CN105716732B - A kind of surface temperature measurement device and its installation method - Google Patents
A kind of surface temperature measurement device and its installation method Download PDFInfo
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- CN105716732B CN105716732B CN201510568096.6A CN201510568096A CN105716732B CN 105716732 B CN105716732 B CN 105716732B CN 201510568096 A CN201510568096 A CN 201510568096A CN 105716732 B CN105716732 B CN 105716732B
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Abstract
The invention discloses a kind of surface high-temp measurement apparatus and its installation method, including locating piece, the protection sleeve pipe being set on the outside of thermocouple, threaded sleeve, lock-bit sleeve pipe and the clip, the spring that is placed on inside protection sleeve pipe that are set on the outside of protection sleeve pipe being fixed on thermocouple.The present invention can effectively prevent horizontal positioned thermocouple at high temperature because gravity and effect of vibration occur bending and deformation, it is ensured that measuring point is accurately positioned；Install simultaneously, to dismantle technique simple；Each part relative position can be changed according to different test environments, the measurement apparatus is applied to different fitting depths, the high temperature measurement environment of oscillation intensity.
Description
Technical field
The present invention relates to surface high-temp field of measuring technique, more particularly to a kind of thermo-electric couple temperature measuring apparatus and its installation
Method.
Background technology
In field of pyrometry, thermocouple is because its precision is high, temperature-measuring range is wide, simple operation and other advantages turn at present extensively
The temperature measuring equipment used.Because commercial Application is horizontal and scientific experiment requires to improve constantly, the application environment of thermocouple is more next
It is more severe, more and more higher is required to thermocouple temperature measurement.
By taking the measurement of combustion engine chamber wall temperature as an example, thermocouple is operated in high temperature, high pressure, strong vibration environment while tested combustion
It is mostly thin-wall construction to burn room, therefore proposes high requirement to the installation method of thermocouple.Rational the installation of TC method
The contact good during thermometric with testee surface of warm galvanic couple is must assure that, carries out sufficient heat exchange.Traditional
SMD the installation of TC method relies on the life-span of paster, once temperature is too high or usage time is long, it will and cause paster to lose
Maximum error will occur in effect, thermocouple measurement result.
Relief of thermal stress is required consideration for how in temperature measuring equipment design process and how to resist vibration, temperature measuring equipment should
Possess the ability for adapting to thermal expansion while should possess the ability that vibration and migration are born under high temperature.
In the prior art, compressed spring type thermocouple is applied to the pulling force of thermocouple by spring and thermocouple is pressed on into measured object
Body surface face, but spring can not offset the axial force that vibration is applied to thermocouple, in the case where vibrating violent operating mode, thermocouple is easily tired
Labor is broken.
Patent CN104089715A discloses a kind of thermocouple insulation locator and its installation method and wall temperature measurement device.
To ensure being accurately positioned for thermocouple at the wall temperature measurement point of vibrating device surface, install biasing springs additional in device rear end, pass through pushing
Spring effect is in the self-locking bolt being fixed on thermocouple, so as to which thermocouple probe is pressed on into point position.But due to bullet
Spring axial pretightening trail force load position rearward, when thermocouple is horizontal positioned and is chronically in high temperature and vibration environment, in gravity
In the presence of vibration, the flexible deformation of thermocouple.
In the prior art, thermocouple positioning element is respectively positioned on device rear end in temperature measuring equipment, and this design can make to be pushed against
Thermocouple probe and the distance between positioner on tested wall is larger, under high temperature horizontal positioned thermocouple gravity with
And easily occured bending and deformation under vibration collective effect, so as to influence measuring point accuracy while reduce thermocouple service life.
In the prior art, temperature measuring equipment does not have versatility, it is necessary to according to installation hole depth and vibration in test environment
Intensity separately designs, manufactures corresponding temperature measuring equipment, and cost is higher.
