CN203915873U - Large-scale outdoor transformer regional fire integrated fire control device - Google Patents

Abstract

The utility model is large-scale outdoor transformer regional fire integrated fire control device.The utility model object is to provide reliable spray control device for the condition of a fire.Comprise: transformer regional fire detecting temperature cable, temperature cable signal are accepted module, fire alarm main frame, drench valve and triggered and accept module, tranformer protection rack, logic processing circuit, switching signal modular converter; Transformer regional fire detecting temperature cable is arranged at monitored transformer region, collecting temperature abnormal signal; Tranformer protection rack comprises transformer differential protection signal output apparatus, Transformer Heavy Gas guard signal output circuit.This device has outside the fundamental characteristics such as timely, accurate, reliable, also has and installs and uses the economic performance that cost is low.

Description

Large-scale outdoor transformer regional fire integrated fire control device

Technical field

The utility model belongs to fire in power plant protector, is specifically related to large-scale outdoor transformer regional fire integrated fire control device.

Background technology

At present, fire detector major way has: the types such as ion smoke detector, photoelectric smoke correlative detector, infrared flame detector, temperature rise rate detector, inherently safe type smoke detector.

According to all kinds of detector performance structural properties and suitable environment, for large-scale open-air atmosphere transformer regional fire, to survey and mostly adopt temperature rise rate detector, namely what is often called temperature sensing cable, is called for short warm cable.

The interlock mode of its detection and fire-fighting fire extinguishing mostly is temperature sensing cable signalizing activity can trigger transformer region fire-fighting drench valve action spray.But temperature sensing cable is outdoor laying mostly in main transformer region, because wind blows the natural environment influence such as drench with rain, in use often there will be warm cable detector alarm linkage drench valve spray in the situation of not breaking out of fire, produce wrong report, maloperation situation.To equipment, operation brings certain influence, serious meeting to cause tranformer protection action to this mistake spray, brings impact to the safety and efficiently operation of power plant.

For above-mentioned situation, be necessary to work out the control device of detection more accurately and fire-fighting link.

Utility model content

The purpose of this utility model is to address the problem: at present fire detector technology cannot provide and under a kind of environmental condition in the open, find in time, effectively, accurately the detection method of the condition of a fire;

The utility model object is to provide reliable spray control device for the condition of a fire.This device has outside the fundamental characteristics such as timely, accurate, reliable, also has and installs and uses the economic performance that cost is low.

Technical scheme: a kind of large-scale outdoor transformer regional fire integrated fire control device, wherein: comprising: transformer regional fire detecting temperature cable, temperature cable signal are accepted module, fire alarm main frame, drench valve and triggered and accept module, tranformer protection rack, logic processing circuit, switching signal modular converter;

Wherein, transformer regional fire detecting temperature cable is arranged at monitored transformer region, collecting temperature abnormal signal, its output is connected in temperature cable signal and accepts module, the output that temperature cable signal is accepted module is connected in fire alarm main frame, and the collection temperature anomaly signal receiving is sent to fire alarm main frame, and temperature cable signal is accepted module and is output as switching value, logical truth represents excess Temperature, detects fire;

Tranformer protection rack comprises transformer differential protection signal output apparatus, Transformer Heavy Gas guard signal output circuit, and output is switching value, and logical truth indication transformer is abnormal, need to protect;

Logic processing circuit comprises logical "or", the output that comprises transformer differential protection signal output apparatus, Transformer Heavy Gas guard signal output circuit for tranformer protection rack, carry out the computing of logical "or", the output of logic processing circuit is connected in fire alarm main frame;

Fire alarm main frame comprises logical “and” circuit, for temperature cable signal, accepts the output of module and logic "and" operation is carried out in the output of logic processing circuit, and then logical “and” circuit output is connected to drench valve and triggers and accept module;

Drench valve triggers accepts the output that module is accepted fire alarm main frame, controls the action of drench valve, and logical truth represents to start drench valve.

A kind of large-scale outdoor transformer regional fire integrated fire control device as above, wherein:

Tranformer protection rack comprises transformer differential protection signal output apparatus, Transformer Heavy Gas guard signal output circuit is become by the passive contact switches set of often opening, and in closure, means and need to protect;

The passive contact switch of the generation type of the logical "or" circuit comprising in logic processing circuit for tranformer protection rack is comprised to transformer differential protection signal output apparatus, Transformer Heavy Gas guard signal output circuit; connect together, make it form the output passive switch contact signal of "or" logic.

