CN202916270U - Coal bed outburst-prevention gas content measuring device capable of performing underground measurement - Google Patents
Coal bed outburst-prevention gas content measuring device capable of performing underground measurement Download PDFInfo
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- CN202916270U CN202916270U CN 201220569771 CN201220569771U CN202916270U CN 202916270 U CN202916270 U CN 202916270U CN 201220569771 CN201220569771 CN 201220569771 CN 201220569771 U CN201220569771 U CN 201220569771U CN 202916270 U CN202916270 U CN 202916270U
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Abstract
The utility model discloses a coal bed outburst-prevention gas content measuring device capable of performing underground measurement. The measuring device comprises an underground coring device, a coal sample cylinder, a grinder and an underground desorption instrument. A coal sample obtained by the underground coring device is put into the coal sample cylinder; the coal sample cylinder is connected with a first exhaust rubber tube through a valve; the grinder is provided with a material bowl body which is connected with a second exhaust rubber tube; and either the first exhaust rubber tube or the second exhaust rubber tube is connected with the underground desorption instrument. Through the adoption of the measuring device, the time spent in conveying the underground coal sample out of a pit and desorbing the coal sample after sampling is saved, the loss of gas in the conveying process of the coal sample is reduced, the gas extraction effect is evaluated quickly, the outburst danger is forecasted in time, and the timeliness of gas prevention and treatment work is enhanced.
Description
Technical field
The utility model relates to a kind of coal seam gas-bearing capacity determinator, but particularly about a kind of coal seam outburst-prevention gas content testing device of underground survey.
Background technology
The original gas bearing capacity in coal seam is one of important parameter that carries out Forecast of Gas Emission, gas pumping effect assessment and coal and gas outburst risk prediction, is the basis of all Firedamp precaution measures.How the original gas bearing capacity in rapid and accurate determination coal seam is a mine gas prevention and control work difficult problem anxious to be resolved always.
According to " coal mine gas drainage basic demand " industry standard, but its evaluation extraction index up to standard is coal seam gas-bearing capacity and coal seam desorbing mash gas content.Studies show that of coal and gas outbursts Prediction, but influential to outburst hazard be the desorbing mash gas content of coal.Research measures that quantities less, determination period are short, but to measure accuracy rate higher and can carry out coal seam gas-bearing capacity and desorbing mash gas content that large gauge point measures and measure equipment, and uses it for coal and Gas Outburst (zone) prediction and to take out in advance effect assessment significant.
Only take a sample and simple desorb in the down-hole that is determined at of coal seam gas-bearing capacity at present, and other major parts are operated in the ground experiment chamber and carry out.Get the simple desorb of coal sample from the scene complete to taking ground experiment chamber mensuration, spend the time of several hours even tens hours, fast direct is obtained to get the gas bearing capacity value at the scene, thereby also can't make evaluation and outburst hazard is made fast prediction the gas pumping effect fast, affect the ageing of gas preventing and control work.
The utility model content
The purpose of this utility model is, but provide a kind of coal seam outburst-prevention gas content testing device of underground survey, it can be saved coal sample and take a sample the rear aboveground time that makes an explanation that brings to from the down-hole, reduce the loss of gas bearing capacity in the coal sample transportation, fast the gas pumping effect is made evaluation, in time outburst hazard is made prediction, strengthen the ageing of gas preventing and control work.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
But a kind of coal seam outburst-prevention gas content testing device of underground survey, described determinator comprises down-hole corer, coal sample cylinder, comminutor and down-hole desorption instrument, the coal sample that is obtained by the down-hole corer coal sample cylinder of packing into, be connected with the first exhaust hose by valve on the coal sample cylinder, comminutor has material alms bowl body, be connected with the second exhaust hose, one of them connecting downhole desorption instrument of first and second exhaust hose on the material alms bowl body.
But the coal seam outburst-prevention gas content testing device of aforesaid underground survey, described down-hole desorption instrument comprises tank, the first graduated cylinder, the first air-breathing sebific duct, the first air-breathing ball and level meter, the lower end of described the first graduated cylinder is connected in the tank, level meter is connected to a side of the first graduated cylinder, one end of described the first air-breathing sebific duct is connected to the upper end of the first graduated cylinder, the other end of the first air-breathing sebific duct connects the first air-breathing ball, and one of them of described first and second exhaust hose connects the lower end of the first graduated cylinder.
