CN106226021A - Gas burst pressure produces and loading experimental apparatus - Google Patents
Gas burst pressure produces and loading experimental apparatus Download PDFInfo
- Publication number
- CN106226021A CN106226021A CN201610753011.6A CN201610753011A CN106226021A CN 106226021 A CN106226021 A CN 106226021A CN 201610753011 A CN201610753011 A CN 201610753011A CN 106226021 A CN106226021 A CN 106226021A
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- Prior art keywords
- air chamber
- pressure
- blast air
- gas
- experimental apparatus
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
Abstract
The invention discloses a kind of gas burst pressure to produce and loading experimental apparatus, including igniter, blast air chamber, pressure test device, locking device, pressure vacuum gauge and N number of base, N >=2, N number of base is uniformly distributed and is fixed on bottom blast air chamber；Pressure test device is arranged on blast plenum roof, and igniter and locking device are separately positioned on the two ends of blast air chamber, and pressure vacuum gauge is arranged on the end face of blast air chamber.The present invention is for simulating the generation of restricted clearance internal gas blast pressure and the loading effect to building element thereof, it is possible to produced the gas explosion load of multi-form by regulation initial condition (kind of fuel gas and concentration).
Description
Technical field
The invention belongs to safety engineering test field, be specifically related to a kind of gas burst pressure and produce and loading experiment dress
Put.
Background technology
The blast of interior of building combustible gas mixture has become the multiple of current industrial production and domestic life field
One of accident, most with the generation of gas explosion form, building structure, indoor equipment, facility are caused serious destruction.Gas is quick-fried
The damage effect that fried accident produces is the most relevant with house interior gas explosion pressure and the effect to structure thereof, and room pressure is subject to
The factors impact such as release to gas type, concentration, shot room space geometry characteristic, shape, internal medium and indoor gas,
Compared with chemical explosion, nuclear explosion load, indoor gas detonation pressure has rise time length, peak value is many, pressure pattern is various
Etc. feature, the dynamic response characteristics of structure also will be affected.Structure under the conditions of carrying out the development of indoor gas detonation pressure and being somebody's turn to do
The research of damage effect, protection and Structural Damage Assessment to gas burst accident are significant, and indoor gas blast
Pressure generation and the assay device loading structure are then necessary research meanses.
The existing assay device that building structure is carried out explosively loading, main analog chemical explosion or nuclear explosive shock wave,
Such as atomic blast simulator, shock tube etc., this load form is the most distinguishing with indoor gas detonation pressure；And
Gas burst test in relevant restricted clearance, it is preferred that emphasis is the propagation of learning gas explosive flame speed, the development of pressure, space
Venting of dust explosion and gas concentration, the impact etc. of kind, mainly in the single shot rooms such as pipeline, spherical or Cylindrical Explosion Vessel or even
Carrying out in logical device, the building indoor gas explosive event that experiment condition is square with reality differs relatively big, and does not all consider building
Build the loading of component.
Summary of the invention
It is an object of the present invention to provide a kind of gas burst pressure to produce and loading experimental apparatus, be used for simulating in restricted clearance
The generation of portion's gas burst pressure and the loading effect to building element thereof.
The technical solution realizing the object of the invention is: a kind of gas burst pressure produces and loading experimental apparatus, its
It is characterised by: include igniter, explode air chamber, pressure test device, locking device, pressure vacuum gauge and N number of base, N >=
2, N number of base is uniformly distributed and is fixed on bottom blast air chamber；Pressure test device is arranged on blast plenum roof, igniter with
Locking device is separately positioned on the two ends of blast air chamber, and pressure vacuum gauge is arranged on the end face of blast air chamber.
The length of described blast air chamber is more than height, and two end faces of length direction, one end is provided with through hole, and the other end is for no reason
Lid, end-cover-free end is provided with stand under load component to be measured, and fuel gas is filled in the inner chamber of blast air chamber；Open on the sidewall of blast air chamber
Having an aspirating hole and several air inlets, aspirating hole is positioned at the center of described sidewall, and several air inlets are the most symmetrical
In the both sides of aspirating hole, air inlet is connected with gas cylinder by gas pipeline；Aspirating hole passes through gas pipeline and anti-explosion vacuum pump phase
Even；The end face of blast air chamber is linearly provided with a pressure vacuum gauge installing hole and several sensor mounting hole, vacuum pressure
Table is arranged in pressure vacuum gauge installing hole.
