CN101672724A - Air pressure type impact test instrument of safety mask - Google Patents
Air pressure type impact test instrument of safety mask Download PDFInfo
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- CN101672724A CN101672724A CN200910196521A CN200910196521A CN101672724A CN 101672724 A CN101672724 A CN 101672724A CN 200910196521 A CN200910196521 A CN 200910196521A CN 200910196521 A CN200910196521 A CN 200910196521A CN 101672724 A CN101672724 A CN 101672724A
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Abstract
The invention relates to an air pressure type impact test instrument of a safety mask, which comprises a steel ball, an emission pipe and a gas compression device. An outlet of the gas compression device is connected with the emission pipe by an excitation emission device, the inner end of the emission pipe is provided with a projection hole in which the steel ball can be arranged, and two pipeline sensors of one optical fiber velocimeter are respectively installed on the inner pipe walls of an inlet section and an outlet section of the emission pipe. The invention can accurately detect the shock strength of an armour under the impact of high-speed particles.
Description
Technical field
The present invention relates to a kind of safety eyewear tester, particularly a kind of air pressure type impact test instrument of safety mask.
Background technology
The test of face guard glass intensity has the falling sphere of employing bump or swing ball bump to test in the prior art, its method of testing is simple, but the impact strength deficiency, and accurate inadequately.
Summary of the invention
The object of the present invention is to provide a kind of air pressure type impact test instrument of safety mask, can accurately detect the impact strength of armour under high-velocity particles impacts.
For achieving the above object, design of the present invention is: high-velocity particles is under the activation pressure effect of pressure gas, launch from power valve and remove the crash tool, by measuring the moment of power valve entrance end high-velocity particles process, can calculate the speed that high-velocity particles is launched, thereby the impact of calculating converses the impact strength of armour.
The present invention is by high-velocity particles, power valve and the optical fiber velometer of gas compressing apparatus, stimulated emission device, emission.
Gas compressing apparatus comprises that an air pump, supercharge pump, three high-pressure gas cylinders, three barometers, two unidirectional electrical magnet valves and snorkel are some.At first, with the suction of equipment outer air, after the supercharge pump supercharging, pressure-air will be injected in first high-pressure gas cylinder by air pump.Three high-pressure gas cylinders connect by snorkel, and are closed by the connected sum of the snorkel between two bottles of the unidirectional solenoid control.When the unidirectional electrical magnet valve is in connected state, gases at high pressure in first high-pressure gas cylinder will be injected in second high-pressure gas cylinder, gases at high pressure in second high-pressure gas cylinder will be injected in the 3rd high-pressure gas cylinder, and the gaseous tension of three high-pressure gas cylinders will be the same this moment.The required excitation gases at high pressure of particle emission will be provided by the 3rd high-pressure gas cylinder.After the air pressure of the 3rd high-pressure gas cylinder after the particle emission reduces, open the unidirectional electrical magnet valve, gas in second high-pressure gas cylinder will add in the 3rd high-pressure gas cylinder, gas in first high-pressure gas cylinder will add in second high-pressure gas cylinder, change by the barometer monitor force, guarantee that the 3rd air pressure in the high-pressure gas cylinder is in needed pressure all the time.
The stimulated emission device comprises unidirectional electrical magnet valve, excitation pipeline and pressure switch.Provide high-pressure air source by gas compressing apparatus, opening and closing by a unidirectional solenoid control high-pressure air source.When starting the high-velocity particles emission, open the unidirectional electrical magnet valve, gases at high pressure feed rapidly in the interior air chamber of excitation pipeline.When the pressure of accumulation surpassed rated pressure that this specific pressure switch can bear and is required activation pressure, pressure switch was opened, and the gases at high pressure momentary action is gone out particle emission on particle.
High-velocity particles is that the employing diameter is the steel ball of 6mm, heavily about 0.86g, with the speed of 190m/s armour to be detected is carried out the high speed impact test.
Power valve mainly is made up of the steel pipe of an effective dimensions, and can launch the steel ball that diameter is 6mm, guarantees that steel ball has a constant crash direction.
The optical fiber velometer comprises two Fibre Optical Sensors, two photoelectrical couplers, a signal processing circuit, a single-chip microcomputer, a liquid crystal driver module and a LCD.The entrance end portion of power valve respectively installs a Fibre Optical Sensor respectively, the output of two Fibre Optical Sensors connects the input of a signal processing circuit and a single-chip microcomputer respectively behind two photoelectrical couplers, their output is through the input of a LCD of a liquid crystal driver module connection, and the display screen of LCD demonstrates elapsed-time standards and the speed of high-velocity particles between two Fibre Optical Sensors.