But the coal seam outburst-prevention gas content testing device of aforesaid underground survey, described down-hole desorption instrument also comprises the second graduated cylinder, the second air-breathing sebific duct and the second air-breathing ball, the lower end of described the second graduated cylinder is connected in the tank, the second graduated cylinder and first be arranged in parallel, and level meter is connected between first and second graduated cylinder, one end of described the second air-breathing sebific duct is connected to the upper end of the second graduated cylinder, the other end of the second air-breathing sebific duct connects the second air-breathing ball, and one of them of described first and second exhaust hose connects respectively the lower end of the first graduated cylinder or the second graduated cylinder.
But the coal seam outburst-prevention gas content testing device of aforesaid underground survey, the below of described the first air-breathing sebific duct is connected on the first graduated cylinder by the first spring clamp, and the below of described the second air-breathing sebific duct is connected on the second graduated cylinder by the second spring clamp.
But the coal seam outburst-prevention gas content testing device of aforesaid underground survey also comprises thermometer on the desorption instrument of described down-hole, and thermometer is plugged in the described tank, and is positioned at a side of described the first graduated cylinder; The bottom of down-hole desorption instrument also is provided with discharge orifice in the position of the bottom of tank.
But the coal seam outburst-prevention gas content testing device of aforesaid underground survey, described the first exhaust hose comprises the first U-shaped pipe, one end of the first U-shaped pipe is connected to the first exhaust hose away from an end of described coal sample cylinder, the other end of the first U-shaped pipe inserts in described the first graduated cylinder or the second graduated cylinder, and the first exhaust hose is connected with the 3rd spring clamp near the end of the first U-shaped pipe; Described the second exhaust hose comprises the second U-shaped pipe, one end of the second U-shaped pipe is connected to the second exhaust hose away from an end of described comminutor, the other end of the second U-shaped pipe inserts in described the first graduated cylinder or the second graduated cylinder, and the second exhaust hose is connected with the 4th spring clamp near the end of the second U-shaped pipe.
But the coal seam outburst-prevention gas content testing device of aforesaid underground survey, described the second exhaust hose connect the rubber plug of described material alms bowl body by piercing needle.
But the coal seam outburst-prevention gas content testing device of aforesaid underground survey, described comminutor also comprises source of the gas provisioning component and comminutor assembly, the source of the gas provisioning component connects the comminutor assembly via tracheae, described comminutor assembly comprises air motor, eccentric block, described material alms bowl body, impact ring, impact block and swing case, described air motor connects eccentric block, swing the top that case is installed in eccentric block, swing in the case and be placed with dismountable material alms bowl body, be placed with in the material alms bowl body and impact ring, impact in the ring and be placed with impact block, the top of material alms bowl body has material alms bowl lid, and the material alms bowl covers has described rubber plug.
But the coal seam outburst-prevention gas content testing device of aforesaid underground survey, described comminutor assembly also comprises panel, the first spring, the second spring, pallet and supporting leg; Panel is connected with the pallet upside by the first spring, and pallet is fixedly connected with the bottom that swings case by the second spring, and three adjustable legs are fixedly connected on the pallet downside.
But the coal seam outburst-prevention gas content testing device of aforesaid underground survey, described source of the gas provisioning component is comprised of rapid-acting coupling, ball valve and pneumatic triple piece, ball valve is connected with the air intake opening of pneumatic triple piece, rapid-acting coupling is connected with the air intake opening of ball valve, and the gas outlet of pneumatic triple piece links to each other with the air intake opening of described air motor.
But characteristics and the advantage of the coal seam outburst-prevention gas content testing device of underground survey of the present utility model are: it is on the basis of realizing the coal seam gas-bearing capacity measurement function, increase the down-hole and pulverized the function of measuring coal sample, reduced the loss of gas bearing capacity in the coal sample transportation, and can be fast make the gas pumping effect and estimate and outburst hazard is made prediction, strengthen the ageing of gas preventing and control work.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
But Fig. 1 is the synoptic diagram of down-hole desorption instrument of the coal seam outburst-prevention gas content testing device of underground survey of the present utility model.
