CN207180898U - A kind of taper thermocouple - Google Patents

A kind of taper thermocouple Download PDF

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Publication number
CN207180898U
CN207180898U CN201721249857.2U CN201721249857U CN207180898U CN 207180898 U CN207180898 U CN 207180898U CN 201721249857 U CN201721249857 U CN 201721249857U CN 207180898 U CN207180898 U CN 207180898U
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China
Prior art keywords
sleeve pipe
flange
spoiler
thermocouple
fixed
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Application number
CN201721249857.2U
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Chinese (zh)
Inventor
江冰
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Shanghai Jincheng Electric Co Ltd
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Shanghai Jincheng Electric Co Ltd
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Priority to CN201721249857.2U priority Critical patent/CN207180898U/en
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Abstract

The utility model discloses a kind of taper thermocouple, belong to technical field of temperature measurement.Including terminal box, ring flange and sleeve pipe, terminal box is fixed on the end of sleeve pipe, and ring flange is fixed on sleeve pipe, and the front end of sleeve pipe is a circular cone structure, it is characterised in that:Described sleeve pipe is provided with spoiler, helically line style extends and is fixed on sleeve pipe the spoiler from bottom to top, and through hole is uniformly provided with spoiler, and the flange side surface is provided with flange, the periphery radius surface of the flange is gradually reduced, and sealed groove is additionally provided with flange;The utility model destroys the formation of Kaman's whirlpool by spoiler, weakens the periodic vibration that sleeve pipe is subject to, and avoids sleeve pipe from improving service life due to cracking caused by vibration;Flange adds contact area during installation, enhances stability.

Description

A kind of taper thermocouple
Technical field
A kind of taper thermocouple is the utility model is related to, belongs to technical field of temperature measurement.
Background technology
Thermocouple is the temperature element commonly used in temperature measuring instrument, thermocouple typically by terminal box, sleeve pipe and ring flange, Sleeve pipe is cylindrical structure, and it includes temperature sensor, direct measurement temperature, and temperature signal is converted into electromotive force signal simultaneously Shown by other electric meters, be typically fixed on by ring flange in flue or fireplace and test the fluid temperature such as flue gas Degree;Taper thermocouple is a kind of relatively conventional thermocouple, its front end be bullet to reduce insertion when resistance, facilitate insertion into In process piping.
When in use, the fluid in process piping flows through sleeve pipe can induce set tube vibration to thermocouple, i.e. thermocouple sheath is consolidated There are frequency and flow eddies shedding frequence to produce resonance, the formation because of Kaman's whirlpool of thermocouple vibration inducement, produce Kaman The reason for vortex is that kinetic energy and pressure energy are mutually changed after fluid is obstructed, and pressure is along cylinder circumference and the thickness direction in boundary layer Change, the larger pressure action of boundary layer external fluid forces the less particle of inside boundary pressure to flow round about It is dynamic, so that boundary layer growth, forms vortex, then depart from from periphery, vortex disappears after being elongated with flow velocity increase Lose.When side vortex grow up disengaging when, the vortex of opposite side is formed and grown up, and is so alternatively formed two row vortex wakes, It is similar to " vortex street ".The vortex of Karman vortex street is with certain frequency generation, disengaging and loss, and the pressure of cylinder both sides is also with identical Frequency generating period change, when vortex shedding frequencies be equal to a certain vibration shape of cylinder the natural frequency of vibration when, cylinder will Fierce vibration occurs, this phenomenon belongs to a kind of induced vibration;Under the influence of Kaman's whirlpool, thermocouple is held in use Continuous vibration, causes sleeve pipe to ftracture, and service life reduces.
The content of the invention
Technical problem to be solved in the utility model is:There is provided a kind of taper thermocouple it solve current thermoelectricity The problem of even set tube vibration causes cracking, service life is short.
Technical problem to be solved in the utility model takes following technical scheme to realize:
A kind of taper thermocouple, including terminal box, ring flange and sleeve pipe, terminal box are fixed on the end of sleeve pipe, ring flange It is fixed on sleeve pipe, the front end of sleeve pipe is a circular cone structure, and described sleeve pipe is provided with spoiler, and the spoiler is from bottom to top Helically line style extends and is fixed on sleeve pipe, through hole is uniformly provided with spoiler, the flange side surface is provided with flange, described The periphery radius surface of flange is gradually reduced, and sealed groove is additionally provided with flange.
By using above-mentioned technical proposal, when fluid passes through sleeve pipe, disturbed under the guide functions of spoiler along spiral type Flowed between flowing plate, fluid can carry out the motion of one section of helically line, while a part in spoiler interval along spoiler Fluid enters in another spoiler interval through through hole, destroys the formation of Kaman's whirlpool, will not be formed periodically in sleeve pipe both sides Pressure, therefore avoid the periodic vibration of sleeve pipe, improve the service life of sleeve pipe;The periphery radius surface of flange gradually subtracts It is small, coordinate with the response mounting hole on furnace wall, pipeline during installation, add contact area, enhance stability, in sealed groove Interior installation high-temperature seal ring, prevent leakage.
As preferred embodiment, the width of the spoiler is 10~35mm.
As preferred embodiment, the thickness of the spoiler is 3~6mm.
The beneficial effects of the utility model are:Spoiler destroys the formation of Kaman's whirlpool, weakens the cycle that sleeve pipe is subject to Property vibration, avoid sleeve pipe due to caused by vibration cracking, improve service life;Flange adds contact area during installation, increases Strong stability.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure:Terminal box 1, ring flange 2, flange 21, sealed groove 22, sleeve pipe 3, spoiler 4, through hole 41.
Embodiment
In order to be easy to understand to technological means of the present utility model, creation characteristic, reached purpose and effect, tie below Conjunction is specifically illustrating, and the utility model is expanded on further.
As shown in figure 1, a kind of taper thermocouple, including terminal box 1, ring flange 2 and sleeve pipe 3, terminal box 1 are fixed on sleeve pipe 3 end, ring flange 2 are fixed on sleeve pipe 3, and the front end of sleeve pipe 3 is a circular cone structure, and sleeve pipe 3 is provided with spoiler 4, disturbed Helically line style extends and is fixed on sleeve pipe 3 flowing plate 4 from bottom to top, and through hole 41, the end of ring flange 2 are uniformly provided with spoiler 4 Face is provided with flange 21, and the periphery radius surface of flange 21 is gradually reduced, and sealed groove 22 is additionally provided with flange 21.
The width of spoiler 4 is 10~25mm.
The thickness of spoiler 4 is 3~6mm.
When mounted, corresponding mounting hole is opened up on furnace wall or pipeline, the installation elevated-temperature seal pad in sealed groove 22, Ring flange 2 is fixed by welding or nut again.
The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above.One's own profession The technical staff of industry it should be appreciated that the utility model is not restricted to the described embodiments, do not depart from the utility model spirit and On the premise of scope, the utility model also has various changes and modifications, and these changes and improvements both fall within the utility model will In the range of asking protection.The utility model requires protection scope is by appended claims and its equivalent thereof.

Claims (3)

1. a kind of taper thermocouple, including terminal box, ring flange and sleeve pipe, terminal box are fixed on the end of sleeve pipe, ring flange is solid It is scheduled on sleeve pipe, the front end of sleeve pipe is a circular cone structure, it is characterised in that:Described sleeve pipe is provided with spoiler, the flow-disturbing Helically line style extends and is fixed on sleeve pipe plate from bottom to top, and through hole is uniformly provided with spoiler, and the flange side surface is set There is flange, the periphery radius surface of the flange is gradually reduced, and sealed groove is additionally provided with flange.
A kind of 2. taper thermocouple according to claim 1, it is characterised in that:The width of the spoiler be 10~ 25mm。
A kind of 3. taper thermocouple according to claim 1, it is characterised in that:The thickness of the spoiler is 3~6mm.
CN201721249857.2U 2017-09-27 2017-09-27 A kind of taper thermocouple Active CN207180898U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721249857.2U CN207180898U (en) 2017-09-27 2017-09-27 A kind of taper thermocouple

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721249857.2U CN207180898U (en) 2017-09-27 2017-09-27 A kind of taper thermocouple

Publications (1)

Publication Number Publication Date
CN207180898U true CN207180898U (en) 2018-04-03

Family

ID=61748492

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721249857.2U Active CN207180898U (en) 2017-09-27 2017-09-27 A kind of taper thermocouple

Country Status (1)

Country Link
CN (1) CN207180898U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112097943A (en) * 2020-09-16 2020-12-18 鑫国集团有限公司 Sulfur-resistant armored thermocouple

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112097943A (en) * 2020-09-16 2020-12-18 鑫国集团有限公司 Sulfur-resistant armored thermocouple

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