The beneficial effects of the utility model are: supplement existing fire detector kind and lack the shortcoming of effective applicability and detection reliability in the open in environment; Authenticity multiple check that can be to transformer regional fire signal; The multiple malfunction of evading under original linking fire single signal confirmation mode is done; Take into account simultaneously and evade the generation that multiple signal draws the too drastic situation of being failure to actuate of fire-fighting link; Open-air area transformer fire is surveyed and provided multiple effective fire dangerous situation to confirm mode; Effectively guaranteed the safe and reliable operation of outdoor transformer regional fire fire-fighting; Saving equipment and artificial installation cost; Meet the safe operation requirement of power-generating enterprise.

This kind of method, after the related transformer such as the second nuclear power plant of center nuclear power operational management Co., Ltd are implemented, do not occur that fire-fighting sprayed phenomenon by mistake again.

Accompanying drawing explanation

Fig. 1 is this utility model fundamental diagram.

Logic chart when Fig. 2 is successfully used in nuclear power plant for this utility model.

Fig. 3 is that tranformer protection rack guard signal is exported passive contact and connects schematic diagram.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model is described further.

Before the utility model, existing fire fire-fighting link mode is: warm cable actuating signal is sent and triggered drench valve action spray, on this basis, change to: at tranformer protection rack, by a secondary passive contact switching signal (normally opened contact) of the differential protection signal output of transformer body guard signal, export passive contact switching signal (normally opened contact) with heavily protection actuating signal of a pair, and connect together, make it form the output passive switch contact signal of a secondary "or" logic, then by this signal, after processing by special-purpose fire alarm system signal processing module, become an acceptable fire alarm of fire alarm main frame, introduce former fire fire-fighting main frame, with original warm cable action fire alarm signal again configuration, make it to form " with " logic, get " with " after logic alarm signal as the triggering signal that triggers drench valve action, go to trigger the spray action of drench valve.

Selection transformer body differential protection and heavily protection are as follows as the concrete reason of interlock signal:

The general three-phase of large-scale outdoor transformer is that region separation is opened; consider that the transformer situation of catching fire goes out present condition; because transformer catches fire; first can cause that transformer temperature raises; and temperature can cause transformer operation irregularity while being increased to certain value; this operation irregularity can embody and pass through the abnormal of transformer transmission current; the running current such as three-phase current unbalance changes and causes and press protection; arranging of differential protection is exactly mainly to evade the fault that curent change causes and the guard signal arranging, and it has high agility and prediction performance.Transformer oil temperature rise when introducing heavily the reason of protection signal and be transformer and catching fire; can produce a large amount of methane gas; Buchholz relay action when the time comes; after transformer oil temperature rise, internal pressure raises; transformer oil sprays pressure release by safety valve, and this large amount of methane gas and the high temperature oil ejecting may cause fire fast.The original intention of introducing these signals is the accuracy that increases detection and interlock; be mainly used to confirm after on-the-spot temperature cable detector action drench valve whether because of scene truly have the condition of a fire accurately, reliable spray; therefore two guard signals that we get transformer are "or" logic, then get with the fire temperature cable detector signal of transformer " with " logic.That signal regardless of tranformer protection in reality occurs; first represent that transformer body is in abnormal working position; when occurring, abnormal state has again a lot of uncertain factors, for fear of when the time comes because uncertain factor causes the do not satisfy condition generation of the too drastic situation that do not spray of drench valve.Therefore tranformer protection signal do not get " with " logic, and select to use "or" logic, as overriding concern.

In specific implementation process; as shown in Figure 1; first by type fire disaster heat sensitive cable around the outdoor transformer needing protection; according to warm cable, lay relevant Specific construction technology and will just carry out laying installation, general 3-5 circle not etc., can specifically not considered according to the big or small volume of transformer of difference; then by warm cable access signal conversion module; carry out signal conversion, make signal be transformed into the acceptable address signal mode of fire fire-fighting main frame, and this module output is introduced to fire fire-fighting main frame reception signal end by wire.