The content of the invention
For thermocouple drawbacks described above, core purpose of the invention is, there is provided a kind of surface temperature measurement device, with solution
Certainly during current wall temperature test, because gravity and effect of vibration cause asking for thermocouple flexural deformation horizontal positioned under high temperature
Topic；Because vibration causes the problem of temperature measuring equipment is with the loose contact of testee surface；Simultaneously simplify temperature measuring equipment installation,
Dismounting technique, the versatility of temperature measuring equipment is improved, improve the service life of temperature measuring equipment.
In order to solve the above-mentioned technical problem, a kind of thermocouple temperature measurement for measurement surface temperature provided by the present invention fills
Put, including thermocouple, protection sleeve pipe, threaded sleeve, lock-bit sleeve pipe, clip, thermocouple locating piece, spring；The protection
Inside pipe casing offers the through hole and cavity that heat supply galvanic couple passes through, and described protection sleeve pipe one end is axially opening up two grooves；Institute
Thermocouple locating piece is stated to be fixedly connected with thermocouple；The spring is placed on mounting plane, when spring is in former long, thermocouple
Protection sleeve pipe is stretched out on head；The clip, threaded sleeve and lock-bit sleeve pipe are set in outside protection sleeve pipe, threaded sleeve
Between lock-bit sleeve pipe and clip, boss inside the threaded sleeve be present and threaded sleeve is upper in protection sleeve pipe
Put adjustable.
As a further improvement on the present invention, it is rectangular channel that the protection sleeve pipe back end outer surface, which opens up groove, rectangular channel
Length direction is parallel to protection sleeve pipe axial direction.
Further, the thermocouple locating piece coordinates with protection sleeve pipe cavity clearance, ensures that thermocouple is empty in protection sleeve pipe
Intracavitary can move freely.
Further, the thermocouple is used with thermocouple locating piece and is welded to connect.
Further, the spring is high temperature resistant spring, to ensure the mechanical performance of spring under the high temperature conditions.
Further, boss inside the threaded sleeve be present, boss coordinates with protection sleeve pipe groove gap, ensures thread bush
Pipe is circumferentially positioned in protection sleeve pipe.
Further, for the lock-bit sleeve pipe away from the self-locking of threaded sleeve direction, lock-bit sleeve pipe and clip are common
Effect ensures axially position of the threaded sleeve in protection sleeve pipe.
The installation method of surface temperature measurement device, it is characterised in that comprise the following steps：
1st, suitable dimension spring and locating piece are chosen, spring is placed in installation of guard sleeve plane.By thermocouple
Side where from protection sleeve pipe through hole penetrates, and side where from cavity passes.Locating piece is welded in thermocouple ad-hoc location so that works as bullet
When spring is in former long, protection sleeve pipe end face is stretched out on thermocouple head；
Preferably, 3~4mm of protection sleeve pipe is stretched out on thermocouple head；
2nd, testee surface is measured away from installing hole distance from determining threaded sleeve position in protection sleeve pipe so that work as spiral shell
When line sleeve pipe is all screwed into mounting hole, protection sleeve pipe end face distance measured surface is relatively near but does not contact measured surface, protects conduit
The distance between end face and testee are less than spring and stretch out protection sleeve pipe end face distance；
Preferably, the distance of protection sleeve pipe end face and measured surface is 1~2mm；
3rd, clip, threaded sleeve and lock-bit sleeve pipe are set in the protection sleeve pipe corresponding positions that step 2 determines successively
Put, tighten clip, now threaded sleeve is fixed on protection sleeve pipe outer surface under the collective effect of clip and lock-bit sleeve pipe.
Screw thread sleeve pipe makes its whole submerge in mounting hole, and now thermocouple probe will push against measured surface under the action of the spring.
