CN218350048U - Shale damage and shale gas adsorption and desorption measuring device - Google Patents
Shale damage and shale gas adsorption and desorption measuring device Download PDFInfo
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- CN218350048U CN218350048U CN202222208524.2U CN202222208524U CN218350048U CN 218350048 U CN218350048 U CN 218350048U CN 202222208524 U CN202222208524 U CN 202222208524U CN 218350048 U CN218350048 U CN 218350048U
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Abstract
The utility model discloses a shale damage and shale gas adsorption desorption measuring device, including pressure chamber, temperature control system and hydraulic jack, the pressure chamber is including relative top board and the holding down plate that sets up, the top board with the holding down plate is used for the card to press the shale test piece, be equipped with the thermal resistance silk in the pressure chamber, the thermal resistance silk is connected temperature control system, hydraulic jack connects the servo compression testing machine of electricity liquid, servo electric hydraulic compression testing machine electricity connection test machine control terminal. The utility model discloses a set up hydraulic jack electrohydraulic servo compression testing machine with testing machine control terminal can be right but the automatic load of applying the continuous variation of shale test piece realizes rightly the atress simulation of shale test piece under the loading of continuous variation, through the temperature control system with the thermal resistance silk can be controlled the constancy of temperature in the pressure chamber, the device simple structure, convenient to use, respond well.
Description
Technical Field
The utility model relates to a shale analysis field, especially a shale damage and shale gas adsorption desorption measuring device.
Background
Shale gas in China has huge resource potential, particularly the Sichuan basin and the periphery thereof, the Erdos basin, the main basins in the northwest region and the like, but exploration is still in an exploration stage. The shale gas is mainly absorbed in pores and cracks of the mud shale rich in organic substances and interlayers thereof, unconventional natural gas exists in an absorption or free state, the components are mainly methane, and a shale-surrounding rock system is in a relative balance state under the common stress of shale gas pressure and shale. When the shale stratum is excavated, the balance between the shale stratum and the soil is easy to break, and shale gas outburst accidents are easy to happen to the shale stratum. The adsorption and desorption of shale gas occur under certain stress and temperature conditions, and the deeper the depth of the shale generally, the larger the load (ground stress) is, the more easily the explosion occurs. The method is used for accurately measuring and analyzing the relation between the shale adsorption and desorption content and the shale damage under the loading condition, and is an important basis for evaluating shale gas emission quantity prediction, shale gas explosion prediction and the like of a working face of shale reservoir exploitation.
At present, under the conditions of temperature and stress, the research on instruments for measuring the adsorption and desorption content of shale gas and the damage of shale is basically in the blank field in China, and the lack of the device seriously hinders the research on the mechanism of the content of shale gas and the damage of shale. The method is limited to research means, some scholars independently test through a shale monitoring device and a shale gas adsorption and desorption test device, shale test pieces in the test devices are difficult to continuously load and keep constant temperature, so that the test load and temperature are unstable, in addition, the method is difficult to obtain real-time data of shale adsorption and desorption changing along with shale damage, the obtained data are often large in error, and therefore a full-automatic shale damage and shale gas adsorption and desorption measuring device is urgently needed, and technical support is provided for the occurrence mechanism research of shale gas disasters and the guidance of safe construction of shale strata.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the shale gas adsorption and desorption measuring device comprises a shale gas adsorption and desorption testing device, a constant temperature control device and a constant temperature control device.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides a shale damage and shale gas adsorption desorption measuring device, includes pressure chamber, temperature control system and hydraulic jack, the pressure chamber is including relative top board and the holding down plate that sets up, the top board with the holding down plate is used for blocking pressure mud shale test piece, be equipped with the thermal resistance silk in the pressure chamber, the thermal resistance silk is connected temperature control system, hydraulic jack connects the servo compression testing machine of electricity liquid, the servo compression testing machine electricity of electricity liquid connects testing machine control terminal.
Adopt a mud shale damage and shale gas adsorption desorption measuring device, through setting up hydraulic jack the servo compression testing machine of electricity liquid with testing machine control terminal can be right but the automatic load of applying the continuous variation of mud shale test piece realizes rightly the atress simulation of mud shale test piece under the loading of continuous variation, through the temperature control system with the thermal resistance silk can be controlled the constancy of temperature in the pressure chamber, the device simple structure, convenient to use, respond well.
