CN208000202U - A kind of more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust - Google Patents
A kind of more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust Download PDFInfo
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- CN208000202U CN208000202U CN201721681270.9U CN201721681270U CN208000202U CN 208000202 U CN208000202 U CN 208000202U CN 201721681270 U CN201721681270 U CN 201721681270U CN 208000202 U CN208000202 U CN 208000202U
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Abstract
The utility model discloses a kind of more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust, and the test device includes explosion cavity, venting of dust explosion piece fixed plate and dust cabin, and there are three venting of dust explosion mouths for setting in the explosion chamber body;Setting is fluted at the explosion cavity open edge, by the venting of dust explosion piece of the embedded varying strength in the groove, to realize different pressure release intensity;The venting of dust explosion piece fixed plate is fixed on by bolt seal on the explosion cavity, and the venting of dust explosion piece of varying strength is sealingly clamped in the groove;Gas handling system, two pressure sensors, a dust recycling device and two igniters are additionally provided on the explosion cavity.Above-mentioned apparatus can effectively provide constraint venting of dust explosion structure, and can change the key parameter of constraint venting of dust explosion structure, be applied in the experiment of combustible dust explosion disaster, can truly reflect explosion disaster feature.
Description
Technical field
The utility model is related to more mouthfuls of couplings of combustible dust explosion test equipment technical field more particularly to a kind of combustible dust
Close venting of dust explosion measure of merit device.
Background technology
In recent years, China's combustible dust accident occurrence frequency is constantly soaring, cause serious casualties, property loss and
Severe society's negative effect, Fauna of Kunshan, Jiangsu " 82 " aluminium powder explosion accident in 2014 have fully demonstrated the serious of dust explosion
Harmfulness and its explosion mechanism, the urgency and necessity that prevent theoretical research.
Dust explosion originate from more it is various relate to the ancillary equipments such as powder production containers and deduster, it is related according to country, industry
The requirement of technical standard, these installations and facilities should all install necessary explosion venting device.The equipment of they and upstream or downstream simultaneously
It is realized and is connected by structures such as pipelines, also include necessary in this way, both having included special venting of dust explosion structure in installations and facilities main body
Interface channel.Dust explosion moment occurs inside it, more mouthfuls of ventings of dust explosion necessarily occur around the equipment, i.e. explosion disaster is not only right
Venting of dust explosion structure forms impact, also inevitable to be propagated outward along pipeline unicom oral area, and then constitutes more mouthfuls of ventings of dust explosion.Multiple venting of dust explosion mouths exist
It is likely to interact during venting of dust explosion, and then the overall venting of dust explosion effect of the equipment is made a significant impact, simultaneously because explosion
There are directive property, the different directions of multiple venting of dust explosion mouths are likely to the complexity and uncertainty of aggravation venting of dust explosion for the propagation of shock wave.
Therefore, the evaluating apparatus and method for establishing more mouthfuls of coupling venting of dust explosion effects, for more mouthfuls of couplings of effective evaluation actual production installations and facilities
Venting of dust explosion safe effect is closed to be of great significance.
Invention content
The purpose of this utility model is to provide a kind of more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust, which can be with
Constraint venting of dust explosion structure is effectively provided, and the key parameter of constraint venting of dust explosion structure can be changed, is applied to combustible dust explosion
In disaster experiment, it can truly reflect explosion disaster feature.
The purpose of this utility model is achieved through the following technical solutions:
A kind of more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust, the test device includes explosion cavity, venting of dust explosion piece
Fixed plate and dust cabin, wherein:
The venting of dust explosion mouth there are three settings in the explosion chamber body, the first venting of dust explosion mouth and the second venting of dust explosion mouth are symmetrically disposed on described
The two sides of explosion cavity, third venting of dust explosion mouth are set to the front of the explosion cavity and perpendicular to ground;
Setting is fluted at the explosion cavity open edge, and the venting of dust explosion piece fixed plate is fixed on institute by bolt seal
It states on explosion cavity, the venting of dust explosion piece of varying strength is sealingly clamped in the groove;
The dust cabin is connected with the explosion cavity, and there are one dust cabin pressure sensors for setting;
Be additionally provided on the explosion cavity gas handling system, two pressure sensors, a dust recycling device and
Two igniters.
The test device further includes control system, dust cabin pressure sensor and another two pressure sensor and two
Igniter is connected with control system.
The control system uses high-performance one chip microcomputer for core.
The explosion cavity is column structure, and the opening of the explosion cavity, three venting of dust explosion mouths and groove are spherical shape.
The explosion cavity and the material of venting of dust explosion piece fixed plate are steel.
Above-mentioned apparatus can effectively provide constraint venting of dust explosion knot it can be seen from above-mentioned technical solution provided by the utility model
Structure, and the key parameter of constraint venting of dust explosion structure can be changed, it is applied in the experiment of combustible dust explosion disaster, it can be true
Ground reflects explosion disaster feature.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art for, without creative efforts, can also be according to these attached drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation for the more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust that the utility model embodiment provides
Figure;
Fig. 2 is provided the close-up schematic view of test device by the utility model embodiment;
Fig. 3 is provided the enlarged diagram of venting of dust explosion mouth by the utility model embodiment.
Specific implementation mode
With reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, belongs to the scope of protection of the utility model.
The utility model embodiment is described in further detail below in conjunction with attached drawing, is as shown in Figure 1 this practicality
The structural schematic diagram for the more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust that new embodiment provides, is illustrated in figure 2 this reality
With the close-up schematic view of the provided test device of new embodiment, include in figure:Explosion cavity 1, tank of compressed air
2, manual relief valve 3, dust recycling device 4, dust cabin 5, dust cabin pressure sensor 6, terminal 7, control system 8,
Pressure sensor 9, manual vacuum pump valve 10, igniter 11, pressure sensor 12, igniter 13, the first venting of dust explosion mouth 14,
Three venting of dust explosion mouths 15, groove 16, venting of dust explosion piece fixed plate 17, pneumatic valve group 18, the second venting of dust explosion mouth 19 and bolt 20.
In conjunction with Fig. 1 and 2, the main body of the test device includes mainly explosion cavity 1, venting of dust explosion piece fixed plate 17 and dust cabin 5,
Wherein:
There are three venting of dust explosion mouth, the first venting of dust explosion mouth 14 and the second venting of dust explosion mouths 19 to be symmetrical arranged for setting in the explosion cavity 1
In the two sides of the explosion cavity 1, third venting of dust explosion mouth 15 is set to the front of the explosion cavity 1 and perpendicular to ground;
Fluted 16 are arranged at 1 open edge of explosion cavity, passes through the embedded varying strength in the groove 16
Venting of dust explosion piece, to realize different pressure release intensity;
The venting of dust explosion piece fixed plate 17 is fixed on by the sealing of bolt 20 on the explosion cavity 1, by letting out for varying strength
Quick-fried is sealingly clamped in the groove 16, is illustrated in figure 3 the amplification signal of the provided venting of dust explosion mouth of the utility model embodiment
Figure;
The dust cabin 5 is connected with the explosion cavity 1, and there are one dust cabin pressure sensors 6 for setting;
Gas handling system, two pressure sensors 9 and 12, dust recycling dresses are additionally provided on the explosion cavity 1
4 and two igniters 11 and 13 are set, wherein:
The gas handling system includes pneumatic valve group 18, for being provided to the inside of the explosion cavity 1 for generating explosion
Combustible dust and air mixed phase;
The dust recycling device 4 is for making the mixed phase spread;
Described two igniters 11 and 13 are used to make the mixed phase after diffusion to generate explosion, three pressure sensors 6,9
With 12 for the pressure parameter in fixation measuring blast process.
In addition, as shown in Figure 1, the test device further includes having control system 8, wherein:
Three pressure sensors 6,9 and 12 and two igniters 11 and 13 are connected with control system 8, by the control
System 8 comes control point and fights to be wirelessly transferred test parameters.
The control system 8 uses high-performance one chip microcomputer for core, can realize test firing and data acquisition certainly
Dynamicization ensures that system has higher stability and anti-interference in the specific implementation, SMD surface encapsulation elements can be selected.
The control system 8 further can carry out wireless monitor by terminal 7, and carry out data wireless transmission, automatically
M- pressue-graph when drafting.
In addition, above-mentioned explosion cavity 1 can be designed as column structure, and the opening of the explosion cavity 1, three venting of dust explosion mouths with
And groove 16 is spherical designs.
And above-mentioned explosion cavity 1 and the material of venting of dust explosion piece fixed plate 17 can be steel.
Based on above-mentioned test device, present invention also provides a kind of more mouthfuls of coupling venting of dust explosion measure of merit sides of combustible dust
Method, the method includes:
Step 1 according to test request determines that critical technical parameter, the critical technical parameter include venting of dust explosion mouth number first
Amount, embedded venting of dust explosion piece intensity and venting of dust explosion direction;
The venting of dust explosion piece for setting intensity is fixed at the venting of dust explosion mouth of explosion cavity by step 2 using venting of dust explosion piece fixed plate, is opened
The main power source of experimental rig;
In the step, tank of compressed air can be prepared in advance before the test, and in the tank of compressed air at least filled with
Compressed air more than 2MPa;
The leakproofness for further checking explosion cavity covers the upper cover of explosion cavity and fastens in place, uses manual pressure release
Valve makes explosion cavity internal pressure be balanced with extraneous.
