CN112305018A - True simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium - Google Patents
True simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium Download PDFInfo
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- CN112305018A CN112305018A CN202011051994.1A CN202011051994A CN112305018A CN 112305018 A CN112305018 A CN 112305018A CN 202011051994 A CN202011051994 A CN 202011051994A CN 112305018 A CN112305018 A CN 112305018A
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- filling medium
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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Abstract
The invention discloses a real simulation detection device for the heat dissipation effect of a low-thermal-resistance cable filling medium. The test box comprises a test box body, an upper opening of the test box body is formed, the middle parts of the left side wall and the right side wall of the test box body are respectively provided with a front fixing plate sliding frame and a rear fixing plate sliding frame, the front fixing plate sliding frame of the left side wall and the right side wall of the test box body is erected with a front fixing plate, the rear fixing plate sliding frame of the left side wall and the right side wall of the test box body is erected with a rear fixing plate, the middle part of a space formed by the front fixing plate and the rear fixing plate in the test box body is provided with a heating tube which can be embedded by a filling medium, the test box body at least comprises a probe embedded in the filling medium and a feedback device electrically connected with the probe, and the space formed by the front fixing plate and. According to the invention, the soil is coated around the cable filling medium, so that the process that the actual use of the cable filling medium is in the soil is really reduced, and the action effect of the low-thermal-resistance cable filling medium in the current-carrying capacity-increasing process of the cable can be objectively evaluated.
Description
Technical Field
The invention belongs to the field of cable fillers, and particularly relates to a real simulation detection device for the heat dissipation effect of a low-thermal-resistance cable filling medium.
Background
The current-carrying capacity of the cable is limited due to the high-heat-resistance environment existing in the operation process of the cable, the temperature around the cable is too high due to the accumulation of multiple cables, timely effective heat dissipation and heat conduction treatment cannot be achieved, and fire or other serious accidents can be caused greatly. The low-thermal-resistance filling protection material is filled in the underground cable laying engineering, so that the purposes of preventing the cable from being damaged by external force, improving the external heat dissipation environment of the cable, improving the safe operation performance of a cable line and stabilizing the current-carrying capacity of the cable can be achieved.
At present, the backfill material with the low thermal resistance coefficient has obtained some research results, improves the heat dissipation environment of the cable, and makes a contribution to effectively reducing the temperature of the cable. Although the backfill material has been improved in the aspect of reducing the thermal resistance coefficient through the optimization of components, proportion and the like, how to scientifically, accurately and truly detect the improvement of the novel low thermal resistance material on the heat dissipation performance of the cable and the improvement effect of the current carrying capacity so as to provide a research foundation for researching the heat dissipation condition of a cable line in the field practice is necessary content in the application process of the low thermal resistance backfill material. The simulation of the process is helpful for faithfully and objectively evaluating the action effect of the developed low-thermal-resistance cable filling medium during the current-carrying capacity increase of the cable, and the feedback data of the low-thermal-resistance cable filling medium is effective until the material is further developed and improved.
The inventor's prior patent application (patent number: CN201921900093, invention name: a low thermal resistance cable filling medium heat dissipation effect simulation detection device), through the inventor's actual test, it is found that although it can play a certain simulation role, it is buried in soil in the practical application of cable filling, and this set of simulation detection device, it is put filling medium into the container, and the container is totally different with the soil in the practical application, thus influenced the simulation detection device to filling medium performance test.
Disclosure of Invention
The invention aims to provide a real simulation detection device for the heat dissipation effect of a low thermal resistance cable filling medium, which can truly simulate the actual application process of the filling medium and can objectively evaluate the action effect of the low thermal resistance cable filling medium during the current-carrying capacity increase of a cable.
The invention is implemented by the following technical scheme:
the invention discloses a real simulation detection device for the heat dissipation effect of a low-thermal-resistance cable filling medium, which comprises a test box, wherein the upper part of the test box is provided with an opening, the middle parts of the left side wall and the right side wall of the test box are respectively provided with a front fixing plate sliding frame and a rear fixing plate sliding frame, the middle parts of the front fixing plate sliding frames of the left side wall and the right side wall are provided with a front fixing plate, the middle parts of the rear fixing plate sliding frames of the left side wall and the right side wall are provided with a rear fixing plate, the middle parts of spaces formed by the front fixing plate and the rear fixing plate in the test box are provided with heating tubes which can be embedded by the filling medium, the device also at least comprises a probe embedded in the filling medium and a feedback device electrically connected with the probe, and the space formed by the front fixing.
