CN209673605U - A kind of measuring device suitable for hypotonic special low permeability cores porosity - Google Patents
A kind of measuring device suitable for hypotonic special low permeability cores porosity Download PDFInfo
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- CN209673605U CN209673605U CN201920455902.2U CN201920455902U CN209673605U CN 209673605 U CN209673605 U CN 209673605U CN 201920455902 U CN201920455902 U CN 201920455902U CN 209673605 U CN209673605 U CN 209673605U
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- pedestal
- headstock
- measurement pipe
- inner cavity
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Abstract
The utility model discloses a kind of measuring devices suitable for hypotonic special low permeability cores porosity, including pedestal, the inside of the pedestal to be equipped with supporting table；The active porosity being driven through inside rock core by the gas inside top cover in pressure difference enters pedestal, increase the air pressure of chassis interior, air pressure inside volume measurement device increases, instruction device experiences the compensation device that turns on the power after air pressure increases, move up power compensation device traction instruction device, until the air pressure inside pedestal and volume measurement device is restored to normal pressure state, the weight of instruction device will not have an impact the air pressure of chassis interior, cooperate the volume change of the graduation mark record chassis interior gas on volume measurement device, the effecive porosity inside rock core is released by the volume change and experimental period of chassis interior gas, the cavity volume in calibration pipeline and air valve is not needed, it is not in error, accuracy of measurement is high.
Description
Technical field
The utility model relates to the measuring device fields of core porosity, are suitable for more specifically to one kind hypotonic
The measuring device of special low permeability cores porosity.
Background technique
Rock is progress underground petroleum and natural gas storing, CO2 are stored, shale gas stores, main Jie of nuclear waste disposal
Common a kind of complex dielectrics in the engineering constructions such as matter and geological environment and water conservancy and hydropower, mine and tunnel, the effective hole of rock
The size of porosity directly determines the structure and permeance property of rock, thus to its accurate measurement to study of rocks structure and infiltration
Permeability can be most important, and the test method of rock material effecive porosity mainly has hold-up mensuration and gasmetry at present
Method, hold-up mensuration are based on Archimedes principle, and gasometry is based on Boyle, Robert theorem, and used rock has at present
Imitating voidage measuring device is designed according to both methods.
But the active porosity measuring device based on the design of hold-up mensuration is not suitable for hypotonic core sample,
Hypotonic core sample is difficult to be saturated feed liquor body, such as uses high pressure saturation, will cause certain injury to sample, be unfavorable for section
Credit analysis, while pipeline, air valve are needed one by one using more in the active porosity measuring device based on gasometry design
The cavity volume in pipeline and air valve to be calibrated, error is easy to appear, accuracy of measurement is low, when especially measuring special low permeability cores,
Its porosity inherently very little, even if 1 ‰ measurement error, the deviation for also resulting in test result to the sample of comparison rule exists
10% or more, irregular, defective sample variation is just bigger, therefore needs to design a kind of suitable for hypotonic special low permeability cores hole
The measuring device of porosity.
Utility model content
1. technical problems to be solved
It is not applicable for the active porosity measuring device existing in the prior art based on the design of hold-up mensuration
In hypotonic core sample, hypotonic core sample is difficult to be saturated feed liquor body, such as uses high pressure saturation, will cause one to sample
Fixed injury is unfavorable for analysing scientifically, while pipeline, air valve in the active porosity measuring device based on gasometry design
Using more, need to calibrate the cavity volume in pipeline and air valve one by one, be easy to appear error, accuracy of measurement is low, especially
When measuring special low permeability cores, inherently very little can also lead the sample of comparison rule even if 1 ‰ measurement error porosity
Cause the deviation of test result 10% or more, irregular, defective sample variation just bigger problem, the mesh of the utility model
Be a kind of measuring device suitable for hypotonic special low permeability cores porosity is provided, it is suitable for hypotonic special low permeability cores hole
The measurement of degree, accuracy in detection are high.
2. technical solution
To solve the above problems, the utility model adopts the following technical scheme.