But Fig. 2 is the master of comminutor of the coal seam outburst-prevention gas content testing device of underground survey of the present utility model looks synoptic diagram.
But Fig. 3 is the schematic cross-section of comminutor of the coal seam outburst-prevention gas content testing device of underground survey of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Coal seam gas-bearing capacity is divided into: loss gas amount X1, the direct desorption quantity X2 of gas, pulverize desorption of mash gas amount X3, but normal pressure gas desorption quantity Xm, normal pressure can not coal seams gas discharging quantity Xb, coal seam gas-bearing capacity X.The utility model for " can carry out the coal seam outburst-prevention gas content of underground survey " but refer to normal pressure gas desorption quantity Xm.
As shown in Figure 1 to Figure 3, but the coal seam outburst-prevention gas content testing device of the underground survey that the utility model proposes, it comprises down-hole corer (not shown), coal sample cylinder 1, comminutor 2 and down-hole desorption instrument 3, the coal sample that is obtained by the down-hole corer coal sample cylinder 1 of packing into, be connected with the first exhaust hose 4 by valve on the coal sample cylinder 1, comminutor 2 has material alms bowl body 2a, be connected with the second exhaust hose 5 on the material alms bowl body 2a, first, two exhaust hoses 4, one of them connecting downhole desorption instrument 3 of 5, namely, as required, can select first row gas sebific duct 4 or the second exhaust hose 5 connecting downhole desorption instruments 3, the first, two exhaust hoses 4,5 is not connecting downhole desorption instrument 3 simultaneously.
Present embodiment is taken out the coal core by the down-hole corer in use from the coal seam degree of depth, in time enclose in the coal sample cylinder 1, and keep the valve in the coal sample cylinder 1 to be in opening.The first exhaust hose 4 connecting downhole desorption instruments 3 carry out the record of the velocity determination of coal sample desorption of mash gas and lost time by down-hole desorption instrument 3, carry out gas loss amount X by formula
1Calculating, and record gas direct desorption quantity X
2
Then, the first exhaust hose 4 is broken away from from down-hole desorption instrument 3, and with the second exhaust hose 5 connecting downhole desorption instruments 3, and will take by weighing the secondary coal sample after the weighing coal sample gross weight and put into the material alms bowl body 2a of comminutor 2, carry out normal pressure in the down-hole by down-hole desorption instrument 3 and pulverize desorb, and calculate pulverizing desorption of mash gas amount X with this
3But normal pressure desorbing mash gas content=X then
1+ X
2+ X
3
Wherein, foregoing description is the pattern of downhole operations fully.In addition, gas loss amount X
1With the direct desorption quantity X of gas
2Measurement can carry out in the down-hole, and about pulverizing desorption of mash gas amount X
3Measurement then can carry out aboveground, be about to sealing coal sample and bring to the ground experiment chamber, carry out normal pressure and pulverize desorb taking by weighing the secondary coal sample after the weighing coal sample gross weight, calculate with this and pulverize desorption of mash gas amount X
3, then be aboveground down-hole hybrid operational mode this moment.
Present embodiment can be realized coal bed drilling, gets core, measure the direct desorption quantity X of gas
2, calculate gas loss amount X
1, coal sample pulverizes, measures and pulverize desorption of mash gas amount X
3But, calculate the function such as normal pressure desorbing mash gas content Xm and all can finish in the down-hole.So can save coal sample takes a sample the rear aboveground time that makes an explanation that brings to from the down-hole, reduce the loss of gas bearing capacity in the coal sample transportation, fast the gas pumping effect is made evaluation, in time outburst hazard is made prediction, strengthen the ageing of gas preventing and control work.But normal pressure desorbing mash gas content Xm can be directly as the foundation of gas pumping effect assessment and coal and gas outburst risk prediction.
