CN101695865A - Melt temperature sensor with characteristic of quick response under conditions of high temperature and high pressure - Google Patents
Melt temperature sensor with characteristic of quick response under conditions of high temperature and high pressure Download PDFInfo
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- CN101695865A CN101695865A CN200910153553A CN200910153553A CN101695865A CN 101695865 A CN101695865 A CN 101695865A CN 200910153553 A CN200910153553 A CN 200910153553A CN 200910153553 A CN200910153553 A CN 200910153553A CN 101695865 A CN101695865 A CN 101695865A
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- thermocouple
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- melt temperature
- temperature
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Abstract
The invention discloses a melt temperature sensor with the characteristic of quick response under the conditions of high temperature and high pressure, which relates to a temperature sensor for measuring temperature according to a changing rule of the thermal electrical potential of a thermocouple along with the temperature. The melt temperature sensor solves the problems of slow response characteristic of temperature measurement, low measurement precision, and the like of the prior art in a high-temperature and high-pressure environment. The melt temperature sensor comprises a steel sleeve tube, a fixing nut, a thermocouple, silver, a shrinkable tube, a double-hole ceramic tube and a binding agent, wherein the thermocouple is sleeved in the steel sleeve tube through the double-hole ceramic tube; the head part of the thermocouple is welded by the silver; and connecting wires of the positive pole and the negative pole of the thermocouple are connected to the outside through holes of the double-hole ceramic tube and the shrinkable tube. The melt temperature sensor with the characteristic of quick response under the conditions of high temperature and high pressure has the advantages of simple structure, small size, low cost, quick response characteristic, and the like and is mainly used for measuring the temperature of a melt in a die cavity of an injection molding machine under the conditions of high temperature and high pressure.
Description
[affiliated technical field]
Sensor of the present invention relates to a kind of thermometric instrument, especially under the environment of HTHP, belongs to the temperature survey field.
[background technology]
Temperature is one of most important procedure parameter, and the measurement response characteristic of temperature and precision have significant effects to the quality of process control.Computer technology is impelled the fast development of research and production process monitoring and automatic technology, especially in the injection (mo(u)lding) machine field, temperature signal measurement response characteristic in the die cavity and certainty of measurement has been proposed new requirement.
The most widely used detector unit is thermocouple and thermal resistance, and this has been a mature technique very.Yet, in the die cavity of injection (mo(u)lding) machine, be under the environment of HTHP, require temperature transducer to have characteristics such as high pressure resistant, high temperature resistant, that response characteristic is fast, certainty of measurement is high, installation dimension is little, the location is convenient, this is a suitable complicated technology difficult problem.In existing technology, have in the commodity melt temperature sensor that producer can provide, sensor thermometric response characteristic is slow, and installation dimension is bigger, and cost is than higher.
[summary of the invention]
Purpose of the present invention and task are will overcome prior art to exist that response characteristic is slow, the sensor installation dimension big, the location is installed than shortcomings such as difficulties, and provide a kind of energy accurate measurement mode cavity temperature, accurate location and fixing, the thermocouple melt temperature sensor that cost is low, special proposition technical solution of the present invention.
Basic design of the present invention is that thermocouple is installed in the diplopore earthenware, the thermocouple head contacts with tested HTHP melt, the thermoelectrical potential that produces is passed in the earthenware signal is spread out of, the method that the thermocouple head welds by silver guarantees the reliable of sensor head, the while good heat conduction effect, the diplopore earthenware plays two effects: one is heat insulation, the mutual heat transmission of mould of isolated sensor and sensor installation; The another one effect is to make the sensor energy high pressure resistant, simultaneously also can be high temperature resistant.
