CN105319274A - Water cooler heat exchange tube torsional mode guided wave sensor - Google Patents
Water cooler heat exchange tube torsional mode guided wave sensor Download PDFInfo
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- CN105319274A CN105319274A CN201510648676.6A CN201510648676A CN105319274A CN 105319274 A CN105319274 A CN 105319274A CN 201510648676 A CN201510648676 A CN 201510648676A CN 105319274 A CN105319274 A CN 105319274A
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- heat exchanger
- exchanger tube
- guided wave
- water cooler
- shell
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Abstract
A water cooler heat exchange tube torsional mode guided wave sensor comprises a top shell and a tubular shell fixedly connected to the bottom of the top shell, wherein a T-shaped structure is formed by the top shell and the tubular shell, and three aerial sockets used for being connected with an external power supply, receiving external excitation signals and outputting signals to the outside are arranged in the top shell. The water cooler heat exchange tube torsional mode guided wave sensor is also provided with a carbon brush used for forming a conducting circuit with a heat exchanger tube to be tested after a power supply is switched on, and a magnet used for making the carbon brush make close contact with a heat exchanger tube plate. A magnetic field generating device connected with connecting leads of the three aerial sockets, used for being inserted into the heat exchanger tube to be tested to generate an axial alternating magnetic field acting on the heat exchanger tube to be tested, and also used for forming a conducting circuit together with the carbon brush and the heat exchanger tube to be tested so as to make the heat exchanger tube to be tested generate a circumferential magnetic field is arranged in the tubular shell. According to the sensor, efficient testing of the heat exchange tube can be achieved without movement, the signal-to-noise ratio of a detection signal is increased, installation is convenient, and the sensor is suitable for field testing.
Description
Technical field
The present invention relates to a kind of sensor.Particularly relate to a kind of water cooler heat exchanger tube torsion mode guided wave sensor detected for heat exchanger tube.
Background technology
Heat interchanger is the common apparatus of chemical industry, oil, food and other many industrial sector, occupies critical role aborning.Heat exchanger tube, as the medium of two kinds of heat interchange materials, is the vitals of heat interchanger.Because heat exchanger tube washes away by material, to cavitate and corrosion factor etc. affects, Long-Time Service there will be the common deficiencies such as trommel, stress corrosion, spot corrosion, brings hidden danger to product quality and production safety.At present, be applied to the method that heat exchanger tube detects to mainly contain: rotary ultrasonic method, leakage method, eddy-current method etc., said method all needs sensor to pass heat exchanger tube, there is the low and high deficiency of heat exchanging inside pipe wall cleaning requirement of detection efficiency.Supersonic guide-wave detects owing to having the long distance of single-point-excitation, can realize homogeneous tube detect in tube end excitation.The method has the advantages such as detection speed is fast, cleaning requirement is low, starts to be applied to heat exchanger tube and detects.
The patent of invention of number of patent application CN200480038549.4 discloses a kind of contact torsional wave detection method for heat exchanger tube and system, sensor motivates torsion mode guided wave at pipeline external, guided wave is coupled in heat exchanger tube through waveguide probe, the method need waveguide probe and heat exchanger tube inwall physical contact good, therefore want heat exchanging inside pipe wall to carry out grinding process, reduce detection efficiency.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of water cooler heat exchanger tube torsion mode guided wave sensor that can realize non-contact detection.
The technical solution adopted in the present invention is: a kind of water cooler heat exchanger tube torsion mode guided wave sensor, include top shell and be fixedly connected on the tubular shell bottom top shell, described top shell and tubular shell form T-type structure, wherein, be provided with in described top shell and be respectively used to connect external power source, for receiving external drive signal, for three aviation sockets externally outputed signal, also be provided with for when switching on power and tested Tube Sheet of Heat Exchanger form the carbon brush of galvanic circle, and for making the magnet of carbon brush and heat exchanger tube sheet close contact, be provided with in described tubular shell to be connected with the connection wire of described three aviation sockets for insert in tested Tube Sheet of Heat Exchanger produce the axial alternating magnetic field that acts on tested Tube Sheet of Heat Exchanger with for forming galvanic circle with tested Tube Sheet of Heat Exchanger thus make tested Tube Sheet of Heat Exchanger produce the magnetic field generation device of Circumferential field together with carbon brush.
The top inner side of described tubular shell is fixedly installed the first connector by screw, and the top of described tubular shell is the bottom being fixedly connected on top shell by the first connector.
