CN110211715A - Pipeline fluid thermally stratified layer monitoring device - Google Patents
Pipeline fluid thermally stratified layer monitoring device Download PDFInfo
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- CN110211715A CN110211715A CN201910443919.0A CN201910443919A CN110211715A CN 110211715 A CN110211715 A CN 110211715A CN 201910443919 A CN201910443919 A CN 201910443919A CN 110211715 A CN110211715 A CN 110211715A
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- thermocouple
- pipeline
- monitoring device
- thermally stratified
- stratified layer
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Measuring Volume Flow (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a kind of pipeline fluid thermally stratified layer monitoring devices, including integrated thermocouple sensor, guide wire and circular band；The integrated thermocouple sensor successively includes connector, extends cable, encapsulating tube assembly and armoured thermocouple；The circular band includes the attachment base for fixing the guide wire lower end and the flexible-belt for being looped around on the outside of pipeline, and the armoured thermocouple passes through the guide wire and is fixed on the flexible-belt after being pierced by from the guide wire lower end.Pipeline fluid thermally stratified layer monitoring device of the invention, it is reasonable in design, combine by integrated thermocouple sensor, metal guide pipe, around band, form an organic whole, facilitate in-site installation and disassembly, it can be realized the measurement to pipeline radial fluid temperature gradient, ensure that the accuracy, precision and dynamic response of thermometric；Integrated thermocouple sensor is drawn by a multipair thermocouple extension cables, and ensure that the convenience and reliability connected between compensating cable by the way of connector.
Description
Technical field
The invention belongs to the tired monitoring technical fields of pipeline of nuclear power plant heat, and in particular to a kind of pipeline fluid thermally stratified layer monitoring dress
It sets.
Background technique
Thermally stratified layer (Thermal stratification) refers to that during media flow, hotter, lighter medium stops
The phenomenon that staying and flowed above colder, heavier medium, forming certain temperature gradient.Thermally stratified layer will cause pipeline due to expanding not
Bending stress and is in the axial direction generated, the circulation of Long-term bend stress eventually results in the heat fatigues phenomenon such as pipeline crack
Occur.
Worldwide series reaction reactor coolant pipeline and heat fatigue phase had occurred for PWR nuclear power plant at present
The event of pass, caused by being shown according to the research achievement of American Electric Power research institute (EPRI) because of thermally stratified layer pipeline heat fatigue into
And the event occurrence rate for causing pipeline breaking to be failed is in rising trend, therefore to the monitoring of pipeline thermally stratified layer for ensuring core
The safe operation of power plant is of great significance.To cope with pipeline heat fatigue phenomenon, need to take effective measures to there may be heat
The sensitive position of layering is monitored, temperature collection change of gradient numerical value, is mentioned for Thermal Fatigue Damage assessment and mitigation strategy formulation
For data support and technical basis.And being layered more feasible monitoring method to fluid thermal is to pipeline outer radial Temperature Distribution
Measurement, convert inner wall and fluid temperature (F.T.), to monitor the operating status of pipeline.
The prior art generallys use indirect mode and measures to pipeline outer wall, general between sensor and pipe surface
Can be across medium (such as steel band), but there are more drawbacks for this mode: (1) pipeline outer wall irregular circle, steel band encircle
After on pipeline, thermometric may be caused inaccurate between pipeline there are gap；(2) temperature sensor is across steel band to pipeline
Surface measures, and will lead to heat transfer lag, seriously affects the response of device overall dynamics；(3) in the quick change procedure of temperature,
Steel band will form filter effect, cause temp sensor device to can not capture the temperature change；(4) traditional technology generallys use
Single Zhi Chengpin thermocouple adds the mode of bracket, causes thermocouple quantity more, the materials such as cable connector and cable of required production
Dosage greatly increases, while also increasing site operation workload.
Summary of the invention
In view of this, in order to overcome the drawbacks of the prior art, the object of the present invention is to provide a kind of pipeline fluid thermally stratified layers
Monitoring device can be realized the measurement to pipeline radial fluid temperature gradient, ensure that the accuracy, precision and dynamic of thermometric
Response.
In order to achieve the above object, the following technical solution is employed by the present invention:
A kind of pipeline fluid thermally stratified layer monitoring device, including integrated thermocouple sensor, guide wire and circular band；The integrated thermal
Galvanic couple successively includes connector, extends cable, encapsulating tube assembly and armoured thermocouple；The circular band includes for fixing
It states the attachment base of guide wire lower end and the flexible-belt for being looped around on the outside of pipeline, the armoured thermocouple passes through described lead
Skirt is simultaneously fixed on the flexible-belt after being pierced by from the guide wire lower end.
Preferably, the connector includes shell and the collets being arranged in the shell, thermocouple needle core and use
In the locking reed of locking；The thermocouple needle core includes contact pin and jack, offers in the collets and inserts respectively with described
The first through hole and the second through-hole that needle and jack match.
It is further preferred that the connector includes the male connector and female of mutual cooperation grafting, the male connector successively includes public affairs
Casing, the first shrinkable ring, the first collets, thermocouple needle core and the male connector cooperation matched with the male housing
Part, the female successively include female housing, the second shrinkable ring, the second collets, thermocouple needle core and with the female
The female matching piece that shell matches, the locking reed are arranged on the male connector matching piece, and the male connector matching piece can portion
Distribution, which is closed, is inserted into the female matching piece.
Preferably, the extension cable includes thermocouple wire, the insulating layer being wrapped on the outside of the thermocouple wire, is wrapped in
Shielded layer on the outside of the insulating layer and the sheath being wrapped on the outside of the shielded layer.
Preferably, the encapsulating tube assembly includes cable locking device and metal encapsulating pipe；The cable locking device
Including bolt column, thread cap and the shrinkable ring of third matched with the thread cap with axially extending bore, the metal
The top of encapsulating pipe offers the internal screw thread to match with the bolt column, and the under-filled of metal encapsulating pipe has insulation
Glue.
It is further preferred that the encapsulating tube assembly further includes that the elastic column type branch of the metal encapsulating pipe lower part is arranged in
Frame is offered for supplying the perforative through hole of the armoured thermocouple on the elasticity column type bracket.
It is further preferred that the guide wire includes metal catheter, lock-screw and above the metal catheter
Insulation casing, the insulation casing match with the elastic column type bracket.
Preferably, the circular band further includes for the armoured thermocouple to be fixedly mounted on the circular belt surface
Fixed block, for the circular band to be fixed on the outside of pipeline and carries out the adjustable connection buckle of elastic adjusting and offers for institute
The rectangular through-hole that armoured thermocouple passes through is stated, the end of the armoured thermocouple passes through the rectangular through-hole and is tightly attached to pipeline
On lateral wall.
It is further preferred that the rectangular through-hole be distributed in it is described around with it is different it is radial and axial on, surround when described
When band is looped around on the outside of pipeline, the rectangular through-hole corresponds to the different position of the pipeline.
It is further preferred that when the circular band is looped around on the outside of pipeline, it is right between the adjacent rectangular through-hole
The central angle answered is 20 ° -60 °.
