CN112946021A - Visual square pipe explosive dust water smoke explosion suppression experimental apparatus - Google Patents
Visual square pipe explosive dust water smoke explosion suppression experimental apparatus Download PDFInfo
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- CN112946021A CN112946021A CN202110160717.2A CN202110160717A CN112946021A CN 112946021 A CN112946021 A CN 112946021A CN 202110160717 A CN202110160717 A CN 202110160717A CN 112946021 A CN112946021 A CN 112946021A
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- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
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Abstract
The invention discloses a visual square-tube gunpowder dust water mist explosion suppression experimental device, and particularly relates to the technical field of explosion experimental devices. The utility model provides a visual square tub of explosion suppression experimental apparatus of explosive dust water smoke, including both sides open-ended explosion jar, the opening part of explosion jar all can be dismantled and be connected with the glass window, explosion jar intercommunication has the inlet tube, be equipped with the water smoke nozzle on the inlet tube, the bottom of explosion jar is equipped with the mechanism of dusting, the mechanism of dusting can be to the internal injection dust of explosion jar, the pressure release ring of round platform shape is worn to be equipped with by the upside of explosion jar, be equipped with the rupture disk in the pressure release ring, wear to be equipped with temperature sensor in the explosion jar, pressure sensor and electrode, still the intercommunication has vacuum tube on the lateral wall of explosion jar, install the needle valve on the vacuum tube, still install the negative pressure table on the vacuum tube between. The technical scheme of the invention solves the problem that no proper water mist explosion suppression experimental device exists at present, and can be used for research on water mist explosion suppression work.
Description
Technical Field
The invention relates to the technical field of explosion experiment devices, in particular to a visual square-tube gunpowder dust water mist explosion suppression experiment device.
Background
The explosives and powders can form a large amount of suspended dust in the mixing, belt-type drying, packaging and other processes, and the suspended dust is more sensitive than the explosives and powders under the stimulation of external energy, so that the method is an important reason for causing the explosives and powders to explode. The explosion suppression technology can effectively suppress the accidents at the early stage and also can effectively reduce the intensity of the explosion shock wave. The existing explosion suppression technology comprises water medium explosion suppression, inert gas explosion suppression and inert dust explosion suppression, however, the inert gas and the inert dust are not suitable for explosion suppression of explosives and powders in principle, and the preferred medium for explosion suppression of the explosives and powders is water medium. The fire-proof and explosion-proof technical methods of the traditional fire hydrant water supply, the automatic rain-sprinkling, the automatic water turning bucket, the water curtain system and the like which take water as a medium mainly extinguish fire by spraying water (namely large-diameter water drops) instead of suppressing explosion, have low water heat absorption efficiency in the fire extinguishing process, can not effectively suppress the fire and explosive explosion accidents, have the outstanding advantages of high cooling efficiency, good energy absorption effect, wide spraying range, environmental friendliness and the like, and are very suitable for suppressing explosion of fire and explosive suspended dust.
However, the research work of explosion suppression of the explosive suspended dust water mist is still little, and one important factor is that the explosive dust explosion pressure is too high, so that no proper research means and experimental device are available, and further the development of the explosive production and related technical fields is restricted.
Disclosure of Invention
The invention aims to provide a visual square-tube gunpowder and dust water mist explosion suppression experimental device, and solves the problem that no proper water mist explosion suppression experimental device exists at present.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a visual square tub of explosive dust water smoke explosion suppression experimental apparatus, includes both sides open-ended explosion jar, the opening part of explosion jar all can be dismantled and is connected with the glass window, the top intercommunication of explosion jar has the inlet tube, be equipped with the water smoke nozzle that is located the explosion jar on the inlet tube, the bottom of explosion jar is equipped with the mechanism of dusting, the mechanism of dusting can spray the dust to the explosion jar in, the pressure release ring of round platform shape is worn to be equipped with by the upside of explosion jar, be equipped with the rupture disk in the pressure release ring, wear to be equipped with temperature sensor, pressure sensor and the electrode that one end is located the explosion jar on the lateral wall that is close to the water smoke nozzle in the explosion jar, still the intercommunication has the evacuation pipe on the lateral wall of explosion jar, install the needle valve on the evacuation pipe, still install the negative pressure table on the evacuation pipe between.
