CN201297794Y

CN201297794Y - Refrigerating device of center air conditioner for ship

Info

Publication number: CN201297794Y
Application number: CNU2008201807978U
Authority: CN
Inventors: 毛振祥; 毛慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-05
Filing date: 2008-12-05
Publication date: 2009-08-26
Anticipated expiration: 2018-12-05

Abstract

The utility model relates to a refrigerating device of a center air conditioner for a ship, which comprises two compressors, a condenser, two expansion valves, an evaporator and a centralized-control system, wherein the compressors, the condenser, the expansion valves and the evaporator form a cooling cycle system, the evaporator is connected with the condenser by the installed expansion valves, an electromagnetic valve and a filter, and the compressors are connected with the evaporator by an oil storing bottle and a suction filter.

Description

The ship central air-conditioning refrigeration plant

Technical field

The utility model relates to a kind of central air-conditioning refrigerating plant, particularly relates to a kind of air-conditioning refrigeration plant that is applied to boats and ships.

Background technology

The ship central air-conditioning refrigeration plant is because the complexity of its work running environment, machine loading quantity on illumination during for example marine operation the, the temperature of seawater and the ship, ship's staff's quantity difference, performance during to central air-conditioning work all can have influence in various degree, when riding the sea for a long time in addition, because seawater is to the corrosion of boats and ships metal parts, cause the damage of boats and ships work unit easily, Fu Za running environment is to the service behaviour of boats and ships central air-conditioning day by day, stable, the comfortable everyway that waits has proposed challenge.Existing marine air conditioning refrigerating plant automatically, is manually being received liquid; regulate compressors; all there is weak point in fault alarm; can not accomplish to receive automatically liquid and shut down, carry out the energy adjustment of cold-producing medium and can not distinguish the low pressure shutdown and shutdown of fault low pressure and warning according to the compressor operating situation.

Summary of the invention

The purpose of this utility model is to improve above-mentioned deficiency of the prior art and provides a kind of refrigeration performance stable, erosion-resisting ship central air-conditioning refrigeration plant.

The purpose of this utility model reaches by following measure:

It comprises two compressors, condenser, two expansion valves, evaporimeter and central control device; Described compressor, condenser, expansion valve, evaporimeter constitute a cooling cycle system, are connected with filter, liquid visor, magnetic valve, expansion valve in turn by pipeline between condenser and evaporimeter; Be connected with an oil eliminator by pipeline between compressor and condenser, in order to separated oil and cold-producing medium, this oil eliminator also is connected with an oil storage bottle by pipeline and a control valve is got back to compressor simultaneously; In order to ensure the oil pressure operate as normal, described oil storage bottle is by a pipeline filter in parallel and constant pressure valve, and the oil level device of connecting is then got back to compressor; The water inlet of described condenser is provided with hydraulic controller, and described hydraulic controller comprises measuring instrument and seawater gas-liquid bottle, and described measuring instrument is connected the top of seawater gas-liquid bottle, and the bottom of described seawater gas-liquid bottle is communicated with the sea intake of condenser.Between evaporimeter and compressor, be connected with an air-breathing filter by pipeline, the air inlet of this air-breathing filter is connected with control valve on the oil storage bottle.

Described central control device comprises: low pressure is shut down primary circuit, and low voltage failure stopping alarm system, auto-manual are received liquid shutdown system, synchronous liquid-supplying system, automatic energy regulating system.

Advantage of the present utility model is: because the present invention has added centralized control system, can make boats and ships realize reporting to the police when breaking down and shutdown, can carry out automatically, manually receive liquid, and carry out energy adjustment according to compressor.

Description of drawings

Fig. 1: ship central air-conditioning refrigeration plant systematic schematic diagram;

Fig. 2: ship central air-conditioning refrigeration plant low pressure is shut down primary circuit;

Fig. 3: ship central air-conditioning refrigeration plant low voltage failure stopping alarm device;

Fig. 4: ship central air-conditioning refrigeration plant auto-manual is received the liquid arresting gear;

Fig. 5: the automatic energy conditioner of ship central air-conditioning refrigeration plant;

The specific embodiment

As shown in Figure 1, the ship central air-conditioning refrigeration plant comprises compressor 1 and compressor 2, condenser 3, expansion valve 4, evaporimeter 5.Constituting pipelines by expansion valve 4, magnetic valve 6, liquid visor 7, filter 8 between condenser 3 and the evaporimeter 5 is connected.Condenser 3 is provided with a safety valve 31, and expansion valve 4 is connected to expansion valve 4-1, the magnetic valve 6-1 that is connected successively with the two ends of magnetic valve 6.

Be respectively equipped with one on compressor 1 and the compressor 2 and can transfer valve 1-1, oil level device 1-2, can transfer valve 2-1, oil level device 2-2, on compressor 1,2 and pipeline that oil eliminator is connected, be provided with a pressure controller 11, be used for the pressure of process of refrigerastion circulation line is controlled.

The ship central aircondition also comprises the oil pressure safeguards system of energy nonstick system of control cooling system oil level, and described oil pressure safeguards system comprises oil level device 1-2, the 2-2 that links to each other respectively with compressor 1,2, filter 10 and the oil storage bottle 9 that links to each other with filter 10.Be connected to a constant pressure valve 12 at the two ends of filter 10, be connected with an oil eliminator 13 between compressor 1,2 and the oil storage bottle 9, be used for separated oil and cold-producing medium.Oil storage bottle 9 is provided with a control valve 9-1, is used to regulate the flow of machine oil.Pipeline between compressor 1,2 and the evaporimeter 5 is provided with an air-breathing filter 14, and the air inlet of air-breathing filter 14 is connected with control valve 9-1 on the oil storage bottle 9.

