阅读说明：本技术 一种舰船用冷藏冷冻设备能量平衡装置 (Energy balancing device of refrigeration and freezing equipment for ships ) 是由 林国银 孔茗 殷明 张俊 于 2019-12-03 设计创作，主要内容包括：本发明提供了一种舰船用冷藏冷冻设备能量平衡装置,属于制冷设备技术领域,旨在解决现有的舰船用冷藏、冷冻装置一般都使用两台压缩机,再备用两台压缩机,装置的系统复杂,成本比较高,使用也很不方便；使用一台压缩机对冷藏冷冻两个舱室进行制冷时,小系统的压缩机一般没有能量调节装置,会导致系统运行不稳定,无法正常运行。包括控制箱和通过管路连接的活塞式压缩机、壳管式冷凝器和两套冷风机和能量调节系统；本装置的能量平衡装置,能够保证当一个库温度达到设定要求的时候,自动开启能量调节装置,保证压缩机的正常运行。实现一台压缩机可以同时对两个库进行制冷,机组只需要再备用一台压缩机,整个系统结构简单,投资成本也大大降低。(The invention provides an energy balancing device of refrigeration and freezing equipment for ships, which belongs to the technical field of refrigeration equipment and aims to solve the problems that the existing refrigeration and freezing equipment for ships generally uses two compressors and then uses the two compressors for standby, the system of the equipment is complex, the cost is higher, and the use is inconvenient; when one compressor is used for refrigerating two refrigerating and freezing cabins, the compressor of a small system generally has no energy regulating device, so that the system can not stably run and can not normally run. The system comprises a control box, a piston compressor, a shell-and-tube condenser and two sets of air coolers and an energy regulating system, wherein the piston compressor, the shell-and-tube condenser and the two sets of air coolers and the energy regulating system are connected through pipelines; the energy balancing device of the device can ensure that the energy adjusting device is automatically started when the temperature of one warehouse reaches the set requirement, and the normal operation of the compressor is ensured. The two storehouses can be simultaneously refrigerated by one compressor, the unit only needs one compressor for standby, the whole system is simple in structure, and the investment cost is greatly reduced.)

1. An energy balancing device of refrigeration and freezing equipment for ships comprises a control box, a piston compressor, a shell-and-tube condenser and two sets of air coolers, wherein the piston compressor, the shell-and-tube condenser and the two sets of air coolers are connected through pipelines; the energy regulating system comprises a Freon electromagnetic valve, a Freon thermal expansion valve, a check valve and a pressure controller; the pressure controller is connected in series between the low-temperature air cooler and the piston compressor through a pipeline; one end of the Freon electromagnetic valve is communicated with a pipeline between the shell and tube condenser and the high-temperature air cooler; the other end of the Freon electromagnetic valve is connected with one end of the Freon thermostatic expansion valve in series through a pipeline; the other end of the Freon thermostatic expansion valve is communicated with a pipeline between the shell-and-tube condenser and the high-temperature air cooler; the check valve is connected in series between the low-temperature air cooler and the pressure controller through a pipeline; the Freon electromagnetic valve and the pressure controller are respectively electrically connected with the control box.

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to an energy balancing device of refrigeration and freezing equipment for ships.

Background

The refrigerating and freezing equipment for ships is core equipment of a ship food supply system, is necessary equipment related to the life of crews, and can provide food materials such as various vegetables, fruits, dairy products, fish meat and the like required by the life for the crews. The refrigerating and freezing device for ship uses two compressors corresponding to high temperature warehouse (vegetable warehouse and dairy warehouse) and low temperature warehouse (fish warehouse), because the temperature of the two storehouses is different, the high temperature warehouse is 2-5 deg.C, the low temperature warehouse is-18-20 deg.C, and the loads of the two storehouses are different, the refrigerating capacity of the two compressors is different. In order to ensure the use reliability of the refrigerating and freezing device for the ship, the common equipment for the ship is required to be used and prepared, so that the refrigerating and freezing device needs to select four compressors to ensure the use, and the system of the device is complex, the cost is high, and the use is inconvenient. According to the prior design, if one compressor is used in the high-temperature and low-temperature storehouses, when the temperature of one storehouse reaches the set requirement, the other storehouse still needs to continue to operate, the energy of the compressor at the moment far exceeds the requirement of the other storehouse, and the compressor of a small system generally does not have an energy regulating device, so that the system can not stably operate and can not normally operate.

Disclosure of Invention

In view of the technical defects, the invention aims to provide an energy balance device of refrigerating and freezing equipment for ships, which is additionally provided with the energy balance device in a system of a conventional refrigerating and freezing device, and can ensure that when the temperature of one warehouse reaches a set requirement, an energy adjusting device is automatically started, and the normal operation of a compressor is ensured. The two storehouses can be simultaneously refrigerated by one compressor, the unit only needs one compressor for standby, the whole system is simple in structure, and the investment cost is greatly reduced.

