CN105510447A - Mounting device for acoustic emission sensor for hydrofracture simulation experiment - Google Patents
Mounting device for acoustic emission sensor for hydrofracture simulation experiment Download PDFInfo
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- CN105510447A CN105510447A CN201510876131.0A CN201510876131A CN105510447A CN 105510447 A CN105510447 A CN 105510447A CN 201510876131 A CN201510876131 A CN 201510876131A CN 105510447 A CN105510447 A CN 105510447A
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- calibrate
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- erecting device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/223—Supports, positioning or alignment in fixed situation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
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- General Health & Medical Sciences (AREA)
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- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a mounting device for an acoustic emission sensor for a hydrofracture simulation experiment. The device comprises a base plate, a cover plate opposite to the base plate and a protective casing located between the base plate and the cover plate and connected with the base plate and the cover plate, wherein a cavity is defined by the base plate, the cover plate and the protective casing, and the acoustic emission sensor is put in the cavity; the base plate is connected with a wafer of the acoustic emission sensor; a through hole is reserved in the protective casing, a sensor port of the acoustic emission sensor is introduced towards the outside of the cavity through the through hole; an ultrasonic wave coupling agent is applied between the base plate and the wafer of the acoustic emission sensor, and a gap between the cover plate and the acoustic emission sensor and a gap between the protective casing and the acoustic emission sensor are filled with rubber washers. With the adoption of the mounting device, the acoustic emission sensor is simple and convenient to mount, and the signal-to-noise ratio is increased.
Description
Technical field
The present invention relates to oil-field development technical field, particularly relate to the calibrate AE sensor erecting device for waterfrac treatment simulated experiment.
Background technology
Have many methods to may be used for Damage Detection of Rock Materials, as resistivity, electromagnetism, X ray CT etc., the acoustic emission wherein based on elastic wave has the easy advantage being easy to promote of method.Acoustic emission is the elastic wave excited along with the generation of material internal microfissure, and it is directly dynamically relevant with rock interior micro rupture.Acoustic emission can be carried out damage of rock state and be judged and damage quantitative evaluation, its range of application relates to numerous applications such as mining engineering, Geotechnical Engineering, oceanographic engineering, petroleum engineering and defence engineering, can monitor hard brittle materials such as various rock and concrete.But be subject to the impact of the monitoring of environmental such as rock sample yardstick is large, on-load pressure (mode, size), temperature and water, installation and the raising signal to noise ratio (S/N ratio) of calibrate AE sensor become a difficult problem.
Summary of the invention
The embodiment of the present invention provides a kind of calibrate AE sensor erecting device for waterfrac treatment simulated experiment, and in order to make calibrate AE sensor simple installation and to improve signal to noise ratio (S/N ratio), this device comprises:
Base plate 2, the cover plate 4 relative with base plate 2 position, the containment vessel 3 be connected between base plate 2 with cover plate 4, with base plate 2 and cover plate 4;
Base plate 2, cover plate 4 and containment vessel 3 form a cavity, place calibrate AE sensor 1 in described cavity; Base plate 2 is connected with the wafer of calibrate AE sensor 1; Containment vessel 3 leaves a through hole, the sensor interface 6 of calibrate AE sensor 1 is drawn outside described cavity by described through hole.
In an embodiment, between the wafer of base plate 2 and calibrate AE sensor 1, be coated with ultrasonic wave-coupled agent.
In an embodiment, the gap between cover plate 4 and calibrate AE sensor 1 and the gap-fill between containment vessel 3 and calibrate AE sensor 1 have rubber sheet gasket 5.
In an embodiment, containment vessel 3 is cylindrical stainless steel material.
In an embodiment, base plate 2 is brass material; And/or cover plate 4 is stainless steel material.
In an embodiment, base plate 2 and containment vessel 3 are bolted; And/or cover plate 4 and containment vessel 3 are bolted.
In an embodiment, the described calibrate AE sensor erecting device for waterfrac treatment simulated experiment also comprises: the wire 7 be connected with sensor interface 6.
In an embodiment, one end of wire 7 is connected with sensor interface 6, and the other end is connected with acoustic emission preamplifier.
In an embodiment, the described calibrate AE sensor erecting device for waterfrac treatment simulated experiment is positioned in the boring of rock surface, and wire 7 is embedded in the metallic channel of rock surface.