The center of circle of described aspirating hole and several air inlets is positioned at same straight line.
Described sidewall is not two end faces of end face, bottom surface and length direction.
Described blast air chamber is cuboid.
On above-mentioned explosive gas chamber outer wall after perforate build-up member, it is intended to filling with sealant and seals.
Described igniter includes ignition controller, ring flange and igniting resistance silk, ring flange and the end of blast air chamber
Through hole is connected, and igniting resistance silk one end is connected with ignition controller, and the other end stretches into the inner chamber of blast air chamber from ring flange center
In, ignition controller heats igniting resistance silk by electric current so that it is reaching firing temperature, ignite the fuel gas in inner chamber.
Described pressure test device includes data acquisition unit and several pressure transducers, and several pressure transducers are respectively
Being arranged in described sensor mounting hole, the pedestal of described pressure transducer is concordant with the inwall of blast air chamber, several pressure
Sensor is connected with data acquisition unit respectively, and data acquisition unit shows and records the change value of pressure collected.
Described locking device include press box and seal bed course, press box be arranged on blast air chamber uncovered end, press box side with
Blast air chamber is rotationally connected, and seals bed course and is arranged on the junction of stand under load component to be measured and blast air chamber, and press box pushes down to be measured being subject to
After carrying component, by bolt by tight to stand under load component to be measured and explosive gas chamber pressure, it is achieved the sealing of blast air chamber.
Compared with prior art, its remarkable advantage is the present invention:
(1) the gas explosion load of multi-form can be produced by regulation initial condition (kind of fuel gas and concentration).
(2) blast air chamber is cuboid, it is possible to the pressure simulating the internal gas explosion of square space more really is special
Levy.
(3) may be used for building element (i.e. stand under load component) is carried out explosively loading.
Accompanying drawing explanation
Fig. 1 is that gas burst pressure of the present invention produces and the overall structure schematic diagram of loading experimental apparatus.
Fig. 2 is that gas burst pressure of the present invention produces and the side view of loading experimental apparatus.
Fig. 3 is the embodiment of the present invention 1 pressure history figure when testing.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail.
In conjunction with Fig. 1 and Fig. 2, a kind of gas burst pressure produces and loading experimental apparatus, including igniter, blast air chamber
14, pressure test device, locking device, pressure vacuum gauge 7 and N number of base 6, N >=2, N number of base 6 be uniformly distributed be fixed on quick-fried
Bottom fried air chamber 14, blast air chamber 14 is played a supportive role.Pressure test device is arranged on blast air chamber 14 top, igniter
With the two ends that locking device is separately positioned on blast air chamber 14, pressure vacuum gauge 7 is arranged on the end face of blast air chamber 14.
Described blast air chamber 14 is made up of high strength steel, and its length is more than height, and two end faces of length direction, one end sets
Having through hole, other end end-cover-free, end-cover-free end is provided with stand under load component 11 to be measured, and fuel gas is filled with the inner chamber of blast air chamber 14
In, mix with air.Having an aspirating hole 5 and several air inlets 4 on the sidewall of blast air chamber 14, aspirating hole 5 is positioned at institute
Stating the center of sidewall, several air inlets 4 are symmetrically distributed in the both sides of aspirating hole 5, described aspirating hole 5 and several air inlets successively
The center of circle in hole 4 is positioned at same straight line, and to ensure fuel gas mix homogeneously, air inlet 4 is connected with gas cylinder by gas pipeline；
Aspirating hole 5 is connected with anti-explosion vacuum pump by gas pipeline.Described sidewall is not two ends of end face, bottom surface and length direction
Face.The end face of blast air chamber 14 is linearly provided with one, pressure vacuum gauge installing hole and several sensor mounting hole, Vacuum Pressure
Power table 7 is arranged in pressure vacuum gauge installing hole, uses fluid sealant to close to ensure the seal of blast air chamber 14, shows in real time
Inside cavity pressure condition.
