CN108931538A - A kind of experimental provision for carrying out rock-boring research using microwave - Google Patents
A kind of experimental provision for carrying out rock-boring research using microwave Download PDFInfo
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- CN108931538A CN108931538A CN201810693270.3A CN201810693270A CN108931538A CN 108931538 A CN108931538 A CN 108931538A CN 201810693270 A CN201810693270 A CN 201810693270A CN 108931538 A CN108931538 A CN 108931538A
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- waveguide
- circular hole
- microwave
- circular
- directional coupler
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
Abstract
The invention discloses a kind of experimental provision for carrying out rock-boring research using microwave, including microwave source, circulator, directional coupler, waveguide coaxial connecter, test cavity, endoscopes etc..Microwave source exports microwave energy；Circulator protects microwave source for absorbing back wave；Directional coupler is by being sampled microwave signal, measurement incidence and reflection power size；Waveguide coaxial connecter is used to the microwave power in rectangular waveguide going deep into rock interior as drill bit to coaxial line, and using the center conductor of coaxial line；Test cavity prevents microwave leakage for being electromagnetically shielded；Endoscope-use is in real-time monitoring experimental state.The present invention provides one kind not against tradition machinery drill bit, and without rotary part, when work does not generate the Novel drilling technology of noise and dust pollution, has preferable popularization and application foreground.
Description
Technical field
The present invention relates to rock-boring experimental provision technical fields more particularly to a kind of utilization microwave to carry out rock-boring and grind
The experimental provision studied carefully.
Background technique
Conventional rock-boring method at present is to utilize the drill bit harder than rock, by way of rotary cutting,
The processing in hole is completed on rock.Drilling device need to be equipped with motor, be used for a long time or object rock quality is hard, will cause drill bit
It is seriously worn, it is necessary to often replacement, while also auger spindle is periodically carried out oily.When carrying out bore operation, it can not keep away
The generation noise and a large amount of dust exempted from pollute surrounding enviroment, damage personnel health.
Microwave technology originates from early 20th century, is initially applied to communication field, quickly grows after World War II, gradually join the army
Thing is widely used in all trades and professions such as biology, medicine, chemical industry, food to production transition, but geotechnical engineering field using compared with
It is related to less.Studies have shown that there are three advantages for microwave heating tool, first is that speed is fast, directly gos deep into media interior, is passed not against heat
It leads；Second is to be quick on the draw, and does not need to preheat, and does not have thermal inertia phenomenon；Third is thermal energy high conversion efficiency.Above-mentioned advantage is being located
New idea and method is provided in terms of reason geotechnical engineering.The present invention utilizes thermal runaway (thermal runaway) effect, i.e., micro-
Wave heats the Fast Inhomogeneous of substance, high temperature is generated in the narrow regions much smaller than microwave wavelength, so that the region substance becomes
It is soft, then melt, at this moment drive drill bit go deep into inside substance, formed drilling.
Summary of the invention
The object of the invention is to remedy the disadvantages of known techniques, provides a kind of utilization microwave development rock-boring research
Experimental provision.
The present invention is achieved by the following technical solutions:
A kind of experimental provision for carrying out rock-boring research using microwave, includes microwave source, circulator, directional coupler, wave
Coaxial conversion and test cavity are led, microwave source is sequentially connected the rectangular waveguide one of circulator, directional coupler, waveguide coaxial connecter
The coaxial line one end at end, waveguide coaxial connecter is connect with test cavity, and object rock is placed on test inside cavity, and microwave source is defeated
Microwave power out, microwave power successively pass through circulator, directional coupler, are sampled by directional coupler to microwave power,
Incident and reflection power size is measured, microwave power passes through Waveguide coaxial and turn to waveguide coaxial connecter in directional coupler
For the microwave power changed commanders in rectangular waveguide to coaxial line, the microwave power in coaxial line is finally transmitted to test cavity, and
Act on object rock.
The waveguide coaxial connecter includes rectangular waveguide, circular waveguide, center conductor, mechanical tuning device and flange, institute
The flange stated is fixed on the right end of rectangular waveguide, and waveguide coaxial connecter is connect by flange with directional coupler, in the square
Circular hole one is provided on the downside broadside central axis of shape waveguide, the upper end of circular waveguide is connect with circular hole one, circular hole one and circular waveguide
With one heart, circular hole one is consistent with circular waveguide internal diameter, and circular hole two, the center are provided on the broadside central axis of rectangular waveguide top
Conductor is inserted vertically into circular hole two and protrudes into inside circular waveguide, and the circular hole one, circular hole two, circular waveguide and center conductor exist
In vertical direction with one heart, the mechanical tuning device includes metal plate and metal pull bar, and the metal plate is from rectangular waveguide
Left end is embedded into rectangular waveguide, and metal plate and rectangular waveguide inner wall clearance fit, one end of the metal pull bar is fixed on
On metal plate, by pulling metal pull bar to move metal plate in rectangular waveguide.
The top of the center conductor is cylindrical body, and lower part is cone, and center conductor is added by metal tungsten material
Made of work.
The test cavity includes shielding box, and center is provided with circular hole three, circular hole three and circular waveguide on shielding box
Lower end be connected, the diameter of circular hole three and the internal diameter of circular waveguide are consistent, and circular hole three and circular waveguide are concentric, the center conductor
Lower end passes through circular waveguide and circular hole three enters in shielding box, is provided with circular hole four in the side of shielding box, is equipped with and sees in circular hole four
Pipe is examined, the internal diameter of observation tube and the diameter of circular hole are consistent, and observation tube is concentric with circular hole.
The rectangular waveguide uses BJ22 standard waveguide, inner section broadside having a size of 109.2mm, narrow side having a size of
54.6mm。
Microwave source exports microwave energy；The effect of circulator is to absorb back wave, protects microwave source；Directional coupler passes through
Microwave signal is sampled, measurement incidence and reflection power size；Waveguide coaxial connecter is used for the microwave in rectangular waveguide
Power transmission gos deep into rock interior as drill bit to coaxial line, and using the center conductor of coaxial line；Test cavity effect be
Electromagnetic shielding, prevents microwave leakage；Endoscope-use is in real-time monitoring experimental state.
The invention has the advantages that the present invention provides one kind not against tradition machinery drill bit, without rotary part, when work
The Novel drilling technology of noise and dust pollution is not generated, applicable object is the dielectric materials such as rock, ceramics, concrete, glass,
With preferable popularization and application foreground.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is waveguide coaxial connecter structural schematic diagram.
Fig. 3 is waveguide coaxial connecter side view.
Fig. 4 is the waveform diagram of waveguide coaxial connecter standing wave.
Fig. 5 is mechanical tuning device structural schematic diagram.
Fig. 6 is test cavity structural schematic diagram.
Fig. 7 is test chamber body-side view.
Fig. 8 is waveguide coaxial connecter and test cavity installation diagram.
Fig. 9 is waveguide coaxial connecter and test cavity assembling side elevation.
Specific embodiment
As shown in Fig. 1,8,9, a kind of experimental provision for carrying out rock-boring research using microwave, includes microwave source 1, ring
Shape device 2, directional coupler 3, waveguide coaxial connecter 4 and test cavity 5, microwave source 1 are sequentially connected circulator 2, directional coupler
3, coaxial line one end of rectangular waveguide one end of waveguide coaxial connecter 4, waveguide coaxial connecter 4 is connect with test cavity 5, object rock
Stone is placed on inside test cavity 5, and microwave source 1 exports microwave power, and microwave power successively passes through circulator 2, directional coupler
3, microwave power is sampled by directional coupler 3, measurement incidence and reflection power size, microwave function in directional coupler 3
Rate is transmitted to waveguide coaxial connecter 4, by waveguide coaxial connecter 4 by the microwave power in rectangular waveguide to coaxial line, together
Microwave power in axis is finally transmitted to test cavity 5, and acts on object rock 20.Round sight is provided on test cavity 5
Hole is examined, monitors experiment real-time status for endoscope 19.
