CN210723820U - Direct current traction substation relay protection device - Google Patents

Abstract

The utility model discloses a relay protection device for a DC traction substation, which comprises a device main body and a heat dissipation box. An installation plate is fixedly installed in the inside of the device main body, and a heat conduction plate is fixedly installed on the back of the installation plate. One side of the heat conduction plate is fixedly connected with a cooling water pipe, both sides of the device body are provided with ventilation grilles, one side of the inner wall of the heat dissipation box is fixedly installed with a heat dissipation fan, and the connection between the device body and the heat dissipation box is fixed A ventilation duct is installed. The DC traction substation relay protection device, through the heat transfer of the heat conduction plate, and the cooperation of the cooling water pipe, the water tank, the micro pressure pump, the water inlet pipe, the water outlet pipe and the return pipe, can use the principle of water cooling to cool the installation board. Cooling and improving the heat dissipation efficiency of the device, through the arrangement of the cooling fan and the ventilation pipe, the cooling fan can extract the heat inside the device from the ventilation pipe, thereby improving the heat dissipation rate of the device.

Description

A relay protection device for DC traction substation

technical field

The utility model relates to the technical field of relay protection devices, in particular to a relay protection device for a DC traction substation.

Background technique

With the rapid development of the economy, more and more cities choose urban rail transit as public transportation. Because rail transit uses low-voltage DC power supply, it is more economical. Most domestic rail transit uses 1500V or 750V DC to supply power to locomotives. The DC traction power supply voltage is low, and the short-circuit current will cause great harm to the equipment when a short circuit occurs; the feeder current of the traction substation will change greatly with different operating conditions such as acceleration and braking of the locomotive; The distance of the traction substation varies greatly. Therefore, the relay protection device is a very important protection device, and the DC traction relay protection device is an important protection device for the DC traction power supply system.

At present, due to the complex internal structure of the relay protection device, there will be a large amount of heat inside the relay protection device during operation, which cannot be dissipated. The existing DC traction relay protection device has poor heat dissipation performance, which easily affects the life of the parts. Therefore, a DC traction substation relay protection device with high heat dissipation efficiency is required.

Utility model content

(1) Technical problems solved

Aiming at the deficiencies of the prior art, the utility model provides a relay protection device for a DC traction substation, which solves the problems raised in the above background technology.

(2) Technical solutions

In order to achieve the above purpose, the present utility model is achieved through the following technical solutions: a DC traction substation relay protection device, comprising a device main body and a heat dissipation box, the top of the device main body is fixedly installed with a heat dissipation box, and the device main body is provided with a heat dissipation box. A mounting plate is fixedly installed inside the mounting plate, a heat-conducting plate is fixedly installed on the back of the mounting plate, a cooling water pipe is fixedly connected to one side of the heat-conducting plate, and a water tank and a miniature heater are installed inside the main body of the device on one side of the cooling water pipe. pressure pump, the output end of the micro pressure pump is fixedly connected with a water inlet pipe, the end of the water inlet pipe away from the micro pressure pump is fixedly connected with the water tank, and one side of the water tank is fixedly connected with a water outlet pipe, the water outlet pipe The end away from the water tank is fixedly connected with the cooling water pipe, the end of the cooling water pipe away from the water outlet pipe is fixedly connected with a return pipe, and the end of the return pipe away from the cooling water pipe is fixedly connected with the micro pressure pump, and both sides of the device main body are fixedly connected. A ventilation grille is opened, a cooling fan is fixedly installed on one side of the inner wall of the cooling box, and a ventilation pipe is fixedly installed at the connection between the device main body and the cooling box.

Optionally, a door body is movably connected to the front of the device body through a hinge, and a transparent window is provided in the middle of the door body.

Optionally, a cover plate is fixedly installed on one side of the device main body through bolts.

Optionally, a weather shield is provided on the outer surface of the device body above the ventilation grille, and a dust net is fixedly installed on the inner wall of the device body on one side of the ventilation grille.

Optionally, a ventilation net is fixedly installed on one side of the heat dissipation box close to the heat dissipation fan.

