CN204988533U - A temperature measuring device that in is used for long and narrow space of small scale - Google Patents
A temperature measuring device that in is used for long and narrow space of small scale Download PDFInfo
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- CN204988533U CN204988533U CN201520754591.1U CN201520754591U CN204988533U CN 204988533 U CN204988533 U CN 204988533U CN 201520754591 U CN201520754591 U CN 201520754591U CN 204988533 U CN204988533 U CN 204988533U
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Abstract
The utility model relates to an experimental parameter measurement technical field of arc tunnel, concretely relates to a temperature measuring device that in is used for long and narrow space of small scale, include: the casing, it is a long and narrow open -ended staving structure that has, the open end is the free end of casing, and the other end is the stiff end of casing, and temperature element, its one end to extend and run through in the casing the bottom surface of staving structure sets up, temperature element's the other end is provided with the point for measuring temperature, just the point for measuring temperature is outstanding the opening part of staving structure. The utility model discloses temperature measurement can realize carrying on in small scale long and narrow space, mainly used in to the wind tunnel test the thermal -insulated temperature parameters of solar heat protection material the accurate measurement carries out, measurement accuracy is high.
Description
Technical field
The utility model relates to for arc tunnel test parameters field of measuring technique, is specifically related to a kind of for the temperature measuring equipment in small scale long and narrow space.
Background technology
Stagnation point ablation is an important experimental technique in arc tunnel test, is examination heat proof material ablation performance test method the most directly and accurately, thus in Aerodynamic Heating ground simulation test often application stagnation point ablation technology heat insulation material is screened and checks and accepts.Temperature is the important parameter of stagnation point ablation test, directly reacts the heat-proof quality of heat insulation material, so Measurement accuracy temperature is the key of test.
As Fig. 1, stagnation point ablation test model mostly is right cylinder subassembly, the examination section that front portion is made for heat insulation material, and diameter is larger; Rear portion is the linkage section that common material is made, and diameter is less, and there is thermometric through hole inside.Traditional experimental technique thermopair is arranged in heat insulation material inside to carry out thermometric, but updating and raising to test figure accuracy requirement due to heat insulation material, the temperature measurement location at present in test is needed as the surface of contact of examination section and linkage section.Due to the needs of actual installation and structural strength, the diameter of linkage section thermometer hole is generally 10mm-20mm, but length reaches 30mm-60mm, even longer.Such thermometer hole is exactly the small scale long and narrow space that a length-diameter ratio is greater than 3, all cannot complete the layout of thermopair with the welding of routine or technology for applying, so need to design a kind of simple and reliable temperature measuring equipment.
Utility model content
An object of the present utility model solves at least the problems referred to above, and provide the advantage will illustrated at least below.
It is a kind of for the temperature measuring equipment in small scale long and narrow space that the utility model also has an object to be to provide, can be implemented in small scale long and narrow space and carry out temperature survey, be mainly used in carrying out Measurement accuracy to the adiabatic temperature parameter of heat insulation material in wind tunnel test, measuring accuracy is high.
In order to realize, according to these objects of the present utility model and other advantage, providing a kind of for the temperature measuring equipment in small scale long and narrow space, comprising:
Housing, it is a long and narrow bucket body structure with an opening, and described openend is the free end of housing, and the other end is the stiff end of housing; And
Temperature element, its one end extends and runs through the bottom surface setting of described bucket body structure in described housing, and the other end of described temperature element is provided with point for measuring temperature, and described point for measuring temperature gives prominence to the opening part of described bucket body structure.
Preferably, wherein, the length-diameter ratio of described housing is greater than 3.
Preferably, wherein, described temperature element is at least one thermopair, and described temperature element is " U " shape, and described point for measuring temperature is arranged on the bottom of " U " shape.
Preferably, wherein, also comprise:
Screw, its lower end is threaded with the screw on the outer face of the stiff end of described housing, and the stiff end that described housing is given prominence in the upper end of described screw is arranged.