According to the foregoing invention design, the present invention adopts following technical proposals:
A kind of safety eyewear vapour-pressure type tester comprises steel ball, power valve and gas compressing apparatus, and its feature is being connected the import of described power valve through a stimulated emission device with the outlet of described gas compressing apparatus; Described power valve inner segment has the hole of dropping a bomb that can put into described steel ball; Two Fibre Optical Sensors of an optical fiber velometer are installed in respectively on the entrance end inner wall tube of described power valve.
The structure of above-mentioned gas compression set is: an air pump outlet connects the import of an one-level gas cylinder through a supercharging air pump, the outlet of described one-level gas cylinder connects the import of a secondary gas cylinder through an one-level retaining valve, the outlet of described secondary gas cylinder is through the import of three grades of gas cylinders of a secondary retaining valve connection, and the outlet of described three grades of gas cylinders connects the import of described stimulated emission device; On described one-level gas cylinder, secondary gas cylinder and three grades of gas cylinders a tensimeter is housed respectively.
The structure of above-mentioned stimulated emission device is: the import of a solenoid valve connects the outlet of described gas compressing apparatus, and the outlet of described solenoid valve connects the import of a convergent contour plenum chamber through connecting pipe, and the outlet of described plenum chamber connects the import of described power valve.
Above-mentioned power valve is the steel pipe of an effective length, and a pressure switch is equipped with in inflow point, and the interior diameter of steel pipe and the diameter of described steel ball are complementary.
The present invention compared with prior art, have following conspicuous outstanding feature and remarkable advantage: the gas compressing apparatus that the present invention proposes mainly is made up of three gas bombs and two-stage air pump, exciting bank is divided into the two-stage air chamber, the activation pressure that can offer high-velocity particles is stablized greatly, has guaranteed that the steel ball impact velocity is fast and stable.And the sensor in the optical fiber velometer has very strong responding ability, can realize quick, accurate, reliable detection, calculates mistiming and speed by the single-chip microcomputer fast processing then, is come out by liquid crystal display displays.This pick-up unit is applicable to a protector and various display screen glass ionization meter.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the circuit theory diagrams of one embodiment of the invention.
Embodiment
A preferred embodiment of the present invention is: referring to Fig. 1 and Fig. 2.This detector of high-speed particle impact protector measurer comprises steel ball 14, power valve 13 and gas compressing apparatus, and the outlet of described gas compressing apparatus connects the import of described power valve 13 through a stimulated emission device; Described power valve 13 inner segments have the hole 12 of dropping a bomb that can put into described steel ball 14; Two Fibre Optical Sensors of an optical fiber velometer 17 are installed in respectively on the entrance end inner wall tube of described power valve 13.The structure of gas compressing apparatus is: air pump 1 outlet connects the import of an one-level gas cylinder 3 through a supercharging air pump 2, the outlet of described one-level gas cylinder 3 connects the import of a secondary gas cylinder 6 through an one-level retaining valve 5, the outlet of described secondary gas cylinder 6 is through the import of three grades of gas cylinders 8 of a secondary retaining valve 7 connections, and the outlet of described three grades of gas cylinders 8 connects the import of described stimulated emission device; On described one-level gas cylinder 3, secondary gas cylinder 6 and three grades of gas cylinders 8 tensimeter 16 is housed respectively.The structure of stimulated emission device is: the import of a solenoid valve 9 connects the outlet of described gas compressing apparatus, and the outlet of described solenoid valve 9 connects the import of a convergent contour plenum chamber 11 through a connecting pipe 10, and the outlet of described plenum chamber 11 connects the import of described power valve 13.Power valve 13 is that a pressure switch is equipped with in the steel pipe inflow point of an effective length, and the diameter of the interior diameter of steel pipe and described steel ball 14 is complementary.Principle of work is as follows: open air pump 1, air is pumped in the snorkel 4, after supercharge pump 2 superchargings, gases at high pressure enter one-level gas cylinder 3, and one-level solenoid valve 5 and two-stage electromagnetic valve 7 opened simultaneously, make gases at high pressure be full of secondary gas cylinder 6 and three grades of gas cylinders 8, emitter just is in battery.During emission, open emission solenoid valve 9, gases at high pressure moments enters connecting pipe 10, be full of plenum chamber 11, when pressure surpassed the ratings of selected pressure switch, pressure switch was opened, the gases at high pressure momentary action is launched steel ball 14 in steel ball 14 along power valve 13.The endpiece of power valve 13 is installed an optical fiber velometer 17 measuring and calculating steel ball emission rates and real on the display screen of velometer.
The circuit system structure of present embodiment is seen shown in Figure 2.
Claims (4)
1. an air pressure type impact test instrument of safety mask comprises steel ball (14), power valve (13) and gas compressing apparatus, and its feature is being connected the import of described power valve (13) through a stimulated emission device with the outlet of described gas compressing apparatus; Described power valve (13) inner segment has the hole of dropping a bomb (12) that can put into described steel ball (14); Two Fibre Optical Sensors of an optical fiber velometer (17) are installed in respectively on the entrance end inner wall tube of described power valve (13).
2. safety eyewear air pressure according to claim 1 is impact test instrument, the structure that it is characterized in that described gas compressing apparatus is: an air pump (1) outlet connects the import of an one-level gas cylinder (3) through a supercharging air pump (2), the outlet of described one-level gas cylinder (3) connects the import of a secondary gas cylinder (6) through an one-level retaining valve (5), the outlet of described secondary gas cylinder (6) is through the import of a secondary retaining valve (7) one three grades gas cylinders of connection (8), and the outlet of described three grades of gas cylinders (8) connects the import of described stimulated emission device; On described one-level gas cylinder (3), secondary gas cylinder (6) and the three grades of gas cylinders (8) tensimeter (16) is housed respectively.
3. safety eyewear air pressure according to claim 1 and 2 is impact test instrument, the structure that it is characterized in that described stimulated emission device is: the import of a solenoid valve (9) connects the outlet of described gas compressing apparatus, and the outlet of described solenoid valve (9) connects the import of a convergent contour plenum chamber (11) through a connecting pipe (10), and the outlet of described plenum chamber (11) connects the import of described power valve (13).
4. air pressure type impact test instrument of safety mask according to claim 1 is characterized in that described power valve (13) is the steel pipe of an effective length, and a pressure switch is equipped with in inflow point, and the diameter of the interior diameter of steel pipe and described steel ball (14) is complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910196521A CN101672724A (en) | 2009-09-25 | 2009-09-25 | Air pressure type impact test instrument of safety mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910196521A CN101672724A (en) | 2009-09-25 | 2009-09-25 | Air pressure type impact test instrument of safety mask |
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| Publication Number | Publication Date |
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| CN101672724A true CN101672724A (en) | 2010-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910196521A Pending CN101672724A (en) | 2009-09-25 | 2009-09-25 | Air pressure type impact test instrument of safety mask |
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| CN (1) | CN101672724A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200485A (en) * | 2010-03-22 | 2011-09-28 | 深圳电子产品质量检测中心 | Hailstone testing machine for solar photovoltaic module |
| CN104776974A (en) * | 2015-04-07 | 2015-07-15 | 西南交通大学 | Non-contact pneumatic excitation device |
| US9958366B2 (en) | 2016-02-24 | 2018-05-01 | Ford Global Technologies, Llc | Stone impact simulator |
| CN110542650A (en) * | 2019-07-19 | 2019-12-06 | 华南理工大学 | multifunctional steel ball impact device for detecting impact resistance of vehicle body coating |
-
2009
- 2009-09-25 CN CN200910196521A patent/CN101672724A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200485A (en) * | 2010-03-22 | 2011-09-28 | 深圳电子产品质量检测中心 | Hailstone testing machine for solar photovoltaic module |
| CN104776974A (en) * | 2015-04-07 | 2015-07-15 | 西南交通大学 | Non-contact pneumatic excitation device |
| CN104776974B (en) * | 2015-04-07 | 2018-07-31 | 西南交通大学 | A kind of non-contact pneumatic exciting device |
| US9958366B2 (en) | 2016-02-24 | 2018-05-01 | Ford Global Technologies, Llc | Stone impact simulator |
| CN110542650A (en) * | 2019-07-19 | 2019-12-06 | 华南理工大学 | multifunctional steel ball impact device for detecting impact resistance of vehicle body coating |
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Open date: 20100317 |