Duplex protection pressing plate with on-off self-checking function

Abstract

The utility model relates to the field of transformer substation relay protection, in particular to a duplex relay protection pressing plate with a state monitoring function. The main insertion column, the auxiliary insertion column and the self-checking insertion column are inserted into the corresponding main insertion hole, the corresponding auxiliary insertion hole and the corresponding state detection insertion hole respectively, and the light-emitting diode is lightened and emits light. The duplex pressing plate is pulled out, the division insertion column is inserted into the division insertion hole, and the light-emitting diode is extinguished; the duplex protection pressing plate identifies whether the protection pressing plate is in a switching-on or switching-off state according to whether the light-emitting diodes are lightened or not, so that the duplex protection pressing plate has a switching-on or switching-off self-checking function and is small in occupied space and easy to operate.

Description

Technical Field

[0001] The utility model relates to the field of substation relay protection, and particularly relates to a double - type relay protection pressure plate with a status monitoring function. Background Art

[0002] The outgoing pressure plates of generator - transformer units or substation relay protection act on circuit breaker tripping and the startup of other protection functions. In practical applications, due to the control circuit design or to meet the requirements of protection outlets, there are cases where double - type protection pressure plates are used. Currently, the double - type protection pressure plates are arranged in parallel in space by two separate pressure plates for parallel switching - on and off, and there is no self - checking function for switching - on and off. Their switching - on and off states need to be verified manually on - site, without an automatic monitoring function. There is a risk of incorrect switching - on and off of the pressure plates causing or expanding accidents, threatening the correct operation of relay protection. Content of the Utility Model

[0003] The technical problems of the utility model are as follows:

[0004] 1. The switching - on and off operation of the parallel double - type pressure plates is difficult and there are problems of incorrect switching - on and off;

[0005] 2. The self - checking function for incorrect switching - on and off of the parallel double - type pressure plates;

[0006] 3. The problem that the parallel double - type pressure plates occupy a large space.

[0007] The purpose of the utility model is to solve the above problems and provide a double - type protection pressure plate with a switching - on and off self - checking function. The technical solution is as follows:

[0008] A double - type protection pressure plate with a switching - on and off self - checking function includes a pressure - plate base and a pressure - plate connecting piece. The pressure - plate base is provided with a pair of main jacks, a pair of auxiliary jacks, a pair of status - detection jacks, a pair of off - position jacks and a rotating shaft fixed on the pressure - plate base; the pressure - plate connecting piece is provided with a pair of main plug posts, a pair of auxiliary plug posts, a pair of status - detection plug posts and a pair of off - position plug posts; a pair of main plug posts, a pair of auxiliary plug posts and a pair of status - detection plug posts are respectively connected and conducted with each other; the pressure - plate connecting piece is also provided with a first connecting piece between the main jacks, a second connecting piece between the auxiliary jacks and a third connecting piece between the status - detection jacks, and the first connecting piece, the second connecting piece and the third connecting piece are arranged in parallel; a light - emitting diode is arranged on the third connecting piece between the status - detection jacks; the pressure - plate connecting piece is rotatably connected to the rotating shaft.

[0009] Further, the bottoms of a pair of main plug posts are respectively connected to first wiring terminals; the bottoms of a pair of auxiliary plug posts are respectively connected to second wiring terminals; the bottoms of a pair of status - detection plug posts are respectively connected to third wiring terminals.

[0010] Further, the first connecting piece between the main jacks, the second connecting piece between the auxiliary jacks and the third connecting piece between the status - detection jacks are embedded and fixed in an insulating housing.

[0011] This design insulates the first connecting piece between the main jacks, the second connecting piece between the auxiliary jacks, and the third connecting piece between the status detection jacks from each other.

[0012] Preferably, when the pressure plate connecting piece is in the inserted state, the main plug post, the auxiliary plug post, and the status detection plug post are respectively inserted into the corresponding main jack, auxiliary jack, and status detection jack, and the light-emitting diode lights up. This design enables electrical maintenance personnel to identify that the protection pressure plate is in the inserted state through the lit light-emitting diode.

[0013] Preferably, when the pressure plate connecting piece is in the withdrawn state, the off-position plug post is inserted into the off-position jack, and the light-emitting diode goes out. This design enables electrical maintenance personnel to identify that the protection pressure plate is in the withdrawn state through the extinguished diode.