As shown in Figure 2,3, 4, the waveguide coaxial connecter 4 includes rectangular waveguide 7, circular waveguide 8, center conductor 9, adjusts
Humorous mechanism 10 and flange 6, select working frequency for 2.45GHz, and rectangular waveguide 7 uses BJ22 standard waveguide, the flange 6
It is fixed on the right end of rectangular waveguide 7, waveguide coaxial connecter 4 is connect by flange 6 with directional coupler 3, in the rectangular wave
It leads and is provided with circular hole 1 on 7 downside broadside central axis, the upper end of circular waveguide 8 is connect with circular hole 1, circular hole 1 and circle
With one heart, circular hole 1 is consistent with 8 internal diameter of circular waveguide, is provided with circular hole two on 7 top broadside central axis of rectangular waveguide for waveguide 8
12, center conductor 9 described in 2 12 diameter of circular hole (general big 0.02~0.05mm) more bigger than center conductor 9 is inserted vertically into circular hole
It in 2 12 and protrudes into inside circular waveguide 8, the circular hole 1, circular hole 2 12, circular waveguide 8 and center conductor 9 are in Vertical Square
Upwards with one heart.As shown in figure 5, the mechanical tuning device 10 includes metal plate 13 and metal pull bar 14, the metal plate 13
It is embedded into rectangular waveguide 7 from the left end of rectangular waveguide 7, metal plate 13 and 7 inner wall clearance fit of rectangular waveguide, the metal
One end of pull rod 14 is fixed on metal plate 13, by pulling metal pull bar 14 to move metal plate 13 in rectangular waveguide 7.Gold
Belong to the inner section size (general small 0.01~0.03mm) for being dimensioned slightly smaller than rectangular waveguide 7 of plate 13, the center of metal plate 13 is solid
A fixed metal pull bar 14 facilitates the axial direction along rectangular waveguide 7 to be moved forward and backward certain distance, is used for impedance matching, reduces
System standing-wave ratio reduces reflection power.
The top of the center conductor 9 is cylindrical body, and lower part is cone, and center conductor is added by metal tungsten material
Made of work.
As shown in Figure 6,7, the test cavity 5 includes shielding box 15, and center is provided with circular hole on shielding box 15
3 16, circular hole 3 16 is connected with the lower end of circular waveguide 8, and the diameter of circular hole 3 16 is consistent with the internal diameter of circular waveguide 8, circular hole 3 16 with
With one heart, the lower end of the center conductor 9 passes through circular waveguide 8 to circular waveguide 8 and circular hole 3 16 enters in shielding box 15, in shielding box
15 side is provided with circular hole 4 17, and circular hole 4 17 is connect with observation tube 18, the internal diameter of observation tube 18 and the diameter one of circular hole 4 17
Cause, observation tube 18 and circular hole 4 17 are concentric, the two internal diameter slightly larger than endoscope 19 probe diameter, by endoscope in experimentation
19 probe is inserted into observation tube 18, but does not go deep into inside shielding box 15, micro- when being much smaller than work due to the internal diameter of observation tube 18
Wave wavelength, thus the microwave energy in experimentation into observation tube is ignored, and will not be had an impact to endoscope 19.
The rectangular waveguide 7 uses BJ22 standard waveguide, inner section broadside having a size of 109.2mm, narrow side having a size of
54.6mm。
Each equipment is connected as shown in Figure 1, is opened microwave source 1, is maintained certain output power, two to three kilowatts are advisable,
According to the reflection power that directional coupler 3 obtains, the metal pull bar of mechanical tuning device is adjusted using electric cylinder, is made in Transmission system
Reflection power is in reduced levels, and most of incident power acts on object rock by coaxial line at this time, before center conductor
End can generate localized regions of elevated temperature, at this moment softening, fusing periphery rock are gradually goed deep into rock using electric cylinder driving center conductor
The rock in portion, melting can overflow rock surface along the edge of center conductor, and therefore drilling is formed, the depth of drilling can pass through
Electric cylinder setting.
Claims (5)
1. it is a kind of using microwave carry out rock-boring research experimental provision, it is characterised in that: include microwave source, circulator,
Directional coupler, waveguide coaxial connecter and test cavity, microwave source are sequentially connected circulator, directional coupler, Waveguide coaxial and turn
Coaxial line one end of the one end changed, waveguide coaxial connecter is connect with test cavity, and object rock is placed on test inside cavity, micro-
Wave source exports microwave power, and microwave power successively passes through circulator, directional coupler, is carried out by directional coupler to microwave power
Sampling measures incident and reflection power size, and microwave power is same by waveguide to waveguide coaxial connecter in directional coupler
By microwave power to coaxial line, the microwave power in coaxial line is finally transmitted to test cavity for axis conversion, and acts on pair
As rock.
2. a kind of experimental provision for carrying out rock-boring research using microwave according to claim 1, it is characterised in that: institute
The waveguide coaxial connecter stated includes rectangular waveguide, circular waveguide, center conductor, mechanical tuning device and flange, and the flange is solid
It is scheduled on the right end of rectangular waveguide, waveguide coaxial connecter is connect by flange with directional coupler, under the rectangular waveguide
Circular hole one is provided on the broadside central axis of side, the upper end of circular waveguide is connect with circular hole one, and circular hole one and circular waveguide are concentric, circular hole one
It is consistent with circular waveguide internal diameter, circular hole two is provided on the broadside central axis of rectangular waveguide top, the center conductor is inserted vertically
Enter in circular hole two and protrude into inside circular waveguide, the circular hole one, circular hole two, circular waveguide and center conductor are in vertical direction
With one heart, the mechanical tuning device includes metal plate and metal pull bar, and the metal plate is embedded into from the left end of rectangular waveguide
In rectangular waveguide, metal plate and rectangular waveguide inner wall clearance fit, one end of the metal pull bar is fixed on a metal plate, leads to
Crossing pulling metal pull bar moves metal plate in rectangular waveguide.
3. a kind of experimental provision for carrying out rock-boring research using microwave according to claim 2, it is characterised in that: institute
The top for the center conductor stated is cylindrical body, and lower part is cone, and center conductor is process by metal tungsten material.
4. a kind of experimental provision for carrying out rock-boring research using microwave according to claim 2, it is characterised in that: institute
The test cavity stated includes shielding box, and center is provided with circular hole three on shielding box, and circular hole three is connected with the lower end of circular waveguide,
The diameter of circular hole three and the internal diameter of circular waveguide are consistent, and circular hole three and circular waveguide are concentric, and the lower end of the center conductor passes through circle
Waveguide and circular hole three enter in shielding box, are provided with circular hole four in the side of shielding box, and observation tube, observation tube are equipped in circular hole four
Internal diameter it is consistent with the diameter of circular hole four, observation tube and circular hole four are concentric.
5. a kind of experimental provision for carrying out rock-boring research using microwave according to claim 2, it is characterised in that: institute
The rectangular waveguide stated uses BJ22 standard waveguide, and inner section broadside is having a size of 109.2mm, and narrow side is having a size of 54.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810693270.3A CN108931538A (en) | 2018-06-29 | 2018-06-29 | A kind of experimental provision for carrying out rock-boring research using microwave |
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| CN201810693270.3A CN108931538A (en) | 2018-06-29 | 2018-06-29 | A kind of experimental provision for carrying out rock-boring research using microwave |
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| CN108931538A true CN108931538A (en) | 2018-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239165A (en) * | 2020-01-22 | 2020-06-05 | 西北核技术研究院 | Antenna surface material high power impulse response testing arrangement |
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Application publication date: 20181204 |
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