CN108120656A - Measure coal body absorption and the system and method for desorption coal bed gas process temperature and heat - Google Patents
Measure coal body absorption and the system and method for desorption coal bed gas process temperature and heat Download PDFInfo
- Publication number
- CN108120656A CN108120656A CN201711380991.0A CN201711380991A CN108120656A CN 108120656 A CN108120656 A CN 108120656A CN 201711380991 A CN201711380991 A CN 201711380991A CN 108120656 A CN108120656 A CN 108120656A
- Authority
- CN
- China
- Prior art keywords
- fiber
- temperature
- coal
- heat
- desorption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
- G01K11/3206—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Coal body absorption and the system and method for desorption coal bed gas process temperature and heat are measured, belongs to Coal-seam Gas Recovery Technologies field.The measurement coal body absorption and the system of desorption coal bed gas process temperature and heat include：Triaxial pressure chamber, triaxial stress loading device, temperature-detecting device, gas measuring equipment and data processing equipment, triaxial pressure chamber includes the first cavity and the second cavity, first cavity is located on the second cavity, seaming chuck and push-down head are equipped in first cavity, one end of coal sample is fixed on seaming chuck, and the other end is fixed on push-down head；Triaxial stress loading device includes oil cylinder, oil pump, multiple-way valve and gas gas cylinder；Temperature-detecting device includes wideband light source, fiber coupler, fiber Bragg grating sensor array and fiber demodulator；Gas measurement device includes graduated cylinder；Data processing equipment includes microcontroller and display.The system can simulate absorption and the desorption process of coal bed gas, and heat of adsorption and heat of desorption are measured.
Description
Technical field
The present invention relates to Coal-seam Gas Recovery Technologies field, more particularly to a kind of measurement coal body absorption and desorption coal bed gas process
The system and method for temperature and heat.
Background technology
China's coal bed gas rich reserves, main component are methane, since China's coal bed gas has the spy of " height storage is hypotonic "
Point, therefore most of coal bed gas mining area is low permeability reservoir, exploitation is difficult, and the volume increase seepage flow of low permeability reservoir coal bed gas is to energy
The alleviation of source crisis, the prevention of mine gas disaster accident and the protection of atmospheric environment have positive meaning.
Theoretical and experimental study shows that by injecting heat to hyposmosis coal seam reservoirs coal seam reservoirs permeance property can be improved
With coal bed gas desorption quantity and desorption rate, so as to fulfill the purpose of low permeability reservoir coal-bed-gas production-increase anatonosis, and coal bed gas heat injection
Exploitation is based on this principle, and enough attention are obtained in engineering.Heat injection is exploited relatively other Coal-seam Gas Recovery Technologies and is come
Say, heating exploitation have many advantages, such as environment influence it is small, suitable for a variety of different storage characteristics, thus it is necessary to heat injection was exploited
The factors such as energy production efficiency and economy in journey do further evaluation should to obtain the business of heating exploitation coal seam gas method
With and promote.Wherein, coal body can adsorb coal bed gas gas, also coal bed gas gas can be desorbed, desorption is coal
Coal bed gas in body is changed into the process of free state gas by ADSORPTION STATE, and coal body is in absorption coal bed gas or the mistake of desorption coal bed gas
The variation of heat can be generated in journey, is referred to as heat of adsorption and heat of desorption, and heat of adsorption and heat of desorption exploit skill for heat injection
The research migrated on a variety of media after heat injection coal body in art is particularly important, therefore heat of adsorption and the measure of heat of desorption are to note
The foundation of energy production efficiency and Economic Evaluation system in hot recovery process plays an important role.
At present mostly using indirect method in heat of adsorption and the measure of heat of desorption, i.e., by Clausius-Clapeyron equations,
The heat of adsorption of adsorbent under constant coverage is calculated using the adsorption isotherm measured under two different temperatures, and based on absorption
It desorbs as this principle of mutual inverse process, heat of adsorption reconciliation approximate instead of heat of desorption with heat of adsorption, however that indirect method is used to obtain
Heat absorption assumed condition during calculating is perfect condition, is had significantly with the true heat of adsorption and heat of desorption of actual coal body
Difference, therefore cause the heat of adsorption reconciliation change of heat absorption rule of the data substantial deviation reality measured using indirect method.
The content of the invention
Existing in the prior art in order to solve the problems, such as, on the one hand the present invention provides a kind of measurement coal body absorption and desorption coals
The system of layer gas process temperature and heat, the measurement coal body absorption and the system bag of desorption coal bed gas process temperature and heat
It includes：Triaxial pressure chamber, triaxial stress loading device, temperature-detecting device, gas measuring equipment and data processing equipment；
Triaxial pressure chamber includes the first cavity and the second cavity, and the first cavity is located on the second cavity, in the first cavity
Equipped with seaming chuck and push-down head, seaming chuck is fixed at the top of the first cavity, and one end of coal sample is fixed on seaming chuck, and the other end is solid
It is scheduled on push-down head, axis pressure head is located in the second cavity, and one end of axis pressure head is stretched into the first cavity and is connected with push-down head, coal
Thermoplastic set is cased with outside sample, seaming chuck and push-down head；
Triaxial stress loading device includes oil cylinder, oil pump, multiple-way valve and gas gas cylinder, oil cylinder and is connected with oil pump, oil
Pump connect with multiple-way valve, and equipped with confining pressure hole, a valve of confining pressure hole and multiple-way valve is connected by the first pipeline at the first cavity top
It connects；Second cavity bottom is equipped with axis and presses hole, and axis presses another valve of hole and multiple-way valve to be connected by the second pipeline；On seaming chuck
Equipped with air admission hole, air admission hole extends to the end face that seaming chuck is contacted with coal sample, air admission hole and gas gas cylinder in seaming chuck
It is connected by the 3rd pipeline, the 3rd pipeline is equipped with intake valve and septum valve；
Temperature-detecting device includes wideband light source, fiber coupler, fiber Bragg grating sensor array and optical fiber solution
Device is adjusted, sensor mounting hole is equipped in coal sample, fiber Bragg grating sensor array is mounted in sensor mounting hole, optical fiber
Coupler is connected by optical fiber with each fiber Bragg grating sensor in fiber Bragg grating sensor array, each
The position of the test point of fiber Bragg grating sensor is different, and wideband light source is connected with fiber coupler by optical fiber, light
Fine coupler is connected with fiber demodulator by optical fiber；
Gas measurement device includes graduated cylinder, and push-down head is equipped with the first venthole, and axis pressure head is equipped with the second venthole, the
One venthole, the second venthole and graduated cylinder are connected by the 4th pipeline, and the 4th pipeline is equipped with air outlet valve；
Data processing equipment includes microcontroller and display, and microcontroller is connected by data cable with fiber demodulator, shows
Device is connected with microcontroller by data cable.
