed on the pipeline between the gas distribution device 1 and the ignition device 2, or in other key locations where flame backfire may occur, the working principle of the backfire arrester is to prevent the flame from propagating in the reverse direction through a special structural design (such as the use of a check valve, cooling medium, etc.). When the flame attempts to return to the gas distribution device 1 and other areas, the backfire arrester can cut off the flame path in time to protect the safety of the gas distribution device 1 and other upstream components.

[0049] Fire dampers: These are installed around the test area and are usually made of high-temperature resistant and fire-resistant materials, such as ceramic fiber and steel plates. The function of the fire dampers is to block possible flames. During the ignition and explosion process, even if the flames break through other protective measures and spread outward, the fire dampers can limit the flames to a certain range, reducing the harm of the flames to the surrounding environment and personnel.

[0050] Safety doors: These are sealed doors with fire and explosion-proof features, installed at the entrances and exits of the test site. Closing the safety doors before the test begins isolates the test area from the outside world. This prevents dangerous conditions like flames and explosions from reaching the outside world during the test, while also preventing external factors (such as intrusion and airflow disturbances) from interfering with the test.

Claims

1. A flame arrester explosion resistance performance detection device, comprising a gas distribution device (1), an ignition device (2), and a flame arrester (3), characterized in that: Also includes, A mixing chamber (101) is connected to a plurality of gas cylinders at one end and is in communication with a connection between the ignition device (2) and the flame arrester (3) at the other end; The guide plate (103) is tightly fitted on the inner wall of the mixing chamber (101) and surrounds the inner wall of the mixing chamber (101) for at least one circle to form a continuous spiral structure.

2. A flame arrester explosion resistance performance detection device according to claim 1, characterized in that: It also includes a narrow tube chamber (102), there are multiple mixing chambers (101), the multiple mixing chambers (101) are connected through the narrow tube chamber (102), and the two ends of the narrow tube chamber (102) are gradually contracted toward the center.

3. A flame arrester explosion resistance performance detection device according to claim 2, characterized in that: It also includes a porous distributor (104), and there are multiple porous distributors (104), which are respectively installed at the connection point between each mixing chamber (101) and the narrow tube chamber (102).

4. A flame arrester explosion resistance performance detection device according to claim 3, characterized in that: The ignition device (2) is arranged on one side of the flame arrester (3), a connecting pipe (4) is provided between the ignition device (2) and the flame arrester (3), and the gas distribution device (1) is connected to the middle end of the connecting pipe (4).

5. The flame arrester explosion resistance performance detection device according to claim 4, characterized in that: A collection device (5) is provided on the other side of the flame arrester (3), a connecting pipe (4) is also provided between the collection device (5) and the flame arrester (3), and the collection device (5) is electrically connected to an analysis instrument (6).

6. A flame arrester explosion resistance performance detection device according to claim 5, characterized in that: A safety protection device (7) is provided on the outside of the flame arrester (3), and the safety protection device (7) is used to seal the outside of the flame arrester (3).

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