Preferably, wherein, also comprise:
Heat insulation chock, it is arranged in " U " shape opening of described temperature element, and on the embedded lateral wall being arranged on the part of described heat insulation chock of the end arms of two straight shapes of " U " shape of described temperature element, the lateral wall of other parts of described heat insulation chock optionally leans with the madial wall of described bucket body structure.
Preferably, wherein, the area that the madial wall of described bucket body structure leans be less than described heat insulation chock outer side surface long-pending 1/4.
Preferably, wherein, the length of described heat insulation chock and the length of described bucket body structure adapt.
Preferably, wherein, described heat insulation chock adopts ceramic base porous heat insulation material to make, and coefficient of heat conductivity is less than 0.1W/mK.
Preferably, wherein, also comprise:
Annular groove, it is arranged on the periphery wall of the stiff end of described housing; And
O-ring seal, it is set in described annular groove;
Wherein, the external diameter of described O-ring seal is greater than the external diameter of described housing.
Preferably, wherein, described housing adopts fiberglass or high silica material to make, and coefficient of heat conductivity is less than 0.5W/mK.
The utility model at least comprises following beneficial effect:
(1) thermopair is sent into small scale long and narrow space inside by the heat insulation chock of big L/D ratio and is carried out temperature survey by the utility model, meets test needs.
(2) the utility model by O-ring seal with stagnation point ablation test model thermometric through hole inwall between friction force fix temperature element, the point for measuring temperature on temperature element is close to thermometric face setting, point for measuring temperature accurate positioning, solid and reliable, easy to operate;
(3) in the utility model, the straight shaped end arm of thermopair is embedded is arranged on heat insulation chock sidewall, achieves small size multipoint temperature measuring, also ensure that and does not contact with each other between two groups of thermopairs even more than two, non-interference;
(4) material that the utility model employing heat-proof quality is good, as heat insulation chock and housing, reduces by the heat of temperature measuring equipment conduction loss, improves temperature measurement accuracy.
In sum, the utility model structure is simple, practical and convenient, can improve thermometric precision, is applicable to large-scale production and uses.
Part is embodied by explanation below by other advantage of the present utility model, target and feature, part also will by research and practice of the present utility model by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is the structural representation of stationary point of the present utility model test model;
Fig. 2 is the explosive view of an embodiment of the present utility model;
Fig. 3 is the schematic diagram after the assembling of an embodiment of the present utility model;
Fig. 4 is that in an embodiment of the present utility model, the utility model is arranged on the cross-sectional view in the test model of stationary point.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to instructions word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
As shown in figures 1 and 3, the utility model provides a kind of for the temperature measuring equipment in small scale long and narrow space, comprising:
Housing 3, it is a long and narrow bucket body structure with an opening, and described openend is the free end of housing, and the other end is the stiff end 9 of housing; And
Temperature element 5 and 6, its one end extends and runs through the bottom surface setting of described bucket body structure in described housing, and the other end of described temperature element is provided with point for measuring temperature 7 and 8, and described point for measuring temperature gives prominence to the opening part of described bucket body structure.
As shown in Figure 1, stagnation point ablation test model mostly is right cylinder subassembly, the examination section 12 that front portion is made for heat insulation material, and the free end of examination section is the face of burning 13 of heat insulation material, and the diameter of examination section is larger, examine the linkage section 11 that the other end of section connection common material is made, diameter is less, and there is thermometric through hole 15 inside, temperature measurement location in current test is needed as the surface of contact 14 of examination section and linkage section, in such scheme, the free end of described housing inserts wherein towards thermometric through hole, make point for measuring temperature and surface of contact against, to carry out temperature test, wherein one end of temperature element is connected with the acquisition system of the temperature in the external world after running through the bottom surface of described bucket body structure, carry out data acquiring and recording (as shown in Figure 4), and, conveniently install, be provided with through hole to extend in housing for one end of temperature element in the bottom of bucket body structure.