Compared with prior art, the invention has the beneficial effects that: pipeline fluid thermally stratified layer monitoring device of the invention, knot
Structure design rationally, combines by integrated thermocouple sensor, metal guide pipe, around band, forms an organic whole, facilitate live peace
Dress and disassembly, can be realized the measurement to pipeline radial fluid temperature gradient, ensure that the accuracy, precision and dynamic of thermometric are rung
It answers；Integrated thermocouple sensor is drawn by a multipair thermocouple extension cables, and be ensure that and compensated by the way of connector
The convenience and reliability connected between cable, while greatly reducing the usage amount of compensating cable and the work of live cabling
It measures；Finally, present invention can be implemented in the length realized under the high radiation environment of nuclear power plant to primary Ioops subsidiary conduit fluid thermally stratified layer
Phase monitoring.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the explosive view of pipeline fluid thermally stratified layer monitoring device in the preferred embodiment of the present invention；
Fig. 2 is the enlarged drawing of male connector and female in Fig. 1；
Fig. 3 is the enlarged drawing for extending cable and encapsulating tube assembly in Fig. 1；
Fig. 4 is the main view of insulator in the connector of the preferred embodiment of the present invention；
Fig. 5 is the main view of the pipeline fluid thermally stratified layer monitoring device of the preferred embodiment of the present invention；
Fig. 6 is the main view of integrated thermocouple sensor in the pipeline fluid thermally stratified layer monitoring device of the preferred embodiment of the present invention；
Fig. 7 is the main view of guide wire in the pipeline fluid thermally stratified layer monitoring device of the preferred embodiment of the present invention；
Fig. 8 is the main view in the pipeline fluid thermally stratified layer monitoring device of the preferred embodiment of the present invention around band；
Fig. 9 is in the pipeline fluid thermally stratified layer monitoring device of the preferred embodiment of the present invention around the expanded view at the first visual angle of band；
Figure 10 is in the pipeline fluid thermally stratified layer monitoring device of the preferred embodiment of the present invention around the expanded view at the second visual angle of band；
Wherein: integrated thermocouple sensor-A, connector -1, male connector -11, female -12, male connector shell -131, female shell -132, the
One sealing ring -141, the second sealing ring -142, collets -15, the first collets -151, the second collets -152, contact pin -161,
Jack -162 locks the shrinkable ring -182 of the shrinkable ring -181, the second of reed -17, the first, first through hole -191, the second through-hole -
192, male connector matching piece -1001, female matching piece -1002；Extend cable -2, thermocouple wire -21, insulating layer -22, shielded layer -
23, sheath -24；Encapsulating tube assembly -3, cable locking device -31, bolt column -311, locating part -312, external screw thread -313, third
Shrinkable ring -314, thread cap -315, metal encapsulating pipe -32, internal screw thread -321, insulating cement -322, elastic column type bracket -33,
Through hole -331；Armoured thermocouple -4；Metal guide pipe-B, insulation casing -5, metal catheter -6, heat release hole -61, ellipse slit
Mouth -62, lock-screw -7；Around band-C, attachment base -8, metal tape -9, rectangular through-hole -91, fixed block -10, adjustable connection buckle -
1X, link block -1X1, connecting screw -1X2, attaching nut -1X3.
Specific embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, implement below in conjunction with the present invention
Attached drawing in example, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment
Only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
A kind of pipeline fluid thermally stratified layer monitoring device of embodiment
Referring to attached drawing 1-10, a kind of pipeline fluid thermally stratified layer monitoring device of the present embodiment, mainly include integrated thermocouple sensor A,
Guide wire B and around band C three parts, around band C be annular flexible metal tape 9, for being looped around the outer wall of pipeline.
By being combined together by integrated thermocouple sensor A, guide wire B and around band C, organic whole is formed, on the one hand
The convenient Fast Installation on nuclear power plant's return, is on the other hand significantly reduced the usage amount of compensating cable and the work of laying
Amount.
1. integrated thermocouple sensor A
Integrated thermocouple sensor A successively includes connector 1, extends cable 2, encapsulating tube assembly 3 and armoured thermocouple 4.
(1) connector
Connector 1 is aviation plug.Connector 1 include shell and setting collets 15 inside the shell, thermocouple needle core and
Locking reed 17 for locking.Shell is stainless steel material.
Thermocouple needle core includes contact pin 161 and jack 162, and each type is 7 pairs, and positive and negative is 1 pair, and material can be according to thermoelectricity
Even Graduation Number is selected, and is respectively arranged in the collets 15 of male connector 11 and female 12, by welding manner and extends electricity
Core wire, that is, thermocouple wire 21 of cable 2 connects.Collets 15 use PEEK(polyether-ether-ketone) material is in cylindrical type, honeycomb is pressed in inside
The corresponding arrangement of shape is equipped with 7 pairs of through-holes, and each pair of through-hole includes 1 big 1 small first to match respectively with contact pin 161 and jack 162
Through-hole 191 and the second through-hole 192, for installing thermocouple needle core, as shown in Figure 4.