[0014] The above design realizes the self-check function of the protection pressure plate, eliminating the need for manual on-site verification of the input and withdrawal status of the protection pressure plate.

[0015] Preferably, the first connecting piece between the main jacks, the second connecting piece between the auxiliary jacks, and the third connecting piece between the status detection jacks are of the same length.

[0016] Furthermore, the light-emitting diode is connected in series with the third connecting piece between the status detection jacks. When the status detection plug post is inserted, the connecting piece between the status detection jacks conducts, and the light-emitting diode lights up.

[0017] Preferably, the terminal connected to the bottom of the main plug post is threadedly connected to a nut.

[0018] Compared with the prior art, the beneficial effects of the present utility model include:

[0019] 1) The present utility model provides a double-connected protection pressure plate with an input / withdrawal self-check function. The double-connected protection pressure plate identifies whether the protection pressure plate is in the inserted or withdrawn state through the lighting or extinguishing of the light-emitting diode, enabling electrical maintenance personnel to avoid incorrect input / withdrawal situations and realizing the input / withdrawal self-check function.

[0020] 2) Compared with common double-connected pressure plates, the double-connected protection pressure plate of the present utility model has simple input / withdrawal operations and occupies less space. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0022] Figure 1 is a perspective structure diagram of the double-connected protection pressure plate of the present utility model;

[0023] Figure 2 is a structure diagram of the double-connected pressure plate of the present utility model in the inserted state;

[0024] Figure 3Structural diagram of the dual - link pressure plate in the withdrawn state of the present utility model;

[0025] Figure 4 Structural diagram of the pressure plate connecting piece of the dual - link pressure plate of the present utility model;

[0026] Figure 5 Structural diagram of the first connecting piece, the second connecting piece and the third connecting piece of the dual - link pressure plate of the present utility model;

[0027] Reference numerals: 1 pressure plate base, 2 pressure plate connecting piece, 10 position - dividing hole, 11 main jack, 12 auxiliary jack, 13 state - detection jack, 21 main plug post, 22 auxiliary plug post, 23 state - detection plug post, 24 position - dividing plug post, 25 light - emitting diode, 26 rotating shaft, 27 insulating housing, 3 first wiring terminal, 4 second wiring terminal, 5 third wiring terminal, 6 first connecting piece, 7 second connecting piece, 8 third connecting piece, 28 nut. Detailed implementation manners

[0028] As Figure 1 shown, a dual - link protection pressure plate with an input - withdrawal self - inspection function includes a pressure plate base 1 and a pressure plate connecting piece 2. On the pressure plate base 1, there are a pair of main jacks 11, a pair of auxiliary jacks 12, a pair of state - detection jacks 13, a pair of position - dividing holes 10 and a rotating shaft 27 fixed on the pressure plate base 1; on the pressure plate connecting piece 2, there are a pair of main plug posts 21, a pair of auxiliary plug posts 22, a pair of state - detection plug posts 23 and a pair of position - dividing plug posts 24; between a pair of main plug posts 21, a pair of auxiliary plug posts 22 and a pair of state - detection plug posts 23, they are respectively connected and conduct with each other; on the pressure plate connecting piece 2, there are also a first connecting piece 6 between the main jacks 11, a second connecting piece 7 between the auxiliary jacks 12 and a third connecting piece 8 between the state - detection jacks 13; the first connecting piece 6, the second connecting piece 7 and the third connecting piece 8 are arranged in parallel; on the third connecting piece 8, there is a light - emitting diode 25; the pressure plate connecting piece 2 is rotatably connected to the rotating shaft 26.

[0029] The bottoms of a pair of main plug posts 21 are respectively connected to the first wiring terminal 3; the bottoms of a pair of auxiliary plug posts 22 are respectively connected to the second wiring terminal 4; the bottoms of a pair of auxiliary plug posts are respectively connected to the third wiring terminal 5.

[0030] The first connecting piece 6, the second connecting piece 7 and the third connecting piece 8 are all embedded and fixed in the insulating housing 27.

[0031] As Figure 2 shown, when the pressure plate connecting piece 2 is in the input state, the main plug post 21, the auxiliary plug post 22 and the state - detection plug post 23 are respectively inserted into the corresponding main jack 11, auxiliary jack 12 and state - detection jack 13, and the light - emitting diode 25 lights up.

[0032] As Figure 3 shown, when the pressure plate connecting piece 2 is in the withdrawn state, the position - dividing plug post 24 is inserted into the position - dividing hole 10, and the light - emitting diode 25 goes out.

