CN216870689U

CN216870689U - Pressing plate annunciator

Info

Publication number: CN216870689U
Application number: CN202123080316.0U
Authority: CN
Inventors: 赵社强
Original assignee: Lijiaxia Power Generation Branch Of Qinghai Upper Yellow River Hydropower Development Co ltd; Huanghe Hydropower Development Co Ltd
Current assignee: Lijiaxia Power Generation Branch Of Qinghai Upper Yellow River Hydropower Development Co ltd; Huanghe Hydropower Development Co Ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-07-01
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses a pressing plate annunciator, which comprises a base, wherein a pressing plate connected with a shaft and a first electrode and a second electrode which are used for connecting a relay protection device circuit are arranged on the base; when the first electrode and the second electrode are connected with each other through the pressing plate, the third electrode and the fourth electrode are in a disconnected state, and when the third electrode and the fourth electrode are connected with each other through the pressing plate, the first electrode and the second electrode are in a disconnected state. The pressing plate annunciator can monitor the position of the pressing plate in a function quitting state.

Description

Pressing plate annunciator

Technical Field

The utility model relates to the technical field of power plant safety systems, in particular to a pressure plate annunciator with a self-monitoring function.

Background

At present, the accident caused by the switching-on and switching-off errors of a pressing plate annunciator for a relay protection device accounts for a larger proportion by analyzing the accident of a combing power system. The main problem is that when the pressing plate annunciator is in a function exit state (that is, the circuit of the relay protection device is in an open state), a situation of misconnection easily occurs between the electrode of the pressing plate and the electrode of the relay protection device. However, this is currently not easy to detect early due to the lack of monitoring means for the platen.

SUMMERY OF THE UTILITY MODEL

In view of the defects in the prior art, the utility model provides a pressing plate annunciator, which comprises a base, wherein a pressing plate connected with a shaft and a first electrode and a second electrode which are used for connecting a relay protection device circuit are arranged on the base, a third electrode and a fourth electrode are also arranged on the base, the third electrode and the fourth electrode are respectively connected with a monitoring circuit, the monitoring circuit comprises a monitoring device used for monitoring the pressing plate, and the connection or disconnection between the first electrode and the second electrode as well as between the third electrode and the fourth electrode is realized through the pressing plate; when the first electrode and the second electrode are connected with each other through the pressing plate, the third electrode and the fourth electrode are in a disconnected state, and when the third electrode and the fourth electrode are connected with each other through the pressing plate, the first electrode and the second electrode are in a disconnected state.

Preferably, a straight line between the first electrode and the second electrode and a straight line between the third electrode and the fourth electrode intersect each other.

Preferably, a straight line between the first electrode and the second electrode and a straight line between the third electrode and the fourth electrode are perpendicular to each other.

Preferably, the monitoring device is a monitoring camera.

When the pressing plate annunciator provided by the utility model is adopted, the pressing plate of the pressing plate annunciator is connected with the first electrode and the second electrode under the state of function input, so that a relay protection device can be started; when the pressing plate annunciator is in a function quitting state, the pressing plate disconnects the first electrode and the second electrode and is connected with the third electrode and the fourth electrode, so that a monitoring circuit is in a closed state, a monitoring device is started to monitor the pressing plate, and the position of the pressing plate in the function quitting state can be effectively monitored.

Drawings

FIG. 1 is a schematic diagram of a platen annunciator in accordance with an embodiment of the present invention;

FIG. 2 is a state diagram of the functional inputs of the clamp plate annunciator of the present embodiment;

FIG. 3 is a state diagram of the functional exit of the platen annunciator of the present embodiment.

Description of reference numerals:

1-base, 2-pressing plate, 3 a-third electrode, 3 b-fourth electrode, A-monitoring circuit, 4 a-monitoring device, 4 b-power supply, 5 a-relay protection device, 5 b-power supply, 6 a-first electrode and 6 b-second electrode.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the utility model shown in the drawings and described in accordance with the drawings are exemplary only, and the utility model is not limited to these embodiments.

It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.

In view of the problems of the prior art mentioned in the background, the present invention provides the following embodiments.

As shown in fig. 1, the present embodiment provides a pressure plate annunciator. The pressing plate annunciator comprises a base 1, wherein a pressing plate 2 connected with a shaft and a first electrode and a second electrode which are used for connecting a relay protection device circuit are arranged on the base 1 (the first electrode and the second electrode are not shown in figure 1 because the pressing plate covers the first electrode and the second electrode). The base 1 is further provided with a third electrode 3a and a fourth electrode 3b, the third electrode 3a and the fourth electrode 3b are respectively connected with a monitoring circuit A, and the monitoring circuit A comprises a monitoring device 4a and a power supply 4b which are used for monitoring the pressing plate 2. In the present embodiment, the first electrode and the second electrode, and the third electrode 3a and the fourth electrode 3b are connected or disconnected with each other by the pressing plate 2. When the first electrode and the second electrode are connected with each other through the pressing plate 2, the third electrode 3a and the fourth electrode 3b are in a disconnected state, and when the third electrode 3a and the fourth electrode 3b are connected with each other through the pressing plate 2, the first electrode and the second electrode are in a disconnected state.

As shown in fig. 2 and 3, when the pressing plate annunciator of the present embodiment is employed,

in the state where the function is put into operation, the first electrode and the second electrode (as shown in fig. 2) are connected to the pressure plate 2, and the relay protection device 5a can be activated. In the state that the pressing plate annunciator is in the function quitting state (as shown in fig. 3), the pressing plate 2 disconnects the first electrode 6a and the second electrode 6b, and is connected with the third electrode and the fourth electrode at the same time, so that the monitoring circuit a is in the closed state, the monitoring device 4a is started to monitor the pressing plate 2, the position of the pressing plate 2 in the function quitting state can be effectively monitored, and some accidents can be timely responded.

Preferably, in the structure of the pressing plate annunciator of the present embodiment, as shown in fig. 1, a straight line between the first electrode 6a and the second electrode 6b and a straight line between the third electrode 3a and the fourth electrode 3b intersect with each other.

Alternatively, a straight line between the first electrode 6a and the second electrode 6b and a straight line between the third electrode 3a and the fourth electrode 3b may be perpendicular to each other.

Preferably, in the pressing plate annunciator structure of the present embodiment, the monitoring device 4a is a monitoring camera.

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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A pressing plate annunciator comprises a base, wherein a pressing plate connected with a shaft and a first electrode and a second electrode which are used for connecting a relay protection device circuit are arranged on the base; when the first electrode and the second electrode are connected with each other through the pressing plate, the third electrode and the fourth electrode are in a disconnected state, and when the third electrode and the fourth electrode are connected with each other through the pressing plate, the first electrode and the second electrode are in a disconnected state.

2. The platen signaler of claim 1, wherein a line between the first electrode and the second electrode and a line between the third electrode and the fourth electrode intersect each other.

3. The platen signaler of claim 2, wherein a line between the first electrode and the second electrode and a line between the third electrode and the fourth electrode are perpendicular to each other.

4. A platen annunciator as claimed in any one of claims 1 to 3 wherein the monitoring means is a monitoring camera.