Small integrated portable relay protection test teaching device and use method

Abstract

The application discloses a small integrated portable relay protection test teaching device and a use method thereof. The device comprises a box body, a reset button and a reclosing mode switching handle are arranged on the front side of the box body, a rectifier bridge and a line differential protection device are arranged in the box body, the operation surface and the display surface of the line differential protection device are located on the front side of the box body, a bottom protection plate is arranged at the bottom of the box body, a plurality of universal wheels are arranged at the bottom of the bottom protection plate, a front protection plate is hingedly connected to the bottom protection plate and arranged on the front side of the box body, a rear protection plate is hingedly connected to the bottom protection plate and arranged on the rear side of the box body, a top protection plate is arranged above the box body, the front side of the top protection plate is hingedly connected to the front protection plate, and the rear side of the top protection plate is hingedly connected to the rear protection plate. A first positioning assembly is arranged between the front protection plate and the top protection plate. A second positioning assembly is arranged between the top protection plate and the rear protection plate. A connecting mechanism in a separated state is arranged between the box body and the front protection plate. The device has the advantages of being not prone to faults and convenient to use.

Description

TECHNICAL FIELD

[0001] The present application belongs to a kind of small integrated portable relay protection test teaching device and method for use. BACKGROUND

[0002] In hydropower plant, for new incoming relay protection staff needs training, one of the training contents is to use relay protection test teaching device (referred to as teaching device) to simulate various line faults, so that the staff can better understand the working principle of line protection, overcome the situation of short construction period, long cycle, less experienced technical personnel, poor technical level and human factors causing omission, lack, work delay and other situations, and improve the staff's fault handling ability, maintenance quality and work efficiency, facilitate technical training and summary.

[0003] The existing teaching device includes a box body, a plurality of universal wheels are arranged at the bottom of the box body, a reset button and a reclosing mode switching handle are arranged at the front side of the box body, a protection pressing plate, a terminal array, a DC air switch, a rectifier bridge and a line differential protection device are arranged in the box body, and the operation surface and display surface of the line differential protection device are arranged at the front side of the box body.

[0004] The teaching device is used in cooperation with a relay protection instrument, the relay protection instrument outputs variable AC voltage to the line differential protection device in the teaching device, so that the line differential protection device generates fault information and corresponding actions to make the corresponding simulation circuit breaker connected thereto trip, and the line differential protection device can also transmit the fault information to a computer and a printer.

[0005] The existing teaching device is provided for each hydropower plant to use in turn, that is, there is a frequent transportation demand, and during transportation, the reset button, the reclosing mode switching handle and other devices are protruding outside the frame box, which are easy to be damaged by knocking, resulting in failure of the teaching device, and it is difficult to find suitable packaging materials for each transportation process. In addition, due to the low height of the teaching device itself, it is not convenient for the staff to operate during teaching, and it is necessary to find corresponding objects such as tables to raise the height for use, which brings inconvenience to the use of the teaching device. SUMMARY

[0006] The present application aims to provide a small integrated portable relay protection test teaching device and method for use. The present application has the advantages of not easy to fail and convenient to use.

[0007] The technical scheme of the present application: small integrated portable relay protection test teaching device, including box, the front side of the box is equipped with reset button and reclosing mode switch handle, the box is equipped with rectifier bridge and line differential protection device, the operation surface and display surface of line differential protection device are located on the front side of the box, characterized in that: the bottom of the box is equipped with bottom guard plate, the bottom of the bottom guard plate is equipped with multiple universal wheels, the front side of the box is equipped with front guard plate that is hinged with the bottom guard plate at lower end, the rear side of the box is equipped with rear guard plate that is hinged with the bottom guard plate at lower end, the top of the box is equipped with top guard plate, the front side of the top guard plate is hinged with the front guard plate, the rear side of the top guard plate is hinged with the rear guard plate;

[0008] First positioning assembly is arranged between the front guard plate and the top guard plate, the first positioning assembly comprises a first sliding groove at the front end of the top guard plate, a second sliding groove at the upper end of the front guard plate and two first sliding plates respectively at the front and rear sides of the front guard plate, and a first connecting plate is arranged between the two first sliding plates and passes through the second sliding groove;

[0009] Second positioning assembly is arranged between the top guard plate and the rear guard plate, the second positioning assembly comprises a third sliding groove at the rear end of the top guard plate, a fourth sliding groove at the upper end of the rear guard plate and two second sliding plates respectively at the front and rear sides of the top guard plate, and a second connecting plate is arranged between the two second sliding plates and passes through the third sliding groove;

[0010] The connecting mechanism in a separated state is arranged between the box and the front guard plate.