As shown in Figure 3; in tranformer protection rack; by a secondary passive signal output contact of a secondary passive signal output contact of transformer differential protection and Transformer Heavy Gas protection; with wire, carry out splice connection; become the passive normally opened contact with "or" logic; by these two ends, passive contact; with two wires, draw; access a switching value and receive modular converter; (this functions of modules is that switching value signal is transformed into the receivable address signal of fire main frame); then by module output, with wire access fire main frame, receive signal end.

After these two signal leading fire fire-fighting main frames, in fire-fighting main frame, utilize the programing function of main frame own, to these two signals reprogram configuration for " with " logic, make main frame only when above-mentioned two signals occur simultaneously, just send output signal, output signal starts the associated drives module of drench valve through wire access, drench valve driver module directly drives each mechanism action of drench valve, go forward side by side line correlation fire alarm region spray of grid water-filling.

In Fig. 1, the concrete equipment in each position and accessory can be used the concrete equipment choosing model of power plant and unit and producer's product to change according to each, only need reach and meet function.

For example, in the present embodiment, actual to take the product list using in structure as follows:

Fire main frame and fire detecting system adopt: state-run four radiotechnology development centre, Ling Si factory Shijiazhuang products

Central authorities' fire alarm monitoring machine: model: H8810A-K

Prober interface module: model: H8455

Switching value signal conversion module: model: H8451

Temperature rise rate detector: model: H8408 (5 ℃-20 ℃ per minute of temperature rise rate)

Tranformer protection rack is: Xuji Electric Co., Ltd's product type: WFB-800A

In Fig. 2, represented logic chart when utility model is successfully used in nuclear power plant, herein, for the basic structure shown in Fig. 1, the positions such as nuclear island factory, conventional island, main transformer have been carried out having expanded to, can cover and have more the position that needs to carry out fire disasters protection in nuclear power plant, realize good detection and processing capacity.

Above embodiment of the present utility model is explained in detail, above-mentioned embodiment is only optimum embodiment of the present utility model, but the utility model is not limited to above-described embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from the utility model aim, make a variety of changes.

Claims (2)

1. a large-scale outdoor transformer regional fire integrated fire control device, is characterized in that: comprising: transformer regional fire detecting temperature cable, temperature cable signal are accepted module, fire alarm main frame, drench valve and triggered and accept module, tranformer protection rack, logic processing circuit, switching signal modular converter;

Wherein, transformer regional fire detecting temperature cable is arranged at monitored transformer region, collecting temperature abnormal signal, its output is connected in temperature cable signal and accepts module, the output that temperature cable signal is accepted module is connected in fire alarm main frame, and the collection temperature anomaly signal receiving is sent to fire alarm main frame, and temperature cable signal is accepted module and is output as switching value, logical truth represents excess Temperature, detects fire;

Tranformer protection rack comprises transformer differential protection signal output apparatus, Transformer Heavy Gas guard signal output circuit, and output is switching value, and logical truth indication transformer is abnormal, need to protect;

Logic processing circuit comprises logical "or", the output that comprises transformer differential protection signal output apparatus, Transformer Heavy Gas guard signal output circuit for tranformer protection rack, carry out the computing of logical "or", the output of logic processing circuit is connected in fire alarm main frame;

Fire alarm main frame comprises logical “and” circuit, for temperature cable signal, accepts the output of module and logic "and" operation is carried out in the output of logic processing circuit, and then logical “and” circuit output is connected to drench valve and triggers and accept module;

Drench valve triggers accepts the output that module is accepted fire alarm main frame, controls the action of drench valve, and logical truth represents to start drench valve.

2. a kind of large-scale outdoor transformer regional fire integrated fire control device as claimed in claim 1, is characterized in that:

Tranformer protection rack comprises transformer differential protection signal output apparatus, Transformer Heavy Gas guard signal output circuit is become by the passive contact switches set of often opening, and in closure, means and need to protect;

The passive contact switch of the generation type of the logical "or" circuit comprising in logic processing circuit for tranformer protection rack is comprised to transformer differential protection signal output apparatus, Transformer Heavy Gas guard signal output circuit; connect together, make it form the output passive switch contact signal of "or" logic.