CN212585235U

CN212585235U - Special high leakproofness granary air conditioning equipment of gas conditioning warehouse

Info

Publication number: CN212585235U
Application number: CN202020689612.7U
Authority: CN
Inventors: 林国银; 孔茗; 常佳昊
Original assignee: Green Cube Energy Technology Jiangsu Co ltd
Current assignee: Green Cube Energy Technology Jiangsu Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-02-23
Anticipated expiration: 2030-04-29

Abstract

The utility model provides a special high-tightness air conditioning device for a granary special for an air-conditioned cold store, wherein a scroll compressor is communicated with a finned condenser, a liquid storage tank, a drying filter, a liquid viewing mirror, a stop valve, a solenoid valve, a thermostatic expansion valve and an air treatment mechanism in sequence through a connecting pipe; the air treatment mechanism comprises a shell, and a fin type evaporator, a fin type subcooler, an ultrasonic humidifier and an axial flow centrifugal blower which are sequentially and internally arranged on the shell, wherein one end of the shell is provided with an air outlet corresponding to an air outlet hole of the axial flow centrifugal blower, the other end of the shell is provided with an air inlet, and the air inlet is provided with a temperature and humidity sensor. The utility model discloses simple structure and multiple functional, the complete machine leakproofness is high, and to the characteristics in air-conditioned cold storage, to the refrigeration of nitrogen gas, the unit adopts PLC programmable control, can link to each other with grain condition monitored control system, and cell-phone APP function is taken in the unit control, can just control the unit and open and stop above the cell-phone, and monitoring machine group running state.

Description

Special high leakproofness granary air conditioning equipment of gas conditioning warehouse

Technical Field

The utility model belongs to the technical field of grain air conditioning, concretely relates to special air conditioning equipment of special high leakproofness granary of gas-conditioned storehouse.

Background

At present, low-temperature storage of grains becomes a trend, and the low-temperature storage is beneficial to improving the quality of grains, preventing insect pests, reducing storage loss and the like. In order to better reduce the loss and mildew of grain respiration to stored grain and further inhibit and stop insect pests, nitrogen with the concentration of more than 98 percent is filled into a granary to store grain, and the inertia and asphyxiability of the nitrogen are utilized to kill the insect pests and delay the grain aging.

The air-conditioned cold store has high requirements on the tightness of the store body and equipment, and generally requires that the unit comprises a return air pipe and adopts a sealing design with the pressure of 500pa, and the pressure is reduced by not more than 50pa in 15 minutes. The existing unit generally adopts a mode of sealing glue between a frame and a door plate in order to achieve the sealing effect, but the sealing effect is not ideal, the unit cannot be disassembled for maintenance, and the previous sealing effect is difficult to achieve once the unit is disassembled.

The existing air-conditioning store air conditioner is still calculated and designed according to the traditional air medium, but more than 98 percent of the air-conditioning store air conditioner is nitrogen, and the thermodynamic property of the nitrogen is greatly different from that of the air, so that the existing air-conditioning store air conditioner cannot be simply designed. Meanwhile, the control of the grain air conditioning unit is laggard, and the grain air conditioning unit can only be controlled by a single machine, cannot be networked and cannot timely and remotely know the temperature in the granary.

Disclosure of Invention

The technique that exists is not enough to the aforesaid, the utility model aims at providing a special air conditioning equipment of special high leakproofness granary of gas-conditioned cold storage, simple structure, it is multiple functional, when keeping grain microthermal, to the high gas tightness of having guaranteed the granary, can guarantee that unit and supporting tuber pipe are under 500pa pressure, 15 minutes pressure drop is not more than 50pa, has solved the refrigerated problem of gas-conditioned cold storage concentration nitrogen gas more than 98%.