[0011] In the small integrated portable relay protection test teaching device, the first positioning assembly and the second positioning assembly both have two.

[0012] In the small integrated portable relay protection test teaching device, the first positioning assembly has two first sliding grooves and two second sliding grooves, and the second positioning assembly has two third sliding grooves and two fourth sliding grooves.

[0013] In the small integrated portable relay protection test teaching device, the width of the first sliding plate is 1.5-2 times the distance between the two second sliding grooves, and the width of the second sliding plate is 1.5-2 times the distance between the two third sliding grooves.

[0014] In the small integrated portable relay protection test teaching device, the connecting mechanism comprises a first insert piece on the inner side of the front guard plate and a second insert piece on the rear side of the box, the upper end of the first insert piece is fixed with the front guard plate, both ends of the second insert piece are fixed with the box, and the second insert piece and the box form an insert hole matched with the first insert piece.

[0015] The small integrated portable relay protection test teaching device, the left and right sides of the box are provided with side guards, the bottom guard and the rear guard are fixed with the side guards, the two side guards are provided with a fence on the front side of the box, the fence is close to the bottom guard, and the front guard is locked and connected with the fence.

[0016] The small integrated portable relay protection test teaching device, the left and right sides of the box are provided with side guards, the bottom guard and the rear guard are fixed with the side guards, the two side guards are provided with a fence on the front side of the box, the fence is close to the bottom guard, and the front guard is locked and connected with the fence.

[0017] The small integrated portable relay protection test teaching device, the left and right sides of the box are provided with side guards, the bottom guard and the rear guard are fixed with the side guards, the two side guards are provided with a fence on the front side of the box, the fence is close to the bottom guard, and the front guard is locked and connected with the fence.

[0018] The small integrated portable relay protection test teaching device, the left and right sides of the box are provided with side guards, the bottom guard and the rear guard are fixed with the side guards, the two side guards are provided with a fence on the front side of the box, the fence is close to the bottom guard, and the front guard is locked and connected with the fence.

[0019] The use method of the small integrated portable relay protection test teaching device, when teaching, the lock between the front guard and the fence is opened, the front guard is turned up, the top guard is turned up, the front guard, the top guard and the rear guard are in the same plane, the first positioning assembly and the second positioning assembly are moved down, the front guard, the top guard and the rear guard are fixed in the same plane, the box is taken out, and the box is fixed on the front guard through the connecting mechanism.

[0020] The use method of the small integrated portable relay protection test teaching device, when teaching, the lock between the front guard and the fence is opened, the front guard is turned up, the top guard is turned up, the front guard, the top guard and the rear guard are in the same plane, the first positioning assembly and the second positioning assembly are moved down, the front guard, the top guard and the rear guard are fixed in the same plane, the box is taken out, and the box is fixed on the front guard through the connecting mechanism.

[0021] Compared with the prior art, the front guard, the rear guard and the top guard are added on the basis of the existing teaching device, the teaching device can be effectively protected during transportation, and the fragile parts of the teaching device are prevented from being damaged due to collision, and meanwhile, during teaching, the box is hung on the front guard by turning the front guard and the top guard, so that the height of the teaching device is effectively increased, and the teaching device is convenient to use.