The triaxial pressure chamber includes upper cap, sleeve, baffle ring and lower cover cap, and upper cap is sleeved on one end of sleeve, sleeve
The other end be stuck in lower cover cap, baffle ring be stuck in the lower cover cap and with the end contact of the sleeve, the seaming chuck card
In upper cap, axis pressure head is connected through baffle ring with the push-down head, upper cap, sleeve, the seaming chuck, the axis pressure head and
Baffle ring forms first cavity, and baffle ring, the axis pressure head and lower cover cap form second cavity.
The confining pressure hole is arranged in the upper cap, and the axis pressure hole is arranged on the lower cover cap.
It is set in the coal sample there are one the sensor mounting hole, each light in fiber Bragg grating sensor array
Fine Bragg grating sensor is installed in the sensor mounting hole, and the detection of each fiber Bragg grating sensor
Point is located at the different position in sensor mounting hole.
The coal sample is equipped with multiple sensor mounting hole, each light in fiber Bragg grating sensor array
Fine Bragg grating sensor corresponds to a sensor mounting hole, and each fiber Bragg grating sensor is mounted on and it
In corresponding sensor mounting hole, and the position of the test point of the fiber Bragg grating sensor in each sensor mounting hole
It is different.
The fiber Bragg grating sensor array is fastened on by encapsulating in the sensor mounting hole.
Pressure gauge is additionally provided on 3rd pipeline.
The multiple-way valve is also connected with air bag voltage-stablizer.
It is set on first pipeline there are one pressure gauge, sets that there are one pressure gauges on second pipeline.
On the other hand, the present invention provides a kind of using the measurement coal body absorption and desorption coal bed gas process temperature and heat
Temperature and the method for heat during the systematic survey coal body absorption of amount and desorption coal bed gas：The described method includes：
Step 1 opens the oil pump and the multiple-way valve, and hydraulic pressure is passed through into first cavity by the confining pressure hole
Oil carries out confining pressure loading, by the axis hole is pressed to apply hydraulic oil into second cavity, the in vivo hydraulic oil of the second chamber to
It is upper to squeeze the axis pressure head, the seaming chuck and the push-down head is made to squeeze the coal sample, carries out axis pressure loading；
Step 2, reach setting confining pressure and axis pressure after, close the multiple-way valve and the oil pump, open the intake valve and
The septum valve, high pressure gas gas are applied to the coal sample by the air admission hole, carry out pore pressure loading, described
Coal sample adsorbs high pressure gas gas under the Pore Pressure, while pore pressure is applied, described in opening
Wideband light source, the optical signal that wideband light source is sent is through the fiber coupler point to each fiber Bragg grating sensor
It is interior；
Step 3, in adsorption process, the temperature of the coal sample changes, each optical fiber Bragg grating sensing
Device detects the temperature of the coal sample and generates temperature change optical signal in real time, and temperature change optical signal is reflected to the light
Fine coupler, the fiber coupler couple the temperature change optical signal that each fiber Bragg grating sensor reflects
The fiber demodulator is given into optical signal back reflection all the way；
Step 4, the optical fiber adjuster (22) are passed according to each Fiber Bragg Grating FBG of optical signal real-time tracking of reception
The fiber grating resonance spectrum of sensor carries out full spectrum to the fiber grating resonance spectrum of each fiber Bragg grating sensor
Scanning and data acquisition, fiber grating spectrum change caused by analysis temperature obtain each fiber Bragg grating sensor
Absolute resonance spectrum peak wavelength, further according to resonance spectrum peak wavelength and the linear corresponding relation of temperature, obtains each optical fiber
The temperature value T that Bragg grating sensor measures1, T2, T3... Tn, n is the quantity of test point；
The temperature value T that step 5, the fiber demodulator measure each fiber Bragg grating sensor1To TnIt is sent to
The microcontroller, microcontroller measure n group temperature values to a certain moment j of adsorption process and arithmetic average are taken to be worth to the moment coal sample
Mean temperature Tj,The knots modification Δ T of the mean temperature of coal sample between two instantaneous moments j and j+1 is calculated againj,
ΔTj=Tj+1-Tj, according to formula Δ Qj=CM Δs TjIt obtains under condition of triaxial stress, the transient state of coal bed gas adsorption process is micro-
Divide absorption heat Δ Qj, C is the specific heat capacity of the coal sample, and M is the quality of the coal sample, then to all transient state differential heat of adsorption amounts
ΔQjSummation obtains the heat of adsorption Q of whole process, and by the display screen by the mean temperature T of corresponding coal sample of each momentj
And the heat of adsorption Q of entire adsorption process shows that heat of adsorption is measured；
Step 6 closes the intake valve, opens the air outlet valve, and pore pressure carries out moment pressure release, and the coal sample starts
Coal bed gas is desorbed, in desorption process, the temperature of the coal sample changes, and each fiber Bragg grating sensor is equal
The temperature of the coal sample is detected in real time and generates temperature change optical signal, and temperature change optical signal is reflected to the optical fiber coupling
The temperature change optical signal that each fiber Bragg grating sensor reflects is coupled into one by clutch, the fiber coupler
Road optical signal back reflection gives the fiber demodulator；
Step 7, the fiber demodulator are according to each fiber Bragg grating sensor of optical signal real-time tracking of reception
Fiber grating resonance spectrum, full spectral scan is carried out to the fiber grating resonance spectrum of each fiber Bragg grating sensor
And data acquisition, fiber grating spectrum change caused by analysis temperature obtain the absolute of each fiber Bragg grating sensor
Resonance spectrum peak wavelength further according to resonance spectrum peak wavelength and the linear corresponding relation of temperature, obtains each optical fiber Bradley
The temperature value T that lattice grating sensor measures1', T2', T3' ... Tn', n is the quantity of test point；
The temperature value T that step 8, the fiber demodulator measure each fiber Bragg grating sensor1' to Tn' send
To the microcontroller, microcontroller measures n group temperature values to a certain moment j of desorption process and arithmetic average is taken to be worth to the moment
The mean temperature T of coal samplej',The knots modification of the mean temperature of coal sample between two instantaneous moments j and j+1 is calculated again
ΔTj', Δ Tj'=Tj+1'-Tj', according to formula Δ Qj'=CM Δs Tj' obtain under condition of triaxial stress, coal bed gas was adsorbed
The transient state differential desorption heat Δ Q of journeyj', C is the specific heat capacity of the coal sample, and M is the quality of the coal sample, then to all transient states
Differential desorption heat Δ Qj' summation obtain the heat of desorption Q' of entire desorption process, and pass through the display screen will be in desorption process
The mean temperature T of each moment corresponding coal samplej' and entirely the heat of desorption Q' of desorption process is shown, desorbs thermal measurement
It completes.
