CN105628519A - Dynamic impact experiment system and method of corrosion coal containing gas - Google Patents
Dynamic impact experiment system and method of corrosion coal containing gas Download PDFInfo
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- CN105628519A CN105628519A CN201610225604.5A CN201610225604A CN105628519A CN 105628519 A CN105628519 A CN 105628519A CN 201610225604 A CN201610225604 A CN 201610225604A CN 105628519 A CN105628519 A CN 105628519A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
Abstract
The invention discloses a dynamic impact experiment system and method of corrosion coal containing gas. The system comprises an impact member system, an exhausting system, a gas feeding system and a corrosion working system, wherein the impact member system comprises an incidence rod, a transmission rod, a flexible patch, a coal sample, a steel cavity, a sealing washer, a fastening bolt, a nut, a YX-type sealing ring, a pressure sensor, a pressure gauge, a data acquisition instrument, tempered glass, an O-shaped sealing washer and a bolt; the exhausting system comprises an exhausting valve and a vacuum pump; the gas feeding system comprises a gas feeding valve, a solenoid valve, a decompression valve and a high-pressure gas bottle; and the corrosion working system comprises a solution box, a corrosion solution, a heater, a first brake valve, a first liquid pump, a first flow meter, a second brake valve, a third brake valve, a second liquid pump, a second flow meter and a fourth brake valve. According to the invention, response properties of the coal which is deeply influenced by environment temperatures and is corroded by underwater or a hydraulic measurement working solution can be researched after the coal is subjected to impact power, and the dynamic impact experiment system and method have theory and engineering practice meanings.
Description
Technical field
The present invention relates to coal petrography laboratory experiment studying technological domain, especially relate to a kind of containing gas corrosion coal impact experiment system and method.
Background technology
In process of coal mining, often the impact loadings such as gas explosion, explosive charge, rock burst can be run into, owing to there is significant difference under the mechanical response of object under shock load and static load, inertial effect and strain rate effect must be considered, namely understand the mechanical response of coal petrography under shock load coal mining and diaster prevention and control is significant. 1914, B.Hopkinson devised HopkinsonPressureBar (being called for short HPB), in order to study pressure vs time when explosive charge or bullet shooting incidence rod end. 1949, Kolsky became Hopkinson depression bar into separate type, in order to the dynamic response characteristic of research material under high strain-rate and constitutive relation thereof, formed Split Hopkinson Bar technology (being called for short SHPB technology), for a long time, it is as a kind of effectively laboratory facilities of the materials such as metal, pottery, rubber, foam, concrete, rock mechanical response under high strain-rate. at present, existing a lot of scholar has carried out the researchs such as the experimental technique under moving load and means by means of SHPB technology, the coupled static-dynamic loadingi rock mechanics experimental technique of the such as invention such as Li Xi soldier and device (ZL200510032031.6), the general Hopkinson bar device for compression load and stretching load (ZL200910044405.4) of the invention such as Chen Rong, magnetic resistance formula pulling and pressing integratedization miniature Hopkinson bar device (ZL201210367229.X) of the invention such as Liu Zhanwei, Sun Guang waits a kind of Hopkinson pressure bar experiment device (ZL201410128753.0) of invention forever, the nonstorage calorifier for high-temperature Hopkinson pressure bar experiment (ZL201210567036.9) of invention is waited in Li Peng south, the ring for large-diameter Hopkinson pressure bar of the inventions such as Su Hao raises is to pressurizing device (ZL201310566816.6) etc. but, the relevant experiments supporting method for coal is relative with means less, such as, under the impact loading of the invention such as Wang Dengke coal containing methane gas seepage flow experiment system (ZL201520349249.3) etc., for the coal under deep lower and underground water influenced by ambient temperature or waterpower measure working fluid corrosion, response characteristic experiment research means and method after being subject to dynamic impact problem effect also do not have, so, in order to the mechanical characteristic under various conditions of Study on Coal better, be necessary to invent a kind of based on SHPB containing gas corrosion coal impact experiment system and method, it has theoretical and engineering practice meaning.