Described blast air chamber 14 is cuboid.
Described igniter includes ignition controller 1, ring flange 2 and igniting resistance silk 3, ring flange 2 and blast air chamber 14
End through hole by flange be connected, igniting resistance silk 3 one end is connected with ignition controller 1, and the other end is stretched from ring flange 2 center
Enter to explode air chamber 14 inner chamber in, ignition controller 1 heats igniting resistance silk 3 by electric current so that it is reaches firing temperature, ignites
Fuel gas in inner chamber.
Described pressure test device includes data acquisition unit 15 and several pressure transducers 8, several pressure transducers 8
It is separately positioned in described sensor mounting hole, for gathering the change value of pressure of blast air chamber 14 inner chamber, described pressure sensing
The pedestal of device 8 is concordant with the inwall of blast air chamber 14, and with sealant sealing to ensure seal.Several pressure transducers 8
Being connected with data acquisition unit 15 respectively, data acquisition unit 15 shows and records the change value of pressure collected.
In conjunction with Fig. 2, described locking device includes press box 12 and seals bed course, and press box 12 is arranged on the uncovered of blast air chamber 14
End, press box 12 side is rotationally connected by hinge with blast air chamber 14, seals bed course and is arranged on stand under load component 11 to be measured and blast
The junction of air chamber 14, after press box 12 pushes down stand under load component 11 to be measured, by bolt by stand under load component 11 to be measured and blast air chamber
14 compress, it is achieved the sealing of blast air chamber 14.
Embodiment 1
In conjunction with Fig. 1, a kind of gas burst pressure produces and loading experimental apparatus, surveys including igniter, blast air chamber 14, pressure
Electricity testing device, locking device, pressure vacuum gauge 7 and 6,3 bases 6 of 3 bases are uniformly distributed and are welded on bottom blast air chamber 14, right
Blast air chamber 14 plays supporting & stablizing effect.Pressure test device is arranged on blast air chamber 14 top, igniter and locking device
Being separately positioned on the two ends of blast air chamber 14, pressure vacuum gauge 7 is arranged on the end face of blast air chamber 14.
Described blast air chamber 14 is made up of high strength steel, and for cuboid, two end faces of length direction, one end is provided with logical
Hole, other end end-cover-free, end-cover-free end is provided with stand under load component 11 to be measured, and fuel gas (ethylene, concentration 8%) is filled in explosive gas
In the inner chamber of room 14.Having an aspirating hole 5 and 6 air inlets 4 on the sidewall of blast air chamber 14, aspirating hole 5 is positioned at described side
The center of wall, 6 air inlets 4 are symmetrically distributed in the both sides of aspirating hole 5, described aspirating hole 5 and the center of circle of 6 air inlets 4 successively
Being positioned at same straight line, to ensure fuel gas mix homogeneously, air inlet 4 is connected with gas cylinder by gas pipeline, and combustion gas is from defeated
Feed channel enters blast air chamber 14, mixes with air therein；Aspirating hole 5 is connected with anti-explosion vacuum pump by gas pipeline.Institute
State sidewall not for end face, bottom surface and two end faces of length direction.The end face of blast air chamber 14 is linearly provided with one, Vacuum Pressure
Power table installing hole and 4 sensor mounting hole, pressure vacuum gauge 7 is arranged in pressure vacuum gauge installing hole, uses sealant sealing
Close to ensure the seal of blast air chamber 14, in real time display inside cavity pressure condition.
Described igniter includes ignition controller 1, ring flange 2 and igniting resistance silk 3, ring flange 2 and blast air chamber 14
End through hole by flange be connected, igniting resistance silk 3 one end is connected with ignition controller 1, and the other end is stretched from ring flange 2 center
Enter to explode air chamber 14 inner chamber in, ignition controller 1 heats igniting resistance silk 3 by electric current so that it is reaches firing temperature, ignites
Fuel gas in inner chamber.