Optionally, the bottom of the device body is fixedly installed with support legs, the number of the support legs is four, and the four support legs are respectively arranged at four corners of the bottom of the device body.

(3) Beneficial effects

The utility model provides a relay protection device for a DC traction substation, which has the following beneficial effects:

1. The relay protection device of the DC traction substation can transfer the heat emitted by the electronic devices installed on the installation board through the setting of the heat conduction plate, through the cooling water pipe, the water tank, the micro pressure pump, the water inlet pipe and the outlet. The arrangement of the water pipe and the return pipe can use the principle of water cooling to cool the installation board, so as to achieve the effect of cooling and heat dissipation, and improve the heat dissipation efficiency of the device.

2. The relay protection device of the DC traction substation, through the setting of the cooling fan and the ventilation pipe, the cooling fan can extract the heat inside the device from the ventilation pipe, thereby improving the heat dissipation rate of the device.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the front view sectional structure schematic diagram of the utility model;

FIG. 3 is a schematic side view of the cross-sectional structure of the utility model.

In the figure: 1. Main body of the device; 2. Cooling box; 3. Mounting plate; 4. Heat conduction plate; 5. Cooling water pipe; 6. Water tank; 7. Micro pressure pump; 8. Water inlet pipe; 9. Water outlet pipe; 10 , return pipe; 11, ventilation grille; 12, cooling fan; 13, ventilation pipe; 14, door body; 15, transparent window; 16, cover plate; 17, windshield; 18, dustproof net; 19, ventilation Net; 20. Supporting legs.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

1 to 3, the present utility model provides a technical solution: a DC traction substation relay protection device, comprising a device main body 1 and a heat dissipation box 2, the top of the device main body 1 is fixedly installed with a heat dissipation box 2, A mounting plate 3 is fixedly installed inside the device main body 1, a heat-conducting plate 4 is fixedly installed on the back of the mounting plate 3, a cooling water pipe 5 is fixedly connected to one side of the heat-conducting plate 4, and a cooling water pipe 5 is provided inside the device main body 1 on one side. The water tank 6 and the miniature booster pump 7, the output end of the miniature booster pump 7 is fixedly connected with a water inlet pipe 8, the end of the water inlet pipe 8 away from the miniature booster pump 7 is fixedly connected with the water tank 6, and one side of the water tank 6 is fixedly connected with an outlet. The water pipe 9, the end of the water outlet pipe 9 away from the water tank 6 is fixedly connected with the cooling water pipe 5, the end of the cooling water pipe 5 away from the water outlet pipe 9 is fixedly connected with a return pipe 10, and the end of the return pipe 10 away from the cooling water pipe 5 is fixed with the micro pressure pump 7 Connection, through the setting of the heat conduction plate 4, the heat emitted by the electronic device installed on the installation plate 3 can be transferred, through the cooling water pipe 5, the water tank 6, the micro pressure pump 7, the water inlet pipe 8, the water outlet pipe 9 and the return pipe 10, the micro pressure pump 7 pressurizes the water in the water tank 6 into the cooling water pipe 5, so that the cooling water pipe 5 cools the heat-conducting plate 4, and then the heat-conducting plate 4 cools the mounting plate 3, thereby reducing the temperature. At the same time, the water circulation is realized through the return pipe 10. Ventilation grilles 11 are provided on both sides of the device main body 1. The outer surface of the device main body 1 is located above the ventilation grille 11. The inner wall is located on one side of the ventilation grille 11, and a dustproof net 18 is fixedly installed. Through the setting of the ventilation grille 11, convection air can be formed inside the device, so that the device can be ventilated and dissipated. Rainwater enters the inside of the device, and the setting of the dustproof net 18 can prevent external debris from entering the inside of the device, thereby avoiding the interference of the internal devices by external factors. One side of the inner wall of the cooling box 2 is fixedly installed with a cooling fan 12. A ventilation pipe 13 is fixedly installed at the connection between the main body 1 and the cooling box 2 , and a ventilation net 19 is fixedly installed on the side of the cooling box 2 close to the cooling fan 12 . The internal heat is extracted from the ventilation pipe 13, thereby improving the heat dissipation rate of the device. The setting of the ventilation net 19 can prevent the cooling fan 12 from being disturbed by the outside world. A transparent window 15 is arranged in the middle. The setting of the transparent window 15 is convenient for observing the internal situation of the device. One side of the device main body 1 is fixedly installed with a cover plate 16 by bolts. For maintenance, the bottom of the device main body 1 is fixedly installed with supporting legs 20 , the number of which is four, and the four supporting legs 20 are respectively arranged at the four corners of the bottom of the device main body 1 .