Compared with prior art, locating piece in conduit is protected to be stretched into together with thermocouple in mounting hole in the present invention,
Locating piece is nearer apart from testee surface, is acted on by the radial positioning of locating piece and protection sleeve pipe through hole, ensures thermoelectricity
Occasionally ensure the accuracy of temperature measuring point during thermometric with not occured bending and deformation under vibration condition in high temperature；
Compared with prior art, the present invention can automatically adjust the position at thermocouple temperature measurement end by spring, ensure its with
Testee surface fully contacts, while the presence of spring can effectively alleviate stress concentration caused by vibration；
Compared with prior art, the present invention uses the adjustable threaded sleeve of axial location, can be applicable different depth installation
Hole, while can adjust initial tension of spring by adjusting threaded sleeve and thermocouple locating piece welding position so that thermocouple
Different vibration environments can be applied to；
Compared with prior art, all parts of the present invention are detachable, simplify installation and dismounting technique while improve
The versatility and maintainability of thermocouple, reduces design, processing cost.
Brief description of the drawings
Fig. 1 is the structural representation of temperature measuring equipment of the present invention；
Mark and corresponding parts and surface title in accompanying drawing：Including 1- thermocouples；2- protection sleeve pipes；21- protective cases
Pipe through-hole；22- protection sleeve pipe cavitys；23- installation of guard sleeve planes；24- protection sleeve pipe grooves；25- protection sleeve pipes end face；3-
Threaded sleeve；31- threaded sleeve floors；4- clips；5- lock-bit sleeve pipes；6- thermocouple locating pieces；7- springs；
Fig. 2 is the structural representation that the present invention is applied to combustion engine combustion chamber；
Fig. 3 is protection sleeve pipe top view of the present invention；
Fig. 4 is the structural representation of lock-bit sleeve pipe of the present invention.
Embodiment
The core of the present invention is, there is provided a kind of New-type thermocouple temperature measuring equipment, it is horizontal positioned to eliminate thermocouple under high temperature
When due to the problem of Action of Gravity Field deforms, ensure thermocouple being accurately positioned at apparatus surface measuring point, while alleviate thermocouple
Axial stress, so as to ensure that thermocouple being capable of long-time stable work；In addition, simplify the installation of thermocouple temperature sensor, tear open
Technique is unloaded, improves the versatility of temperature measuring equipment.
In conjunction with Figure of description, come describe in detail the concrete structure of surface temperature measurement device provided by the present invention and
Its operating process.
Fig. 1 and Fig. 2 are referred to, wherein, Fig. 1 shows surface high-temp measurement apparatus specific embodiment party provided by the present invention
The structural representation of formula, Fig. 2 show that the partial structurtes of surface high-temp measurement apparatus shown in Fig. 1 and heavy combustion engine assembly are illustrated
Figure.
The assembling technology procedure of surface temperature measurement device is：
As shown in figure 1, choosing suitable dimension spring 7 and locating piece 6, spring 7 is placed on the mounting plane of protection sleeve pipe 2
On 23.Thermocouple 1 is penetrated from the place side of protection sleeve pipe through hole 21, passed from the place side of cavity 22.In the ad-hoc location of thermocouple 1
Weld locating piece 6 so that when spring 7 is long in original, the end face 25 of protection sleeve pipe 2 is stretched out on thermocouple head；
Preferably, 3~4mm of protection sleeve pipe is stretched out on thermocouple head；
Measurement testee surface is away from installing hole distance from determining the position in protection sleeve pipe 2 of threaded sleeve 3 so that work as spiral shell
When line sleeve pipe 3 is all screwed into mounting hole, the end face 25 of protection sleeve pipe 2 is relatively near apart from measured surface but does not contact measured surface；
Preferably, the distance of the end face of protection sleeve pipe 2 and measured surface is 1~2mm；
Clip 4, threaded sleeve 3 and lock-bit sleeve pipe 5 are set in the relevant position of protection sleeve pipe 2, tightening card successively
4 are bound round, now threaded sleeve 3 is fixed on the outer surface of protection sleeve pipe 2 under the collective effect of clip 4 and lock-bit sleeve pipe 5.Screw
Threaded sleeve 3 makes its whole submerge in mounting hole, and now the probe of thermocouple 1 will push against measured surface in the case where spring 7 acts on.
