CN101938861B - Linear heat source type heater for protecting and heating plate devices - Google Patents
Linear heat source type heater for protecting and heating plate devices Download PDFInfo
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- CN101938861B CN101938861B CN 201010255460 CN201010255460A CN101938861B CN 101938861 B CN101938861 B CN 101938861B CN 201010255460 CN201010255460 CN 201010255460 CN 201010255460 A CN201010255460 A CN 201010255460A CN 101938861 B CN101938861 B CN 101938861B
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Abstract
The invention relates to a linear heat source type heater for protecting and heating plate devices, which belongs to the technical field of measuring devices and comprises a heating plate, a protecting plate, an electric heating wire and fixing pins, wherein the heating plate is fixedly arranged in the center of the protecting plate; one end of a plurality of fixing pins is radially arranged on the side surface of the heating plate; the other end of the fixing pins is positioned in a slotted hole of the protecting plate; and the electric heating wire sleeved with a ceramic sleeve is positioned in grooves of the heating plate and the protecting plate. The invention enhances the uniformity of the surface temperature of the linear heat source type heater, reduces the radial radiation heat transfer of the heating plate, and enhances the measurement accuracy of thermal conductivity.
Description
Technical field
What the present invention relates to is a kind of measurement mechanism technical field, specifically a kind of protective heat plate device line heat source formula well heater.
Background technology
At present, in research, exploitation, production and the application process of some thermal insulation materials, need to measure accurately the coefficient of heat conductivity of material.Because the protective heat plate device does not standardize with heating plate, at present, a lot of protective heat plate test device of thermal conductivity coefficients adopt square heater as the heating plate of high temperature side, caused heating plate corner location non-uniform temperature, greatly affect accuracy and the precision measured, be not enough to measure accurately the coefficient of heat conductivity of thermal insulation material.So, determining of the selection of heater types and heater strip embedded location, very crucial concerning protective heat plate measurement device solid material heat conductivity, directly have influence on the accuracy of test data with authoritative.
Through the prior art literature search is found; China Patent No. ZL88217498.3 disclosed " hot plate high-temp. conductometer with double-sample protection "; introduced a kind of hot plate high-temp. conductometer with double-sample protection of measuring non-metal solid heating coefficient or thermal resistance, Range of measuring temp is 500K～1000K.Well heater adopts carbofrax material, has not only improved probe temperature but also reduced cost; Primary heater adopts permanent wall temperature to exchange heating, and the mode of rear permanent hot-fluid DC heating has improved test speed; Outside tubular heater is made with the carbonization rod; And realized the accurate acquisition and processing of multichannel feeble signal with microcomputer.This invention does not illustrate that well heater adopts the position of which kind of type and heater strip location.
Further retrieval is found, China Patent No. ZL200620103469.9 disclosed " heat-pipe flat-plate type measuring instrument for coefficient of thermal conductivity ", and it adopts the upper end to be provided with the Dewar flask of flange, hangs proving installation in the Dewar flask.To have the good flat-plate heat pipe of average temperature performance as the hot cold-peace hot plate of conductometer, be arranged in the up and down both sides of sample, keep the isothermal surface of sample both sides; And adopt the processing mode that Dewar flask is vacuumized, reduced the heat loss through convection loss that adds heat.This invention does not illustrate that well heater adopts the position of which kind of type and heater strip location yet.
China Patent No. ZL200720063809.4 disclosed " a kind of good conductor thermal conductivity measuring instrument ", it adopts and contains good conductor Determination of conductive coefficients instrument, hot junction temperature control sensor, insulation material, cold junction temperature control sensor, conductor refrigeration sheet, well heater, heating radiator, base.Well heater is equipped with in the hot junction of detected materials, the end face of detected materials cold junction is close to conductor refrigeration sheet one side, another side and the heating radiator of conductor refrigeration sheet are close to, cold junction temperature control sensor and conductor refrigeration sheet are electrically connected with cold junction temperature control cable seat by cable, and cold junction temperature is set adjusting knob in order to regulate the needed temperature of detected materials cold junction.This invention does not illustrate that equally well heater adopts the position of which kind of type and heater strip location.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of protective heat plate device line heat source formula well heater is provided, improve the homogeneity of line heat source formula heater table surface temperature, reduced heating plate radiation heat transfer radially, improved the accuracy of thermal conductivity measurement.
The present invention is achieved by the following technical solutions, the present invention includes: heating plate, protective shield, electrical heating wire and fixing pin, wherein: heating plate is fixedly installed on the central authorities of protective shield, one end of some fixing pins radially is arranged at the side of heating plate, the other end of fixing pin is arranged in the slotted eye of protective shield, and cover has the electrical heating wire of porcelain bushing to be positioned at the groove of heating plate and protective shield.
The outside of described heating plate and protective shield inboard are respectively equipped with the triangle groove to reduce heating plate radiation heat transfer radially, have improved the even of heating plate test surfaces temperature field.
Described heating plate is provided with the first groove of mirror image symmetry, and this first groove comprises eight sections deep-slotted chip breakers, eight semicircle ramp pans and four sections straight-line grooves, and wherein: the two ends of semicircle ramp pan are connected with deep-slotted chip breaker or straight-line groove respectively.
The inwall radius of described the first groove is 1.5mm;
Described protective shield is provided with the second groove of mirror image symmetry, and this second groove comprises ten sections deep-slotted chip breakers and eight semicircle ramp pans, and wherein: the two ends of semicircle ramp pan link to each other with deep-slotted chip breaker respectively.
Described cover has the electrical heating wire of porcelain bushing to be embedded in the first groove and the second groove.
The inwall radius of described the second groove is 1.5mm.
Described fixedly slotted eye specifically is positioned at the medial surface of protective shield with 120 ° of settings.
The length of described fixing pin is 0.8mm, and this fixing pin is for radially arranging.
Compared with prior art.Square heating plate is owing to adopting the square arrangement electrical heating wire, caused the corner location non-uniform temperature, Effective Raise of the present invention the homogeneity of line heat source formula heater table surface temperature, reduced heating plate radiation heat transfer radially, making heating plate is one dimensional heat transfer, has improved the accuracy of thermal conductivity measurement.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the heating board structure front view.
Fig. 3 is the heating board structure vertical view.
Fig. 4 is the protection plate structure front view.
Fig. 5 is the protection plate structure vertical view.
Fig. 6 is fixing pin structure partial sectional view.
Fig. 7 is the fixing pin detail of construction.
Fig. 8 is fixing pin detail of construction right view.
Fig. 9 is fixing pin detail of construction vertical view.
Embodiment
The below elaborates to embodiments of the invention, and the present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the present embodiment comprises: two heating plates 1, two protective shields 2, bolt 3, fixing pin 4 and electrical heating wire (not shown), wherein: heating plate 1 is fixedly installed on the central authorities of protective shield 2, one end of fixing pin 4 radially is arranged at the side of heating plate 1, the other end of fixing pin 4 is arranged in the slotted eye 11 of protective shield 2, and cover has the electrical heating wire of porcelain bushing to be positioned at the first groove 5 and second groove 6 of heating plate 1 and protective shield 2.
Being carved with the cross section around the described heating plate 1 is that triangular heat plate groove 7 is with effective minimizing radiation heat transfer radially.
As shown in Figure 2, described heating plate 1 is provided with the first groove 5 of mirror image symmetry, and this first groove 5 comprises eight sections deep-slotted chip breakers, eight semicircle ramp pans and four sections straight-line grooves, and wherein: the two ends of semicircle ramp pan are connected with deep-slotted chip breaker or straight-line groove respectively;
Being carved with the cross section around the described heating plate 1 is that triangular heat plate groove 7 is with effective minimizing radiation heat transfer radially.
The diameter of described heating plate 1 is 119.8mm, and is by M3 bolt precession threaded hole 6 that heating plate 1 is fixing.
Described heating plate groove 7 is in the heating plate outside, and the cross section is triangular in shape.
As shown in Figure 4, described protective shield 2 is provided with the second groove of mirror image symmetry, and this second groove comprises ten sections deep-slotted chip breakers and eight semicircle ramp pans, and wherein: the two ends of semicircle ramp pan link to each other with deep-slotted chip breaker respectively.
The described protective shield 2 inboard protective shield grooves 10 of carving are with effective minimizing heating plate 1 radiation heat transfer radially, and the cross section of described protective shield groove 10 is triangular in shape.
The radius of described the second groove 5 is 1.5mm.
Be respectively equipped with the first threaded hole 6 and the second threaded hole 9 on described heating plate 1 and the protective shield 2 so that bolt 3 to be set, described the first threaded hole 6 and the second threaded hole 9 are T-shaped hole and uniform with 45° angle.
Described heating plate 1 and protective shield 2 adopt the T2 oxygenless copper material to make.
As shown in Figure 6, described fixedly slotted eye 11 be 120 ° uniform.Shown in Fig. 7-9, described fixing pin 4 is for to make with externally threaded austenite 304 stainless steels.
The present embodiment advantage comprises: (1) has adopted circular heating plate, by rational layout groove structure, makes heating plate test surfaces more uniform temperature.(2) adopted circular protective hot, by rational layout groove structure, made the protective shield test show that temperature is even, radially dispelled the heat to reduce heating plate by the power adjustments temperature of rational control electrical heating wire, guaranteed that heating plate is the one dimension heat radiation.(3) adopted fixing pin, adjusted the degree of depth of fixing pin precession threaded hole, heating plate is rotated to an angle to be fixed in the inboard slotted eye of protective shield, and heating plate is fixed in the middle of the protective shield exactly.(4) adopt 3 austenite 304 stainless steel fixing pins that coefficient of heat conductivity is low, heating plate is fixed in the middle of the protective shield, greatly reduce because thermal contact conductance causes the variation in heating plate outer ledge temperature field, improved the homogeneity of heating plate test surfaces temperature.(5) be the triangle groove by having done respectively the cross section in the heating plate outside and protective shield inboard, can effectively reduce heating plate radiation heat transfer radially, improved the even of heating plate test surfaces temperature field.