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

a special high-tightness air conditioning device for a granary special for an air-conditioned cold store comprises a refrigeration component; the refrigeration assembly includes: the vortex type compressor is sequentially communicated with the fin type condenser, the liquid storage tank, the drying filter, the liquid viewing mirror, the stop valve, the first electromagnetic valve, the thermal expansion valve, the air processing mechanism and the control device through a first connecting pipe;

the air treatment mechanism includes the casing and in proper order locates the finned evaporator, finned subcooler, ultrasonic humidifier, the axial compressor centrifugal blower of casing, the one end of casing be equipped with one with the corresponding air outlet of exhaust vent of axial compressor centrifugal blower, an air intake has been seted up to the other end of casing, air intake department is equipped with a temperature and humidity sensor, the finned evaporator pass through No. two connecting pipes with scroll compressor connects, an solenoid valve with between the stop valve be equipped with on the connecting pipe with No. three connecting pipes that the finned subcooler is linked together, be equipped with No. two solenoid valves on No. three connecting pipes, a solenoid valve with between the thermal expansion valve be equipped with on the connecting pipe with No. four connecting pipes that the finned subcooler is linked together.

Furthermore, one end of the finned condenser is connected with an axial flow fan.

Further, the scroll compressor, the finned condenser, the first electromagnetic valve, the second electromagnetic valve, the thermostatic expansion valve, the temperature and humidity sensor, the finned evaporator, the finned subcooler, the ultrasonic humidifier and the axial flow centrifugal blower are all electrically connected with a PLC controller.

Furthermore, the refrigeration component adopts nitrogen with the concentration of more than 98 percent.

Furthermore, the refrigerating capacity of the compressor can be increased, the air quantity of the air feeder is reduced, the heat exchange area of the evaporator is reduced, the heat exchange area of the condenser is increased, and the operation balance of the whole unit is guaranteed.

Furthermore, the PLC controller adopts PLC programmable control, can set and display the operation parameters of the unit, simultaneously considers the limit working condition of the unit operation, has the functions of automatic fault diagnosis and fault treatment assistance, and simultaneously has a standard 485 interface, can be connected with an upper computer and has the functions of remote control and networking.

Further, add cell-phone APP function on the unit control system, a module can control 10 units simultaneously, conveniently controls the unit on the cell-phone.

Further, still including setting up the seal assembly between unit door plant and frame, seal assembly includes cavity pi type sealing strip and O type sealing washer, is equipped with the recess of placing the unit door plant on the section bar of frame, and it has a plurality of cavity pi type sealing strips to inlay in a recess, is equipped with the O type sealing washer of a plurality of high strength direct foaming on another right-angle side relatively.

Has the advantages that: simple structure and multiple functional, the complete machine has very high leakproofness, simultaneously to the characteristics of gas-conditioned cold storage, special research and development is to the refrigeration of nitrogen gas:

(1) compared with the traditional air, the special high-tightness air conditioning device for the granary for the air-conditioned cold store, disclosed by the utility model, uses the nitrogen with the concentration of more than 98%, so that the nitrogen cooling of the air-conditioned cold store can be ensured;

(2) the utility model discloses special air conditioning equipment of special high leakproofness granary of gas-conditioned storehouse adopts PLC control, takes cell-phone APP function, can link to each other with the grain condition detecting system, can open on the cell-phone and stop the unit, monitor the unit running state;

(3) sealed for traditional sealed gluey form of beating, adopt labyrinth multi-structure to seal between the frame of unit and the door plant, can guarantee the gas tightness of unit, the sealed effect of many times dismouting still can not destroyed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a special air conditioning device for a high-tightness granary for an air-conditioned cold store according to an embodiment of the present invention;

fig. 2 is the labyrinth seal structure diagram of the frame door plate of the present invention.

Description of reference numerals:

1-a scroll compressor, 2-a finned condenser, 3-a liquid storage tank, 4-a dry filter, 5-a liquid sight glass, 6-a stop valve, 7-a solenoid valve, 8-a thermal expansion valve, 9-a shell, 10-a temperature and humidity sensor, 11-a finned evaporator, 12-a finned subcooler, 13-an ultrasonic humidifier, 14-an axial flow centrifugal blower, 15-an air inlet, 16-an air outlet, 17-a control box, 18-an axial flow fan, 19-a second solenoid valve, 20-a first connecting pipe, 21-a third connecting pipe, 22-a fourth connecting pipe, 23-a second connecting pipe, 24-a pressure controller, 25-a unit door plate, 26-a section notch, 27-a metal insertion strip, 28-hollow pi-shaped sealing strip and 29-O-shaped sealing ring.

Detailed Description

The present invention is described below with reference to specific examples. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention in any way.

As shown in fig. 1, the special air conditioning device for the high-tightness granary special for the air-conditioned cold store comprises a refrigeration component;

the refrigeration subassembly includes: the system comprises a scroll compressor 1, a finned condenser 2, a liquid storage tank 3, a drying filter 4, a liquid viewing mirror 5, a stop valve 6, a first electromagnetic valve 7, a thermal expansion valve 8, an air processing mechanism and a control device, wherein the scroll compressor 1 is sequentially communicated with the finned condenser 2, the liquid storage tank 3, the drying filter 4, the liquid viewing mirror 5, the stop valve 6, the first electromagnetic valve 7, the thermal expansion valve 8 and the air processing mechanism through a first connecting pipe 20; one end of the finned condenser 2 is connected with an axial flow fan 18;

the air treatment mechanism comprises a shell 9, and a finned evaporator 11, a finned subcooler 12, an ultrasonic humidifier 13 and an axial flow centrifugal blower 14 which are arranged in the shell 9 in sequence, one end of the shell 9 is provided with an air outlet 16 corresponding to an air outlet hole of the axial flow centrifugal blower 14, the other end of the shell 9 is provided with an air inlet 15, a temperature and humidity sensor 10 is arranged at the air inlet 15, the finned evaporator 11 is connected with the scroll compressor 1 through a second connecting pipe 23, a third connecting pipe 21 communicated with the finned subcooler 12 is arranged on the first connecting pipe 20 between the first electromagnetic valve 7 and the stop valve 6, a second electromagnetic valve 19 is arranged on the third connecting pipe 21, and a fourth connecting pipe 22 communicated with the fin type subcooler 12 is arranged on the first connecting pipe 20 between the first electromagnetic valve 7 and the thermostatic expansion valve 8;

the control device comprises a control box 17 and a PLC (programmable logic controller) which is arranged in the control box 17, the scroll compressor 1 is provided with the fin type condenser 2, the first electromagnetic valve 7, the second electromagnetic valve 19, the thermostatic expansion valve 8, the temperature and humidity sensor 10, the fin type evaporator 11, the fin type subcooler 12, the ultrasonic humidifier 13 and the axial flow centrifugal blower 14 which are electrically connected with the PLC.

Preferably, the refrigeration component adopts nitrogen with the concentration of more than 98 percent. Specifically, the main physical properties of air and nitrogen are shown in tables 1 and 2:

table 1 the main physical properties of air are as follows:

table 2 the main physical properties of nitrogen are as follows:

as can be seen from the above two tables, the density of nitrogen gas is 1.205 to 1.160/1.205=4% lighter than air at 21 ℃, and the specific heat capacity at 25 ℃: 1.038-1.005/1.005=3.3%, the difference in thermal properties between wet nitrogen and wet air is also large. Aiming at the problems, when the unit is designed, the refrigerating capacity of the compressor can be increased, the air quantity of the air feeder is reduced, the heat exchange area of the evaporator is reduced, the heat exchange area of the condenser is increased, and the operation balance of the whole unit is ensured.

Preferably, a PLC controller arranged in the control box 17 adopts PLC programmable control, can set and display the operation parameters of the unit, simultaneously considers the limit working condition of the unit operation, has the functions of fault automatic diagnosis and fault processing help, and simultaneously has a standard 485 interface, can be connected with an upper computer, and has the functions of remote control and networking. Add cell-phone APP function on unit control system, a module can control 10 units simultaneously, conveniently controls the unit on the cell-phone.

