CN206531916U - Distributed small current grounding line selection device - Google Patents

Abstract

The utility model discloses a decentralized small-current grounding line selection device, comprising a small-current grounding line selection box, wherein a base plate is installed at the bottom of the small-current grounding line selection box, a plurality of brackets are installed at the bottom of the base plate, a mounting groove and a fixing groove are arranged inside the base plate, an electric push rod is arranged inside the mounting groove, a baffle is arranged on the electric push rod, an exhaust port is arranged at the center of the base plate, a sealing gasket is arranged inside the fixing groove, electric heating plates are arranged on both sides of the inner wall of the small-current grounding line selection box, a fan is arranged inside the small-current grounding line selection box, an air inlet pipe is arranged on one side of the fan, an exhaust pipe is arranged on the other side of the fan, a partition is arranged above the fan, a through hole is arranged on the partition, a DSP chip is arranged on the partition, a control box is arranged on the top inner wall of the small-current grounding line selection box, a temperature sensor is arranged at the bottom of the control box, and an AT89S51 single-chip microcomputer is arranged inside the control box. The device has a compact structure and is easy to use.

Description

Distributed small current grounding line selection device

technical field

The utility model relates to the technical field of small-current power connection systems, in particular to a distributed small-current grounding line selection device.

Background technique

The small current system refers to the neutral point not directly grounded system, including the neutral point not grounded system, the neutral point through the arc suppressing coil grounding system or the neutral point through the resistance grounding system, and the power grid with a voltage level of 66 kV and below Generally, this system is adopted; domestic small current line selection devices adopt line selection methods such as group ratio, amplitude and phase, fifth harmonic method, power direction method, active current method, residual current incremental method, and injection method. , median resistance method, etc. As far as the data collection method is concerned, almost all line selection devices use a single CPU for data collection and analysis, and there are also line selection devices called multi-CPU, while the existing distributed small current The heat dissipation and heat preservation performance of the grounding wire selection device is poor. When the temperature is greater than or lower than the allowable operating temperature range of the device, the service life of the device will be reduced. The design is a decentralized small current grounding wire selection device that is convenient for automatic temperature control. is worth considering.

Utility model content

The purpose of this utility model is to provide a distributed small current grounding line selection device to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: decentralized small current grounding line selection device, including a small current grounding line selection box, the bottom of the small current grounding line selection box is installed with a bottom plate, and the bottom of the bottom plate is installed There are several brackets, the inside of the bottom plate is provided with a mounting groove and a fixing groove, an electric push rod is installed inside the installation groove, a baffle plate is installed on the electric push rod, and a row is arranged at the center of the bottom plate. The inside of the fixed groove is equipped with a sealing gasket, the inner walls of both sides of the small current grounding line selection box are equipped with electric heaters, the inside of the small current grounding line selection box is equipped with a fan, and the fan is installed inside the small current grounding line selection box. An air inlet pipe is installed on one side, an exhaust pipe is installed on the other side of the fan, a partition is installed above the fan, a through hole is installed on the partition, and a DSP chip is installed on the partition , the top inner wall of the small current grounding line selection box is equipped with a control box, the bottom of the control box is equipped with a temperature sensor, the inside of the control box is equipped with an AT89S51 single-chip microcomputer, the electric heater, the electric push rod, Both the fan and the temperature sensor are electrically connected to the AT89S51 single-chip electromechanical device.

Further, the central points of the installation groove and the fixing groove are on the same horizontal line.

Further, the control box is fixedly connected with the small current grounding box through superglue.

Further, the electric heating plate is composed of an upper aluminum plate, an electric heating wire, a heat-conducting silica gel and a lower aluminum plate.

Further, the electric push rod is composed of a driving motor, a reduction gear, a screw, a nut, a guide sleeve, a push rod, a sliding seat, a spring, a casing, a turbine and a micro control switch.

Further, the discharge port of the exhaust pipe is located directly above the DSP chip.

Compared with the prior art, the beneficial effect of the utility model is: the distributed small current grounding line selection device, the temperature sensor monitors the temperature inside the small current grounding line selection box, and transmits the information to the AT89S51 microcontroller, when the temperature is greater than Set value, the AT89S51 single-chip microcomputer controls the fan to work, which is convenient for cooling the inside of the small current grounding line selection box. The single-chip microcomputer controls the movement of the electric push rod, and then drives the movement of the baffle to make it move into the fixed groove, which is convenient for heat preservation and dust prevention. A gasket is installed inside the fixed groove to make the sealing effect better.