Specifically, connector 1 includes the male connector 11 and female 12 of mutual cooperation grafting, and male connector 11 is successively in the present embodiment
Including male connector shell 131, the first sealing ring 141, the first shrinkable ring 181, the first collets 151, thermocouple needle core and with
The male connector matching piece 1001 that male connector shell 131 matches, female 12 successively include female shell 132, the second sealing ring 142, the
Two shrinkable rings 182, the second collets 152, thermocouple needle core and the female matching piece matched with female shell 132
1002, locking reed 17 is arranged on male connector matching piece 1001, and male connector matching piece 1001 can partially cooperate insertion female matching piece
In 1002.Thermocouple needle core i.e. in male connector 11 is one of them in contact pin 161 or jack 162, the thermocouple in female 12
Needle core is residue one in contact pin 161 or jack 162.Thermocouple needle core in the present embodiment in male connector 11 is contact pin 161, female
Thermocouple needle core in first 12 is jack 162.Between male connector shell 131 and male connector matching piece 1001 and female shell 132 and
It is connected by internal screw thread with external screw thread between female matching piece 1002.
The shell of connector 1 is made of male connector shell 131 and female shell 132, and shape is cylindrical in class, plays fixed extend
Cable 2 accommodates components and forms the function of physical protection.Sealing ring uses silicone rubber material, positioned at the inlet wire for extending cable
On the inside of mouthful and junction of male connector 11, female 12, can play the role of good waterproof sealing.
Locking reed 17 is located at 11 side of male connector, after male connector 11 is combined with female 12, by locking reed 17, realizes connection
Locking between the male and female head of part 1.Thermocouple aviation connector 1 by above-mentioned design has good radiation resistance, high temperature resistant
And waterproof performance.
(2) extending cable 2 is radiation resistance compensating cable comprising thermocouple wire 21 is wrapped in 21 outside of thermocouple wire
Insulating layer 22, the shielded layer 23 for being wrapped in 22 outside of insulating layer and the sheath 24 for being wrapped in 23 outside of shielded layer.
The wherein material of all parts are as follows: insulating layer 22 is PEEK, and sheath 24 is silicon rubber, and it is poly- that others are such as wrapped
Ester.
In other examples, the material of all parts are as follows: insulating layer 22 is crosslinked polyethylene-cross-linked polyolefin, shield
Set 24 is polyolefin, other such as wrapped for polyester.
(3) encapsulating tube assembly 3 includes cable locking device 31, metal encapsulating pipe 32 and is arranged under metal encapsulating pipe 32
The elastic column type bracket 33 in portion.
Cable locking device 31 use stainless steel material, including with axially extending bore bolt column 311, thread cap 315, with
The third that thread cap 315 matches is shrinkable ring 314 is offered for running through for armoured thermocouple 4 on elastic column type bracket 33
Through hole 331, the top of metal encapsulating pipe 32 offers the internal screw thread 321 to match with bolt column 311, metal encapsulating pipe 32
Under-filled have insulating cement 322.
The external screw thread that the setting of bolt column 311 is matched by the internal screw thread 321 and thread cap 315 with metal encapsulating pipe 32
313, it is fixed so bolt column 311 can be screwed into metal encapsulating pipe 32, the limit of hexagonal structure is additionally provided on bolt column 311
Operation is tightened or unscrewed to position part 312 for convenient wrench clamping, and locating part 312 is similar to hex nut.Vault type and contain
The internal screw thread 321 to match with the external screw thread 313 of bolt column 311, and thread cap are also equipped on the thread cap 315 of sealing ring
315 can be used in cooperating across cable by thread cap 315 and the shrinkable ring 314 of third, are used not only for clamping and extend electricity
Cable 2, and can be realized cable locking and sealing.
Metal encapsulating pipe 32 is stainless steel material and upper coarse and lower fine hollow cylinder structural member, upper part into extending cable 2,
And cooperated by internal screw thread 321 and cable locking device 31, elastic column type bracket 33 is arranged in lower part.
Seven through holes 331 are provided in honeycomb in the middle part of elastic column type bracket 33, for across armoured thermocouple 4, resistance to spoke
Weldering is realized inside metal encapsulating pipe 32 according to the thermocouple wire 21 in the thermocouple wire 21 and armoured thermocouple 4 in compensating cable
It connects, and is isolated and is insulated with heat-shrinkable T bush, be filled with insulating cement 322 in encapsulating conduit after the completion of welding and form solidification colloid, realize
Fixation and insulation to thermocouple wire 21.
Armoured thermocouple 4 in the present embodiment includes being made of seven different armoured thermocouples 4 of length, forms armour
Thermocouple beam is filled, thermocouple is 1 class accuracy class, realizes temperature measurement, tail portion core for being mounted on annular flexible metal tape 9
Line extends 2 thermocouple core wire of cable, that is, docking of thermocouple wire 21 in encapsulating Guan Zhongyu and realizes that signal is drawn, and thermocouple armour material uses
INCONEL600 material, inside filling magnesium oxide powder, N-type or K-type thermocouple idol material, can be used for a long time and radiate ring in high temperature height
It is used under border.
The measurement part of the front end integrated thermocouple sensor A is fixed on clockwise on 9 semicircle of flexible annular metal tape, two neighboring
Central angle between the end of thermocouple is 30 °, and the measurement to pipeline radial fluid temperature gradient may be implemented；Armoured thermocouple
4 ends pass through the rectangular through-hole 91 on flexible annular metal tape 9, directly contact with duct wall, avoid tradition across metal tape 9
The drawbacks of measuring pipeline outer wall temperature and causing dynamic response to lag and generate filter effect；The heat formed with multiple thermocouples
The mode of couple bundle realizes the connection with extension cable 2 in encapsulating conduit, and installs thermocouple aviation extending 2 end of cable
Connector, that is, connector 1 realizes the integrated of the component, it is facilitated to dock with the compensating cable of laying；The gold of armoured thermocouple 4
Belong to armour, the extension shielded layer 23 of cable 2, the metal shell of encapsulating tube assembly 3,1 shell of thermocouple aviation connector to be grounded, protect
Good electro-magnetic screen function is demonstrate,proved.
2. guide wire B
Guide wire B includes metal catheter 6, lock-screw 7 and the insulation casing 5 above metal catheter 6, insulation casing 5 with
Elastic column type bracket 33 matches.Heat release hole 61 is also provided on metal catheter 6.
Wherein, insulation casing 5 uses PEEK material, has radiation hardness, high temperature resistant, the performance of insulation；During metal catheter 6 is
Empty stainless steel tube, for protecting and drawing armoured thermocouple 4, stainless steel tube external wall of upper portion is provided with heat release hole 61, for radiating,
It reduces hot-air and metal encapsulating pipe 32 is transmitted to by pipe, lower end tube wall is provided with oval gap 62, for spreading out of armouring heat
Galvanic couple 4.Lock-screw 7 is stainless steel material, for the attachment base 8 and gold on metal guide pipe and flexible annular metal tape 9
The connection belonged between guiding tube and metal encapsulating pipe 32 is locked.
Using metal guide pipe B, armoured thermocouple 4 is pierced by from guide wire B and is introduced directly into the insulating layer of pipeline, this
Strong physical protection is formd to armoured thermocouple 4, and reduces the influence to heat preservation；Metal guide pipe B end portion is equipped with exhausted
Thermal sleeve 5 reduces the heat that pipeline is transmitted to metal encapsulating pipe 32 for separating the contact between guiding tube and encapsulating pipe metal
Amount, meanwhile, it guides and is provided with 3 heat release holes 61 for radiating in 120 ° on tube end circumference, reduce heat as far as possible to insulation
The influence of the high molecular materials heat ageings such as glue 322, the insulating layer 22 for extending cable 2 and sheath 24；Metal guide pipe B and flexible ring
Attachment base 8 and metal encapsulating pipe 32 on shape metal tape 9 are fixed by the way of screw locking not using being threadedly coupled, and are kept away
The problem that 4 outlet of armoured thermocouple can not be corresponding with the outlet on attachment base 8 is exempted from.
3. around band C
Around the flexible-belt i.e. gold that band C includes for fixing the attachment base 8 of the lower end guide wire B, for being looped around on the outside of pipeline
Belong to band 9, for armoured thermocouple 4 to be fixedly mounted on around the fixed block 10 with C Surface, is used to that pipe will to be fixed on around band C
On the outside of road and carries out the adjustable connection buckle 1X of elastic adjusting and offer the rectangular through-hole 91 passed through for armoured thermocouple 4, armour
Dress thermocouple 4 passes through guide wire B and fixes on the flexible band after being pierced by from the lower end guide wire B, and the end of armoured thermocouple 4 passes through
Rectangular through-hole 91 is simultaneously tightly attached on the lateral wall of pipeline.