The melt temperature sensor that has fast response characteristic under a kind of HTHP proposed by the invention is made up of steel sleeve (1), hold-down nut (2), silver (3), thermocouple (4), adhesive (5), diplopore earthenware (6), heat-shrink tube (7); It is characterized in that: thermocouple (3) passes thermoplastic tube (7) signal is spread out of, adhesive (5) is assisted the head place of thermocouple (4) and is fixed on the diplopore earthenware (6), diplopore earthenware (6) is enclosed within the steel sleeve (1), form an integral body by adhesive (4), by hold-down nut (2) melt temperature sensor that has fast response characteristic under the HTHP is positioned in the time of installation; The head of thermocouple (4) welds by silver (3), and two thermocouple conductors are connected, and becomes the temperature element of sensor; The front end of thermocouple (4) is fixed by binding agent (5) and diplopore earthenware (6), and that adhesive (5) has is high temperature resistant, high pressure, insulation, function such as ageing-resistant, makes sensor front end smooth simultaneously; The 0-0.2MM gap is fixing by binding agent (5) between diplopore earthenware (6) and steel sleeve (2), and diplopore earthenware (6) mainly is the pressure that bears vertical direction, and the power of stretching is very little; Sensor positions by hold-down nut (2), cooperates by screw thread between hold-down nut (2) and mould; Hold-down nut (2) is not a standard component, need operate by the instrument of special use.
Effect of the present invention is that the very little thermocouple temperature sensor of a kind of diameter is because thermojunction thermal capacity is little, have the fast characteristics of the response characteristic of measurement, when injection (mo(u)lding) machine is injected when making product, the polymer melt of high-temperature fusion pours and produces TRANSIENT HIGH TEMPERATURE in the die cavity, simultaneously the earthenware of sensor and steel bushing structure can be born the 0-2000bar surge and indeformable, so can be used for carrying out the measurement of die cavity temperature.
[description of drawings]
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structure chart that has the melt temperature sensor of fast response characteristic under the HTHP of the present invention.Be 1-steel sleeve wherein, 2-hold-down nut, 3-silver, 4-thermocouple, 5-adhesive, 6-diplopore earthenware, 7-heat-shrink tube.
Fig. 2 is the head record drawing of sensor, i.e. the head construction of thermocouple (4).The 1-positive pole, 2-negative pole, 3-silver.
Fig. 3 is the structure chart of hold-down nut (2), and screw thread is at the cylindrical place, and inside is through hole.
[specific embodiment]
At first, be placed on the argon arc welding stage, weld with silver (3), as shown in Figure 2 positive and negative two leads of thermocouple (4); Then the both positive and negative polarity lead with thermocouple (4) passes diplopore earthenware (6); With heat-shrink tube (7) on the both positive and negative polarity wire sleeve of thermocouple (4), and the 300-400 ℃ of hot blast that sprays with air-heater adds heat setting to thermoplastic tube (7); Then, guarantee when being coated with head that diplopore earthenware (6) and thermocouple (4) head are smooth smooth with the periphery and the head coated with adhesive (5) of diplopore earthenware (6); Then the positive negative conductor of thermocouple (4) the big nose end from steel sleeve (1) is penetrated, come out from small bore end, diplopore earthenware (6) is assembled in the steel sleeve (1), concrete structure is seen Fig. 1; The mating part of the front end of thermocouple (4) and diplopore earthenware (6) under regulating, guarantee that the head of thermocouple (4) is adjacent to the end face of earthenware at the center, and the outside is attractive in appearance; At last in cold curing.
During use, elder generation according to screwed hole that matches of dimensioned of sensor of the present invention, puts into steel sleeve (1) in the die cavity of injection machine, put hold-down nut (2) from steel sleeve (1) tail end, is enclosed within on the hold-down nut (2) with special erecting tools and tightens.Unclamp hold-down nut (2) when tearing open earlier, sensor of the present invention can take out under the normal condition, when between causing owing to reasons such as processing cooperating during tension, can it be taken out by the screw thread of steel sleeve (2) tail end.
Claims (5)
1. have the melt temperature sensor of fast response characteristic under the HTHP, formed by steel sleeve, hold-down nut, silver, thermocouple, heat-shrink tube, diplopore earthenware, adhesive; It is characterized in that: thermocouple (4) passes thermoplastic tube (7) signal is spread out of, adhesive (5) is fixed on the head place of thermocouple (4) on the diplopore earthenware (6), diplopore earthenware (6) is enclosed within steel sleeve (1) lining, form an integral body by adhesive (5), by hold-down nut (2) melt temperature sensor that has fast response characteristic under the HTHP is positioned in the time of installation.