Described pressure test device includes that data acquisition unit 15 and 8,4 pressure transducers 8 of 4 pressure transducers set respectively
Put in described sensor mounting hole, for gathering the change value of pressure of blast air chamber 14 inner chamber, the base of described pressure transducer 8
Seat is concordant with the inwall of blast air chamber 14, and with sealant sealing to ensure seal.Several pressure transducers 8 respectively with number
Connecting according to harvester 15, data acquisition unit 15 shows and records the change value of pressure collected.
In conjunction with Fig. 2, described locking device includes press box 12 and seals bed course, and press box 12 is rectangle, is arranged on explosive gas
The uncovered end of room 14, press box 12 side is rotationally connected by hinge with blast air chamber 14, seals bed course and is arranged on stand under load structure to be measured
Part 11 and the junction of blast air chamber 14, after press box 12 pushes down stand under load component 11 to be measured, by bolt by stand under load component 11 to be measured
Compress with blast air chamber 14, it is achieved the sealing of blast air chamber 14.
Pressure produces and loading experiment step:
Step 1, pressure transducer 8 and pressure vacuum gauge 7 are arranged on blast air chamber 14 end face, and check its air-tightness.
Step 2, by sealing bed course 13, stand under load component 11 to be measured, press box 12 be sequentially placed into the uncovered end of blast air chamber 14, and
Blind bolt is tightened, and checks air-tightness.
Step 3, unlatching anti-explosion vacuum pump are bled, and control internal negative pressure numerical value by pressure vacuum gauge 7, reach target
Pressure stops bleeding, and opens intake valve and passes through the uniform air inlet of air inlet 4, reaches aimed concn and stops air inlet.
Step 4, closedown pressure vacuum gauge 7 valve, disconnect intake interface, connect igniter, and personnel withdraw.
Step 5, igniting, ignition controller 1 heats igniting resistance silk 3 by electric current so that it is reach firing temperature, in igniting
Fuel gas in chamber, carries out explosively loading to stand under load component 11 to be measured.
Step 6, pressure transducer 8 gather the change value of pressure of blast air chamber 14 inner chamber, and data acquisition unit 15 shows and remembers
The change value of pressure that record collects, as shown in Figure 3.The destruction situation of Real Time Observation stand under load to be measured component 11 simultaneously.
In sum, the present invention can produce multi-form by regulation initial condition (kind of fuel gas and concentration)
Gas explosion load, blast air chamber is cuboid, it is possible to simulate the pressure of the internal gas explosion of square space more really
Power feature, it is possible to for building element (i.e. stand under load component) is carried out explosively loading.
Claims (9)
1. a gas burst pressure produces and loading experimental apparatus, it is characterised in that: include igniter, blast air chamber
(14), pressure test device, locking device, pressure vacuum gauge (7) and N number of base (6), N >=2, N number of base (6) is uniformly distributed
It is fixed on blast air chamber (14) bottom；Pressure test device is arranged on blast air chamber (14) top, igniter and locking device
Being separately positioned on the two ends of blast air chamber (14), pressure vacuum gauge (7) is arranged on the end face of blast air chamber (14).
Gas burst pressure the most according to claim 1 produces and loading experimental apparatus, it is characterised in that: described explosive gas
The length of room (14) is more than height, and two end faces of length direction, one end is provided with through hole, other end end-cover-free, and end-cover-free end sets
Having stand under load component (11) to be measured, fuel gas is filled in the inner chamber of blast air chamber (14)；Open on the sidewall of blast air chamber (14)
Having an aspirating hole (5) and several air inlets (4), aspirating hole (5) is positioned at the center of described sidewall, several air inlets (4)
Being symmetrically distributed in the both sides of aspirating hole (5) successively, air inlet (4) is connected with gas cylinder by gas pipeline；Aspirating hole (5) is by defeated
Feed channel is connected with anti-explosion vacuum pump；The end face of blast air chamber (14) is linearly provided with a pressure vacuum gauge installing hole and some
Individual sensor mounting hole, pressure vacuum gauge (7) is arranged in pressure vacuum gauge installing hole.
