CN211126487U

CN211126487U - Microcomputer relay protection device suitable for low-voltage distribution network

Info

Publication number: CN211126487U
Application number: CN201922418168.5U
Authority: CN
Inventors: 艾克威
Original assignee: Inner Mongolia Tairu Electric Power Technology Co ltd
Current assignee: Inner Mongolia Tairu Electric Power Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-07-28
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a computer relay protection device suitable for low pressure distribution network, the power distribution box comprises a box body, the both sides of bottom half are all through fixedly connected with base, the box includes casing and lower casing, goes up the internal surface of casing and the surface swing joint of casing down, and the equal fixedly connected with connecting block in both sides at casing top down, the top of connecting block and the bottom fixed connection of last casing, the sliding tray has all been seted up to the inside of two connecting blocks, the utility model relates to a computer relay protection device technical field. This microcomputer relay protection device suitable for low pressure distribution network sets up the sliding tray through the inside at the connecting block, and cooperation gag lever post and spacing spring can fix the filter, and then can certain degree prevent that the dust from getting into inside, disturbs the circuit board of inside, recycles actuating lever and adaptation groove and can take off the filter is quick to be convenient for wash the filter, improve the life of device.

Description

Microcomputer relay protection device suitable for low-voltage distribution network

Technical Field

The utility model relates to a computer relay protection technical field specifically is a computer relay protection device suitable for low pressure distribution network.

Background

The microcomputer relay protection is formed by applying a microcomputer or a microprocessor, an input signal of the microcomputer relay protection is an analog quantity of a power system, and the computer can only calculate and judge a digital quantity, so that the analog quantity input by the power system through a voltage transformer and/or a current transformer is preprocessed firstly, the relay protection takes a fundamental wave analog quantity in the input signal under most conditions, according to a sampling theorem, if the frequency of a measured signal is f0, the sampling frequency f1 is required to be more than 2f0, otherwise, a sampling value cannot be fitted and restored to an original curve, and harmonic components more than 0.5f1 are required to be filtered by using an analog low-pass filter before entering a sampler.

Most of existing microcomputer relay protection devices can emit heat, so that through holes can be formed in the top or the bottom of the microcomputer relay protection device, dust can enter the through holes, the dust interferes electric elements inside the microcomputer relay protection device to a certain degree, and the service life of the microcomputer relay protection device is seriously affected.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a computer relay protection device suitable for low pressure distribution network has solved and has seted up the through-hole and can get into the dust, and the dust has the problem of the interference of certain degree to the inside electric property original paper of computer relay protection device.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a computer relay protection device suitable for low pressure distribution network, the power distribution box comprises a box body, the both sides of bottom half all are through fixedly connected with base, the box includes casing and lower casing, go up the internal surface of casing and the surface swing joint of casing down, the equal fixedly connected with connecting block in both sides at casing top down, the top of connecting block and the bottom fixed connection of last casing, two the sliding tray, two have all been seted up to the inside of connecting block the equal sliding connection of internal surface of sliding tray has the gag lever post, two the relative one end of gag lever post all runs through the connecting block and extends to the outside of connecting block, two equal swing joint has the filter between the relative one end of gag lever post, the spacing groove has all been seted up to the both sides of filter.

Preferably, two the equal fixedly connected with spacing spring of internal surface of spacing groove, two the one end that spacing spring kept away from relatively all with the one end fixed connection of gag lever post, the positive fixedly connected with actuating lever of gag lever post, the one end through connection piece of actuating lever extends to the outside of connecting block, the adaptation groove has been seted up in the front of connecting block.

Preferably, the bottom of the inner cavity of the upper shell is fixedly connected with a heat radiation fan, fixing rods are fixedly connected to two sides of the heat radiation fan, a vent is formed in the top of the upper shell, and the heat radiation fan is located below the vent.

Preferably, the two sides of the upper shell are fixedly connected with fixing columns, a carrying handle is fixedly connected between the tops of the two fixing columns, and the front face of the lower shell is fixedly connected with a display screen.

Preferably, the outer surface of the driving rod is in sliding connection with the inner surface of the adapting groove, and one side of the outer surface of the limiting rod is in sliding connection with the inner surface of the limiting groove.

Preferably, the number of the ventilation openings is provided with a plurality of ventilation openings, and the ventilation openings are uniformly distributed on the top of the upper shell.

