CN217642632U - Dampproofing radiating cable pit - Google Patents
Dampproofing radiating cable pit Download PDFInfo
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- CN217642632U CN217642632U CN202221387762.8U CN202221387762U CN217642632U CN 217642632 U CN217642632 U CN 217642632U CN 202221387762 U CN202221387762 U CN 202221387762U CN 217642632 U CN217642632 U CN 217642632U
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Abstract
The utility model discloses a damp-proof heat-dissipation cable trench, which comprises a bottom plate, a left side wall, a right side wall and a cover plate, wherein the left side wall and the right side wall are vertically arranged on the left side and the right side of the bottom plate respectively, and the cover plate covers the upper parts of the left side wall and the right side wall; the air inlet hole is arranged at the lower part of one side wall, the air outlet hole is arranged at the upper part of the other side wall, the air inlet hole is lower than the air outlet hole, the air outlet hole is provided with a first axial fan, the air inlet hole is provided with a second axial fan, an air inlet pipe and an air outlet pipe are arranged, one end of the air inlet pipe is communicated with the air inlet hole, the air inlet pipe extends downwards from the air inlet hole and then vertically extends upwards to be communicated with air, one end of the air outlet pipe is communicated with the air outlet hole, the air outlet pipe extends downwards from the air outlet hole and then vertically extends upwards to be communicated with air after passing through a C-shaped bend, a heater is arranged outside the C-shaped bend of the air outlet pipe, and the heater heats the C-shaped bend. Compared with the traditional cable trench, the air circulation channel is additionally arranged, damp and hot air in the cable trench can be effectively discharged, and the purposes of keeping the cable trench dry and reducing the operating environment temperature of the cable are achieved.
Description
Technical Field
The utility model relates to a dampproofing radiating cable pit, especially a dampproofing radiating cable pit that 110kV 220kV transformer substation used belong to and supply distribution technical field.
Background
At present, traditional cable pit of transformer substation generally comprises cable pit bottom plate, side wall and apron, and wherein the cable pit apron adopts reinforced concrete prefabrication to form, along with the increase of service life, the easy condition that ftractures, damaged appear in the apron leads to appearing leaking in the cable pit and the phenomenon of ponding to the age is more of a specified duration, and the ponding condition is just more serious. If accumulated water and moisture in the cable trench are not timely treated, the cable is soaked in water for a long time, water easily enters the middle joint of the cable and is affected with moisture, insulation resistance is reduced, cable faults are caused, and power accidents are easy to happen. Meanwhile, the cable cover plate has poor heat dissipation, the cable generates heat, the service life of the cable can be seriously influenced, and the stable operation of a power system is not facilitated. The measure of present cable pit preventing ponding is taken submersible pump generally and is pumped water and set up the mode of overflow hole drainage in the ditch, and this mode is though most ponding can discharge, but long-term rainwater soaks and leads to humidity great in the cable pit, and current cable pit structure lacks effectual air cycle passageway, can't effectively discharge moisture in the cable pit to cable operation environment temperature is high, and the existence of above-mentioned two factors is maintained for the transformer substation operation and is brought great potential safety hazard.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dampproofing radiating cable pit solves current transformer substation's cable pit air not circulation, and ambient temperature is high in the cable pit, easy ponding, and humidity is big, and ponding, moisture in can not in time handling the cable pit lead to insulation resistance to reduce and cause the problem of cable fault.
The purpose of the utility model is realized through the following technical scheme:
a damp-proof heat-dissipation cable trench comprises a bottom plate, a left side wall, a right side wall and cover plates, wherein the left side wall and the right side wall are vertically arranged on the left side and the right side of the bottom plate respectively, and the cover plates cover the left side wall and the right side wall; the air inlet hole is arranged at the lower part of one side wall, the air outlet hole is arranged at the upper part of the other side wall, the air inlet hole is lower than the air outlet hole, the air outlet hole is provided with a first axial fan, the air inlet hole is provided with a second axial fan, an air inlet pipe and an air outlet pipe are arranged, one end of the air inlet pipe is communicated with the air inlet hole, the air inlet pipe extends downwards from the air inlet hole and then vertically extends upwards to be communicated with air, one end of the air outlet pipe is communicated with the air outlet hole, the air outlet pipe extends downwards from the air outlet hole and then vertically extends upwards to be communicated with air after passing through a C-shaped bend, a heater is arranged outside the C-shaped bend of the air outlet pipe, and the heater heats the C-shaped bend.
