CN213192261U

CN213192261U - Main transformer fire control host with grouping automatic manual starting device

Info

Publication number: CN213192261U
Application number: CN202021824400.1U
Authority: CN
Inventors: 徐炳达; 余峰
Original assignee: Wuhan Anyuan Fire Safety Equipment Co ltd
Current assignee: Hubei Anyuan Construction Group Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-05-14
Anticipated expiration: 2030-08-27

Abstract

The utility model relates to a fire control field specifically is a main fire control main control system who divides into groups automatic manual starting drive, including a plurality of main transformer and a fire control main control system, be provided with one set at least independent extinguishing device on every main transformer, still include manual automatic switching box, be provided with the change over switch of single extinguishing device automatic state of a plurality of independent control and manual state on the manual automatic switching box, single extinguishing device is controlled its start-up by the fire control main control system under automatic state, is controlled its start-up by manual control under manual state. The utility model discloses a change over switch on the manual automatic change-over box opens the automatic status and the manual state of the extinguishing device that the adjustment corresponds, and when the extinguishing device of one of them main transformer was in manual state, other extinguishing device kept automatic state, and not only can not touch start extinguishing device because of the maintenance mistake like this, can not influence other extinguishing device's automatic fire extinguishing yet.

Description

Main transformer fire control host with grouping automatic manual starting device

Technical Field

The utility model relates to a fire control field specifically is a main fire control host computer that becomes of automatic manual starting drive is divided into groups in area.

Background

The fire-fighting foam fire-extinguishing system of the national grid 500KV transformer substation is characterized in that two or more groups of transformers share one controller (fire-fighting host), each phase of each main transformer is in an automatic state after the fire-fighting host is placed in an automatic position during normal work at ordinary times, and the fire-extinguishing systems of the plurality of groups of transformers can only be in an automatic state or a manual state at the same time. But the transformer needs to have a power failure to overhaul in groups after working for a period of time, if all the transformers are turned into manual states during overhaul, the automatic fire extinguishing functions of other transformers can be influenced, and the manual fire extinguishing operation is inconvenient. If the automatic state is still kept during maintenance, a fire alarm signal can be triggered to malfunction the foam fire extinguishing system. Therefore, a main transformer fire control host with a grouping automatic manual starting device is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take automatic manual starting drive's of grouping owner to become fire control main control system, through an arbitrary extinguishing device's of manual automatic change-over case independent control automatic status and manual state, solved current transformer fire extinguishing system, trigger the fire alarm signal easily when partial transformer overhauls, influence other transformer automatic fire extinguishing's problem.

In order to achieve the above object, the utility model provides a following technical scheme: the main transformer fire control host machine comprises a plurality of main transformers and a fire control host machine, wherein each main transformer is provided with at least one set of independent fire extinguishing device, the main transformer fire control host machine further comprises a manual automatic conversion box, the manual automatic conversion box is provided with a plurality of switching switches for independently controlling the automatic state and the manual state of a single fire extinguishing device, the single fire extinguishing device is controlled by the fire control host machine to be started in the automatic state, and the single fire extinguishing device is controlled by the manual control host machine to be started in the manual state.

Preferably, the main transformer is provided with a sensor for detecting fire and a three-side switch capable of being automatically disconnected, and the fire control host starts a fire extinguishing device corresponding to the main transformer when receiving an automatic state signal of a change-over switch, a sensor action signal and a three-side switch disconnection signal of the same transformer.

Preferably, the number of the sensors on the main transformer is two, and the fire control host does not start the fire extinguishing device when receiving an action signal of one group of the sensors.

Preferably, when the main transformer is a three-phase transformer, each phase is provided with a set of sensors.

Preferably, the sensor is a temperature sensing cable.

Preferably, the fire extinguishing device comprises a foam tank filled with fire extinguishing foam and a nitrogen cylinder for pressurizing the foam tank, an electromagnetic valve is arranged at an outlet of the foam tank corresponding to each phase of the main transformer, and the nitrogen cylinder is provided with an electromagnetic valve for controlling the opening and closing of the nitrogen cylinder.