The absorption of measurement coal body and the system of desorption coal bed gas process temperature and heat in the present invention can simulate really
The absorption of coal bed gas and desorption process in the case of stress possess triaxial stress loading function, simulate in real process confining pressure,
In the case that axis is pressed with pore pressure, absorption and desorption of the coal body to coal bed gas, while can directly and accurately measure
Temperature and thermal change of the coal body in absorption and desorption process, compared in the prior art using round-about way measurement
As a result for, greatly reduce with the true heat of adsorption of actual coal body and the difference of heat of desorption, be coal-bed gas heat injection volume increase skill
The evaluation of art heat-economy and optimization of process schemes and business promotion application provide strong technical data and technical support, this hair
It is bright that longitudinal multimetering can be carried out to coal sample so that measured value is more accurate, while simple and compact for structure, dependable performance, behaviour
Facilitate, it is of low cost.
Description of the drawings
Fig. 1 is that measurement coal body provided by the invention adsorbs and the structure of the system of desorption coal bed gas process temperature and heat is shown
It is intended to；
Fig. 2 is the structure diagram of triaxial pressure chamber provided by the invention；
Fig. 3 is fiber Bragg grating sensor array when a sensor mounting hole is set in coal sample provided by the invention
Test point distribution map.
Wherein,
1 first cavity, 2 second cavitys, 3 seaming chucks, 4 push-down heads, 5 coal samples, 6 axis pressure heads, 7 oil cylinders, 8 oil pumps lead to more 9
Valve, 10 gas gas cylinders, 11 confining pressure holes, 12 first pipelines, 13 axis pressure hole, 14 second pipelines, 15 air admission holes, 16 the 3rd pipes
Road, 17 intake valves, 18 septum valves, 19 wideband light sources, 20 fiber couplers, 21 fiber Bragg grating sensor arrays,
22 fiber demodulators, 23 graduated cylinders, 24 first ventholes, 25 second ventholes, 26 the 4th pipelines, 27 air outlet valves, 28 microcontrollers, 29
Display, 30 upper caps, 31 sleeves, 32 baffle rings, 33 lower cover caps, 34 pressure gauges, 35 pressure gauges, 36 pressure gauges, 37 air bag voltage stabilizings
Device, 38 optic fibre holes.
Specific embodiment
In order to solve it is existing in the prior art can only heat of adsorption and heat of desorption be measured by indirect method, it is true with actual coal body
Real heat of adsorption and heat of desorption have the problem of notable difference, and as shown in Figure 1 to Figure 3, the present invention provides a kind of measurement coal body absorption
With the system of desorption coal bed gas process temperature and heat, measurement coal body absorption and desorption coal bed gas process temperature and heat are
System includes：Triaxial pressure chamber, triaxial stress loading device, temperature-detecting device, gas measuring equipment and data processing equipment；
Triaxial pressure chamber includes the first cavity 1 and the second cavity 2, and the first cavity 1 is located on the second cavity 2, the first chamber
Seaming chuck 3 and push-down head 4 are equipped in body 1, seaming chuck 3 is fixed on 1 top of the first cavity, and one end of coal sample 5 is fixed on seaming chuck 3
On, the other end is fixed on push-down head 4, and axis pressure head 6 is located in the second cavity 2, and the first cavity 1 is stretched into one end of axis pressure head 6
It is connected with push-down head 4, thermoplastic set is cased with outside coal sample 5, seaming chuck 3 and push-down head 4；
Specifically, triaxial pressure chamber includes upper cap 30, sleeve 31, baffle ring 32 and lower cover cap 33, and upper cap 30 is sleeved on
One end of cylinder 31, the other end of sleeve 31 is stuck in lower cover cap 33, baffle ring 32 be stuck in lower cover cap 33 and with the end face of sleeve 31
Contact, seaming chuck 3 is stuck in upper cap 30, and axis pressure head 6 is connected through baffle ring 32 with push-down head 4, upper cap 30, sleeve 31, on
Pressure head 3, axis pressure head 6 and baffle ring 32 form the first cavity 1, and baffle ring 32, axis pressure head 6 and lower cover cap 33 form the second cavity 2；
Wherein, the shape of the cross section of seaming chuck 3 and push-down head 4 can be circular or rectangle, can be according to tested coal
The shape of sample 5 is rationally set,
Triaxial stress loading device includes oil cylinder 7, oil pump 8, multiple-way valve 9 and gas gas cylinder 10, oil cylinder 7 and oil pump 8
Connection, oil pump 8 and multiple-way valve 9 connect, and 1 top of the first cavity is equipped with confining pressure hole 11, and specifically, confining pressure hole 11 is arranged on upper cap
On 30, confining pressure hole 11 is connected with a valve of multiple-way valve 9 by the first pipeline 12, is set on the first pipeline 12 there are one pressure gauge
35；Second cavity, 2 bottom is equipped with axis and presses hole 13, and specifically, axis pressure hole 13 is arranged on lower cover cap 33, axis pressure hole 13 and multiple-way valve
9 another valve is connected by the second pipeline 14, and multiple-way valve 9 is also connected with air bag voltage-stablizer 37, and the second pipeline 14 is equipped with
One pressure gauge 36；Seaming chuck 3 is equipped with air admission hole 15, and air admission hole 15 extends to seaming chuck 3 in seaming chuck 3 and connect with coal sample 5
Tactile end face, air admission hole 15 are connected with gas gas cylinder 10 by the 3rd pipeline 16, and the 3rd pipeline 16 is equipped with pressure gauge 34,
Intake valve 17 and septum valve 18 are additionally provided on 3rd pipeline 16；
Temperature-detecting device includes wideband light source 19, fiber coupler 20,21 and of fiber Bragg grating sensor array
Fiber demodulator 22, wherein, fiber Bragg grating sensor array 21 includes multiple Fiber Bragg Grating FBG (Fibber
Bragg Grating) sensor, coal sample 5 is interior to be equipped with sensor mounting hole, and fiber Bragg grating sensor array 21 is mounted on
In sensor mounting hole, fiber coupler 20 passes through each optical fiber cloth in optical fiber and fiber Bragg grating sensor array 21
Glug grating sensor connects, and the position of the test point of each fiber Bragg grating sensor is different, for detecting coal sample 5
Temperature at interior different position, wideband light source 19 are connected with fiber coupler 20 by optical fiber, fiber coupler 20 and optical fiber solution
Device 22 is adjusted to be connected by optical fiber；
Wherein it is possible to one or more sensors mounting hole is set in coal sample 5 according to actual conditions, for small volume
Coal sample 5, a sensor mounting hole can be set in the coal sample 5, it is each in fiber Bragg grating sensor array 21
Fiber Bragg grating sensor is installed in this sensor mounting hole, and each fiber Bragg grating sensor
Test point is located at the different position in sensor mounting hole, for detecting the temperature at 5 different position of coal sample；
For the big coal sample 5 that volume is larger, multiple sensor mounting hole, multiple sensor peaces can be set in coal sample 5
Dress hole is distributed in coal sample 5, and each fiber Bragg grating sensor in fiber Bragg grating sensor array 21 corresponds to
One sensor mounting hole, each fiber Bragg grating sensor are mounted in corresponding sensor mounting hole, and every
The position of the test point of fiber Bragg grating sensor in a sensor mounting hole is different；
Wherein, the sensor mounting hole in coal sample 5 shown in Fig. 1 and Fig. 3 is longitudinally disposed, and Fiber Bragg Grating FBG passes
Sensor array 21 is longitudinally mounted in coal sample 5, each fiber Bragg grating sensor detection 5 different height of coal sample in array
The temperature at place；Alternatively, in the present invention, one or more sensors mounting hole, optical fiber cloth can also be laterally set in coal sample 5
Glug grating sensor array 21 is transversely mounted in coal sample 5, each fiber Bragg grating sensor detection coal in array
The temperature at different position in the horizontal direction of sample 5；Alternatively, in the present invention, multiple sensors can also be set in coal sample 5
Mounting hole, some in multiple sensor mounting hole are longitudinally disposed, some are laterally set, some angled inclination arrangements, often
Temperature at a fiber Bragg grating sensor detection 5 different position of coal sample.