A kind of measuring device suitable for hypotonic special low permeability cores porosity, including pedestal, the inside of the pedestal are equipped with
Supporting table offers through-hole in the middle part of the supporting table, and the top surface of the supporting table is equipped with rock core, and the side of the pedestal is equipped with
Fixed plate, the bottom surface of the fixed plate are equipped with power compensation device, and the top of the pedestal is equipped with top cover, the top surface of the top cover
Equipped with snorkel, relief valve, time set, the top surface of the top cover inner cavity is equipped with pressing device；
The power compensation device includes headstock, and the top of the headstock and the bottom surface of fixed plate are bolted, institute
The front for stating headstock offers heat release hole, and the bottom surface of the power box cavity is equipped with battery and power motor, the power
The external fixing sleeve of motor output shaft is connected to take-up pulley and limiting device, and the take-up pulley has been externally wrapped with drag-line；
Volume measurement device includes measurement pipe, and the measurement pipe is right-angle elbow pipe, the top of the measurement pipe and headstock
Bottom surface connection, the other end of the measurement pipe is connected to pedestal, and the surface of the measurement pipe offers measuring flume, the measurement
The inner sealing of slot is equipped with photoscope, and the surface of the measurement pipe is equipped with graduation mark compatible with photoscope；The measurement
The inner wall of pipe is equipped with pressing plate, and the inside of the measurement pipe is equipped with the instruction device being located above pressing plate, the bottom surface of the headstock
It is sequentially connected by reset spring and instruction device.
Preferably, the time set includes connecting tube, and the bottom end of the connecting tube and the top surface of top cover connect, the company
The bottom end of adapter tube offers intercommunicating pore, and the underrun strain spring of the connection tube cavity is sequentially connected with strain piston, institute
The inner wall for stating strain piston and connecting tube is slidably connected, and the top of the connecting tube is equipped with stopwatch, and the stopwatch is equipped with starting
Button, the start button are located inside connecting tube.
Preferably, the pressing device includes telescopic rod, and the top of the telescopic rod is connect with the top surface of top cover inner cavity, institute
The external activity for stating telescopic rod is socketed with holddown spring, and the bottom end of the telescopic rod is connected with pressing plate, and the two of the holddown spring
End is connect with the top surface of the top surface of top cover inner cavity and pressing plate respectively, and the side of the pressing plate and the inner wall of pedestal are slidably connected, institute
It states and offers instrument connection in the middle part of pressing plate, the diameter value of the instrument connection and the diameter value of through-hole are equal, the through-hole and test
Hole is coaxial.
Preferably, the limiting device includes ratchet-gear wheel, and the output shaft of the ratchet-gear wheel and power motor is fixedly attached, institute
The bottom surface for stating power box cavity is connected with one end of elastic slice, and the elastic slice is in bending, the other end energy and ratchet of the elastic slice
Ratchet clamping on wheel, the side of the elastic slice are connected with one end of bracing wire, and the other end of the bracing wire extends to headstock
Outside is simultaneously connected with pull head, and the side of the headstock offers holding tank, the pull head and holding tank sliding plug.
Preferably, the instruction device includes rubber column, and the outer surface of the rubber column and the inner wall of measurement pipe slide and connect
It connects, the inside of the rubber column offers constant pressure hole, fixing groove, mounting groove, and the bottom surface of the mounting groove inner cavity is equipped with Thin Elastic
The top surface of film, the elastic film is equipped with lower conductive film, and the internal whorl of the mounting groove is socketed with seal head, the seal head
Bottom surface offer appearance become slot, it is described hold become slot inner cavity top surface be equipped with upper conductive film.
