CN206930338U - A kind of Frozen Ground Area heat-pipe working medium liquid level sensor based on sound wave reflection - Google Patents
A kind of Frozen Ground Area heat-pipe working medium liquid level sensor based on sound wave reflection Download PDFInfo
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- CN206930338U CN206930338U CN201720873728.4U CN201720873728U CN206930338U CN 206930338 U CN206930338 U CN 206930338U CN 201720873728 U CN201720873728 U CN 201720873728U CN 206930338 U CN206930338 U CN 206930338U
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Abstract
A kind of Frozen Ground Area heat-pipe working medium liquid level sensor based on sound wave reflection is the utility model is related to, the detection means includes the acoustic emission mechanism for being located at heat pipe heat radiation section top（1）, be located at the acoustic receiver mechanism of heat pipe heat radiation section bottom（2）And data storage（8）；Acoustic emission mechanism（1）Launch the longitudinal sound wave propagated vertically downward in the inner space of heat pipe and the transverse sound wave for being reflected towards lower propagation back and forth on the tube wall of heat pipe；Acoustic receiver mechanism（2）Receive and identify the sound wave that through longitudinal sound wave and through transverse sound wave and longitudinal sound wave reflect via medium level and scattered upwards；Data storage（8）The data of record and preservation from transmitting-receiving mechanism, so as to later-stage utilization, these data calculate position of the medium level in heat pipe, and then judging whether heat pipe leaks, the utility model uses when heat pipe is stopped and remained static, and detection efficiency is high and has ensured the safety of technical staff.
Description
Technical field
It the utility model is related to frozen soil engineering testing techniques of equipment field, more particularly to a kind of frozen soil based on sound wave reflection
Regional heat-pipe working medium liquid level sensor.
Background technology
Frozen soil refers to there is subzero temperature and the soil body and rock containing ice, and China's frozen soil area is mainly distributed on Qinghai-Tibet Platean, east
The area such as northern Xing'anling mountains and Tianshan Mountains, Altai Mountains.With the continuous quickening of national economic development, these Special sections exist
Constantly build various means of transportation, such as national major project of Qinghai-Tibet Highway, Qinghai-Tibet Railway.
Due to the presence of ever-frozen ground and Thick Underground Ice so that Permafrost Area transmission line of electricity column foot stability of foundation has
There is great uncertainty：With the change of external environment, in frozen soil the thawing of ice body can cause the rapid deterioration of column foot foundation,
Safe operation and long-time stability to column foot produce material impact.To avoid this kind from influenceing, it will usually laid around column foot
A number of heat pipe is so as to safeguarding the stability of column foot.
A kind of vapour of heat pipe, the heat-conducting system of liquid two-phase convection circulation, it is the steel pipe of a sealing vacuum, and the inside is filled with
The liquid and gaseous working medium of highly volatile（Such as nitrogen, freon, propane, CO2）, upper end is the gelled radiating of installation
Section, lower end is endotherm section.Using when, frozen soil that the insertion of the endotherm section of heat pipe is needed to cool.In the winter time when environment temperature dissipates
When the temperature of hot arc is less than underground endotherm section temperature, heat pipe is started working and is in heat conduction state, by the heat in foundation soil
Constantly distribute and cool down the soil body.
It can be seen that heat pipe is making, any slight flaws during installation and use or impaired can all cause internal working medium
Leakage, and then the task performance for influenceing heat pipe is even scrapped.Therefore, detect whether heat pipe working condition is normally an important work
Make.Existing detection means is generally all to gather temperature, the floor data such as hot-fluid that heat pipe is under heat conduction state, and then according to
These floor datas judge whether heat pipe is abnormal.Based on this, the utility model looks for another way, and proposition is a kind of to work without heat pipe
The whether abnormal new tool of heat pipe can be judged.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Frozen Ground Area heat-pipe working medium based on sound wave reflection
Liquid level sensor, the collection of opposite heat tube medium level location dependent data is realized, provided to judge whether heat pipe occurs leakage
Foundation.
The primary condition of heat pipe work is to fill the work working medium for phase transformation, diabatic process at the internal vacuum condition.