In the specific implementation, as used electrode ignition mode, then electrode needle is passed through into the igniter in explosion chamber body and consolidated
Fixed, it is 5mm to make the spacing of two electrode needles, turns off the explosion cavity;
Chemic ignition mode is such as used, then chemic ignition fuse is mounted in the igniter.
Step 3 weighs sample to be tested and by it down to the bottom of dust cabin, then so that the dust cabin is filled by control system
Pressure;
In this step, dust cabin pressurising 1MPa, which is discharged into explosion chamber body, about generates 50kPa pressure;
Step 4, the manual relief valve for closing explosion cavity open manual vacuum pump valve, are taken out by control system control true
Sky makes to reach setting value with atmospheric pressure in the explosion chamber body;
In the specific implementation, when showing about 0.220kPa with atmospheric pressure, manual vacuum pump valve is closed, and stop vacuum pumping
Vacuum makes to show about 0.250kPa with atmospheric pressure, turns off manual relief valve by opening manual relief valve.
Step 5 enters data acquisition setting interface using terminal remote operation, after required parameter is tested in setting,
It lights a fire to the igniter in the explosion chamber body, starts test process;
Step 6, during the test tests the pressure data of the explosion cavity by pressure sensor, according to test
The data obtained obtains the distribution map of explosion overpressure at any time, and obtains peak overpressure, obtains maximum venting pressure, completes venting of dust explosion effect
Fruit is tested.
It is worth noting that, the content not being described in detail in the utility model embodiment belongs to this field professional technique people
The prior art well known to member.
In conclusion the utility model embodiment is embedded in venting of dust explosion piece by the venting of dust explosion mouth in different location, one can be formed
The labyrinths such as venting of dust explosion mouth, symmetrical venting of dust explosion mouth and asymmetric venting of dust explosion mouth can realize more mouthfuls of combustible dust using this structure and method
The test of venting of dust explosion effect is coupled, instantaneous more structure Couplings is understood and releases to whole safe actual influence of releasing, to modern chemical industry
Fining, the personalized secure design of industry production equipment provide foundation.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
It is confined to this, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should
Subject to the scope of protection of the claims.
Claims (5)
1. a kind of more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust, which is characterized in that the test device includes explosion chamber
Body, venting of dust explosion piece fixed plate and dust cabin, wherein:
There are three venting of dust explosion mouths for setting in the explosion chamber body, and the first venting of dust explosion mouth and the second venting of dust explosion mouth are symmetrically disposed on the explosion
The two sides of cavity, third venting of dust explosion mouth are set to the front of the explosion cavity and perpendicular to ground;
Setting is fluted at the explosion cavity open edge, and the venting of dust explosion piece fixed plate is fixed on described quick-fried by bolt seal
On fried cavity, the venting of dust explosion piece of varying strength is sealingly clamped in the groove;
The dust cabin is connected with the explosion cavity, and there are one dust cabin pressure sensors for setting;
Gas handling system, two pressure sensors, a dust recycling device and two are additionally provided on the explosion cavity
Igniter.
2. more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust according to claim 1, which is characterized in that the test dress
It further includes control system to set, dust cabin pressure sensor and another two pressure sensor and two igniters and control system
It is connected.
3. more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust according to claim 2, which is characterized in that
The control system uses high-performance one chip microcomputer for core.
4. more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust according to claim 1, which is characterized in that
The explosion cavity is column structure, and the opening of the explosion cavity, three venting of dust explosion mouths and groove are spherical shape.
5. more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust according to claim 1, which is characterized in that
The explosion cavity and the material of venting of dust explosion piece fixed plate are steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721681270.9U CN208000202U (en) | 2017-12-06 | 2017-12-06 | A kind of more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721681270.9U CN208000202U (en) | 2017-12-06 | 2017-12-06 | A kind of more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust |
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| CN208000202U true CN208000202U (en) | 2018-10-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831028A (en) * | 2017-12-06 | 2018-03-23 | 北京石油化工学院 | A kind of more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust and method of testing |
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2017
- 2017-12-06 CN CN201721681270.9U patent/CN208000202U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831028A (en) * | 2017-12-06 | 2018-03-23 | 北京石油化工学院 | A kind of more mouthfuls of coupling venting of dust explosion measure of merit devices of combustible dust and method of testing |
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