What are the hidden dangers of cold storage, and the disadvantages of cold storage boards in low tem

For ammonia cold storage: the main problem is ammonia leakage, followed by equipment leakage, equipment short circuit, wire aging, insulation materials, operators are locked in the warehouse, forklifts in and out of the cold storage line of sight is poor, etc.

ForFreonCold storage: In addition to the problem of ammonia leakage above, other problems.

Solution: Strengthen the awareness of safe operation and safety precautions of refrigeration workers, eliminate hidden dangers in time, and give feedback and response in time when problems are found.

Cold storage management system:

1. Cold storage staff must abide by the rules and regulations of the catering service center.

Abide by working hours, obey work arrangements, and ensure safe production and materials**.

Second, the refrigeration worker should strictly abide by the operating procedures.

According to the requirements of the storage temperature, start and stop on time, check and maintain the machinery and equipment frequently, and repair and report to the leader in time if any abnormalities are found.

3. Refrigeration workers should always check the temperature in the warehouse, otherwise, if they cause economic losses, they will be punished financially.

4. Refrigeration workers are not allowed to leave their posts to drink, sleep or engage in activities unrelated to their own work during working hours, otherwise they will be punished according to the relevant provisions of the catering service center.

5. The cold storage computer room is not allowed to stay privately, and non-staff accommodation is not allowed to enter the computer room.

1. Electrical hazards.

There are many and important electrical equipment in cold storage, and once an electrical fault occurs, it will bring great safety risks. Therefore, when operating cold storage, it is necessary to ensure the safety and practicability of electrical equipment, which needs to be inspected and maintained regularly, and employees must have sufficient knowledge of electrical safety to ensure that various operating specifications and electrical equipment protection measures are strong.

2. Environmental hazards.

The environment of the cold storage has a very important impact on the storage quality of the goods. If the ambient temperature of the cold storage exceeds the specified range, it will affect the preservation effect of the goods. And when it comes to temperature control, there are a few important points to pay attention to:

The first is to keep a good ventilation environment, which can ensure the freshness of the environment in the cold storage: the second is to change the filter regularly to ensure that the air quality is appropriate; In addition, the cold storage, entrances and exits and vents should be cleaned regularly to avoid dust and debris affecting their normal operation.

3. Hidden dangers of equipment.

The quality of cold storage equipment has a crucial impact on the storage quality and storage environment, and there can be no equipment aging, damage and other failures. Therefore, it is necessary to have professional equipment maintenance personnel to regularly inspect and maintain the equipment to ensure the normal operation of the equipment.

Fourth, fire hazards.

With the continuous improvement of the purchase and storage equipment and electrical equipment, the source of danger has increased, and once a fire occurs, it can occur at any time. Therefore, the implementation of the fire prevention system in the cold storage, the comprehensive elimination of hidden dangers, at the same time, in the cold storage should have fire protection facilities and automatic alarm devices, as well as fire knowledge education, fire extinguishing equipment, fire extinguishers use, etc., to ensure that the fire prevention facilities of the cold storage meet the regulations, and can play a normal role.

Fifth, signs and signs hidden dangers.

In this special place of cold storage, there must be a sign in which the name of the strong indication effect. These signs should be spaced out so that people can easily find where they are looking, and they should also have clear instructions, such as instructions, to help people operate correctly.

Sixth, the hidden danger of human factors.

In the daily management process of cold storage, the work attitude and behavior of employees will also affect work safety. Therefore, it is necessary to strengthen the daily management education of employees, correct the bad habits and behaviors of employees in a timely manner, standardize the work process and operation requirements of employees, monitor and prevent theft, improve work responsibility and safety awareness, and form a safety production awareness with full participation.

1. Electrical fault: low temperature and high humidity in the cold storage, and the electrical in the warehouse is prone to short circuit faults;

2. Insulation of the reservoir body: generally B2 flame retardant grade, easy to burn in case of open flame;

3. Refrigerant leakage: pollute the environment and even endanger the human body;

4. Leakage of electrical equipment, with potential danger of electric shock;

5. The exhaust section of the equipment is high temperature and high pressure, and there is a risk of scalding and explosion venting.

Low-temperature cold storage is a high-temperature cold storage, because each cold storage storage variety is different, the room temperature requirements are not the same, for low-temperature cold storage, the temperature requirements are lower, and the requirements for its performance and quality are also higher.

Generally, the compressor of the international brand is used. On the other hand, the difference is that under the same conditions, the lower the temperature of the cold storage, it is easy to affect the cost of accessories, energy consumption, etc., while the high temperature cold storage is more suitable for controlling the cost of energy consumption.