If because a variety of causes causes scattering and disappearing for volatile working medium, heat pipe can not then work.So, the working medium liquid of inside heat pipe is detected
Amount number be an effective detection approach.
To solve existing issue, a kind of Frozen Ground Area heat-pipe working medium liquid level based on sound wave reflection described in the utility model
Detection means, it is characterised in that：The detection means includes being located at the acoustic emission mechanism on heat pipe heat radiation section top, is located at the heat
The acoustic receiver mechanism of pipe radiating segment bottom and the data storage being connected with both of which；
The acoustic emission mechanism is used to launch the longitudinal sound wave propagated vertically downward in the inner space of the heat pipe
With the transverse sound wave for being reflected towards lower propagation back and forth on the tube wall of the heat pipe, and by the related data of launched sound wave transmit to
The data storage；The longitudinal sound wave is identical with the frequency of the transverse sound wave；
The acoustic receiver mechanism is used to receiving and identifying through longitudinal sound wave and through transverse sound wave and described
The sound wave that longitudinal sound wave reflects via medium level and scattered upwards, and the related data of received sound wave is transmitted to the number
According to memory；
The data storage is used to record and preserve from the acoustic emission mechanism and the acoustic receiver mechanism
Data, so that technical staff takes out and is analyzed it to obtain the particular location of medium level in the heat pipe；
Wherein, the related data of the transmitting sound wave comprises at least category identities and the launch time of each transmitting sound wave, institute
State category identities and reception time of the related data for receiving sound wave including at least each reception sound wave.
Preferably, the acoustic emission mechanism including the use of when back-off in the U-shaped hollow outer of the heat pipe heat radiation section top
Shell, the longitudinal sound wave transmitter being located on the upside of the enclosure and the transverse sound wave for being symmetrically arranged at the enclosure both sides
Transmitter；Heat pipe heat radiation section top described in the emitting head face of the longitudinal sound wave transmitter, the transverse sound wave transmitter
The tube wall of emitting head and the heat pipe is in a certain angle, and the angle is more than 0 ° and is less than 90 °；The longitudinal sound wave transmitter and described
Transverse sound wave transmitter transmits respective related data to the data storage.
Preferably, the longitudinal sound wave transmitter and the transverse sound wave transmitter are frequency conversion pinger.
Preferably, the acoustic receiver mechanism includes the acoustic receiver layer of ring-type and is located on the inside of the acoustic receiver layer simultaneously
Prominent acoustic receiver post；Wherein, the acoustic receiver post is used to receive through longitudinal sound wave and its anti-via medium level
Sound wave on directive simultaneously transmits related data to the data storage；The acoustic receiver layer is used to receive through transverse direction
Sound wave simultaneously transmits related data to the data storage.
Preferably, the acoustic receiver mechanism, which also includes enclosing, is located at the anti-interference of on the outside of the acoustic receiver layer and upside
Layer.
Preferably, the acoustic receiver layer of the ring-type and the anti-interference layer are the knot that two semicircles combine
Structure.
Preferably, can mutually be replaced between the longitudinal sound wave and the transverse sound wave.
The utility model has advantages below compared with prior art：
1st, in the utility model acoustic emission mechanism heat pipe top-emission longitudinal sound wave in inside heat pipe space it is straight
Downward propagation is connect, transverse sound wave makes it be reflected towards lower propagation back and forth on the tube wall of heat pipe due to certain angle be present during transmitting,
Both frequency of sound wave are identical, and acoustic receiver mechanism receives and identifies through longitudinal sound wave and through transverse sound wave and indulged
The sound wave for reflecting via medium level to sound wave and scattering upwards, the transmitting-receiving time of later-stage utilization sound wave and the hair of transverse sound wave
The data such as firing angle degree, heat pipe diameter can calculate position of the medium level in heat pipe, be demarcated when it is dispatched from the factory with producer
Working medium position is contrasted, and judges whether heat pipe leaks and judge the working condition of heat pipe.
2nd, the utility model is used when heat pipe is stopped and remained static, and it can be carried out without heat pipe work
Check, can be detected in daytime or the weather relatively good time, detection efficiency is high and has ensured the safety of technical staff.