[0022] By optimizing the structure of the positioning components between the guard plates, the connection strength between the guard plates after locking is increased, and it is not easy to deform, thus extending the service life. By optimizing the structure of the handle mechanism, the handle can be hidden, which not only prevents the handle from being damaged by bumps, but also reduces the volume. By limiting the maximum upward flip angle of the handles on both sides of the box by limiting the limit plate, the hands are not pinched when lifting the teaching device, and the use safety is good. In addition, through further structural optimization, the present invention also has the advantages of being small in size and basically not affecting the original portability, and has a greater structural strength and a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the present invention in a transport state.

[0024] Figure 2 It is a schematic diagram of the use of the present invention in the front view in the teaching state.

[0025] Figure 3 It is a schematic diagram of the use of the present invention in the rearward direction in the teaching state.

[0026] Figure 4 yes Figure 2 Enlarged view at point A.

[0027] Figure 5 This is a diagram of the box connected to the front guard.

[0028] The marks in the accompanying drawings are: 1-box, 2-reset button, 3-reclosing mode switching handle, 4-line differential protection device, 5-bottom guard plate, 6-universal wheel, 7-front guard plate, 8-rear guard plate, 9-top guard plate, 10-first slide, 11-second slide, 12-first slide plate, 13-first connecting plate, 14-third slide, 15-fourth slide, 16-second slide, 17-second connecting plate, 18-first plug, 19-second plug, 20-jack, 21-side guard plate, 22-enclosing plate, 23-first through hole, 24-second through hole, 25-mounting plate, 26-handle, 27-limiting plate, 28-pin, 29-slot. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and examples, but they are not intended to limit the present invention.

[0030] Example. Small integrated portable relay protection test teaching device, such as Figure 1 As shown, it includes a box body 1. A reset button 2 and a reclosing mode switching handle 3 are provided on the front side of the box body 1. A rectifier bridge and a line differential protection device 4 are provided inside the box body 1. The operation panel and display panel of the line differential protection device 4 are both located on the front side of the box body 1. The features are as follows:

[0031] The bottom of the box body 1 is provided with a bottom guard plate 5, the bottom of the bottom guard plate 5 is provided with a plurality of universal wheels 6, the front side of the box body 1 is provided with a front guard plate 7 hinged to the bottom guard plate 5 at the lower end, the rear side of the box body 1 is provided with a rear guard plate 8 hinged to the bottom guard plate 5 at the lower end, the upper side of the box body 1 is provided with a top guard plate 9, the front side of the top guard plate 9 is hinged to the front guard plate 7, and the rear side of the top guard plate 9 is hinged to the rear guard plate 8;

[0032] Two first positioning assemblies are arranged between the front guard plate 7 and the top guard plate 9, the first positioning assembly comprises two first sliding grooves 10 located at the front end of the top guard plate 9, two second sliding grooves 11 located at the upper end of the front guard plate 7, and two first sliding plates 12 respectively located at the front side and the rear side of the front guard plate 7, and a first connecting plate 13 is arranged between the two first sliding plates 12 and passes through the second sliding groove 11; the two first sliding grooves 10 are respectively aligned with the two second sliding grooves 11. The width of the first sliding plate 12 is 1.5-2 times the distance between the two second sliding grooves 11, so that the first sliding plate 12 covers the second sliding groove 11.

[0033] Two second positioning assemblies are arranged between the top guard plate 9 and the rear guard plate 8, the second positioning assembly comprises two third sliding grooves 14 located at the rear end of the top guard plate 9, two fourth sliding grooves 15 located at the upper end of the rear guard plate 8, and two second sliding plates 16 respectively located at the upper side and the lower side of the top guard plate 8, and a second connecting plate 17 is arranged between the two second sliding plates 16 and passes through the third sliding groove 14; the two third sliding grooves 14 are respectively aligned with the two fourth sliding grooves 15. The width of the second sliding plate 16 is 1.5-2 times the distance between the two third sliding grooves 14, so that the second sliding plate 16 covers the third sliding groove 14.

[0034] A connecting mechanism in a separated state is arranged between the box body 1 and the front guard plate 7. The connecting mechanism comprises a first insertion piece 18 located on the inner side of the front guard plate 7 and a second insertion piece 19 located on the rear side of the box body 1, the upper end of the first insertion piece 18 is fixed with the front guard plate 7, both ends of the second insertion piece 19 are fixed with the box body 1, and the second insertion piece 19 and the box body 1 form an insertion hole 20 matched with the first insertion piece 18.