As shown in Figure 2, in one embodiment, the length-diameter ratio of described housing is greater than 3.In such scheme, define the length of housing and the ratio of its cross-sectional diameter, so just be more suitable for existing stagnation point ablation test model, and need not more existing stagnation point ablation test model be improved, well can carry out combination assembling and better adiabatic temperature test is carried out to heat insulation material.
As shown in Figure 2, in one embodiment, described temperature element is at least one thermopair, and described temperature element is " U " shape, and described point for measuring temperature is arranged on the bottom of " U " shape.In such scheme, thermopair has two, and it is " U " shape, and to adapt to the structure needs of the length-diameter ratio of housing, the opening that point for measuring temperature can also be realized to give prominence to housing is arranged, and structure is simple, and manufacturing technique requirent is not high yet.
As shown in Figure 3, in one embodiment, also comprise:
Screw 1, its lower end is threaded with the screw on the outer face of the stiff end of described housing, and the stiff end that described housing is given prominence in the upper end of described screw is arranged.Screw adopts engagement thread to be connected to the stiff end of housing.
As shown in Figure 2, in one embodiment, also comprise:
Heat insulation chock 4, it is arranged in " U " shape opening of described temperature element, and on the embedded lateral wall being arranged on the part of described heat insulation chock of the end arms of two straight shapes of " U " shape of described temperature element, the lateral wall of other parts of described heat insulation chock optionally leans with the madial wall of described bucket body structure.
In such scheme, as shown in Figure 2, heat insulation chock comprises six major surfaces, and two surfaces of anterior exposed end and paste-side, rear portion are plane, about two surfaces are thermopair plane of arrangement, and two upper lower camber sides are mating surfaces of the free end inside surface of same housing; About two surfaces of described heat insulation chock arrange two semi-circular recesses run through respectively, and the spacing of same surperficial two groove center axis is greater than the thermopair I 5 of 2 times and the diameter sum of thermopair II 6; The radius-of-curvature of two upper lower camber sides of described heat insulation chock is identical, all equals the interior surface curvature radius of the free end of housing; The portion outboard wall of heat insulation chock and the madial wall of housing adopt insulating gel to be connected; Thermopair 5 and thermopair 6 are pasted onto in the semi-circular recesses on heat insulation chock sidewall by insulating gel.
In one embodiment, the area that the madial wall of described bucket body structure leans be less than described heat insulation chock outer side surface long-pending 1/4.In such scheme, reduce the contact of heat insulation chock and housing as far as possible, contact to reduce surface of contact the heat transfer caused with temperature element, make detected temperatures value more accurate.
As shown in Figure 3, in one embodiment, the length of described heat insulation chock and the length of described bucket body structure adapt.
In one embodiment, described heat insulation chock adopts ceramic base porous heat insulation material to make, and coefficient of heat conductivity is less than 0.1W/mK.
As shown in Figure 3, in one embodiment, also comprise:
Annular groove, it is arranged on the periphery wall of the stiff end of described housing; And
O-ring seal 2, it is set in described annular groove;
Wherein, the external diameter of described O-ring seal is greater than the external diameter of described housing.
In such scheme, O-ring seal is quality of rubber materials, and O-ring seal is ring texture, and its width is identical with the width of described annular groove, and its internal diameter is less than the groove diameter of the stiff end of housing, and its external diameter is larger than the free end external diameter of housing; The outside surface of described O-ring seal and two sidewalls all arrange 45 ° of chamferings, so that testing staff plugs operation of the present utility model easily from thermometer hole.
In one embodiment, described housing adopts fiberglass or high silica material to make, and coefficient of heat conductivity is less than 0.5W/mK.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in instructions and embodiment utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. for the temperature measuring equipment in small scale long and narrow space, it is characterized in that, comprising:
Housing, it is a long and narrow bucket body structure with an opening, and described openend is the free end of housing, and the other end is the stiff end of housing; And
Temperature element, its one end extends and runs through the bottom surface setting of described bucket body structure in described housing, and the other end of described temperature element is provided with point for measuring temperature, and described point for measuring temperature gives prominence to the opening part of described bucket body structure.
