CN205958501U - Measurement device for explosive temperature subtracts majestic degree - Google Patents
Measurement device for explosive temperature subtracts majestic degree Download PDFInfo
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- CN205958501U CN205958501U CN201620769725.1U CN201620769725U CN205958501U CN 205958501 U CN205958501 U CN 205958501U CN 201620769725 U CN201620769725 U CN 201620769725U CN 205958501 U CN205958501 U CN 205958501U
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Abstract
The utility model discloses a measurement device for explosive temperature subtracts majestic degree, the device includes explosive, underwater explosion jar, pressure sensor and oscilloscope, and the explosive is through placing behind the water -bath heating in the underwater explosion jar, and pressure sensor places in the underwater explosion jar to be connected with oscilloscope, the water bath is the water bath in the constant temperature water box, the adjustable bath temperature of constant temperature water box, during the measurement, ignite the explosive behind the water -bath heating, record the pressure history curve through pressure sensor and oscilloscope, change the explosive quality of not carrying out water -bath heating, obtain the corresponding gas bubble pulsation cycle first time, it subtracts majestic degree formula to derive the temperature according to the gas bubble pulsation cycle first time to the temperature that calculates behind the explosive water -bath heating subtracts majestic degree. The utility model discloses the influence degree that can attenuate to explosive power the ration sign water -bath heating time in practical application to guide the blasting scheme design in the high temperature fire district.
Description
Technical field
The utility model is related to a kind of measurement apparatus, and especially a kind of explosive temperature subtracts the measurement apparatus of prestige degree, belongs to high
Warm blasting engineering technical field.
Background technology
High temperature flame range is easily caused during outdoor perforated blasting and causes accidental explosion or early quick-fried accident, and serious restriction is peeled off and produced
Completing of task, therefore in order to ensure blasting excavation safety, needs to be protected explosive, wherein has a kind of safeguard procedures
It is that explosive is in water environment, this safeguard procedures proposition time is later, the decay after heating water bath to explosive energy at present
Situation there is no suitable measurement apparatus and characterizing method.Some scholars are traditionally had to adopt shock wave peak computational pressure desensitization degree
In order to characterize the impact that pressure is decayed to explosive charge power, but the shock wave pressure peak atenuation situation of explosive can not be from essence
Upper reflection explosive strength attenuation, even if lead to identical explosive in the impact crest value of same position additionally, due to experimental error
Also it is not quite similar, that is, the repeatability of measuring shock waves peak value is undesirable, if therefore adopting shock wave pressure peak computational temperature
Subtract prestige degree and have that accuracy is not high, it can not reflect the impact that the heating water bath time decays to explosive charge power completely.Separately
Outward, explosive gross energy is calculated using Underwater Explosion Method and can reflect the impact that temperature decays to explosive charge power, but need
It is additionally carried out corresponding explosion velocity measurement and calculate relatively cumbersome.
Utility model content
The purpose of this utility model is can not be from essence for above-mentioned existing Explosive Shock Wave pressure peak attenuation
Upper reflection explosive strength attenuation and gross energy calculate and need to be additionally carried out explosion velocity measurement and calculate relatively cumbersome etc. not enough,
Provide the measurement apparatus that a kind of explosive temperature subtracts prestige degree, this device in actual applications can the quantitatively characterizing heating water bath time pair
The influence degree of explosive strength decay, thus instruct the blasting scheme in high temperature flame range to design.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of explosive temperature subtracts the measurement apparatus of prestige degree, including explosive, underwater explosion tank, pressure sensor and oscillography
Device, described explosive is placed in underwater explosion tank after heating water bath, and described pressure sensor is placed in underwater explosion tank, and
It is connected with oscillograph.
Preferably, described water-bath refers to the water-bath in constant temperature water box, described constant temperature water box adjustable water bath temperature, uses
In simulation water bath in high temperature blasthole for the powder stick.
Preferably, the temperature regulating range of described constant temperature water box is between room temperature and 100 DEG C.
Preferably, described explosive and pressure sensor are in the same depth in underwater explosion tank.
Preferably, described explosive is emulsion.
Preferably, described emulsion passes through physical sensitization agent or chemical sensitizer sensitization.
Preferably, described underwater explosion tank is the blasting pot with some strength.
Preferably, described underwater explosion tank is steel cylinder tank.
The utility model compared with prior art, has the advantage that and beneficial effect：
1st, the utility model the explosive after heating water bath is placed in underwater explosion tank and is ignited, and is passed by pressure
Sensor can capture pressure time-process curve after water shooting for the explosive, and is adopted pressure time-process curve data by oscillograph
Collection, measures temperature and subtracts prestige degree, such that it is able to judge power attenuation degree after explosive heating water bath.
