CN204903025U - Temperature sensor's vibration damper - Google Patents
Temperature sensor's vibration damper Download PDFInfo
- Publication number
- CN204903025U CN204903025U CN201520499334.8U CN201520499334U CN204903025U CN 204903025 U CN204903025 U CN 204903025U CN 201520499334 U CN201520499334 U CN 201520499334U CN 204903025 U CN204903025 U CN 204903025U
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- temperature sensor
- hole
- sleeve pipe
- shoulder hole
- vibration
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model relates to a temperature sensor's vibration damper, establish the outside sleeve pipe at temperature sensor including the cover, this sheathed tube hole is the shoulder hole, and this shoulder hole includes the path part of the big footpath subtotal lower part on upper portion, and temperature sensor's probe setting is in the path part of shoulder hole, the sheathed tube hole is the through -hole, sets up the damping ring who is used for fixed temperature sensor in this through -hole. The utility model discloses a damping device through being equipped with shoulder hole or damping ring, has avoided temperature sensor stronger at the fluid scouring force, or under the great condition of pipeline vibration itself, oscillation generation or vibration displacement are too big, produce the damage to temperature sensor and destroy even, improve the usability of equipment, reduced the maintenance cost of equipment, make the contact of temperature sensor and sheathed tube inseparabler, avoid because the influence that causes instrument temperature measurement performance and response time of excesssive gap between the two.
Description
Technical field
The utility model belongs to the field engineering of temperature sensor, is specifically related to the vibration absorber of temperature sensor.
Background technology
Temperature parameter is as one of the important reflection feature of nuclear power station operating condition, and temperature survey widely uses in nuclear power station.Wherein, the most frequently used situation is that thermometric instrument is inserted in pipeline by sleeve pipe and carries out temperature survey.Under pipeline vibration itself or fluid scouring effect, sleeve pipe can produce sustained vibration, and space between sleeve pipe and temperature sensor is larger, and under acceleration effect, the bending stress that temperature sensor bears is larger, collides more obvious.The temperature-sensitive part of sensor is positioned at the end of sensor, be collided and the situation of wearing and tearing more serious, easily cause in sensor the hot water radiation wire being less than 1mm to damage, affect temperature survey.In the second phase of Qinshan in the past project and ridge Australia second phase project, all there is temperature sensor to be arranged on the stronger pipeline of vibration and install, hot water radiation wire fracture occurs thus the instrument situation of scrapping after running.
Vibration reducing measure conventional in industry is oil-filled vibration damping.But in nuclear power field, the oil-filled stable performance degree not only needing to consider in long-term irradiation situation, and oil-filledly also cannot to use under inflammable and explosive environment.In order to improve thermometric instrument serviceable life under vibrating conditions, the utility model proposes the vibration reducing measure between several temperature sensor and sleeve pipe.Under the prerequisite that base mounting interface, sleeve outer, jacket insertion depth cannot change; by changing the inner structure of sleeve pipe; play the effect reducing vibration, thus protect thermometer not by or the as far as possible few infringement vibrated, for power station saves maintenance of equipment and replacement cost.
Utility model content
For the defect existed in prior art, the utility model provides a kind of vibration absorber of temperature sensor, and vibration temperature sensor can being avoided when thermometric because water impact produces, improves the safety and reliability of nuclear power plant equipment.
For reaching above object, the technical solution adopted in the utility model is: the vibration absorber providing a kind of temperature sensor, this device comprises the sleeve pipe being set in temperature sensor outside, the endoporus of this sleeve pipe is shoulder hole, this shoulder hole comprises the large diameter portion on top and the path part of bottom, and the probe of temperature sensor is arranged on the path part of shoulder hole.
Further, the endoporus of described sleeve pipe is through hole, arranges the damping ring being used for fixed temperature sensor in this through hole.
Further, the endoporus of described sleeve pipe is provided with multiple damping ring for fixed temperature sensor.
Further, the large diameter portion of described shoulder hole is 15mm.
Further, the minor diameter part of described shoulder hole is divided into 6.5mm.
Advantageous Effects of the present utility model is:
(1) the utility model is by being set to shoulder hole or being provided with damping ring in the endoporus of sleeve pipe by the endoporus of sleeve pipe, avoid temperature sensor stronger in fluid scouring power, or pipeline itself vibration larger when, between temperature sensor and sleeve pipe produce vibration or vibration displacement excessive, to temperature sensor produce damage even destroy;
(2) the utility model contact of making temperature sensor and sleeve pipe is tightr, avoids the impact because excesssive gap between the two causes instrument thermometric performance and response time;
(3) vibration absorber of the present utility model, improves the availability of equipment, reduces the maintenance cost of equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the vibration absorber embodiment 1 of the utility model temperature sensor;
Fig. 2 is the structural representation of the vibration absorber embodiment 2 of the utility model temperature sensor.
In figure:
1-sleeve pipe 2-temperature sensor 3-shoulder hole 4-damping ring
5-instrumentation tap part
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Embodiment 1
As shown in Figure 1, be the structural representation that the utility model provides the vibration absorber of temperature sensor, this device comprises the sleeve pipe 1 being set in temperature sensor 2 outside, and this sleeve pipe 1 is connected with temperature sensor by instrumentation tap part 5.The endoporus of this sleeve pipe 1 is processed as shoulder hole 3, and this shoulder hole 3 top is large diameter portion, and bottom is path part, and the probe of temperature sensor is arranged on path part, to reduce the micro-displacement produced between temperature sensor 2 probe segment and sleeve pipe 1 as far as possible.Thus, vibration absorber of the present utility model is comparatively strong in fluid scouring power, pipeline vibration itself comparatively greatly, or under the prerequisite that cannot change at base mounting interface, sleeve outer, jacket insertion depth, the structure of sleeve pipe is adjusted, reaches the object to temperature sensor vibration damping.
Wherein, the large diameter portion D1 of shoulder hole is 12-15mm, is preferably 15mm; The path part D2 of shoulder hole is 5-7mm, is preferably 6.5mm.
The utility model can not change sleeve outer and base size for connection, do not affect measurement, modern process for machining prerequisite under carry out, and the part wall thickness that the utility model not only can not destroy sleeve pipe load performance but also its shrinkage cavity increases, and also increases to the load performance of sleeve pipe entirety.Through further mechanical analysis, the weight change of sleeve pipe, in tolerance interval, all can not produce the impact of resistance to shock on the connecting portion of sleeve pipe and even whole pipeline.
When not changing sleeve pipe mounting interface, because part meter probe size is less, if casing wall thickness certainly will be made thicker according to probe size coupling casing inner diameter, add the weight of sleeve pipe, unfavorable to the antivibration of pipeline, and higher for internal surface of sleeve pipe requirement on machining accuracy, if strengthen casing inner diameter, the vibration displacement that can increase instrument on the one hand causes the damage of instrument, is the response time that can affect instrument on the other hand.
In nuclear power station project in the past, the internal diameter more greatly 15mm of sleeve pipe.And now ripe both at home and abroad temperature sensor product footpath mostly is 6-8mm, therebetween space is excessive, except thermometric performance being had to certain influence, response time prolongation, because some pipeline internal medium flow velocity is excessive, cause fluid comparatively strong to the scouring force of sleeve pipe, cause sleeve pipe and produce lasting microvibration between the temperature sensor installed in it.This vibration brings certain impact will to the life-span of thermometer.When vibrating violent, instrument will be damaged.
Therefore, by reducing the space of cannula tip, the contact of temperature sensor and sleeve pipe can be made tightr, end portion vibration reduced to minimum.And the machine work of shoulder hole, compare through hole also convenient, casing weight is lighter.Make in order to avoid diminishing due to casing inner diameter temperature sensor insert the constructional difficulties of sleeve pipe, shoulder hole upper inner diameter is become large, even if therefore machining accuracy is not high, also can not cause temperature sensor that the risk not entering sleeve pipe is installed.
Embodiment 2
As shown in Figure 2, the utility model is not changing on the basis of existing structure, and the endoporus of sleeve pipe is set to through hole, the damping ring 4 being used for fixed temperature sensor is set in this through hole, this damping ring 4 can arrange multiple, for temperature sensor fixing at different parts, to reduce vibration.The aperture D1 of this endoporus is 15mm.
Embodiment 1 of the present utility model and embodiment 2, can according to embody rule situation, with the use of or be used alone, all can play good effectiveness in vibration suppression.
In sum, the utility model is by changing sleeve pipe physical construction or increasing damping ring, while improving instrument measurement performance, make closely to engage between sleeve pipe with the temperature sensor installed in it, combine together, when the sleeve pipe high vibration caused due to pipe vibration or fluid scouring, effective vibration damping is played to temperature sensor itself, damage or other harmful effects can not be produced due to vibration to the sensitive element of temperature sensor, thus affect normal temperature monitoring in nuclear power station.Thus, the utility model can ensure the normal operation of nuclear power station, and greatly reduces the operation expense of equipment.
The vibration absorber of temperature sensor of the present utility model is not limited to above-mentioned embodiment, and those skilled in the art draw other embodiment according to the technical solution of the utility model, belongs to technological innovation scope of the present utility model equally.
Claims (5)
1. the vibration absorber of temperature sensor, it is characterized in that: comprise and be set in the outside sleeve pipe (1) of temperature sensor (2), the endoporus of this sleeve pipe (1) is shoulder hole (3), this shoulder hole (3) comprises the large diameter portion on top and the path part of bottom, and the probe of temperature sensor is arranged on the path part of shoulder hole (3).
2. the vibration absorber of temperature sensor as claimed in claim 1, is characterized in that: the endoporus of described sleeve pipe (1) is through hole, is provided with the damping ring (4) for fixed temperature sensor in described through hole.
3. the vibration absorber of temperature sensor as claimed in claim 2, is characterized in that: the endoporus of described sleeve pipe (1) is provided with multiple damping ring for fixed temperature sensor (4).
4. the vibration absorber of temperature sensor as claimed in claim 1, is characterized in that: the large diameter portion of described shoulder hole (3) is 15mm.
5. the vibration absorber of temperature sensor as claimed in claim 1, is characterized in that: the minor diameter part of described shoulder hole (3) is divided into 6.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520499334.8U CN204903025U (en) | 2015-07-10 | 2015-07-10 | Temperature sensor's vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520499334.8U CN204903025U (en) | 2015-07-10 | 2015-07-10 | Temperature sensor's vibration damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204903025U true CN204903025U (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520499334.8U Active CN204903025U (en) | 2015-07-10 | 2015-07-10 | Temperature sensor's vibration damper |
Country Status (1)
| Country | Link |
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| CN (1) | CN204903025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556744A (en) * | 2018-12-13 | 2019-04-02 | 淄博益源工程技术有限公司 | A kind of antivibration spiral shape protection sleeve pipe |
-
2015
- 2015-07-10 CN CN201520499334.8U patent/CN204903025U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556744A (en) * | 2018-12-13 | 2019-04-02 | 淄博益源工程技术有限公司 | A kind of antivibration spiral shape protection sleeve pipe |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |