Wine plant fire-fighting water pressure constant pressure control system

Abstract

The utility model provides a winery fire-fighting water pressure constant pressure control system, which comprises a control system, the control system is connected with a PID (Proportion Integration Differentiation) controller, the PID controller is respectively connected with electrodes of two water pumps, water inlets and water outlets of the two water pumps are respectively connected with a water supply pipeline and a fire-fighting pipeline, the water supply pipeline is provided with a pressure sensor, and the pressure sensor is connected with the PID controller. The pressure sensor transmits the pressure in the water supply pipeline to the control system, and the output frequency of the motor is controlled through the microcomputer PID, so that the rotating speed of the water pump motor is automatically adjusted. When the pipe network water pressure changes, the system automatically adjusts the rotating speed of the water pump to maintain the pipe network pressure. When the water pressure of the pipe network is lower than a set lower limit value of the system, the rotating speed of the water pump is accelerated until the pressure of the pipe network reaches a set upper limit value, the rotating speed of the water pump is slowed down, the water pump enters a dormant state and is kept at a constant pressure value, and the fire-fighting system can continuously and stably supply water when a fire occurs and provide enough flow and pressure; and the fire extinguishing and rescue requirements of fire-fighting equipment are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of winery fire water pressure constant voltage control system. BACKGROUND

[0002] Winery will produce a large amount of ethanol, methane, ammonia, sulfur dioxide and other flammable and explosive gas in brewing and storage process, these gases are extremely easy to cause explosion and fire under proper concentration, and the existing fire extinguishing device is manual equipment such as fire extinguisher, because equipment is too dispersed and cannot be monitored, so it is difficult to deploy uniformly after fire occurs, it is difficult to meet the complex environment of many dangerous sources in winery. As CN106075783B discloses a kind to be connected with manual control panel and field fire control box through wire with power conversion function fire control system;And electromagnetic coil and fire equipment control switch are arranged in power conversion box, electromagnetic coil is connected with low-voltage power supply in manual control panel and manual control switch, and low-voltage power is input into electromagnetic coil by manual control switch;The electromagnetic coil can make fire equipment control switch close after energization, so that 220V electricity is transmitted to field fire control box, so that the uniformity of fire equipment is realized, and the automatic switching of fire equipment is also realized, but it does not monitor the pressure in fire pipe, so that the fire pipe cannot continuously and stably supply water during fire fighting. SUMMARY

[0003] To solve the above technical problems, the utility model provides a kind of winery fire water pressure constant voltage control system.

[0004] The utility model is realized by the following technical schemes.

[0005] A kind of winery fire water pressure constant voltage control system, including control system, the control system is connected with PID controller, the PID controller is connected with the electrode of two water pumps respectively, the inlet and outlet of two water pumps are connected with water supply pipeline and fire pipe respectively, pressure sensor is installed on the water supply pipeline, and pressure sensor transmits the pressure in water supply pipeline to control system;

[0006] The control system includes power supply circuit and control circuit, the power supply circuit includes 1# pump motor M1 and 2# pump motor M2, the input end of 1# pump motor M1 is connected with the contact of contactor KM1 respectively, the contact of static relay JZ1, the input end of 2# pump motor M2 is connected with the contact of contactor KM2, static relay JZ2 respectively, the contact of contactor KM1 and the contact of contactor KM2 are connected with the output end of motor controller VF, the input end of motor controller VF is connected with circuit breaker QF1, circuit breaker QF1 is connected with the contact of static relay JZ1, the contact of static relay JZ1 and static relay JZ2 is connected with three-phase power supply respectively;

[0007] The control system comprises a 1# pump selection circuit, a 2# pump selection circuit, a manual start-stop circuit, an automatic start-stop circuit, a running indication circuit, a stop indication circuit, a fault indication circuit and a controller VF connected to a control power supply.

[0008] The 1# pump selection circuit and the 2# pump selection circuit each comprise a coil of a contactor KM1 and a coil of a contactor KM2, the coil of the contactor KM1 and the coil of the contactor KM2 are connected to normally open contacts of static relays JZ1 and JZ2 respectively, the normally open contacts of the static relays JZ1 and JZ2 are connected to normally open contacts and normally closed contacts of a double-pole switch SA1 respectively; the coil of the contactor KM1 and the coil of the contactor KM2 are connected to a negative pole of the control power supply, and the normally open contacts and the normally closed contacts of the double-pole switch SA1 are connected to a positive pole of the control power supply.

[0009] The manual start-stop circuit comprises an emergency stop switch SS and a start switch SF, the start switch SF is connected in parallel with contacts of a relay KA1; the automatic start-stop circuit comprises a PLC switch; the emergency stop switch SS and the PLC switch are connected to normally closed contacts and normally open contacts of a switch SA2 respectively, and the start switch SF and the PLC switch are connected to a normally closed contact of a relay KA3 and a coil of the relay KA1 in sequence, the coil of the relay KA1 is connected to the negative pole of the control power supply, and the normally closed contacts and the normally open contacts of the switch SA2 are connected to the negative pole of the control power supply.