Described top shell includes inner ring housing and is integrally formed in the outer ring housing in outside of inner ring housing, and for closing the end cap being made up of top shell inner ring housing and outer ring housing, three described aviation sockets are fixed on end cap, and, the one end of the jack that three aviation sockets have for being connected with external unit or power supply is positioned at the outside of end cap, there is the one end connecting wire and be positioned at inner ring housing, the bottom that the connection wire of described three aviation sockets runs through inner ring housing connects the magnetic field generation device being positioned at tubular shell, described magnet and carbon brush is equally spaced is arranged in the housing of outer ring, wherein said carbon brush and the power supply of the aviation socket for being connected external power source connect wire and are connected.
Described magnet is fixedly installed in the housing of described outer ring by tightening piece.
Described carbon brush is positioned in the housing of described outer ring by screw and the spring be enclosed within screw, and be pressed on heat exchanger tube sheet on the surface.
Described magnetic field generation device includes and is positioned at described tubular shell and upper end is inserted into the tubular inner casing of the first connector of tubular shell upper end, the lower end of described tubular inner casing is fixed in tubular shell by the second connector, the arranged outside of described tubular inner casing has the first field shaper and the second field shaper, and be enclosed within the first AC coil outside the first field shaper and be enclosed within the second AC coil outside the second field shaper, wherein, the two ends correspondence of described first AC coil connects for receiving external drive signal or the connection wire of aviation socket for externally outputing signal, two terminations correspondence of described second AC coil connects and is used for externally outputing signal or for the connection wire of the aviation socket that receives external drive signal, the lower end of described tubular inner casing is connected with by internal thread and connects the connected conduction steel brush of wire with the power supply of the described aviation socket for being connected external power source, the brush of described conduction steel brush contacts with tested Tube Sheet of Heat Exchanger.
On outside the tube wall that the first described field shaper and the second field shaper are fixed by screws in described tubular inner casing.
The through hole be interlinked to the outside in the tube wall of described tubular inner casing is formed, described first AC coil and two terminations of the second AC coil run through respectively described through hole corresponding be inserted in tubular inner casing described in for receiving external drive signal or being connected for the connection wire of the aviation socket externally outputed signal.
Water cooler heat exchanger tube torsion mode guided wave sensor of the present invention, is adsorbed on heat exchanger tube sheet surface by magnet by sensor, carbon brush by spring compression and with heat exchanger tube sheet close contact, ensure good contact and whole sensor played to the effect of support.For ensureing the contact of carbon brush and tube sheet, spring device being set, ensureing carbon brush and tube sheet close contact.In heat exchanger tube, pass to direct current and form Circumferential field, the axial magnetic field formed with AC coil interacts, and realizes excitation and the reception of torsion mode guided wave.Utilize the poly-magnetic effect of high permeability material, the high permeability material arranged between AC coil and inner casing has congregation to alternating magnetic field, thus improves the signal to noise ratio (S/N ratio) of detection signal.Sensor of the present invention can realize the efficient detection of exchanging heat pipe without the need to movement, simultaneously easy for installation, is applicable to Site Detection.
Accompanying drawing explanation
Fig. 1 is the inner structure schematic diagram of water cooler heat exchanger tube torsion mode guided wave sensor of the present invention;
Fig. 2 is the end cover structure schematic diagram of water cooler heat exchanger tube torsion mode guided wave sensor of the present invention.
In figure
1: end cap 2: top shell
21: inner ring housing 22: outer ring housing
3: three aviation sockets 4: tightening piece
5: magnet 6: tubular shell
7: tubular inner casing 8: the first AC coil
9: the first field shaper 10: the second AC coil
11: the second field shapers 12: conduction steel brush
13: the first connectors 14: connect wire
15: carbon brush 16: spring
17: screw 18: tested Tube Sheet of Heat Exchanger
19: the second connectors 20: through hole
Embodiment
Below in conjunction with embodiment and accompanying drawing, water cooler heat exchanger tube torsion mode guided wave sensor of the present invention is described in detail.
