CN113092048B - Floating disc antiknock performance test equipment and test method - Google Patents
Floating disc antiknock performance test equipment and test method Download PDFInfo
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- CN113092048B CN113092048B CN202110400611.5A CN202110400611A CN113092048B CN 113092048 B CN113092048 B CN 113092048B CN 202110400611 A CN202110400611 A CN 202110400611A CN 113092048 B CN113092048 B CN 113092048B
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Abstract
The invention discloses a floating plate antiknock performance test device, which relates to the technical field of oil and gas storage and transportation equipment and safety, and comprises the following components: the pressure container is provided with a sealed cavity, and the cavity in the pressure container is sequentially used for containing a liquid medium, a tested floating disc and a combustible gas medium from bottom to top; an explosion initiator for igniting a combustible gaseous medium within the pressure vessel; the invention also provides a floating disc antiknock performance test method based on the floating disc antiknock performance test equipment, which comprises the following steps: the method comprises the following steps: a liquid medium, a tested floating disc and a combustible gas medium are sequentially arranged in the pressure container from bottom to top; step two: detonating a combustible gaseous medium in the pressure vessel; step three: injecting inert gas into the pressure container, and removing combustible gas media left in the pressure container; step four: the device and the method for testing the antiknock performance of the floating disc can achieve the purpose of testing the antiknock performance of the floating disc.
Description
Technical Field
The invention relates to the technical field of oil and gas storage and transportation equipment and safety, in particular to floating disc antiknock performance testing equipment and a testing method.
Background
The floating disc is a gas-liquid isolating component which is arranged above the liquid level of the storage tank, is used for isolating a liquid phase from a gas phase at the top of the storage tank, has position self-adaption and regulation capabilities, can normally run without obstruction on the full stroke between the lowest liquid level and the highest liquid level, and is in a horizontal floating state when being lifted and stopped; the floating disc has great significance to the safety of the storage tank, if the floating disc can not have serious problems of tearing, deformation, warping, holes and the like under the impact of explosive load, the floating disc can keep enough rigidity per se, and the floating disc can be used as a blocker for the propagation of gas phase space explosion accidents to a liquid layer; however, at present, no literature standard for the floating disc antiknock performance evaluation method is published at home and abroad, and experimental data and evaluation criterion research are lacked.
Disclosure of Invention
The invention aims to provide a floating disc antiknock performance testing device and a floating disc antiknock performance testing method, which are used for solving the problems in the prior art and achieving the purpose of testing the antiknock performance of a floating disc.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a floating plate antiknock performance test device, comprising:
the pressure container is internally provided with a sealed cavity, and the cavity in the pressure container is sequentially used for containing a liquid medium, a tested floating disc and a combustible gas medium from bottom to top;
an explosion initiator for igniting a combustible gaseous medium within the pressure vessel.
And further, the device also comprises a data testing collector which is used for testing the explosion pressure and the strain of the tested floating disc and collecting the pressure data and the strain data.
Further, the pressure vessel comprises a cylinder, an upper sealing head and a lower sealing head, the upper sealing head and the lower sealing head are respectively connected to two ends of the cylinder, and the upper sealing head can be detached.
The gas cylinder is used for containing different types of gas, each gas cylinder is communicated with the main gas pipeline through a gas pipeline, each branch gas pipeline is provided with a mass flow controller and a valve, and a gas outlet of the main gas pipeline is communicated with the cavity of the pressure container.
Further, the data test collector includes collector, at least one foil gage and at least one pressure sensor, pressure sensor set up in the pressure vessel and be located in the space more than the floating plate of receiving examination, the foil gage be used for set up in on the floating plate of receiving examination, pressure sensor with the foil gage all with the collector electricity is connected.
Further, an air outlet and a liquid outlet are formed in the pressure container, the upper sealing head and the barrel are subjected to sealing treatment, and the upper sealing head and the barrel are connected through flanges and bolts.
And the mass flow controllers, the valves, the explosion initiator and the data test collector are electrically connected with the industrial personal computer.