Advantageous effects

The utility model provides a computer relay protection device suitable for low pressure distribution network. Compared with the prior art, the method has the following beneficial effects:

(1) the microcomputer relay protection device suitable for the low-voltage distribution network is characterized in that connecting blocks are fixedly connected to two sides of the top of a lower shell, the top of each connecting block is fixedly connected with the bottom of an upper shell, sliding grooves are formed in the two connecting blocks, limiting rods are slidably connected to the inner surfaces of the two sliding grooves, the opposite ends of the two limiting rods penetrate through the connecting blocks and extend to the outer portions of the connecting blocks, a filter plate is movably connected between the opposite ends of the two limiting rods, limiting grooves are formed in two sides of the filter plate, limiting springs are fixedly connected to the inner surfaces of the two limiting grooves, the ends, far away from the two limiting springs, are fixedly connected with one ends of the limiting rods, a driving rod is fixedly connected to the front of each limiting rod, one end of the driving rod penetrates through the connecting blocks and extends to the outer portions of the connecting blocks, an adaptive groove is, the filter can be fixed with cooperation gag lever post and spacing spring, and then can certain degree prevent that the dust from getting into inside, disturb the circuit board of inside, recycle actuating lever and adaptation groove can be with the quick take off of filter to be convenient for wash the filter, improve device's life.

(2) This microcomputer relay protection device suitable for low voltage distribution network, bottom fixedly connected with radiator fan through the inner chamber at last casing, the equal fixedly connected with dead lever in radiator fan's both sides, the vent has been seted up at the top of last casing, and radiator fan is located the below of vent, sets up radiator fan through the below at the vent, promotion microcomputer relay protection device's radiating effect that can be by a wide margin for microcomputer relay protection device can the steady operation.

Drawings

FIG. 1 is a front view of the external structure of the microcomputer relay protection device of the present invention;

FIG. 2 is a partial sectional view of the microcomputer relay protection device according to the present invention;

FIG. 3 is an enlarged view of a portion of the structure of FIG. 1;

fig. 4 is a top view of the internal structure of the connecting block of the present invention.

In the figure: 1-box, 2-base, 3-upper shell, 4-lower shell, 5-connecting block, 6-sliding groove, 7-limiting rod, 8-filtering plate, 9-limiting groove, 10-limiting spring, 11-driving rod, 12-adapting groove, 13-radiating fan, 14-carrying handle, 15-ventilation opening, 16-fixing column, 17-display screen and 18-fixing rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a microcomputer relay protection device suitable for a low-voltage distribution network comprises a box body 1, electronic parts such as a power supply and the like are arranged in the box body 1, two sides of the bottom of the box body 1 are fixedly connected with a base 2, the box body 1 comprises an upper shell 3 and a lower shell 4, a clamping mode is adopted between the upper shell 3 and the lower shell 4, any clamping mode can be adopted, two sides of the upper shell 3 are fixedly connected with fixed columns 16, a carrying handle 14 is fixedly connected between the tops of the two fixed columns 16, the microcomputer relay protection device is convenient to carry through the carrying handle 14, a display screen 17 is fixedly connected to the front side of the lower shell 4, a heat dissipation fan 13 is fixedly connected to the bottom of an inner cavity of the upper shell 3, the heat dissipation fan 13 is electrically connected with the power supply in the microcomputer relay protection device, fixed rods 18 are fixedly connected to two sides of the heat dissipation fan 13, a vent, the number of the ventilation openings 15 is multiple, the ventilation openings are evenly distributed at the top of the upper shell 3, the heat radiation fan 13 is positioned below the ventilation openings 15, the inner surface of the upper shell 3 is movably connected with the outer surface of the lower shell 4, the two sides of the top of the lower shell 4 are fixedly connected with the connecting blocks 5, the tops of the connecting blocks 5 are fixedly connected with the bottom of the upper shell 3, the insides of the two connecting blocks 5 are respectively provided with a sliding groove 6, the inner surfaces of the two sliding grooves 6 are respectively and slidably connected with a limiting rod 7, the limiting rods 7 can be clamped when being in contact with the insides of the sliding grooves 6, the limiting spring 10 is in a stretching state, the opposite ends of the two limiting rods 7 respectively penetrate through the connecting blocks 5 and extend to the outsides of the connecting blocks 5, a filter plate 8 is movably connected between the opposite ends of the two limiting rods 7, the aperture of the filter plate, both sides of the filter plate 8 are provided with limit grooves 9, the inner surfaces of the two limit grooves 9 are fixedly connected with limit springs 10, the ends, far away from each other, of the two limit springs 10 are fixedly connected with one end of the limit rod 7, the front surface of the limit rod 7 is fixedly connected with a driving rod 11, the outer surface of the driving rod 11 is connected with the inner surface of the adaptive groove 12 in a sliding manner, one side of the outer surface of the limit rod 7 is connected with the inner surface of the limit groove 9 in a sliding manner, one end of the driving rod 11 penetrates through the connecting block 5 and extends to the outside of the connecting block 5, the front surface of the connecting block 5 is provided with the adaptive groove 12, the filter plate can be fixed by matching the limit rod 7 and the limit spring 10 through arranging the sliding groove 6 in the connecting block 5, so that dust can be prevented from entering the inside to a certain extent, the circuit, thereby being convenient for wash filter 8, improving the life of the device.