2nd, the utility model can utilize water bath in high temperature blasthole for the constant temperature water box Dynamite, thus for surveying
Water-bath protection lower explosive property change offer condition in amount high temperature blasthole.
3rd, the temperature that the utility model provides subtracts prestige degree computing formula is that reflection explosive energy increases with the heat time and declines
Subtract situation, its influence degree that can the quantitatively characterizing heating water bath time explosive strength be decayed in actual applications, thus instruct
Blasting scheme design in high temperature flame range.
4th, the utility model provide temperature subtract prestige degree computing formula be also applied for characterize explosive because be under pressure impact and
There is the degree of power decay, thus providing reference for delay blasting conceptual design.
Brief description
Fig. 1 be the utility model embodiment 1 explosive temperature subtract prestige degree measurement apparatus structural representation.
Fig. 2 is that explosive is placed on the schematic diagram of constant temperature water box heating by the utility model embodiment 1.
Fig. 3 is the explosive fluctuation pressure timeamplitude map after the heating different time of the utility model embodiment 1.
Fig. 4 is the correction coefficient C the Fitting Calculation figure of the boundary effect of the utility model embodiment 2.
Fig. 5 is that the temperature of the utility model embodiment 2 and 3 subtracts prestige degree dtWith heating water bath time chart.
Wherein, 1- explosive, 2- underwater explosion tank, 3- pressure sensor, 4- oscillograph, 5- constant temperature water box.
Specific embodiment
With reference to embodiment and accompanying drawing, the utility model is described in further detail, but enforcement of the present utility model
Mode not limited to this.
Embodiment 1：
As shown in figure 1, present embodiments providing the measurement apparatus that a kind of explosive temperature subtracts prestige degree, this device includes explosive
1st, underwater explosion tank 2, pressure sensor 3 and oscillograph 4.
Described explosive 1 is emulsion, its can by physical sensitization agent or chemical sensitizer sensitization, such as glass microsphere,
Perlite, NaNO2Deng, its packaging after can carry out heating water bath, as shown in Fig. 2 explosive 1 is first placed in constant temperature water box 5
Water-bath in heat, heating certain time after be placed in underwater explosion tank 2；Wherein, constant temperature water box 5 adjustable water bath temperature
Degree, between room temperature and 100 DEG C, temperature control precision is 0.5 DEG C to its temperature regulating range, for simulating powder stick in high temperature blasthole
In water bath.
Described underwater explosion tank 2 is the blasting pot with some strength, such as steel cylinder tank, and its steel plate thickness is 3cm, directly
Footpath is 5m, and depth is 5m, can bear the impact after certain mass explosive charge.
Described pressure sensor 3 is placed in underwater explosion tank 2, and it has quick response feature, can capture explosive 1 in water
Shock wave pressure time-history curves after middle blast and gas bubble pulsation time-history curves, such as PCB sensor (ICP W138A25).
Described oscillograph 4 is connected with pressure sensor 3, can be by shock wave pressure time-history curves and gas bubble pulsation time-histories
Curve data is acquired and stores, such as Tyke oscillograph.
The measurement apparatus operation principle that the explosive temperature of the present embodiment subtracts prestige degree is as follows：
During measurement, the explosive 1 of certain mass is placed on to be heated to after the scheduled time in the water-bath in constant temperature water box 5 takes
Go out, the explosive 1 after heating water bath is placed in underwater explosion tank 2 and is ignited, surveyed by pressure sensor 3 and oscillograph 4
Shock wave pressure time-history curves after explosive charge and fluctuation pressure time-history curves, by the in fluctuation pressure time-history curves
Time corresponding to one minor peaks obtains gas bubble pulsation cycle first time, as shown in Figure 3；Change the explosive not carrying out heating water bath
1 mass, obtains corresponding gas bubble pulsation cycle first time, and the Fitting Calculation goes out the correction coefficient of boundary effect, according to for the first time
The gas bubble pulsation cycle derives that temperature subtracts prestige degree computing formula, subtracts calculating explosive 1 water-bath of prestige degree computing formula using this temperature and adds
Temperature after heat subtracts prestige degree.
Above-mentioned explosive 1 and pressure sensor 3 are in the same depth in underwater explosion tank 2, and same contrast experiment must not
Arbitrarily change depth；Need during the correction coefficient calculating boundary effect to eliminate the impact of detonating capsule, the ratio that explosive 1 energy is constituted
Only there are minor variations with heating water bath in example.
