CN203688695U - Hot air ageing oven used for cable - Google Patents
Hot air ageing oven used for cable Download PDFInfo
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- CN203688695U CN203688695U CN201320892616.5U CN201320892616U CN203688695U CN 203688695 U CN203688695 U CN 203688695U CN 201320892616 U CN201320892616 U CN 201320892616U CN 203688695 U CN203688695 U CN 203688695U
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- heating chamber
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- cable
- hot air
- ageing oven
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Abstract
The utility model discloses a hot air ageing oven used for a cable. The hot air ageing oven used for the cable is characterized in that a liner of the ageing oven is equipped with a heating chamber and a plurality of sample test-piece pipes, the top of the heating chamber is equipped with a plurality of exhaust through holes, and the bottom is equipped with an air inflow through hole; an air inflow hole of a box body is connected with the air inflow through hole of the heating chamber via a pipeline and is connected with a gas flowmeter, and the sample test-piece pipes are arranged between the exhaust through holes of the heating chamber and an exhaust port of the box body; a gas buffer device, a heater and a centrifugal fan are arranged inside the heating chamber, the gas buffer device is arranged above the air inflow through hole, the centrifugal fan is arranged below the exhaust through holes, and the heater is arranged between the gas buffer device and the centrifugal fan. The centrifugal fan enables the hot air to flow through each sample test-piece pipe under the driving of a motor, so that the whole tested cable can be heated uniformly, and the temperature distribution uniformity in the sample test-piece pipe can reach minus or plus 0.1 DEG C%, and accordingly, the accuracy of a cable aging test result is improved.
Description
Technical field
The utility model relates to a kind of hot air aging case, particularly a kind of cable hot air aging case.
Background technology
Traditional cable with hot air aging test box in the time carrying out cable burn-in test, that test sample is suspended on to casing middle part, and its insulation does not contact with other article, is provided with well heater in casing, and by carrying out aging in casing about the temperature and time of cable product standard regulation.When such cable ageing oven structure is carried out multi-cable burn-in test at the same time, in casing, diverse location temperature and air velocity have very big-difference, can not well control every cable homogeneous heating all in casing, thereby cause cable ageing test result inaccurate.
Summary of the invention
Goal of the invention: for above-mentioned prior art, propose a kind of cable hot air aging case, can carry out multi-cable senile experiment at the same time time, control every cable homogeneous heating.
Technical scheme: a kind of cable hot air aging case, be provided with air admission hole in ageing oven bottom, be provided with exhausr port at ageing oven top; In ageing oven, be provided with inner bag, described inner bag is provided with heating chamber and some sample test specimen pipes; Described heating chamber top is provided with some exhaust holes, described heating chamber bottom is provided with air inlet through hole, between the air inlet through hole of the air admission hole of described casing and heating chamber, be connected by pipeline and be connected with gas meter, described sample test specimen pipe is arranged between the exhaust hole of described heating chamber and the exhausr port of casing; Described heating chamber inside is provided with well heater and centrifugal blower, and described centrifugal blower is arranged on described exhaust hole below, and the air outlet of centrifugal blower is just to described exhaust hole, and described well heater is arranged on described air inlet through hole top.
As improvement of the present invention, between described well heater and air inlet through hole, be also provided with gas buffer, described gas buffer is the multilayer platy structure being made of porous materials
As preferred version of the present invention, between described wall of inner container and the cabinet shell of ageing oven, be provided with heat-barrier material, described heat-barrier material is glass wool.
As a further improvement on the present invention, between described inner bag lateral wall and described heat-barrier material, be provided with electrical heating wire.
As preferred version of the present invention, described well heater is nickel chromium triangle tinsel well heater.
Beneficial effect: (1) arranges heating chamber and the sample test specimen pipe that is connected heating chamber in ageing oven inner bag, is provided with well heater in heating chamber, is provided with electrical heating wire outward at heating chamber; By working in advance of outside electrical heating wire, make Air Temperature Difference in heating chamber and sample test specimen pipe remain on ± 3 ℃, then by the well heater work of temperature controller control heating chamber inside, can control the temperature difference in ± 1 ℃; (2), when burn-in test, sample test specimen is suspended in sample test specimen pipe 4, in every test specimen pipe 4, be provided with a velamen and survey cable sample, by centrifugal blower by the air of homogeneous heating with 0.25m
3the flow velocity of/h, through every sample test specimen pipe, is guaranteed reach ± 0.1 ℃ of % of uniformity of temperature profile degree in sample test specimen pipe, thereby makes the entirety of tested cable can thermally equivalent, the accuracy that improves cable aging test result.
Accompanying drawing explanation
Fig. 1 is ageing oven structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done further and explained.