[0033] As Figure 4 shown, the first connecting plate 6 between the main jacks 11, the second connecting plate 7 between the auxiliary jacks 12 and the third connecting plate 8 between the status detection jacks 13 have the same length.

[0034] As Figure 5 shown, when the light-emitting diode 25 and the third connecting plate 8 are inserted, the third connecting plate 8 conducts, the light-emitting diode 25 lights up, and it is recognized that the pressing plate is inserted normally.

[0035] The first terminal 3 is respectively threadedly connected to the nuts 28.

[0036] Working principle: When the pressing plate is inserted, the main plug post 21 and the auxiliary plug post 22 are respectively inserted into the corresponding main jack 11 and auxiliary jack 12, and the insertion / withdrawal self-checking plug post 23 is inserted into the status detection jack 13, so that the corresponding circuit of the third terminal 5 is conducted, and the low-voltage power supply of the corresponding circuit of the third terminal 5 is connected. At this time, the light-emitting diode 25 lights up, indicating that the pressing plate is successfully inserted; when the pressing plate is withdrawn, the pressing plate connecting piece 2 is pulled out, the pressing plate connecting piece 2 is rotated through the rotating shaft 26, and the off-position plug post 24 is inserted into the off-position jack 10. At this time, the corresponding circuit of the third status detection terminal 5 is disconnected, the light-emitting diode 25 goes out, and it is recognized that the connecting piece pressing plate 2 is successfully withdrawn.

Claims

1. A dual protection pressure plate with an input / output self-checking function, comprising a pressure plate base (1) and a pressure plate connecting piece (2), characterized in that, A pair of main jacks (11), a pair of auxiliary jacks (12), a pair of status detection jacks (13), a pair of position dividing jacks (10), and a rotating shaft (26) fixed to the pressure plate base (1) are provided on the pressure plate base (1); a pair of main plug posts (21), a pair of auxiliary plug posts (22), a pair of status detection plug posts (23), and a pair of position dividing plug posts (24) are provided on the pressure plate connecting piece (2); the pair of main plug posts (21), the pair of auxiliary plug posts (22), and the pair of status detection plug posts (23) are respectively connected and conducted with each other; a first connecting piece (6) between the main jacks (11), a second connecting piece (7) between the auxiliary jacks (12), and a third connecting piece (8) between the status detection jacks (13) are further provided on the pressure plate connecting piece (2); the first connecting piece (6), the second connecting piece (7), and the third connecting piece (8) are arranged in parallel; a light-emitting diode (25) is provided on the third connecting piece (8); the pressure plate connecting piece (2) is rotatably connected to the rotating shaft (26).

2. The dual protection pressure plate with input / output self-checking function according to claim 1, characterized in that, The bottoms of the pair of main plug posts (21) are respectively connected to the first terminal posts (3); the bottoms of the pair of auxiliary plug posts (22) are respectively connected to the second terminal posts (4); the bottoms of the pair of status detection plug posts (23) are respectively connected to the third terminal posts (5).

3. The dual protection pressure plate with input / output self-checking function according to claim 2, wherein, The first connecting piece (6), the second connecting piece (7), and the third connecting piece (8) are all embedded and fixed in the insulating housing (27).

4. A dual protection pressure plate with an input / output self-checking function according to claim 3, characterized in that, When the pressure plate connecting piece (2) is in the inserted state, the main plug post (21), the auxiliary plug post (22), and the status detection plug post (23) are respectively inserted into the corresponding main jack (11), auxiliary jack (12), and status detection jack (13), and the light-emitting diode (25) lights up and emits light.

5. A double-link protection pressure plate with an input / output self-checking function according to claim 4, characterized in that, When the pressure plate connecting piece (2) is in the withdrawn state, the position dividing plug post (24) is inserted into the position dividing jack (10), and the light-emitting diode (25) goes out.

6. The dual protection pressure plate with input / output self-checking function according to claim 3, characterized in that, The first connecting piece (6), the second connecting piece (7), and the third connecting piece (8) have the same length.

7. A double-link protection pressure plate with an input / output self-checking function according to claim 6, characterized in that, The light-emitting diode (25) is connected in series with the third connecting piece (8).

8. A double-link protection pressure plate with an insertion / withdrawal self-checking function according to claim 2, characterized in that The pair of first terminal posts (3) are respectively threadedly connected to nuts (28).

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