Certainly, further measure the original gas bearing capacity in coal seam such as need, can carry out water analysis to coal sample after, utilizing the Lang Gemiuer formula to calculate can not coal seams gas discharging quantity X
b, coal seam gas-bearing capacity X=Xm+X then
b
According to an embodiment of the present utility model, as shown in Figure 1, described down-hole desorption instrument 3 comprises tank 3a, the first graduated cylinder 3b, the first air-breathing sebific duct 3d, the first air-breathing ball 3f and level meter 3h, the lower end of described the first graduated cylinder 3b is connected in the tank 3a, level meter 3h is connected to the side of the first graduated cylinder 3b, level meter 3h is used for the first graduated cylinder 3b is vertical setting, the end of the described first air-breathing sebific duct 3d is connected to the upper end of the first graduated cylinder 3b, the other end of the first air-breathing sebific duct 3d connects the first air-breathing ball 3f, described first, two exhaust hoses 4, one of them of 5 connects the lower end of the first graduated cylinder 3b.
The down-hole desorption instrument 3 of present embodiment is adjusted by level meter 3h and to be made desorption instrument 3 be in horizontality and the first graduated cylinder 3b is vertical in use.The first air-breathing ball 3f bleeds, and makes the water among the tank 3a enter the first graduated cylinder 3b, and adjust in the first graduated cylinder 3b liquid level to 0 scale or following near.The lower end of the first exhaust hose 4 (perhaps the second exhaust hose 5 of comminutor 2) insertion first graduated cylinder 3b of the coal sample cylinder 1 of coal sample to be measured then will be housed, the gas bubble enters to the liquid level top of the first graduated cylinder 3b, promote liquid level downwards, with the desorption of mash gas amount of draining water gathering of gas law measurement coal sample, the precision of this down-hole desorption instrument 3 can reach 2ml.
Further, described down-hole desorption instrument 3 also comprises the second graduated cylinder 3c the second air-breathing sebific duct 3e and the second air-breathing ball 3g, the lower end of described the second graduated cylinder 3c is connected in the tank 3a, the second graduated cylinder 3c and the first graduated cylinder 3b be arranged in parallel, and level meter 3h is connected between first and second graduated cylinder 3b, the 3c, level meter 3h is used for first and second graduated cylinder 3b, 3c are vertical setting simultaneously, the end of the described second air-breathing sebific duct 3e is connected to the upper end of the second graduated cylinder 3c, and the other end of the second air-breathing sebific duct 3e connects the second air-breathing ball 3g.Described first and second exhaust hose 4,5 one of them connect respectively the lower end of the first graduated cylinder 3b or the second graduated cylinder 3c.
In the present embodiment, in the little situation of gas bearing capacity, a graduated cylinder can be only used, if gas bearing capacity is larger, the first graduated cylinder and the second graduated cylinder can be used successively.
The below of the described first air-breathing sebific duct 3d is connected on the first graduated cylinder 3b by the first spring clamp 3i, and the below of the described second air-breathing sebific duct 3e is connected on the second graduated cylinder 3c by the second spring clamp 3j.Furthermore, can the first spring clamp 3i be set at the first graduated cylinder 3b, when the first air intake duct 3d hangs down, its below is clamped by the first spring clamp 3i and is located, in like manner, can the second spring clamp 3j be set at the second graduated cylinder 3e, when the second air intake duct 3e hung down, its below was clamped by the second spring clamp 3j and is located.
Described the first exhaust hose 4 comprises the first U-shaped pipe 4a, the end of the first U-shaped pipe 4a is connected to the first exhaust hose 4 away from an end of described coal sample cylinder 1, the other end of the first U-shaped pipe 4a inserts in described the first graduated cylinder 3b or the second graduated cylinder 3c, and the first exhaust hose 4 also can be connected with the 3rd spring clamp 4b near the end of the first U-shaped pipe 4a.Described the second exhaust hose 5 comprises the second U-shaped pipe, one end of the second U-shaped pipe is connected to the second exhaust hose away from an end of described comminutor 2, the other end of the second U-shaped pipe inserts in described the first graduated cylinder 3b or the second graduated cylinder 3c, and the second exhaust hose 5 also can be connected with the 4th spring clamp near the end of the second U-shaped pipe.
Present embodiment take the first exhaust hose 4 as example, when waiting to need to measure, places the first exhaust hose 4 that the coal sample cylinder 1 of coal sample to be measured is housed the bottom inlet of the first graduated cylinder 3b in use by the first U-shaped pipe 4a.If in desorption process, desorb gas volume is during near 700ml, available the 3rd spring clamp 4b (or using hand) clamps the first exhaust hose and down-hole desorption instrument 3 disconnects, the first exhaust hose 4 is moved into fast the bottom inlet of the second graduated cylinder 3c, unclamp the 3rd spring clamp, make desorption instrument 3 under the first exhaust hose 4 connected wells, continue observational record.In like manner, the second exhaust hose 5 of comminutor also is so, does not repeat them here.
Also comprise thermometer 3k on the described down-hole desorption instrument 3, thermometer 3k is plugged among the described tank 3a, and is positioned at the side of described the first graduated cylinder 3b, and thermometer 3k is used for measuring the water temperature in the tank 3a.In addition, the bottom of down-hole desorption instrument 3 also is provided with discharge orifice 3m, and discharge orifice 3m is positioned at the bottom of tank 3a, behind end-of-job, can the water in the tank 3a be drained by discharge orifice 3m.
Described the second exhaust hose 5 connects the rubber plug 2b of described material alms bowl body 2a by piercing needle 6.
According to an embodiment of the present utility model, as shown in Figures 2 and 3, described comminutor 2 also comprises source of the gas provisioning component and comminutor assembly, the source of the gas provisioning component connects comminutor assembly 2e via tracheae 2c, described comminutor assembly 2e comprises air motor 2f, eccentric block 2g, described material alms bowl body 2a, impact ring 2h, impact block 2i and swing case 2j, described air motor 2f connects eccentric block 2g, swing the top that case 2j is installed in eccentric block 2g, swing among the case 2j and be placed with dismountable material alms bowl body 2a, be placed with in the material alms bowl body 2a and impact ring 2h, impact in the ring 2h and be placed with impact block 2i, the top of material alms bowl body 2a has material alms bowl lid 2k, has described rubber plug 2b on the material alms bowl lid 2k.。
The comminutor of present embodiment will expect that sample packs in the material alms bowl body 2a in use, cover material alms bowl lid 2i.The source of the gas provisioning component filters, divides oil and tolerance to regulate to supply compression air, pressurized air enters comminutor assembly 2e via tracheae 2c afterwards, drive air motor 2f, drive eccentric block 2g by air motor 2f and do High Rotation Speed, under the effect of centrifugal force, produce very strong exciting force, make the ginseng body-swing case 2j that shakes do regular vibration, place the material alms bowl body 2a that swings case 2j also to produce vibration thereupon, force impact ring 2j and impact block 2h in material alms bowl body 2a, the material sample to be clashed into, push, grinds, reach the purpose of pulverizing.Being tightly connected of material alms bowl lid 2i and material alms bowl body 2a can ensure an airtight crushing material environment, and after pulverizing was finished, material sample desorption gas can not lose, and satisfies the needs of measurement.
Described comminutor assembly 2e also comprises panel 2q, the first spring 2r, the second spring 2s, pallet 2t and supporting leg 2u.Panel 2q is connected with pallet 2t upside by the first spring 2r, and pallet 2t is fixedly connected with the bottom that swings case 2j by the second spring 2s, and pallet 2t downside is fixedly connected with three adjustable legs 2u.During arranging apparatus, can come equipment is carried out levelling by regulating three supporting leg 2u.
The source of the gas provisioning component is by rapid-acting coupling 2m, and ball valve 2n and pneumatic triple piece 2p form.Ball valve 2n is connected with the air intake opening of pneumatic triple piece 2p, and rapid-acting coupling 2m is connected with the air intake opening of ball valve 2n, and the gas outlet of pneumatic triple piece 2p links to each other with the air intake opening of air motor 2f.Wherein, pneumatic triple piece 2p generally comprises air strainer, reduction valve and oil sprayer.
In the present embodiment, comminutor 2e adopts pressurized air as power source, and the reduction valve among the pneumatic triple piece 2p can carry out voltage stabilizing to source of the gas, makes source of the gas be in steady state, can reduce when suddenling change because of source of the gas air pressure the damage to hardware such as valve or actuators; Ball valve 2n enters comminutor assembly 2e by control as the gas of power source and realizes unlatching or closing control to comminutor assembly 2e.Rapid-acting coupling 2m allows the user not need instrument just can realize pipeline connection or disconnection, thus convenient rapid deployment use for comminutor assembly 2e.
The comminutor of present embodiment, because it adopts gas as power source, so it can be worked in inflammable and explosive hazardous environment, simultaneously because it is closed container for the container that holds the material that needs pulverizing, so satisfying, it possesses the job requirement that sampling is pulverized in sealing, the comminutor that is to say present embodiment can be used in underground seal type analytical sampling crushed work, thereby greatly improve the work efficiency that mining industry is produced, effectively reduce the time of mensuration work, improve the mensuration precision of geologic media data.
The below illustrates the operating process of present embodiment with specific embodiment:
Require to sample according to the boring of corer size in needs sampling location construction predetermined depth with the colliery rules as required.For example, Φ 73 corer construction diameter are 90mm; Φ 89 corer construction diameter are 108mm.Utilize level meter 3h to be adjusted to desorption instrument 3 to level, the first graduated cylinder 3b plumbness.In desorption instrument 3 tank 3a, be filled to the groove height, utilize the first air-breathing ball 3f adjustment of bleeding, make the liquid level of the first graduated cylinder 3b carry to 0 scale or following near.The down-hole corer delivered to predetermined get the core degree of depth, get core.Record is got core start time and concluding time simultaneously.
The coal sample that obtains is carried out the coal sample cylinder 1 of packing into after the suitable sorting, tighten the coal sample cover, keep valve to be in opening; The first U-shaped pipe 4a of the first exhaust hose 4 is inserted the first graduated cylinder 3b, open stopwatch and begin timing and record the coal sample tinning time (beginning desorption time).Regularly read and record the liquid level scale until when liquid level descends less than 1 lattice (2ml) in one minute, the record final reading direct desorption quantity X2 of value gas and desorb concluding time.If in desorb observation, do not have gas overflowing, should check whether the outlet of gas outlet and coal sample cylinder stops up.As without stopping up, then be gas bearing capacity too small due to, at this moment, can stop observation.
Coal sample in the coal sample cylinder 1 is poured in the coal sample basin, further remove non-coal material after, from the coal sample basin, get the secondary coal sample of two parts of equal quantities, the quality of record secondary coal sample.The coal sample quality is 100～200g.Respectively two parts of secondary coal samples are put into the material alms bowl body 2a of comminutor, started comminutor and carry out the coal sample pulverizing.The second U-shaped pipe of the second exhaust hose 5 is placed the bottom inlet of the first graduated cylinder 3b, piercing needle is penetrated in the rubber plug 2b of material alms bowl lid, binder alms bowl body 2a and desorption instrument 3 carry out desorb with desorption instrument to the secondary coal sample.When treating that the gas desorption quantity is less than 4ml in 1 minute, desorb is complete, reads and records graduated cylinder and stop reading.
Carry coal sample to Ground analysis such as need, with the coal sample coal sample cylinder of packing into, screw bung, close needle valve.Calculate respectively Xm, X1, X2, X3 value according to the data of survey record, and result of calculation is exported trend map, printing reports.
The above only is several embodiment of the present utility model, and those skilled in the art can carry out various changes or modification to the utility model embodiment and do not break away from spirit and scope of the present utility model according to application documents are disclosed.
Claims (10)
1. but the coal seam outburst-prevention gas content testing device of a underground survey, it is characterized in that, described determinator comprises down-hole corer, coal sample cylinder, comminutor and down-hole desorption instrument, the coal sample that is obtained by the down-hole corer coal sample cylinder of packing into, be connected with the first exhaust hose by valve on the coal sample cylinder, comminutor has material alms bowl body, is connected with the second exhaust hose, one of them connecting downhole desorption instrument of first and second exhaust hose on the material alms bowl body.
2. but the coal seam outburst-prevention gas content testing device of underground survey according to claim 1, it is characterized in that, described down-hole desorption instrument comprises tank, the first graduated cylinder, the first air-breathing sebific duct, the first air-breathing ball and level meter, the lower end of described the first graduated cylinder is connected in the tank, level meter is connected to a side of the first graduated cylinder, one end of described the first air-breathing sebific duct is connected to the upper end of the first graduated cylinder, the other end of the first air-breathing sebific duct connects the first air-breathing ball, and one of them of described first and second exhaust hose connects the lower end of the first graduated cylinder.
3. but the coal seam outburst-prevention gas content testing device of underground survey according to claim 2, it is characterized in that, described down-hole desorption instrument also comprises the second graduated cylinder, the second air-breathing sebific duct and the second air-breathing ball, the lower end of described the second graduated cylinder is connected in the tank, the second graduated cylinder and first be arranged in parallel, and level meter is connected to first, between two graduated cylinders, one end of described the second air-breathing sebific duct is connected to the upper end of the second graduated cylinder, the other end of the second air-breathing sebific duct connects the second air-breathing ball, described first, one of them of two exhaust hoses connects respectively the lower end of the first graduated cylinder or the second graduated cylinder.
4. but the coal seam outburst-prevention gas content testing device of underground survey according to claim 3, it is characterized in that, the below of described the first air-breathing sebific duct is connected on the first graduated cylinder by the first spring clamp, and the below of described the second air-breathing sebific duct is connected on the second graduated cylinder by the second spring clamp.
5. but the coal seam outburst-prevention gas content testing device of underground survey according to claim 2 is characterized in that, also comprises thermometer on the desorption instrument of described down-hole, and thermometer is plugged in the described tank, and is positioned at a side of described the first graduated cylinder; The bottom of down-hole desorption instrument also is provided with discharge orifice in the position of the bottom of tank.
6. but the coal seam outburst-prevention gas content testing device of underground survey according to claim 3, it is characterized in that, described the first exhaust hose comprises the first U-shaped pipe, one end of the first U-shaped pipe is connected to the first exhaust hose away from an end of described coal sample cylinder, the other end of the first U-shaped pipe inserts in described the first graduated cylinder or the second graduated cylinder, and the first exhaust hose is connected with the 3rd spring clamp near the end of the first U-shaped pipe;
Described the second exhaust hose comprises the second U-shaped pipe, one end of the second U-shaped pipe is connected to the second exhaust hose away from an end of described comminutor, the other end of the second U-shaped pipe inserts in described the first graduated cylinder or the second graduated cylinder, and the second exhaust hose is connected with the 4th spring clamp near the end of the second U-shaped pipe.
7. but the coal seam outburst-prevention gas content testing device of underground survey according to claim 3 is characterized in that, described the second exhaust hose connects the rubber plug of described material alms bowl body by piercing needle.
8. but the coal seam outburst-prevention gas content testing device of underground survey according to claim 7, it is characterized in that, described comminutor also comprises source of the gas provisioning component and comminutor assembly, the source of the gas provisioning component connects the comminutor assembly via tracheae, described comminutor assembly comprises air motor, eccentric block, described material alms bowl body, impact ring, impact block and swing case, described air motor connects eccentric block, swing the top that case is installed in eccentric block, swing in the case and be placed with dismountable material alms bowl body, be placed with in the material alms bowl body and impact ring, impact in the ring being placed with impact block, the top of material alms bowl body has material alms bowl lid, and the material alms bowl covers has described rubber plug.
9. but the coal seam outburst-prevention gas content testing device of underground survey according to claim 8 is characterized in that, described comminutor assembly also comprises panel, the first spring, the second spring, pallet and supporting leg; Panel is connected with the pallet upside by the first spring, and pallet is fixedly connected with the bottom that swings case by the second spring, and three adjustable legs are fixedly connected on the pallet downside.