[0010] The running indication circuit, the stop indication circuit and the fault indication circuit each comprise a running indication lamp HG, a stop indication lamp HR and a fault indication lamp HY connected to the negative pole of the control power supply respectively, and the other ends of the running indication lamp HG, the stop indication lamp HR and the fault indication lamp HY are connected to normally open contacts of a relay KA2, normally closed contacts of the relay KA2 and normally open contacts of a relay KA3 respectively, and the normally open contacts of the relay KA2, the normally closed contacts of the relay KA2 and the normally open contacts of the relay KA3 are connected to the negative pole of the control power supply.

[0011] The R1A and R2A pins of the controller VF are connected to coils of the relay KA2 and the relay KA3 respectively, the R1C and R2C pins of the controller VF are connected to the positive pole of the control power supply, the AI2 and COM pins of the controller VF are connected to a pipeline pressure feedback signal through a conversion chip G1, and the AQ1 and COM are connected to a frequency feedback signal.

[0012] The utility model discloses beneficial effect lies in: based on pressure to control, when the pressure of fire protection pipe network is below lower limit value, the constant pressure pump is automatically started, and the system pressure is increased, when the pressure is higher than upper limit value, the constant pressure pump is automatically stopped and runs, and upper limit value and lower limit value are adjusted by electric contact pressure gauge and are adjusted the rotating speed of water pump motor through PID controller, guarantee that the fire protection system can continuously stably supply water when the fire occurs, and enough flow and pressure are provided to satisfy the fire extinguishing and rescue demand of fire fighting equipment. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is system principle schematic drawing of the utility model;

[0014] Figure 2 It is control system principle schematic drawing of the utility model;

[0015] Figure 3 It is power supply circuit principle schematic drawing of the utility model. PREFERRED EMBODIMENT

[0016] The technical scheme of the utility model is further described below, but the scope of protection is not limited to the description.

[0017] A kind of winery fire water pressure constant voltage control system, including control system, the control system is connected with PID controller, the PID controller is connected with the electrode of two water pumps respectively, the inlet and outlet of two water pumps are connected with water supply pipeline and fire protection pipeline respectively, pressure sensor is installed on the water supply pipeline, and pressure sensor transmits the pressure in water supply pipeline to control system;The working principle of constant voltage control system is to control motor by PID control, to keep the pressure in water supply pipe network constant.System takes pipe network water pressure as set parameter, adjusts the output frequency of motor by microcomputer PID, to automatically adjust the rotating speed of water pump motor.When pipe network water pressure changes, the system automatically adjusts water pump rotating speed to keep pipe network pressure.When pipe network water pressure is below system set lower limit value, water pump rotating speed accelerates, until pipe network pressure reaches set upper limit value, water pump rotating speed slows down, enters hibernation state, keeps at constant pressure value, realizes automatic PID constant voltage control.

[0018] The control system includes a power supply circuit and a control circuit, the power supply circuit includes a 1# pump motor M1 and a 2# pump motor M2, the input end of the 1# pump motor M1 is connected with the contact of the contactor KM1 and the contact of the static repeater JZ1 respectively, the input end of the 2# pump motor M2 is connected with the contact of the contactor KM2 and the contact of the static repeater JZ2 respectively, the contact of the contactor KM1 and the contact of the contactor KM2 are connected with the output end of the motor controller VF, the input end of the motor controller VF is connected with the circuit breaker QF1, the circuit breaker QF1 is connected with the contact of the static repeater JZ1, and the contacts of the static repeater JZ1 and the static repeater JZ2 are connected with three-phase power supply respectively.

[0019] The control system comprises a 1# pump selection circuit, a 2# pump selection circuit, a manual start-stop circuit, an automatic start-stop circuit, a running indication circuit, a stop indication circuit, a fault indication circuit and a controller VF connected to the control power supply.

[0020] The 1# pump selection circuit and the 2# pump selection circuit respectively comprise a coil of contactor KM1 and a coil of contactor KM2, the coil of contactor KM1 and the coil of contactor KM2 are connected to the normally open contact of static relay JZ1 and the normally open contact of static relay JZ2 respectively, the normally open contact of static relay JZ1 and the normally open contact of static relay JZ2 are connected to the normally open contact and the normally closed contact of double-pole switch SA1 respectively; the coil of contactor KM1 and the coil of contactor KM2 are connected to the negative pole of the control power supply, and the normally open contact and the normally closed contact of double-pole switch SA1 are connected to the positive pole of the control power supply.

[0021] The manual start-stop circuit comprises an emergency stop switch SS and a start switch SF, the start switch SF is connected in parallel with the contact of relay KA1; the automatic start-stop circuit comprises a PLC switch; the emergency stop switch SS and the PLC switch are connected to the normally closed contact and the normally open contact of switch SA2 respectively, and the other ends of the start switch SF and the PLC switch are connected to the normally closed contact of relay KA3 and the coil of relay KA1 in sequence, the coil of relay KA1 is connected to the negative pole of the control power supply, and the normally closed contact and the normally open contact of switch SA2 are connected to the negative pole of the control power supply.