3rd, acoustic receiver post and acoustic receiver are further comprised based on above-mentioned advantage, the utility model acoustic receiver mechanism
Layer, raised acoustic receiver post are responsible for the sound wave for receiving through longitudinal sound wave and its being reflected towards via medium level, sound wave
Receiving layer is responsible for receiving through transverse sound wave, i.e., sound wave separately receives in length and breadth, ensure that the degree of accuracy of detection data.In addition,
The anti-interference layer of half parcel form is additionally provided with acoustic receiver layer, the acoustic signals for ensureing to receive only are from heat pipe, so as to
Interference signal is avoided, further ensures the degree of accuracy of detection data.
Brief description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the utility model relative position schematic diagram with tested heat pipe when in use.
Fig. 2 is the cross section dimensional structure diagram of Tu1Zhong acoustic emissions mechanism 1.
Fig. 3 is the schematic longitudinal section of Tu1Zhong acoustic receivers mechanism 2.
In figure：1-acoustic emission mechanism, 2-acoustic receiver mechanism, 3-longitudinal sound wave transmitter, 4-transverse sound wave hair
Emitter（4）, 5-acoustic receiver post, 6-acoustic receiver layer, 7-anti-interference layer, 8-data storage.
Embodiment
A kind of as shown in figure 1, Frozen Ground Area heat-pipe working medium liquid level sensor based on sound wave reflection（Hereinafter referred to as detect
Device）, the detection means specifically includes acoustic emission mechanism 1, acoustic receiver mechanism 2 and the data that are connected with both of which and deposits
Reservoir 8, data storage 8 are used to recording and preserving the data from acoustic emission mechanism 1 and sonic receiver structure 2（That is working medium
The location dependent data of liquid level）, so that technical staff takes out and is analyzed to obtain the specific position of medium level in heat pipe to it
Put.
In use, acoustic emission mechanism 1 is located at heat pipe heat radiation section top, it can launch hangs down in the inner space of heat pipe
The straight longitudinal sound wave propagated downwards and the transverse sound wave for being reflected towards lower propagation back and forth on the tube wall of heat pipe, and by launched sound wave
Related data transmit to data storage 8；Wherein, longitudinal sound wave is identical with the frequency of transverse sound wave, passes through the transverse and longitudinal of sound wave
Make a distinction.Sound wave vertically downward can produce reflection in medium level, produce echo；Due to certain angle be present during transmitting
（It is less than 90 ° more than 0 °）, transverse sound wave can roundtrip propagation on the heat pipe walls.
It is understood that above-mentioned longitudinal sound wave and transverse sound wave can be exchanged, that is to say, that acoustic emission mechanism 1 is sent out
The sound wave propagated vertically downward penetrated can be lateral wave, and correspondingly, the sound wave that the roundtrip of transmitting is propagated downwards is longitudinal direction
Ripple, certainly, acoustic receiver mechanism 2 here accordingly convert, and such conversion etc. belongs to the protection domain of the application.
Acoustic receiver mechanism 2 is sleeved on heat pipe heat radiation section bottom and is close to ground, and medium level position is usual in heat pipe
Ground is all less than, the setting of this landscape position, it is possible to prevente effectively from metal tube and echo caused by earth's surface contact position
Interference, acoustic receiver mechanism 2 can receive and identify through longitudinal sound wave and through transverse sound wave and longitudinal sound wave warp
The sound wave for being reflected by medium level and being scattered upwards, and the related data of received sound wave is transmitted to data storage 8.
Wherein, the related data for launching sound wave comprises at least the information such as category identities and the launch time of each transmitting sound wave,
The related data for receiving sound wave comprises at least the category identities of each reception sound wave and receives the information such as time, and category identities include horizontal stroke
Ripple and compressional wave, transverse and longitudinal ripple is distinguished for the later stage, the transmitting-receiving time is used for the propagation time for calculating each path in the later stage.