The principle and the effect of the technical scheme are as follows: put into the explosion jar with the powder of the sample that awaits measuring, recycle evacuation pipe and take out to vacuum in with the explosion jar, then ignite the electrode wiring, open the mechanism of dusting again, utilize the mechanism of dusting to raise the sample powder that awaits measuring in the explosion jar, utilize inlet tube and water smoke nozzle to spray water smoke in to the explosion jar at last to accomplish the dust explosion experiment, utilize temperature sensor and pressure sensor can realize the collection of experimental data.
Further, the powder spraying mechanism comprises a gas storage tank and a gas pump connected with the gas storage tank, a main gas pipe communicated with the bottom of the explosion tank is connected to the gas pump, a dust disc is arranged at the bottom of the explosion tank in a penetrating mode, and a stepped hole communicated with the main gas pipe is formed in the center of the dust disc.
Furthermore, a powder spraying umbrella cap is inserted into the stepped hole, the lower end of the powder spraying umbrella cap is in a stepped shape, a plurality of air passages are formed in the outer surface of the lower side of the powder spraying umbrella cap, and the orthographic projection area of the upper portion of the powder spraying umbrella cap is larger than the area of the stepped hole.
Further, the top of the dust disc is provided with a circular arc-shaped concave surface connected with the stepped hole, the periphery of the concave surface is tangent to the inner wall of the explosion tank, and the concave surface is polished.
Through the arrangement, the powder of the sample to be detected can be received by the dust tray, and simultaneously, the powder of the sample to be detected is lifted by the gas storage tank and the gas pump; the direction of high-pressure gas can be effectively changed by means of the powder spraying umbrella cap, so that the high-pressure gas can lift the sample powder to be tested in the dust tray, and the dust lifting effect is improved; the concave surface of the dust disc is tangent to the inner wall of the explosion tank, the polishing treatment of the concave surface reduces the blocking of dust rising, and the dust rising effect can be further improved.
Furthermore, the main air pipe is connected with a three-way pipe, an air pipe branch pipe is connected between one end of the three-way pipe and the air pump, the air pipe branch pipe is provided with a check valve and a pressure gauge, the other end of the three-way pipe is connected with a drain pipe, a waste liquid collecting box is arranged at the free end of the drain pipe, and a valve is arranged on the drain pipe.
Through the setting, the accessible is closed the valve and is tested to open the valve after going up the experiment and collect the waste liquid that produces after the experiment, thereby be favorable to continuous experiment, and avoided the problem of experiment waste material polluted environment.
Compared with the prior art, the beneficial effect of this scheme:
1. the scheme can realize the experimental research of inhibiting dust explosion by water mist, and realize visual observation by utilizing the glass window, thereby being beneficial to knowing the dust explosion process and researching the water mist explosion suppression method.
2. The scheme can collect relevant experimental data in the experimental process, thereby being beneficial to researching reasonable parameters of water mist explosion suppression and improving the feasibility of actual operation.
Drawings
FIG. 1 is a front view of a visual square-tube gunpowder dust water mist explosion suppression experimental device;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a sectional view of the explosion can in this embodiment;
FIG. 4 is a schematic structural diagram of the water inlet pipe at the thread position in the embodiment;
fig. 5 is a schematic structural diagram of the powder spraying umbrella cap in the embodiment.
Detailed Description
The present invention will be described in further detail below by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises an explosion tank 1, a glass window 2, a sealing gasket 3, a sealing plate 4, a cover plate 5, a water inlet pipe 6, a high-pressure water tank 7, a nitrogen gas bottle 8, a rubber gasket 9, a baffle ring 10, a limiting groove 11, a positioning nut 12, a water mist nozzle 13, a gas storage tank 14, a gas pump 15, a main gas pipe 16, a dust disc 17, a powder spraying umbrella cap 18, a gas passage 19, a three-way pipe 22, a check valve 21, a pressure gauge 22, a water drain pipe 23, a waste liquid collecting box 24, a pressure relief ring 25, a temperature sensor 26, a pressure sensor 27, an electrode 28, a vacuum pumping pipe 29, a needle valve 30, a negative pressure.
