CN206656812U - A kind of sensor for measurement surface transient temperature - Google Patents
A kind of sensor for measurement surface transient temperature Download PDFInfo
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- CN206656812U CN206656812U CN201720380164.0U CN201720380164U CN206656812U CN 206656812 U CN206656812 U CN 206656812U CN 201720380164 U CN201720380164 U CN 201720380164U CN 206656812 U CN206656812 U CN 206656812U
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Abstract
The utility model discloses a kind of sensor for measurement surface transient temperature, and it includes temperature-sensing element, diplopore ceramics pole, protection sleeve and compensating wire；Wherein temperature-sensing element includes ceramic matrix, be parallel to each other the metal wire type parallel pole one being embedded in the ceramic matrix and metal wire type parallel pole two, is deposited on the ceramic matrix end face and forms the function film of hot junction film with the metal wire type parallel pole one and the overlap joint of metal wire type parallel pole two and be deposited on the insulation protection film on the function film surface；Sealed between the protection sleeve and temperature-sensing element and make it that passing through the diplopore ceramics pole between the metal wire type parallel pole one and metal wire type parallel pole two insulate；Sealed between the compensating wire and protection sleeve.The utility model has the advantages that sensor construction is simple, easy for installation, dynamic response time is Millisecond, temperature-measuring range is 50 DEG C~600 DEG C, disclosure satisfy that the requirement of surface transient temperature measuring.
Description
Technical field
The utility model belongs to sensor technical field, particularly relates to a kind of for measurement surface transient temperature
Sensor.
Background technology
Temperature sensor has in multiple fields such as metallurgical building materials, Thermal Power Engineering, dynamic power machine, Aero-Space widely should
With with the continuous progress of science and technology, the developing direction of temperature sensor is intended to high temperature quick response aspect, especially surveys
The sensor of scale face transient temperature has important application value.Wherein thermocouple is most simple, the most frequently used in temperature survey
Temperature sensor, traditional thermocouple temperature sensor has been difficult to further reduce due to being limited by material line footpath size
Hot junction volume, and the size of hot junction volume directly affects the speed of the response time of sensor, so traditional thermoelectricity
Even sensor thermal capacity is big, and response speed is slow, it is difficult to realizes the measurement to surface transient temperature.
And film thermocouple has the advantages that hot junction small volume, thermal capacity be small, fast response time, therefore in transient temperature
Occupy very important status in measurement.The thermoelectrical potential of film thermocouple output simultaneously typically in millivolt level, two thermodes it
Between, be required to that there is good insulating properties between compensating wire and between thermocouple and matrix, otherwise can be damaged due to thermoelectrical potential
Consume and produce measurement error, measurement is resulted even in when serious to be carried out.But existing film thermocouple can not meet
Above-mentioned requirements.
The content of the invention
In view of defects in the prior art, the purpose of this utility model is to provide for one kind and is used for measurement surface transient state temperature
The sensor of degree, it has, and sensor construction is simple, easy for installation, dynamic response time be Millisecond, 50 DEG C of temperature-measuring range~
600 DEG C, the advantages that disclosure satisfy that the requirement of surface transient temperature measuring.
To achieve these goals, the technical solution of the utility model：
A kind of sensor for measurement surface transient temperature, it is characterised in that including：
Temperature-sensing element, diplopore ceramics pole, protection sleeve and compensating wire；Wherein described temperature-sensing element includes ceramic base
Body, be parallel to each other the metal wire type parallel pole one being embedded in the ceramic matrix and metal wire type parallel pole two, deposition
It is hot in being formed on the ceramic matrix end face and with the metal wire type parallel pole one and the overlap joint of metal wire type parallel pole two
The function film of contact film and the insulation protection film for being deposited on the function film surface；The protection sleeve and temperature-sensitive
Sealed between element and to pass through the diplopore between the metal wire type parallel pole one and metal wire type parallel pole two
Ceramics pole insulate；Sealed between the compensating wire and protection sleeve.
Further, as the preferred of the present invention
The metal wire type parallel pole one is NiCr alloy materials, and the metal wire type parallel pole two is NiSi alloys
Material.