2. have the melt temperature sensor of fast response characteristic under the HTHP according to claim 1, it is characterized in that: the head of thermocouple (4) welds by silver (3), and two thermocouple conductors are connected, and becomes the temperature element of sensor.
3. the melt temperature sensor that has fast response characteristic under the HTHP according to claim 1, it is characterized in that: the front end of thermocouple (4) is fixed by adhesive (5) and diplopore earthenware (6), that adhesive (5) has is high temperature resistant, high pressure, insulation, function such as ageing-resistant, makes sensor front end smooth simultaneously.
4. the melt temperature sensor that has fast response characteristic under the HTHP according to claim 1, it is characterized in that: diplopore earthenware (6) is a matched in clearance with steel sleeve (2), fit clearance is 0-0.2MM, fixing by adhesive (5), diplopore earthenware (6) mainly is the pressure that bears vertical direction, and the power of stretching is very little.
5. the melt temperature sensor that has fast response characteristic under the HTHP according to claim 1, it is characterized in that: the melt temperature sensor that has fast response characteristic under the HTHP of the present invention is to position by hold-down nut (2), cooperating by screw thread between hold-down nut (2) and mould, is matched in clearance between hold-down nut (2) and steel sleeve (1); Hold-down nut (2) is not a standard component, need operate by the instrument of special use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910153553A CN101695865A (en) | 2009-10-19 | 2009-10-19 | Melt temperature sensor with characteristic of quick response under conditions of high temperature and high pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910153553A CN101695865A (en) | 2009-10-19 | 2009-10-19 | Melt temperature sensor with characteristic of quick response under conditions of high temperature and high pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101695865A true CN101695865A (en) | 2010-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910153553A Pending CN101695865A (en) | 2009-10-19 | 2009-10-19 | Melt temperature sensor with characteristic of quick response under conditions of high temperature and high pressure |
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| CN (1) | CN101695865A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398798A (en) * | 2013-08-26 | 2013-11-20 | 中国科学院地球化学研究所 | Thermocouple temperature measuring device for high-pressure environment |
| CN105651618A (en) * | 2016-03-01 | 2016-06-08 | 内蒙古科技大学 | Method for disposing thermocouple wires on test specimen |
| CN106017711A (en) * | 2016-07-05 | 2016-10-12 | 中国第汽车股份有限公司 | Power motor stator and rotor thermocouple sensor for new energy vehicle |
| 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 |
| CN108387322A (en) * | 2018-01-31 | 2018-08-10 | 中国航发北京航空材料研究院 | A kind of thermocouple and preparation method thereof for titanium investment casting melt thermometric |
| CN111473875A (en) * | 2020-04-15 | 2020-07-31 | 大连交通大学 | Microminiature temperature sensor for transient high temperature measurement and manufacturing method thereof |
-
2009
- 2009-10-19 CN CN200910153553A patent/CN101695865A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398798A (en) * | 2013-08-26 | 2013-11-20 | 中国科学院地球化学研究所 | Thermocouple temperature measuring device for high-pressure environment |
| CN103398798B (en) * | 2013-08-26 | 2015-09-30 | 中国科学院地球化学研究所 | A kind of thermocouple temperature measuring apparatus for hyperbaric environment |
| CN105651618A (en) * | 2016-03-01 | 2016-06-08 | 内蒙古科技大学 | Method for disposing thermocouple wires on test specimen |
| CN105651618B (en) * | 2016-03-01 | 2018-09-18 | 内蒙古科技大学 | A method of thermocouple wire is configured at sample |
| CN106017711A (en) * | 2016-07-05 | 2016-10-12 | 中国第汽车股份有限公司 | Power motor stator and rotor thermocouple sensor for new energy vehicle |
| 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 |
| CN108387322A (en) * | 2018-01-31 | 2018-08-10 | 中国航发北京航空材料研究院 | A kind of thermocouple and preparation method thereof for titanium investment casting melt thermometric |
| CN111473875A (en) * | 2020-04-15 | 2020-07-31 | 大连交通大学 | Microminiature temperature sensor for transient high temperature measurement and manufacturing method thereof |
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Open date: 20100421 |