Furthermore, a bursting disc overpressure relief device is arranged on the upper end enclosure, and a liquid level observation window is arranged on the cylinder body.
Further, at least one of the gas cylinders is used for containing non-combustible inert gas.
The invention also provides a floating disc antiknock performance test method based on the floating disc antiknock performance test equipment, which comprises the following steps:
the method comprises the following steps: a liquid medium, a tested floating disc and a combustible gas medium are sequentially arranged in the pressure container from bottom to top;
step two: detonating a combustible gaseous medium in the pressure vessel;
step three: injecting inert gas into the pressure container, and removing combustible gas media left in the pressure container;
step four: the test float was removed and its topography recorded.
Compared with the prior art, the invention has the following technical effects:
the invention discloses a floating plate antiknock performance test device and a test method, the device comprises a pressure container and an explosion initiator, a tested floating plate is arranged in the pressure container to simulate the floating plate in a real use state, and a liquid medium, the tested floating plate and a combustible gas medium are sequentially arranged in the pressure container from bottom to top; then, a combustible gas medium in the pressure container is detonated by an explosion initiator so that the floating disc is impacted by explosion, and finally, the tested floating disc is taken out and the appearance of the tested floating disc is recorded so as to facilitate the analysis of the anti-explosion performance of a subsequent technician; therefore, the equipment and the method for testing the antiknock performance of the floating disc can achieve the purpose of testing the antiknock performance of the floating disc.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of a floating plate antiknock performance testing device provided by the present invention;
in the figure: 1-pressure container, 2-liquid medium, 3-tested floating plate, 4-explosion initiator, 5-gas cylinder, 6-mass flow controller, 7-valve, 8-branch gas pipeline, 9-total gas pipeline, 10-drain valve, 11-exhaust valve, 12-pressure sensor, 13-hoisting equipment, 14-industrial personal computer and 15-collector.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide equipment and a method for testing the antiknock performance of a floating disc, which are used for solving the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
The present embodiment provides a floating plate antiknock performance test apparatus, as shown in fig. 1, including:
the pressure container 1 is used for containing a liquid medium 2, a tested floating disc 3 and a combustible gas medium from bottom to top in sequence; the pressure vessel 1 is used for providing an explosion space for the test, the liquid medium 2 is preferably an aqueous medium to improve the safety and the feasibility, the tested floating disc 3 is placed on the liquid medium 2, and the tested floating disc 3 is in a free floating state of full liquid;
the explosion initiator 4 is used for igniting the combustible gas medium in the pressure container 1, and the explosion initiator 4 detonates the combustible gas medium by utilizing the principles of high-energy electric spark discharge, micro chemical explosion and the like; and parameters such as ignition energy, ignition delay time and the like can be adjusted and controlled.
The tested floating disc 3 is arranged in the pressure container 1 to simulate the floating disc in a real use state, and the liquid medium 2, the tested floating disc 3 and the combustible gas medium are sequentially arranged in the pressure container 1 from bottom to top; then, the combustible gas medium in the pressure container 1 is detonated by the explosion initiator 4 so that the floating disc is impacted by explosion to test the anti-explosion performance of the floating disc, and finally, the tested floating disc 3 is taken out and the appearance of the floating disc is recorded so as to facilitate the analysis of the anti-explosion performance of a subsequent technician; therefore, the floating plate antiknock performance test equipment provided by the embodiment can realize the purpose of testing the antiknock performance of the floating plate.
Further, the device also comprises a data testing collector which is used for testing the explosion pressure and the strain of the floating disc 3 to be tested and collecting the pressure data and the strain data, so that the working personnel can know the explosion pressure generated in the explosion process and the strain process of the floating disc 3 to be tested when the floating disc is impacted by explosion more clearly.
Further, pressure vessel 1 includes barrel, upper cover and low head, and upper cover and low head connect respectively in the both ends of barrel, and the upper cover can be dismantled to in to jar internal liquid medium 2 and the floating plate 3 of experimenting of setting up, and press from both sides between upper cover and barrel and be equipped with sealed the pad in order to strengthen sealing performance.