The electrical components appearing in this article are all connected with the external main controller and 220V mains, and the main controller can be a conventional known device controlled by a computer or the like.

To sum up, the relay protection device of the DC traction substation can transfer the heat emitted by the electronic devices installed on the mounting plate 3 through the setting of the heat conducting plate 4, and the heat emitted by the electronic devices installed on the mounting plate 3 can be transmitted through the cooling water pipe 5, the water tank 6, the micro heater. The setting of the pressure pump 7, the water inlet pipe 8, the water outlet pipe 9 and the return pipe 10, the micro pressure pump 7 pressurizes the water in the water tank 6 into the cooling water pipe 5, so that the cooling water pipe 5 cools the heat conduction plate 4, and then The heat-conducting plate 4 cools the mounting plate 3, thereby achieving the effect of cooling and radiating heat, and improving the heat-dissipation efficiency of the device. Thereby, the heat dissipation rate of the device is improved.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (6)

1. A relay protection device for a DC traction substation, comprising a device main body (1) and a cooling box (2), characterized in that: a cooling box (2) is fixedly installed on the top of the device main body (1), so A mounting plate (3) is fixedly installed inside the device main body (1), a heat-conducting plate (4) is fixedly installed on the back of the mounting plate (3), and a cooling water pipe is fixedly connected to one side of the heat-conducting plate (4). (5), a water tank (6) and a miniature booster pump (7) are provided inside the device body (1) on one side of the cooling water pipe (5), and the output end of the miniature booster pump (7) is fixedly connected There is a water inlet pipe (8), one end of the water inlet pipe (8) away from the micro pressure pump (7) is fixedly connected with the water tank (6), and one side of the water tank (6) is fixedly connected with a water outlet pipe (9), One end of the water outlet pipe (9) away from the water tank (6) is fixedly connected with the cooling water pipe (5), and one end of the cooling water pipe (5) away from the water outlet pipe (9) is fixedly connected with a return pipe (10). One end of the pipe (10) away from the cooling water pipe (5) is fixedly connected to the micro pressure pump (7), ventilation grilles (11) are provided on both sides of the device main body (1), and the heat dissipation box (2) A cooling fan (12) is fixedly installed on one side of the inner wall, and a ventilation pipe (13) is fixedly installed at the connection between the device main body (1) and the cooling box (2). 2 . The relay protection device of a DC traction substation according to claim 1 , wherein the front of the device main body ( 1 ) is movably connected with a door body ( 14 ) through hinges, and the door body ( The middle part of 14) is provided with a transparent window (15). 3 . The relay protection device for a DC traction substation according to claim 1 , wherein a cover plate ( 16 ) is fixed and installed on one side of the device main body ( 1 ) by bolts. 4 . 4. A DC traction substation relay protection device according to claim 1, characterized in that: the outer surface of the device main body (1) is located above the ventilation grille (11) and is provided with a rain shield (17). ), and a dust-proof net (18) is fixedly installed on the inner wall of the device main body (1) on one side of the ventilation grille (11). 5 . The relay protection device of a DC traction substation according to claim 1 , wherein a ventilation net ( 19 ) is fixedly installed on the side of the cooling box ( 2 ) close to the cooling fan ( 12 ). 6 . 6 . The relay protection device for a DC traction substation according to claim 1 , wherein: the bottom of the device main body ( 1 ) is fixedly installed with support legs ( 20 ), and the support legs ( 20 ) The number is four, and the four support legs (20) are respectively arranged at the four corners of the bottom of the device main body (1).

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