Preferably, the device for measuring the shale damage and shale gas adsorption and desorption further comprises a top plate, a frame and a base which are sequentially connected from top to bottom, wherein the hydraulic jack is arranged on the top plate, and the pressure chamber is arranged on the base.
Further preferably, a fixing table is sleeved in the middle of the top plate, and the hydraulic jack is sleeved in the middle of the fixing table.
Further preferably, the shale damage and shale gas adsorption and desorption measuring device further comprises a strain gauge and a resistance strain gauge, wherein the at least one strain gauge is arranged on the shale test piece, and the strain gauge is connected with the resistance strain gauge.
Further preferably, the device for measuring the damage of the shale and the adsorption and desorption of the shale gas further comprises an ultrasonic probe and an ultrasonic detector, wherein the upper pressing plate and the lower pressing plate are respectively internally provided with one ultrasonic probe, and the ultrasonic probe is connected with the ultrasonic detector.
By adopting the structure, the strain gauge and the ultrasonic probe are arranged, so that the change process of the ultrasonic wave velocity and the stress-strain data of the shale test piece can be monitored in real time.
Further preferably, the shale damage and shale gas adsorption and desorption measuring device further comprises a shale gas storage tank, a high-precision gas mass flow meter and a first vacuum pump, wherein the shale gas storage tank is sequentially communicated with the high-precision gas mass flow meter, the first vacuum pump and the pressure chamber through an air inlet pipe.
Further preferably, the shale damage and shale gas adsorption and desorption measuring device further comprises a waste gas recovery tank and a shale gas desorption system, wherein the waste gas recovery tank is sequentially connected with the shale gas desorption system and the pressure chamber through an air outlet pipe.
Further preferably, shale gas desorption system includes graduated flask, infrared ranging sensor, circular foam kickboard, basin, singlechip, relay, second vacuum pump and third vacuum pump, graduated flask bottom intercommunication the basin, set up in the graduated flask circular foam kickboard, infrared ranging sensor establishes in the graduated flask and with the singlechip electricity is connected, the relay respectively with the second vacuum pump with the third vacuum pump electricity is connected, the pressure chamber passes through the outlet duct connects gradually the second vacuum pump with the graduated flask, the graduated flask passes through the outlet duct connects gradually the third vacuum pump with waste gas recovery jar.
By adopting the structure, the shale gas desorption system is arranged, shale gas desorption gas enters from the lower end of the measuring cylinder, weak bubbles can also cause the change of the liquid level in the measuring cylinder to drive the height change of the circular foam floating plate, the infrared distance measuring sensor can detect extremely trace shale gas through measuring the height of the circular foam floating plate, the measurement is more accurate, and compared with a device for measuring the shale gas desorption by adopting a high-precision gas mass flow meter, the problem that the measurement range of the gas flow meter is exceeded or the measurement of the weak shale gas desorption gas cannot be sensed accurately is solved.
Further preferably, a first control valve is arranged on the air inlet pipe, and a second control valve is arranged on the air outlet pipe.
Further preferably, the high-precision gas mass flow meter, the shale gas desorption system, the resistance strain gauge, the ultrasonic detector and the testing machine control terminal are respectively connected with a computer terminal.
Preferably, the hydraulic jack is connected with an electro-hydraulic servo pressure tester through a liquid guide pipe, and the electro-hydraulic servo pressure tester is electrically connected with a tester control terminal through a control lead.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses a mud shale damage and shale gas adsorption desorption measuring device, through setting up hydraulic jack, the electricity liquid servo pressure test machine and the test machine control terminal can be to the automatic load that can continuously change of applying of mud shale test piece, realize to the atress simulation of mud shale test piece under the loading of continuous change, through the temperature control system with the thermal resistance silk can control the interior constancy of temperature of pressure chamber, the device simple structure, convenient to use, respond well;
2. the utility model discloses an optimal shale damage and shale gas adsorption desorption measuring device can monitor the change process of the ultrasonic wave velocity and stress-strain data of the shale test piece in real time by setting the strain gauge and the ultrasonic probe;
3. the utility model discloses preferred a shale damage and shale gas adsorption desorption measuring device sets up shale gas desorption system, shale gas desorption gas are followed the graduated flask lower extreme gets into, and weak bubble also can arouse the change of the inside liquid level of graduated flask drives circular foam kickboard altitude variation, infrared distance measuring sensor is through measuring the height of circular foam kickboard also can detect extremely micro-shale gas, measures more accurately, and with the contrast that adopts the gaseous mass flow meter of high accuracy to measure shale gas desorption device, has solved the range scope that exceeds gas flowmeter or can't respond to the inaccurate shale gas desorption gas measurement problem of gaseous shale gas.