[0022] The running indication circuit, the stop indication circuit and the fault indication circuit respectively comprise a running indication lamp HG, a stop indication lamp HR and a fault indication lamp HY connected to the negative pole of the control power supply respectively, the other ends of the running indication lamp HG, the stop indication lamp HR and the fault indication lamp HY are connected to the normally open contact of relay KA2, the normally closed contact of relay KA2 and the normally open contact of relay KA3 respectively, and the normally open contact of relay KA2, the normally closed contact of relay KA2 and the normally open contact of relay KA3 are connected to the negative pole of the control power supply.

[0023] The R1A and R2A pins of the controller VF are connected to the coils of relay KA2 and relay KA3 respectively, the R1C and R2C pins of the controller VF are connected to the positive pole of the control power supply, the AI2 and COM pins of the controller VF are connected to the pipeline pressure feedback signal through a conversion chip G1, and the AQ1 and COM are connected to the frequency feedback signal.

Claims

1. A constant pressure control system for winery fire water pressure, characterized by: The control system is connected with a PID controller, the PID controller is connected with electrodes of two water pumps respectively, water inlets and outlets of the two water pumps are connected with a water supply pipeline and a fire pipeline respectively, a pressure sensor is installed on the water supply pipeline, and the pressure sensor transmits pressure in the water supply pipeline to the control system. The control system comprises a power supply circuit and a control circuit, the power supply circuit comprises a 1# pump motor M1 and a 2# pump motor M2, input ends of the 1# pump motor M1 are connected with contacts of a contactor KM1 and contacts of a static relay JZ1 respectively, input ends of the 2# pump motor M2 are connected with contacts of a contactor KM2 and contacts of a static relay JZ2 respectively, the contacts of the contactor KM1 and the contacts of the contactor KM2 are connected with an output end of a motor controller VF, an input end of the motor controller VF is connected with a circuit breaker QF1, the circuit breaker QF1 is connected with the contacts of the static relay JZ1, and the contacts of the static relay JZ1 and the contacts of the static relay JZ2 are connected with a three-phase power supply. The control system comprises a 1# pump selection circuit, a 2# pump selection circuit, a manual start-stop circuit, an automatic start-stop circuit, a running indication circuit, a stop indication circuit, a fault indication circuit and a controller VF connected with a control power supply.

2. The winery fire water pressure constant pressure control system of claim 1, wherein: The 1# pump selection circuit and the 2# pump selection circuit respectively comprise a coil of the contactor KM1 and a coil of the contactor KM2, the coil of the contactor KM1 and the coil of the contactor KM2 are connected with normally open contacts of the static relay JZ1 and the static relay JZ2 respectively, the normally open contacts of the static relay JZ1 and the static relay JZ2 are connected with normally open contacts and normally closed contacts of a double-blade switch SA1 respectively, the coil of the contactor KM1 and the coil of the contactor KM2 are connected with a negative pole of the control power supply, and the normally open contacts and the normally closed contacts of the double-blade switch SA1 are connected with a positive pole of the control power supply.

3. The winery fire water pressure constant pressure control system of claim 1, wherein: The manual start-stop circuit comprises an emergency stop switch SS and a start switch SF, the start switch SF is connected with contacts of a relay KA1 in parallel, the automatic start-stop circuit comprises a PLC switch, the emergency stop switch SS and the PLC switch are connected with normally closed contacts and normally open contacts of a switch SA2 respectively, the start switch SF and the PLC switch are connected with a normally closed contact of a relay KA3 and a coil of the relay KA1 in sequence, the coil of the relay KA1 is connected with a negative pole of the control power supply, and the normally closed contacts and the normally open contacts of the switch SA2 are connected with the negative pole of the control power supply.

4. The winery fire water pressure constant pressure control system of claim 1, wherein: The running indication circuit, the stop indication circuit and the fault indication circuit respectively comprise a running indication lamp HG, a stop indication lamp HR and a fault indication lamp HY connected with the negative pole of the control power supply respectively, the other ends of the running indication lamp HG, the stop indication lamp HR and the fault indication lamp HY are connected with a normally open contact of a relay KA2, a normally closed contact of the relay KA2 and a normally open contact of a relay KA3 respectively, and the normally open contact of the relay KA2, the normally closed contact of the relay KA2 and the normally open contact of the relay KA3 are connected with the negative pole of the control power supply.

5. The winery fire water pressure constant pressure control system of claim 1, wherein: The R1A and R2A pins of the controller VF are connected with the coils of the relays KA2 and KA3 respectively, the R1C and R2C pins of the controller VF are connected with the positive pole of the control power supply, the AI2 and COM pins of the controller VF are connected with the pipeline pressure feedback signal through the conversion chip G1, and the AQ1 and COM are connected with the frequency feedback signal.

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