CN215114907U - Bowl-shaped ring and thermocouple wear-resistant protection device - Google Patents
Bowl-shaped ring and thermocouple wear-resistant protection device Download PDFInfo
- Publication number
- CN215114907U CN215114907U CN202022434549.5U CN202022434549U CN215114907U CN 215114907 U CN215114907 U CN 215114907U CN 202022434549 U CN202022434549 U CN 202022434549U CN 215114907 U CN215114907 U CN 215114907U
- Authority
- CN
- China
- Prior art keywords
- thermocouple
- bowl
- shaped ring
- ceramic
- wear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model is suitable for a thermocouple protection technical field provides a bowl form ring and the wear-resisting protector of thermocouple. The bowl form ring adopts the ceramic material preparation of excellent performance to form, thereby the wear-resisting protector of thermocouple is formed to many bowl form rings head and the tail nestification and add preceding locking clamp and back locking clamp at both ends, and this wear-resisting protector of thermocouple can be used for protecting armoured thermocouple electrode, has following advantage: the wear-resistant performance of the armored thermocouple electrode can be effectively improved, and the product has the advantages of simple structure, light weight, small volume, low production difficulty, low price and convenience in field installation; the ceramic has good heat-insulating property and is resistant to acid and alkali corrosion; the ceramic ring can be replaced after being damaged, the operation is simple and convenient, and the maintenance cost is low; the position of the ceramic ring can be adjusted, the number of the ceramic beads can be freely increased or decreased according to the length of the armored thermocouple electrode to be protected, and the ceramic ring is flexible and changeable; the ceramic ring protection design does not influence the bending of the thermocouple, and the thermocouple can be installed under any installation requirement condition.
Description
Technical Field
The utility model belongs to the technical field of the thermocouple protection, especially, relate to a bowl form ring and wear-resisting protector of thermocouple.
Background
The armored thermocouple electrode is used as a temperature measuring sensor, is usually matched with a temperature transmitter, a regulator, a display instrument and the like for use, forms a process control system, and is used for directly measuring or controlling the temperature of fluid, steam, gas medium, solid surface and the like within the range of 0-1800 ℃ in various production processes. The armored thermocouple electrode is formed by integrally drawing a conductor, high-insulation magnesium oxide and a stainless steel protective tube sheathed with 1Cr18Ni9Ti for multiple times, and has certain wear resistance. However, the conventional sheathed thermocouple electrode has the following two disadvantages:
1. the thermocouple is not suitable for being installed in high-speed mixed fluid containing more solid particles for a long time, and the solid particles contained in the high-speed mixed fluid continuously scour the outer armor of the thermocouple, so that the outer armor is damaged and the inner thermocouple wire of the thermocouple is broken, and the phenomenon that the thermocouple is damaged and temperature measurement cannot be carried out is caused;
2. is not suitable for long-term installation in media containing acid and alkaline substances.
If the armored thermocouple electrode protection sleeve is made of special alloy materials to protect the thermocouple electrode protection sleeve, the cost is high, the protection sleeve limits that the thermocouple cannot be bent, the protection sleeve is only suitable for installation conditions without bending, and the installation range of the thermocouple is greatly limited.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a bowl form ring aims at solving the problem mentioned in the background art.
The embodiment of the utility model provides a realize like this, a bowl form ring:
the lower half part of the outer wall of the bowl-shaped ring is a cambered surface;
the middle of the bowl-shaped ring is provided with a groove, and the bottom of the bowl-shaped ring is provided with a through hole communicated with the groove;
the size of the groove is larger than that of the cambered surface part of the bowl-shaped ring.
Preferably, the bowl-shaped ring is made of a ceramic material.
Preferably, the bowl-shaped ring is made of a zirconia ceramic material.
Another object of the embodiment of the present invention is to provide a thermocouple wear-resistant protection device, the thermocouple wear-resistant protection device includes:
a plurality of bowl-shaped rings as described in any one of the above; a plurality of bowl-shaped rings are nested together end to end; thermocouples are arranged in a plurality of pieces of the bowl-shaped ring;
a front locking clamp and a rear locking clamp; the front locking clamp and the rear locking clamp are respectively arranged at two ends of the bowl-shaped rings and used for locking the bowl-shaped rings on the thermocouple.
Preferably, the diameter of the through hole is larger than that of the cross section of the thermocouple.
Preferably, the diameter of the through hole is 0.8-1.2 mm larger than the diameter of the cross section of the thermocouple.
Preferably, the diameter of the through hole is 1mm greater than that of the cross section of the thermocouple.
The embodiment of the utility model provides a pair of bowl form ring adopts the excellent ceramic material preparation of performance to form, thereby bowl form ring head and the tail nested and lock clamp and back locking clamp in front of adding at both ends and form a wear-resisting protector, this wear-resisting protector can be used to protect the armor thermocouple electrode. The wear-resistant protection device has the following advantages:
(1) the wear-resistant performance of the armored thermocouple electrode can be effectively improved through the ceramic ring, and the product has the advantages of simple structure, light weight, small volume, low production difficulty, low price and convenience in field installation;
(2) the ceramic has good heat-insulating property and is resistant to acid and alkali corrosion;
(3) the ceramic ring can be replaced after being damaged, the operation is simple and convenient, and the maintenance cost is low;
(4) the position of the ceramic ring can be adjusted, the number of the ceramic beads can be freely increased or decreased according to the length of the armored thermocouple electrode to be protected, and the ceramic ring is flexible and changeable;
(5) the ceramic ring protection design does not influence the bending of the thermocouple, and the thermocouple can be installed under any installation requirement condition.
Drawings
Fig. 1 is a schematic structural view of a bowl-shaped ring according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a thermocouple wear-resistant protection device provided by an embodiment of the present invention.
In the drawings: 1. a bowl-shaped ring; 11. a groove; 12. a cambered surface; 13. a through hole; 2. front locking clamp; 3. locking the clamp; 4. and sheathing the thermocouple electrode.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is provided for the specific embodiments of the present invention.
Example 1
As shown in fig. 1, a bowl-shaped ring 1 is provided for an embodiment of the present invention:
the lower half part of the outer wall of the bowl-shaped ring 1 is a cambered surface 12;
the middle of the bowl-shaped ring 1 is provided with a groove 11, and the bottom of the bowl-shaped ring is provided with a through hole 13 communicated with the groove 11;
the size of the groove 11 is larger than the size of the part of the bowl-shaped ring 1 with the cambered surface 12.
Specifically, the lower half part of the bowl-shaped ring 1 in the arc surface 12 can be embedded in the groove 11 of another bowl-shaped ring 1 with the same size, and the plurality of bowl-shaped rings 1 are connected in a terminating and embedding manner, so that a long chain with a hollow inner part can be formed. The long chain can be used for placing a plurality of elongated detecting instruments inside, and the long chain bowl-shaped ring 1 is formed for protecting the detecting instruments inside.
As a preferred embodiment of the present invention, the bowl-shaped ring 1 is made of a ceramic material.
The ceramic material is an inorganic non-metallic material prepared by forming and high-temperature sintering natural or synthetic compounds. It has the advantages of high melting point, high hardness, high wear resistance, oxidation resistance, etc. and may be used as structural material and cutter material. The ceramic material is selected to prepare the bowl-shaped ring 1 in the embodiment firstly because of the excellent mechanical properties of the ceramic material: the ceramic material has the best rigidity and the highest hardness in engineering materials, and the hardness of the ceramic material is mostly more than 1500 HV. The excellent mechanical property ensures that the bowl-shaped ring 1 made of the ceramic material has extremely high rigidity and hardness and is not easy to be damaged by huge impact force, and a detection instrument in the bowl-shaped ring cannot be damaged by overlarge external force. Secondly, it is due to the excellent thermal properties of the ceramic material: ceramic materials generally have high melting points (mostly above 2000 ℃) and excellent chemical stability at high temperatures; ceramics have lower thermal conductivity than metal materials, and ceramics are also good heat insulating materials; meanwhile, the linear expansion coefficient of the ceramic is lower than that of metal, and the ceramic has good dimensional stability when the temperature changes. This enables the bowl-shaped ring 1 made of ceramic material to withstand extremely high temperatures, for example, thermocouples are used as a detection instrument, some thermocouples are often in a high temperature environment to work, and the conventional protection device for the thermocouples is often not able to withstand such high temperatures, so that the protection effect on the thermocouples is very small. However, this phenomenon does not occur when the bowl-shaped ring 1 made of the ceramic material in this embodiment is used as a protection device, and the excellent thermal properties of the ceramic material make it still have high mechanical properties in a high-temperature environment. Secondly, it is due to the excellent electrical insulating properties of the ceramic material: most ceramics have good electrical insulation, so that the ceramics are widely used for manufacturing insulation devices with various voltages (1 kV-110 kV). For example, ferroelectric ceramics (barium titanate BaTiO 3) has high dielectric constant and can be used for manufacturing capacitors, and the ferroelectric ceramics can change the shape under the action of an external electric field, convert electric energy into mechanical energy (having the characteristics of piezoelectric materials), and can be used as a loudspeaker, a phonograph, an ultrasonic instrument, sonar, a medical sonograph and the like. Therefore, the bowl-shaped ring 1 made of the ceramic material can protect a detection instrument inside the bowl-shaped ring from being influenced by external current, and the safety of the detection instrument during working is greatly improved. Finally, it is due to the excellent chemical properties of ceramic materials: the ceramic material is not easy to oxidize at high temperature and has good corrosion resistance to acid, alkali and salt. This enables the bowl-shaped ring 1 of ceramic material to be used in a variety of harsh environments. At present, some detection instruments are often not applicable to some severe environments due to lack of corresponding protection devices, and the bowl-shaped ring 1 made of the ceramic material in the embodiment is used as a protection device, so that the detection instruments can be applied to various environments.
As a preferred embodiment of the present invention, the bowl-shaped ring 1 is made of zirconia ceramic material.
In view of the excellent performance of the ceramic material, the ceramic material is particularly selected in the embodiment to have more excellent performance, and is also commonly applied in other fields, and the zirconia ceramic with easily available raw materials is used as the material for preparing the bowl-shaped ring 1. The pure zirconia ceramics are white and yellow or gray when containing impurities. The zirconia ceramic has the following advantages:
high hardness, high toughness, high bending strength, zirconia ceramic density between 5.95-6.05 g/cm;
the wear resistance is 15 times that of the alumina ceramic, the friction coefficient is only 1/2 of the alumina ceramic, and after grinding, the surface finish is higher and can be more than 9, the surface of the aluminum oxide ceramic is mirror-like and extremely smooth, and the friction coefficient is smaller;
the insulating property is good, the corrosion resistance is strong, no static electricity exists, the high temperature resistance is realized, the heat insulation performance is excellent, and the thermal expansion coefficient is close to that of steel;
the zirconia ceramics has self-lubricating property, and can solve the problems of pollution caused by lubricating media and inconvenient addition.
The properties enable the surface of the bowl-shaped ring 1 made of zirconia ceramics to be extremely smooth, the bowl-shaped ring 1 and the bowl-shaped ring 1 are matched very smoothly, and the phenomenon that the bowl-shaped ring 1 and the bowl-shaped ring are clamped by large friction force cannot occur. The detection instrument inside the device is protected by the bowl-shaped ring 1, the corresponding bending degree can be freely adjusted, and the detection performance is not influenced at all.
Example 2
Another object of the embodiment of the present invention is to provide a thermocouple wear-resistant protection device, the thermocouple wear-resistant protection device includes:
a plurality of bowl-shaped rings 1 as described in any one of the above; a plurality of bowl-shaped rings 1 are nested together end to end; thermocouples are arranged in a plurality of pieces of the bowl-shaped ring 1;
a front locking clamp 2 and a rear locking clamp 3; the front locking clamp 2 and the rear locking clamp 3 are respectively arranged at two ends of a plurality of bowl-shaped rings 1 and are used for locking the bowl-shaped rings 1 on a thermocouple.
Specifically, the thermocouple in the present embodiment specifically refers to the sheathed thermocouple electrode 4. The armored thermocouple electrode 4 is formed by welding two ends of two conductors with different components to form a loop, wherein the direct temperature measuring end is called a working end, and the terminal end is called a cold end and is also called a reference end. When the working end and the reference end have temperature difference, thermal current can be generated in the loop, and a display instrument is connected, so that the instrument can indicate the corresponding temperature value of the thermal electromotive force generated by the thermocouple. The thermoelectromotive force of the armored thermocouple electrode 4 increases along with the temperature rise of the measuring end, and the magnitude of the thermoelectromotive force is only related to the material of the thermocouple conductor and the temperature difference of the two ends and is not related to the length and the diameter of the thermocouple electrode. The sheathed thermocouple electrode 4 is mainly used for directly measuring or controlling the temperature of fluid, steam, gas medium, solid surface and the like within the range of 0-1800 ℃ in various production processes. Therefore, the protection device for the sheathed thermocouple electrode 4 often needs to have extremely excellent performance so as to be suitable for various severe environments where the sheathed thermocouple electrode 4 is located.
In the embodiment, zirconia ceramics is selected to prepare the bowl-shaped ring 1, the prepared bowl-shaped rings 1 are sleeved on the armored thermocouple electrode 4, and the two ends of the long chain of the bowl-shaped ring 1 are locked and fixed by the front locking clamp 2 and the rear locking clamp 3, so that the bowl-shaped rings 1 are mutually nested and fixed, and the bowl-shaped rings 1 cannot slide along the direction of the armored thermocouple electrode 4.
Moreover, the number of the bowl-shaped rings 1 can be adjusted according to the armored thermocouple electrodes 4 with different lengths, when the length of the armored thermocouple electrodes 4 is too long, the number of the bowl-shaped rings 1 is only needed to be increased, and when the length of the armored thermocouple electrodes 4 is too short, the number of the bowl-shaped rings 1 is only needed to be reduced, so that the method is flexible and variable, and is suitable for protection of the armored thermocouple electrodes 4 with various sizes and lengths. The existing protection device for the armored thermocouple electrode 4 belongs to a protection device with the size corresponding to the armored thermocouple electrode 4, the protection device cannot be adjusted according to the size length change of the armored thermocouple electrode 4, in actual production, a large number of protection devices need to be prepared, and when the armored thermocouple electrode 4 in a certain protection device is damaged, the external protection device is still intact, but cannot be used continuously, and resources are wasted to a certain extent.
In summary, the thermocouple wear-resistant protection device has the following advantages:
(1) the wear-resistant performance of the armored thermocouple can be effectively improved through the ceramic ring, and the product is simple in structure, light in weight, small in size, low in production difficulty, low in price and convenient to install on site;
(2) the ceramic has good heat-insulating property and is resistant to acid and alkali corrosion;
(3) the ceramic ring can be replaced after being damaged, the operation is simple and convenient, and the maintenance cost is low;
(4) the position of the ceramic ring can be adjusted, the number of the ceramic beads can be freely increased or decreased according to the length of the armored thermocouple to be protected, and the ceramic ring is flexible and changeable;
(5) the ceramic ring protection design does not influence the bending of the thermocouple, and the thermocouple can be installed under any installation requirement condition.
As a preferred embodiment of the present invention, the diameter of the through hole 13 is larger than the diameter of the thermocouple cross section.
Specifically, the diameter of the through hole 13 is larger than the diameter of the cross section of the armored thermocouple electrode 4, so that the armored thermocouple electrode 4 can be adjusted to a certain extent in the through hole 13, and the armored thermocouple electrode 4 is not hard to operate due to the fact that the bowl-shaped ring 1 is additionally arranged.
As a preferred embodiment of the present invention, the diameter of the through hole 13 is greater than the diameter of the cross section of the thermocouple by 0.8-1.2 mm.
Specifically, according to the practical use experience, the effect is better when the diameter of through-hole 13 is greater than the diameter 0.8~1.2mm of armor thermocouple electrode 4 cross section, has both guaranteed the flexibility of armor thermocouple electrode 4 operation, also can not make the too big and reduction protection effect in space between armor thermocouple electrode 4 and the bowl form ring 1 yet.
As a preferred embodiment of the present invention, the diameter of the through hole 13 is greater than the diameter of the thermocouple cross section by 1 mm.
Specifically, according to practical experience, the effect is best when the diameter of the through hole 13 is larger than the diameter of the cross section of the armored thermocouple electrode 4 by 1 mm.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A bowl-shaped ring characterized in that:
the lower half part of the outer wall of the bowl-shaped ring is a cambered surface;
the middle of the bowl-shaped ring is provided with a groove, and the bottom of the bowl-shaped ring is provided with a through hole communicated with the groove;
the size of the groove is larger than that of the cambered surface part of the bowl-shaped ring.
2. The bowl-shaped ring as claimed in claim 1, wherein the bowl-shaped ring is made of a ceramic material.
3. The bowl-shaped ring as claimed in claim 2, wherein the bowl-shaped ring is made of zirconia ceramic material.
4. A thermocouple wear protection device, comprising:
a plurality of bowl-shaped rings as claimed in any one of claims 1 to 3; a plurality of bowl-shaped rings are nested together end to end; thermocouples are arranged in a plurality of pieces of the bowl-shaped ring;
a front locking clamp and a rear locking clamp; the front locking clamp and the rear locking clamp are respectively arranged at two ends of the bowl-shaped rings and used for locking the bowl-shaped rings on the thermocouple.
5. A thermocouple wear protection device in accordance with claim 4, wherein the diameter of the through hole is greater than the diameter of the thermocouple cross-section.
6. A thermocouple wear protection device in accordance with claim 5, wherein the diameter of the through hole is 0.8-1.2 mm larger than the diameter of the thermocouple cross section.
7. A thermocouple wear protection device in accordance with claim 6, wherein the diameter of the through hole is greater than 1mm of the diameter of the thermocouple cross-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022434549.5U CN215114907U (en) | 2020-10-28 | 2020-10-28 | Bowl-shaped ring and thermocouple wear-resistant protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022434549.5U CN215114907U (en) | 2020-10-28 | 2020-10-28 | Bowl-shaped ring and thermocouple wear-resistant protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215114907U true CN215114907U (en) | 2021-12-10 |
Family
ID=79262342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022434549.5U Active CN215114907U (en) | 2020-10-28 | 2020-10-28 | Bowl-shaped ring and thermocouple wear-resistant protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215114907U (en) |
-
2020
- 2020-10-28 CN CN202022434549.5U patent/CN215114907U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2147309C (en) | Protective ceramic device for immersion pyrometer | |
| CN215114907U (en) | Bowl-shaped ring and thermocouple wear-resistant protection device | |
| CN216449047U (en) | Testing device | |
| CN207487842U (en) | A kind of sulfur corrosion resistant leakproof sheathed thermal couple thermal resistance | |
| CN209280163U (en) | A kind of armouring pair twist thermocouple | |
| CN105300536B (en) | A kind of anti-fracture thermocouple of Anti-erosion | |
| CN101034016B (en) | Special type WRe temperature sensor | |
| CN201025622Y (en) | A nickel base armoured thermocouple | |
| CN207038210U (en) | A kind of naval vessel single-core cable | |
| RU2117265C1 (en) | Device measuring temperature of corrosive melts | |
| US9905334B2 (en) | Cable having polymer with additive for increased linear pullout resistance | |
| CN201041193Y (en) | Ceramic rolling bearing | |
| CN106813792A (en) | A kind of Anti-erosion durable type thermocouple | |
| CN210221329U (en) | Right-angle temperature sensor capable of pulling core | |
| CN209102228U (en) | A kind of multi-measuring point temperature sensor | |
| CN205300793U (en) | Thermal resistance thermocouple dual signal integration double armor temperature element (TE | |
| CN208570139U (en) | A kind of high temperature resistant sensor, high temperature resistant winding coil conducting wire | |
| CN201421377Y (en) | Armored thermocouple with function of outputting multiple signals in same measuring point | |
| CN216246854U (en) | Silicon nitride thermocouple protection tube | |
| CN211346939U (en) | Heat insulation type temperature difference flow probe | |
| CN104242197A (en) | High-temperature waterproof bus duct | |
| CN102928108A (en) | Novel pyrometer couple | |
| CN205789211U (en) | A kind of microlight-type photoelectric composite charging detection cable | |
| CN203406081U (en) | High-temperature-resistant corrosion-resistant armored precious metal thermocouple compensation lead cable | |
| Noda et al. | The melting of glassy carbon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |