CN211014087U - Simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium - Google Patents
Simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium Download PDFInfo
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- CN211014087U CN211014087U CN201921900093.8U CN201921900093U CN211014087U CN 211014087 U CN211014087 U CN 211014087U CN 201921900093 U CN201921900093 U CN 201921900093U CN 211014087 U CN211014087 U CN 211014087U
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- filling medium
- heat dissipation
- detection device
- heating tube
- thermal resistance
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Abstract
The utility model provides a low thermal resistance cable filling medium radiating effect simulation detection device, include: the temperature detection device comprises a heating tube which can be embedded by a filling medium and a temperature detection mechanism, wherein the detection mechanism comprises at least one probe which is embedded in the filling medium and a feedback device which is electrically connected with the probe. The utility model discloses a combination of heating tube and packing medium has realized the simulation to the cable condition of generating heat under the true condition to position assurance through the probe among the injecing temperature detection mechanism detects the accuracy of data. The utility model discloses can simulate the real condition that the cable generates heat and detect temperature gradient to obtain different packing dielectric material's heat dispersion in phase, provide good data basis for neotype low thermal resistance packing dielectric material's research and development.
Description
Technical Field
The utility model belongs to the technical field of the electric power facility detects, more specifically relates to a low thermal resistance cable filling medium radiating effect simulation detection device.
Background
The direct-buried cable laying mode is an existing proper electric power construction measure, and a key factor for checking whether the laying mode reaches the electric power facility construction standard is to detect the heat dissipation capacity of the laying mode. Because the problem of excessive accumulated heat caused by overhigh load is difficult to avoid in the long-term operation of the cable, in order to ensure the current-carrying capacity of the cable, the filling material coated outside the cable needs to be ensured to have better heat dissipation performance.
With the research and development of the low thermal resistance coefficient backfill material, a proper low thermal resistance filling material is developed to improve the heat dissipation condition environment of the cable, and the method can contribute to effectively reducing the environmental temperature of the cable and improving the current carrying capacity of the cable. How to scientifically, accurately and truly detect the improvement effect of the novel low-thermal-resistance material on the heat dissipation performance of the cable and the improvement effect of the current-carrying capacity, and the heat dissipation condition of the actual cable line is explored to provide basic parameters for improving the performance of the filling material, so that the method is a technical difficulty and necessary content in the application process of the low-thermal-resistance backfill material.
In the prior art, there is a device for simulating and detecting thermal resistance of a heat dissipation module, for example, chinese utility model with publication number CN203658555U discloses a L ED heat dissipation module total thermal resistance measurement system, which simulates and detects a heat dissipation module installed in an air duct by detecting outlet temperature of the air duct, however, this device cannot be applied to temperature detection of a granular embedding medium in a physical state.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art unable low thermal resistance filling material heat dispersion simulation detection device to being used for landfill cable run, the technical problem of the effect of the low thermal resistance cable filling medium of more unable objective evaluation institute research and development when the increase-volume of cable current-carrying provides a low thermal resistance cable filling medium heat dispersion simulation detection device.
In order to achieve the above objects and other related objects, the utility model provides a low thermal resistance cable filling medium radiating effect simulation detection device, include: the temperature detection device comprises a heating tube which can be embedded by a filling medium and a temperature detection mechanism, wherein the detection mechanism comprises at least one probe which is embedded in the filling medium and a feedback device which is electrically connected with the probe.
Optionally, the probes are distributed along the radial direction of the heating tube and located between the wall surface of the heating tube and the outer surface of the filling medium.
Optionally, the feedback device comprises a temperature display.
Optionally, the heat-generating tube is an electric heat-generating tube.
Optionally, the outer surface of the heat generating tube is coated with a protective layer.
Optionally, the protective layer is a corundum layer.
Optionally, the length of the heating tube is greater than the length of the protective layer.
Optionally, the temperature detection mechanism further comprises a fixing frame for fixing the probe.
Optionally, the probe detection ends on the fixing frame are arranged from low to high.
Optionally, the height difference between the detection ends of the adjacent probes is 1-3 cm.
As described above, the present invention has the following advantages:
the utility model discloses a combination of heating tube and packing medium has realized the simulation to the cable condition of generating heat under the true condition to position assurance through the probe among the injecing temperature detection mechanism detects the accuracy of data. The utility model discloses can simulate the real condition that the cable generates heat and detect temperature gradient to obtain different packing dielectric material's heat dispersion in phase, provide good data basis for neotype low thermal resistance packing dielectric material's research and development.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 3 of the present invention.