The fiber Bragg grating sensor of fiber Bragg grating sensor array 21 can be fixed on biography by encapsulating
In sensor mounting hole, an optic fibre hole 38 on seaming chuck 3 is set, fiber Bragg grating sensor array 21 is made to pass through optical fiber
Hole 38 is fixed in the sensor mounting hole of coal sample 5.
Gas measurement device includes graduated cylinder 23, is set on push-down head 4 there are one venthole, for the first venthole 24, axis pressure head 6
On set there are one venthole, be the second venthole 25, the first venthole 24, the second venthole 25 and graduated cylinder 23 pass through the 4th pipeline
26 connections, the 4th pipeline 26 are equipped with air outlet valve 27, wherein, the first pipeline 12, the second pipeline 14, the 3rd pipeline 16 and the 4th pipe
It road 26 all can be steel pipe；
Data processing equipment includes microcontroller 28 and display 29, and microcontroller 28 is connected by data cable and fiber demodulator 22
It connects, display 29 is connected with microcontroller 28 by data cable.
Included such as using temperature during the systematic survey coal body absorption in the present invention or desorption of methane and the method for heat
Lower step：
Step 1 opens oil pump 8 and multiple-way valve 9, and hydraulic oil is passed through into the first cavity 1 by confining pressure hole 11, carries out confining pressure
Loading presses hole 13 to apply hydraulic oil into the second cavity 2 by axis, the upward axis pressure head 6 of hydraulic oil in the second cavity 2,
Seaming chuck 3 and push-down head 4 is made to squeeze coal sample 5, carries out axis pressure loading；
Wherein, the oil in oil cylinder 7 is pumped into the first pipeline 12 and the second pipeline 14, hydraulic pressure by oil pump 8 respectively by multiple-way valve 9
Oil is entered by the first pipeline 12 in the first cavity 1, and pressure gauge 25 measures the size of confining pressure, applies confining pressure, hydraulic oil to coal sample 5
By the second pipeline 14 into extruding axis pressure head 6 in the second cavity 2, apply axis pressure to coal sample 5, pressure gauge 36 measures the big of axis pressure
It is small, wherein, multiple-way valve 9 can be six-way valve.
Step 2 after reaching setting confining pressure and axis pressure, closes multiple-way valve 9 and oil pump 8, can after closing multiple-way valve 9 and oil pump 8
To open the valve of air bag voltage-stablizer 37, air bag voltage-stablizer 37 can carry out pressure stability to confining pressure and axis pressure, open intake valve
17 and septum valve 18, high pressure gas gas is applied to coal sample 5 by the 3rd pipeline 16 and air admission hole 15, carries out pore pressure
Loading, septum valve 18 can adjust admission pressure, and pore pressure is made to reach setting value, and pressure gauge 34 is used to measure Pore Pressure
The size of power, coal sample 5 adsorb high pressure gas gas under Pore Pressure, ingredient and coal in high pressure gas gas
The ingredient of layer gas is almost identical, and therefore, high pressure gas gas can be used for simulating coal bed gas, wherein, thermoplastic set can be by coal sample 5
Sealing, prevents hydraulic oil from entering inside coal sample 5, influences the mechanical property and adsorption effect of coal sample 5, thermoplastic set can while will be upper
Pressure head 3 and push-down head 4 encase simultaneously, in order to ensure leakproofness, can cover outer fixed seal ring in thermoplastic；
While pore pressure is applied, wideband light source 19 is opened, the optical signal that wideband light source 19 is sent is through fiber coupling
Device 20 divides to each fiber Bragg grating sensor；
Step 3, the process of pore pressure loading are adsorption process, and adsorption process is exothermic process, therefore is being adsorbed
The temperature of coal sample 5 can change in journey, and each fiber Bragg grating sensor detects temperature and the generation of coal sample 5 in real time
Temperature change optical signal, can since the position of test point of each fiber Bragg grating sensor in coal sample 5 is different
To detect the temperature change optical signal in coal sample 5 at different position, each fiber Bragg grating sensor becomes temperature
Change optical signal and be reflected to fiber coupler 20, the temperature that fiber coupler 20 reflects each fiber Bragg grating sensor becomes
Change optical signal be coupled into all the way optical signal back reflection to fiber demodulator 22；
Step 4, fiber demodulator 22 are according to each fiber Bragg grating sensor of optical signal real-time tracking of reception
Fiber grating resonance spectrum, the fiber grating resonance spectrum of each fiber Bragg grating sensor is carried out full spectral scan and
Data acquisition, fiber grating spectrum change caused by analysis temperature obtain the definitely common of each fiber Bragg grating sensor
Vibrational spectrum peak wavelength further according to resonance spectrum peak wavelength and the linear corresponding relation of temperature, obtains each optical fiber Bragg
The temperature value T that grating sensor measures1, T2, T3... Tn, n is the quantity of test point, wherein, optical fiber adjuster 22 is according to reception
Optical signal to obtain the process of the temperature value that each fiber Bragg grating sensor measures be the prior art；
The temperature value T that step 5, fiber demodulator 22 measure each fiber Bragg grating sensor1To TnIt is sent to list
Piece machine 28, microcontroller 28 measure n group temperature values to a certain moment j of adsorption process and arithmetic average are taken to be worth to the moment coal sample 5
Mean temperature Tj,Wherein, what the mean temperature of the coal sample 5 obtained by the measurement of multi-point temperature enabled to
5 temperature of coal sample is more accurate, compared with accurate using for traditional single-point thermocouple measurement single point temperature, substantially increasing
Property；
Microcontroller 28 calculates the knots modification Δ T of the mean temperature of coal sample 5 between two instantaneous moments j and j+1 againj, Δ Tj=
Tj+1-Tj, according to formula Δ Qj=CM Δs TjIt obtains under condition of triaxial stress, the transient state differential absorption of coal bed gas adsorption process
Heat Δ Qj, wherein, C is the specific heat capacity of coal sample 5, and M is the quality of coal sample 5, then to transient state differential heat of adsorption amount Δ QjSummation obtains
The heat of adsorption Q of whole process, and pass through display screen by the mean temperature T of corresponding coal sample 5 of each momentjAnd it entirely adsorbed
The heat of adsorption Q of journey shows that heat of adsorption is measured；
Step 6 closes intake valve 17, opens air outlet valve 27, and pore pressure carries out moment pressure release, and coal sample 5 starts to desorb coal