In an embodiment, the described calibrate AE sensor erecting device resin glue for waterfrac treatment simulated experiment and/or plasticine are fixed in the boring of rock surface, and wire 7 putty and/or plasticine are embedded in the metallic channel of rock surface.
The calibrate AE sensor erecting device for waterfrac treatment simulated experiment of the embodiment of the present invention, structure is simple, easy to operate, highly versatile, solve calibrate AE sensor in rock triaxial tests and a difficult problem for difficulty is installed, avoid the situation that calibrate AE sensor directly bears high pressure, decrease the interference of noise, improve signal to noise ratio (S/N ratio).
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.In the accompanying drawings:
Fig. 1 is the structural representation for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment in the embodiment of the present invention;
Fig. 2 is the schematic diagram of containment vessel in the embodiment of the present invention;
Fig. 3 is the schematic diagram of base plate and cover plate in the embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the embodiment of the present invention is described in further details.At this, schematic description and description of the present invention is for explaining the present invention, but not as a limitation of the invention.
In order to solve calibrate AE sensor in prior art, difficult and that signal to noise ratio (S/N ratio) is not high difficult problem is installed, a kind of calibrate AE sensor erecting device for waterfrac treatment simulated experiment is provided in the embodiment of the present invention.Fig. 1 is the structural representation for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment in the embodiment of the present invention, and as shown in Figure 1, this device can comprise:
Base plate 2, the cover plate 4 relative with base plate 2 position, the containment vessel 3 be connected between base plate 2 with cover plate 4, with base plate 2 and cover plate 4;
Base plate 2, cover plate 4 and containment vessel 3 form a cavity, place calibrate AE sensor 1 in described cavity; Base plate 2 is connected with the wafer of calibrate AE sensor 1; Containment vessel 3 leaves a through hole, the sensor interface 6 of calibrate AE sensor 1 is drawn outside described cavity by described through hole.
The calibrate AE sensor erecting device for waterfrac treatment simulated experiment of the embodiment of the present invention can solve the difficult problem that difficulty installed by complete three-dimensional large scale waterfrac treatment simulated experiment acoustic emission monitor(ing) sensor, such as can for indoor large full three-dimensional hydraulic pressure break physical simulation experiment (being called for short large thing mould), rock sample is of a size of 762mm × 762mm × 914mm and carries out calibrate AE sensor installation.The calibrate AE sensor erecting device for waterfrac treatment simulated experiment of the embodiment of the present invention can make calibrate AE sensor simple installation, avoids calibrate AE sensor directly to bear the situation of high pressure, reduces the interference of noise, improves signal to noise ratio (S/N ratio).In embodiment, the process of acoustic emission equipment to cracky crack initiation, expansion and extension can be utilized in an experiment to carry out real-time dynamic monitoring, directly observe forming the form in crack after the test, thus provide a kind of important means for the research of pressure break theory and demonstration.
During concrete enforcement, can also adopt a series of measures to improve signal to noise ratio (S/N ratio) further, the quality of effective guarantee acoustic emission monitor(ing) record.Such as, ultrasonic wave-coupled agent can be smeared between base plate 2 and the wafer of calibrate AE sensor 1.And for example, the gap between cover plate 4 and calibrate AE sensor 1 and the gap between containment vessel 3 and calibrate AE sensor 1 can filled rubber pads 5.Between base plate 2 and the wafer of calibrate AE sensor 1, smear ultrasonic wave-coupled agent can also prevent calibrate AE sensor from being damaged by pressure.
During concrete enforcement, containment vessel 3, base plate 2 and cover plate 4 can adopt multiple material.Such as, containment vessel 3 can adopt stainless steel material.And for example, base plate 2 can adopt brass material; And/or cover plate 4 can adopt stainless steel material.Containment vessel 3 can be cylindrical, between base plate 2 and cover plate 4, form cylindrical side wall.Containment vessel 3 also can be other shape.Fig. 2 is the schematic diagram of containment vessel in the embodiment of the present invention.In Fig. 2, the cross section of containment vessel 3 is polygon.Base plate 2 and cover plate 4 also can be circular or other shape.Fig. 3 is the schematic diagram of base plate and cover plate in the embodiment of the present invention.In Fig. 3, base plate 2 and cover plate 4 are circle.
Between base plate 2 and the wafer of calibrate AE sensor 1, smear ultrasonic wave-coupled agent, the gap between cover plate 4 and calibrate AE sensor 1 and the gap-fill rubber sheet gasket 5 between containment vessel 3 and calibrate AE sensor 1 and containment vessel 3 and cover plate 4 adopt stainless steel material that Rigidity and strength is very large, base plate 2 adopts the brass material suitable with Rock Velocity; at utmost can reduce decay and the distortion of signal, improve the quality of signal record.
Base plate 2 can be connected with containment vessel 3 in several ways with containment vessel 3, cover plate 4.Such as, in figs. 2 and 3, base plate 2 and containment vessel 3 can be bolted; And/or cover plate 4 and containment vessel 3 can be bolted.Bolt hole 8 has been shown in Fig. 2 and Fig. 3.
Again as shown in Figure 1, in an embodiment, the above-mentioned calibrate AE sensor erecting device for waterfrac treatment simulated experiment can also comprise: the wire 7 be connected with sensor interface 6.During concrete enforcement, one end of wire 7 can be connected with sensor interface 6, and the other end can be connected with acoustic emission preamplifier.Wire 7 can adopt Teflon antidamping material, to improve signal to noise ratio (S/N ratio) further.
During concrete enforcement, the above-mentioned calibrate AE sensor erecting device for waterfrac treatment simulated experiment can be positioned in the boring of rock surface, and wire 7 can be embedded in the metallic channel of rock surface.Concrete, the above-mentioned calibrate AE sensor erecting device for waterfrac treatment simulated experiment can be fixed in the boring of rock surface with the material such as resin glue and/or plasticine, and wire 7 can be embedded in the metallic channel of rock surface with the material such as putty and/or plasticine.
Below in conjunction with Fig. 1, Fig. 2 and Fig. 3, illustrate the concrete installation process for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment in the embodiment of the present invention.
In installation process; first, be connected with containment vessel 3 by base plate 2, base plate 2 edge leaves 3 equally distributed bolts hole 8; diameter is 1.5mm; opening-like, angle is 90 °, after bolt tightening; nuts is equal with base plate 2; 3 bolts hole 8 are left in containment vessel 3 corresponding position, and bolt length is 3mm, are connected by base plate 2 with three bolts with containment vessel 3.
Damaged by pressure to prevent calibrate AE sensor 1; at the chip end uniform application ultrasonic coupling agent of calibrate AE sensor 1; again calibrate AE sensor 1 is positioned in the above-mentioned cavity connected; the sensor interface 6 of calibrate AE sensor 1 is drawn from the through hole containment vessel 3; be coupled fully with the wafer of calibrate AE sensor 1 Deng base plate 2; rubber sheet gasket 5 on calibrate AE sensor 1 side and top pad, is mainly used in fixed sound emission sensor 1 and reduces noise transmission.
Cover plate 4 and containment vessel 3 are connected, the structure of cover plate 4 is identical with base plate 2, cover plate 4 and containment vessel 3 is connected with three bolts.
The calibrate AE sensor 1 assembled is connected wire 7, and the other end is connected with prime amplifier, and wire 7 can adopt Teflon antidamping material.
Bore the hole of placing the calibrate AE sensor erecting device being used for waterfrac treatment simulated experiment on the surface of rock, and cut out the groove of drawing wire 7, the bottom surface of hole and metallic channel is smooth.The above-mentioned calibrate AE sensor erecting device epoxy resin for waterfrac treatment simulated experiment connected is fixed in the good hole of above-mentioned brill.Firmly pressing is used for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment, lets go again, fix with plasticine after waiting adhering with epoxy resin firmly.Wire 7 is extracted along groove and fixes with plasticine.Plasticine is softer, avoids the destruction produced wire, also can not produce noise.
Base plate 2 adopts brass material, and brass is of a size of diameter 27.5mm, thick 1.5mm, and brass velocity of wave is 3500m/s, suitable with rock speed.Cover plate 4 adopts stainless steel, and size is identical with base plate 2.
Containment vessel 3 adopts stainless steel, and height is 16mm, and external diameter 27.5mm, internal diameter 21.6mm, wall thickness 3mm, A/F is 9.5mm, and compressive strength is high.
The SE150-M type sensor that calibrate AE sensor 1 can adopt score company of the U.S. to produce, diameter 20.32mm is highly 13.34mm, bandwidth 50-500kHz, dominant frequency 150kHz.
Rubber sheet gasket 5 can adopt General Purpose Rubber thin slice, has certain elasticity.Wire 7 can adopt Teflon antidamping material wire.
In sum, the calibrate AE sensor erecting device for waterfrac treatment simulated experiment of the embodiment of the present invention, structure is simple, easy to operate, highly versatile, solve calibrate AE sensor in rock triaxial tests and a difficult problem for difficulty is installed, avoid the situation that calibrate AE sensor directly bears high pressure, decrease the interference of noise, improve signal to noise ratio (S/N ratio).
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1., for a calibrate AE sensor erecting device for waterfrac treatment simulated experiment, it is characterized in that, comprising:
Base plate (2), the cover plate (4) relative with base plate (2) position, is positioned at the containment vessel (3) be connected between base plate (2) with cover plate (4), with base plate (2) and cover plate (4);
Base plate (2), cover plate (4) and containment vessel (3) form a cavity, place calibrate AE sensor (1) in described cavity; Base plate (2) is connected with the wafer of calibrate AE sensor (1); (3) leave a through hole to containment vessel, and the sensor interface (6) of calibrate AE sensor (1) is drawn outside described cavity by described through hole.
2., as claimed in claim 1 for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment, it is characterized in that, between the wafer of base plate (2) and calibrate AE sensor (1), be coated with ultrasonic wave-coupled agent.
3. as claimed in claim 1 for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment; it is characterized in that, the gap between cover plate (4) and calibrate AE sensor (1) and the gap-fill between containment vessel (3) and calibrate AE sensor (1) have rubber sheet gasket (5).
4., as claimed in claim 1 for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment, it is characterized in that, containment vessel (3) is cylindrical stainless steel material.
5., as claimed in claim 1 for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment, it is characterized in that, base plate (2) is brass material; And/or cover plate (4) is stainless steel material.
6. as claimed in claim 1 for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment, it is characterized in that, base plate (2) and containment vessel (3) are bolted; And/or cover plate (4) and containment vessel (3) are bolted.
7. the calibrate AE sensor erecting device for waterfrac treatment simulated experiment as described in any one of claim 1 to 6, is characterized in that, also comprise: the wire (7) be connected with sensor interface (6).
8., as claimed in claim 7 for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment, it is characterized in that, one end of wire (7) is connected with sensor interface (6), and the other end is connected with acoustic emission preamplifier.
9. as claimed in claim 7 for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment, it is characterized in that, the described calibrate AE sensor erecting device for waterfrac treatment simulated experiment is positioned in the boring of rock surface, and wire (7) is embedded in the metallic channel of rock surface.
10. as claimed in claim 7 for the calibrate AE sensor erecting device of waterfrac treatment simulated experiment, it is characterized in that, the described calibrate AE sensor erecting device resin glue for waterfrac treatment simulated experiment and/or plasticine are fixed in the boring of rock surface, and wire (7) is embedded in the metallic channel of rock surface with putty and/or plasticine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510876131.0A CN105510447A (en) | 2015-12-03 | 2015-12-03 | Mounting device for acoustic emission sensor for hydrofracture simulation experiment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510876131.0A CN105510447A (en) | 2015-12-03 | 2015-12-03 | Mounting device for acoustic emission sensor for hydrofracture simulation experiment |
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| CN201510876131.0A Pending CN105510447A (en) | 2015-12-03 | 2015-12-03 | Mounting device for acoustic emission sensor for hydrofracture simulation experiment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404916A (en) * | 2016-08-24 | 2017-02-15 | 中国石油大学(北京) | Experimental method for monitoring natural hard rock hydraulic fracturing by acoustic emission system |
| CN107917963A (en) * | 2017-11-14 | 2018-04-17 | 中南大学 | One kind is suitable for three axis loading hydraulic pressure break sound emission card insertion fixture of large dimension specimen |
| CN109973085A (en) * | 2019-03-25 | 2019-07-05 | 中国科学院地质与地球物理研究所 | Measure the system and method for gas hydrates velocity of wave |
| CN110018244A (en) * | 2019-05-16 | 2019-07-16 | 石家庄铁道大学 | Multi-purpose acoustic emission probe and its application method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109973085B (en) * | 2019-03-25 | 2020-04-28 | 中国科学院地质与地球物理研究所 | System and method for measuring wave velocity of natural gas hydrate |
| CN110018244A (en) * | 2019-05-16 | 2019-07-16 | 石家庄铁道大学 | Multi-purpose acoustic emission probe and its application method |
| CN110018244B (en) * | 2019-05-16 | 2024-02-13 | 石家庄铁道大学 | Multipurpose acoustic emission probe and using method thereof |
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