Changsha Dahexi agricultural products logistics center
Cold storage installation position
Dahe West Avenue, Ningxiang City, Changsha City, Hunan Province
Changsha Dahexi agricultural products logistics center is a first-class wholesale market of agricultural products approved by Changsha municipal government. The total investment of the project is 20 billion yuan, covering a total area of 10000 mu, including 10 professional markets of 3000 mu, deep processing base of 1000 mu of agricultural products, and modern agricultural practice demonstration base of 6000 mu. It is planned to create the largest scale, the most advanced concept and the most complete categories of safety, safety and environmental protection Healthy and modern market cluster. The project has been listed in China's livelihood demonstration project, provincial and municipal key project projects, and provincial Tongxin park. It is one of the top ten professional market clusters in the planning and layout of Changsha City and the market relocation undertaking place of Changsha City. It is also a major livelihood project to solve the problem of "vegetable basket", "rice bag" and "fruit plate" for nearly 1.5 million people in the west of Changsha River and nearly 60 million people in surrounding cities. The project started preparation in July 2013 and started construction in May 2014. At present, the total investment has reached more than 1.7 billion yuan, with more than 3000 mu of common land, including more than 1500 mu of land for use by requisitioners and land for circulation. Since its opening on December 16, 2016, the market has made positive contributions in stabilizing prices, ensuring supply, flood relief and targeted poverty alleviation. In 2018, we will strive to achieve a vegetable market turnover of 15 billion.
Detailed introduction of cold storage
2 parallel 90p high temperature screw unit + 4 parallel 50p low temperature piston unit, imported brand Xike is used in the warehouse Air cooler The design temperature of high temperature storage is 0 ℃ and the design temperature of low temperature is - 18 ℃ for storage of fruits and vegetables. It is mainly used to store meat (pork, beef, mutton, etc.)
Cold storage project
Supporting cold storage project of large scale cold chain logistics industrial park
Cold storage equipment
2 parallel 90p high temperature screw unit + 4 parallel 50p low temperature piston unit.
Logistics cold storage Design scheme of
Logistics cold storage should be built in a place with convenient transportation and reliable sources of water and electricity supply. The warehouse site should be surrounded by good environmental sanitation conditions, and try to avoid harmful gases, smoke, dust from industrial and mining enterprises and pollution sources from infectious hospitals. The cold storage of meat and fish processing plants should be located at the windward side of the minimum frequency of wind direction in summer in urban residential areas, near the production area or in a place convenient for commodity distribution.
The buildings are generally composed of cold processing and refrigeration buildings, cold processing auxiliary buildings, transportation facilities, management and living buildings, and ice making room buildings of machine rooms. Cold processing and cold storage buildings are collectively referred to as "cold room", including the cooling room with a temperature of about 0 ℃, a freezing room with a temperature of - 23 ~ - 30 ℃, a cold storage room with a temperature of - 12 ~ - 20 ℃ and an ice storage room with a temperature of - 4 ~ - 10 ℃.
The layout of cold storage should make the technological process reasonable, short route, no cross, clear high and low temperature zoning, reduce the area of enclosure structure as much as possible, and arrange the column network orderly, and consider the convenience of expansion and maintenance. Its plane is generally square, and the multi-storey cold storage is often built into dumbbell type or single type. The dumbbell type divides the high-temperature and low-temperature warehouses into two independent enclosure structures. The hall is connected in the middle, and the effect is good.
In the single type, the floor and ground are separated by thermal insulation wall between the high and low temperature warehouses. The warehouse door is connected with the normal temperature hall, and the air curtain is set on the door to prevent the cold air from overflowing. Materials with low thermal conductivity, such as rice husk, cork, asphalt, expanded perlite block, etc., shall be laid on the wall, ceiling and ground of cold storage as insulation layer to prevent external heat flow from penetrating into the warehouse and increase heat load. In order to prevent the outdoor water vapor from penetrating into the insulation layer, it is also necessary to lay materials with high permeability resistance, such as asphalt felt, on the high temperature side of the insulation layer as an air barrier.
The particularity of logistics cold storage
1. Food safety is related to human health and even life safety;
2. The short shelf life and fast quality loss of food determine the timeliness of food cold chain logistics operation;
3. The diversity of food and different requirements for storage temperature and humidity determine the diversity of food logistics environment;
4. As an important part of food supply chain, cold storage requires traceability of products.
The function of logistics cold storage has changed from "low temperature storage" type of traditional cold storage to "circulation type" and "cold chain logistics distribution" type, and its facilities are constructed according to the use requirements of low temperature distribution center.
Functions of logistics cold storage
1. It has built a low-temperature hall, closed platform, electric sliding type cold storage door, anti-collision flexible sealing opening, platform height adjustment device (lifting platform), realizing the "door-to-door" loading and unloading operation has become the symbol of modern logistics cold storage.
2. Due to the frequent import and export of goods and large throughput, a special tally room (area) is set up according to the needs of production and operation. The temperature of the tally area is generally controlled at 0 ～ + 7 ℃.
3. The refrigeration system design of logistics cold storage pays more attention to environmental protection and energy saving. The temperature control range of the warehouse is wide, and the selection, layout and wind speed field design of the cooling equipment consider the refrigeration requirements of various goods. Equipped with perfect automatic temperature detection, recording and automatic control device.
4. Establish a perfect computer network system to make the cold storage supply chain distribution management scientific and achieve food safety traceability. In the European Union, the United States and Japan, all enterprises in the food supply chain have the legal obligation to implement the traceability system.
5. In order to realize the management of goods according to the principle of "first in, first out", the freezing and cold storage mode is changing to shelf type and pallet type, which is conducive to improving the quality of goods storage and reducing the loss.
6. The three-dimensional automatic cold storage adopts computer management, which can realize the full automation of loading and unloading, stacking, temperature control and refrigeration equipment operation in the warehouse, without any operator in the warehouse. By using computer management, we can provide the name, quantity, location and temperature records of the goods in stock at any time, automatically settle the storage expenses and invoice, etc., which improves the management efficiency and greatly reduces the management personnel.