As shown in Figure 1, a kind of cable hot air aging case, is provided with air admission hole 1 in ageing oven bottom, is provided with exhausr port 2 at ageing oven top, is provided with inner bag in ageing oven, and this inner bag inside is provided with 3 and 5 sample test specimen pipes 4 of heating chamber.The top of heating chamber 3 is provided with 5 exhaust holes 5, and the bottom of heating chamber 3 is provided with air inlet through hole 6.Between the air admission hole 1 of casing and the air inlet through hole 6 of heating chamber, be connected by pipeline and be connected with gas meter 7, can well control the flow of hot blast through sample test specimen by this flowmeter.Sample test specimen pipe 4 is arranged between the exhaust hole 5 of heating chamber and the exhausr port 2 of casing, and the diameter of test specimen pipe and length can be according to tested object settings, is the steel test specimen pipe of 100 millimeters of diameters in the present embodiment, and length is 300 millimeters.Heating chamber 3 inside are provided with gas buffer 8, well heater 9, centrifugal blower 10; This gas buffer 8 is the multilayer platy structure being made of porous materials, and is arranged on the top of the air inlet through hole 6 of heating chamber; Centrifugal blower 10 is arranged on exhaust hole 5 belows, and the air outlet of centrifugal blower 10 is just to described exhaust hole 5; Well heater 9 for nickel chromium triangle tinsel well heater and be arranged on gas buffering apparatus 8 and centrifugal blower 10 between; This centrifugal blower 10 is driven by the motor 11 that is arranged on heating chamber 3 outsides.
Between wall of inner container and the cabinet shell of ageing oven, be provided with heat-barrier material 12, this heat-barrier material adopts glass wool.Between sidewall and heat-barrier material, be also provided with outside the tank electrical heating wire 13.In ageing oven, be provided with temperature controller, controlling the temperature range of heating chamber is RT+20 ℃-200 ℃, temperature deviation is controlled at ± and 1 ℃.On this aging casing, be also provided with switch 14 and temperature, time LCDs.
In the time adopting this ageing oven to carry out the experiment of cable burn-in test, first sample test specimen is suspended in sample test specimen pipe 4, a velamen is set in every test specimen pipe 4 and surveys cable sample; Then under the control of temperature controller, the electrical heating wire 13 between inner bag lateral wall and heat-barrier material is started working, and makes heating chamber 3 and sample test specimen pipe 4 external temperatures first rise and remain on setting value; Then under the control of temperature controller, the well heater 9 in heating chamber 3 is started working, and makes the interior air themperature of heating chamber 3 remain on setting value; Open again the valve of flowmeter 7, and drive centrifugal blower 10 by motor 11, guarantee that hot-air is with 0.25m
3the flow velocity of/h is through every sample test specimen pipe 4.Centrifugal blower 10 can make hot blast pass through each sample test specimen pipe 4, makes the entirety of tested cable can thermally equivalent, thereby guarantees reach ± 0.1 ℃ of % of uniformity of temperature profile degree in sample test specimen pipe, thus the accuracy that has improved cable aging test result.In the present embodiment, the length of heating chamber 3 is made as 30cm, 30cm, 20cm successively; The height of heating chamber is arranged on 20cm the cold air entering from air inlet through hole 6 can be heated evenly in the time entering each sample test specimen pipe.Above the air inlet through hole 6 of heating chamber, gas buffer 8 being set can make extraneous air in the time that ageing oven air intake opening 1 enters heating chamber 3, gas velocity slows down, thereby further guarantee after cold air flow energy is by well heater 9 homogeneous heatings to remake on the test sample being used in sample test specimen pipe, avoid the inhomogeneous air-flow of cold and hot degree to act directly on test sample, thereby further improved the precision of experiment.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a cable hot air aging case, is provided with air admission hole (1) in ageing oven bottom, is provided with exhausr port (2) at ageing oven top; It is characterized in that, in ageing oven, be provided with inner bag, in described inner bag, be provided with heating chamber (3) and some sample test specimen pipes (4); Described heating chamber (3) top is provided with some exhaust holes (5), heating chamber (3) bottom is provided with air inlet through hole (6), between the air admission hole (1) of described casing and the air inlet through hole (6) of heating chamber, be connected by pipeline and be connected with gas meter (7), described sample test specimen pipe (4) is arranged between the exhaust hole (5) of described heating chamber and the exhausr port (2) of casing; Described heating chamber (3) inside is provided with well heater (9) and centrifugal blower (10), described centrifugal blower (10) is arranged on described exhaust hole (5) below, the air outlet of centrifugal blower (10) is just to described exhaust hole (5), and described well heater (9) is arranged on described air inlet through hole (6) top.
2. a kind of cable hot air aging case according to claim 1, it is characterized in that, between described well heater (9) and air inlet through hole (6), be also provided with gas buffer (8), the multilayer platy structure of described gas buffer (8) for being made of porous materials.