Summary of the invention
For the problems referred to above, it is an object of the invention to put forward one containing gas corrosion coal impact experiment system and method, by grasping the dynamic impulsion response characteristic containing gas corrosion coal, it is that correlation engineering construction in colliery provides foundation with diaster prevention and control.
For achieving the above object, the present invention is by the following technical solutions:
A kind of containing gas corrosion coal impact experiment system, it comprises impact structure system, exhaust system, inlet system and corrosion work system; Impact structure system comprises incident bar, transmission bar, flexible patch, coal sample, steel chamber, seal washer, locks bolt, nut, YXRunddichtringO, pressure transmitter, tensimeter, data collecting instrument, toughened glass, O grommet type seal circle and bolt; Exhaust system comprises vent valve, vacuum pump; Inlet system comprises intake valve, magnetic valve, reducing valve, gas cylinder; Corrosion work system comprises liquor box, corrosion liquid, well heater, the first gate valve, the first liquid pump, first-class gauge, the 2nd gate valve, the 3rd gate valve, the 2nd liquid pump, second gauge, the 4th gate valve; Described incident bar and transmission bar pass through YXRunddichtringO is positioned over both sides, steel chamber; Described coal sample is positioned at steel chamber, and coal sample side is flexible patch and incident bar, and another side is transmission bar; Described steel chamber divide upper and lower two portions and by seal washer, lock bolt and nut is fixed; Described pressure transmitter and tensimeter are arranged at steel top of chamber, and the data of pressure transmitter are gathered by data collecting instrument; Described toughened glass is fixed on steel chamber by O grommet type seal circle and bolt, dynamically observes during in order to test; The pipeline that described vacuum pump is connected with steel chamber arranges vent valve; The pipeline that described gas cylinder is connected with steel chamber arranges reducing valve, magnetic valve and intake valve; In described liquor box, splendid attire is by HF, HCl, H2SO4��KHSO4Or HNO3Configuration PH is the corrosion liquid of 4��7 or configures, by NaOH or KOH, the corrosion liquid that PH is 7��10, it is the heating of corrosion liquid that liquor box one end arranges well heater, the liquor box the other end arranges outlet and the entrance of corrosion liquid, two articles of pipelines that liquor box is connected are provided with the first gate valve, the first liquid pump, first-class gauge and the 2nd gate valve respectively, the 3rd gate valve, the 2nd liquid pump, second gauge and the 4th gate valve with steel chamber.
Further, on described incident bar, flexible patch, the same straight line of coal sample and transmission bar place, incident bar is positioned at 1/3 place more than bottom, steel chamber; Described flexible patch is 3��10mm aluminium sheet; The two portions up and down in described steel chamber are split in 1/5 place below top, steel chamber.
Further, described intake valve and vent valve are connected by threeway, exhaust system and inlet system common pall between threeway and steel chamber, and line end is located at steel top of chamber.
Further, the line end side connecting the first gate valve, the first liquid pump, first-class gauge and the 2nd gate valve in described corrosion work system be positioned at liquor box more than bottom 10��20mm place and as the outlet of corrosion liquid, another side is positioned at 1/3 place below top, steel chamber; Described corrosion work system connects the 3rd gate valve, the 2nd liquid pump, second gauge and the 4th gate valve line end side be positioned at liquor box below top 10��20mm place and as the entrance of corrosion liquid, another side be positioned at steel chamber more than bottom 10��15mm place and in steel chamber, ingress to pipeline arranges filtering net.
