Grain warehouse electrical automation control system

Abstract

The invention provides a grain warehouse electrical automation control system which is characterized in that power leads (L1, L2, L3 and N) of electrical installations inside and outside a grain warehouse are connected with relays (15) to (26) in an electrical automatic control box outside the warehouse; the relays (15) to (26) are connected with an intelligent power distributor (30) of the automatic control box; and the intelligent power distributor (30) is connected with a remote computer (29) through a switch (27) and a network extender (28). An instruction issued by a workstation (grain warehouse electrical automation control system) on a desktop of the remote computer (29) of an office building controls the corresponding relays (15) to (26) of grain warehouse electrical appliances through the network extender (28), the switch (27) and the intelligent power distributor (30), operates relative electrical appliances (1) to (12) through the relays (15) to (26), and realizes remote control of the working procedures of nitrogen inflation of the grain warehouse, gas circulation in the warehouse, grain inspection and monitoring, axial fan ventilation, and the like.

Description

1. Technical field [0001] The invention relates to an electrical automatic control system, in particular to an electrical automatic control system for a grain storage warehouse. 2. Background technology [0002] At this stage, the grain storage silo is generally equipped with a gas conveying pipe network used for air-conditioning and aeration operations, and a manual valve for connecting and disconnecting the pipeline matched with the pipe network; the axial flow fan at the end of the warehouse for ventilation and cooling (10 ), silo gable axial flow fan (11), silo roof interlayer axial flow fan (12), manual device for controlling the opening of fan door and window door; circulation fan (6 ). When inspecting the grain condition of the granary, it is necessary to manually enter the warehouse for inspection. Generally, a daily manual inspection system is implemented under abnormal conditions, and a weekly and monthly regular inspection system is implemented under normal condi...

AI Technical Summary

Problems solved by technology

When inflating the grain storage silo, choose the way of inflating the grain surface or under the grain surface. The staff need to go to the remote grain storage silo to enter the silo and then turn the manual valve of the pipe network in the silo, and then move it outside the silo. The manual valve of the pipe network outside the warehouse, through the control of the manual valve, guides the passage of gas entering the warehouse; manually pulling the manual valve, any wrong action will lead to the failure of the inflation operation; in the inflation operation under the low oxygen environment in the warehouse If it is more than two supplementary air operations, inspection needs or to remedy the error of a manual valve, the operator must wear a safe and reliable air respirator, and more than three people enter the warehouse together, and each time entering the warehouse cannot exceed For half an hour, in the low-oxygen warehouse environment, it is difficult to work under the membrane. If there is a slight misoperation or improper observation, the airbag will be filled and the valve will be damaged. The distance between the machine room and the warehouse is long, and problems often occur. unable to adjust or process in a timely manner

For ventilation and cooling operations, when turning on the axial flow fans (10) (11) (12) for mechanical ventilation, the staff need to go to the warehouse to open and close the axial flow fan door, window door, and floor slot door, and then turn on the on-site axial flow fan (10)(11)(12) switch, start the axial flow fan (10)(11)(12) for operation; if the weather changes suddenly, it is difficult to shut down and close the doors and windows due to the large range of the reservoir area; manual operation cannot realize automatic Constant temperature and regular ventilation

When carrying out the temperature and humidity balance of the grain layer in the warehouse and the balance of the concentration of gas components, the staff need to go to the warehouse to check the passage of the pipe network, turn the manual valve to the correct position, and manually start the circulation fan (6) on the spot to carry out the operation. Increased the workload and labor intensity of the operator

To check the grain situation in the warehouse under the controlled atmosphere state (phosphide fumigation state), it is necessary to manually bring an air respirator and a sieve into the warehouse for inspection; in a low-oxygen (highly toxic) environment, the operation is very dangerous. From the perspective of the safety of the staff, the operating time and workload are often limited; the manual daily inspection and regular inspection system are limited by the low oxygen (high toxicity) environmental conditions, and a more scientific and accurate result and conclusion comparison should be obtained. It is difficult, and the inspection method cannot achieve continuity, and cannot observe the dynamic process of stored grain and the growth and death process of pests

[0003] At present, the computer (29) automatic temperature measurement system is widely used in the detection of the temperature of the grain layer in the grain storage room of the grain storage warehouse, the air temperature and humidity in the warehouse, and the atmospheric temperature and humidity outside the warehouse, but it is only limited to the temperature and humidity detection process, forming a computer (29) The singleness of network application causes waste of resources

[0004] At the present stage, most grain storage depots use computer (29) video surveillance systems, which are mainly used for safety and security work; however, they have not been developed and applied to the grain storage and storage operation process in the granary

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