Examples
As shown in figures 1 and 3: the utility model provides a visual square tub of explosive dust water smoke explosion suppression experimental apparatus, both sides all have open-ended explosion jar 1 around including, glass window 2 has all been placed to the opening part of explosion jar 1, both sides all support tightly around every glass window 2 have seal gasket 3 made by silica gel, can be when the experiment with the help of seal gasket 3 to the effect of its buffering unloading of shock wave that glass window 2 received, the life-span of glass window 2 has been prolonged, and can also improve glass window 2 and the leakproofness between the explosion jar 1. The front side wall and the rear side wall of the explosion tank 1 are both in threaded connection with abutting bolts, the abutting bolts are connected with stainless steel pressing sheets 32, one ends of the stainless steel pressing sheets are positioned outside the two glass windows 2, and the sealing gasket 3 can be abutted against the glass windows 2 and the explosion tank 1 through the stainless steel pressing sheets 32. Explosion jar 1 adopts the rectangle structure, and explosion jar 1's upper and lower both sides all are equipped with closing plate 4, and equal bolted connection has apron 5 on every closing plate 4.
The sealing plate 4 at the top of the explosion tank 1 and the center of the cover plate 5 are jointly penetrated and provided with a first threaded hole, the first threaded hole is internally threaded with a water inlet pipe 6, the top of the water inlet pipe 6 is connected with a high-pressure water tank 7 positioned outside the explosion tank 1, one side of the high-pressure water tank 7 is connected with a gas inlet pipe, and the gas inlet pipe is connected with a nitrogen cylinder 8. As shown in fig. 4, the middle part of inlet tube 6 is equipped with the screw thread with 5 threaded connection of apron, and the middle part of inlet tube 6 still threaded connection have rubber gasket 9 and fixed fender ring 10 that sets up the gasket top, and it has the recess with 9 matched with of rubber gasket to open on the apron 5, and circumference interval is opened on the screw thread of baffle top has four vertical spacing grooves 11 that set up, and threaded connection has set nut 12 on the screw thread of baffle top. The lower end of the water inlet pipe 6 is provided with a water mist nozzle 13 positioned in the explosion tank 1.
As shown in the attached figures 2 and 5, the bottom of the explosion tank 1 is provided with a powder spraying mechanism which can spray dust into the explosion tank 1, the powder spraying mechanism comprises a gas storage tank 14 positioned outside the explosion tank 1 and an air pump 15 connected with the gas storage tank 14, the air pump 15 is connected with a main gas pipe 16 communicated with the bottom of the explosion tank 1, the bottom of the explosion tank 1 is penetrated with a dust tray 17 embedded on a cover plate 5 at the lower side of the explosion tank 1, a sealing plate 4 at the lower side is provided with a through hole tangent to the top of a concave surface in the dust tray 17, the center of the dust tray 17 is provided with a step hole communicated with the main gas pipe 16 and the through hole, a powder spraying umbrella cap 18 is inserted in the step hole, the lower end of the powder spraying umbrella cap 18 is in a step shape, the outer surface of the lower side of the powder spraying umbrella cap 18 is provided with a plurality of gas passages 19, the frontal projection area, so that the gas entering from the main gas pipe 16 can act on the powder spraying umbrella cap 18 to refract and disperse the gas. The top of the dust disc 17 is provided with a circular arc concave surface connected with the stepped hole, the lowest part of the concave surface is positioned below the top of the stepped hole, and the concave surface is polished. The main air pipe 16 is connected with a three-way pipe 22 close to the bottom of the explosion tank 1, an air pipe branch pipe is connected between one end of the three-way pipe 22 and the air pump 15, the air pipe branch pipe is provided with a check valve 21 and a pressure gauge 22, the other end of the three-way pipe 22 is connected with a drain pipe 23, the free end of the drain pipe 23 is provided with a waste liquid collecting box 24, and the drain pipe 23 is provided with a valve.