1. Different temperatures: The temperature of high-temperature cold storage generally ranges from about 10. The temperature of low-temperature cold storage generally ranges from -15 to 18 and -15 to 20.

2. The items that can be stored are different: the high-temperature cold storage is mainly a cold storage for fruits and vegetables, and fruits and vegetables can be effectively stored in this temperature range.

Low-temperature cold storage can generally be used to put frozen food; Frozen meat, seafood, Troochai ice cream, etc., foods or goods that need to be frozen. Low-temperature cold storage: quick-frozen cold storage, also known as low-temperature storage.

It is used to store frozen food, and its storage temperature range is -35 -18, the frozen storage temperature of general meat is -25 -18, and the storage temperature of aquatic products is -30 --20.

High-temperature cold storage: Constant temperature cold storage, also known as high-temperature storage, is mainly used to store fresh eggs, fruits, watercolors, flowers, Chinese herbal medicines, as well as high-end furniture and clothing and other goods.

The storage varieties are different, the room temperature is not the same, generally between 0-4, the cooling equipment adopts an air cooler, installed at one end of the warehouse, and the air duct with multiple nozzles is used to evenly supply air.

Since fruits and vegetables still have a respiration effect in storage, in addition to maintaining suitable temperature and humidity conditions in the warehouse, appropriate fresh air (outdoor fresh air) should be introduced.

1. The pressure shown by the high and low pressure gauge is low (low pressure may be pressurized); 2. Poor air return, no frost or condensation in the air return tube; 3. The temperature in the warehouse drops too slowly or the refrigeration effect is poor. How does the expansion valve work and what is the fixed position of the thermometer? 1. The temperature sensing bag fixed on the outlet pipeline of the evaporator induces the superheating temperature of the evaporator outlet, so that the pressure in the temperature sensing package is generated, and the space on the upper part of the diaphragm is transmitted by the capillary tube, and the diaphragm transmits the signal to the thimble (executing the Huai stupid mechanism) in an elastic deformation way under the action of pressure, so as to adjust the opening degree of the valve and control the flow of refrigerant.

2. Under normal circumstances, the temperature sensing bag should be installed on the return pipe of the horizontal section of the evaporator outlet as much as possible, and should be far away from the compressor suction port and close to the evaporator, and should not be installed vertically. When the diameter of the horizontal air return pipe is less than 7 8 (22mm), the temperature sensor bag should be installed below the vertical axis of the air return pipe and about 45° to the horizontal axis, that is, the top end of the air return pipe, about "1 o'clock" direction; When the diameter of the horizontal return pipe is greater than 7 8 (22mm), the temperature sensing bag should be installed below the vertical axis of the return pipe, which is consistent with the horizontal axis, that is, the "3 o'clock" position of the return pipe.

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The installation of cold storage panels is a key component of the installation of insulation systems in cold storage. At present, the cold storage plate in the cold storage installation is often a double-sided color steel plate or stainless steel plate of polyurethane insulation material, which has the advantages of lightweight, good thermal insulation performance, safety and environmental protection, strong hardness, corrosion resistance, etc., and is convenient and quick to install, suitable for various types of cold storage installation. If the cold storage is not installed with the cold storage board, the low temperature in the warehouse and the high temperature of the storage temperature are easy to cause colding, etc., so that in addition to the obvious temperature fluctuations in the warehouse and is not conducive to the storage of stored products, it will also cause the uninterrupted start and stop cooling of the refrigeration system and affect the use efficiency and life of the grinding pants.

In addition, the cold storage board of insulation materials such as polyurethane can not be exposed to the sun and rain, which is easy to cause the consequences of the deformation of the library board and other consequences that affect the thermal insulation performance, so the cold storage board can not be installed in the open air, but needs to be installed in the brick-concrete warehouse, steel structure warehouse, greenhouse and other shading and rain-sheltering warehouses.

Cold storage I know that we can see everywhere in our lives, there are fruit cold storage, meat cold storage, vegetable cold storage, etc., cold storage products are needed in our lives, but for cold storage businesses, we must do a good job of safety protection, because cold storage also has risk factors, the following Li Da refrigeration staff and you share what are the risk factors of cold storage?

1: fire accident cold storage is also a technical operation industry, during the operation of cold storage, if the operator does not operate properly, or because of the problem of equipment defects resulting in cold storage failure, it will be prone to fire accidents, which cold storage businesses have to pay more attention to.

2: The cold storage must have a special safety channel for evacuation, and the surrounding environment of the cold storage must not have flammable and explosive materials, and the emergency lighting is installed in the passage of the cold storage to evacuate the cold storage operators, and the cold storage alarm device should also be installed in accordance with the regulations.