3. beneficial effect
Compared with the prior art, utility model has the advantages that
It is passed through pressure-sustaining gas to the inside of top cover by snorkel, the air pressure inside top cover is increased and reaches steady state value,
Time set is experienced after air pressure reaches steady state value and is automatically turned on, and records experimental period, then the gas inside top cover is in pressure difference
The active porosity being driven through inside rock core enter pedestal, increase the air pressure of chassis interior, and then fill cubing
It sets internal air pressure to increase, instruction device is experienced after air pressure increases and automatically turns on power compensation device, and power compensation device is made
Traction instruction device moves up, until the air pressure inside pedestal and volume measurement device is restored to normal pressure state, instruction device
Weight the air pressure of chassis interior will not be had an impact, so that the air pressure of chassis interior is in the state of a dynamic equilibrium, match
The volume change for closing the graduation mark record chassis interior gas on volume measurement device, is become by the volume of chassis interior gas
Change amount and experimental period release the effecive porosity inside rock core, do not need the cavity volume in calibration pipeline and air valve, will not
There is error, accuracy of measurement is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic diagram of internal structure of time set in the utility model Fig. 1；
Fig. 3 is the schematic diagram of internal structure of headstock in the utility model Fig. 1；
Fig. 4 is the sectional view in the utility model Fig. 3 at A-A；
Fig. 5 is the schematic diagram of internal structure of volume measurement device in the utility model Fig. 1；
Fig. 6 is the schematic diagram of internal structure of instruction device in the utility model Fig. 5.
Figure label explanation:
1, pedestal；2, supporting table；3, through-hole；4, rock core；5, fixed plate；6, top cover；7, snorkel；8, relief valve；9, it counts
When device；901, connecting tube；902, intercommunicating pore；903, strain spring；904, piston is strained；905, stopwatch；906, start button；
10, pressing device；11, power compensation device；12, limiting device；1201, ratchet-gear wheel；1202, elastic slice；1203, bracing wire；1204,
Pull head；1205, holding tank；13, volume measurement device；14, instruction device；1401, rubber column；1402, constant pressure hole；1403, solid
Determine slot；1404, mounting groove；1405, elastic film；1406, lower conductive film；1407, seal head；1408, hold and become slot；1409, on
Conductive film；15, telescopic rod；16, holddown spring；17, pressing plate；18, headstock；19, battery；20, power motor；21, take-up
Wheel；22, drag-line；23, measurement pipe；24, measuring flume；25, photoscope；26, graduation mark；27, reset spring.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model；The technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe；Obviously；The described embodiments are only a part of the embodiments of the utility model；Rather than whole
Embodiment.Based on the embodiments of the present invention；Those of ordinary skill in the art are without making creative work
Every other embodiment obtained；It fall within the protection scope of the utility model.
Please refer to Fig. 1-6, a kind of measuring device suitable for hypotonic special low permeability cores porosity, including pedestal 1, pedestal 1
Inside be equipped with supporting table 2, the top surface of supporting table 2 is equipped with sealing ring, and the middle part of supporting table 2 offers through-hole 3, supporting table 2
Top surface is equipped with rock core 4, and the side of pedestal 1 is equipped with fixed plate 5, and the bottom surface of fixed plate 5 is equipped with power compensation device 11, pedestal 1
Top is equipped with top cover 6, and the top surface of top cover 6 is equipped with snorkel 7, relief valve 8, time set 9, and the top surface of 6 inner cavity of top cover is equipped with pressure
Tight device 10.
Time set 9 includes connecting tube 901, and the bottom end of connecting tube 901 is connect with the top surface of top cover 6, the bottom of connecting tube 901
End offers intercommunicating pore 902, and the underrun strain spring 903 of 901 inner cavity of connecting tube is sequentially connected with strain piston 904, answers
Become piston 904 and the inner wall of connecting tube 901 is slidably connected, the top of connecting tube 901 is equipped with stopwatch 905, and stopwatch 905 is equipped with and opens
Dynamic button 906, start button 906 are located inside connecting tube 901.
Pressing device 10 includes telescopic rod 15, and the top of telescopic rod 15 is connect with the top surface of 6 inner cavity of top cover, telescopic rod 15
External activity is socketed with holddown spring 16, and the bottom end of telescopic rod 15 is connected with pressing plate 17, the both ends of holddown spring 16 respectively with top
The top surface of 6 inner cavity of lid is connected with the top surface of pressing plate 17, and for fixing rock core 4, the bottom surface of pressing plate 17 is equipped with gasket, pressing plate 17
Side and the inner wall of pedestal 1 are slidably connected, and the middle part of pressing plate 17 offers instrument connection, and the diameter value of instrument connection is straight with through-hole 3
Diameter value is equal, makes the area equation of through-hole 3 Yu instrument connection, and through-hole 3 and instrument connection are coaxial, limits rock core 4 for testing porosity
Area.