Layer gas, the coal bed gas of desorption enter in graduated cylinder 23, the volume of the coal bed gas of desorption can be measured by graduated cylinder 23, in desorption process
In, the temperature of coal sample 5 changes, and each fiber Bragg grating sensor detects the temperature of coal sample 5 and generates temperature in real time
Degree variation optical signal, and temperature change optical signal is reflected to fiber coupler 20, fiber coupler 20 is by each optical fiber Bradley
Lattice grating sensor reflection temperature change optical signal be coupled into all the way optical signal back reflection to fiber demodulator 22；
Step 7, fiber demodulator 22 are according to each fiber Bragg grating sensor of optical signal real-time tracking of reception
Fiber grating resonance spectrum, the fiber grating resonance spectrum of each fiber Bragg grating sensor is carried out full spectral scan and
Data acquisition, fiber grating spectrum change caused by analysis temperature obtain the definitely common of each fiber Bragg grating sensor
Vibrational spectrum peak wavelength further according to resonance spectrum peak wavelength and the linear corresponding relation of temperature, obtains each optical fiber Bragg
The temperature value T that grating sensor measures1', T2', T3' ... Tn', n is the quantity of test point；
The temperature value T that step 8, fiber demodulator 22 measure each fiber Bragg grating sensor1' to Tn' be sent to
Microcontroller 28, microcontroller 28 measure a certain moment j of desorption process the coal that n group temperature values take arithmetic average to be worth to the moment
The mean temperature T of sample 5j',The change of the mean temperature of coal sample 5 between two instantaneous moments j and j+1 is calculated again
Measure Δ Tj', Δ Tj'=Tj+1'-Tj', according to formula Δ Qj'=CM Δs Tj' obtain under condition of triaxial stress, coal bed gas absorption
The transient state differential desorption heat Δ Q of processj', C is the specific heat capacity of coal sample 5, and M is the quality of coal sample 5, then to all transient state differential
Desorb heat Δ Qj' summing obtains the heat of desorption Q' of entire desorption process, and pass through display screen by each moment in desorption process
The mean temperature T of corresponding coal sample 5j' and entirely the heat of desorption Q' of desorption process shows that heat of desorption is measured.
The absorption of measurement coal body and the system of desorption coal bed gas process temperature and heat in the present invention can simulate really
The absorption of coal bed gas and desorption process in the case of stress possess triaxial stress loading function, simulate in real process confining pressure,
In the case that axis is pressed with pore pressure, absorption and desorption of the coal body to coal bed gas, while can directly and accurately measure
Temperature and thermal change of the coal body in absorption and desorption process, compared in the prior art using round-about way measurement
As a result for, greatly reduce with the true heat of adsorption of actual coal body and the difference of heat of desorption, be coal-bed gas heat injection volume increase skill
The evaluation of art heat-economy and optimization of process schemes and business promotion application provide strong technical data and technical support, this hair
It is bright to carry out longitudinal multimetering to coal sample 5 so that measured value is more accurate, while simple and compact for structure, dependable performance, behaviour
Facilitate, it is of low cost.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of measure coal body absorption and the system of desorption coal bed gas process temperature and heat, which is characterized in that the measurement coal
Body adsorbs and the system of desorption coal bed gas process temperature and heat includes：Triaxial pressure chamber, triaxial stress loading device, temperature inspection
Survey device, gas measuring equipment and data processing equipment；
Triaxial pressure chamber includes the first cavity (1) and the second cavity (2), and the first cavity (1) is located on the second cavity (2), the
Seaming chuck (3) and push-down head (4) are equipped in one cavity (1), seaming chuck (3) is fixed at the top of the first cavity (1), coal sample (5)
One end is fixed on seaming chuck (3), and the other end is fixed on push-down head (4), and axis pressure head (6) is located in the second cavity (2), and axis
One end of pressure head (6) is stretched into the first cavity (1) and is connected with push-down head (4), coal sample (5), seaming chuck (3) and push-down head (4) housing
There is thermoplastic set；
Triaxial stress loading device include oil cylinder (7), oil pump (8), multiple-way valve (9) and gas gas cylinder (10), oil cylinder (7) and
Oil pump (8) connects, and oil pump (8) and multiple-way valve (9) connect, and confining pressure hole (11) are equipped at the top of the first cavity (1), confining pressure hole (11) and
One valve of multiple-way valve (9) is connected by the first pipeline (12)；Second cavity (2) bottom is equipped with axis and presses hole (13), axis pressure hole
(13) it is connected with another valve of multiple-way valve (9) by the second pipeline (14)；Seaming chuck (3) is equipped with air admission hole (15), into
Stomata (15) extends to the end face that seaming chuck (3) is contacted with coal sample (5), air admission hole (15) and gas high pressure in seaming chuck (3)
Gas cylinder (10) is connected by the 3rd pipeline (16), and the 3rd pipeline (16) is equipped with intake valve (17) and septum valve (18)；
Temperature-detecting device includes wideband light source (19), fiber coupler (20), fiber Bragg grating sensor array (21)
With fiber demodulator (22), coal sample (5) is interior to be equipped with sensor mounting hole, and fiber Bragg grating sensor array (21) is mounted on
In sensor mounting hole, fiber coupler (20) passes through each light in optical fiber and fiber Bragg grating sensor array (21)
Fine Bragg grating sensor connection, the position of the test point of each fiber Bragg grating sensor is different, wideband light source
(19) it is connected with fiber coupler (20) by optical fiber, fiber coupler (20) is connected with fiber demodulator (22) by optical fiber；
Gas measurement device includes graduated cylinder (23), and push-down head (4) is equipped with the first venthole (24), and axis pressure head (6) is equipped with the
Two ventholes (25), the first venthole (24), the second venthole (25) and graduated cylinder (23) are connected by the 4th pipeline (26), and the 4th
Pipeline (26) is equipped with air outlet valve (27)；
Data processing equipment includes microcontroller (28) and display (29), and microcontroller (28) passes through data cable and fiber demodulator
(22) connect, display (29) is connected with microcontroller (28) by data cable.
2. measurement coal body absorption according to claim 1 and the system of desorption coal bed gas process temperature and heat, feature
It is, the triaxial pressure chamber includes upper cap (30), sleeve (31), baffle ring (32) and lower cover cap (33), upper cap (30) set
In one end of sleeve (31), the other end of sleeve (31) is stuck in lower cover cap (33), and baffle ring (32) is stuck in the lower cover cap (33)
It is interior and with the end contact of the sleeve (31), the seaming chuck (3) is stuck in upper cap (30), and axis pressure head (6) passes through baffle ring
(32) it is connected with the push-down head (4), upper cap (30), sleeve (31), the seaming chuck (3), the axis pressure head (6) and baffle ring
(32) first cavity (1) is formed, baffle ring (32), the axis pressure head (6) and lower cover cap (33) form second cavity
(2)。
3. measurement coal body absorption according to claim 2 and the system of desorption coal bed gas process temperature and heat, feature
It is, the confining pressure hole (11) is arranged in the upper cap (30), and axis pressure hole (13) is arranged on the lower cover cap (33)
On.
4. measurement coal body absorption according to claim 1 and the system of desorption coal bed gas process temperature and heat, feature
It is, sets in the coal sample (5) there are one the sensor mounting hole, it is every in fiber Bragg grating sensor array (21)
A fiber Bragg grating sensor is installed in the sensor mounting hole, and each fiber Bragg grating sensor
Test point is located at the different position in sensor mounting hole.
5. measurement coal body absorption according to claim 1 and the system of desorption coal bed gas process temperature and heat, feature
It is, the coal sample (5) is equipped with multiple sensor mounting hole, every in fiber Bragg grating sensor array (21)
A fiber Bragg grating sensor corresponds to a sensor mounting hole, and each fiber Bragg grating sensor is mounted on
In corresponding sensor mounting hole, and the test point of the fiber Bragg grating sensor in each sensor mounting hole
Position is different.
6. measurement coal body absorption according to claim 1 and the system of desorption coal bed gas process temperature and heat, feature
It is, the fiber Bragg grating sensor array (21) is fastened on by encapsulating in the sensor mounting hole.
7. measurement coal body absorption according to claim 1 and the system of desorption coal bed gas process temperature and heat, feature
It is, pressure gauge (34) is additionally provided on the 3rd pipeline (16).
8. measurement coal body absorption according to claim 1 and the system of desorption coal bed gas process temperature and heat, feature
It is, the multiple-way valve (9) is also connected with air bag voltage-stablizer (37).
9. measurement coal body absorption according to claim 1 and the system of desorption coal bed gas process temperature and heat, feature
It is, is set on first pipeline (12) there are one pressure gauge (35), sets that there are one pressure gauges on second pipeline (14)
(36)。
10. the method adsorbed using systematic survey coal body described in claim 1 and desorb coal bed gas process temperature and heat：Its
It is characterized in that, the described method includes：
Step 1 opens the oil pump (8) and the multiple-way valve (9), by the confining pressure hole (11) to first cavity (1)
Hydraulic oil is inside passed through, carries out confining pressure loading, hydraulic oil is applied into second cavity (2) by axis pressure hole (13), the
The upward axis pressure head (6) of hydraulic oil in two cavitys (2) makes the seaming chuck (3) and the push-down head (4) squeeze institute
Coal sample (5) is stated, carries out axis pressure loading；
Step 2 after reaching setting confining pressure and axis pressure, closes the multiple-way valve (9) and the oil pump (8), opens the intake valve
(17) and the septum valve (18), high pressure gas gas are applied to the coal sample (5) by the air admission hole (15), carry out
Pore pressure loads, and the coal sample (5) adsorbs high pressure gas gas under the Pore Pressure, is applying hole
While pressure, the wideband light source (19) is opened, the optical signal that wideband light source (19) is sent is through the fiber coupler (20)
Divide to each fiber Bragg grating sensor；
Step 3, in adsorption process, the temperature of the coal sample (5) changes, each fiber Bragg grating sensor
The temperature of the coal sample (5) is detected in real time and generates temperature change optical signal, and temperature change optical signal is reflected to described
Fiber coupler (20), the temperature change that the fiber coupler (20) reflects each fiber Bragg grating sensor
Optical signal be coupled into all the way optical signal back reflection give the fiber demodulator (22)；
Step 4, the optical fiber adjuster (22) are according to each fiber Bragg grating sensor of optical signal real-time tracking of reception
Fiber grating resonance spectrum, full spectral scan is carried out to the fiber grating resonance spectrum of each fiber Bragg grating sensor
And data acquisition, fiber grating spectrum change caused by analysis temperature obtain the absolute of each fiber Bragg grating sensor
Resonance spectrum peak wavelength further according to resonance spectrum peak wavelength and the linear corresponding relation of temperature, obtains each optical fiber Bradley
The temperature value T that lattice grating sensor measures1, T2, T3... Tn, n is the quantity of test point；
The temperature value T that step 5, the fiber demodulator (22) measure each fiber Bragg grating sensor1To TnIt is sent to
The microcontroller (28), microcontroller (28) measure n group temperature values to a certain moment j of adsorption process and arithmetic average are taken to be worth to this
The mean temperature T of moment coal sample (5)j,The mean temperature of coal sample (5) between two instantaneous moments j and j+1 is calculated again
Knots modification Δ Tj, Δ Tj=Tj+1-Tj, according to formula Δ Qj=CM Δs TjIt obtains under condition of triaxial stress, coal bed gas absorption
The transient state differential heat of adsorption amount Δ Q of processj, C is the specific heat capacity of the coal sample (5), and M is the quality of the coal sample (5), then to institute
There is transient state differential heat of adsorption amount Δ QjSummation obtains the heat of adsorption Q of whole process, and passes through the display screen by each moment pair
The mean temperature T for the coal sample (5) answeredjAnd the heat of adsorption Q of entire adsorption process shows that heat of adsorption is measured；
Step 6 closes the intake valve (17), opens the air outlet valve (27), and pore pressure carries out moment pressure release, the coal sample
(5) start to desorb coal bed gas, in desorption process, the temperature of the coal sample (5) changes, each optical fiber Bragg light
Gate sensor detects the temperature of the coal sample (5) and generates temperature change optical signal in real time, and temperature change optical signal is anti-