Further, the pressure vessel 1 is designed, manufactured, inspected and supervised according to national standards and technical regulations such as GB150-2011 pressure vessel TSG21-2016 fixed pressure vessel safety technology supervision regulations.
Furthermore, a hoisting device 13 is provided, and the hoisting device 13 is used for carrying out operation when assembling and disassembling the pressure vessel 1 or installing the floating plate 3 to be tested in the cylinder body.
Furthermore, the controlled explosion in the closed container is constructed by adjusting the concentration ratio of the combustible medium to the oxidant, namely, the maximum explosion pressure, the rising rate of the maximum explosion pressure and the explosion intensity can be estimated and set according to the combustion and explosion theory. Furthermore, the concentration of the combustible medium can be precisely measured by using instruments such as a precise mass flow meter, an online gas chromatograph, an online gas concentration analyzer and the like so as to meet the requirement of precise measurement of the concentration of the combustible medium.
Further, in order to make the combustible gas medium of different concentrations, still include a combustible gas preparation ware, the combustible gas preparation ware includes a plurality of gas cylinder 5 and a total gas pipeline 9, be used for installing different kinds of gas in each gas cylinder 5 respectively, each gas cylinder 5 all communicates on total gas pipeline 9 through a gas pipeline 8, all be provided with mass flow controller 6 and valve 7 on each gas pipeline 8, valve 7 is preferably check valve, the gas outlet of total gas pipeline 9 communicates in pressure vessel 1's cavity, control the volume of letting in gas through mass flow controller 6 and valve 7, in order to satisfy different test conditions.
Further, the data test collector comprises a collector 15, at least one strain gauge and at least one pressure sensor 12, the collector 15 is preferably a high-speed data collection system, the pressure sensor 12 is preferably a high-frequency dynamic pressure sensor 12, the pressure sensor 12 is arranged in the pressure container 1 and located in a space above the floating disc 3 to be tested, the strain gauge is used for being arranged on the floating disc 3 to be tested, the pressure sensor 12 and the strain gauge are electrically connected with the collector 15, the pressure sensors 12 are respectively arranged on the top and the side wall (above the floating disc) of the closed pressure container 1, the measuring range of the pressure sensor 12 is 1.5-2 times of the maximum explosion pressure, and the collection frequency of the collector 15 is not lower than 100 kHz.
Further, the pressure container 1 is provided with an exhaust port and a liquid discharge port, the liquid medium 2 is discharged through the liquid discharge port after the test is finished, the combustible gas medium is discharged through the exhaust port, the exhaust pipe connected with the exhaust port is provided with an exhaust valve 11, and the drain pipe connected with the liquid discharge port is provided with a drain valve 10.
Furthermore, the system also comprises an industrial personal computer 14, wherein each mass flow controller 6, each valve 7, the explosion initiator 4 and the data testing collector are electrically connected with the industrial personal computer 14, and the industrial personal computer 14 is adopted for remote control, so that the personal safety of experimenters is ensured; the industrial personal computer 14 is mainly used for the precise control of mass flow of combustible media and oxidants, the measurement of concentration of combustible gas media, the parameter setting and the time sequence control of ignition and detonation and high-speed data acquisition, realizes automatic one-key operation, and ensures the safety of experiments.
Furthermore, the cover body is provided with a rupture disk overpressure relief device, so that the pressure container 1 is prevented from being damaged due to explosion overpressure, and the tank body is provided with a liquid level observation window, so that a worker can conveniently check the liquid level in the tank body outside the tank body.
Further, at least one gas bottle 5 is used for containing non-combustible inert gas, and specifically, the four gas bottles 5 are respectively used for containing nitrogen, methane gas, air and oxygen; after the explosion is finished, a valve 7 on a gas bottle 5 provided with nitrogen is opened, the gas medium in the container after the explosion is blown by the nitrogen, and the blowing process of the nitrogen can be closed after the gas in the container is completely replaced.