Power compensation device 11 includes headstock 18, and the top of headstock 18 and the bottom surface of fixed plate 5 are bolted, power
The front of case 18 offers heat release hole, and the bottom surface of 18 inner cavity of headstock is equipped with battery 19 and power motor 20, power motor 20
The external fixing sleeve of output shaft is connected to take-up pulley 21 and limiting device 12, and take-up pulley 21 has been externally wrapped with drag-line 22, for putting down
The weight for the instruction device 14 that weighs, makes the weight of instruction device 14 will not influence the variation of 1 air pressure inside of pedestal.
Limiting device 12 includes ratchet-gear wheel 1201, and ratchet-gear wheel 1201 and the output shaft of power motor 20 are fixedly attached, power
The bottom surface of 18 inner cavity of case is connected with one end of elastic slice 1202, and elastic slice 1202 is in bending, the other end energy and ratchet of elastic slice 1202
Ratchet clamping on wheel 1201, the side of elastic slice 1202 are connected with one end of bracing wire 1203, and the other end of bracing wire 1203 extends to
The outside of headstock 18 is simultaneously connected with pull head 1204, and the side of headstock 18 offers holding tank 1205, pull head 1204 and receiving
1205 sliding plug of slot, limits for the output shaft to power motor 20.
Volume measurement device 13 includes measurement pipe 23, and measurement pipe 23 is right-angle elbow pipe, the top of measurement pipe 23 and headstock
18 bottom surface connection, the other end of measurement pipe 23 are connected to pedestal 1, and the surface of measurement pipe 23 offers measuring flume 24, measuring flume
24 inner sealing is equipped with photoscope 25, and the surface of measurement pipe 23 is equipped with graduation mark 26 compatible with photoscope 25；Measurement
The inner wall of pipe 23 is equipped with pressing plate 17, and the inside of measurement pipe 23 is equipped with the instruction device 14 for being located at 17 top of pressing plate, headstock 18
Underrun reset spring 27 and instruction device 14 are sequentially connected, and one end of drag-line 22 extends to 23 inside of measurement pipe and passes through multiple
Position and is connect spring 27 with instruction device 14.
Instruction device 14 includes rubber column 1401, and the outer surface of rubber column 1401 and the inner wall of measurement pipe 23 are slidably connected,
The inside of rubber column 1401 offers constant pressure hole 1402, fixing groove 1403, mounting groove 1404, the both ends in constant pressure hole 1402 and measurement
The inner cavity of pipe 23 is connected to the inner cavity of fixing groove 1403, and the inner cavity of fixing groove 1403 is connected to the inner cavity of mounting groove 1404, installation
The bottom surface of 1404 inner cavity of slot is equipped with elastic film 1405, and the top surface of elastic film 1405 is equipped with lower conductive film 1406, mounting groove
1404 internal whorl is socketed with seal head 1407, and the bottom surface of seal head 1407 offers appearance and becomes slot 1408, holds and become in slot 1408
The top surface of chamber is equipped with upper conductive film 1409.