The purpose of the utility model can be further realized through the following technical measures:
aforementioned dampproofing radiating cable pit, the bottom plate vertically sets up the catch basin along the cable pit.
Aforementioned dampproofing radiating cable pit, the catch basin cross-section is convex, vertically is equipped with the slope along the cable pit and does benefit to the drainage.
According to the moistureproof and heat-dissipation cable trench, the vertically upward end part of the exhaust pipe is provided with the first conical rain-shielding brim, and the vertically upward end part of the air inlet pipe is provided with the second conical rain-shielding brim.
Compared with the prior art, the beneficial effects of the utility model are that: on the basis of current cable pit structure, through increasing the air cycle passageway, improve the wind channel form of airing exhaust, can realize preventing cable pit ponding, reach the purpose of the interior moisture of quick discharge cable pit, the quick circulation of the interior air of cable pit has been realized, the efficiency of airing exhaust of passageway of airing exhaust has effectively been promoted, it is dry to have guaranteed cable pit internal environment, the very big degree has been avoided the cable to take place insulating reduction, the possibility that leads to the electric power accident, and can take away the heat that the cable operation produced through air cycle, reduce ambient temperature, make the cable operation under good operating condition, the safe and reliable operation of transformer substation has been guaranteed.
Drawings
Fig. 1 is a structure diagram of the cable trench of the present invention;
fig. 2 is a circuit diagram of the operation of the first axial fan, the second axial fan and the heater according to the present invention.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
As shown in fig. 1, the utility model comprises a bottom plate 1, a left side wall 2, a right side wall 3 and a cover plate 4, wherein the left side wall 2 and the right side wall 3 are vertically arranged on the left side and the right side of the bottom plate 1, and the cover plate 4 covers the left side wall 2 and the right side wall 3; an air inlet hole 5 is formed in the lower portion of one side wall, an air outlet hole 6 is formed in the upper portion of the other side wall, the air inlet hole 5 is lower than the air outlet hole 6, a first axial flow fan 7 is arranged on the air outlet hole 6, a second axial flow fan 8 is arranged on the air inlet hole 5, an air inlet pipe 9 and an air outlet pipe 10 are arranged, one end of the air inlet pipe 9 is communicated with the air inlet hole 5, the air inlet pipe extends downwards from the air inlet hole 5 (preventing water in a pipeline from entering a cable trench) and then vertically extends upwards to be communicated with air, one end of the air outlet pipe 10 is communicated with the air outlet hole 6, the air outlet pipe 10 extends downwards from the air outlet hole 6 (preventing water in the pipeline from entering the cable trench), then vertically extends upwards to be communicated with the air after passing through a C-shaped bend 11, a heater 12 is arranged outside the C-shaped bend 11 of the air outlet pipe 10, and the heater 12 heats the C-shaped bend 11. The first axial flow fan 7 is used for exhausting air, the second axial flow fan 8 is used for intaking air, and an anti-corrosion type side wall type square axial flow exhaust fan with the model of WEX-300D4-0.08 is adopted, the rotating speed is 1380rpm, and the air volume is 500m 3 Perh, static pressure of 120Pa, 380V/50Hz power supply, 0.08kW motor power, IP54 motor protection grade, F insulation grade, the whole fan comprises an air inlet stainless steel protective net, an air outlet aluminum alloy gravity type non-return air valve, a 45-degree rain cover and a stainless steel wire mesh. The heater 12 is a HRY3-380/2kW type sheath tubular resistance heater with a rated voltage of 380V and a rated power of 2kW, and is used for heating the C-shaped bend 11, so that the air temperature at the C-shaped bend 11 is raised. One embodiment of the operating circuit of the first axial fan 7, the second axial fan 8, and the heater 12 is shown in fig. 2, and a plurality of sets may be provided according to the sets of the exhaust air and the intake duct.