Description of reference numerals
10-heating tube
101-protective layer
20-filling medium
30-temperature detection mechanism
301-Probe
302-feedback arrangement
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
The utility model discloses well packing medium cladding heating tube is in the real environment for simulation cable operation, and the condition of packing medium landfill cladding heating cable in the gully, the cladding of here show the packing medium best with heating tube direct contact, because such thermal resistance is less, be favorable to thermal conduction, provide better environment for follow-up detection, especially the temperature gradient of inside heat source and outside cold source is great, and data measurement is more accurate.
The utility model discloses in order to guarantee among the detection influence factor's unicity, the interference of unnecessary variable should be avoided as far as possible, so, inject the motion position of probe between nearly heating tube face and the surface of the packing medium that is close to external environment to, the direction of its motion is unanimous, is the radial direction of motion that is with the heating tube.
The utility model provides a feedback device mainly feeds back the size rather than the temperature that electric connection's probe detected.
The utility model discloses a theory of operation does: the method comprises the steps of simulating the actual operation condition of a cable, filling a heating pipe serving as a heating source with a low-thermal-resistance material around the heating pipe, detecting the temperature change trend of the surface of the heating source and a low-thermal-resistance filling medium along with time by using a probe after the heating pipe is heated to a constant temperature, and evaluating the heat conduction condition of the low-thermal-resistance filling medium; and after heating to a certain temperature, performing power-off treatment, making an attenuation curve, and evaluating the heat dissipation condition of the low-thermal-resistance filling medium.
The embodiment of the utility model provides an adopt the combination of heating tube and packing medium, realized the simulation to the cable condition of generating heat under the true condition to position assurance through the probe among the injecing temperature detection mechanism detects the accuracy of data. The embodiment of the utility model provides a can simulate the true condition that the cable generates heat to detect temperature gradient, with the heat dispersion that obtains different packing medium materials in phase, provide good data basis for neotype low thermal resistance filling material's research and development.
In some embodiments, the outer surface of the heat generating tube is coated with a thermally conductive protective layer. The heat conduction protective layer does not influence the heat transfer from the heating tube to the filling medium on the one hand, and on the other hand effectively protects the heating tube from being damaged.
In some embodiments, the length of the heat generating tube exceeds the length of the thermally conductive protective layer. The structure can obtain more data, and lays a foundation for subsequently improving the heat dissipation performance of the low-thermal-resistance filling material.
In some embodiments, the heat-generating tube is an electric heat-generating tube.
In some embodiments, the thermally conductive protective layer is a corundum layer.
In some embodiments, the number of probes is multiple.
Multiple probes can simultaneously perform multiple point location measurements.
In some embodiments, the temperature detection mechanism further includes a fixing frame, the plurality of probes are fixedly connected to the fixing frame, and the detection ends of the plurality of probes are sequentially distributed from low to high. The position of probe is fixed when the mount makes things convenient for measurement at every turn to avoid other because the inaccurate error influence that causes of location.
In some embodiments, the height difference between the detection ends of adjacent probes is 2 cm.
In some embodiments, adjacent probes are spaced apart by a distance of no less than 5 cm.
In some embodiments, the feedback device includes a temperature display, which facilitates viewing of the detected temperature condition.
Example 1
As shown in fig. 1, the present embodiment provides a simulation detecting device for heat dissipation effect of a cable filling medium with low thermal resistance, which includes a heating tube 10, a filling medium 20 covering the heating tube 10, and a temperature detecting mechanism 30; the temperature detection mechanism 30 comprises a probe 301 and a feedback device 302 electrically connected with the probe 301; the moving area of the probe 301 in the radial direction of the heat generating tube 10 within the filling medium 20 is between the wall surface close to the heat generating tube 10 and the outer surface close to the filling medium 20. The feedback device 302 includes a temperature display to facilitate viewing of the detected temperature conditions. The heat generating tube 10 may be an electric heat generating tube.
The working principle of the embodiment is as follows: by simulating the actual operation condition of the cable, an electric heating tube 10 is used as a heating source, the periphery of the electric heating tube is filled with a low-thermal-resistance filling medium 20, after the electric heating tube is heated to a constant temperature, the temperature change trend of the surface of the heating source and the temperature of the low-thermal-resistance filling medium along with time is detected by a thermocouple probe 301, and the heat conduction condition of the low-thermal-resistance filling medium is evaluated; and after heating to a certain temperature, performing power-off treatment, making an attenuation curve, and evaluating the heat dissipation condition of the low-thermal-resistance filling medium.
