CN216251809U - Wet curtain air cooling system of electrical equipment cabinet - Google Patents
Wet curtain air cooling system of electrical equipment cabinet Download PDFInfo
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- CN216251809U CN216251809U CN202121484451.9U CN202121484451U CN216251809U CN 216251809 U CN216251809 U CN 216251809U CN 202121484451 U CN202121484451 U CN 202121484451U CN 216251809 U CN216251809 U CN 216251809U
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Abstract
The utility model relates to a wet curtain air cooling system for an electrical equipment cabinet, which comprises an electrical cabinet body and an air cooler embedded in the door of the electrical cabinet body, and is characterized in that: the air cooler is provided with an air-cooled external circulation system communicated with the secondary cable trench and an air-cooled internal circulation system adjacent to the air-cooled external circulation system; the air-cooled internal circulation system is characterized in that an internal circulation air inlet of the air-cooled internal circulation system is positioned below a heating body in the electric cabinet, an internal circulation air outlet of the air-cooled internal circulation system is positioned above the heating body in the electric cabinet, and the air-cooled internal circulation system is cooled through an air-cooled external circulation system. The control device controls the air speed of the air cooling circulating system to cool the equipment, and the method is simple, strong in universality, high in reliability and low in energy consumption.
Description
Technical Field
The utility model relates to an air cooling system, in particular to a wet curtain air cooling system for an electrical equipment cabinet.
Background
The cooling work of the operating electrical equipment of the intelligent terminal cabinet of the power system transformer substation and the outdoor electrical cabinet of the power distribution network is more and more emphasized, and the reason is that the operating electronic equipment such as the intelligent terminal, the merging unit, the DTU and the TTU have high requirements on the temperature of the operating environment.
The traditional conventional backpack type air cooler can not meet the requirement of equipment cooling, the cooling air of the conventional backpack type air cooler comes from the outdoors, the temperature of the outdoor surface ambient air is close to 80 ℃ in a high-temperature time period in the midsummer season, the heat exchange temperature difference of the backpack type air cooler is 3-5 ℃, the temperature of the air in the cooler can be deduced to be incapable of meeting the basic temperature requirement of operating electronic equipment, at the initial stage, the intelligent terminal cabinet door can only be opened on site to ventilate and dissipate heat, otherwise, the intelligent equipment in the cooler is directly abnormal or crashed, and after the cabinet door is opened to ventilate, the intelligent equipment in the cooler is not abnormal or crashed, so that the intelligent equipment in the cooler can at least guarantee normal operation in an open high-temperature environment which is not directly irradiated by sunlight.
And the back-pack type cabinet air conditioner is changed in the later stage, and once the unique cabinet air conditioner is found to be abnormal or crashed, the requirement of all-weather cooling of the intelligent terminal cabinet of the transformer substation cannot be met. Therefore, some manufacturers have also provided air-conditioning and heat-pipe integrated machines (air-heating integrated machines for short), and recent practical operation experience proves that the heat pipes of the air-conditioning and heat-pipe integrated machines have certain effect on cooling the electrical equipment running in the cabinet when the environment outside the cabinet is low, and effective energy conservation is the fact that the heat pipes are only substances in the pipes have phase change effect and high heat conduction efficiency, and are limited by the technology of radiating heat and transferring external heat of a condensation end to the heat pipes.
Because of the existence of one of them: the cabinet air-conditioning series including the air-conditioning and heat pipe all-in-one machine form an air flow short circuit due to design defects, cooling air cannot effectively flow through the surface of a heating element, the actual cooling effect of electronic equipment such as a combination unit and an intelligent terminal unit in the cabinet does not meet the technical design requirement, and electric energy is wasted; the second step is as follows: the temperature of the air conditioner cabinet in the operation process is a process of up-and-down fluctuation, which directly causes the electronic equipment in the cabinet to operate in sauna.
To sum up, the temperature regulation and control in the intelligent terminal cabinet of the power system transformer substation and the outdoor electric cabinet of the power distribution network are directly related to the safe and stable operation of the power grid.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electrical equipment cabinet wet curtain air cooling system and a cooling method thereof, which have the advantages of strong universality, high reliability and low energy consumption.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a wet curtain air cooling system for an electrical equipment cabinet comprises an electrical cabinet body and an air cooler embedded in a cabinet door of the electrical cabinet body, wherein the air cooler is provided with an air cooling external circulation system communicated with a secondary cable trench and an air cooling internal circulation system adjacent to the air cooling external circulation system; the air-cooled internal circulation system is characterized in that an internal circulation air inlet of the air-cooled internal circulation system is positioned below a heating body in the electric appliance box body, an internal circulation air outlet of the air-cooled internal circulation system is positioned above the heating body in the electric appliance box body, so that air of the internal circulation can be directly blown to the surface of the heating body, and the air-cooled internal circulation system is cooled through an air-cooled external circulation system.
As a further improvement of the above technical solution:
the air-cooled external circulation system comprises a cabinet body inlet and outlet secondary cable cavity arranged below the electric cabinet body, the secondary cable cavity is communicated with a secondary cable trench, a water-cooled wet curtain is arranged at the joint of the secondary cable cavity and the secondary cable trench, a cooling water dripper is arranged above the water-cooled wet curtain, and an air outlet of the secondary cable cavity is communicated with an external circulation air inlet of the air cooler through an air guide device.
And an external circulation air inlet of the air cooling external circulation system is arranged at the upper end of the outer side of the cabinet door of the air cooler, and an external circulation air outlet of the air cooling external circulation system is arranged at the lower end of the outer side of the cabinet door of the air cooler.
The air guiding device comprises an air guiding cover communicated with the cavity of the secondary cable and an air collecting cover arranged at an external circulation air inlet on the air cooler, and the air collecting cover is communicated with the air guiding cover through opening and closing of a cabinet door of the electric cabinet.
The air guide cover has elasticity along the direction of the air inlet and the air outlet of the air guide cover, a sealing ring is arranged at the air outlet of the air guide cover and is obliquely arranged along the opening and closing direction of the door of the electric cabinet, the air inlet of the air collection cover is obliquely pushed to the air outlet of the air guide cover through the opening and closing of the door of the electric cabinet, and the air outlet of the air guide cover enables the air collection cover and the air guide cover to be sealed and communicated under the elastic action of the air outlet of the air guide cover.
An external circulation fan for providing power for the air-cooled external circulation system is arranged in the air guide cover, and an internal circulation fan for providing power for the air-cooled internal circulation system is arranged between the heating body and the air cooler.
A cooling method of a wet curtain air cooling system of an electrical equipment cabinet comprises the following steps:
an air-cooled external circulation system communicated with the secondary cable trench is arranged on the outer side of the air cooler, an air-cooled internal circulation system communicated with the electric box cabinet body is arranged on the inner side of the air cooler, and the air-cooled internal circulation system is cooled through the air-cooled external circulation system;
the air-cooled external circulation system is provided with a water-cooled wet curtain assembly at an air outlet of the secondary cable trench and cools the underground natural cold air in the cable trench;
fans are arranged in the air-cooled external circulation system and the air-cooled internal circulation system, and the fans of the internal circulation system directly blow the internal circulation cooling air to the surface of an internal heating element of the electric appliance cabinet body to cool;
the internal temperature sensor that is equipped with of electrical apparatus cabinet, according to temperature sensor's temperature variation, through coming from the warm in winter and cool in summer air in cable pit underground and the internal gas circulation speed of switch board and the cooling of the heat-generating body in the switch board is realized to the wet curtain subassembly of water-cooling of secondary cable pit gas outlet department.
According to the technical scheme, the wet curtain air cooling system for the electrical equipment cabinet, disclosed by the utility model, is used for cooling heating equipment in the cabinet body by utilizing cold air of the cable trench, detecting the temperature on the equipment by the patch type temperature sensor, and controlling the air speed of the air cooling circulation system by the control device to realize the cooling of the equipment.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the air cooler of the present invention;
FIG. 3 is a schematic view of the wind scooper of the present invention;
FIG. 4 is a schematic view of the structure of the wind-collecting cover of the present invention;
FIG. 5 is a schematic structural view of a cabinet surface temperature sensor according to the present invention;
fig. 6 is a partial side view of the utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
as shown in fig. 1, the wet curtain air cooling system for electrical equipment cabinets of this embodiment includes an electrical cabinet body 4 and an air cooler 2 embedded in a cabinet door 42 of the electrical cabinet body 4, wherein the air cooler 2 is provided with an air-cooled external circulation system communicated with the secondary cable duct 14 and an air-cooled internal circulation system adjacent to the air-cooled external circulation system; an inner circulation air inlet 6 of the air-cooled inner circulation system is positioned below a heating element 41 in the electric cabinet body 4, an inner circulation air outlet 3 of the air-cooled inner circulation system is positioned above the heating element 41 in the electric cabinet body 4, and the air-cooled inner circulation system is cooled through an air-cooled outer circulation system.