It penetrates and gives the fiber coupler (20), the fiber coupler (20) reflects each fiber Bragg grating sensor
Temperature change optical signal be coupled into all the way optical signal back reflection give the fiber demodulator (22)；
Step 7, the fiber demodulator (22) are according to each fiber Bragg grating sensor of optical signal real-time tracking of reception
Fiber grating resonance spectrum, full spectral scan is carried out to the fiber grating resonance spectrum of each fiber Bragg grating sensor
And data acquisition, fiber grating spectrum change caused by analysis temperature obtain the absolute of each fiber Bragg grating sensor
Resonance spectrum peak wavelength further according to resonance spectrum peak wavelength and the linear corresponding relation of temperature, obtains each optical fiber Bradley
The temperature value T that lattice grating sensor measures1', T2', T3' ... Tn', n is the quantity of test point；
The temperature value T that step 8, the fiber demodulator (22) measure each fiber Bragg grating sensor1' to Tn' send
The microcontroller (28) is given, microcontroller (28) measures n group temperature values to a certain moment j of desorption process and arithmetic average is taken to be worth to
The mean temperature T of the coal sample (5) at the momentj',The flat of coal sample (5) between two instantaneous moments j and j+1 is calculated again
The knots modification Δ T of equal temperaturej', Δ Tj'=Tj+1'-Tj', according to formula Δ Qj'=CM Δs Tj' obtain condition of triaxial stress
Under, the transient state differential desorption heat Δ Q of coal bed gas adsorption processj', C is the specific heat capacity of the coal sample (5), and M is the coal sample
(5) quality, then to all transient state differential desorption heat Δ Qj' summing obtains the heat of desorption Q' of entire desorption process, and pass through
The display screen is by the mean temperature T of corresponding coal sample of each moment (5) in desorption processj' and entire desorption process solution
Heat absorption Q' shows that heat of desorption is measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380991.0A CN108120656B (en) | 2017-12-20 | 2017-12-20 | System and method for measuring temperature and heat in coal bed gas adsorption and desorption processes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380991.0A CN108120656B (en) | 2017-12-20 | 2017-12-20 | System and method for measuring temperature and heat in coal bed gas adsorption and desorption processes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108120656A true CN108120656A (en) | 2018-06-05 |
| CN108120656B CN108120656B (en) | 2020-05-12 |
Family
ID=62230319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711380991.0A Expired - Fee Related CN108120656B (en) | 2017-12-20 | 2017-12-20 | System and method for measuring temperature and heat in coal bed gas adsorption and desorption processes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108120656B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001074A (en) * | 2018-06-06 | 2018-12-14 | 辽宁工程技术大学 | A kind of solar heat pipe heating Desorption And Seepage of Coalbed Methane experimental provision |
| CN110082496A (en) * | 2019-05-24 | 2019-08-02 | 华北科技学院 | A kind of three axis coal sample model experimental systems |
| CN110082497A (en) * | 2019-05-24 | 2019-08-02 | 华北科技学院 | A kind of three axis coal sample model experiment methods |
| CN113237917A (en) * | 2021-04-20 | 2021-08-10 | 中国煤炭地质总局勘查研究总院 | Method and device for calculating methane adsorption amount in coal at different temperatures |
| CN113899654A (en) * | 2021-10-11 | 2022-01-07 | 重庆大学 | Experiment system and experiment method for measuring coal sample gas loss amount |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4671098A (en) * | 1985-09-25 | 1987-06-09 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Energy, Mines And Resources | Delta P instrument for oxidation measurement |
| SU1354061A1 (en) * | 1984-03-27 | 1987-11-23 | Институт проблем комплексного освоения недр АН СССР | Device for determining sorption capacity of natural coals |
| WO2007117156A1 (en) * | 2006-04-07 | 2007-10-18 | Nano Cluster Devices Limited | Temperature modulated hydrogen sensing |
| CN201884024U (en) * | 2010-09-28 | 2011-06-29 | 北京品傲光电科技有限公司 | Fiber grating sensor-based system used for monitoring coalbed methane well |
| US20120118041A1 (en) * | 2009-07-20 | 2012-05-17 | China University Of Mining & Technology (Beijing) | System and method for testing gas migration process in coal-rock mass |
| CN103245743A (en) * | 2013-05-09 | 2013-08-14 | 四川大学 | Rapid detection method for expired gas through on-line enrichment gas chromatography |
| CN203241316U (en) * | 2013-04-18 | 2013-10-16 | 山东科技大学 | Deformation characteristic parameter testing device for use in thermal expansion process of coal test sample |
| CN103698411A (en) * | 2013-12-25 | 2014-04-02 | 辽宁工程技术大学 | Device and method for improving coal bed gas desorption efficiency with microwaves |
| CN103926479A (en) * | 2014-04-30 | 2014-07-16 | 辽宁工程技术大学 | Charge monitoring device in coal gas migration process and monitoring method thereof |
| CN104007249A (en) * | 2014-06-03 | 2014-08-27 | 辽宁工程技术大学 | Rock mass stress state analysis method |
| CN104502251A (en) * | 2014-12-23 | 2015-04-08 | 黑龙江科技大学 | System and method for testing influence of external water invasion to gas-containing coal body seepage |
| CN104864914A (en) * | 2015-06-04 | 2015-08-26 | 武汉理工大学 | Method and system for online detection of air pressure and temperature of air cylinder based on optical fiber sensing |
| CN105784489A (en) * | 2016-02-29 | 2016-07-20 | 辽宁工程技术大学 | Test device and method for coal body deformation under action of true triaxial stress, seepage, adsorption and desorption |
| US20160290907A1 (en) * | 2015-04-01 | 2016-10-06 | Schlumberger Technology Corporation | Determination of free volume of a rock sample using high pressure adsorption data |
| CN106018105A (en) * | 2016-05-17 | 2016-10-12 | 重庆大学 | Multifunctional physical simulation test system for coal engineering and coal model test method |
| US9829352B2 (en) * | 2012-08-17 | 2017-11-28 | Research Institute Of Innovative Technology For The Earth | Distribution measurement system for pressure, temperature, strain of material, monitoring method for carbon dioxide geological sequestration, assessing method for impact of carbon dioxide injection on integrity of strata, and monitoring method for freezing using same |
| US9841531B2 (en) * | 2013-04-28 | 2017-12-12 | Guangzhou Institute Of Energy Conversion, Chinese Academy Of Sciences | Three-dimensional simulating device for the stratum stability in the natural hydrate exploitation |
-
2017
- 2017-12-20 CN CN201711380991.0A patent/CN108120656B/en not_active Expired - Fee Related
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1354061A1 (en) * | 1984-03-27 | 1987-11-23 | Институт проблем комплексного освоения недр АН СССР | Device for determining sorption capacity of natural coals |