3. a kind of cable hot air aging case according to claim 1, is characterized in that, is provided with heat-barrier material (12) between described wall of inner container and the cabinet shell of ageing oven, and described heat-barrier material is glass wool.
4. a kind of cable hot air aging case according to claim 3, is characterized in that, is provided with electrical heating wire (13) between described inner bag lateral wall and described heat-barrier material.
5. a kind of cable hot air aging case according to claim 1, is characterized in that, described well heater (9) is nickel chromium triangle tinsel well heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892616.5U CN203688695U (en) | 2013-12-31 | 2013-12-31 | Hot air ageing oven used for cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892616.5U CN203688695U (en) | 2013-12-31 | 2013-12-31 | Hot air ageing oven used for cable |
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| Publication Number | Publication Date |
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| CN203688695U true CN203688695U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320892616.5U Expired - Fee Related CN203688695U (en) | 2013-12-31 | 2013-12-31 | Hot air ageing oven used for cable |
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| CN (1) | CN203688695U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089873A (en) * | 2014-07-22 | 2014-10-08 | 常熟市环境试验设备有限公司 | Heat aging test box |
| CN104111266A (en) * | 2014-07-18 | 2014-10-22 | 常熟市环境试验设备有限公司 | High-precision natural ventilation heat aging test chamber |
| CN106124555A (en) * | 2016-08-15 | 2016-11-16 | 常州百富电子有限公司 | Electric wire heat resistance proof box |
| CN106124554A (en) * | 2016-08-15 | 2016-11-16 | 常州百富电子有限公司 | Heat insulation type electric wire aging resistance proof box |
| CN106909190A (en) * | 2017-04-14 | 2017-06-30 | 苏州鼎鑫冷热缩材料有限公司 | For the aging chamber of waterproof shrinkage outdoor terminal |
| CN107192918A (en) * | 2017-05-29 | 2017-09-22 | 西南交通大学 | Vehicle-mounted cable termination leakage current testing System and method at a temperature of particular surroundings |
| CN107247066A (en) * | 2017-07-26 | 2017-10-13 | 核工业理化工程研究院 | Test the device of elastomeric material anti-cracking performance |
| CN107422191A (en) * | 2017-05-29 | 2017-12-01 | 西南交通大学 | A kind of operating condition is got off download cable terminal dielectric spectroscopy experimental system and method |
| CN113671280A (en) * | 2020-05-15 | 2021-11-19 | 洪义明 | High-voltage collapse testing equipment |
-
2013
- 2013-12-31 CN CN201320892616.5U patent/CN203688695U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104111266A (en) * | 2014-07-18 | 2014-10-22 | 常熟市环境试验设备有限公司 | High-precision natural ventilation heat aging test chamber |
| CN104111266B (en) * | 2014-07-18 | 2017-05-03 | 常熟市环境试验设备有限公司 | High-precision natural ventilation heat aging test chamber |
| CN104089873A (en) * | 2014-07-22 | 2014-10-08 | 常熟市环境试验设备有限公司 | Heat aging test box |
| CN104089873B (en) * | 2014-07-22 | 2016-09-14 | 常熟市环境试验设备有限公司 | A kind of heat aging test chamber |
| CN106124555A (en) * | 2016-08-15 | 2016-11-16 | 常州百富电子有限公司 | Electric wire heat resistance proof box |
| CN106124554A (en) * | 2016-08-15 | 2016-11-16 | 常州百富电子有限公司 | Heat insulation type electric wire aging resistance proof box |
| CN106909190A (en) * | 2017-04-14 | 2017-06-30 | 苏州鼎鑫冷热缩材料有限公司 | For the aging chamber of waterproof shrinkage outdoor terminal |
| CN107192918A (en) * | 2017-05-29 | 2017-09-22 | 西南交通大学 | Vehicle-mounted cable termination leakage current testing System and method at a temperature of particular surroundings |
| CN107422191A (en) * | 2017-05-29 | 2017-12-01 | 西南交通大学 | A kind of operating condition is got off download cable terminal dielectric spectroscopy experimental system and method |
| CN107192918B (en) * | 2017-05-29 | 2019-07-12 | 西南交通大学 | Leakage current testing System and method for of vehicle-mounted cable termination at a temperature of particular surroundings |
| CN107422191B (en) * | 2017-05-29 | 2020-06-02 | 西南交通大学 | Frequency domain dielectric spectrum experiment system and method for vehicle-mounted cable terminal under operation condition |
| CN107247066A (en) * | 2017-07-26 | 2017-10-13 | 核工业理化工程研究院 | Test the device of elastomeric material anti-cracking performance |
| CN107247066B (en) * | 2017-07-26 | 2023-10-17 | 核工业理化工程研究院 | Device for testing cracking resistance of rubber material |
| CN113671280A (en) * | 2020-05-15 | 2021-11-19 | 洪义明 | High-voltage collapse testing equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20191231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |