For the ground insulation of large cold storage， we can that the ground insulation of medium-sized cold storage is more complex than that of small cold storage， and the ground insulation operation of large cold storage with larger warehouse area will be more complex. The common operations are as follows: first lay the ventilation pipe to prevent the ground from freezing drum cracking， then lay the XPS extruded plate (staggered laying is required when laying the extruded plate)， then lay the moisture-proof and vapor barrier on the upper and lower sides of the extruded plate， then pour the reinforced concrete (generally at least cm thick)， and then make the emery floor or epoxy floor according to the requirements. Among them， the XPS extruded plate is also laid according to the warehouse temperature. For example， the XPS extruded plate with thickness of ~ mm needs to be laid in the general low-temperature cold storage while the XPS extruded plate with thickness of ~ mm can be laid in the high-temperature cold storage.
Simple refrigeration is based on the volatilization of refrigerant in the condenser of the cold storage， so as to cool the refrigerant， and then input the refrigerant into the box or building of the refrigeration equipment to cool the air according to the heat exchanger. This kind of refrigeration has slow cooling speed， large total heat conduction temperature difference and complex system software， so it can only be used in less places， such as brine ice making and cold storage with constant temperature requirements.
Saint spiritusClean the condenser. The condenser is used as the heat dissipation and condensation of the compressor. Because it works in the outdoor environment， in the face of nature and for a long time， the condenser will be covered with a lot of dust and other foreign matters. These dust are firmly attached to the fins. If it is not handled manually， it is difficult to fall off. It can be diluted with cleaning agent according to a certain proportion， and evenly sprayed on the fins with a spray can. After waiting for minutes， it can be washed with clean water. If it is still not clean， the above can be repeated until the fins are clean.
Reasonable space: the power consumption of the cold storage is calculated according to the cold consumption of the cold storage， which usually includes two parts: the cold consumption during cargo cooling and refrigeration; It is the cooling consumption of the refrigeration room itself and operation management.
LevisStep of cold storage design: define the volume of the cold storage warehouse. The size of the cold storage should be based on the design of a large number of agricultural products to be stored for a long time. This volume is calculated based on the essential volume of stored goods accumulated in the cold storage， plus the row to row corridors， the indoor space between the pile and the wall， the ceiling and the gap of the packaging house. After the volume of the cold storage is determined， the length and height width ratio of the cold storage shall be determined. Necessary auxiliary engineering buildings and equipment shall also be considered in the design of cold storage， such as working intermediate， packaging and combing room，Saint spiritusHow much is the installation of cold storage per square meter， special tool warehouse， loading and unloading platform， etc.
Operating the unit: regularly observe the oil level and oil return of the compressor and the cleanliness of the oil. If the oil is dirty or the oil level drops， it shall be solved in time to avoid adverse effects.
Various construction materials such as material certificate， test report and stage acceptance record， shall be carried out simultaneously with the project construction， carefully， timely， and actively cooperate with the owner in design change and technical negotiation.
First， use a hammer to pad the wood on the polyurethane warehouse board between the two warehouse boards， so as to make the boards closely close to each other. Two sets of connecting pieces shall be wedged between the wall panel and the wall panel， and the two sets of connecting pieces shall be fixed on the upper， outer and lower sides of the gap between the wall panel and the wall panel respectively. The lower connecting piece shall be as close as possible to the lower side， so that the post cast concrete can cover the connecting piece. After the gap between the plate and the plate ground is wedged with a connector， it shall be about mm wide. If it does not meet the requirements，Saint spiritusCold storage of professional installation company， remove the plate， trim the plate edge， and then reinstall it to make the plate joint meet the requirements. When fixing the adapter， pay attention to fix the two parts of the adapter on the edges of the convex and concave library plates respectively， and fix them with rivets. The spacing of the adapter should be able to tension the two library plates. When wedging the wedge iron， the hammer shall be perpendicular to the wedge iron to prevent damaging the warehouse plate. The ground wedge iron at the upper and lower parts shall be wedged at the same time， and the wedge iron shall be fixed with rivets.
Air valve leakage and ring leakage will not only affect the rise of exhaust temperature of fresh-keeping warehouse， but also change the interstage pressure. As long as the compression ratio is higher than the normal value， the exhaust temperature will rise.
With the increasing use of cold storage， cold storage board， is also increasing. Because cold storage is different from other ordinary cold storage， it is important to the installation environment and temperature. Therefore， some small problems may be ignored during installation. According to the following understanding.
Process inspectionRelative humidity maintenance of quick-frozen warehouse: humidification of quick-frozen warehouse is very important， from centrifugal humidification to high-pressure micro fog humidification gas-water mixed humidification， to the current ultrasonic humidifier. The utility model has the advantages of small particles uniform humidification， no freezing and blocking， and no dirty blocking. The air conditioning humidifier we produce is specially designed for all kinds of vegetable and fruit quick freezing warehouses， which is essentially different from other humidifiers in the market: fully closed circulation， that is， return to the warehouse through the humidifier and isolate it from the outside air.
Simple refrigeration is based on the volatilization of refrigerant in the condenser of the cold storage， so as to cool the refrigerant， and then input the refrigerant into the box or building of the refrigeration equipment to cool the air according to the heat exchanger. This kind of refrigeration has slow cooling speed， such as brine ice making and cold storage with constant temperature requirements.
Frozen and refrigerated storage began to change to shelf and pallet storage to complete the goods according to & ldquo; First in first out & rdquo; It is conducive to improve the quality of commodity storage and reduce loss.
The overall construction achievements of the cold storage project have been put into use， and the service life can reach years.
Installation requirementsDuring the installation of cold storage board in cold storage， its installation quality will directly affect the temperature of cold storage. As an important structure used in the cold storage，Saint spiritusCold storage， the cold storage board should pay attention to the details of its installation， find out the problems that are easy to be ignored， and avoid the wrong installation， which will affect the use of the cold storage or the whole installation process， so as to waste resources and increase the cost.
Transportation: before the installation of the fresh-keeping storehouse， check the number of storeboards of the fresh-keeping storehouse according to the delivery note. When loading and unloading the warehouse board， handle it with care， and lay an anti scratch layer on each layer of the warehouse board and the ground joint.
Requirements for the cold storage time of the device: the cold storage of the refrigeration system using ammonia as refrigerant shall be supported in the place with low population density around.
Saint spiritusTechnical assurance measures for the installation of cold storage: during production in the production workshop， the production shall be carried out in strict accordance with the operation rules specified in ISO quality operation self inspection and inspection application shall be carried out to ensure that the factory pass rate is， and unqualified products are not allowed to leave the factory.
The common phenomenon of quick freezing storehouse is that the temperature of quick freezing storehouse can"t drop down or drops slowly. Now， a simple analysis is made on the reasons for the slow drop of temperature: the cold capacity loss of quick freezing storehouse is large due to poor thermal insulation or sealing performance; the poor thermal insulation performance is due to insufficient thickness of thermal insulation layer of pipeline and warehouse thermal insulation wall， resulting in poor thermal insulation and thermal insulation effect， It is mainly caused by improper selection of insulation layer thickness in design or poor quality of insulation materials in construction.
The insulation board of the cold storage adopts polyurethane double-sided color steel plate. The main effect of this cold storage insulation board is good sealing performance， insulation effect and moisture-proof effect， so as to ensure the refrigeration effect of the cold storage. The electric cold storage door is adopted for the cold storage door， and the cold storage management personnel can timely and effectively open and close the door when entering and leaving， so as to avoid the loss of refrigeration capacity of the cold storage.