Preferably, the probes are distributed along the radial direction of the heating tube and are positioned between the wall surface of the heating tube and the outer surface of the filling medium.
Preferably, the feedback device is a temperature display.
Preferably, the heating tube is an electric heating tube. The surface of the electric heating tube can be provided with a heat-conducting protective layer, such as a corundum layer.
The probe can be a plurality of probes, and the plurality of probes can simultaneously carry out measurement on a plurality of sites.
The use method of the real simulation detection device for the heat dissipation effect of the low-thermal-resistance cable filling medium comprises the following steps:
the method comprises the steps of filling soil in a test box, filling cable filling media in spaces of a front fixing plate, a rear fixing plate and lower soil when the soil is filled to a proper height, such as the lower edges of the front fixing plate and the rear fixing plate, stopping filling the cable filling media when the soil reaches the proper height, such as the upper edges of the front fixing plate and the rear fixing plate, filling soil above the cable filling media to enable the soil to wrap the cable filling media, installing probes in the soil and/or the cable filling media in the process of filling the soil and the cable filling media, and then drawing out the front fixing plate and the rear fixing plate (the front fixing plate and the rear fixing plate are erected in a front fixing plate sliding frame and a rear fixing plate sliding frame and can be drawn out), so that the filling media are completely contacted with the soil, and the actual use condition is simulated. The heating tube is used as a heating source, after the heating tube is heated to a constant temperature, the probe detects the trend of the temperature of the filling medium and/or soil at different distances from the heating source along with the change of time (the feedback device can see the reading), the heat conduction condition of the cable filling medium is evaluated, after the heating tube is heated to a certain temperature, the heating source is disconnected, an attenuation curve is made, and the heat dissipation condition of the cable filling medium is evaluated.
According to the invention, the soil is coated around the cable filling medium, so that the process that the actual use of the cable filling medium is in the soil is really reduced, and the action effect of the low-thermal-resistance cable filling medium in the current-carrying capacity-increasing process of the cable can be objectively evaluated.
Description of the drawings:
FIG. 1 is a schematic structural diagram of a real simulation detecting device for the heat dissipation effect of the low thermal resistance cable filling medium in embodiment 1;
wherein 1, a test chamber; 2. a front retention plate sliding frame; 3. a rear position-retaining plate sliding frame; 4. a front retention plate; 5. a rear retention plate; 6. a heat generating tube; 7. a probe; 8. a feedback device; 9. a power source.
The specific implementation mode is as follows:
the following examples are further illustrative of the present invention and are not intended to be limiting thereof.
Example 1:
as shown in fig. 1, the device for truly simulating and detecting the heat dissipation effect of the low thermal resistance cable filling medium of the embodiment comprises a test chamber 1, an upper opening of the test chamber, the middle parts of the left side wall and the right side wall of the test box are respectively provided with a front retaining plate sliding frame 2 and a rear retaining plate sliding frame 3 which are parallel and corresponding, the front retaining plate sliding frame and the rear retaining plate sliding frame are positioned on the same horizontal plane, the front retaining plate 4 is erected in the front retaining plate sliding frame of the left side wall and the right side wall, a rear retaining plate 5 is erected in the rear retaining plate sliding frame of the left side wall and the right side wall, the front retaining plate and the rear retaining plate are in parallel correspondence, the middle part of the space formed by the front and the rear position fixing plates in the test box is provided with a heating tube 6 which can be embedded by a filling medium, the test box also comprises 3 probes 7 which are embedded in the filling medium and a feedback device 8 which is electrically connected with the probes, and the space formed by the front and the rear position fixing plates is positioned in the middle part of the test box. The probes 7 are distributed along the radial direction of the heating tube and are positioned between the surface of the heating tube and the outer surface of the filling medium. The feedback device is a temperature display. The heating tube is an electric heating tube, and the electric heating tube is connected with a power supply 9. The surface of the electric heating tube can be provided with a heat-conducting protective layer, such as a corundum layer.