Compared with the prior art, the beneficial effects of the utility model are as follows:

by arranging the manual automatic conversion box, the automatic state and the manual state of the corresponding fire extinguishing device are adjusted by opening a switch on the manual automatic conversion box, when the fire extinguishing device of one main transformer is in a manual state, the fire extinguishing device corresponding to the main transformer is not started when the fire control host receives a sensor action signal and a three-side switch disconnection signal of the main transformer at the same time, when the fire extinguishing device of the main transformer is in an automatic state, the fire extinguishing device corresponding to the main transformer is started to extinguish fire when the fire control host receives the sensor action signal and the three-side switch disconnection signal of the main transformer at the same time, and the fire extinguishing device of the main transformer in an overhaul state is adjusted to be in a manual state during overhaul, other extinguishing device keep automatic state, so not only can not touch start extinguishing device because of overhauing by mistake, can not influence other extinguishing device's automatic fire extinguishing yet.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the manual/automatic switching box of the present invention;

fig. 3 is a logic diagram of the present invention.

In the figure: 1. a main transformer; 2. a fire control host; 3. a manual automatic transfer box; 4. a sensor; 5. a fire extinguishing device; 6. a three-side switch; 7. and (6) switching a switch.

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. 1-3, a main transformer fire-fighting control host with grouping automatic manual starting device comprises a plurality of main transformers 1 and a fire-fighting control host 2, each main transformer 1 is provided with at least one set of independent fire-extinguishing device 5, and further comprises a manual automatic switching box 3, the manual automatic switching box 3 is provided with a plurality of switching switches 7 for independently controlling the automatic state and the manual state of a single fire-extinguishing device 5, the single fire-extinguishing device 5 is controlled by the fire-fighting control host 2 to be started in the automatic state, and is controlled by a human to be started in the manual state.

The main transformer 1 is provided with a sensor 4 for detecting fire and a three-side switch 6 which can be automatically disconnected, and the fire control host machine 2 starts a fire extinguishing device 5 corresponding to the main transformer 1 when receiving an automatic state signal of a change-over switch 7, an action signal of the sensor 4 and a disconnection signal of the three-side switch 6 of the same transformer at the same time. The three-side switch 6 position signals of each group of main transformer 1 confirm that the switch position is in the off state, and then the action condition is regarded as the action condition, namely the main transformer 1 is determined to be powered off.

The three-side switch 6 is a commonly used part in the transformer, when the transformer body has a fault and differential protection acts, the three-side switch 6 is switched off, so that the fault transformer is isolated from the system, the system is not influenced, and the transformer is protected and prevented from being damaged. Normally, the power supply is used for supplying power to the transformer, performing loop closing operation of different voltage levels, protecting external faults and the like.

The number of the sensors 4 on the main transformer 1 is two (two sets are for preventing false alarm, and two sets of and gates are regarded as action conditions), and the fire control main machine 2 does not start the fire extinguishing device 5 when receiving the action signal of one set of the sensors 4. When the main transformer 1 is a three-phase transformer, each phase is provided with a set of sensors 4. The sensor 4 is a temperature sensing cable. When the temperature sensing cable detects that the temperature reaches 105 ℃, an alarm signal is sent out.

The fire extinguishing device 5 comprises a foam tank filled with fire extinguishing foam and a nitrogen cylinder for pressurizing the foam tank, wherein an outlet of the foam tank is provided with an electromagnetic valve corresponding to each phase of the main transformer 1, and the nitrogen cylinder is provided with an electromagnetic valve for controlling the opening and closing of the nitrogen cylinder. The electromagnetic valve (selection valve) of each phase of the outlet of the foam tank, the electromagnetic valve for driving the nitrogen gas cylinder and the nitrogen gas cylinder are started, so that the nitrogen gas of the nitrogen gas cylinder group is rapidly flushed into the foam tank to pressurize the foam in the tank so as to be sprayed to the on-site transformer through a pipeline.