Utilize the method carrying out containing gas corrosion coal impact experiment system testing, comprising:
1) after incidence bar, transmission bar, flexible patch, coal sample being placed, pad upper sealing washer up and down between two portions in steel chamber, fix by locking bolt and nut seal;
2) keep the closing condition of intake valve, the 2nd gate valve and the 3rd gate valve, open vent valve, open vacuum pump and steel chamber is vacuumized, after meeting requirement of experiment by tensimeter observation, close vacuum pump and vent valve;
3) opening reducing valve, magnetic valve and intake valve, gas enters steel chamber from gas cylinder, observed pressure representative value, after reaching requirement of experiment gas pressure; 1. closing reducing valve, magnetic valve and intake valve, open data collecting instrument simultaneously and gather the pressure change of pressure transmitter in coal sample adsorption gas process, after 6��30 hours, coal sample is filled gas and is terminated, and closes data collecting instrument; Or 2. keeping reducing valve, magnetic valve and inlet open state, after 6��30 hours, close reducing valve, magnetic valve and intake valve, coal sample is filled gas and is terminated;
4) being put in liquor box by the corrosion liquid configured, corrosion liquid is heated to 20��70 DEG C by heater; Open the first gate valve, the first liquid pump, first-class gauge and the 2nd gate valve, corrosion liquid after heating enters in steel chamber, after corrosion liquid floods coal sample, open the 3rd gate valve, the 2nd liquid pump, second gauge and the 4th gate valve and make corrosion liquid by regulation flow pump around circuit in liquor box, corrosion liquid constantly circulates in liquor box and steel chamber, not only maintains the flow state of corrosion liquid but also maintain residing temperature environment; Open data collecting instrument gather pressure transmitter coal sample in corrosion process pressure change;
5), after 0.5��6 day, utilize separate type Hopkinson bar device to carry out Impulsive load, and undertaken observing and recording experimentation by toughened glass;
6) by and neither adsorption gas again the coal sample of not corrosion, an adsorption gas but the comparative analysis of the Impulsive load of the coal sample of not corrosion experiment, draw the dynamic impulsion response characteristic containing gas corrosion coal.
The invention has the beneficial effects as follows: the coal under deep lower and underground water influenced by ambient temperature or waterpower measure working fluid corrosion can be studied by the present invention, response characteristic after being subject to dynamic impact problem effect, for the construction of colliery correlation engineering and diaster prevention and control provide foundation, there is theoretical and engineering practice meaning.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of side, steel chamber.
Wherein: 1 incident bar; 2 transmission bars; 3 flexible patch; 4 coal samples; 5 steel chambeies; 6 seal washers; 7 lock bolt; 8 nuts; 9 YXRunddichtringO; 10 pressure transmitters; 11 tensimeters; 12 data collecting instruments; 13 vent valves; 14 vacuum pumps; 15 intake valves; 16 magnetic valves; 17 reducing valve; 18 gas cylinders; 19 liquor boxs; 20 corrosion liquid; 21 well heaters; 31 first gate valves; 32 first liquid pumps; 33 first-class gauge; 34 the 2nd gate valves; 35 the 3rd gate valves; 36 the 2nd liquid pumps; 37 second gauge; 38 the 4th gate valves; 41 toughened glass; 42 O grommet type seal circles; 43 bolts.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further elaborated.
The structural representation being illustrated in figure 1 the present invention, comprises impact structure system, exhaust system, inlet system and corrosion work system containing gas corrosion coal impact experiment system; Wherein impact structure system comprise incident bar 1, transmission bar 2, flexible patch 3, coal sample 4, steel chamber 5, seal washer 6, lock bolt 7, nut 8, YXRunddichtringO 9, pressure transmitter 10, tensimeter 11, data collecting instrument 12, toughened glass 41, O grommet type seal circle 42 and bolt 43 (as shown in Figure 2); Exhaust system comprises vent valve 13, vacuum pump 14; Inlet system comprises intake valve 15, magnetic valve 16, reducing valve 17, gas cylinder 18; Corrosion work system comprises liquor box 19, corrosion liquid 20, well heater 21, first gate valve 31, first liquid pump 32, first-class gauge 33, the 2nd gate valve 34, the 3rd gate valve 35, the 2nd liquid pump 36, second gauge 37, the 4th gate valve 38.