An external circulation air inlet 7 and an internal circulation air outlet 3 are arranged below the air cooler 2 on the inner side of the electric cabinet body 4, an external circulation air outlet 1 is arranged above the air cooler 2 on the outer side of the electric cabinet body 4, and an internal circulation air inlet 6 is arranged above the air cooler 2 on the inner side of the electric cabinet body 4.
The forced air cooling external circulation system of this embodiment is including locating cabinet body business turn over secondary cable cavity 12 of 4 below the electric cabinet body, electric cabinet body 4 is located secondary cable cavity 2 directly over, secondary cable cavity 12 and secondary cable ditch 14 intercommunication, and secondary cable cavity 12 is equipped with the wet curtain 15 of water-cooling with secondary cable ditch 14 junction, be equipped with cooling water dropper 13 directly over the wet curtain 15 of water-cooling, the air outlet of secondary cable cavity 12 passes through air ducting and the extrinsic cycle air intake intercommunication of air cooler 2.
The air guiding device is composed of an air collecting cover 9 and an air guiding cover 10, an air inlet of the air guiding cover 10 is communicated with an air outlet of a secondary cable cavity 14, an air outlet of the air collecting cover 9 is fixed at an external circulation air inlet 7 of the air cooler 2, springs are arranged on the periphery of the inner side of the air collecting cover 9 of the embodiment and have elasticity along the opening direction of the springs, and the air outlet of the air guiding cover 10 is communicated with the air inlet of the air collecting cover 9 through opening and closing of a cabinet door of the electric cabinet and under the elastic action of the air collecting cover 9.
As shown in fig. 3 and 4, in order to facilitate the connection between the wind-collecting cover 9 and the wind-guiding cover 10, both the wind-collecting cover 9 and the wind-guiding cover 10 of the present embodiment are disposed obliquely, and the wind inlet 19 of the wind-collecting cover 9 is directly obliquely pressed on the external circulation elastic wind-guiding cover wind outlet 22 of the air cooler external circulation elastic wind-guiding cover 10. And internal circulation fans 8 and 5 for providing power for the air-cooled internal circulation system and an external circulation fan 11 for providing power for the air-cooled external circulation system are arranged between the electric cabinet body 4 and the air cooler 2.
When the electric cabinet body 4 is at high temperature, the cooling water dripper 13 drips water to the water-cooling wet curtain 15 to keep the temperature of the water-cooling wet curtain 15 to be basically the same level with the temperature of tap water, the air cooler 2 is arranged on the back cabinet door of the electric cabinet body 4, air in the secondary cable trench 14 forms external circulating air 24 under the negative pressure suction action of the external circulating fan 11, the external circulating air 24 (in the direction of a solid arrow) flows through the water-cooling wet curtain 15 to realize the temperature reduction of the air in the secondary cable trench 14, the external circulating air 24 flows through an electric cabinet cavity and a cable trench communication port 16 below the electric cabinet body 4 to an inlet and outlet secondary cable cavity 12, the pumped cooling air is sent to an external circulating air collecting hood 9 through the external circulating fan 11 in the air guide hood 10, the cooling air enters the air cooler 2 through an external circulating air inlet 7 of the air cooler 2, the external circulating air 24 exchanges heat with the internal circulating air 23 in the air cooler 2 and then flows through an air outlet 1 of the air cooler 2 to discharge the air cooler 2, in the air supply process of the air cooler internal circulation fan 8 and the air draft process of the air cooler 2, internal circulation air 23 cooled by the air cooler 2 is cooled in the electric cabinet body 4 in a circulating manner, local direct-blowing cooling fans 5 in the electric cabinet body 4 directly blow the cooled internal circulation air 23 to the surfaces of running electronic equipment cabinets in the electric cabinet body 4, the internal circulation air 23 flows through the surfaces of the running electronic equipment in the electric cabinet body 4 and then enters an air cooler internal circulation air inlet 6 of the air cooler 2, and after heat exchange is carried out in the air cooler 2, the internal circulation air outlet 3 of the air cooler 2 is drawn out by the air cooler internal circulation fan 8. The air outlet 18 of the wind-collecting cover 9 is fixed with the external circulation air inlet 7 in a sealing way, when the air cooler 2 and the wind-collecting cover 9 are closed along with the rear cabinet door of the electric cabinet body 4, the air inlet 19 of the wind-collecting cover 9 is directly pushed and pressed on the air outlet 22 of the wind-guiding cover 10 in an inclined way, the embedded spring 21 of the wind-guiding cover 10 keeps elasticity, and the external circulation elastic wind-guiding cover air outlet sealing soft ring 27 on the external circulation elastic wind-guiding cover air outlet 22 is tightly sealed and blocked with the inner side of the external circulation wind-collecting cover 9.
As shown in fig. 2, a structural diagram of the air cooler 2 is schematically shown, one side of each heat dissipation aluminum foil of the air cooler 2 flows with the internal circulation air 23, and the other side of each heat dissipation aluminum foil of the air cooler 2 flows with the external circulation air 24, so that a heat exchange working process is realized, the internal circulation air 23 in the electric cabinet body 4 flows into the air cooler 2 through the air cooler internal circulation air inlet 6 and flows out through the air cooler internal circulation air outlet 3 of the air cooler 2, the external circulation air 24 flows into the air cooler 2 through the air cooler external circulation air inlet 7 of the air cooler 2 and flows out through the air cooler external circulation air outlet 1 of the air cooler 2, and the internal circulation channel and the external circulation channel are adjacent but not communicated.
In the cooling method of the wet curtain air cooling system for the electrical equipment cabinet of the embodiment, the surface temperature change of the electronic equipment to be operated, which is detected by the patch type temperature sensor 25 in the air cooler 2 cabinet, has various working methods, specifically as follows:
(1) when the external environment temperature of the air cooler 2 cabinet is low enough, the shell of the electrical cabinet body 4 and the air cooler 2 naturally radiate heat, the surface temperature of the electronic equipment changes along with the operation detected by the surface mount type temperature sensor 25, the local direct-blowing cooling fans 5 in the electrical cabinet operate in a gear-shifting manner, the local direct-blowing cooling fans 5 in the electrical cabinet at least keep a group in an operating state, the local direct-blowing cooling fans 5 in each group of electrical cabinet operate alternately, the temperature rises along with the temperature in the electrical cabinet body 4, and the local direct-blowing cooling fans 5 in the electrical cabinet operate completely.
(2) Along with the gradual rise of the surface temperature of the electronic equipment which is operated and detected by the surface mount type temperature sensor 25, the air cooler internal circulation fan 8 operates to force the internal circulation air 23 to flow through the air cooler 2, and the external circulation air 24 flowing through the air cooler 2 naturally flows, so that the air in the electric cabinet body 4 is cooled.
(3) Along with the further increase of the surface temperature of the electronic equipment which is detected by the patch type temperature sensor 25 and runs, the air cooler internal circulation fan 8 runs, the internal circulation air 23 is forced to flow through the air cooler 2, the air cooler external circulation fan 11 is started to run, the external circulation air 24 is forced to flow rapidly, and the internal circulation air 23 and the external circulation air 24 complete heat exchange in the air cooler 2.
(4) Along with the further increase of the surface temperature of the electronic equipment operated and detected by the patch type temperature sensor 25, the cooling water drippers 13 in the secondary cable trench 14 begin to drip water to wet the water-cooling wet curtain 15, the cooled external circulation air 24 enters the electric cabinet in-out secondary cable cavity 12 through the cable trench communication port 16, and then is pumped by the air cooler external circulation fan 11 through the electric cabinet cavity and the electric cabinet communication port 17 to push the air cooler external circulation air inlet 7, and the forcibly cooled internal circulation air 23 and the external circulation air 24 complete heat exchange in the air cooler 2.
(5) The surface-mounted temperature sensor 25 is provided with two pieces which are respectively adhered to the highest heating temperature positions of two different operation electronic equipment cabinets in the electric cabinet body 4, the system control takes the display of the high temperature of the operation electronic equipment as the control standard, and when the single-piece surface-mounted temperature sensor 25 is in fault or abnormal, the fault information is uploaded; when the two patch type temperature sensors 25 are all in fault or abnormal, the fault information is uploaded, and the system enters an abnormal operation mode, namely the operation mode of the 4) until the patch type temperature sensors 25 are all recovered to be normal.