The upper side of the explosion tank 1 is provided with a circular truncated cone-shaped pressure relief ring 25 in a penetrating manner, the pressure relief ring 25 is provided with a rupture disc, the problem that the explosion tank 1 or the glass window 2 is cracked due to overlarge pressure in the experimental process can be prevented by using the rupture disc, and the service life of the device is prolonged; the side wall of the explosion tank 1 close to the water mist nozzle 13 is provided with a temperature sensor 26, a pressure sensor 27 and two symmetrically arranged electrodes 28, one end of each electrode 28 is located in the explosion tank 1, the temperature sensor 26, the pressure sensor 27 and each electrode 28 are respectively coated with a mounting seat in threaded connection with the explosion tank 1, the side wall of the explosion tank 1 is further communicated with a vacuum tube 29, the vacuum tube 29 is provided with a needle valve 30, and the vacuum tube 29 between the needle valve 30 and the explosion tank 1 is further provided with a negative pressure gauge 31.
The experimental method of the experimental device comprises the following steps:
s1, screwing the mounting seats provided with the temperature sensor 26, the pressure sensor 27 and the electrode 28 into corresponding positions respectively before carrying out the explosion experiment, and winding raw adhesive tapes on the threads of the mounting seats so as to maintain the sealing performance of the mounting seats;
s2, opening the cover plate 5 on the lower side of the explosion tank 1, and distributing the powder of the sample to be detected into the concave surface of the dust tray 17;
s3, placing a 3mm rubber gasket 9 between the sealing plate 4 and the cover plate 5 on the lower side of the explosion tank 1, and then screwing and sealing the bolt between the sealing plate 4 and the cover plate 5 to ensure that the sealing performance is good;
s4, connecting a wire between the two motors and connecting an igniter;
s5, opening the needle valve 30, connecting a vacuum pump to the vacuumizing pipe 29, and vacuumizing the interior of the explosion tank 1 by using the vacuum pump to ensure that the pressure in the interior is-0.08 MPa;
s6, closing the needle valve 30 and the valve, and opening the nitrogen cylinder 8, the high pressure water tank 7, the air pump 15, the air storage tank 14 and the igniter, thereby realizing the water mist and dust explosion suppression experiment of the sample to be tested, collecting relevant data generated in the experiment process in real time through the temperature sensor 26 and the pressure sensor 27, simultaneously utilizing the glass window 2 to enable researchers to clearly complete and record corresponding images generated in the experiment process, and utilizing the video camera to record and analyze.
After the experiment is accomplished, can open the valve and close air pump 15, gas holder 14 and ignition ware to can make the waste water that produces in the experimentation get into in the waste liquid collecting box 24 and collect, and keep nitrogen cylinder 8 and high pressure water tank 7 to open the efficiency that can provide the waste liquid recovery this moment, can also wash glass window 2 simultaneously.
The foregoing are merely examples of the present invention and common general knowledge of known specific structures and/or features of the schemes has not been described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (5)
1. The utility model provides a visual square pipe explosive dust water smoke explosion suppression experimental apparatus which characterized in that: including both sides open-ended explosion jar, the opening part of explosion jar all can be dismantled and be connected with the glass window, the top intercommunication of explosion jar has the inlet tube, be equipped with the water smoke nozzle that is located explosion jar on the inlet tube, the bottom of explosion jar is equipped with the mechanism of dusting, the mechanism of dusting can spray the dust in to explosion jar, the pressure release ring of round platform shape is worn to be equipped with by the upside of explosion jar, be equipped with the rupture disk in the pressure release ring, wear to be equipped with temperature sensor, pressure sensor and the electrode that one end is located explosion jar on being close to the lateral wall of water smoke nozzle in the explosion jar, it has the evacuation pipe still to communicate on the lateral wall of explosion jar, install the needle valve on the evacuation pipe, still install the negative pressure table on the evacuation pipe between needle valve and the explosion jar.
2. The visual square-tube gunpowder and dust water mist explosion suppression experimental device according to claim 1, characterized in that: the powder spraying mechanism comprises a gas storage tank and a gas pump connected with the gas storage tank, the gas pump is connected with a main gas pipe communicated with the bottom of the explosion tank, a dust disc is arranged at the bottom of the explosion tank in a penetrating mode, and a stepped hole communicated with the main gas pipe is formed in the center of the dust disc.
3. The visual square-tube gunpowder and dust water mist explosion suppression experimental device is characterized by comprising the following components in parts by weight: the umbrella cap with the dust spraying function is characterized in that a dust spraying umbrella cap is inserted into the stepped hole in an inserted mode, the lower end of the dust spraying umbrella cap is in a stepped shape, a plurality of air passages are formed in the outer surface of the lower side of the dust spraying umbrella cap, and the forward projection area of the upper portion of the dust spraying umbrella cap is larger than the area of the stepped hole.
4. The visual square-tube gunpowder and dust water mist explosion suppression experimental device according to claim 3, characterized in that: the top of the dust disc is provided with a circular arc concave surface connected with the stepped hole, the periphery of the concave surface is tangent to the inner wall of the explosion tank, and the concave surface is polished.
5. The visual square-tube explosive dust water mist explosion suppression experimental device according to any one of claims 2 to 4, characterized in that: the air pump is characterized in that the main air pipe is connected with a three-way pipe, an air pipe branch pipe is connected between one end of the three-way pipe and the air pump, a check valve and a pressure gauge are arranged on the air pipe branch pipe, the other end of the three-way pipe is connected with a drain pipe, a waste liquid collecting box is arranged at the free end of the drain pipe, and a valve is arranged on the drain pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110160717.2A CN112946021A (en) | 2021-02-05 | 2021-02-05 | Visual square pipe explosive dust water smoke explosion suppression experimental apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110160717.2A CN112946021A (en) | 2021-02-05 | 2021-02-05 | Visual square pipe explosive dust water smoke explosion suppression experimental apparatus |
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| CN112946021A true CN112946021A (en) | 2021-06-11 |
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| CN202110160717.2A Pending CN112946021A (en) | 2021-02-05 | 2021-02-05 | Visual square pipe explosive dust water smoke explosion suppression experimental apparatus |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477094A (en) * | 2008-12-31 | 2009-07-08 | 中国科学技术大学 | Experimental device for restraining gas and dust explosion by water mist |
| CN106248733A (en) * | 2016-08-24 | 2016-12-21 | 西安科技大学 | A kind of many forms multifunctional gas, the datonation-inhibition experimental system of dust explosion |
| CN107121453A (en) * | 2017-05-25 | 2017-09-01 | 西安科技大学 | It is applicable the gas, dust explosion and datonation-inhibition experimental system of a variety of optical diagnostic methods |
| CN108362855A (en) * | 2018-02-12 | 2018-08-03 | 北京石油化工学院 | A kind of quick-fried experimental provision of dust prevention and control |
-
2021
- 2021-02-05 CN CN202110160717.2A patent/CN112946021A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477094A (en) * | 2008-12-31 | 2009-07-08 | 中国科学技术大学 | Experimental device for restraining gas and dust explosion by water mist |
| CN106248733A (en) * | 2016-08-24 | 2016-12-21 | 西安科技大学 | A kind of many forms multifunctional gas, the datonation-inhibition experimental system of dust explosion |
| CN107121453A (en) * | 2017-05-25 | 2017-09-01 | 西安科技大学 | It is applicable the gas, dust explosion and datonation-inhibition experimental system of a variety of optical diagnostic methods |
| CN108362855A (en) * | 2018-02-12 | 2018-08-03 | 北京石油化工学院 | A kind of quick-fried experimental provision of dust prevention and control |
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