Wherein incident bar 1 and transmission bar 2 pass through YXRunddichtringO 9 is positioned over both sides, steel chamber 5, and incident bar 1 is positioned at 1/3 place more than bottom, steel chamber 5; Coal sample 4 is positioned at steel chamber 5, and coal sample 4 side is flexible patch 3 and incident bar 1, and flexible patch 3 is that 3��10mm aluminium sheet is intended to weaken dispersion effect, and another side is transmission bar 2, on incident bar 1, flexible patch 3, the same straight line of coal sample 4 and transmission bar 2 place; About 5 points, steel chamber two portions and by seal washer 6, lock bolt 7 and nut 8 is fixed, upper and lower two portions are split in 1/5 place below top, steel chamber 5; Pressure transmitter 10 and tensimeter 11 are arranged at top, steel chamber 5, and the data of pressure transmitter 10 are gathered by data collecting instrument 12; Toughened glass 41 is fixed on steel chamber 5 by O grommet type seal circle 42 and bolt 43, dynamically observes during in order to test; The pipeline that vacuum pump 14 is connected with steel chamber 5 arranges vent valve 13; The pipeline that gas cylinder 18 is connected with steel chamber 5 arranges reducing valve 17, magnetic valve 16 and intake valve 15; Intake valve 15 and vent valve 13 are connected by threeway, exhaust system and inlet system common pall between threeway and steel chamber 5, and line end is located at top, steel chamber 5; In liquor box 19, splendid attire is by HF, HCl, H2SO4��KHSO4Or HNO3Configuration PH is the corrosion liquid 20 of 4��7 or configures, by NaOH or KOH, the corrosion liquid 20 that PH is 7��10, liquor box 19 one end arranges well heater 21 and heats for corrosion liquid 20, liquor box 19 the other end arranges outlet and the entrance of corrosion liquid 20, two articles of pipelines that liquor box 19 is connected with steel chamber 5 are provided with the first gate valve 31, first liquid pump 32, first-class gauge 33 and the 2nd gate valve the 34, three gate valve 35, the 2nd liquid pump 36, second gauge 37 and the 4th gate valve 38 respectively; The line end side connecting the first gate valve 31, first liquid pump 32, first-class gauge 33 and the 2nd gate valve 34 be positioned at liquor box 19 more than bottom 10��20mm place and as the outlet of corrosion liquid 20, another side is positioned at 1/3 place below top, steel chamber 5; The line end side connecting the 3rd gate valve 35, the 2nd liquid pump 36, second gauge 37 and the 4th gate valve 38 be positioned at liquor box 19 below top 10��20mm place and as the entrance of corrosion liquid 20, another side be positioned at steel chamber 5 more than bottom 10��15mm place and in the ingress of steel chamber 5 to pipeline, filtering net is set.
Utilize the method carrying out containing gas corrosion coal impact experiment system testing, comprising:
1) the separate type basic component of Hopkinson bar is filled, and after placing incident bar 1, transmission bar 2, flexible patch 3, coal sample 4, pad upper sealing washer 6 up and down between two portions in steel chamber 5, seal fixing by locking bolt 7 and nut 8;
2) keep the closing condition of intake valve 15, the 2nd gate valve 34 and the 3rd gate valve 35, open vent valve 13, open vacuum pump 14 and steel chamber 5 is vacuumized, after meeting requirement of experiment by tensimeter 11 observation, close vacuum pump 14 and vent valve 13;
3) opening reducing valve 17, magnetic valve 16 and intake valve 15, gas enters steel chamber 5 from gas cylinder 18, observed pressure table 11 indicating value, after reaching requirement of experiment gas pressure; 1. closing reducing valve 17, magnetic valve 16 and intake valve 15, open data collecting instrument 12 simultaneously and gather the pressure change of pressure transmitter 10 in coal sample 4 adsorption gas process, after 6��30 hours, coal sample 4 is filled gas and is terminated, and closes data collecting instrument 12; Or 2. keeping reducing valve 17, magnetic valve 16 and intake valve 15 opened condition, after 6��30 hours, close reducing valve 17, magnetic valve 16 and intake valve 15, coal sample 4 is filled gas and is terminated;
4) being put in liquor box 19 by the corrosion liquid 20 configured, corrosion liquid 20 is heated to 20��70 DEG C by heater 21; Open the first gate valve 31, first liquid pump 32, first-class gauge 33 and the 2nd gate valve 34, corrosion liquid 20 after heating enters in steel chamber 5, flood after coal sample 4 until corrosion liquid 20, open the 3rd gate valve 35, the 2nd liquid pump 36, second gauge 37 and the 4th gate valve 38 and make corrosion liquid 20 by regulation flow pump around circuit in liquor box 19, corrosion liquid 20 constantly circulates in liquor box 19 and steel chamber 5, not only maintains the flow state of corrosion liquid 20 but also maintain residing temperature environment; Open data collecting instrument 12 gather pressure transmitter 10 coal sample 4 in corrosion process pressure change;
5), after 0.5��6 day, utilize separate type Hopkinson bar device to carry out Impulsive load, utilize high speed video camera to be undertaken observing and recording experimentation by toughened glass 41;
6) by and neither adsorption gas again the coal sample 4 of not corrosion, an adsorption gas but the comparative analysis of the Impulsive load of the coal sample 4 of not corrosion experiment, draw the dynamic impulsion response characteristic containing gas corrosion coal.
Last it should be noted that above content is only for illustration of the technical scheme of the present invention, but not its protection domain is limited, the related amendments that the present invention is carried out by those skilled in the art, all do not depart from the useful range of technical solution of the present invention.
Claims (5)
1. one kind contains gas corrosion coal impact experiment system, it is characterised in that, comprise impact structure system, exhaust system, inlet system and corrosion work system; Impact structure system comprises incident bar (1), transmission bar (2), flexible patch (3), coal sample (4), steel chamber (5), seal washer (6), lock bolt (7), nut (8), YXRunddichtringO (9), pressure transmitter (10), tensimeter (11), data collecting instrument (12), toughened glass (41), O grommet type seal circle (42) and bolt (43); Exhaust system comprises vent valve (13), vacuum pump (14); Inlet system comprises intake valve (15), magnetic valve (16), reducing valve (17), gas cylinder (18); Corrosion work system comprises liquor box (19), corrosion liquid (20), well heater (21), the first gate valve (31), the first liquid pump (32), first-class gauge (33), the 2nd gate valve (34), the 3rd gate valve (35), the 2nd liquid pump (36), second gauge (37), the 4th gate valve (38); Described incident bar (1) and transmission bar (2) pass through YXRunddichtringO (9) is positioned over steel chamber (5) both sides; Described coal sample (4) is positioned at steel chamber (5), and coal sample (4) side is flexible patch (3) and incident bar (1), and another side is transmission bar (2); Described steel chamber (5) point upper and lower two portions and by seal washer (6), lock bolt (7) and nut (8) fixing; Described pressure transmitter (10) and tensimeter (11) are arranged at steel chamber (5) top, and the data of pressure transmitter (10) are gathered by data collecting instrument (12); Described toughened glass (41) is fixed on steel chamber (5) by O grommet type seal circle (42) and bolt (43), dynamically observes during in order to test; The pipeline that described vacuum pump (14) is connected with steel chamber (5) arranges vent valve (13); The pipeline that described gas cylinder (18) is connected with steel chamber (5) arranges reducing valve (17), magnetic valve (16) and intake valve (15); Described liquor box (19) interior splendid attire is by HF, HCl, H2SO4��KHSO4Or HNO3Configuration PH is the corrosion liquid (20) of 4��7 or configures, by NaOH or KOH, the corrosion liquid (20) that PH is 7��10, liquor box (19) one end arranges well heater (21) for corrosion liquid (20) heating, liquor box (19) the other end arranges outlet and the entrance of corrosion liquid (20), two pipelines that liquor box (19) is connected with steel chamber (5) are provided with the first gate valve (31) respectively, first liquid pump (32), first-class gauge (33) and the 2nd gate valve (34), 3rd gate valve (35), 2nd liquid pump (36), second gauge (37) and the 4th gate valve (38).
2. one according to claim 1 is containing gas corrosion coal impact experiment system, it is characterized in that, on described incident bar (1), flexible patch (3), the same straight line of coal sample (4) and transmission bar (2) place, incident bar (1) is positioned at steel chamber (5) 1/3 place more than bottom; Described flexible patch (3) is 3��10mm aluminium sheet; Two portions up and down of described steel chamber (5) are split in steel chamber (5) 1/5 place below top.