Further, as the preferred of the present invention
The function film is NiSi alloy materials；The insulation protection film is SiO2Material.
Further, as the preferred of the present invention
The ceramic matrix uses cermet.
Further, as the preferred of the present invention
Tapered thread mounting structure is provided with the protection sleeve.
Compared with prior art, the beneficial effects of the utility model：
It is Millisecond that the utility model, which has simple in construction, easy for installation, dynamic response time, temperature-measuring range is 50 DEG C~
600 DEG C of the advantages that, it is applied to the measurement of diesel engine piston surface transient temperature and the survey of shock tunnel model surface temperature
Amount.
Brief description of the drawings
Fig. 1 is the sensor overall structure diagram of the present invention for measurement surface transient temperature；
Fig. 2 a are the partial sectional view at the A in Fig. 1；
Fig. 2 b are the partial sectional view at the B in Fig. 1；
Fig. 3 is the preparation technology flow chart of sensor of the present invention；
Fig. 4 is that sensor of the present invention carries out piston thermometric schematic diagram；
Fig. 5 is sensor surface thermometric schematic diagram of the present invention.
In figure：1st, insulation protection film, 2, function film, 3, ceramic matrix, 4, metal wire type electrode one, 5, metal wire type
Electrode two, 6, refractory inorganic adhesive I, 7, diplopore ceramics pole, 8, protection sleeve, 9, tapered thread installation, 10, refractory inorganic adhesive
II, 11, compensating wire.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, implement below in conjunction with the utility model
Accompanying drawing in example, the technical solution of the utility model is clearly and completely described, it is clear that described embodiment is this
Utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belong to the model of the utility model protection
Enclose.
The utility model devises a kind of sensor for measurement surface transient temperature, its mainly include temperature-sensing element,
Diplopore ceramics pole, the protection sleeve and compensating wire for being threaded mounting structure.
Wherein, as shown in Fig. 1-Fig. 2 a, Fig. 2 b, the temperature-sensing element includes ceramic matrix, two electrodes being parallel to each other
That is metal wire type electrode one and metal wire type electrode two, the function film as hot junction film and insulation protection film；Two
Individual the metal wire type electrode one being parallel to each other and metal wire type electrode two are abreast embedded in ceramic matrix, form parallel electricity
Pole, a layer function film is deposited in ceramic matrix end face, the function film overlaps to form hot junction film with parallel pole, finally
One layer of insulation protection film is deposited on function film surface；Refractory inorganic adhesive is used between the temperature-sensing element and protection sleeve
I is sealed, and is insulated between two parallel electrodes and its between protection sleeve using diplopore ceramics pole, compensating wire and protective case
Refractory inorganic adhesive II insulated enclosures are used between cylinder, and tapered thread mounting structure is set on protection sleeve.
Preferably, the metal wire type parallel pole one uses NiCr alloy materials, the metal wire type parallel pole two
Using NiSi alloy materials；The function film uses NiSi alloy materials, and its thickness is 800nm, the insulation protection film
Using SiO2Material, its thickness are 1 μm；The ceramic matrix uses cermet, as model VITA VMK 95 metal is made pottery
Porcelain；The diplopore earthenware is alundum tube, and the protection sleeve is 304 stainless steel materials；The refractory inorganic adhesive is double bond
DB5012 refractory inorganic adhesives；The compensating wire is the heat with metal wire type electrode one, two identical material of metal wire type electrode
Galvanic couple compensating wire；Tapered thread mounting structure is set on the protection sleeve.Separately nickel chromium triangle-nisiloy (NiCr/NiSi) alloy is
One group of widely used cheap metal thermocouple material, can be used, the maximum temperature of short-period used is reachable at 900 DEG C for a long time
1200 DEG C, the oxidation resistance and resistance to corrosion under high temperature are all very strong, and with the pyroelecthc properties linearity is good, high sensitivity
The features such as.
Another object of the present utility model is to provide for a kind of preparation technology for being used to prepare the sensor, and its feature exists
In comprising the following steps：
Step 1, penetrate metal wire type electrode one and metal wire type electrode two are parallel on request in diplopore ceramics pole；
Step 2, on the surface of the metal wire type electrode one and the either end of metal wire type electrode two it is coated with one layer
Thickness be 0.1~0.3mm as transition enamel coating cermet and be put into ceramic pressing furnace carry out high temperature sintering；
Step 3, in the metal wire type electrode one and metal wire type electrode two have been subjected to the surface of high temperature sintering again
One layer of coating has the certain thickness cermet as matrix enamel coating, and its diameter is slightly larger than the internal diameter of protection sleeve pipe, and will
It is placed again into ceramic pressing furnace and carries out high temperature sintering with so that being formed after the transition enamel coating and described matrix enamel coating sintering
Ceramic matrix；
Step 4, above-mentioned metal wire type electrode one and metal wire type electrode with diplopore ceramics pole and ceramic matrix
Two penetrate in protection sleeve and are insulated with refractory inorganic adhesive I one end that sleeve will be protected to be in contact with ceramic matrix close in the lump
Envelope；
Step 5, the end face to the ceramic matrix are polished with sand paper and polished on polishing machine；
Step 6, in high vacuum coating unit, it is thin in the end face deposition function that ceramic matrix is polished with magnetron sputtering mode
Film；
Step 7, in high vacuum coating unit, with magnetron sputtering mode depositing function film surface deposit insulation protect
Protect film；
Step 8, the both positive and negative polarity phase by the both positive and negative polarity of compensating wire and metal wire type electrode one and metal wire type electrode two
It is corresponding to tangle, then it is sealed against with refractory inorganic adhesive II insulation in protection sleeve；
Step 9, tapered thread mounting structure is set on protection sleeve.
Further, as the preferred of the present invention
The diplopore earthenware is alundum tube, and the protection sleeve is 304 stainless steel materials；The refractory inorganic adhesive I
And refractory inorganic adhesive II is double bond DB5012 refractory inorganic adhesives；The compensating wire be with metal wire type electrode one,
The compensation lead of thermocouple of two identical material of metal wire type electrode.
Sensor preparation technology embodiment：First, by diplopore ceramics pole 7, metal wire type electrode 1, electrode 25 and protection
Sleeve 8 is respectively washed 15min with alcohol and distilled water in supersonic wave cleaning machine successively, removes the impurity of its surface attachment, so
Two electrode runs parallels are penetrated to a diameter of 3mm of diplopore ceramics pole 7, wherein diplopore ceramics pole, length 50mm on request afterwards,
As shown in (a) in Fig. 3；Brushed in the parallel electrode surfaces ceramics cleaned and cover the transition that a layer thickness is 0.1~0.3mm
Enamel coating, the progress high temperature sintering 10min at 940 DEG C is put into ceramic pressing furnace, as shown in (b) in Fig. 3；Sintering transition
The parallel electrode surfaces of enamel coating cover one layer of matrix enamel coating with ceramics brushing again, make its a diameter of 3~4mm, and length is 8~
10mm, the progress high temperature sintering 10min at 940 DEG C is put into ceramic pressing furnace, is formed after transition enamel coating and matrix enamel coating sintering
Ceramic matrix 3, for the diameter of ceramic matrix slightly larger than the internal diameter of protection sleeve 8, the protection internal diameter of sleeve 8 is 3mm, external diameter 4mm, is grown
Spend for 50mm, as shown in (C) in Fig. 3；The diplopore ceramics pole 7 and the ceramic matrix for having been inserted into parallel pole are penetrated into protection
Sleeve 8, with refractory inorganic adhesive I 6 by it with protecting the insulated enclosure of sleeve 8, as shown in (d) in Fig. 3；By the ceramic base
The end face of body is polished with the sand paper of the mesh of model 600,800 mesh, 1000 mesh, 1200 mesh, 1500 mesh, 2000 mesh successively, Ran Hou
Polished successively with model W1.5, W1.0, W0.5 diamond polishing cream on polishing machine, as shown in (e) in Fig. 3；By each member
Part is fixed on the objective table of high vacuum coating unit, and NiSi functions are deposited with polished surface of the magnetron sputtering mode in ceramic matrix
Film 2, the thickness of NiSi function films 2 is 800nm, as shown in (f) in Fig. 3；Magnetron sputtering is used in high vacuum coating unit
Mode depositing NiSi function films 2 surface deposit SiO2Insulation protection film 1, wherein SiO2Insulation protection film 1 is thick
Spend for 1 μm, as shown in (g) in Fig. 3, shown in partial enlarged drawing such as Fig. 2 (a)；By the both positive and negative polarity of compensating wire 11 and parallel electricity
The corresponding entanglement of both positive and negative polarity of pole, with refractory inorganic adhesive II10 by its insulated enclosure in protection sleeve pipe 8, such as (h) in Fig. 3
It is shown, partial enlarged drawing such as Fig. 2 (b)；Finally, tapered thread mounting structure 9 is set in protection sleeve pipe 8, and tapered thread uses
NPT thread standards.
The sensor is applied to measurement and the shock tunnel model surface temperature of diesel engine piston surface transient temperature
Measurement, as shown in fig. 4-5, wherein, C in Fig. 5 represents to carry out surface temperature measurement, and D represents to carry out inside temperature measurement.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
Be confined to this, any one skilled in the art the invention discloses technical scope in, according to the utility model
Technical scheme and its inventive concept be subject to equivalent substitution or change, should all cover within the scope of protection of the utility model.
Claims (5)
- A kind of 1. sensor for measurement surface transient temperature, it is characterised in that including：Temperature-sensing element, diplopore ceramics pole, protection sleeve and compensating wire；Wherein described temperature-sensing element includes ceramic matrix, phase Mutual parallel the metal wire type parallel pole one being embedded in the ceramic matrix and metal wire type parallel pole two, be deposited on it is described It is thin that hot junction is formed on ceramic matrix end face and with the metal wire type parallel pole one and the overlap joint of metal wire type parallel pole two The function film of film and the insulation protection film for being deposited on the function film surface；Protection sleeve and the temperature-sensing element it Between sealing and cause pass through the diplopore ceramics pole between the metal wire type parallel pole one and metal wire type parallel pole two Insulation；Sealed between the compensating wire and protection sleeve.
- 2. the sensor according to claim 1 for measurement surface transient temperature, it is characterised in that：Tapered thread mounting structure is provided with the protection sleeve.
- 3. the sensor according to claim 1 for measurement surface transient temperature, it is characterised in that：The metal wire type parallel pole one is NiCr alloy materials, and the metal wire type parallel pole two is NiSi alloy materials Material.
- 4. the sensor according to claim 1 for measurement surface transient temperature, it is characterised in that：The function film is NiSi alloy materials；The insulation protection film is SiO2Material.
- 5. the sensor according to claim 1 for measurement surface transient temperature, it is characterised in that：The ceramic matrix uses cermet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720380164.0U CN206656812U (en) | 2017-04-12 | 2017-04-12 | A kind of sensor for measurement surface transient temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720380164.0U CN206656812U (en) | 2017-04-12 | 2017-04-12 | A kind of sensor for measurement surface transient temperature |
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| Publication Number | Publication Date |
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| CN206656812U true CN206656812U (en) | 2017-11-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063490A (en) * | 2017-04-12 | 2017-08-18 | 大连交通大学 | A kind of sensor and its preparation technology for measurement surface transient temperature |
| CN111595475A (en) * | 2020-05-22 | 2020-08-28 | 华中科技大学 | Renewable axial film thermocouple for transient temperature measurement and manufacturing method thereof |
-
2017
- 2017-04-12 CN CN201720380164.0U patent/CN206656812U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063490A (en) * | 2017-04-12 | 2017-08-18 | 大连交通大学 | A kind of sensor and its preparation technology for measurement surface transient temperature |
| CN111595475A (en) * | 2020-05-22 | 2020-08-28 | 华中科技大学 | Renewable axial film thermocouple for transient temperature measurement and manufacturing method thereof |
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