Threaded sleeve 3 is protected by the way that the gap of groove 24 of boss 31 and protection sleeve pipe 2 is coordinated in above-mentioned assembling technology procedure
Demonstrate,prove circumferentially positioned.If Fig. 3 is protection sleeve pipe top view, groove 24 is opened up in the rear end of protection sleeve pipe 2, the length direction of groove 24 is along axle
To the boss 31 of threaded sleeve 3 is inserted in the groove 24 of protection sleeve pipe 2, relevant position is moved to, passes through lock-bit sleeve pipe 5
The fastening effect of axial self-locking and clip 4 ensures threaded sleeve in the effective axially position in the outside of protection sleeve pipe 2.
This temperature measuring equipment can be used for different depth thermometric environment by the present invention by adjusting the axial location of threaded sleeve 3,
Because threaded sleeve 3 is shorter and general whole is submerged and the long external screw thread of conventional protection sleeve pipe is compared in mounting hole, greatly reduce
The probability of screw thread damage so that the installation of TC, the flexibility of dismounting and device reliability are greatly improved.
In use, lock-bit sleeve pipe 5 will bear due to vibration caused by threadingly sleeve pipe 3 point to lock-bit
The axial force in the direction of sleeve pipe 5.As shown in figure 4, lock-bit sleeve pipe 5 is by inner conical drogue 51, steel ball 52, inner sleeve 53, outer tube 54
And biasing springs 55 form.Outer tube 54 is interference fitted with inner conical drogue 51, and inner conical drogue 51 coordinates with the gap of inner sleeve 53, inner sleeve
The internal diameter of pipe 53 is more bigger than the external diameter of protection sleeve pipe 2, uniform steel ball 52 on inner sleeve 53, and the minimum public inscribed circle diameter of steel ball 52 is than protecting
The external diameter of protecting pipe 2 is smaller, keeps contacting with the inner conical surface of inner conical drogue 51 by the pretightning force steel ball 52 of biasing springs 55.According to interior
The inner conical surface of tapered sleeve 51 rationally designs inner conical surface with the coefficient of friction of steel ball 52 and the outer surface of protection sleeve pipe 2 with the coefficient of friction of steel ball 52
Cone angle so that reduce direction self-locking along cone angle when lock-bit sleeve pipe 5 is enclosed in protection sleeve pipe 2, so as to another with threaded sleeve 3
Side clip 4 ensures threaded sleeve 3 in the effective axially position in the outside of protection sleeve pipe 2 together.
The clip 4 of opposite side can also be covered with holding screw to be replaced.
When needing to adjust 3 position of threaded sleeve or dismantling the device, this device need to only be back-outed from mounting hole,
Clip 4 is pulled down, then by threaded sleeve 3 and lock-bit sleeve pipe 5 along side axle where clip to taking out successively.
In actual measurement process, live each size of Vibration Condition Reasonable adjustment can be passed through.It is described as follows：Such as Fig. 2 institutes
Show, it is assumed that it is d that measurement, which obtains the tested wall distance of mounting hole outer surface distance, to ensure that the end face 25 of protection sleeve pipe 2 does not contact quilt
Surface is surveyed in order to avoid influenceing wall surface temperature, mobile threaded sleeve 5 makes end face distance protection sleeve pipe 2 front end face d1, wherein d=d1 thereafter
+ Δ d, Δ d are that the end face 25 of protection sleeve pipe 2 should ensure locating piece 6 apart from tested wall distance, Δ d less than the width of locating piece 6
The cavity 22 of protection sleeve pipe 2 will not be skidded off because of fortuitous event, it is 1~2mm that Δ d is selected under small vibration operating mode, when scene is shaken
It can increase Δ d by adjusting the position of threaded sleeve 3 when more violent.Assuming that the length of 2 cavity of protection sleeve pipe 22 is l, spring 7 is former long
For l1, welding locating piece 6 makes end face distance thermocouple probe l-l1+ Δ l thereafter, therefore when threaded sleeve 3 is completely screwed into installation
Kong Shi, the pretightning force of spring 7 that thermocouple 1 is subject to be k* (Δ l- Δ d), at the scene install when can according to actual working environment,
The size of rational selection spring 7 and Δ l- Δs d meets the pretightning force of test request to provide, and adapts to temperature measuring equipment different
Vibration environment.