[0035] The left and right sides of the box body 1 are both provided with side guard plates 21, the bottom guard plate 5 and the rear guard plate 8 are both fixed with the side guard plates 21, two side guard plates 21 are provided with a surrounding plate 22 located at the front side of the box body 1, the surrounding plate 22 is close to the bottom guard plate 5, and the front guard plate 7 is locked and connected with the surrounding plate 22 (the lock is omitted in the figure). The surrounding plate 22 increases the strength of the side guard plate 21 against lateral impact, and provides a force point for the fixation of the front guard plate 7.

[0036] The left and right sides and the top of the box body 1 are all provided with handle mechanisms, and the top guard plate 9 and the side guard plate 21 are both provided with first through holes 23 corresponding to the positions of the corresponding handle mechanisms.

[0037] The handle structure comprises a second through hole 24 on the side wall of the box body 1 and a mounting plate 25 in the box body 1, the mounting plate 25 covers the second through hole 24, the mounting plate 25 is fixed with the box body 1, the outer side of the mounting plate 25 is provided with a handle 26 in the second through hole 24, the handle 26 is U-shaped, and the two ends of the handle 26 are rotationally connected with the mounting plate 25. For the handles 26 on the left and right sides of the box body, the upper sides of the two ends of the handle are each provided with a limiting plate 27 fixed with the mounting plate 25, the limiting plate 27 limits the maximum upward turning angle of the handle, so that the hand is prevented from being pinched.

[0038] The top surface of the side guard plate 21 is provided with a pin 28 close to the front guard plate 7, and the bottom surface of the top guard plate 9 is provided with a notch 29 matched with the pin 28. The pin 28 increases the strength of the top guard plate against transverse impact.

[0039] As a further optimization, the inner sides of the side guard plate, the top guard plate and the rear guard plate can also be provided with a buffer layer, and the thickness of the buffer layer is 0.5 cm.

[0040] The use method is as follows: Figure 1 As shown in the figure, in the state of storage, transportation and other non-teaching use. When manually transporting, the bottom universal wheel can be used to facilitate forward movement, and when encountering steps or other obstacles, the entire device can be lifted by the top handle with one hand, or the entire device can be moved by holding the handles on both sides with both hands.

[0041] When teaching, open the lock, open the lock between the front guard plate 7 and the fence 22, turn up the front guard plate 7, turn up the top guard plate 9, so that the front guard plate 7, the top guard plate 9 and the rear guard plate 8 are in the same plane, move the first positioning assembly and the second positioning assembly downwards, so that the front guard plate 7, the top guard plate 9 and the rear guard plate 8 are fixed in the same plane, lift the box body 1 through the handle on the top of the box body 1, so that the first insertion piece 18 on the front guard plate 7 passes through the insertion hole 20, and the box body 1 is hung on the front guard plate 7, the height of the box body 1 is increased, and the teaching and operation are facilitated.