| US4671098A (en) * | 1985-09-25 | 1987-06-09 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Energy, Mines And Resources | Delta P instrument for oxidation measurement |
| WO2007117156A1 (en) * | 2006-04-07 | 2007-10-18 | Nano Cluster Devices Limited | Temperature modulated hydrogen sensing |
| US20120118041A1 (en) * | 2009-07-20 | 2012-05-17 | China University Of Mining & Technology (Beijing) | System and method for testing gas migration process in coal-rock mass |
| CN201884024U (en) * | 2010-09-28 | 2011-06-29 | 北京品傲光电科技有限公司 | Fiber grating sensor-based system used for monitoring coalbed methane well |
| US9829352B2 (en) * | 2012-08-17 | 2017-11-28 | Research Institute Of Innovative Technology For The Earth | Distribution measurement system for pressure, temperature, strain of material, monitoring method for carbon dioxide geological sequestration, assessing method for impact of carbon dioxide injection on integrity of strata, and monitoring method for freezing using same |
| CN203241316U (en) * | 2013-04-18 | 2013-10-16 | 山东科技大学 | Deformation characteristic parameter testing device for use in thermal expansion process of coal test sample |
| US9841531B2 (en) * | 2013-04-28 | 2017-12-12 | Guangzhou Institute Of Energy Conversion, Chinese Academy Of Sciences | Three-dimensional simulating device for the stratum stability in the natural hydrate exploitation |
| CN103245743A (en) * | 2013-05-09 | 2013-08-14 | 四川大学 | Rapid detection method for expired gas through on-line enrichment gas chromatography |
| CN103698411A (en) * | 2013-12-25 | 2014-04-02 | 辽宁工程技术大学 | Device and method for improving coal bed gas desorption efficiency with microwaves |
| CN103926479A (en) * | 2014-04-30 | 2014-07-16 | 辽宁工程技术大学 | Charge monitoring device in coal gas migration process and monitoring method thereof |
| CN104007249A (en) * | 2014-06-03 | 2014-08-27 | 辽宁工程技术大学 | Rock mass stress state analysis method |
| CN104502251A (en) * | 2014-12-23 | 2015-04-08 | 黑龙江科技大学 | System and method for testing influence of external water invasion to gas-containing coal body seepage |
| US20160290907A1 (en) * | 2015-04-01 | 2016-10-06 | Schlumberger Technology Corporation | Determination of free volume of a rock sample using high pressure adsorption data |
| CN104864914A (en) * | 2015-06-04 | 2015-08-26 | 武汉理工大学 | Method and system for online detection of air pressure and temperature of air cylinder based on optical fiber sensing |
| CN105784489A (en) * | 2016-02-29 | 2016-07-20 | 辽宁工程技术大学 | Test device and method for coal body deformation under action of true triaxial stress, seepage, adsorption and desorption |
| CN106018105A (en) * | 2016-05-17 | 2016-10-12 | 重庆大学 | Multifunctional physical simulation test system for coal engineering and coal model test method |
Non-Patent Citations (3)
| Title |
|---|
| FLORES G 等: "Through oven transfer adsorption–desorption interface for the analysis of methyl jasmonate in aromatic samples by on-line RPLC-GC", 《JOURNAL OF SEPARATION SCIENCE》 * |
| 刘杰 等: "热力耦合作用下含瓦斯煤层渗透特性试验研究", 《辽宁工程技术大学学报（自然科学版）》 * |
| 刘纪坤 等: "煤体瓦斯解吸过程温度场测量研究", 《西安科技大学学报》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001074A (en) * | 2018-06-06 | 2018-12-14 | 辽宁工程技术大学 | A kind of solar heat pipe heating Desorption And Seepage of Coalbed Methane experimental provision |
| CN109001074B (en) * | 2018-06-06 | 2020-12-25 | 辽宁工程技术大学 | Solar heat pipe heating coal bed gas desorption seepage experimental apparatus |
| CN110082496A (en) * | 2019-05-24 | 2019-08-02 | 华北科技学院 | A kind of three axis coal sample model experimental systems |
| CN110082497A (en) * | 2019-05-24 | 2019-08-02 | 华北科技学院 | A kind of three axis coal sample model experiment methods |
| CN110082496B (en) * | 2019-05-24 | 2024-05-17 | 华北科技学院 | Triaxial coal sample model experiment system |
| CN113237917A (en) * | 2021-04-20 | 2021-08-10 | 中国煤炭地质总局勘查研究总院 | Method and device for calculating methane adsorption amount in coal at different temperatures |
| CN113899654A (en) * | 2021-10-11 | 2022-01-07 | 重庆大学 | Experiment system and experiment method for measuring coal sample gas loss amount |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108120656B (en) | 2020-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108120656A (en) | Measure coal body absorption and the system and method for desorption coal bed gas process temperature and heat | |
| CN104122147B (en) | Wide simulator and method are dynamically stitched in a kind of crack | |
| CN101446542B (en) | Triaxial core holder | |
| CN202502025U (en) | Device for high pressure isothermal absorption experiment of coal | |
| CN104729948B (en) | Coal containing methane gas aqueous vapor two phase fluid flow experimental system and method | |
| CN102147348B (en) | Device and method for measuring gas permeation in coal | |
| CN105699273B (en) | A kind of test device and method of steam drive coal gas Desorption And Seepage | |
| CN105606517A (en) | Instrument for measuring relative permeability of low permeability reservoir using nuclear magnetic resonance | |
| CN103758512A (en) | Method and device for integrally testing reaction and seepage characteristics in oil reservoir | |
| CN101936861A (en) | Test method of supercritical carbon dioxide content in coal | |
| CN205538584U (en) | Testing arrangement of steam driven coal body methane desorption seepage flow | |
| CN105466907A (en) | Method and special device for in-situ online determination of expansion coefficient of CO2-alkane system | |
| CN105842275A (en) | Steam driven coal gas desorption heat conduction test method | |
| CN106769684B (en) | Shale Gas Diffusion Capability Test System | |
| CN207036599U (en) | A kind of test device that carbon dioxide replacement shale gas is utilized under multi- scenarios method effect | |
| CN205920034U (en) | Measure gas logging device of higher permeability rock core | |
| CN203929583U (en) | The proving installation of a kind of gas bearing shale factor of porosity and absorption parameter | |
| CN103728184B (en) | The stress-strain test system of simulation reservoir environment and method of testing thereof | |
| CN103207130B (en) | Method for testing deformation feature parameters of coal test sample in thermal expansion process | |
| CN105004650A (en) | Gas permeation testing method in low-permeability rock time-dependent deformation under action of thermal-gas-mecha-nical coupling | |
| CN102914485B (en) | Device and method for testing deviation factor of natural gas in porous medium | |
| CN107576604A (en) | A kind of gas hydrates rock core flow velocity sensitivity measurement system | |
| CN113686750A (en) | Coal measure stratum composite phase state CO2Seepage characteristic test device and application | |
| CN201464331U (en) | Axial loading device for gassy coal thermo-hydro-mechanical coupling triaxial servo seepage tests | |
| CN103195401A (en) | Coal reservoir yield increasing transforming experiment device under stratum conditions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200512 Termination date: 20201220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |