CN201314061Y

CN201314061Y - Microcomputer-controlled fire-fighting water supply system

Info

Publication number: CN201314061Y
Application number: CNU2008201344779U
Authority: CN
Inventors: 张伟林; 王学成; 吕廷顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-21
Filing date: 2008-08-21
Publication date: 2009-09-23
Anticipated expiration: 2018-08-21

Abstract

The utility model provides a microcomputer-controlled fire-fighting water supply system, which consists of a water pump, a control cabinet, a valve, a pressure sensor and the like, wherein the control cabinet comprises a microcomputer system, a transducer, a low-voltage apparatus and the like. Normally, the system is in a standby state; the microcomputer controls the low-voltage apparatus to switch off the conducer, but regular electrified patrol inspection is carried out; when a fire-fighting signal is received, the transducer is first switched on, and meanwhile, the microcomputer detects the actual pressure of a pipe network and compares the actual pressure with a set pressure in order to control the frequency of the transducer and regulate the rotation speed of the water pump, so that the pressure of the outflow pipe network can always be stabilized in a set range in order to avoid the over-high pressure of the pipe network. The utility model can effectively prevent the over-high pressure of the pipe network and the defect that the service life of the transducer is affected by the long-time electrified state of the transducer, thus achieving the effects of protecting the pipe network and prolonging the service life of the equipment. Moreover, the automatic water supply system is simple and particularly applicable to automatic spraying, water curtain, hydrants and the like.

Description

Microcomputer control fire water supply equipment

1, technical field

The utility model relates to a kind of fire water supply equipment, specifically a kind of microcomputer control fire water supply equipment.

2, background technology

At present, the importance of fire water supply equipment in building facilities, more and more admitted by society, existing fire water supply equipment water pump control mode has two kinds: power frequency operation mode and converting operation mode, when the former receives the fire-fighting signal that Fire Services Communication Centre sends in control system, the fire-fighting main pump promptly starts the input power frequency operation, ductwork pressure is uncontrollable, at the fire-fighting initial stage, has only one when shower nozzle or a hydrant input fire fighting, water pump almost is operated in suppresses dead operating point, and ductwork pressure is the pressure during operate as normal head and shoulders above, causes the pipe network infringement easily, and, hydrant in the fire fighting process because of hypertonia is difficult to control, even the personal safety that may jeopardize operating personnel, though and the latter can realize constant-pressure operation, but frequency converter is in "on" position constantly, the life-span of its cooling fan is 2～3 years, and electric capacity is about 5 years application life, and frequency converter has influenced the life-span and the reliability of equipment again greatly like this.

3, utility model content

For overcoming the deficiency of above-mentioned technology, the utility model provides a kind of Automatic Control, fire water supply equipment safe and reliable to operation.

The technical scheme that the utility model adopted is: microcomputer control fire water supply equipment is made up of water pump, switch board, valve, pressure sensor, and switch board comprises: microsystem, frequency converter and low-voltage electrical, its design is: under the normal condition, equipment is ready, microcomputer control low-voltage electrical makes frequency converter be in off-position, and just regularly energising is patrolled and examined; And when receiving the fire-fighting signal, at first connect converter power supply, microcomputer detects the actual pressure of pipe network simultaneously, actual pressure and setting pressure are compared, control frequency converter frequency, regulate pump rotary speed, make the ductwork pressure all-the-time stable in setting range, avoid the pipe network superpressure.

The beneficial effects of the utility model are, have realized the feedwater of fire-fighting frequency-changing pressure stabilizing, have avoided pipe network to damage because of hypertonia, simultaneously, have guaranteed the life-span of frequency converter again, have increased the reliability of complete equipment, have prolonged equipment life.

4, description of drawings

Accompanying drawing 1 is a process structure schematic diagram of the present utility model.

Among the figure, 1, switch board, 2, the fire-fighting main pump, 3, the fire-fighting stand by pump, 4, fire cistern, 5, pressure sensor, 6, the fire water supply pipe network.

5, the specific embodiment

Explain below doing with regard to 1 pair of microcomputer control fire water supply equipment of the present utility model of accompanying drawing below.

As shown in Figure 1, microcomputer control fire water supply equipment of the present utility model is made up of switch board (1), fire-fighting main pump (2), fire-fighting stand by pump (3) and pressure sensor (5), the water inlet pipe of fire-fighting main pump (2) and fire-fighting stand by pump (3) links to each other with fire cistern (4), pumping line is directly received on the fire water supply pipe network (6), and install pressure sensor (5) on the net at pumping line, pressure sensor (5) and switch board (1) UNICOM.Under the normal condition, computer controlled variable device power contactor frequently disconnects, and make frequency converter be in off-position, but in order to detect the complete equipment performance, it is electric that frequency converter is got, and patrols and examines test; During fire fighting state, microcomputer control low-voltage electrical apparatus gets frequency converter, pressure sensor (5) is transferred to switch board (1) with detected force value simultaneously, and by the rotating speed of Control System of Microcomputer by the Frequency Converter Control water pump, make this point pressure constant in setting range, avoid ductwork pressure too high and the infringement pipe network, equipment is moved more safely and reliably.

Institute it should be noted that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, the technical solution of the utility model is made amendment or is equal to replacement, and do not break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1, a kind of microcomputer control fire water supply equipment is made up of water pump, switch board, valve, pressure sensor etc., and switch board comprises: microsystem, frequency converter and low-voltage electrical apparatus etc., it is characterized in that: at pump outlet installing pressure sensor, pressure sensor provides the pressure signal of pipe network constantly for switch board.