The water inlet of described condenser 3 is provided with hydraulic controller, and described hydraulic controller comprises seawater gas-liquid bottle 15 and measuring instrument 16, and described measuring instrument 16 is connected the top of seawater gas-liquid bottle 15, and the bottom of described seawater gas-liquid bottle 15 is communicated with the sea intake of condenser 3.

The ship central air-conditioning refrigeration plant also is provided with central control device, comprises low pressure shutdown primary circuit, low voltage failure stopping alarm system, auto-manual receipts liquid shutdown system, synchronous liquid-supplying system, automatic energy regulating system.

As shown in Figure 2; low pressure is shut down in the primary circuit device; the normally opened contact of the normally-closed contact series contactor KM1 of relay KR 2, the closed contact of switch S A7, the normally opened contact of the normally-closed contact SRE KA5 of relay KR 2, the normally opened contact of votage control switch SPL1.Be controlled at work under certain cryogenic temperature by temperature controller ST1 during the refrigeration machine refrigeration; when dropping to needed temperature; temperature controller ST1 action; with closed electromagnetic valve, compressor just can autostop, when temperature rises to required temperature; temperature controller ST1 action; magnetic valve is opened, and compressor starts work again, freezes.

As shown in Figure 3, in the low voltage failure stopping alarm device, the normally-closed contact of switch DP2 serial connection relay K A13 is to the closed contact of switch S A3; The normally opened contact of the normally-closed contact of the normally opened contact serial connection votage control switch SPL2 of relay K A5, the normally-closed contact of relay K M3, relay K A5 is to relay K A17, and lamp HL1 is attempted by the two ends of relay K A17; The normally opened contact, the relay K A14 that are connected in series delayer KT4 behind the normally opened contact of the normally opened contact serial connection votage control switch SPL2 of relay K A5 respectively are connected to the closed contact of switch S A3.Refrigeration machine can detect the low voltage failure of refrigeration constantly, and can provide alarm signal in process of refrigerastion, and refrigeration machine is out of service simultaneously.

As shown in Figure 4, auto-manual is received in the liquid arresting gear, and the closed contact of refrigeration machine switch S A2 is connected in series the temperature control electricity respectively and shows the normally opened contact of device RT1, the closed contact of temperature debug switch SA8.Refrigeration machine switch S A2 is provided with third gear; start to operation shelves, receipts fluorine shut down to orderly closedown shelves, emergency stop switch shelves; in the process of refrigerastion; pressure in the pressure controller induction circulation line, when hypotony, closed electromagnetic valve; fluorine is received in beginning automatically; if select the emergency stop switch shelves, can be when accident take place, do not receive under the situation of fluorine and can shut down yet.

As shown in Figure 5, liquid-supplying system constitutes an energy adjustment and synchronous liquid feed device with automatic energy regulating system synchronously.During refrigeration plant work, by power transformer output power supply, when the refrigeration switch closed, refrigeration plant was in refrigerating state.Refrigeration plant is furnished with two work units, during unit 1 work, energy adjustment switch S A4 connects, the energy adjustment electricity shows device RT1 work, measure the cold machine start and stop of return air temperature nonstick system of control, the liquid supply electromagnetic valve YV4 that feed flow relay 1KA15 drives regulates the flow of cold-producing medium according to the demand of cryogenic temperature; During unit 2 work, energy adjustment switch S A5 connects, and the energy adjustment electricity shows device RT2 work, measures the cold machine start and stop of return air temperature nonstick system of control, and No. two liquid supply electromagnetic valve YV5 that feed flow relay K A16 drives regulate the flow of cold-producing medium according to the demand of cryogenic temperature; When unit 1 and 2 was worked simultaneously, No. one and No. two liquid supply electromagnetic valves were worked simultaneously, made refrigerant flow strengthen, and can accomplish and the synchronous feed flow of compressor energy.

Claims

1, ship central air-conditioning refrigeration plant is characterized in that: comprise two compressors, condenser, two expansion valves, evaporimeter and central control device; Described compressor, condenser, expansion valve, evaporimeter constitute a cooling cycle system, are connected with filter, liquid visor, magnetic valve, expansion valve in turn by pipeline between condenser and evaporimeter; Be connected with an oil eliminator by pipeline between compressor and condenser, in order to separated oil and cold-producing medium, this oil eliminator also is connected with an oil storage bottle by pipeline and a control valve is got back to compressor simultaneously; In order to ensure the oil pressure operate as normal, described oil storage bottle is by a pipeline filter in parallel and constant pressure valve, and the oil level device of connecting is then got back to compressor; Between evaporimeter and compressor, be connected with an air-breathing filter by pipeline, the air inlet of this air-breathing filter is connected with control valve on the oil storage bottle;

Described central control device comprises: low pressure is shut down the primary circuit device, and low voltage failure stopping alarm device, auto-manual are received liquid arresting gear, synchronous liquid feed device, automatic energy conditioner.

2, ship central air-conditioning refrigeration plant according to claim 1, it is characterized in that: the water inlet of described condenser is provided with hydraulic controller, described hydraulic controller comprises measuring instrument and seawater gas-liquid bottle, described measuring instrument is connected the top of seawater gas-liquid bottle, and the bottom of described seawater gas-liquid bottle is communicated with the sea intake of condenser.