Working principle:
Snorkel 7 be connected to external constant pressure gas source first, then passes through snorkel 7 to being passed through constant pressure gas inside top cover 6
Source increases the air pressure inside top cover 6, and then the high pressure gas inside top cover 6 passes through intercommunicating pore 902 and will strain piston 904
It pushes up, strain piston 904 moves up and squeeze start button 906, opens stopwatch 905, starts timing, at this time top cover 6
Internal air pressure reaches steady state value, then the active porosity that is driven through rock core 4 inside of the gas inside top cover 6 in pressure difference
Into pedestal 1, increase the air pressure inside pedestal 1, the air pressure inside the measurement pipe 23 being then connected to pedestal 1 increases, measurement
High pressure gas inside pipe 23 passes through constant pressure hole 1402, fixing groove 1403 and the surface for acting on elastic film 1405, makes elasticity
The upward deformation of arching upward of film 1405, lower conductive film 1406 generate deformation therewith, connect lower conductive film 1406 with upper conductive film 1409
The power supply of power motor 20 is connected in touching, makes power motor 20 that take-up pulley 21 be driven to rotate, drag-line 22 is wrapped in take-up pulley 21
Outside, then drag-line 22 pulls instruction device 14 and shifts up, until the air pressure inside pedestal 1 and measurement pipe 23 is restored to normal pressure
State, elasticity under the action of own resilient of elastic film 1405 is restored at this time, makes lower conductive film 1406 and upper conductive film 1409
It separates, power motor 20 stops operating, and then elastic slice 1202 makes under the action of own resilient on one end and ratchet-gear wheel 1201
Ratchet clamping, the output shaft of power motor 20 is limited, the output shaft of power motor 20 cannot rotate backward, and then to instruction
Device 14 is limited, and instruction device 14 is made not fall, and the weight of instruction device 14 will not generate the air pressure inside pedestal 1
Influence, so that air pressure pedestal 1 inside is in the state of a dynamic equilibrium, then observation rubber column 1401 move up away from
From the graduation mark 26 on cooperation volume measurement device 13 records the volume change of 1 internal gas of pedestal, 1 internal gas of pedestal
Volume change and experimental period release across rock core 4 gas flow, by gas flow, draught head release rock core 4 on
Active porosity area calculate the volume of active porosity on rock core 4, and then release on rock core 4 in conjunction with the thickness value of rock core 4
Active porosity, do not need the cavity volume in calibration pipeline and air valve, be not in error, accuracy of measurement is high.
It is described above；The only preferable specific embodiment of the utility model；But the protection scope of the utility model is not
It is confined to this；Anyone skilled in the art is within the technical scope disclosed by the utility model；It is practical according to this
Novel technical solution and its improvement design is subject to equivalent substitution or change；It should all cover in the protection scope of the utility model
It is interior.
Claims (5)
1. a kind of measuring device suitable for hypotonic special low permeability cores porosity, including pedestal (1), it is characterised in that: the bottom
The inside of seat (1) is equipped with supporting table (2), offers through-hole (3) in the middle part of the supporting table (2), the top surface of the supporting table (2)
Equipped with rock core (4), the side of the pedestal (1) is equipped with fixed plate (5), and the bottom surface of the fixed plate (5) is filled equipped with power compensation
Set (11), the top of the pedestal (1) is equipped with top cover (6), the top surface of the top cover (6) be equipped with snorkel (7), relief valve (8),
The top surface of time set (9), top cover (6) inner cavity is equipped with pressing device (10)；
The power compensation device (11) includes headstock (18), the top of the headstock (18) and the bottom surface of fixed plate (5)
It is bolted, the front of the headstock (18) offers heat release hole, and the bottom surface of headstock (18) inner cavity is equipped with battery
(19) and power motor (20), the external fixing sleeve of power motor (20) output shaft are connected to take-up pulley (21) and limiting device
(12), the take-up pulley (21) has been externally wrapped with drag-line (22)；
Volume measurement device (13) includes measurement pipe (23), and the measurement pipe (23) is right-angle elbow pipe, the measurement pipe (23)
Top is connect with the bottom surface of headstock (18), and the other end of the measurement pipe (23) is connected to pedestal (1), the measurement pipe (23)
Surface offer measuring flume (24), the inner sealing of the measuring flume (24) is equipped with photoscope (25), the measurement pipe
(23) surface is equipped with photoscope (25) compatible graduation mark (26)；The inner wall of the measurement pipe (23) is equipped with pressing plate
(17), the inside of the measurement pipe (23) is equipped with the instruction device (14) being located above pressing plate (17), the headstock (18)
Underrun reset spring (27) and instruction device (14) are sequentially connected.