Example two
The embodiment provides a method for testing the antiknock performance of a floating plate based on the antiknock performance testing equipment of the first embodiment, which includes the following steps:
the method comprises the following steps: a liquid medium 2, a tested floating disc 3 and a combustible gas medium are sequentially arranged in the pressure container 1 from bottom to top;
step two: detonating the combustible gaseous medium in the pressure vessel 1;
step three: injecting inert gas into the pressure container 1, and removing the combustible gas medium left in the pressure container 1; so as to ensure that secondary explosion cannot occur;
step four: and taking out the tested floating disc 3, recording the appearance of the tested floating disc, and analyzing the antiknock performance of the tested floating disc by combining the pressure data acquired by the acquisition unit 15 and the strain data of the floating disc.
More specific test procedures were as follows:
the method comprises the following steps: assembling the floating disc antiknock performance testing equipment, wherein a cover body in the pressure container 1 is not assembled temporarily;
step two: the explosion initiator 4 and the data test collector are tested before test to ensure that the explosion initiator and the data test collector operate normally completely;
step three: injecting liquid into the pressure container 1 to a set height;
step four: putting a tested floating disc 3 into the pressure container 1; if the experiment needs, sticking a strain gauge on the surface of the floating plate in advance;
step five: connecting the upper end enclosure to one end of the cylinder;
step six: injecting combustible gas medium with set concentration into the cylinder by using a combustible gas producer;
step seven: detonating the combustible gas medium through the explosion initiator 4, and synchronously starting the data acquisition process;
step eight: injecting inert gas into the pressure container 1, and purging the combustible gas medium left in the container;
step nine: taking out the floating disc 3 to be tested;
step ten: and recording the appearance of the floating disc after the test.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (6)
1. The utility model provides a floating plate antiknock performance test equipment which characterized in that: the method comprises the following steps:
the pressure container is internally provided with a sealed cavity, and the cavity in the pressure container is sequentially used for containing a liquid medium, a tested floating disc and a combustible gas medium from bottom to top;
an explosion initiator for igniting a combustible gaseous medium within the pressure vessel;
the device also comprises a data test collector which is used for testing the explosion pressure and the strain of the tested floating disc and collecting pressure data and strain data;
the pressure container comprises a cylinder body, an upper sealing head and a lower sealing head, the upper sealing head and the lower sealing head are respectively connected to two ends of the cylinder body, and the upper sealing head is detachable;
the gas producer comprises a plurality of gas cylinders and a main gas pipeline, wherein different types of gases are respectively arranged in the gas cylinders, each gas cylinder is communicated with the main gas pipeline through a gas pipeline, each gas pipeline is provided with a mass flow controller and a valve, and a gas outlet of the main gas pipeline is communicated with a cavity of the pressure container;
at least one of the gas cylinders is used for containing non-combustible inert gas.
2. The floating plate antiknock performance test apparatus of claim 1, wherein: the data test collector comprises a collector, at least one strain gauge and at least one pressure sensor, wherein the pressure sensor is arranged in the pressure container and is positioned in the space above the tested floating disc, the strain gauge is used for being arranged on the tested floating disc, and the pressure sensor and the strain gauge are electrically connected with the collector.
3. The floating plate antiknock performance test apparatus of claim 1, wherein: the pressure container is provided with an air outlet and a liquid outlet, the upper sealing head and the barrel are sealed, and the upper sealing head and the barrel are connected through a flange and a bolt.
4. The floating plate antiknock performance test apparatus of claim 1, wherein: the mass flow controllers, the valves, the explosion initiator and the data test collector are all electrically connected with the industrial personal computer.
5. The floating plate antiknock performance test apparatus of claim 1, wherein: the upper end enclosure is provided with a rupture disk overpressure relief device, and the barrel is provided with a liquid level observation window.
6. A floating plate antiknock performance test method based on the floating plate antiknock performance test equipment of any one of claims 1 to 5, characterized by comprising: the method comprises the following steps:
the method comprises the following steps: a liquid medium, a tested floating disc and a combustible gas medium are sequentially arranged in the pressure container from bottom to top;
step two: detonating a combustible gaseous medium in the pressure vessel;
step three: injecting inert gas into the pressure container, and removing combustible gas media left in the pressure container;
step four: the test float was removed and its topography recorded.
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