In order to solve the technical problems, the invention adopts the following technical scheme:

an energy balancing device of refrigeration and freezing equipment for ships comprises a control box, a piston compressor, a shell-and-tube condenser and two sets of air coolers, wherein the piston compressor, the shell-and-tube condenser and the two sets of air coolers are connected through pipelines; the energy regulating system comprises a Freon electromagnetic valve, a Freon thermal expansion valve, a check valve and a pressure controller; the pressure controller is connected in series between the low-temperature air cooler and the piston compressor through a pipeline; one end of the Freon electromagnetic valve is communicated with a pipeline between the shell and tube condenser and the high-temperature air cooler; the other end of the Freon electromagnetic valve is connected with one end of the Freon thermostatic expansion valve in series through a pipeline; the other end of the Freon thermostatic expansion valve is communicated with a pipeline between the shell-and-tube condenser and the high-temperature air cooler; the check valve is connected in series between the low-temperature air cooler and the pressure controller through a pipeline; the Freon electromagnetic valve and the pressure controller are respectively electrically connected with the control box.

The invention has the beneficial effects that: the energy balancing device is additionally arranged in the system of the conventional refrigerating and freezing device, so that the energy adjusting device can be automatically started when the temperature of one warehouse reaches a set requirement, and the normal operation of the compressor is ensured. The two storehouses can be simultaneously refrigerated by one compressor, the unit only needs one compressor for standby, the whole system is simple in structure, and the investment cost is greatly reduced.

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 the drawings without creative efforts.

Fig. 1 is a structural block diagram of an energy balance device of a refrigeration and freezing apparatus for a ship according to an embodiment of the present invention.

Description of reference numerals:

check valve 1, low temperature air-cooler 2, high temperature air-cooler 3, control box 4, freon solenoid valve 5, shell and tube condenser 6, piston compressor 7, freon thermal expansion valve 8, pressure controller 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the energy balance device of the refrigerating and freezing equipment for ships comprises a refrigeration cycle system and an energy regulation system; the refrigeration cycle system comprises a control box 4, a piston compressor 7, a shell-and-tube condenser 6 and two sets of air coolers, wherein the piston compressor 7, the shell-and-tube condenser 6 and the two sets of air coolers are connected through pipelines; the two sets of air coolers are respectively arranged in the two cold storages; a pressure sensor is connected above the piston compressor 7, the piston compressor 7 is connected with the top end of the shell-and-tube condenser 6, the electromagnetic valve and the thermostatic expansion valve are connected in parallel to form a group, and the bottom end of the shell-and-tube condenser 6 is connected with one end of the electromagnetic valve and the thermostatic expansion valve which are connected in parallel; the other end of the parallel group of the electromagnetic valve and the force expansion valve is connected with a high-temperature air cooler 3, the high-temperature air cooler 3 is connected with a low-temperature air cooler 2, and the low-temperature air cooler 2 is connected with one end of a piston compressor 7 to form a cycle; the energy regulating system comprises a Freon electromagnetic valve 5, a Freon thermostatic expansion valve 8, a check valve 1 and a pressure controller 9; the pressure controller 9 is connected in series between the low-temperature air cooler 2 and the piston compressor 7 through a pipeline; one end of the Freon electromagnetic valve 5 is communicated with a pipeline between the shell-and-tube condenser 6 and the high-temperature air cooler 3; the other end of the Freon electromagnetic valve 5 is connected with one end of a Freon thermostatic expansion valve 8 in series through a pipeline; the other end of the Freon thermostatic expansion valve 8 is communicated with a pipeline between the shell-and-tube condenser 6 and the high-temperature air cooler 3; the check valve 1 is connected in series between the low-temperature air cooler 2 and the pressure controller 9 through a pipeline; the Freon electromagnetic valve 5 and the pressure controller 9 are respectively electrically connected with the control box 4.

When the air-cooled refrigeration system is used, high-temperature and high-pressure gas refrigerant coming out of the piston compressor 7 enters the shell-and-tube condenser 6, is changed into medium-temperature and high-pressure refrigerant liquid after exchanging heat with cooling seawater in the shell-and-tube condenser 6, enters the high-temperature air cooler 3 and the low-temperature air cooler 2 after passing through the thermal expansion valve, exchanges heat with air in a refrigeration house in the high-temperature air cooler 3 and the low-temperature air cooler 2, absorbs heat, is changed into low-temperature and low-pressure refrigerant gas, and returns to the piston compressor; when the temperature of any one of the storages reaches a set value, the electromagnetic valve for supplying liquid to the storages is closed, the pressure of the refrigerating system pipeline changes, the pressure controller 9 of the energy balance system sends a signal, the control box 4 controls the Freon electromagnetic valve 5 of the energy balance system to be opened, the Freon thermostatic expansion valve 8 starts to work and adjusts the flow of Freon in the pipeline, part of Freon is directly evaporated, and the flow of refrigerant is automatically adjusted through the temperature sensing bag arranged on the pipeline, so that the flow of refrigerant in the whole pipeline system is ensured, and the normal operation of the system is ensured; when the temperatures of the two banks reach the set value, the liquid supply electromagnetic valves of the air coolers are all closed, the Freon electromagnetic valve 5 for supplying liquid to the energy balance system is also closed, the Freon thermostatic expansion valve 8 stops working, and the unit enters a standby state. When any warehouse temperature reaches a starting set value, the unit is started, and the cycle is repeated again; the system adopts environment-friendly refrigerant R404A for refrigeration, and a control box 4 controls the operation of the whole system.

The design of the invention adds an energy balancing device in the system of the conventional refrigerating and freezing device, which can ensure that the energy adjusting device is automatically started when the temperature of one storehouse reaches the set requirement, and the normal operation of the compressor is ensured. The two storehouses can be simultaneously refrigerated by one compressor, the unit only needs one compressor for standby, the whole system is simple in structure, and the investment cost is greatly reduced.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention 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 of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.