Drawings
Fig. 1 is a schematic structural diagram of a shale damage and shale gas adsorption and desorption measuring device;
fig. 2 is a schematic structural view of the pressure chamber.
The mark in the figure is: 1-shale gas storage tank, 2-high-precision gas mass flowmeter, 3-pressure chamber, 4-shale test piece, 5-pressure indicator lamp, 601-first control valve, 602-second control valve, 701-first vacuum pump, 702-second vacuum pump, 703-third vacuum pump, 8-strain gauge, 9-resistance strain gauge, 10-ultrasonic probe, 11-ultrasonic detector, 12-limit snap ring, 13-temperature control system, 14-thermal resistance wire, 15-frame, 16-base, 17-top plate, 18-fixed table, 19-hydraulic jack, 20-electro-hydraulic servo pressure tester, 21-liquid guide pipe, 22-signal transmission line, 23-air inlet pipe, 24-air outlet pipe, 25-tester control terminal, 26-two control lead, 27-first electromagnetic two-position three-way valve, 28-measuring cylinder, 29-infrared distance measuring sensor, 30-circular foam floating plate, 31-water tank, 32-control circuit box, 33-single chip microcomputer, 34-two-position lead, 35-second electromagnetic two-way valve, 36-lower electromagnetic three-way valve, 37-lower electromagnetic three-way valve, 39-electromagnetic three-way press plate, and fourth electromagnetic three-way press plate computer 41.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Examples
As shown in figures 1-2, a shale damage and shale gas adsorption desorption measuring device, including pressure chamber 3, 3 bottoms of pressure chamber and top are provided with holding down plate 37 and top board 38 respectively, ultrasonic probe 10 is fixed inside holding down plate 37 and top board 38, mud shale test piece 4 is fixed between holding down plate 38 and holding down plate 37 and wholly settles in pressure chamber 3 through spacing snap ring 12, 8 symmetries of foil gage set up 4 both sides of mud shale test piece and are connected with resistance strain gauge 9 through signal transmission line 22, pressure indicator 5 sets up in pressure chamber 3 one side, thermal resistance wire 14 sets up at pressure chamber 3 lateral wall and is connected with temperature control system 13 electricity.
Shale gas holding vessel 1 is connected with pressure chamber 3 through high accuracy gas mass flowmeter 2, first vacuum pump 701 and intake pipe 23, and 3 opposite sides of pressure chamber are connected with waste gas recovery jar 36 through shale gas desorption system, are provided with first control valve 601 on the intake pipe 23 way between shale gas holding vessel 1 to the pressure chamber 3, and 24 ways of outlet duct between pressure chamber 3 to waste gas recovery jar 36 are provided with second control valve 602.
The frame 15 is symmetrically fixed on two sides of the base 16, the top plate 17 is fixed on the top of the frame 15 by welding, the middle part of the top plate 17 is sleeved with a fixed table 18, the middle part of the fixed table 18 is sleeved with a hydraulic jack 19, the hydraulic jack 19 is connected with an electro-hydraulic servo pressure tester 20 through a liquid guide pipe 21, and the electro-hydraulic servo pressure tester 20 is electrically connected with a tester control terminal 25 through a control lead 26; the high-precision gas mass flowmeter 2, the shale gas desorption system, the resistance strain gauge 9, the ultrasonic detector 11 and the tester control terminal 25 are respectively and electrically connected with a computer terminal 41 through signal transmission lines 22, and specifically, the computer terminal 41 is a notebook computer.