3. one according to claim 1 is containing gas corrosion coal impact experiment system, it is characterized in that, described intake valve (15) and vent valve (13) are connected by threeway, exhaust system and inlet system common pall between threeway and steel chamber (5), and line end is located at steel chamber (5) top.
4. one according to claim 1 is containing gas corrosion coal impact experiment system, it is characterized in that, the line end side connecting the first gate valve (31), the first liquid pump (32), first-class gauge (33) and the 2nd gate valve (34) in described corrosion work system be positioned at liquor box (19) more than bottom 10��20mm place and as the outlet of corrosion liquid (20), another side is positioned at steel chamber (5) 1/3 place below top; Described corrosion work system connects the 3rd gate valve (35), the 2nd liquid pump (36), second gauge (37) and the 4th gate valve (38) line end side be positioned at liquor box (19) below top 10��20mm place and as the entrance of corrosion liquid (20), another side be positioned at steel chamber (5) more than bottom 10��15mm place and in steel chamber (5) to the ingress of pipeline, filtering net is set.
5. one kind utilizes the method carrying out testing described in claim 1 containing gas corrosion coal impact experiment system, it is characterised in that, comprising:
1) after incidence bar (1), transmission bar (2), flexible patch (3), coal sample (4) being placed, upper sealing washer (6) is padded up and down between two portions in steel chamber (5), fixing by locking bolt (7) and nut (8) sealing;
2) closing condition of intake valve (15), the 2nd gate valve (34) and the 3rd gate valve (35) is kept, open vent valve (13), open vacuum pump (14) steel chamber (5) to be vacuumized, after meeting requirement of experiment by tensimeter (11) observation, close vacuum pump (14) and vent valve (13);
3) reducing valve (17), magnetic valve (16) and intake valve (15) is opened, gas enters steel chamber (5) from gas cylinder (18), observed pressure table (11) indicating value, after reaching requirement of experiment gas pressure; 1. reducing valve (17), magnetic valve (16) and intake valve (15) is closed, open data collecting instrument (12) simultaneously and gather the pressure change of pressure transmitter (10) in coal sample (4) adsorption gas process, after 6��30 hours, coal sample (4) is filled gas and is terminated, and closes data collecting instrument (12); Or 2. keep reducing valve (17), magnetic valve (16) and intake valve (15) opened condition, after 6��30 hours, closing reducing valve (17), magnetic valve (16) and intake valve (15), coal sample (4) is filled gas and is terminated;
4) being put in liquor box (19) by the corrosion liquid (20) configured, corrosion liquid (20) is heated to 20��70 DEG C by heater (21); Open the first gate valve (31), the first liquid pump (32), first-class gauge (33) and the 2nd gate valve (34), corrosion liquid (20) after heating enters in steel chamber (5), flood after coal sample (4) until corrosion liquid (20), open the 3rd gate valve (35), the 2nd liquid pump (36), second gauge (37) and the 4th gate valve (38) and make corrosion liquid (20) by regulation flow pump around circuit in liquor box (19); Open data collecting instrument (12) gather pressure transmitter (10) coal sample (4) in corrosion process pressure change;
5) after 0.5��6 day, utilize separate type Hopkinson bar device to carry out Impulsive load, and undertaken observing and recording experimentation by toughened glass (41);
6) by and neither adsorption gas again the coal sample (4) of not corrosion, an adsorption gas but the comparative analysis of the Impulsive load of the coal sample of not corrosion (4) experiment, draw the dynamic impulsion response characteristic containing gas corrosion coal.
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| CN113432992A (en) * | 2021-06-08 | 2021-09-24 | 太原理工大学 | Water-gas-temperature multi-field coupling Hopkinson pressure bar test loading system and method |
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| CN113432992A (en) * | 2021-06-08 | 2021-09-24 | 太原理工大学 | Water-gas-temperature multi-field coupling Hopkinson pressure bar test loading system and method |
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Application publication date: 20160601 |