(6) Fans of a local direct-blowing cooling fan 5, an air cooler internal circulation fan 8 and an air cooler external circulation fan 11 in the electric cabinet are in a multi-mode, so that the fault information is reduced from being uploaded when any single fan fails or is abnormal, the fault information can be timely processed, and the condition that the cooling protection of electronic equipment running in the electric cabinet body 4 is lost is avoided; in the same way, the air cooler 2 has no electric and transmission mechanical structure, and therefore cooling protection for electronic equipment running in the electric cabinet body 4 is not lost.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (6)
1. The utility model provides an electrical equipment cabinet wet curtain air cooling system, includes air cooler (2) on the electric cabinet body (4) and embedding electric cabinet door (42), its characterized in that: the air cooler (2) is provided with an air-cooled external circulation system communicated with the secondary cable trench (14) and an air-cooled internal circulation system adjacent to the air-cooled external circulation system; the air-cooled internal circulation system is characterized in that an internal circulation air inlet (6) of the air-cooled internal circulation system is located below a heating body (41) in an electric cabinet body (4), an internal circulation air outlet (3) of the air-cooled internal circulation system is located above the heating body (41) in the electric cabinet body (4), so that air of the internal circulation can be directly blown to the surface of the heating body (41), and the air-cooled internal circulation system is cooled through an air-cooled external circulation system.
2. The electrical equipment cabinet wet curtain air cooling system as claimed in claim 1, wherein:
air-cooled extrinsic cycle system is including locating secondary cable cavity (12) of electric cabinet body (4) below, secondary cable cavity (12) and secondary cable ditch (14) intercommunication, and secondary cable cavity (12) and secondary cable ditch (14) junction are equipped with wet curtain of water-cooling (15), and the top of wet curtain of water-cooling (15) is equipped with cooling water dripper (13), and the air outlet of secondary cable cavity (12) passes through the extrinsic cycle air intake intercommunication of air ducting and air cooler (2).
3. The wet curtain air cooling system for electrical equipment cabinets of claim 1 or 2, wherein: an external circulation air inlet (7) of the air cooling external circulation system is arranged at the upper end of the outer side of the cabinet door (42) of the air cooler (2), and an external circulation air outlet (1) of the air cooling external circulation system is arranged at the lower end of the outer side of the cabinet door (42) of the air cooler (2).
4. The electrical equipment cabinet wet curtain air cooling system as claimed in claim 2, wherein:
the air guiding device comprises an air guiding cover (10) communicated with the secondary cable cavity (12) and an air collecting cover (9) installed at an external circulation air inlet (7) of the air cooler (2), and the air collecting cover (9) is communicated with the air guiding cover (10) through opening and closing of an electric cabinet door (42).
5. The electrical equipment cabinet wet curtain air cooling system as claimed in claim 4, wherein:
the air guide cover (10) has elasticity along the directions of an air inlet and an air outlet of the air guide cover, a sealing ring (27) is arranged at the air outlet of the air guide cover (10) and is obliquely arranged along the opening and closing direction of an electric cabinet door (42), the air inlet of the air collection cover (9) is obliquely pushed to the air outlet of the air guide cover (10) through opening and closing of the electric cabinet door (42), and the air outlet of the air guide cover (10) enables the air collection cover (9) and the air guide cover (10) to be sealed and communicated under the elastic action of the air outlet of the air guide cover (10).
6. The electrical equipment cabinet wet curtain air cooling system as claimed in claim 4, wherein: an external circulation fan (11) for providing power for the air-cooled external circulation system is arranged in the air guide cover (10), and an internal circulation fan (8) for providing power for the air-cooled internal circulation system is arranged between the heating body (41) and the air cooler (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121484451.9U CN216251809U (en) | 2021-07-01 | 2021-07-01 | Wet curtain air cooling system of electrical equipment cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121484451.9U CN216251809U (en) | 2021-07-01 | 2021-07-01 | Wet curtain air cooling system of electrical equipment cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216251809U true CN216251809U (en) | 2022-04-08 |
Family
ID=80981512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121484451.9U Active CN216251809U (en) | 2021-07-01 | 2021-07-01 | Wet curtain air cooling system of electrical equipment cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216251809U (en) |
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2021
- 2021-07-01 CN CN202121484451.9U patent/CN216251809U/en active Active
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