Example 2
As shown in fig. 2, the present embodiment is substantially the same as embodiment 1, except that the outer surface of the electric heating tube 10 is covered with a heat conductive protective layer 101, and the length of the electric heating tube 10 exceeds the length of the heat conductive protective layer 101. The heat-conducting protective layer 101 is a corundum layer.
The temperature region to be detected in this embodiment includes the surface of the electric heating tube 10, the surface of the corundum layer 101 and the inside of the filling medium 20.
Example 3
As shown in fig. 3, the technical solution of the present embodiment is substantially the same as that of embodiment 1, except that the number of probes 301 is multiple, specifically, may be 1, 2, 3, 4, 5, 8, 10, and the like, and multiple probes 301 may simultaneously perform measurement of multiple point locations. The temperature detection mechanism 30 further includes a fixing frame 303, the plurality of probes 301 are fixedly connected to the fixing frame 303, and the detection ends of the plurality of probes 301 are sequentially distributed from low to high. The fixing frame 303 facilitates fixing the position of the probe 301 during each measurement, so as to avoid error influence caused by inaccurate positioning and other reasons. In this embodiment, the height difference between the detection ends of the adjacent probes 301 is 2cm, and the distance between the adjacent probes 301 is not less than 5cm, including but not limited to 5cm, 6cm, 7cm, 8cm, 9cm, and 10 cm.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A simulation detection device for the heat dissipation effect of a low-thermal-resistance cable filling medium is characterized by comprising: the heating tube (10) can be embedded by a filling medium (20), and the temperature detection mechanism (30) comprises at least one probe (301) embedded in the filling medium (20) and a feedback device (302) electrically connected with the probe (301).
2. The simulation detection device for the heat dissipation effect of the cable filling medium with low thermal resistance as recited in claim 1, wherein: the probes (301) are distributed along the radial direction of the heating tube (10) and are positioned between the wall surface of the heating tube (10) and the outer surface of the filling medium (20).
3. The simulation detection device for the heat dissipation effect of the cable filling medium with low thermal resistance as recited in claim 1, wherein: the feedback device (302) is a device including a temperature display.
4. The simulation detection device for the heat dissipation effect of the cable filling medium with low thermal resistance as recited in claim 1, wherein: the heating tube (10) is an electric heating tube.
5. The simulation detection device for the heat dissipation effect of the cable filling medium with low thermal resistance as recited in claim 1, wherein: the outer surface of the heating tube (10) is coated with a protective layer (101).
6. The simulation detection device for the heat dissipation effect of the cable filling medium with low thermal resistance as recited in claim 5, wherein: the protective layer (101) is a corundum layer.
7. The simulation detection device for the heat dissipation effect of the cable filling medium with low thermal resistance as recited in claim 5, wherein: the length of the heating tube (10) is larger than that of the protective layer (101).
8. The simulation detection device for the heat dissipation effect of the cable filling medium with low thermal resistance as recited in claim 1, wherein: the temperature detection mechanism (30) further comprises a fixing frame (303) for fixing the probe (301).
9. The simulation detection device for the heat dissipation effect of the cable filling medium with low thermal resistance as recited in claim 8, wherein: the detection end of the probe (301) on the fixing frame (303) is arranged from low to high.
10. The simulation detection device for the heat dissipation effect of the cable filling medium with low thermal resistance as recited in claim 9, wherein: the height difference of the detection ends of the adjacent probes (301) is 1-3 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921900093.8U CN211014087U (en) | 2019-11-05 | 2019-11-05 | Simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921900093.8U CN211014087U (en) | 2019-11-05 | 2019-11-05 | Simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium |
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| CN211014087U true CN211014087U (en) | 2020-07-14 |
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| CN201921900093.8U Active CN211014087U (en) | 2019-11-05 | 2019-11-05 | Simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305018A (en) * | 2020-09-29 | 2021-02-02 | 广东电网有限责任公司 | True simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium |
| CN113109384A (en) * | 2021-03-04 | 2021-07-13 | 国网浙江省电力有限公司嘉兴供电公司 | Power transmission and transformation hybrid line dynamic capacity increase evaluation method and system |
-
2019
- 2019-11-05 CN CN201921900093.8U patent/CN211014087U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305018A (en) * | 2020-09-29 | 2021-02-02 | 广东电网有限责任公司 | True simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium |
| CN113109384A (en) * | 2021-03-04 | 2021-07-13 | 国网浙江省电力有限公司嘉兴供电公司 | Power transmission and transformation hybrid line dynamic capacity increase evaluation method and system |
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