Water cooler heat exchanger tube torsion mode guided wave sensor of the present invention, the tubular shell 6 including top shell 2 and be fixedly connected on bottom top shell 2, the top inner side of described tubular shell 6 is fixedly installed the first connector 13 by screw, and the top of described tubular shell 6 is the bottoms being fixedly connected on top shell 2 by the first connector 13.Described top shell 2 and tubular shell 6 form T-type structure, wherein, be provided with in described top shell 2 and be respectively used to connect external power source, for receiving external drive signal, for three aviation sockets 3 externally outputed signal, also be provided with for when switching on power and tested Tube Sheet of Heat Exchanger 18 form the carbon brush 15 of galvanic circle, and for making the magnet 5 of carbon brush 15 and heat exchanger tube sheet close contact, be provided with in described tubular shell 6 to be connected with the connection wire 14 of described three aviation sockets 3 for insert in tested Tube Sheet of Heat Exchanger 18 produce the axial alternating magnetic field that acts on tested Tube Sheet of Heat Exchanger 18 with for forming galvanic circle with tested Tube Sheet of Heat Exchanger 18 thus make tested Tube Sheet of Heat Exchanger 18 produce the magnetic field generation device of Circumferential field together with carbon brush 15.
Described top shell 2 includes inner ring housing 21 and is integrally formed in the outer ring housing 22 in outside of inner ring housing 21, and for closing the end cap 1 being made up of top shell 2 inner ring housing 21 and outer ring housing 22, three described aviation sockets 3 are fixed on end cap 1, and, the one end of the jack that three aviation sockets 3 have for being connected with external unit or power supply is positioned at the outside of end cap 1, there is the one end connecting wire 14 and be positioned at inner ring housing 21, the bottom that the connection wire 14 of described three aviation sockets 3 runs through inner ring housing 21 connects the magnetic field generation device being positioned at tubular shell 6, described magnet 5 and carbon brush 15 is equally spaced is arranged in outer ring housing 22, wherein said magnet 5 is fixedly installed in described outer ring housing 22 by tightening piece 4, and be adsorbed on heat exchanger tube sheet surface, ensure good contact and whole sensor is played a supportive role.Described carbon brush 15 is positioned in described outer ring housing 22 by screw 17 and the spring 16 be enclosed within screw 17, and be pressed on heat exchanger tube sheet on the surface, both guarantees close contact.Described carbon brush 15 and the power supply of the aviation socket 3 for being connected external power source connect wire and are connected.
Described magnetic field generation device includes and is positioned at described tubular shell 6 and upper end is inserted into the tubular inner casing 7 of the first connector 13 of tubular shell 6 upper end, the lower end of described tubular inner casing 7 is fixed in tubular shell 6 by the second connector 19, the arranged outside of described tubular inner casing 7 has the first field shaper 9 and the second field shaper 11, and the first AC coil 8 be enclosed within outside the first field shaper 9 and the second AC coil 10 be enclosed within outside the second field shaper 11, wherein, on outside the tube wall that the first described field shaper 9 and the second field shaper 11 are fixed by screws in described tubular inner casing 7.The two ends correspondence of described first AC coil 8 connects for receiving external drive signal or the connection wire of aviation socket 3 for externally outputing signal, two terminations correspondence of described second AC coil 10 connects and is used for externally outputing signal or for the connection wire of the aviation socket 3 that receives external drive signal, the through hole 20 be interlinked to the outside in the tube wall of described tubular inner casing 7 is formed, described first AC coil 8 and two terminations of the second AC coil 10 run through described through hole 20 correspondence respectively be inserted in tubular inner casing 7 described in for receiving external drive signal or being connected for the connection wire of the aviation socket 3 externally outputed signal.First AC coil 8, second AC coil 10 with for receiving external drive signal and can realizing respectively being electrically connected between the aviation socket 3 that externally outputs signal.
The lower end of described tubular inner casing 7 is connected with by internal thread and connects the connected conduction steel brush 12 of wire with the power supply of the described aviation socket 3 for being connected external power source, and the brush of described conduction steel brush 12 contacts with tested Tube Sheet of Heat Exchanger 18.The described aviation socket external direct current power supply for connecting external power source, one end connects conduction steel brush, and the other end connects carbon brush, can form direct supply, conduction steel brush, tube sheet, heat exchanger tube and carbon brush form DC loop.
In the present invention, described top shell 2, tubular shell 6 and tubular inner casing 7 are made by insulating material.The first described field shaper 9 and the second field shaper 11 are made up of high-permeability material.
Water cooler heat exchanger tube torsion mode guided wave sensor of the present invention, adsorbs with magnet and heat exchanger tube sheet, ensures good contact and whole sensor is played to the effect of support; Simultaneously for ensureing the contact of carbon brush and tube sheet, arrange spring device, guarantee carbon brush and tube sheet close contact, achieve non-contact detection, by magnet, sensor be adsorbed on heat exchanger tube sheet surface, carbon brush by spring compression and with heat exchanger tube sheet close contact.Utilize the poly-magnetic effect of high permeability material, the high permeability material arranged between AC coil and inner casing has congregation to alternating magnetic field, in Tube Sheet of Heat Exchanger, pass to direct current and form Circumferential field, the axial magnetic field formed with AC coil interacts, and realizes excitation and the reception of torsion mode guided wave.Sensor can realize the efficient detection of exchanging heat pipe without the need to movement, simultaneously easy for installation, is applicable to Site Detection.
Water cooler heat exchanger tube torsion mode guided wave sensor of the present invention, during detection, the magnet 5 in top shell 2 is adsorbed on heat exchanger tube sheet, and carbon brush 15 is held out against by spring 16, with heat exchanger tube sheet close contact; Meanwhile, conduction steel brush 12 and tested Tube Sheet of Heat Exchanger 18 close contact is guaranteed.Outer computer produces pulse signal by control signal generator, by being input in the first AC coil 8 or the second AC coil for the aviation socket 3 receiving external drive signal after power amplification, produce the axial alternating magnetic field acting on tested Tube Sheet of Heat Exchanger 18 thus.Direct supply is by the aviation socket 3 for connecting external power source, and one end is connected to conduction steel brush 12, and the other end is connected to carbon brush 15.Thus, direct supply, conduction steel brush 12, heat exchanger tube sheet, tested Tube Sheet of Heat Exchanger 18 and carbon brush 15 form DC loop, and then produce Circumferential field in tested Tube Sheet of Heat Exchanger 18.
Under the acting in conjunction of above-mentioned alternating magnetic field and Circumferential field, in tested Tube Sheet of Heat Exchanger 18, produce the elastic wave of torsion mode, this elastic wave when through the second AC coil 10 or the first AC coil 8, because counter magnetostriction effect is converted into electric signal.Electric signal is by outwards exporting for the aviation socket 3 externally outputed signal.This electric signal enters the signal gathering unit of computing machine after external signal treatment circuit and A/D conversion circuit, and then carries out analyzing and processing to signal, completes whole testing process.
Water cooler heat exchanger tube torsion mode guided wave sensor of the present invention, considers and uses magnet 5 and heat exchanger tube sheet to adsorb, ensure good contact and play a supporting role to whole sensor.Adopt spring device simultaneously, utilize the elastic force of spring to be pressed on tube sheet by carbon brush 15, ensure close contact.
For further optimization, ensure the stable equilibrium of whole sensor performance, the present invention arranges three carbon brush 15 on top shell 2, the impact that heat exchanger tube sheet surface condition contacts carbon brush 15 can be avoided like this, all the time ensure a carbon brush 15 and heat exchanger tube sheet intimate surface contact, guarantee carrying out smoothly of testing process.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should comprise within the scope of the present invention.
Claims (8)
1. a water cooler heat exchanger tube torsion mode guided wave sensor, include top shell (2) and be fixedly connected on the tubular shell (6) bottom top shell (2), it is characterized in that, described top shell (2) and tubular shell (6) form T-type structure, wherein, be provided with in described top shell (2) and be respectively used to connect external power source, for receiving external drive signal, for three aviation sockets (3) externally outputed signal, also be provided with for when switching on power and tested Tube Sheet of Heat Exchanger (18) form the carbon brush (15) of galvanic circle, and for making the magnet (5) of carbon brush (15) and heat exchanger tube sheet close contact, be provided with in described tubular shell (6) to be connected with the connection wire (14) of described three aviation sockets (3) for insert in tested Tube Sheet of Heat Exchanger (18) produce the axial alternating magnetic field that acts on tested Tube Sheet of Heat Exchanger (18) with for forming galvanic circle with tested Tube Sheet of Heat Exchanger (18) thus make tested Tube Sheet of Heat Exchanger (18) produce the magnetic field generation device of Circumferential field together with carbon brush (15).
2. water cooler heat exchanger tube torsion mode guided wave sensor according to claim 1, it is characterized in that, the top inner side of described tubular shell (6) is fixedly installed the first connector (13) by screw, and the top of described tubular shell (6) is the bottom being fixedly connected on top shell (2) by the first connector (13).
3. water cooler heat exchanger tube torsion mode guided wave sensor according to claim 1, it is characterized in that, described top shell (2) includes inner ring housing (21) and is integrally formed in the outer ring housing (22) in outside of inner ring housing (21), and for closing the end cap (1) being made up of top shell (2) inner ring housing (21) and outer ring housing (22), three described aviation sockets (3) are fixed on end cap (1), and, the one end of the jack that three aviation sockets (3) have for being connected with external unit or power supply is positioned at the outside of end cap (1), the one end with connection wire (14) is positioned at inner ring housing (21), the bottom that the connection wire (14) of described three aviation sockets (3) runs through inner ring housing (21) connects the magnetic field generation device being positioned at tubular shell (6), described magnet (5) and carbon brush (15) is equally spaced is arranged in outer ring housing (22), wherein said carbon brush (15) and the power supply of the aviation socket (3) for being connected external power source connect wire and are connected.
4. water cooler heat exchanger tube torsion mode guided wave sensor according to claim 3, is characterized in that, described magnet (5) is fixedly installed in described outer ring housing (22) by tightening piece (4).
5. water cooler heat exchanger tube torsion mode guided wave sensor according to claim 3, it is characterized in that, described carbon brush (15) is positioned in described outer ring housing (22) by screw (17) and the spring (16) be enclosed within screw (17), and be pressed on heat exchanger tube sheet on the surface.
6. water cooler heat exchanger tube torsion mode guided wave sensor according to claim 1, it is characterized in that, described magnetic field generation device includes and is positioned at described tubular shell (6) and upper end is inserted into the tubular inner casing (7) of first connector (13) of tubular shell (6) upper end, the lower end of described tubular inner casing (7) is fixed in tubular shell (6) by the second connector (19), the arranged outside of described tubular inner casing (7) has the first field shaper (9) and the second field shaper (11), and be enclosed within first AC coil (8) in the first field shaper (9) outside and be enclosed within second AC coil (10) in the second field shaper (11) outside, wherein, the two ends correspondence of described first AC coil (8) connects for receiving external drive signal or the connection wire of aviation socket (3) for externally outputing signal, two terminations correspondence of described second AC coil (10) connects and is used for externally outputing signal or for the connection wire of the aviation socket (3) that receives external drive signal, the lower end of described tubular inner casing (7) is connected with by internal thread and connects the connected conduction steel brush (12) of wire with the power supply of the described aviation socket (3) for being connected external power source, the brush of described conduction steel brush (12) contacts with tested Tube Sheet of Heat Exchanger (18).
7. water cooler heat exchanger tube torsion mode guided wave sensor according to claim 6, it is characterized in that, on outside the tube wall that described the first field shaper (9) and the second field shaper (11) are fixed by screws in described tubular inner casing (7).
8. water cooler heat exchanger tube torsion mode guided wave sensor according to claim 6, it is characterized in that, the through hole (20) be interlinked to the outside in the tube wall of described tubular inner casing (7) is formed, described first AC coil (8) and two terminations of the second AC coil (10) run through respectively described through hole (20) corresponding with to be inserted in tubular inner casing (7) described for receiving external drive signal or being connected for the connection wire of the aviation socket (3) externally outputed signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510648676.6A CN105319274A (en) | 2015-10-09 | 2015-10-09 | Water cooler heat exchange tube torsional mode guided wave sensor |
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| CN201510648676.6A CN105319274A (en) | 2015-10-09 | 2015-10-09 | Water cooler heat exchange tube torsional mode guided wave sensor |
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| CN105319274A true CN105319274A (en) | 2016-02-10 |
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| CN201510648676.6A Pending CN105319274A (en) | 2015-10-09 | 2015-10-09 | Water cooler heat exchange tube torsional mode guided wave sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112170151A (en) * | 2020-09-15 | 2021-01-05 | 清华大学 | Giant magnetostrictive ultrasonic transducer, single-excitation giant magnetostrictive ultrasonic elliptical vibration tool shank and ultrasonic machining system |
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| CN112170151A (en) * | 2020-09-15 | 2021-01-05 | 清华大学 | Giant magnetostrictive ultrasonic transducer, single-excitation giant magnetostrictive ultrasonic elliptical vibration tool shank and ultrasonic machining system |
| CN112170151B (en) * | 2020-09-15 | 2021-09-07 | 清华大学 | Giant magnetostrictive ultrasonic transducer, single-excitation giant magnetostrictive ultrasonic elliptical vibration tool shank and ultrasonic machining system |
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