FIG. 2 is a view of a frame door panel labyrinth seal. The sealing assembly comprises a hollow pi-shaped sealing strip 28 and an O-shaped sealing ring 29, the end part of the unit door panel 25 is positioned in a groove on a frame section, the groove is formed by matching a limiting plate at the inner side with a section notch 26 at the outer side and a metal insertion strip 27, and the two hollow pi-shaped sealing strips 28 are embedded in the limiting plate and are contacted with the side wall of the unit door panel 25; the two O-shaped sealing rings 29 are formed by high-strength direct foaming, are positioned at the bottom of the groove and are in contact with the end face of the unit door plate 25; the other side wall of the frame is simultaneously and structurally connected with the unit door panel 25 in a sealing way; meanwhile, a hollow cavity in the section bar is provided with a heat preservation layer, and the unit door plate 25 is made of foaming materials for heat preservation and heat insulation; and the high air tightness of the unit is ensured by four-way sealing on two sides. Adopt special-shaped sealing fillet to install between unit door plant and the frame, it is sealed effectual, convenient dismantlement does not have screwed connection simultaneously, further reduces the leakage rate.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A special high-tightness air conditioning device for a granary special for an air-conditioned cold store comprises a refrigeration component; the refrigeration assembly includes: the vortex type compressor is sequentially communicated with the fin type condenser, the liquid storage tank, the drying filter, the liquid viewing mirror, the stop valve, the first electromagnetic valve, the thermal expansion valve, the air processing mechanism and the control device through a first connecting pipe; the air treatment mechanism comprises a shell, and a finned evaporator, a finned subcooler, an ultrasonic humidifier and an axial flow centrifugal blower which are sequentially and internally arranged on the shell, wherein one end of the shell is provided with an air outlet corresponding to an air outlet of the axial flow centrifugal blower, the other end of the shell is provided with an air inlet, the air inlet is provided with a temperature and humidity sensor, the finned evaporator is connected with the scroll compressor through a second connecting pipe, a third connecting pipe communicated with the finned subcooler is arranged on the first connecting pipe between the first electromagnetic valve and the stop valve, a second electromagnetic valve is arranged on the third connecting pipe, and a fourth connecting pipe communicated with the finned subcooler is arranged on the first connecting pipe between the first electromagnetic valve and the thermostatic expansion valve; the scroll compressor, the finned condenser, the first electromagnetic valve, the second electromagnetic valve, the thermostatic expansion valve, the temperature and humidity sensor, the finned evaporator, the finned subcooler, the ultrasonic humidifier and the axial flow centrifugal blower are all electrically connected with a PLC (programmable logic controller); it is characterized in that the preparation method is characterized in that,

the PLC controller adopts PLC programmable control, can set and display the operation parameters of the unit, simultaneously considers the limit working condition of the unit operation, has the functions of automatic fault diagnosis and fault processing assistance, is provided with a standard 485 interface, can be connected with an upper computer, and has the functions of remote control and networking; the mobile phone control system is characterized by further comprising an external unit control system, wherein the external unit control system is additionally provided with a mobile phone APP function, and one module can simultaneously control 10 units, so that the units can be conveniently controlled on the mobile phone; still including setting up the seal assembly between unit door plant and frame, seal assembly includes cavity pi type sealing strip and O type sealing washer, is equipped with the recess of placing the unit door plant on the section bar of frame, and it has a plurality of cavity pi type sealing strips to inlay in a recess, is equipped with the O type sealing washer of a plurality of high strength direct foaming on another right angle face relatively.

2. The special air conditioning device with high sealing performance for the grain bin in the air-conditioned cold store of claim 1, wherein the air conditioning device comprises: one end of the finned condenser is connected with an axial flow fan.

3. The special air conditioning device with high sealing property for the grain bin in the air conditioned cold store of claim 1, wherein the refrigeration component adopts nitrogen with the concentration of more than 98%.