Description of drawings

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

Fig. 2 is a schematic diagram of the overall internal structure of the utility model;

Fig. 3 is a schematic diagram of the internal structure of the control box of the present utility model;

Fig. 4 is the installation schematic diagram of the baffle plate of the present utility model;

In the figure: 1- small current grounding line selection box; 2- through hole; 3- electric heater; 4- electric push rod; 5- installation slot; 6- bracket; Air inlet pipe; 10-fan; 11-exhaust pipe; 12-baffle; 13-DSP chip; 14-control box; 15-temperature sensor; 16-AT89S51 single-chip microcomputer;

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-4, the utility model provides a technical solution: decentralized small current grounding line selection device, including small current grounding line selection box 1, the bottom of small current grounding line selection box 1 is equipped with a bottom plate, the bottom of the bottom plate Several brackets 6 are installed, and the inside of the base plate is provided with a mounting groove 5 and a fixing groove 17. An electric push rod 4 is installed inside the mounting groove 5, and a baffle plate 7 is installed on the electric push rod 4. The tuyere 8, the interior of the fixed groove 17 are equipped with a gasket 18, the inner walls of both sides of the small current grounding line selection box 1 are equipped with electric heaters 3, and the inside of the small current grounding line selection box 1 is equipped with a fan 10, and the fan 10 An air inlet pipe 9 is installed on one side, an exhaust pipe 11 is installed on the other side of the fan 10, a partition 12 is installed above the fan 10, a through hole 2 is installed on the partition 12, and a DSP chip is installed on the partition 12 13. A control box 14 is installed on the top inner wall of the small current grounding selection box 1, a temperature sensor 15 is installed on the bottom of the control box 14, and an AT89S51 single-chip microcomputer 16, an electric heater 3, an electric push rod 4, and a fan are installed inside the control box 14. 10 and temperature sensor 15 are all electrically connected with AT89S51 single-chip microcomputer 16.

Further, the central points of the installation groove 5 and the fixing groove 17 are on the same horizontal line, which is convenient for fixing the baffle 7 .

Further, the control box 14 is fixedly connected with the small current grounding selection box 1 by superglue, which is easy to use and securely connected.

Further, the electric heater 3 is composed of an upper aluminum plate, an electric heating wire, a heat-conducting silica gel and a lower aluminum plate, which is convenient for heating the inside of the device.

Further, the electric push rod 4 is composed of a driving motor, a reduction gear, a screw, a nut, a guide sleeve, a push rod, a sliding seat, a spring, a casing, a turbine and a micro-control switch, so as to facilitate linear reciprocating motion of the baffle plate 7 .

Further, the discharge port of the exhaust pipe 11 is located directly above the DSP chip 13 to facilitate heat dissipation.

Working principle: First, the temperature sensor 15 monitors the temperature inside the small current grounding selection box 1, and transmits the information to the AT89S51 single-chip microcomputer 16. When the temperature is greater than the set value, the AT89S51 single-chip microcomputer 16 controls the operation of the fan 10, which is convenient for small current grounding The inside of the line selection box 1 cools down. When the temperature is lower than the set value, the AT89S51 single-chip microcomputer 16 controls the electric heater 3 to work, which is convenient for heating the inside of the small current grounding line selection box 1. At the same time, the AT89S51 single-chip microcomputer 16 controls the movement of the electric push rod 4, and then drives Baffle plate 7 moves, and it moves in the fixed groove 17, is convenient to heat preservation and dustproof, and the inside of fixed groove 17 is equipped with gasket 18, makes its sealing effect better.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (6)

1. distributing Small Electric Current Earthing And Routing Device, including small current earthing wire-selecting case（1）, it is characterised in that：The low current Earthing wire-selecting case（1）Bottom bottom plate is installed, the bottom of the bottom plate is provided with several supports（6）, the bottom plate it is interior Portion is provided with mounting groove（5）And fixing groove（17）, the mounting groove（5）Inside electric pushrod is installed（4）, it is described electronic to push away Bar（4）On baffle plate is installed（7）, the center of the bottom plate is provided with exhaust outlet（8）, the fixing groove（17）Inside install There is sealing gasket（18）, the small current earthing wire-selecting case（1）Both sides inwall be mounted on electric heating piece（3）, the low current connects Ground route selection case（1）Inside blower fan is installed（10）, the blower fan（10）Side blast pipe is installed（9）, the blower fan （10）Opposite side exhaust duct is installed（11）, the blower fan（10）Top dividing plate is installed（12）, the dividing plate（12）On Through hole is installed（2）, the dividing plate（12）On dsp chip is installed（13）, the small current earthing wire-selecting case（1）Top in Wall is provided with control cabinet（14）, the control cabinet（14）Bottom temperature sensor is installed（15）, the control cabinet（14）'s Inside is provided with AT89S51 single-chip microcomputers（16）, the electric heating piece（3）, the electric pushrod（4）, the blower fan（10）With it is described Temperature sensor（15）With the AT89S51 single-chip microcomputers（16）It is electrically connected with.

2. distributing Small Electric Current Earthing And Routing Device according to claim 1, it is characterised in that：The mounting groove（5）With Fixing groove（17）Central spot in same horizontal line.

3. distributing Small Electric Current Earthing And Routing Device according to claim 1, it is characterised in that：The control cabinet（14）With Small current earthing wire-selecting case（1）It is fixedly connected by seccotine.

4. distributing Small Electric Current Earthing And Routing Device according to claim 1, it is characterised in that：The electric heating piece（3）By Upper aluminium sheet, heating wire, heat conductive silica gel and lower aluminum sheet composition.

5. distributing Small Electric Current Earthing And Routing Device according to claim 1, it is characterised in that：The electric pushrod（4） By motor, reduction gearing, screw rod, nut, guide pin bushing, push rod, slide, spring, shell, turbine and fine motion controlling switch group Into.

6. distributing Small Electric Current Earthing And Routing Device according to claim 1, it is characterised in that：The exhaust duct（11）'s Discharge port is located at dsp chip（13）Surface.