CN201689351U

CN201689351U - Intelligent ventilating system of grain depot

Info

Publication number: CN201689351U
Application number: CN201020144444XU
Authority: CN
Inventors: 鲍浩达
Original assignee: STATE GRAIN RESERVES YUYAO DEPOT
Current assignee: STATE GRAIN RESERVES YUYAO DEPOT
Priority date: 2010-03-26
Filing date: 2010-03-26
Publication date: 2010-12-29
Anticipated expiration: 2020-03-26

Abstract

The utility model discloses an intelligent ventilating system of a grain depot. A computer is connected with a temperature and humidity measuring instrument through a communication bus and a connecting wire, and then is connected with a plurality of temperature-difference and humidity control instruments; the temperature-difference and humidity control instruments are connected with the axial flow fan of a window and a window-door opener; the temperature and humidity measuring instrument is connected with a PT100+ macromolecule temperature and humidity sensor; and the temperature and humidity measuring instrument is connected with an in-cabin temperature sensor. The intelligent ventilating system of the grain depot has the beneficial effects of: 1, capturing optimal ventilating chance in any time as long as the ventilating requirements are reached, and still playing the role of heat insulating and preserving when stopping ventilating and immediately closing the window after the temperature difference measured by the system does not reach the set requirements; 2, sufficiently using cold air and using the temperature difference to set the coming chance for capturing cold air to reach same to mostly use natural cold air and improve the cooling effect. Compared with the conventional manual and mechanical ventilating and cooling, the energy consumption of the intelligent ventilating system of the grain depot can save is less than that of manual control by 63.4 percent for reaching the same effects, and the cooling is balanced. Moreover, compared with manually operating the grain depot for ventilating and cooling, the labour force is completely released.

Description

Intelligent ventilation system of grain depot

Affiliated technical field

The utility model relates to grain depot and manages and control aeration-cooling device concentratedly by computing machine, especially can measure in temperature, atmospheric humidity and the storehouse temperature in real time and calculate the temperature difference, catch optimal ventilation opportunity, automatic shutter warehouse window, ventiduct and blower fan reach the ventilation unit that delays the rising of grain temperature, quality ageing.

Background technology

At present, grain depot aeration-cooling most employing mechanical ventilation commonly used and natural ventilation system, optimal ventilation is difficult to grasp opportunity, and blindness is big, and the high-power machinery ventilation equipment move trouble, and not only power consumption is bigger, and the grain moisture content loss is big, causes the grain decrement.Haze if meet precipitation during the ventilation, close window and ventiduct, workman's labor capacity is very big.

Summary of the invention

Big in order to solve existing conventional mechanical ventilation power consumption, during ventilation grain moisture content loss bigger, equipment moves trouble, and the problem that is difficult to grasp of aeration-cooling time, the utility model provides a kind of intelligent ventilation system of grain depot.

In order to solve the problems of the technologies described above, technical solution adopted in the utility model is:

A kind of intelligent ventilation system of grain depot, computing machine is connected temperature, humidity measuring instrument by communication bus with connecting line, connect some temperature difference, humidity controller table again; The temperature difference, humidity controller table connect axial flow blower and window opening device in the window; Temperature, humidity measuring instrument connect the PT100+ Temperature-Humidity Sensor; The temperature difference, humidity controller table connect temperature sensor in the storehouse.

The electric pushrod of described window opening device for stretching and swing up and down, the lower end vertically connects one " Z " the font connecting rod, the other end of connecting rod is connected with rotating shaft, and rotating shaft is connected on the window by the pole of two bendings;

Described axial flow blower is arranged in the window.

The beneficial effects of the utility model are: summer temperature is higher, daytime is based on airtight, do not ventilate, midnight's period in the evening, temperature is relatively low, adopts the utility model to ventilate, as long as reach air-conditioning requirement, can catch the best opportunity of ventilating at any time, simultaneity factor is measured the temperature difference and is not reached the setting requirement, and ventilation stops, and window is closed at once, still play the heat-insulation and heat-preservation effect, treat in the storehouse behind the heat accumulation, meet the temperature difference and set requirement, the ventilation of windowing once more, so circulation is carried out, and power consumption still less like this.By the ventilation of several periods, the storehouse temperature reaches the temperature level substantially, and air feels pure and fresh in the storehouse.

Adopt winter the utility model aeration-cooling, can make full use of cold air, catch cold air with the size setting of the temperature difference and come opportunity, utilize natural cooling source maximumly, suck low-temperature receiver by grain heap bottom ventilating opening, make cold air, improved cooling-down effect lentamente through the grain heap.The utility model is compared with the artificial mechanism of routine is aeration-cooling, reaches same effect, can loss-rate manual control few 63.4%.And cooling is balanced, does not stay the dead angle.

The silo ventilation of windowing in the past needs each window of manual unlocking, and there are 20 windows in storehouse, every building, and all opening wastes time and energy, and open all windows of whole reservoir area, more will expend great amount of manpower and time.If the unexpected rainfall of weather is avenged or hazed, with the artificial window that closes, the time has little time at all.Be chosen in midnight's ventilation of windowing the period,, be difficult on the time not only guarantee, and depend merely on the person on duty all windows are opened that its labour intensity is well imagined especially with the ventilation of manually windowing.Use the utility model ventilating system, not only select optimal ventilation opportunity, reach aeration-cooling purpose effectively, and can be readily solved again such as the problems referred to above according to temperature, humidity.

Description of drawings

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

Fig. 1 is a system construction drawing of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model.

Fig. 3 is an embodiment control box structural map of the present utility model.

Fig. 4 is an embodiment installation diagram of the present utility model.

Embodiment

Temperature and storehouse temperature, grain are gentle to confidential relation, have temperature contrast between the three again, when temperature is higher than the storehouse temperature, are unfavorable for aeration-coolingly, but when temperature was lower than the storehouse temperature, the inside and outside temperature difference that forms in storehouse helped ventilating and cooling.The storehouse temperature drop is got off, delay the rising of grain temperature, very favourable to grain quality.Simultaneously in aeration-cooling process, if the unexpected rainfall of weather or when hazing, rainfall induction and humidity inductive in time judge, and close window, stop to ventilate, and ensure the safety of grain storage.According to this principle, the real-time temperature of computing machine by gathering, humidity, storehouse temperature are constantly carried out the data contrast according to the condition of setting, in case meet aeration-cooling condition, the actuating of relay is opened window or blower fan automatically.

Each north and south, warehouse wall respectively has 5 windows, and 4 windows in the present embodiment are no matter what all are the protection domains of this patent only certainly.North window is installed window-opening mechanism at interval, and window is installed window-opening mechanism and axial flow blower in the middle of the southern wall.Being provided with of window window-opening mechanism can be decided according to different needs; the protection domain of this patent does not limit position and number; a control box is installed in each warehouse, arranges temperature sensor 51, repeater relay 12, the time relay 121,122, DC24V Switching Power Supply 13, operation mode changeover switch 10 etc. in earth leakage protective device 8, the temperature difference, humidity controller table 5, the storehouse in the case.Temperature sensor connects the temperature difference, humidity controller table in the storehouse, there are temperature, atmospheric humidity measurement instrument 3 to make shared device outside the storehouse, and link to each other with computing machine 1 with the form of holding hand with RS485 order wire 2 with every storehouse, form main control computer to the multi-point remote communication network, realization multimachine acknowledge communication.Temperature and temperature, atmospheric humidity are patrolled and examined in the storehouse in 1 pair of every storehouse of computing machine, detect whether to meet the ventilation condition that certain storehouse is set, to this storehouse transmit button order.

A kind of intelligent ventilation system of grain depot, computing machine 1 is connected temperature, humidity measuring instrument 3 by 485 communication buss 2 with nine needles serial port line connecting line 4, connect some temperature difference, humidity controller table 5 again, the temperature difference, humidity controller table 5 connect the axial flow blower 22 and the window opening device of window by control device, temperature, humidity measuring instrument 3 connect PT100+ Temperature-Humidity Sensor 31, and the temperature difference, humidity controller table 5 connect temperature sensor 51 in the storehouse;