Because manual automatic transfer box 3 sets up change over switch 7 for every group owner becomes, passes to fire control main control system 2 with change over switch 7 manual automatic status through the module. Meanwhile, the fire extinguishing device 5 can be started only by meeting the requirements of two groups of temperature sensing cable alarm signals of the same phase of the same main transformer 1, the action of the three-side switch 6 on the main transformer 1 and the automatic state signal of the change-over switch 7. Namely, the change-over switch for overhauling the main transformer 1 is arranged at a manual position during overhauling, so that the overhauled main transformer 1 always has a starting condition without misoperation, and the automatic state of the normally working main transformer 1 is ensured. The manual automatic switching box 3 is installed on an appropriate wall near the fire fighting control main body 2.

When a fire disaster occurs to a certain phase of a certain main transformer 1, two groups of temperature sensing cable alarm signals of the phase are transmitted to the fire control host 2, meanwhile, three-side switches 6 of the main transformer 1 automatically open the fire control host 2, and the host automatically starts an electromagnetic valve of a firing phase and drives an electromagnetic valve of a nitrogen cylinder after receiving the signals when being placed in an automatic state, so that foam is sprayed to the main transformer 1 of the firing phase through a pipeline.

When a certain phase of a certain main transformer 1 is overhauled, the fire extinguishing device 5 is adjusted to be in a manual state, and other fire extinguishing devices 5 are kept in an automatic state. Two groups of temperature sensing cable alarm signals of the phase are transmitted to the fire control host 2 due to maintenance, meanwhile, three-side switches 6 of the main transformer 1 automatically open the brake signals and transmit the signals to the fire control host 2, and the host is placed in a manual state and does not start the electromagnetic valve of the phase after receiving the signals, so that misoperation is avoided.

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 main fire control main engine that automatic manual starting drive is grouped in area, includes a plurality of main transformer (1) and a fire control main engine (2), is provided with one set of independent extinguishing device (5) of at least on every main transformer (1), its characterized in that: the fire extinguishing system is characterized by further comprising a manual-automatic conversion box (3), wherein a plurality of switching switches (7) for independently controlling the automatic state and the manual state of a single fire extinguishing device (5) are arranged on the manual-automatic conversion box (3), the single fire extinguishing device (5) is controlled to be started by the fire control host (2) in the automatic state, and is manually controlled to be started in the manual state.

2. The main transformer fire-fighting control host with the grouping automatic manual starting device according to claim 1, characterized in that: the fire-fighting control system is characterized in that a sensor (4) for detecting fire and a three-side switch (6) capable of being automatically disconnected are arranged on the main transformer (1), and the fire-fighting control host (2) starts a fire-fighting device (5) corresponding to the main transformer (1) when receiving an automatic state signal of a change-over switch (7), an action signal of the sensor (4) and a disconnection signal of the three-side switch (6) of the same transformer.

3. The main transformer fire-fighting control host with the grouping automatic manual starting device according to claim 2, characterized in that: the number of the sensors (4) on the main transformer (1) is two, and the fire-fighting control host (2) does not start the fire extinguishing device (5) when receiving the action signal of one group of the sensors (4).

4. The main transformer fire-fighting control host with the grouping automatic manual starting device according to claim 3, characterized in that: when the main transformer (1) is a three-phase transformer, each phase is provided with a set of sensors (4).

5. The main transformer fire-fighting control host with the grouping automatic manual starting device according to claim 4, characterized in that: the sensor (4) adopts a temperature sensing cable.

6. The main transformer fire-fighting control host with the grouping automatic manual starting device according to claim 4, characterized in that: the fire extinguishing device (5) comprises a foam tank filled with fire extinguishing foam and a nitrogen cylinder used for pressurizing the foam tank, an electromagnetic valve is arranged at each phase of an outlet of the foam tank corresponding to the main transformer (1), and the nitrogen cylinder is provided with an electromagnetic valve for controlling the opening and closing of the nitrogen cylinder.