An energy-saving air conditioning system for offshore oil platforms

Abstract

The present invention belongs to the technical field of offshore platform air conditioning systems, and specifically relates to an offshore oil platform energy-saving air conditioning system, including a hot water type lithium bromide air conditioning system and an air conditioning remote control system; the hot water type lithium bromide central air conditioner is connected to the combined air conditioning box A and the combined air conditioning box B through a chilled water pipeline, and the hot water type lithium bromide central air conditioner is simultaneously connected to the combined air conditioning box A and the waste heat boiler through a heating pipeline, and a flue gas heat exchange plate is arranged between the waste heat boiler and the branch of the heating pipeline, and the hot water type lithium bromide central air conditioner is connected to the plate heat exchanger through a cooling water pipeline, and the plate heat exchanger performs heat exchange with seawater through a seawater pipeline. The unique and efficient heat exchanger design and compressor design in the system of the present invention greatly reduce energy consumption, while alleviating the problem of refrigerant pollution, and has the ability to be used in a low temperature environment, and is also equipped with a remote control system.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioning systems for offshore platforms, and particularly relates to an energy-saving air conditioning system for offshore oil platforms. Background Art

[0002] The air conditioning system of an offshore oil platform is a key facility to ensure the normal operation of the platform and a comfortable working environment for the staff. The air conditioning equipment on the offshore oil platform is directly installed on each platform floor without a protective layer and is constantly exposed to strong sea winds and waves. Therefore, it has extremely high requirements for anti-corrosion and protection levels; there may be potential explosion risks in some areas of the offshore oil platform, so the application environment of the air conditioning equipment should have explosion-proof characteristics.

[0003] Problems existing in the prior art:

[0004] Air conditioning energy consumption level problem: The platform is currently using marine air conditioners, with the COP value ranging from a minimum of 1.76 to a maximum of 2.74, and the energy consumption level is basically below level 3, which does not meet the latest energy efficiency standards; the heating of the living quarters still uses the traditional high-energy-consuming electric heating mode;

[0005] Winter low-pressure alarm problem: When the condensing pressure is too low, the pressure difference before and after the expansion valve is too small, the capacity of the expansion valve decreases, resulting in insufficient liquid supply capacity, lack of liquid in the evaporator, and a significant drop in the refrigeration capacity of the system, thus causing faults in the refrigeration system, such as frequent low-pressure alarms or low suction pressure alarms in the refrigeration device;

[0006] Lack of air conditioning centralized control problem: The marine air conditioners currently used on the platform do not have remote communication functions, and the operation status of the air conditioners in key rooms requires a large number of on-site inspections to determine whether the units are normal;

[0007] Refrigerant pollution problem: There are still a large number of air conditioner units using refrigerant R22 on the platform. As is well known, refrigerant R22 damages the ozone layer, exacerbates climate change, and is gradually being phased out. Summary of the Invention

[0008] The purpose of the present invention is to provide an energy-saving air conditioning system for offshore oil platforms, which can greatly reduce energy consumption, alleviate the refrigerant pollution problem at the same time, have the ability to be applied in low-temperature environments, and be equipped with a remote control system.

[0009] The technical solutions adopted by the present invention are specifically as follows:

[0010] An energy-saving air conditioning system for offshore oil platforms, comprising: a hot water type lithium bromide air conditioning system and an air conditioning remote control system;

[0011] The hot water type lithium bromide air conditioning system is composed of a hot water type lithium bromide central air conditioner, a modular air handling unit A, a modular air handling unit B, a waste heat boiler, a constant pressure make-up water device, a plate heat exchanger, and a pipeline system for connecting each component. The hot water type lithium bromide central air conditioner is connected to the modular air handling unit A and the modular air handling unit B through a chilled water pipeline. The hot water type lithium bromide central air conditioner is also connected to the modular air handling unit A and the waste heat boiler through a heating pipeline, and a flue gas heat exchange plate is arranged between the waste heat boiler and a branch of the heating pipeline. The hot water type lithium bromide central air conditioner is connected to the plate heat exchanger through a cooling water pipeline, and the plate heat exchanger exchanges heat with seawater through a seawater pipeline. One of the constant pressure make-up water devices is connected to the chilled water return pipeline and the cooling water return pipeline, and the other constant pressure make-up water device is connected to the heating return pipeline;

[0012] The hot water type lithium bromide central air conditioner utilizes waste heat resources and uses the characteristic that the boiling point of water becomes lower under high vacuum conditions to refrigerate;

[0013] Through the enthalpy-increasing gas replenishing circuit in the air source heat pump unit, in cooperation with the liquid receiver - flash tank and compressor one, by using the entry of steam, the original single-stage compression process is divided into a quasi-two-stage compression process;

[0014] The fluorine pump air conditioning unit performs temperature regulation operations through the cooperation of a fluorine pump and compressor two;

[0015] An air conditioning centralized control platform is provided through the air conditioning remote control system.