10. but the coal seam outburst-prevention gas content testing device of underground survey according to claim 8, it is characterized in that, described source of the gas provisioning component is comprised of rapid-acting coupling, ball valve and pneumatic triple piece, ball valve is connected with the air intake opening of pneumatic triple piece, rapid-acting coupling is connected with the air intake opening of ball valve, and the gas outlet of pneumatic triple piece links to each other with the air intake opening of described air motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220569771 CN202916270U (en) | 2012-10-31 | 2012-10-31 | Coal bed outburst-prevention gas content measuring device capable of performing underground measurement |
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|---|---|---|---|
| CN 201220569771 CN202916270U (en) | 2012-10-31 | 2012-10-31 | Coal bed outburst-prevention gas content measuring device capable of performing underground measurement |
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| CN 201220569771 Expired - Fee Related CN202916270U (en) | 2012-10-31 | 2012-10-31 | Coal bed outburst-prevention gas content measuring device capable of performing underground measurement |
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| CN (1) | CN202916270U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880543A (en) * | 2015-06-16 | 2015-09-02 | 西安科技大学 | Experiment device and method for underground coal mine CO source mechanism and disappearing mechanism research |
| CN108169450A (en) * | 2017-12-18 | 2018-06-15 | 辽宁工程技术大学 | A kind of gas bearing capacity measuring device of low air permeability coal seam |
| CN108318375A (en) * | 2018-04-08 | 2018-07-24 | 河南理工大学 | Circulating desorption of mash gas device and its assay method |
| CN110542623A (en) * | 2019-09-24 | 2019-12-06 | 中国矿业大学 | Automatic measuring device and method for gas content of coal seam in coal mine |
| CN111337380A (en) * | 2020-04-16 | 2020-06-26 | 重庆工程职业技术学院 | Coal sample gas analysis volume measuring device |
| CN112324487A (en) * | 2020-10-20 | 2021-02-05 | 中煤科工集团重庆研究院有限公司 | Double-index evaluation method for outburst prevention effect of coal roadway strip |
| CN112414893A (en) * | 2020-10-21 | 2021-02-26 | 河南理工大学 | Portable gas desorption instrument for underground coal mine and testing method thereof |
| CN113063621A (en) * | 2021-02-26 | 2021-07-02 | 中国地质大学（北京） | Coal reservoir coring and gas content measurement simulation device and working method thereof |
| CN113655197A (en) * | 2021-08-06 | 2021-11-16 | 新疆大学 | Device for measuring content of hydrogen sulfide in coal bed |
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2012
- 2012-10-31 CN CN 201220569771 patent/CN202916270U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880543A (en) * | 2015-06-16 | 2015-09-02 | 西安科技大学 | Experiment device and method for underground coal mine CO source mechanism and disappearing mechanism research |
| CN108169450A (en) * | 2017-12-18 | 2018-06-15 | 辽宁工程技术大学 | A kind of gas bearing capacity measuring device of low air permeability coal seam |
| CN108318375A (en) * | 2018-04-08 | 2018-07-24 | 河南理工大学 | Circulating desorption of mash gas device and its assay method |
| CN108318375B (en) * | 2018-04-08 | 2023-09-19 | 河南理工大学 | Circulating gas desorption device and measuring method thereof |
| CN110542623A (en) * | 2019-09-24 | 2019-12-06 | 中国矿业大学 | Automatic measuring device and method for gas content of coal seam in coal mine |
| CN111337380A (en) * | 2020-04-16 | 2020-06-26 | 重庆工程职业技术学院 | Coal sample gas analysis volume measuring device |
| CN112324487B (en) * | 2020-10-20 | 2022-08-26 | 中煤科工集团重庆研究院有限公司 | Double-index evaluation method for outburst prevention effect of coal roadway strip |
| CN112324487A (en) * | 2020-10-20 | 2021-02-05 | 中煤科工集团重庆研究院有限公司 | Double-index evaluation method for outburst prevention effect of coal roadway strip |
| CN112414893A (en) * | 2020-10-21 | 2021-02-26 | 河南理工大学 | Portable gas desorption instrument for underground coal mine and testing method thereof |
| CN112414893B (en) * | 2020-10-21 | 2023-10-24 | 河南理工大学 | Portable gas desorption instrument for underground coal mine and testing method thereof |
| CN113063621B (en) * | 2021-02-26 | 2022-05-17 | 中国地质大学（北京） | Coal reservoir coring and gas content measurement simulation device and working method thereof |
| CN113063621A (en) * | 2021-02-26 | 2021-07-02 | 中国地质大学（北京） | Coal reservoir coring and gas content measurement simulation device and working method thereof |
| CN113655197A (en) * | 2021-08-06 | 2021-11-16 | 新疆大学 | Device for measuring content of hydrogen sulfide in coal bed |
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