Gas burst pressure the most according to claim 2 produces and loading experimental apparatus, it is characterised in that: described aspirating hole
And the center of circle of several air inlets (4) is positioned at same straight line (5).
Gas burst pressure the most according to claim 2 produces and loading experimental apparatus, it is characterised in that: described sidewall is not
Two end faces for end face, bottom surface and length direction.
Gas burst pressure the most according to claim 2 produces and loading experimental apparatus, it is characterised in that: described explosive gas
Room (14) is cuboid.
Gas burst pressure the most according to claim 2 produces and loading experimental apparatus, it is characterised in that: above-mentioned explosive gas
On room (14) outer wall after perforate build-up member, it is intended to filling with sealant and seals.
Gas burst pressure the most according to claim 1 produces and loading experimental apparatus, it is characterised in that: described igniting dress
Putting and include ignition controller (1), ring flange (2) and igniting resistance silk (3), ring flange (2) leads to the end of blast air chamber (14)
Hole is connected, and igniting resistance silk (3) one end is connected with ignition controller (1), and the other end stretches into blast air chamber from ring flange (2) center
(14), in inner chamber, ignition controller (1) is by electric current heating igniting resistance silk (3) so that it is reaching firing temperature, ignite inner chamber
In fuel gas.
Gas burst pressure the most according to claim 1 produces and loading experimental apparatus, it is characterised in that: described pressure is surveyed
Electricity testing device includes data acquisition unit (15) and several pressure transducers (8), and several pressure transducers (8) are separately positioned on institute
Stating in sensor mounting hole, the pedestal of described pressure transducer (8) is concordant with the inwall of blast air chamber (14), and several pressure passes
Sensor (8) is connected with data acquisition unit (15) respectively, and data acquisition unit (15) shows and records the change value of pressure collected.
Gas burst pressure the most according to claim 1 produces and loading experimental apparatus, it is characterised in that: described closing fills
Putting and include press box (12) and seal bed course, press box (12) is arranged on the uncovered end of blast air chamber (14), and press box (12) side is with quick-fried
Fried air chamber (14) is rotationally connected, and seals bed course and is arranged on the junction of stand under load component (11) to be measured and blast air chamber (14), press box
(12), after pushing down stand under load component (11) to be measured, by bolt, stand under load component (11) to be measured and blast air chamber (14) are compressed, it is achieved
The sealing of blast air chamber (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610753011.6A CN106226021A (en) | 2016-08-29 | 2016-08-29 | Gas burst pressure produces and loading experimental apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610753011.6A CN106226021A (en) | 2016-08-29 | 2016-08-29 | Gas burst pressure produces and loading experimental apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN106226021A true CN106226021A (en) | 2016-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610753011.6A Pending CN106226021A (en) | 2016-08-29 | 2016-08-29 | Gas burst pressure produces and loading experimental apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212154A (en) * | 2018-07-03 | 2019-01-15 | 中国人民解放军陆军工程大学 | Gas burst Thermal-mechanical Coupling damage effect experimental provision |
| CN112201108A (en) * | 2020-10-26 | 2021-01-08 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Experimental section structure for multifunctional medium-high pressure explosive load generator |
| CN113959620A (en) * | 2021-10-20 | 2022-01-21 | 南京君缘科爆工程技术有限公司 | Method for evaluating explosion power of indoor natural gas based on explosion velocity |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212154A (en) * | 2018-07-03 | 2019-01-15 | 中国人民解放军陆军工程大学 | Gas burst Thermal-mechanical Coupling damage effect experimental provision |
| CN109212154B (en) * | 2018-07-03 | 2023-11-10 | 中国人民解放军陆军工程大学 | Gas explosion thermodynamic coupling destructive effect experimental device |
| CN112201108A (en) * | 2020-10-26 | 2021-01-08 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Experimental section structure for multifunctional medium-high pressure explosive load generator |
| CN113959620A (en) * | 2021-10-20 | 2022-01-21 | 南京君缘科爆工程技术有限公司 | Method for evaluating explosion power of indoor natural gas based on explosion velocity |
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