When in use, the protective device is started by a power supply, the heat radiation fan 13 on the fixed rod 14 is started to rotate by the internal power supply, so that upward airflow is generated, further, the heat emitted by the microcomputer relay protection device is dissipated through the ventilation opening 15, when the filter plate 8 needs to be cleaned, firstly, the driving rod 11 is pushed upwards to make the driving rod 11 slide in the adapting groove 12, the limiting rod 7 is driven to slide upwards on the inner surface of the sliding groove 6, driven by the limit spring 10, the two limit rods 7 move towards the opposite side, so that the limit rods 7 are separated from the connecting block 5, so that the filter plate 8 can be removed, when the filter plate 8 needs to be mounted, the driving rods 11 are firstly pulled to the two sides, and the driving rod is sent into the adapting groove 12, at the moment, the limiting spring 10 is in the stretching state again, and then the driving rod is pushed downwards so that the outer surface of the limiting rod 7 is contacted with the inner surface of the sliding groove 6.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a computer relay protection device suitable for low pressure distribution network, includes box (1), the both sides of box (1) bottom all are through fixedly connected with base (2), its characterized in that: the box body (1) comprises an upper shell (3) and a lower shell (4), the inner surface of the upper shell (3) is movably connected with the outer surface of the lower shell (4), the two sides of the top of the lower shell (4) are fixedly connected with connecting blocks (5), the top of each connecting block (5) is fixedly connected with the bottom of the upper shell (3), two sliding grooves (6) are formed in the connecting blocks (5), two limiting rods (7) are slidably connected with the inner surfaces of the sliding grooves (6), the opposite ends of the limiting rods (7) penetrate through the connecting blocks (5) and extend to the outside of the connecting blocks (5), two filter plates (8) are movably connected between the opposite ends of the limiting rods (7), and limiting grooves (9) are formed in the two sides of the filter plates (8).

2. The microcomputer relay protection device suitable for the low-voltage distribution network according to claim 1, wherein: two the equal fixedly connected with spacing spring (10) of internal surface of spacing groove (9), two the one end that spacing spring (10) kept away from relatively all with the one end fixed connection of gag lever post (7), the positive fixedly connected with actuating lever (11) of gag lever post (7), the one end through connection piece (5) of actuating lever (11) and extend to the outside of connecting block (5), adaptation groove (12) have been seted up in the front of connecting block (5).

3. The microcomputer relay protection device suitable for the low-voltage distribution network according to claim 1, wherein: go up the bottom fixedly connected with radiator fan (13) of the inner chamber of casing (3), the equal fixedly connected with dead lever (18) in both sides of radiator fan (13), vent (15) have been seted up at the top of going up casing (3), radiator fan (13) are located the below of vent (15).

4. The microcomputer relay protection device suitable for the low-voltage distribution network according to claim 1, wherein: the improved portable electronic device is characterized in that fixing columns (16) are fixedly connected to the two sides of the upper shell (3), a carrying handle (14) is fixedly connected between the tops of the two fixing columns (16), and a display screen (17) is fixedly connected to the front face of the lower shell (4).

5. The microcomputer relay protection device suitable for the low-voltage distribution network according to claim 2, wherein: the outer surface of the driving rod (11) is in sliding connection with the inner surface of the adapting groove (12), and one side of the outer surface of the limiting rod (7) is in sliding connection with the inner surface of the limiting groove (9).

6. The microcomputer relay protection device suitable for the low-voltage distribution network according to claim 3, wherein: the number of the ventilation openings (15) is provided with a plurality of ventilation openings, and the ventilation openings are uniformly distributed at the top of the upper shell (3).