Embodiment 2：
Present embodiments provide the characterizing method that a kind of explosive temperature subtracts prestige degree, the method comprises the following steps：
Step one, the explosive of certain mass is placed in the water-bath in constant temperature water box heating certain time；
Step 2, pressure sensor is placed in underwater explosion tank, and connects oscillograph；
Step 3, the explosive after heating water bath is placed in underwater explosion tank and is ignited；
Step 4, pressure time-process curve is recorded by pressure sensor and oscillograph；
Step 5, change do not carry out the quality of explosive of heating water bath, obtain corresponding gas bubble pulsation cycle first time；
Step 6, derive that temperature subtracts prestige degree computing formula according to gas bubble pulsation cycle first time, and prestige is subtracted by temperature
Temperature after degree computing formula calculates explosive heating water bath subtracts prestige degree；
In this step, the Fitting Calculation goes out the correction coefficient of boundary effect first, and the correction coefficient of described boundary effect adopts
Following formula calculates：
Wherein, C is the correction coefficient of boundary effect, and a, b are the intrinsic constant under certain experiment condition, according to first time gas
Bubble pulsation period and quality of explosive carry out least square fitting calculating, such as following formula：
Wherein, TbFor gas bubble pulsation cycle first time, W is quality of explosive；
In order to determine correction coefficient C, the explosive (15g～50g) of different quality is taken under equal conditions to measure, and will
Measurement data is fitted according to above-mentioned computing formula, and fitting effect is as shown in Figure 4.In order that fitting result is more accurate, need
Consider that bubble detonator affects, due to needing to destroy shell and consumed energy after blasting cap initiation, can not be simply logical when therefore calculating
Cross quick-fried ratio of specific heat value to confirm the equivalent dose of detonator, the present embodiment detonator is individually exploded after the gas bubble pulsation cycle and explosive gas
Bubble pulsation period matching together, makes fitting correlation coefficient reach optimum (0.99989) by the equivalent mass adjusting detonator, finally
Determine that detonator during measurement is equivalent to 1.4g explosive, the result of matching is：A=0.2386, b=-0.0189, thus public by calculating
Shi Ke get：C=-0.331986884s-1.
Then derivation temperature subtracts prestige degree computing formula, and the derivation that described temperature subtracts prestige degree computing formula is as follows：
1) gross energy of explosive underwater explosion is considered as initial Charpy wave energy and ratio bubble energy sum, for same class
Type explosive, the ratio change that can account for gross energy than bubble is less, reflects total energy to a certain extent than the size of bubble energy
The size of amount；Wherein, underwater explosion is as follows than bubble energy computing formula：
Wherein, EbIt is ratio bubble energy, unit is MJ/kg；TbFor gas bubble pulsation cycle first time, unit is s；W is explosive matter
Amount, unit is kg；k1For intrinsic constant, C is the correction coefficient of boundary effect；
2) in identical experiment condition, parameter k1Keep constant with C, using first time gas bubble pulsation periodic attenuation situation table
Levy the degree that explosive energy increases with the heating water bath time and decays, the i.e. correction according to gas bubble pulsation cycle and boundary effect
Coefficient calculates temperature and subtracts prestige degree, and it is as follows that temperature subtracts prestige degree computing formula：
Wherein, dtSubtract prestige degree, dimensionless for temperature；TbwFor not carrying out the gas bubble pulsation cycle of heating water bath, unit is s；
TbsFor the gas bubble pulsation cycle after heating water bath, unit is s；TblFor the gas bubble pulsation cycle of detonator under same experimental conditions, list
Position is s；C is the correction coefficient of boundary effect, and t is the heating water bath time, and unit is h.
Embodiment 3：
It is in place of the present embodiment and the difference of embodiment 2：In step 6, described temperature subtracts the derivation of prestige degree computing formula
Process is as follows：
1), after explosive explodes under water, the cycle of first time gas bubble pulsation is as follows：
Wherein, TbFor gas bubble pulsation cycle first time, K is coefficient, and ρ is fluid density, and W is quality of explosive, and Q is that explosive is quick-fried
Heat, PkTotal water pressure for shot depth；
2) makeAbove formula is rewritten as：
3) under specific experimental conditions it is assumed that k immobilizes, i.e. the energy of same type explosive and its gas bubble pulsation cycle
Cube is directly proportional, and it is as follows that temperature subtracts prestige degree computing formula：
Wherein, dtSubtract prestige degree, T for temperaturebwFor not carrying out the gas bubble pulsation cycle of heating water bath, TbsAfter heating water bath
The gas bubble pulsation cycle, TblFor the gas bubble pulsation cycle of detonator under same experimental conditions, t is the heating water bath time.