2. as claimed in claim 1 for the temperature measuring equipment in small scale long and narrow space, it is characterized in that, the length-diameter ratio of described housing is greater than 3.
3. as claimed in claim 1 for the temperature measuring equipment in small scale long and narrow space, it is characterized in that, described temperature element is at least one thermopair, and described temperature element is " U " shape, and described point for measuring temperature is arranged on the bottom of " U " shape.
4. as claimed in claim 1 for the temperature measuring equipment in small scale long and narrow space, it is characterized in that, also comprise:
Screw, its lower end is threaded with the screw on the outer face of the stiff end of described housing, and the stiff end that described housing is given prominence in the upper end of described screw is arranged.
5. as claimed in claim 4 for the temperature measuring equipment in small scale long and narrow space, it is characterized in that, also comprise:
Heat insulation chock, it is arranged in " U " shape opening of described temperature element, and on the embedded lateral wall being arranged on the part of described heat insulation chock of the end arms of two straight shapes of " U " shape of described temperature element, the lateral wall of other parts of described heat insulation chock optionally leans with the madial wall of described bucket body structure.
6. as claimed in claim 5 for the temperature measuring equipment in small scale long and narrow space, it is characterized in that, the area that the madial wall of described bucket body structure leans be less than described heat insulation chock outer side surface long-pending 1/4.
7. as claimed in claim 5 for the temperature measuring equipment in small scale long and narrow space, it is characterized in that, the length of described heat insulation chock and the length of described bucket body structure adapt.
8. as claimed in claim 5 for the temperature measuring equipment in small scale long and narrow space, it is characterized in that, described heat insulation chock adopts ceramic base porous heat insulation material to make, and coefficient of heat conductivity is less than 0.1W/mK.
9., as claimed in claim 8 for the temperature measuring equipment in small scale long and narrow space, it is characterized in that,
Also comprise:
Annular groove, it is arranged on the periphery wall of the stiff end of described housing; And
O-ring seal, it is set in described annular groove;
Wherein, the external diameter of described O-ring seal is greater than the external diameter of described housing.
10. as claimed in claim 3 for the temperature measuring equipment in small scale long and narrow space, it is characterized in that, described housing adopts fiberglass or high silica material to make, and coefficient of heat conductivity is less than 0.5W/mK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520754591.1U CN204988533U (en) | 2015-09-25 | 2015-09-25 | A temperature measuring device that in is used for long and narrow space of small scale |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520754591.1U CN204988533U (en) | 2015-09-25 | 2015-09-25 | A temperature measuring device that in is used for long and narrow space of small scale |
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| CN204988533U true CN204988533U (en) | 2016-01-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151997A (en) * | 2017-11-29 | 2018-06-12 | 中国航天空气动力技术研究院 | A kind of stationary point hot-fluid and the common measuring device of stagnation pressure and measuring method |
| CN114264493A (en) * | 2021-12-09 | 2022-04-01 | 中国航天空气动力技术研究院 | Multipurpose water-cooling stagnation point measuring probe for pneumatic heat ground simulation test |
| CN116952526A (en) * | 2023-09-20 | 2023-10-27 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel ablation test model |
-
2015
- 2015-09-25 CN CN201520754591.1U patent/CN204988533U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151997A (en) * | 2017-11-29 | 2018-06-12 | 中国航天空气动力技术研究院 | A kind of stationary point hot-fluid and the common measuring device of stagnation pressure and measuring method |
| CN108151997B (en) * | 2017-11-29 | 2019-08-09 | 中国航天空气动力技术研究院 | A kind of stationary point hot-fluid and the common measuring device and measuring method of stagnation pressure |
| CN114264493A (en) * | 2021-12-09 | 2022-04-01 | 中国航天空气动力技术研究院 | Multipurpose water-cooling stagnation point measuring probe for pneumatic heat ground simulation test |
| CN116952526A (en) * | 2023-09-20 | 2023-10-27 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel ablation test model |
| CN116952526B (en) * | 2023-09-20 | 2023-12-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel ablation test model |
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