Claims

1. A small integrated portable relay protection test teaching device, comprising a box (1), a reset button (2) and a reclosing mode switching handle (3) being provided on the front side of the box (1), a rectifier bridge and a line differential protection device (4) being provided in the box (1), an operation surface and a display surface of the line differential protection device (4) being both located on the front side of the box (1), and characterized in that: The bottom of the box body (1) is provided with a bottom guard plate (5), the bottom of the bottom guard plate (5) is provided with a plurality of universal wheels (6), the front side of the box body (1) is provided with a front guard plate (7) whose lower end is hinged to the bottom guard plate (5), the rear side of the box body (1) is provided with a rear guard plate (8) whose lower end is hinged to the bottom guard plate (5), and the top of the box body (1) is provided with a top guard plate (9), the front side of the top guard plate (9) is hinged to the front guard plate (7), and the rear side of the top guard plate (9) is hinged to the rear guard plate (8); A first positioning assembly is provided between the front guard plate (7) and the top guard plate (9), the first positioning assembly comprising a first slide groove (10) located at the front end of the top guard plate (9), a second slide groove (11) located at the upper end of the front guard plate (7), and two first slide plates (12) respectively located at the front and rear sides of the front guard plate (7), and a first connecting plate (13) passing through the second slide groove (11) is provided between the two first slide plates (12); A second positioning assembly is provided between the top guard plate (9) and the rear guard plate (8), the second positioning assembly comprising a third slide groove (14) located at the rear end of the top guard plate (9), a fourth slide groove (15) located at the upper end of the rear guard plate (8), and two second slide plates (16) respectively located at the front and rear sides of the top guard plate (9), a second connecting plate (17) passing through the third slide groove (14) is provided between the two second slide plates (16); A detachable connecting mechanism is provided between the box body (1) and the front guard plate (7); The connecting mechanism comprises a first plug-in piece (18) located on the inner side of the front guard plate (7) and a second plug-in piece (19) located on the rear side of the box body (1), the upper end of the first plug-in piece (18) is fixed to the front guard plate (7), both ends of the second plug-in piece (19) are fixed to the box body (1), and a socket (20) that cooperates with the first plug-in piece (18) is formed between the second plug-in piece (19) and the box body (1).

2. The small integrated portable relay protection test teaching device according to claim 1 is characterized by: There are two first positioning components and two second positioning components.

3. The small integrated portable relay protection test teaching device according to claim 1 is characterized by: The first positioning component has two first sliding grooves (10) and two second sliding grooves (11), and the second positioning component has two third sliding grooves (14) and two fourth sliding grooves (15).

4. The small integrated portable relay protection test teaching device according to claim 3 is characterized by: The width of the first slide plate (12) is 1.5-2 times the distance between the two second slide grooves (11), and the width of the second slide plate (16) is 1.5-2 times the distance between the two third slide grooves (14).

5. The small integrated portable relay protection test teaching device according to claim 1 is characterized in that: The box body (1) is provided with side guard plates (21) on both the left and right sides, the bottom guard plate (5) and the rear guard plate (8) are fixed to the side guard plates (21), and a panel (22) located at the front side of the box body (1) is provided between the two side guard plates (21), the panel (22) is close to the bottom guard plate (5), and the front guard plate (7) is connected to the panel (22) by a lock.

6. The small integrated portable relay protection test teaching device according to claim 5 is characterized by: The box body (1) is provided with handle mechanisms on both the left and right sides and the top, and the top guard plate (9) and the side guard plate (21) are provided with first through holes (23) corresponding to the positions of the corresponding handle mechanisms.

7. The small integrated portable relay protection test teaching device according to claim 6 is characterized by: The handle mechanism comprises a second through hole (24) located on the side wall of the box body (1) and a mounting plate (25) located in the box body (1), the mounting plate (25) covers the second through hole (24), the mounting plate (25) is fixed to the box body (1), and a handle (26) located in the second through hole (24) is provided on the outside of the mounting plate (25), the handle (26) is U-shaped, both ends of the handle (26) are rotatably connected to the mounting plate (25), and the upper sides of both ends of the handle (26) are provided with a limit plate (27) fixed to the mounting plate (25).

8. The small integrated portable relay protection test teaching device according to claim 5 is characterized by: A pin (28) close to the front guard plate (7) is provided on the top surface of the side guard plate (21), and a notch (29) cooperating with the pin (28) is provided on the bottom surface of the top guard plate (9).

9. The method for using the small integrated portable relay protection test teaching device according to any one of claims 1 to 8, characterized in that: During teaching, the lock between the front guard plate (7) and the enclosure plate (22) is opened, the front guard plate (7) is flipped upward, the top guard plate (9) is flipped upward, so that the front guard plate (7), the top guard plate (9) and the rear guard plate (8) are in the same plane, the first positioning assembly and the second positioning assembly are moved downward, so that the front guard plate (7), the top guard plate (9) and the rear guard plate (8) are fixed in the same plane, the box body (1) is taken out, and the box body (1) is fixed to the front guard plate (7) through the connecting mechanism.

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