In above-described embodiment 2 and embodiment 3, explosive cartridge bag by No. 8 cap sensitives, so regardless of cartridge bag either with or without send out
Raw temperature subtracts prestige, and the pulsation of its shot bubble always comprises the contribution of a detonator, i.e. TbwWith TbsIn include Tbl.When cartridge bag dissipates
After losing cap-sensitivity, only one blasting cap detonation, therefore Tbs=Tbl, now d is understood by computing formulat=1；When cartridge bag does not occur
When temperature subtracts prestige, Tbw=Tbs, d can be obtained by computing formulat=0, i.e. 0≤dt≤ 1, dtThe size of value reflects explosive occurrence temperature
Subtract the complexity of prestige, its value closer to 1, subtracts that prestige degree is bigger, thus temperature is subtracted the sign quantification of prestige, more can reflect that this is existing
The essential speciality of elephant；Subtract the less explosive of prestige angle value and be more not susceptible to temperature and subtract prestige, resisting temperature performance is better.Due to TbwWith TbsAll
For the mean value of many experiments, the therefore T of testbsValue is it is possible that be more than TbwOr it is less than TblSituation, thus cause
dt＜ 0 or dtThe calculated value of ＞ 1, d in this casetValue take 0 and 1 respectively because explosive now or completely blast or
Scattered and disappeared cap-sensitivity, and the result so processing meets objective reality.
Subtract the sensitization of prestige degree computing formula calculated perlite according to two kinds of temperature of above-described embodiment 2 and embodiment 3
Explosive subtract Wei Du and heating water bath time relationship, (in figure circle is to subtract prestige degree meter according to the temperature of embodiment 2 as shown in Figure 5
Calculate that formula is calculated subtracts prestige degree, triangle is to subtract according to the temperature of embodiment 3 that prestige degree computing formula is calculated to subtract prestige
Degree), subtracting prestige degree using the explosive of perlite sensitization increases with the increase of heating water bath time, therefore according to first time bubble arteries and veins
The temperature of dynamic computation of Period subtracts prestige degree and may determine that energy attenuation degree after explosive heating water bath.
In sum, the utility model can be decayed to explosive energy in actual applications the quantitatively characterizing heating water bath time
Influence degree, thus instruct the blasting scheme in high temperature flame range to design.
The above, only the utility model patent preferred embodiment, but the protection domain of the utility model patent is simultaneously
It is not limited to this, the quantity of such as pressure sensor can make change according to actual needs, any be familiar with the art
In scope disclosed in the utility model patent for the technical staff, the technical scheme according to the utility model patent and its practicality are new
Equivalent or the change in addition of type inventional idea, broadly falls into the protection domain of the utility model patent.
Claims (8)
1. a kind of explosive temperature subtracts the measurement apparatus of prestige degree, including explosive it is characterised in that：Also include underwater explosion tank, pressure
Sensor and oscillograph, described explosive is placed in underwater explosion tank after heating water bath, and described pressure sensor is placed on
In underwater explosion tank, and it is connected with oscillograph.
2. a kind of explosive temperature according to claim 1 subtract prestige degree measurement apparatus it is characterised in that：Described water-bath refers to
Water-bath in constant temperature water box, described constant temperature water box adjustable water bath temperature, for simulating water in high temperature blasthole for the powder stick
Bath environment.
3. a kind of explosive temperature according to claim 2 subtract prestige degree measurement apparatus it is characterised in that：Described constant temperature water bath
The temperature regulating range of case is between room temperature and 100 DEG C.
4. a kind of explosive temperature according to any one of claim 1-3 subtract prestige degree measurement apparatus it is characterised in that：Described
Explosive and pressure sensor are in the same depth in underwater explosion tank.
5. a kind of explosive temperature according to any one of claim 1-3 subtract prestige degree measurement apparatus it is characterised in that：Described
Explosive is emulsion.
6. a kind of explosive temperature according to claim 5 subtract prestige degree measurement apparatus it is characterised in that：Described emulsion
By physical sensitization agent or chemical sensitizer sensitization.
7. a kind of explosive temperature according to any one of claim 1-3 subtract prestige degree measurement apparatus it is characterised in that：Described
Underwater explosion tank is the blasting pot with some strength.
8. a kind of explosive temperature according to claim 7 subtract prestige degree measurement apparatus it is characterised in that：Described underwater explosion
Tank is steel cylinder tank.
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| CN201620769725.1U CN205958501U (en) | 2016-07-20 | 2016-07-20 | Measurement device for explosive temperature subtracts majestic degree |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106248732A (en) * | 2016-07-20 | 2016-12-21 | 宏大矿业有限公司 | A kind of explosive temperature subtracts measurement apparatus and the characterizing method of prestige degree |
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| CN106248732A (en) * | 2016-07-20 | 2016-12-21 | 宏大矿业有限公司 | A kind of explosive temperature subtracts measurement apparatus and the characterizing method of prestige degree |
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