It should be noted that the effect of thermocouple locating piece 6 is in this programme, the elastic force of spring 7 is passed into thermoelectricity
Even 1 to balance tested wall because vibration is applied to the axial force of thermocouple 1, simultaneously because the positional distance thermocouple 1 of locating piece 6
Probe positions are nearer, avoid flexural deformation of the thermocouple 1 under high temperature and vibration environment, ensure the accurate of point position
Property, it can effectively prevent that pollutant etc. is attached to the outer wall of thermocouple 1 and reduces its measuring accuracy in working environment in addition.
Although statement and describing preferred embodiment, embodiment can be carried out various changes or replacement without departing from
The spirit and scope of the present invention.It is therefore to be understood that the present invention is by way of example rather than restrictive one is described.
Claims (8)
- A kind of 1. surface temperature measurement device, it is characterised in that including thermocouple (1), protection sleeve pipe (2), threaded sleeve (3), Clip (4), lock-bit sleeve pipe (5), thermocouple locating piece (6), spring (7)；Through hole (21) and cavity (22) that heat supply galvanic couple (1) passes through, the protective case are offered inside the protection sleeve pipe (2) Pipe (2) one end is in outboard shafts to opening up two grooves (24)；The thermocouple locating piece (6) is fixedly connected with thermocouple (1)；The spring (7) is placed on mounting plane in protection sleeve pipe (23), when spring (7) is in former long, thermocouple (1) head Stretch out protection sleeve pipe (2)；The threaded sleeve (3), lock-bit sleeve pipe (5) and clip (4) are set in protection sleeve pipe (2) outside, threaded sleeve position Exist and protection sleeve pipe (2) groove between lock-bit sleeve pipe (5) and clip (4) and inside the threaded sleeve (3) (24) boss (31) coordinated.
- 2. surface temperature measurement device as claimed in claim 1, it is characterised in that protection sleeve pipe (2) back end outer surface It is rectangular channel to open up groove (24), and rectangular channel length direction is parallel to protection sleeve pipe (2) axial direction.
- 3. surface temperature measurement device as claimed in claim 1, it is characterised in that the thermocouple locating piece (6) and protection Collar cavities (9) internal surface gaps coordinate.
- 4. surface temperature measurement device as claimed in claim 1, it is characterised in that the thermocouple (1) positions with thermocouple Block (6) is used and is welded to connect.
- 5. surface temperature measurement device as claimed in claim 1, it is characterised in that the spring is high temperature resistant spring.
- 6. surface temperature measurement device as claimed in claim 1, it is characterised in that existing for threaded sleeve (3) inside Boss (31) coordinates with protection sleeve pipe (2) groove (24) gap, the threaded sleeve (3) axial location in protection sleeve pipe (2) It is adjustable.
- 7. surface temperature measurement device as claimed in claim 1, it is characterised in that the lock-bit sleeve pipe (5) is reverse certainly Lock.
- 8. the installation method of surface temperature measurement device, it is characterised in that comprise the following steps：(S1) suitable dimension spring (7) and thermocouple locating piece (6) are chosen, spring (7) is placed on protection sleeve pipe (2) installation In plane (23), thermocouple (1) is penetrated from side where protection sleeve pipe through hole (21), side where from cavity (22) passes, in heat Galvanic couple (1) ad-hoc location welding thermocouple locating piece (6) so that when spring (7) is long in original, protection is stretched out on thermocouple head Sleeve pipe (2) end face (25), this distance is depending on on-the-spot test environment；(S2) testee surface is measured away from installing hole distance from determining threaded sleeve (3) position in protection sleeve pipe (2) so that When threaded sleeve (3) is all screwed into mounting hole, protection sleeve pipe (2) end face (25) is relatively near apart from measured surface but does not contact tested Surface, this distance is depending on live oscillation intensity；(S3) clip (4), threaded sleeve (3) and lock-bit sleeve pipe (5) are set in protection sleeve pipe (2) corresponding positions successively Put, tighten clip (4), now threaded sleeve (3) is fixed on guarantor under the collective effect of clip (4) and lock-bit sleeve pipe (5) Protecting pipe (2) outer surface, screw thread sleeve pipe (3) make its whole submerge in mounting hole, and now thermocouple (1) probe will be in spring (7) it is pushed against under acting on measured surface.
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| CN201510568096.6A CN105716732B (en) | 2015-09-09 | 2015-09-09 | A kind of surface temperature measurement device and its installation method |
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| CN201510568096.6A CN105716732B (en) | 2015-09-09 | 2015-09-09 | A kind of surface temperature measurement device and its installation method |
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| CN105716732A CN105716732A (en) | 2016-06-29 |
| CN105716732B true CN105716732B (en) | 2018-03-27 |
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| CN106996836A (en) * | 2017-04-20 | 2017-08-01 | 安徽春辉仪表线缆集团有限公司 | A kind of thermocouple structure of heat conduction measurement |
| CN108731842A (en) * | 2017-09-30 | 2018-11-02 | 江苏核电有限公司 | A kind of resistance to thermometer that shakes of elasticity |
| WO2019226771A1 (en) * | 2018-05-22 | 2019-11-28 | Watlow Electric Manufacturing Company | Fiber optic probe with dual sealing and compression element |
| CN109175277A (en) * | 2018-09-13 | 2019-01-11 | 浙江万丰奥威汽轮股份有限公司 | A kind of the installation of TC technology |
| CN109115274A (en) * | 2018-09-29 | 2019-01-01 | 安徽容知日新科技股份有限公司 | Monitoring device and the method for installing monitoring device |
| CN110398513B (en) * | 2019-08-05 | 2024-04-02 | 上海防灾救灾研究所 | Flat plate temperature measuring device |
| CN113566994A (en) * | 2021-07-08 | 2021-10-29 | 中国航发湖南动力机械研究所 | Bearing temperature measuring device |
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| CN2072221U (en) * | 1990-05-18 | 1991-02-27 | 浙江省鄞县热电偶厂 | Spring-pressing fix type thermocouple |
| CN201852647U (en) * | 2010-11-18 | 2011-06-01 | 山东大学 | Device for measuring temperature of external wall of round pipe section |
| CN203148582U (en) * | 2012-11-07 | 2013-08-21 | 成都飞机设计研究所 | Non-adhibition type surface temperature-measuring thermocouple |
| CN203443690U (en) * | 2013-07-11 | 2014-02-19 | 江苏兆龙电气有限公司 | Bleed-out forecast thermocouple capable of adjusting measured distance |
| CN104089715A (en) * | 2014-07-29 | 2014-10-08 | 中国核动力研究设计院 | Thermocouple insulation locator, mounting method thereof and wall temperature measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9341522B2 (en) * | 2013-05-01 | 2016-05-17 | Rosemount Inc. | Spring-loaded temperature sensor |
| DE212014000130U1 (en) * | 2013-08-16 | 2016-01-26 | Eaton Corporation | Detection device for the temperature and / or pressure in a cylinder of an internal combustion engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2072221U (en) * | 1990-05-18 | 1991-02-27 | 浙江省鄞县热电偶厂 | Spring-pressing fix type thermocouple |
| CN201852647U (en) * | 2010-11-18 | 2011-06-01 | 山东大学 | Device for measuring temperature of external wall of round pipe section |
| CN203148582U (en) * | 2012-11-07 | 2013-08-21 | 成都飞机设计研究所 | Non-adhibition type surface temperature-measuring thermocouple |
| CN203443690U (en) * | 2013-07-11 | 2014-02-19 | 江苏兆龙电气有限公司 | Bleed-out forecast thermocouple capable of adjusting measured distance |
| CN104089715A (en) * | 2014-07-29 | 2014-10-08 | 中国核动力研究设计院 | Thermocouple insulation locator, mounting method thereof and wall temperature measuring device |
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| CN105716732A (en) | 2016-06-29 |
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