In a specific embodiment, the shale gas desorption system comprises a first electromagnetic two-position three-way valve 27, a second electromagnetic two-position three-way valve 35, a third electromagnetic two-position three-way valve 39, a fourth electromagnetic two-position three-way valve 40, a measuring cylinder 28, an infrared distance measuring sensor 29, a circular foam floating plate 30, a water tank 31, a control circuit box 32, a single chip microcomputer 33, a relay 34, a second vacuum pump 702 and a third vacuum pump 703, wherein the bottom of the measuring cylinder 28 is connected with the water tank 31 through a conduit, the circular foam floating plate 30 is arranged in the measuring cylinder 28, the infrared distance measuring sensor 29 is arranged in the measuring cylinder 28 and is electrically connected with the single chip microcomputer 33 through a signal transmission line 22, the relay 34 is respectively electrically connected with the second vacuum pump 702, the third vacuum pump 703, the first electromagnetic two-way valve 27, the second electromagnetic two-position three-way valve 35, the third electromagnetic two-position three-way valve 39 and the fourth electromagnetic three-way valve 40 through the signal transmission line 22, the relay 34 and the single chip microcomputer 33 are arranged in the control circuit box 32, the pressure chamber 3 is connected with the measuring cylinder 28 through an air outlet pipe 24 and a second vacuum pump 702, the waste gas recycling tank 36 is connected with the measuring cylinder 28 through the air outlet pipe 24 and a third vacuum pump 703, the measuring cylinder 28 comprises four measuring cylinders, the first electromagnetic two-position three-way valve 27 is connected with the second vacuum pump 702, the first measuring cylinder 28 and the second measuring cylinder 28, the second electromagnetic two-position three-way valve 35 is connected with the first measuring cylinder 28, the second measuring cylinder 28 and the third vacuum pump 703, the third electromagnetic two-position three-way valve 39 is connected with the second measuring cylinder 28, the third measuring cylinder 28 and the third vacuum pump 703, and the fourth electromagnetic two-position three-way valve 40 is connected with the third measuring cylinder 28, the fourth measuring cylinder 28 and the third vacuum pump 703; the single chip microcomputer 33 is an MSC-51 single chip microcomputer 33 chip, and the model of the infrared distance measuring sensor 29 is GP2Y0E03.
In a specific embodiment, a first control valve 601 is disposed on the air inlet pipe 23 between the shale gas storage tank 1 and the pressure chamber 3, and a second control valve 602 is disposed on the air outlet pipe 24 between the pressure chamber 3 and the shale waste gas recovery tank 36.
In a specific embodiment, the first vacuum pump 701, the second vacuum pump 702 and the third vacuum pump 703 are all DC12V micro vacuum pumps, the positive and negative electrodes at the bottoms of the first vacuum pump 701, the second vacuum pump 702 and the third vacuum pump 703 are electrically connected to a motor, a matched control switch and a power supply through leads, the high-precision gas mass flow meter 2 is an LZB-3WB glass rotameter, the high-precision gas mass flow meter 2 measures shale gas flowing out of the shale gas storage tank 1 in real time and transmits the data to the computer terminal 41 through a signal transmission line 22, and the shale gas desorption system measures shale gas desorbed from the shale test piece 4 in real time and transmits the data to the computer terminal 41 through the signal transmission line 22.
In a specific embodiment, the resistance strain gauge 9 is a LB-IV multichannel digital strain gauge, the resistance strain gauge 9 measures the stress-strain value of the shale test piece 4 through the strain gauge 8 and transmits the stress-strain value to the computer terminal 41 through the signal transmission line 22 in real time, the ultrasonic detector is a ZBL-U520 type nonmetal ultrasonic detector 11, the ultrasonic probe 10 is a TCT40-16T waterproof ultrasonic probe 10, and the ultrasonic detector measures the ultrasonic wave velocity value of the shale test piece 4 through the ultrasonic probe 10 and transmits the ultrasonic wave velocity value to the computer terminal 41 through the signal transmission line 22 in real time.
