Intelligent fire control and inspection combined cabinet

Abstract

The invention provides an intelligent fire control and inspection combined cabinet. The intelligent fire control and inspection combined cabinet comprises a fire control room, a power supply module, a data processing module, a frequency converter module and a fire pump power-frequency / variable-frequency control circuit. The fire pump power-frequency / variable-frequency control circuit comprises a fire pump, a first contactor and a second contactor, wherein the fire pump is provided with two driving input ends, the first driving input end is connected with the frequency converter module through the first contactor, the second driving input end is connected with the power supply module through the second contactor, and the second contactor is also connected with the frequency converter module. The data processing module controls the frequency converter module to output two driving signals with different frequencies to the fire pump power-frequency / variable-frequency control circuit according to a fire control signal and an inspection control signal, and the fire pump is started to conduct the corresponding work procedure. The intelligent fire control and inspection combined cabinet is simple in structure, circuit components can be highly reused, the performance is reliable, and full-time normal operation of the fire pump and control equipment can be ensured.

Description

technical field [0001] The invention relates to the field of control and detection of fire-fighting equipment, in particular to an intelligent fire-fighting control inspection combined cabinet. Background technique [0002] At present, most units that use fire pumps are only equipped with control cabinets. With the implementation of the mandatory industry standard "GA30.2 Performance Requirements and Test Methods for Fixed Fire Water Supply Equipment" promulgated by the Ministry of Public Security, although the situation has improved, However, most of the methods use the split mode execution system of "control cabinet + fire inspection cabinet", and most of them are not produced by one manufacturer. [0003] In terms of the function of the inspection cabinet, a separate fire inspection cabinet can only detect the working status of the fire pump to ensure that the fire pump can rotate normally when it is on fire, but it cannot detect the control cabinet of the fire pump. As ...

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Problems solved by technology

[0003] From the function of the inspection cabinet, a separate fire inspection cabinet can only detect the working status of the fire pump to ensure that the fire pump can rotate normally when it is on fire, but it cannot detect the control cabinet of the fire pump

As we all know, the control cabinets of fire pumps are difficult to use, and most of them are stored in the basement, with poor ventilation and high air humidity. The cabinets are mostly equipped with electronic and electrical products. Oxidation, dust backlog, mouse damage and other reasons may lead to abnormal operation of electrical components, directly affecting the effective control of the fire pump. become a catastrophe

[0004] Most of the existing fire pump control and inspection cabinets are split type. This type of product has the following disadvantages: the control cabinet of the fire pump can only be used to control the fire pump normally. Water source is required; the fire inspection cabinet can only periodically test the performance of the fire pump to ensure that the fire pump can operate normally when a fire occurs; since the two functions of control and inspection cannot be compatible at the same time, it is not effective in terms of actual results. not optimal

[0007] In the first technical scheme, the fire pump belongs to the type of "one use and one standby, mutual backup". It adopts soft start control and periodic frequency conversion inspection mode, including independent soft start power frequency start circuit and frequency conversion inspection. Inspection circuit, the circuit structure is complex, because the functions are independent of each other, it is impossible to detect whether the control circuit is normal or not during the normal inspection

[0008] In the second technical scheme, the fire pump belongs to the type of "one use and one standby, mutual backup", which adopts direct start control and periodic frequency conversion inspection mode, including mutually independent power frequency start circuit and frequency conversion inspection circuit , the circuit structure is still relatively complex, and because each function is independent of each other, it is impossible to detect whether the control circuit is normal or not during normal inspections.

[0009] In the third technical solution, the fire pump belongs to the "one use and one standby, mutual backup" type, which adopts the method of direct start-up control, periodic power frequency inspection, and additional pipeline pressure relief valve. Although this solution solves the problem of With the intercommunication of the above components, the whole machine can be tested during the inspection, but it can only be used for fire control / inspection of low-power equipment. When the power exceeds 30KW, the starting current of the motor will cause an instantaneous large current to the power grid. Impact, that is, there are many unfavorable factors such as main circuit breaker overload tripping, transformer overload, etc., so it cannot meet the working needs of high-power fire-fighting equipment

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