CN213741522U

CN213741522U - Automatic alarm control device for water flooded workshop of hydropower station

Info

Publication number: CN213741522U
Application number: CN202022341500.5U
Authority: CN
Inventors: 朱红波; 叶剑; 范小波
Original assignee: Sichuan Huaneng Kangding Hydropower Co Ltd
Current assignee: Sichuan Huaneng Kangding Hydropower Co Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-07-20
Anticipated expiration: 2030-10-20

Abstract

The utility model discloses an automatic alarm control device for a water logging factory building of a hydropower station, which relates to the alarm field of the hydropower factory building and comprises a first acquisition module, a second acquisition module, a third acquisition module, an emergency drainage pump, a PLC control box, an audible and visual alarm and a relay; the first acquisition module acquires a signal of a lower water level and transmits the signal to the PLC control box, and the PLC control box performs primary early warning to control the emergency drainage pump to be opened for drainage; when the water level exceeds the first acquisition module and water level signals are acquired by the second acquisition module and the third acquisition module which are used for acquiring the same position, the PLC control box performs secondary early warning to control the corresponding audible and visual alarm to perform alarm work; when the relay receives the signals of the equal water levels collected by the second collecting module and the third collecting module at any two positions, the relay performs three-level early warning and starts the first unit LCU and the second unit LCU to emergently stop after 5S delay, and performs a grading early warning function and corresponding drainage early warning measures accurately.

Description

Automatic alarm control device for water flooded workshop of hydropower station

Technical Field

The utility model relates to a power station water logging factory building warning field especially relates to a power station water logging factory building automatic alarm control device.

Background

According to the flood prevention rectification requirement, a water flooding factory building alarm device is additionally arranged in a factory building of a hydraulic power plant so as to give an alarm in time before a water flooding factory building accident occurs, an in-plant drainage pump is started, the electromechanical devices of the whole plant are prevented from being damaged, the water supply quantity of the hydraulic power plant is large in each year flood season, the water level of a reservoir can be rapidly increased, the flood prevention task is heavy, the safety of a power grid is guaranteed to meet the peak summer, and the life and property safety of the people in the lower reaches are guaranteed. If the alarm system of the flood workshop is not installed, the alarm can not be realized at the early stage of the flood workshop accident, the personal equipment safety is ensured, and the requirements of security evaluation, correction and improvement of national network companies and flood prevention, correction and improvement of hydraulic power plants are not met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the automatic alarm control device for the water logging plant of the hydropower station is designed.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

power station water logging factory building automatic alarm control device includes:

the first acquisition module is used for acquiring a water level signal of a seepage water collecting well in a hydropower plant;

three second acquisition modules; the three second acquisition modules are respectively used for acquiring water level signals of a ball valve oil pressure device oil leakage tank of the first unit LCU, a ball valve oil pressure device oil leakage tank of the second unit LCU and a water level signal of a water leakage collecting well mouth, and the water level signals acquired by the three second acquisition modules are the same;

three third acquisition modules; the three third acquisition modules are respectively used for acquiring water level signals of a ball valve oil pressure device oil leakage tank of the first unit LCU, a ball valve oil pressure device oil leakage tank of the second unit LCU and a water level signal of a water leakage collecting well mouth, and the water level signals acquired by the three third acquisition modules are the same; the water level signals collected by the first collection module, the second collection module and the third collection module are sequentially increased;

an emergency draining pump;

a PLC control box; the signal input end of the PLC control box is respectively connected with the signal output ends of the first acquisition module, the three second acquisition modules and the three third acquisition modules, and the signal output end of the PLC control box is connected with the signal input end of the emergency drainage pump;

three audible and visual alarms; three audible-visual annunciators are installed respectively in ball valve layer, hydraulic turbine layer, generator layer, and three audible-visual annunciators are used for the warning suggestion on ball valve layer, hydraulic turbine layer, generator layer respectively, and PLC's signal output part is connected with three audible-visual annunciator's signal input part respectively.

Furthermore, the automatic alarm control device for the hydropower station water flooded workshop further comprises a relay, the signal input end of the relay is connected with the signal output ends of the three third acquisition modules respectively, the signal output end of the relay is connected with the signal input ends of the start-stop switches of the first unit LCU and the second unit LCU respectively, and when the relay receives signals of the two third acquisition modules, the relay outputs control signals to the start-stop switches of the first unit LCU and the second unit LCU to stop.

Furthermore, the first acquisition module is a float switch, and the second acquisition module and the third acquisition module are both liquid level float switches.

The beneficial effects of the utility model reside in that: the first acquisition module acquires a signal of a lower water level and transmits the signal to the PLC control box, and the PLC control box performs primary early warning to control the emergency drainage pump to be opened for drainage work; when the water level exceeds the first acquisition module and water level signals are acquired by the second acquisition module and the third acquisition module at the same position, the water level signals are transmitted to the PLC control box, and the PLC control box performs secondary early warning to control the corresponding audible and visual alarm to perform alarm work; when the relay receives the water level signals collected by the second collecting module and the third collecting module at any two positions, the relay performs three-level early warning, starts the first unit LCU and the second unit LCU after S delay and emergently stops, performs a grading early warning function, and accurately performs corresponding drainage early warning measures so as to achieve a better flooded workshop protection effect.

Drawings

FIG. 1 is a schematic structural diagram of the automatic alarm control device for a water flooded workshop of a hydropower station;

FIG. 2 is a control schematic diagram of a PLC control box in the automatic alarm control device of the utility model hydropower station water flooded workshop;

FIG. 3 is a control schematic diagram of a first unit LCU start-stop switch in the utility model automatic alarm control device for a hydropower station water flooded workshop;

FIG. 4 is a control schematic diagram of a second unit LCU start-stop switch in the utility model automatic alarm control device for a hydropower station water flooded workshop;

FIG. 5 is a schematic diagram of the flow of starting and stopping the machine after the alarm of the first unit LCU and the second unit LCU in the utility model automatic alarm control device for the water flooded workshop of the hydropower station is delayed;

fig. 6 is a schematic diagram of a backup protection circuit of the first unit LCU and the second unit LCU in the automatic alarm control device for the flooded workshop of the hydropower station of the utility model;

wherein corresponding reference numerals are:

1-a first unit LCU, 2-a second unit LCU, 3-a seepage water collecting well mouth, 4-a third acquisition module, 5-a second acquisition module, 6-a first acquisition module and 7-an emergency drainage pump.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following describes in detail embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1 and 2, the automatic alarm control device for the flooded workshop of the hydropower station comprises:

the first acquisition module 6 is used for acquiring a water level signal of a seepage water collecting well in a hydropower plant;

three second acquisition modules 5; the three second acquisition modules 5 are respectively used for acquiring water level signals of a ball valve oil pressure device oil leakage tank of the first unit LCU1, a ball valve oil pressure device oil leakage tank of the second unit LCU2 and a water level signal of a water leakage collecting well mouth 3, and the water level signals acquired by the three second acquisition modules 5 are the same;

three third acquisition modules 4; the three third acquisition modules 4 are respectively used for acquiring water level signals of a ball valve oil pressure device oil leakage tank of the first unit LCU1, a ball valve oil pressure device oil leakage tank of the second unit LCU2 and a water level signal of a water leakage collecting well mouth 3, and the water level signals acquired by the three third acquisition modules 4 are the same; the water level signals collected by the first collection module 6, the second collection module 5 and the third collection module 4 are sequentially increased;

an emergency drain pump 7;

a PLC control box; the signal input end of the PLC control box is respectively connected with the signal output ends of the first acquisition module 6, the three second acquisition modules 5 and the three third acquisition modules 4, and the signal output end of the PLC control box is connected with the signal input end of the emergency drainage pump 7;

As shown in fig. 3 and 4, the automatic alarm control device for the water flooded workshop of the hydropower station further comprises a relay, a signal input end of the relay is connected with signal output ends of the three third acquisition modules 4, a signal output end of the relay is connected with signal input ends of start-stop switches of the first unit LCU1 and the second unit LCU2, and when the relay receives signals of the two third acquisition modules 4, the relay outputs control signals to start-stop switches of the first unit LCU1 and the second unit LCU2 to stop.

The first acquisition module 6 is a float switch, and the second acquisition module 5 and the third acquisition module 4 are both liquid level float switches.

The utility model discloses power station water logging factory building autoalarm control device's theory of operation as follows:

as shown in fig. 1, 2, 3, 4, 5 and 6, a signal of a lower water level is acquired by a first acquisition module 6 and transmitted to a PLC control box, and the PLC control box performs primary early warning control to open an emergency drain pump 7 for draining; when the water level exceeds the first acquisition module 6 and water level signals are acquired by the second acquisition module 5 and the third acquisition module 4 which are used for acquiring the same position, the water level signals are transmitted to the PLC control box, and the PLC control box performs secondary early warning to control the corresponding audible and visual alarm to perform alarm work; when the relay receives the signals of the equal water levels collected by the second collection module 5 and the third collection module 4 at any two positions, the relay performs three-stage early warning and starts the first unit LCU1 and the second unit LCU2 to perform emergency shutdown after 5S delay, and performs a grading early warning function, and corresponding drainage early warning measures are accurately performed to achieve a better water flooded workshop protection effect.

The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.

Claims

1. Power station water logging factory building autoalarm controlling means, its characterized in that includes:

the first acquisition module is used for acquiring a water level signal of a seepage and water collection well in a factory building;

an emergency draining pump;

2. The automatic alarm control device for the hydropower station flooding plant of claim 1, wherein the automatic alarm control device for the hydropower station flooding plant further comprises a relay, signal input ends of the relay are respectively connected with signal output ends of the three third acquisition modules, signal output ends of the relay are respectively connected with signal input ends of start-stop switches of the first unit LCU and the second unit LCU, and when the relay receives signals of two of the third acquisition modules, the relay outputs a control signal to the start-stop switches of the first unit LCU and the second unit LCU to stop.

3. The automatic alarm control device for the flooded buildings of the hydropower station according to claim 1 or 2, wherein the first collection module is a float switch, and the second collection module and the third collection module are both liquid level float switches.