The utility model discloses with common vertical inline pipeline replacement for be equipped with the exhaust pipe 10 of C type bend 11, hot-air in the cable pit is by first axial fan 7 when arranging to exhaust pipe 10 from 6 departments of exhaust hole, because the pipeline shape of C type bend 11 prevents the air and directly gets rid of, thereby a large amount of hot-air constantly piles up in this department, and along with the continuous heating of heater, the volume of hot-air constantly increases, the internal pressure of hot-air constantly increases, in being extruded to get into vertical exhaust pipe up to hot-air, because hot air density is low, rise fast in vertical exhaust pipe, lead to C type bend 11 department pressure to reduce fast, thereby form the negative pressure space, air in the cable pit is inhaled exhaust pipe under the effect of pressure, thereby air in the exhaust pipe flows with higher speed.
Compared with the traditional cable pit, the utility model discloses increased the air cycle passageway, damp and hot air in can the effective discharge cable pit reaches the purpose that keeps the cable pit dry and reduce cable operation ambient temperature. Compared with the ventilation of a common exhaust fan, the air exhaust speed can be effectively increased and the air circulation efficiency in the cable trench can be improved by improving the exhaust pipeline. In practical engineering application, a group of air exhaust pipelines and air inlet pipelines on two sides of a cable duct are suggested to be arranged at intervals of 6 meters so as to guarantee an air exhaust effect.
Preferably, the utility model discloses a cable pit, bottom plate vertically set up catch basin 13 along the cable pit, and the 13 cross-sections of catch basin are convex, vertically are equipped with the slope along the cable pit, and the drainage slope is established to 0.8%, inserts the drainage system of transformer substation, can effectively discharge ponding in the cable pit.
Preferably, the utility model discloses a cable pit, air-supply line 9, exhaust pipe 10's perpendicular end set up be higher than the ground 100mm prevent transformer substation's ground rainwater from getting into the pipeline in, the perpendicular ascending tip of exhaust pipe 10 sets up first toper brim of a hat 14 that keeps off the rain, and the perpendicular ascending tip of air-supply line 9 sets up second toper brim of a hat 15 that keeps off the rain, prevents that the rainwater from getting into the pipeline.
In addition to the above embodiments, the present invention can also have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (4)
1. A damp-proof heat-dissipation cable trench comprises a bottom plate, a left side wall, a right side wall and cover plates, wherein the left side wall and the right side wall are vertically arranged on the left side and the right side of the bottom plate respectively, and the cover plates cover the left side wall and the right side wall; the air inlet hole is arranged at the lower part of one side wall, the air outlet hole is arranged at the upper part of the other side wall, the air inlet hole is lower than the air outlet hole, the air outlet hole is provided with a first axial flow fan, the air inlet hole is provided with a second axial flow fan, an air inlet pipe and an air outlet pipe are arranged, one end of the air inlet pipe is communicated with the air inlet hole, the air inlet pipe extends downwards from the air inlet hole and then vertically extends upwards to be communicated with air, one end of the air outlet pipe is communicated with the air outlet hole, the air outlet pipe extends downwards from the air outlet hole and then vertically extends upwards to be communicated with air after passing through a C-shaped bend, a heater is arranged outside the C-shaped bend of the air outlet pipe, and the heater heats the C-shaped bend.
2. A moisture-resistant heat-dissipating cable duct according to claim 1, wherein the bottom plate is provided with a catch basin along a longitudinal direction of the cable duct.
3. A moisture-proof and heat-dissipating cable trench as claimed in claim 2, wherein the cross-section of the water collection trench is circular, and the water collection trench is provided with a slope along the longitudinal direction of the cable trench to facilitate drainage.
4. A moisture and heat resistant cable duct according to claim 1, wherein the vertically upward end of the air discharge duct is provided with a first tapered rain visor, and the vertically upward end of the air inlet duct is provided with a second tapered rain visor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221387762.8U CN217642632U (en) | 2022-06-02 | 2022-06-02 | Dampproofing radiating cable pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221387762.8U CN217642632U (en) | 2022-06-02 | 2022-06-02 | Dampproofing radiating cable pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217642632U true CN217642632U (en) | 2022-10-21 |
Family
ID=83622293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221387762.8U Active CN217642632U (en) | 2022-06-02 | 2022-06-02 | Dampproofing radiating cable pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217642632U (en) |
-
2022
- 2022-06-02 CN CN202221387762.8U patent/CN217642632U/en active Active
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