Claims (6)
1. a protective heat plate device is with line heat source formula well heater, comprise: heating plate, protective shield, electrical heating wire and fixing pin, wherein: heating plate is fixedly installed on the central authorities of protective shield, heating plate and protective shield are in the same plane, one end of some fixing pins is along the side that radially is arranged at circular heating plate of circular heating plate, the other end of fixing pin is arranged in the slotted eye of protective shield, cover has the electrical heating wire of porcelain bushing to be positioned at the first groove and second groove of heating plate and protective shield, it is characterized in that:
Described heating plate is provided with the first groove of mirror image symmetry, and this first groove comprises eight sections deep-slotted chip breakers, eight semicircle ramp pans and four sections straight-line grooves, and wherein: the two ends of semicircle ramp pan are connected with deep-slotted chip breaker or straight-line groove respectively;
Described protective shield is provided with the second groove of mirror image symmetry, and this second groove comprises ten sections deep-slotted chip breakers, eight semicircle ramp pans, and wherein: the two ends of semicircle ramp pan link to each other with deep-slotted chip breaker respectively.
2. described protective heat plate device is characterized in that with line heat source formula well heater according to claim 1, and the cross section of the inboard groove of the outside of described heating plate and protective shield is triangular in shape.
3. described protective heat plate device is characterized in that with line heat source formula well heater according to claim 1, and the inwall radius of described the first groove is 1.5mm.
4. described protective heat plate device is characterized in that with line heat source formula well heater according to claim 1, and the inwall radius of described the second groove is 1.5mm.
5. described protective heat plate device is characterized in that with line heat source formula well heater according to claim 1, and the slotted eye of described protective shield specifically is positioned at the medial surface of protective shield, between the slotted eye with 120 ° of spaced sets.
6. described protective heat plate device is characterized in that with line heat source formula well heater according to claim 1, and the length of described fixing pin is 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010255460 CN101938861B (en) | 2010-08-17 | 2010-08-17 | Linear heat source type heater for protecting and heating plate devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010255460 CN101938861B (en) | 2010-08-17 | 2010-08-17 | Linear heat source type heater for protecting and heating plate devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101938861A CN101938861A (en) | 2011-01-05 |
| CN101938861B true CN101938861B (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010255460 Expired - Fee Related CN101938861B (en) | 2010-08-17 | 2010-08-17 | Linear heat source type heater for protecting and heating plate devices |
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| Country | Link |
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| CN (1) | CN101938861B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108633114A (en) * | 2018-06-15 | 2018-10-09 | 四川深源钼业科技股份有限公司 | A kind of electric heating Si-Mo rod with bottom plate |
| CN108882413B (en) * | 2018-08-23 | 2024-01-09 | 镇江裕太防爆电加热器有限公司 | Electrothermal tube connection structure of combined high-voltage heater |
| CN114813827B (en) * | 2022-04-25 | 2022-10-25 | 河海大学 | Micro-thermal test device and method for determining thermophysical property parameters of aquifer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2060883U (en) * | 1989-11-29 | 1990-08-22 | 东南大学 | Main heater and protective heater for plate heat-transfer |
| CN2457831Y (en) * | 2000-12-20 | 2001-10-31 | 潍坊润泰智能电气有限公司 | Electric heater |
| CN2672652Y (en) * | 2003-12-26 | 2005-01-19 | 鸿富锦精密工业（深圳）有限公司 | Hot flow producing device |
| CN1916614A (en) * | 2005-08-19 | 2007-02-21 | 富准精密工业(深圳)有限公司 | Device for simulating heat source |
| JP4185028B2 (en) * | 2004-08-18 | 2008-11-19 | エスアイアイ・ナノテクノロジー株式会社 | Differential scanning calorimeter with cooling mechanism |
-
2010
- 2010-08-17 CN CN 201010255460 patent/CN101938861B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2060883U (en) * | 1989-11-29 | 1990-08-22 | 东南大学 | Main heater and protective heater for plate heat-transfer |
| CN2457831Y (en) * | 2000-12-20 | 2001-10-31 | 潍坊润泰智能电气有限公司 | Electric heater |
| CN2672652Y (en) * | 2003-12-26 | 2005-01-19 | 鸿富锦精密工业（深圳）有限公司 | Hot flow producing device |
| JP4185028B2 (en) * | 2004-08-18 | 2008-11-19 | エスアイアイ・ナノテクノロジー株式会社 | Differential scanning calorimeter with cooling mechanism |
| CN1916614A (en) * | 2005-08-19 | 2007-02-21 | 富准精密工业(深圳)有限公司 | Device for simulating heat source |
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| Publication number | Publication date |
|---|---|
| CN101938861A (en) | 2011-01-05 |
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Granted publication date: 20130102 Termination date: 20200817 |