In a specific embodiment, the pressure chamber 3 is hermetically arranged, and the top end of the pressure chamber is provided with a fixing screw and a sealing ring; the pressure chamber 3 is fixed through the thread at the top end of the pressure chamber 3 and a corresponding fixing screw; and a sealing ring is arranged at the top end of the pressure chamber 3 to ensure that the pressure chamber 3 is in a closed environment.
In a specific embodiment, the thermal resistance wire 14 is arranged on the side wall of the pressure chamber 3 and connected with the temperature control system 13 through a lead, an insulating layer wrapped on the side wall surface of the pressure chamber 3 is further arranged outside the thermal resistance wire 14, and the temperature control system 13 adjusts and controls the temperature inside the pressure chamber 3 through the thermal resistance wire 14 and the insulating layer.
In a specific embodiment, the opposite side surfaces of the upper pressing plate 38 and the lower pressing plate 37 are paved with insulating pads, and since the strain gauge 8 and the ultrasonic probe 10 can supply electricity to the shale test piece 4, by arranging the insulating pads, the upper pressing plate 38 and the lower pressing plate 37 can be prevented from influencing the measurement of the resistance strain gauge 9 and the ultrasonic detector, so that the measurement accuracy of the stress strain and the ultrasonic velocity change of the shale test piece 4 can be improved.
In a specific embodiment, the opposite side surfaces of the upper pressing plate 38 and the lower pressing plate 37 are symmetrically provided with the limiting snap rings 12 and the limiting snap ring 12 screws used in a matching way, so that the shale test pieces 4 can be effectively fixed, the measurement accuracy is ensured, and the shale test pieces 4 with different specifications and different shapes can be fixed by moving the limiting snap rings 12 and the limiting snap ring 12 screws; through set up the filler ring at spacing snap ring 12 inboard, can effectively restrict the removal of rock test piece in receiving the loading process of hydraulic jack 19.
In a specific embodiment, an elastic rubber ring is sleeved outside the strain gauge 8, so that errors caused by unstable contact when the shale test piece 4 is measured to be strained are prevented.
The specific operation steps of the shale damage and shale gas adsorption and desorption measuring device are as follows:
(1) In actual use, firstly, a shale test piece 4 meeting the test requirements is prefabricated, the size of the shale test piece can be controlled to be about phi 100mm multiplied by 150mm, and then whether the loading and unloading of the hydraulic jack 19 are normal or not is checked.
(2) Digging holes at two ends of a shale test piece 4, placing a strain gauge 8 into the holes, leading out a signal transmission line 22, paving and compacting the holes by using pulverized coal, fixing the shale test piece 4 by using a sealing reagent to prevent errors caused by unstable contact when the strain of the shale test piece 4 is measured, and then placing the shale test piece 4 on a lower pressing plate 37 and fixing the shale test piece by using a limiting snap ring 12; and then an upper pressure plate 38 with an ultrasonic probe 10 is placed at the top end of the shale test piece 4 and fixed through a limiting snap ring 12, the pressure chamber 3 is fixed through threads at the top end of the pressure chamber 3 and corresponding fixing screws, a sealing ring is arranged at the top end of the pressure chamber 3, and an upper cushion block is arranged at the upper part of the pressure chamber 3.
(3) Starting a computer terminal 41, controlling the load (stress) value of the shale test piece 4 through an electro-hydraulic servo pressure testing machine 20 and a hydraulic jack 19 according to the test requirements, and controlling the temperature inside a pressure chamber 3 through a temperature control system 13 so that the shale test piece 4 is under the specific stress and temperature conditions; opening a first control valve 601, pumping the shale gas in the shale gas storage tank 1 into the pressure chamber 3 by a first vacuum pump 701, measuring the content of the inflowing shale gas in real time by a first high-precision gas mass flow meter 2, and transmitting the data to a computer terminal 41 through a signal transmission line 22; the resistance strain gauge 9 measures the stress-strain value of the shale test piece 4 in real time through the strain gauge 8 and transmits the stress-strain value to the computer terminal 41; the ultrasonic detector measures the wave velocity change of the shale test piece 4 in real time through the ultrasonic probe 10 and transmits the wave velocity change to the computer terminal 41 through the signal transmission line 22.
(4) When the concentration of shale gas in the pressure chamber 3 exceeds a certain range, the pressure indicator lamp 5 starts to flicker, when the continuous flicker exceeds 3s, the shale test piece 4 is indicated to be adsorbed and saturated, the first control valve 601 is closed, the second control valve 602 is opened, the shale test piece 4 starts to be subjected to a desorption test after the second vacuum pump 702 is started, the shale gas desorbed from the shale test piece 4 in the pressure chamber 3 is pumped into the measuring cylinder 28 by the second vacuum pump 702, the measuring cylinder 28 measures the shale gas desorption content of the shale test piece 4 through uninterrupted drainage, the infrared ranging wave sensor measures the height change of the infrared ranging wave sensor from the infrared ranging wave sensor to the circular foam floating plate 30 in the measuring cylinder 28 through generating an infrared signal, the shale gas desorption content of the shale test piece 4 is obtained through calculation, the drainage volume is the product of the drainage height and the cross-sectional area of the measuring cylinder 28, the two-position single chip microcomputer 33 transmits data measured by the infrared ranging wave sensor to the computer terminal 41 in real time, and the relay 34 is respectively and electrically connected with the second vacuum pump 702, the third electromagnetic three-way valve 27, the second electromagnetic three-way valve 35, the third electromagnetic three-way valve 39 and the fourth electromagnetic three-way valve 40 through the signal transmission line 22; the control circuit box 32 is preset with an independent research and development program, the shale gas desorption content of the shale test piece 4 can be automatically calculated, and the scales outside the measuring cylinder 28 can be manually checked whether the data measured by the infrared distance measuring sensor 29 is accurate or not at any time. Repeating the operation until no desorption gas is generated in the shale test piece 4 or stopping manually; the single chip microcomputer 33 automatically records and stores shale gas desorption gas of the shale test piece 4 and transmits measured data to the computer terminal 41 in real time through the signal transmission line 22.
(5) The temperature control system 13 and the thermal resistance wire 14 can adjust the temperature of the pressure chamber 3 to simulate different temperatures, the electro-hydraulic servo pressure tester 20 and the matched tester control terminal 25 apply loads to the shale test piece 4 by controlling the hydraulic jack 19 to simulate different stress conditions, and the operations are repeated until no desorption gas is generated in the shale test piece 4 or the operation is stopped manually.
(6) Finally, relevant test data are extracted from the computer terminal 41 and analyzed.
According to the device for measuring the shale damage and shale gas adsorption and desorption, the hydraulic jack 19, the electro-hydraulic servo pressure tester 20 and the tester control terminal 25 are arranged to automatically apply continuously variable loads to the shale test piece 4, so that the stress simulation of the shale test piece 4 under the continuously variable loads is realized, and the temperature in the pressure chamber 3 can be controlled to be constant through the temperature control system 13 and the thermal resistance wire 14; the strain gauge 8 and the ultrasonic probe 10 are arranged to monitor the change process of the ultrasonic wave velocity and the stress-strain data of the shale test piece 4 in real time; the shale gas desorption system is arranged, so that shale gas desorption gas enters from the lower end of the measuring cylinder 28, weak bubbles can cause the change of the liquid level in the measuring cylinder 28 to drive the height of the circular foam floating plate 30 to change, the infrared distance measuring sensor 29 can detect extremely trace shale gas by measuring the height of the circular foam floating plate 30, the measurement is more accurate, and compared with a device for measuring the shale gas desorption by adopting a high-precision gas mass flowmeter, the problem that the measurement exceeding the range of the gas flowmeter or the measurement of weak shale gas desorption gas cannot be induced is inaccurate is solved; the device has simple structure, convenient use and good effect.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a shale damage and shale gas adsorption desorption measuring device, a serial communication port, including pressure chamber (3), temperature control system (13) and hydraulic jack (19), pressure chamber (3) are including relative top board (38) and holding down plate (37) that set up, top board (38) with holding down plate (37) are used for blocking pressure mud shale test piece (4), be equipped with thermal resistance wire (14) in pressure chamber (3), thermal resistance wire (14) are connected temperature control system (13), servo compression testing machine (20) of electric liquid is connected to hydraulic jack (19), electric servo compression testing machine (20) electricity connection testing machine control terminal (25).
2. The shale damage and shale gas adsorption and desorption measuring device according to claim 1, further comprising a top plate (17), a frame (15) and a base (16) which are sequentially connected from top to bottom, wherein the hydraulic jack (19) is arranged on the top plate (17), and the pressure chamber (3) is arranged on the base (16).
3. The shale damage and shale gas adsorption and desorption measuring device according to claim 2, further comprising a strain gauge (8) and a resistance strain gauge (9), wherein at least one strain gauge (8) is arranged on the shale test piece (4), and the strain gauge (8) is connected with the resistance strain gauge (9).
4. The shale damage and shale gas adsorption and desorption measuring device according to claim 3, further comprising an ultrasonic probe (10) and an ultrasonic detector (11), wherein one ultrasonic probe (10) is arranged in each of the upper pressing plate (38) and the lower pressing plate (37), and the ultrasonic probe (10) is connected with the ultrasonic detector (11).
5. The shale damage and shale gas adsorption and desorption measuring device according to claim 4, further comprising a shale gas storage tank (1), a high-precision gas mass flow meter (2) and a first vacuum pump (701), wherein the shale gas storage tank (1) is communicated with the high-precision gas mass flow meter (2), the first vacuum pump (701) and the pressure chamber (3) in sequence through a gas inlet pipe (23).
6. The shale damage and shale gas adsorption and desorption measuring device according to claim 5, further comprising an exhaust gas recovery tank (36) and a shale gas desorption system, wherein the exhaust gas recovery tank (36) is sequentially connected with the shale gas desorption system and the pressure chamber (3) through an exhaust pipe (24).
7. The shale damage and shale gas adsorption and desorption measuring device according to claim 6, wherein the shale gas desorption system comprises a measuring cylinder (28), an infrared distance measuring sensor (29), a circular foam floating plate (30), a water tank (31), a single chip microcomputer (33), a relay (34), a second vacuum pump (702) and a third vacuum pump (703), the bottom of the measuring cylinder (28) is communicated with the water tank (31), the circular foam floating plate (30) is arranged in the measuring cylinder (28), the infrared distance measuring sensor (29) is arranged in the measuring cylinder (28) and electrically connected with the single chip microcomputer (33), the relay (34) is respectively electrically connected with the second vacuum pump (702) and the third vacuum pump (703), the pressure chamber (3) is sequentially connected with the second vacuum pump (702) and the measuring cylinder (28) through the gas outlet pipe (24), and the measuring cylinder (28) is sequentially connected with the third vacuum pump (703) and the waste gas recovery tank (36) through the gas outlet pipe (24).
8. The shale damage and shale gas adsorption and desorption measuring device according to claim 7, wherein a first control valve (601) is arranged on the air inlet pipe (23), and a second control valve (602) is arranged on the air outlet pipe (24).
9. The shale damage and shale gas adsorption and desorption measuring device according to claim 6, wherein the high-precision gas mass flow meter (2), the shale gas desorption system, the resistance strain gauge (9), the ultrasonic detector (11) and the tester control terminal (25) are respectively connected with a computer terminal (41).
10. The shale damage and shale gas adsorption and desorption measuring device according to any one of claims 1-9, wherein the hydraulic jack (19) is connected with an electro-hydraulic servo pressure tester (20) through a liquid guide pipe (21), and the electro-hydraulic servo pressure tester (20) is electrically connected with a tester control terminal (25) through a control lead (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222208524.2U CN218350048U (en) | 2022-08-22 | 2022-08-22 | Shale damage and shale gas adsorption and desorption measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222208524.2U CN218350048U (en) | 2022-08-22 | 2022-08-22 | Shale damage and shale gas adsorption and desorption measuring device |
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|---|---|
| CN218350048U true CN218350048U (en) | 2023-01-20 |
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| CN202222208524.2U Active CN218350048U (en) | 2022-08-22 | 2022-08-22 | Shale damage and shale gas adsorption and desorption measuring device |
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| CN (1) | CN218350048U (en) |
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2022
- 2022-08-22 CN CN202222208524.2U patent/CN218350048U/en active Active
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