Described window opening device vertically is connected one for stretching up and down with the lower end of the electric pushrod 20 that swings " Z " the font connecting rod, the other end of connecting rod is connected with rotating shaft, and rotating shaft is connected on the window by the pole of two bendings; The operational mode of rotating on the control box panel 18 is changed switch, can carry out computing machine " automatically " control and " manually " control.Earth leakage protective device 8 external 380v three-phase four-wire powers.The DC24V power supply of output connects connection terminal a1, a2, a5, wherein the a1 terminals are by socket 19, for southern window electric pushrod 20 work, a2, a5 terminals are selected a2 end or the output of a5 end respectively by switching button 11, for north window or the work of ventilation road junction electric pushrod.The a7 terminals connect the travel switch of window opening device, and Control Shaft flow fan 22 starts and closes.The a3 terminals connect temperature sensor 51 in the storehouse, and the a4 terminals connect the temperature difference, humidity controller table 5 and are connected the composition communication network with communication bus.The A6 terminals are to set up by the action control external equipment of A.C. contactor.The outer connecting line of control box all is laid in the wire casing 21.Described axial flow blower 22 is arranged in the window.

In Fig. 1, computing machine 1 is in the grain depot office building, and 7 fields are established temperature and atmospheric humidity measurement point in the reservoir area, and each storehouse is a node, and the storehouse number is the mailing address of this storehouse control instrument.The instrument address of measuring temperature and atmospheric humidity be " always storehouse number+1 ".All nodes are coupled together to hold the hand form by order wire, form main control computer to the multi-point remote communication network.

In embodiment illustrated in fig. 2; insert 380V three-phase four-wire system power supply to earth leakage protective device 8; when the operation mode changeover switch on the control box panel 10 during in " automatically " position; the temperature difference, humidity controller table 5 can receive computing machine and " open " instruction; relay contact conducting in the table; output AC220V electric current; run indicator 9 is bright; the HH64P relay gets electronic work; contact 9a and 5a, 10a and 6a, 11a and 7a by often open transfer to normally closed; simultaneously the time relay 121 electric,

contact

1a and 3a, 8a and 6a by often open transfer to normally closed.Because the contact 10a of HH64P relay connects the positive pole of S-120-24 Switching Power Supply 13, contact 11a connects the negative pole of S-120-24 Switching Power Supply.The time relay 121 electric after, contact 3a exports DC24V with 6a is just changeing electric current to the ON time of having set, and electric pushrod is stretched out, drive the window rotation axis and open window, after window is opened fully, touch travel switch, A.C. contactor 14 gets the electronic axial flow blower operation that makes.Relay contact disconnects in the temperature difference, humidity controller table 5 receive computing machine " pass " instruction, show, and cuts off output current, and run indicator 9 is gone out, the HH64P relay electric-loss, and contact 9a and 1a, 10a and 2a, 11a and 3a revert to normally closed.

Contact

9a and 1a be normally closed after, the time relay 122 electric,

contact

1a and 3a, 8a and 6a by often open transfer to normally closed, output DC24V reverse current is to the ON time of having set, make the electric pushrod withdrawal, drive the window rotation axis and close window, axial flow blower is out of service.The ON time control window opening angle that the time relay 121 and the time relay 122 are set.

Fig. 3 is an embodiment control box structural map of the present utility model.The control box panel is provided with earth leakage protective device 8HH64P repeater relay 12, the XMT-9700MK temperature difference, humidity controller table 5, S-120-24 Switching Power Supply 13, CJX2-1610 A.C. contactor 14, the JSS20-48AMS time relay 121,122, connection terminal 16, switching button 11.

Claims

1. intelligent ventilation system of grain depot, it is characterized in that, computing machine (1) is connected temperature, humidity measuring instrument (3) by communication bus (2) with connecting line (4), connect some temperature difference, humidity controller table (5) again, connect axial flow blower (22) and window opening device in the window (24), temperature, humidity measuring instrument (3) connect PT100+ Temperature-Humidity Sensor (31), and the temperature difference, humidity controller table (5) connect temperature sensor (51) in the storehouse.

2. a kind of intelligent ventilation system of grain depot according to claim 1, it is characterized in that, described window opening device vertically is connected one for stretching up and down with the lower end of the electric pushrod that swings (20) " Z " the font connecting rod, the other end of connecting rod is connected with rotating shaft, and rotating shaft is connected on the window by the pole of two bendings.

3. a kind of intelligent ventilation system of grain depot according to claim 2 is characterized in that, described axial flow blower (22) is arranged in the window.