2. a kind of measuring device suitable for hypotonic special low permeability cores porosity according to claim 1, it is characterised in that:
The time set (9) includes connecting tube (901), and the bottom end of the connecting tube (901) is connect with the top surface of top cover (6), described
The bottom end of connecting tube (901) offers intercommunicating pore (902), the underrun strain spring (903) of connecting tube (901) inner cavity
It is sequentially connected with strain piston (904), strain piston (904) and the inner wall of connecting tube (901) are slidably connected, the connection
The top for managing (901) is equipped with stopwatch (905), and the stopwatch (905) is equipped with start button (906), the start button (906)
It is internal positioned at connecting tube (901).
3. a kind of measuring device suitable for hypotonic special low permeability cores porosity according to claim 1, it is characterised in that:
The pressing device (10) includes telescopic rod (15), and the top of the telescopic rod (15) is connect with the top surface of top cover (6) inner cavity, institute
The external activity for stating telescopic rod (15) is socketed with holddown spring (16), and the bottom end of the telescopic rod (15) is connected with pressing plate (17),
The both ends of the holddown spring (16) are connect with the top surface of the top surface of top cover (6) inner cavity and pressing plate (17) respectively, the pressing plate
(17) inner wall of side and pedestal (1) is slidably connected, and offers instrument connection in the middle part of the pressing plate (17), the instrument connection
Diameter value is equal with the diameter value of through-hole (3), and the through-hole (3) and instrument connection are coaxial.
4. a kind of measuring device suitable for hypotonic special low permeability cores porosity according to claim 1, it is characterised in that:
The limiting device (12) includes ratchet-gear wheel (1201), the output shaft fixing sleeve of the ratchet-gear wheel (1201) and power motor (20)
It connects, the bottom surface of headstock (18) inner cavity is connected with one end of elastic slice (1202), and the elastic slice (1202) is in bending, described
The other end of elastic slice (1202) can be clamped with the ratchet on ratchet-gear wheel (1201), and the side of the elastic slice (1202) is connected with bracing wire
(1203) other end of one end, the bracing wire (1203) extends to the outside of headstock (18) and is connected with pull head (1204),
The side of the headstock (18) offers holding tank (1205), the pull head (1204) and holding tank (1205) sliding plug.
5. a kind of measuring device suitable for hypotonic special low permeability cores porosity according to claim 1, it is characterised in that:
The instruction device (14) includes rubber column (1401), and the outer surface of the rubber column (1401) and the inner wall of measurement pipe (23) are sliding
Dynamic connection, the inside of the rubber column (1401) offers constant pressure hole (1402), fixing groove (1403), mounting groove (1404), institute
The bottom surface for stating mounting groove (1404) inner cavity is equipped with elastic film (1405), and the top surface of the elastic film (1405) is equipped with lower conduction
The internal whorl of film (1406), the mounting groove (1404) is socketed with seal head (1407), the bottom surface of the seal head (1407)
It offers appearance and becomes slot (1408), the top surface for becoming slot (1408) inner cavity that holds is equipped with upper conductive film (1409).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920455902.2U CN209673605U (en) | 2019-04-05 | 2019-04-05 | A kind of measuring device suitable for hypotonic special low permeability cores porosity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920455902.2U CN209673605U (en) | 2019-04-05 | 2019-04-05 | A kind of measuring device suitable for hypotonic special low permeability cores porosity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209673605U true CN209673605U (en) | 2019-11-22 |
Family
ID=68573771
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920455902.2U Expired - Fee Related CN209673605U (en) | 2019-04-05 | 2019-04-05 | A kind of measuring device suitable for hypotonic special low permeability cores porosity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432889A (en) * | 2020-12-03 | 2021-03-02 | 中国科学院力学研究所 | Method for measuring rock porosity by liquid saturation method and correction method |
-
2019
- 2019-04-05 CN CN201920455902.2U patent/CN209673605U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432889A (en) * | 2020-12-03 | 2021-03-02 | 中国科学院力学研究所 | Method for measuring rock porosity by liquid saturation method and correction method |
| CN112432889B (en) * | 2020-12-03 | 2022-02-22 | 中国科学院力学研究所 | Method for measuring rock porosity by liquid saturation method and correction method |
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Granted publication date: 20191122 Termination date: 20200405 |