Claims (7)
1. The utility model provides a low thermal resistance cable fills true simulation detection device of medium radiating effect, its characterized in that, including the proof box, the upper portion opening of proof box the left and right lateral wall middle part of proof box be equipped with preceding, back retention board sliding frame respectively, the preceding retention board sliding frame of left and right lateral wall erects preceding retention board, erects the back retention board in the back retention board sliding frame of left and right lateral wall, the middle part in the space that the preceding, back retention board formed in the proof box is equipped with the heating tube that can be embedded by the filling medium, still include at least one be used for burying underground the probe in the filling medium and with the feedback device that the probe electricity is connected, the space that preceding, back retention board formed is located the middle part of proof box.
2. The apparatus according to claim 1, wherein the probes are distributed along the radial direction of the heating tube and between the surface of the heating tube and the outer surface of the filling medium.
3. The apparatus for truly simulating and detecting the heat dissipation effect of a cable filling medium with low thermal resistance as claimed in claim 1, wherein said feedback device is a temperature display.
4. The device for truly simulating and detecting the heat dissipation effect of the cable filling medium with low thermal resistance as claimed in claim 1, wherein the heating tube is an electric heating tube.
5. The device for truly simulating and detecting the heat dissipation effect of the cable filling medium with low thermal resistance as claimed in claim 4, wherein the surface of the electric heating tube is provided with a heat-conducting protective layer.
6. The device for truly simulating and detecting the heat dissipation effect of the cable filling medium with low thermal resistance as claimed in claim 5, wherein the heat-conducting protective layer is a corundum layer.
7. The device for truly simulating and detecting the heat dissipation effect of the cable filling medium with low thermal resistance as claimed in claim 1, wherein the number of the probes is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011051994.1A CN112305018A (en) | 2020-09-29 | 2020-09-29 | True simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011051994.1A CN112305018A (en) | 2020-09-29 | 2020-09-29 | True simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium |
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| CN112305018A true CN112305018A (en) | 2021-02-02 |
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| CN202011051994.1A Pending CN112305018A (en) | 2020-09-29 | 2020-09-29 | True simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113032972A (en) * | 2021-03-04 | 2021-06-25 | 国网浙江省电力有限公司嘉兴供电公司 | Power transmission and transformation line dynamic current-carrying capacity prediction method based on microenvironment monitoring |
| 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 |
| CN113109640A (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 line intelligent dynamic capacity increasing system and method based on pre-simulation |
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| CN109187653A (en) * | 2018-08-13 | 2019-01-11 | 西南交通大学 | The Horizontal Layer Soil dynamic electric resistor characteristic test method of meter and different temperatures |
| CN109406376A (en) * | 2018-11-08 | 2019-03-01 | 国网浙江象山县供电有限公司 | The adaptive cable ageing test apparatus of temperature and humidity |
| CN211014087U (en) * | 2019-11-05 | 2020-07-14 | 广东电网有限责任公司 | Simulation detection device for heat dissipation effect of low-thermal-resistance cable filling medium |
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2020
- 2020-09-29 CN CN202011051994.1A patent/CN112305018A/en active Pending
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| CN205724789U (en) * | 2016-05-04 | 2016-11-23 | 广西电网有限责任公司南宁供电局 | A kind of Novel low resistance filled media cable heat radiation fire wall |
| CN206974826U (en) * | 2017-07-31 | 2018-02-06 | 石家庄铁道大学 | Test the experimental rig of Creep of Geosynthetics performance |
| CN108761208A (en) * | 2018-08-13 | 2018-11-06 | 西南交通大学 | A kind of test method of vertical demixing soil dynamic resistance |
| CN109187653A (en) * | 2018-08-13 | 2019-01-11 | 西南交通大学 | The Horizontal Layer Soil dynamic electric resistor characteristic test method of meter and different temperatures |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113032972A (en) * | 2021-03-04 | 2021-06-25 | 国网浙江省电力有限公司嘉兴供电公司 | Power transmission and transformation line dynamic current-carrying capacity prediction method based on microenvironment monitoring |
| 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 |
| CN113109640A (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 line intelligent dynamic capacity increasing system and method based on pre-simulation |
| CN113109384B (en) * | 2021-03-04 | 2022-10-11 | 国网浙江省电力有限公司嘉兴供电公司 | Dynamic capacity increase evaluation method for power transmission and transformation hybrid line |
| CN113032972B (en) * | 2021-03-04 | 2023-11-10 | 国网浙江省电力有限公司嘉兴供电公司 | Power transmission and transformation line dynamic current-carrying capacity prediction method based on microenvironment monitoring |
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