Attachment base 8 is welded on 9 outer surface of metal tape, for fixing the function of metal guide pipe B.Adjustable connection buckle 1X is by welding
Connect on metal tape 9 and have link block 1X1, mutually matched connecting screw 1X2 and the attaching nut's 1X3 group of threaded hole
At fixation and elastic adjusting after being encircled on pipeline for metal tape 9.
Rectangular through-hole 91 is distributed on different radial and axial of band C, when around being looped around on the outside of pipeline with C
It waits, the different position of the corresponding pipeline of rectangular through-hole 91.Armoured thermocouple 4 passes through rectangular through-hole 91, and end is pressed under metal tape 9
Side realizes the direct contact type thermometric with tube wall, avoids tradition and measures pipeline outer wall temperature across metal tape 9 and cause dynamic
The drawbacks of response lag and generation filter effect.When around band C be looped around on the outside of pipeline when, adjacent rectangle through-hole 91 it
Between corresponding central angle be 20 ° -60 °.9 surface of metal tape is distributed with 7 rectangles by 30 ° of central angle of interval and leads in the present embodiment
Hole 91, the rectangular through-hole 91 for installing the end of armoured thermocouple 4, and after installing are located at the same side of pipeline to realize pair
The measurement of pipeline radial fluid temperature gradient, as seen in figs. 8-10.
9 surface of flexible annular metal tape is neatly arranged 7 armoured thermocouples 4, and is fixedly secured by fixed block 10 soft
Property band on, the rectangular through-hole 91 on thermocouple end insertion metal tape 9 is directly contacted with tube wall, ensure that good during thermometric
Dynamic response and precision；Armoured thermocouple 4 is drawn from the matching hole of metal guide pipe B and endless belt upper connecting base 8, guarantees heat
The neat specification of couple bundle；Flexible annular metal tape 9 can be by adjustable connection buckle 1X adjusting elasticity, to guarantee in metal tape
9 can fit closely with pipeline outer wall；9 material of flexible annular metal tape is identical as pipe material, the two thermal expansion coefficient also one
It causes, ensure that the compactness between pipeline in process of expansion and contraction and metal tape 9.
The material that monitoring device in the present embodiment uses meets the specification used in connection with of Nuclear island equipment, can be applied to nuclear power
In factory's containment, and has the characteristics that radiation resistance, high temperature resistant, ageing-resistant.
The measurement to pipeline radial fluid temperature gradient may be implemented in pipeline fluid thermally stratified layer monitoring device of the invention；Armour
Rectangular through-hole of the thermocouple end on flexible annular metal tape is filled, is directly contacted with duct wall, avoids tradition across gold
The drawbacks of belonging to band measurement pipeline outer wall temperature and causing dynamic response to lag and generate filter effect；In a manner of thermocouple beam
The connection realized in encapsulating conduit and extend cable, and thermocouple Aviation Connector is installed extending cable end, realize this
Component it is integrated, facilitate it to dock with the compensating cable of laying；The metal armour of armoured thermocouple, the shielded layer for extending cable,
Metal shell, the thermocouple aviation company connector housings of encapsulating tube assembly are grounded, and ensure that good electro-magnetic screen function.
Pipeline fluid thermally stratified layer monitoring device of the invention, it is reasonable in design, by integrated thermocouple sensor, metal guide
Pipe combines around band, forms an organic whole, facilitates in-site installation and disassembly；Thermocouple end is directly and pipe surface
It directly contacts, ensure that the accuracy, precision and dynamic response of thermometric；Integrated thermocouple sensor passes through a multipair thermocouple extension
Cable is drawn, and ensure that the convenience and reliability connected between compensating cable by the way of connector, while significantly
Reduce the usage amount of compensating cable and the workload of live cabling；Finally, present invention can be implemented in the irradiation of nuclear power plant's height
The long term monitoring to primary Ioops subsidiary conduit fluid thermally stratified layer is realized under environment.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention, it is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of pipeline fluid thermally stratified layer monitoring device, it is characterised in that: including integrated thermocouple sensor, guide wire and surround
Band；The integrated thermocouple sensor successively includes connector, extends cable, encapsulating tube assembly and armoured thermocouple；It is described to surround
Band includes the attachment base for fixing the guide wire lower end and the flexible-belt for being looped around on the outside of pipeline, the armouring
Thermocouple passes through the guide wire and is fixed on the flexible-belt after being pierced by from the guide wire lower end.
2. a kind of pipeline fluid thermally stratified layer monitoring device according to claim 1, it is characterised in that: the connector includes
Shell and the collets being arranged in the shell, thermocouple needle core and the locking reed for locking；The thermocouple needle
Core includes contact pin and jack, offers the first through hole to match respectively with the contact pin and jack and second in the collets
Through-hole.
3. a kind of pipeline fluid thermally stratified layer monitoring device according to claim 2, it is characterised in that: the connector includes
The male connector and female of mutual cooperation grafting, the male connector successively include male housing, the first shrinkable ring, the first collets, heat
Galvanic couple needle core and the male connector matching piece matched with the male housing, the female successively includes female housing, second can
Contractile ring, the second collets, thermocouple needle core and the female matching piece matched with the female housing, the locking reed
It is arranged on the male connector matching piece, the male connector matching piece can partially cooperate in the insertion female matching piece.
4. a kind of pipeline fluid thermally stratified layer monitoring device according to claim 1, it is characterised in that: the extension cable packet
Include thermocouple wire, the insulating layer being wrapped on the outside of the thermocouple wire, the shielded layer and packet being wrapped on the outside of the insulating layer
The sheath being rolled on the outside of the shielded layer.
5. a kind of pipeline fluid thermally stratified layer monitoring device according to claim 1, it is characterised in that: the encapsulating tube assembly
Including cable locking device and metal encapsulating pipe；The cable locking device includes the bolt column with axially extending bore, screw thread
Cap and the shrinkable ring of the third matched with the thread cap, the top of the metal encapsulating pipe offer and the bolt column
The internal screw thread to match, the under-filled of metal encapsulating pipe have insulating cement.
6. a kind of pipeline fluid thermally stratified layer monitoring device according to claim 5, it is characterised in that: the encapsulating tube assembly
Further include the elastic column type bracket that the metal encapsulating pipe lower part is set, offers on the elasticity column type bracket for for institute
State the perforative through hole of armoured thermocouple.
7. a kind of pipeline fluid thermally stratified layer monitoring device according to claim 6, it is characterised in that: the guide wire includes
Metal catheter, lock-screw and the insulation casing above the metal catheter, the insulation casing and the elastic column type
Bracket matches.
8. a kind of pipeline fluid thermally stratified layer monitoring device according to claim 1, it is characterised in that: the circular band also wraps
It includes for the armoured thermocouple to be fixedly mounted on the fixed block around belt surface, is used to for the circular band being fixed on
On the outside of pipeline and carries out the adjustable connection buckle of elastic adjusting and offer the rectangular through-hole passed through for the armoured thermocouple, institute
The end for stating armoured thermocouple passes through the rectangular through-hole and is tightly attached on the lateral wall of pipeline.
9. a kind of pipeline fluid thermally stratified layer monitoring device according to claim 8, it is characterised in that: the rectangular through-hole point
Cloth it is described around with it is different it is radial and axial on, when the circular band is looped around on the outside of pipeline, the rectangle is logical
Hole corresponds to the different position of the pipeline.
10. a kind of pipeline fluid thermally stratified layer monitoring device according to claim 9, it is characterised in that: when the circular band
When being looped around on the outside of pipeline, corresponding central angle is 20 ° -60 ° between the adjacent rectangular through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910443919.0A CN110211715B (en) | 2019-05-27 | 2019-05-27 | Pipeline fluid thermal stratification monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910443919.0A CN110211715B (en) | 2019-05-27 | 2019-05-27 | Pipeline fluid thermal stratification monitoring device |
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