Due to inside heat pipe diameter, transverse sound wave launch angle, it is known that therefore can be connect by transverse sound wave from being transmitted into
The propagation path of receipts and time calculate spread speed of the transverse sound wave in heat pipe, because two kinds of frequency of sound wave of transverse and longitudinal are identical,
Spread speed of two kinds of sound waves in heat pipe is identical, so calculates longitudinal sound wave again and meets between working medium reflects from being transmitted into
Time, speed are multiplied the distance that can obtain at the top of medium level to heat pipe with the time.Furthermore it is possible to make two transmitting-receiving mechanisms it
Between timing it is in parallel synchronous, be easy to the later stage quick and precisely to calculate medium level position.
Further, with reference to figure 2, back-off is in heat pipe heat radiation section top when above-mentioned acoustic emission mechanism specifically includes use
U-shaped hollow shell, it is located on the upside of enclosure（The upside of inverted U）Longitudinal sound wave transmitter 3 and be symmetrically arranged in shell
The transverse sound wave transmitter 4 of portion both sides.It is understood that longitudinal sound wave transmitter 3 is used to launch longitudinal sound wave, its emitting head
At the top of positive opposite heat tube；Transverse sound wave transmitter 4 is used to launch transverse sound wave, and its emitting head has certain angle with heat pipe wall, should
Angle is more than 0 ° and is less than 90 °；Certainly, the two pingers all can be by respective data transfer to data storage 8.
In actual applications, longitudinal sound wave transmitter 3 and transverse sound wave transmitter 4 can be frequency conversion pinger,
The sound wave of any frequency range in 100 ~ 1000Hz can be sent；Repeated detection is carried out using the sound wave of different frequency, by multiple
The degree of accuracy for determining medium level position can be improved by detecting the comparison of data and analysis.
Further, with reference to figure 3, above-mentioned acoustic receiver mechanism 2 specifically includes the acoustic receiver layer 6 of ring-type and is located at sound wave
The inner side of receiving layer 6 and prominent acoustic receiver post 5, both are high sensitivity sonic sensor, can receive it is faint not
With the acoustic signals of frequency range, the acoustic signals that inside heat pipe outflow can be accurately detected on heat pipe outer wall are close to；Wherein,
Acoustic receiver post 5 is used to receive the sound wave that through longitudinal sound wave and the longitudinal sound wave are reflected towards via medium level and by phase
Data transfer is closed to data storage 8；Acoustic receiver layer 6 is used to receive through transverse sound wave and transmit related data to number
According to memory 8.
In addition, to avoid external sound from having an impact detection data, acoustic receiver mechanism 2 also includes enclosing being located at sound wave and connecing
The anti-interference layer 7 of the outside of layer 6 and upside is received, only exposes the inner side of acoustic receiver layer 6 and downside and the acoustic receiver post on the inside of it
5.The acoustic receiver layer 6 and anti-interference layer 7 of ring-type can be the structure that two semicircles combine, and conveniently be set in heat pipe
Outer wall.
Above-mentioned detection device when in use, will first be shaped as the U-shaped back-off of acoustic emission mechanism 1 in heat pipe top, ensure
It is in close contact with heat pipe, the sound wave that whole U-shape structure is sent is entered with as much as possible from heat pipe top；Then by two
The semicircular acoustic receiver mechanism 2 of branch, which combines, is tightly stuck in heat pipe outer wall, ensures that the acoustic receiver post 5 of innermost layer is close to
Fully contact, whole receiving mechanism is positioned on the ground of heat pipe heat radiation end bottom with it on heat pipe outer wall.Now regulation sound
The tranmitting frequency of two transmitters in wave transmitter structure 1, until acoustic receiver post 5 and sound wave receiving layer 6 can receive clearly
Untill stable acoustic signals；Detection means is allowed voluntarily to run, finally extracting data from data storage 8 carries out post analysis
.
It in summary it can be seen, in the utility model detection means, acoustic emission mechanism 1 employs the frequency conversion of vertical and horizontal
Pinger, the sound wave of different directions, different frequency can be sent, so as to ensure that sound wave can reach heat pipe along different paths
Medium level, and be reflected off reaching acoustic receiver mechanism 2；Acoustic receiver mechanism 2 uses two sets of receivers, and transverse and longitudinal wavelength-division, which is opened, to be connect
Receive, and employ jamproof half parcel form, only expose receiving layer most inner side and downside and acoustic receiver post 5, its remaining part
Position is wrapped up by jamproof acoustic material, and the acoustic signals for ensureing to receive only are from heat pipe, so as to avoid interference signal.This
The accuracy that a series of measures to detect data is ensured.
Claims (7)
- A kind of 1. Frozen Ground Area heat-pipe working medium liquid level sensor based on sound wave reflection, it is characterised in that：The detection means bag Include the acoustic emission mechanism for being located at heat pipe heat radiation section top（1）, be located at the acoustic receiver mechanism of the heat pipe heat radiation section bottom（2） And the data storage being connected with both of which（8）；The acoustic emission mechanism（1）For launch the longitudinal sound wave propagated vertically downward in the inner space of the heat pipe and It is reflected towards the transverse sound wave of lower propagation back and forth on the tube wall of the heat pipe, and the related data of launched sound wave is transmitted to institute State data storage（8）；The longitudinal sound wave is identical with the frequency of the transverse sound wave；The acoustic receiver mechanism（2）For receiving and identifying through longitudinal sound wave and through transverse sound wave and described vertical The sound wave for reflecting via medium level to sound wave and scattering upwards, and the related data of received sound wave is transmitted to the data Memory（8）；The data storage（8）For recording and preserving from the acoustic emission mechanism（1）With the acoustic receiver mechanism （2）Data, so as to technical staff take out and it is analyzed to obtain the particular location of medium level in the heat pipe；Wherein, the related data of the transmitting sound wave comprises at least category identities and the launch time of each transmitting sound wave, described to connect Quiet down ripple related data comprise at least it is each reception sound wave category identities and receive the time.
- 2. detection means as claimed in claim 1, it is characterised in that：The acoustic emission mechanism（1）Including the use of when back-off U-shaped hollow shell in the heat pipe heat radiation section top, the longitudinal sound wave transmitter being located on the upside of the enclosure（3）And It is symmetrically arranged at the transverse sound wave transmitter of the enclosure both sides（4）；The longitudinal sound wave transmitter（3）Emitting head face The heat pipe heat radiation section top, the transverse sound wave transmitter（4）Emitting head and the heat pipe tube wall it is in a certain angle, should Angle is more than 0 ° and is less than 90 °；The longitudinal sound wave transmitter（3）With the transverse sound wave transmitter（4）By respective dependency number According to transmitting to the data storage（8）.
- 3. detection means as claimed in claim 2, it is characterised in that：The longitudinal sound wave transmitter（3）With the horizontal sound Wave launcher（4）It is frequency conversion pinger.
- 4. detection means as claimed in claim 1, it is characterised in that：The acoustic receiver mechanism（2）Sound wave including ring-type Receiving layer（6）Be located at the acoustic receiver layer（6）Inner side and the acoustic receiver post of protrusion（5）；Wherein, the acoustic receiver post （5）For receiving through longitudinal sound wave and its sound wave being reflected towards via medium level and transmitting related data to described Data storage（8）；The acoustic receiver layer（6）For receiving through transverse sound wave and transmitting related data to the number According to memory（8）.
- 5. detection means as claimed in claim 4, it is characterised in that：The acoustic receiver mechanism（2）Also include enclosing being located at institute State acoustic receiver layer（6）Outside and the anti-interference layer of upside（7）.
- 6. detection means as claimed in claim 5, it is characterised in that：The acoustic receiver layer of the ring-type（6）With it is described anti-dry Disturb layer（7）It is the structure that two semicircles combine.
- 7. detection means as claimed in claim 1, it is characterised in that：Can between the longitudinal sound wave and the transverse sound wave Mutually replace.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340033A (en) * | 2017-07-19 | 2017-11-10 | 中国科学院寒区旱区环境与工程研究所 | A kind of Frozen Ground Area heat-pipe working medium liquid level sensor based on sound wave reflection |
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2017
- 2017-07-19 CN CN201720873728.4U patent/CN206930338U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340033A (en) * | 2017-07-19 | 2017-11-10 | 中国科学院寒区旱区环境与工程研究所 | A kind of Frozen Ground Area heat-pipe working medium liquid level sensor based on sound wave reflection |
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