[0016] The hot water type lithium bromide central air conditioner is composed of a lithium bromide air conditioning unit and a water-cooled - chiller unit;

[0017] The lithium bromide air conditioning unit uses water as the refrigerant and an aqueous lithium bromide solution as the absorbent. The lithium bromide air conditioning unit is composed of a condenser one, an evaporator one, an absorber, a circulation pump, and a steam generator arranged in this way on the refrigerant circuit. Among them, a throttle valve one is arranged on the connecting pipeline between the condenser one and the evaporator one. An absorption pipe and a heat exchanger are simultaneously arranged inside the absorber. The absorption pipe is connected to the steam generator through a pipeline and a throttle valve two is arranged on the pipeline. The heat exchanger is connected to the water-cooled - chiller unit.

[0018] The water-cooled - chiller unit includes a chiller and a magnetic levitation compressor. A rotor shaft is rotationally assembled inside the magnetic levitation compressor. Two impellers are fixedly installed at one end of the rotor shaft. A rotor is installed at the other end of the rotor shaft. A DC synchronous motor is arranged in the middle of the rotor shaft. Front bearings and rear bearings are respectively sleeved at both ends of the rotor shaft. Position sensors are arranged on one side of each of the front bearings and the rear bearings, and electromagnetic coils are arranged on the other side of each of the front bearings and the rear bearings. Thrust bearings are arranged on both sides of the rotor.

[0019] The combined air handling unit A consists of an air source heat pump unit;

[0020] The air source heat pump unit consists of an evaporator II, a liquid receiver - flash tank, a filter I, a condenser II, and a compressor I arranged in this order on the refrigerant circuit. Among them, an expansion valve I is provided on the connecting pipeline between the evaporator II and the liquid receiver - flash tank, and an expansion valve II is provided on the connecting pipeline between the liquid receiver - flash tank and the filter I.

[0021] The compressor I includes a top body located at the top. A top scroll plate is fixedly provided at the bottom of the top body. An air inlet communicating with the edge of the top scroll plate is provided on one side of the outer wall of the top body, and an exhaust port communicating with the center of the top scroll plate is provided on one side of the outer wall of the top body. A steam injection port is provided on the outer wall of the top of the top body. The liquid receiver - flash tank is connected to the steam injection port through a pipeline, and a solenoid valve I is provided on the pipeline.

[0022] A steam pipe is installed inside the top body. One end of the steam pipe is connected to the steam injection port, and the other end of the steam pipe is connected to a nozzle, and the nozzle is fixedly installed on the top of the top scroll plate. Check valves are installed at one end of the steam pipe close to the nozzle.

[0023] The combined air handling unit B consists of a fluorine pump air conditioning unit;

[0024] The fluorine pump air conditioning unit consists of a condenser III, a liquid storage tank, a fluorine pump, a filter II, an evaporator III, and a compressor II arranged in this order on the refrigerant circuit. Among them, an expansion valve III is provided on the connecting pipeline between the filter II and the evaporator III. A check valve I is provided in parallel in the pipeline where the fluorine pump is located, a solenoid valve II is provided in parallel in the pipeline where the expansion valve III is located, and a check valve II is provided in parallel in the pipeline where the compressor II is located.

[0025] Inside the air conditioner remote control system, a monitoring center unit, an equipment control interface unit, an equipment status information unit, an equipment control unit, an information analysis unit, and a maintenance and warning unit are provided.

[0026] Among them, inside the equipment status information unit, a mode information unit, a temperature status unit, a temperature setting unit, an energy consumption information unit, and a fault information recording unit are provided;

[0027] Inside the equipment control unit, a status control unit, a mode adjustment unit, a temperature adjustment unit, and a function setting unit are provided.

[0028] Inside the information analysis unit, a historical data integration unit and an icon generation unit are provided;

[0029] The maintenance and early warning unit is internally provided with a danger alarm unit, a trend analysis unit and a preventive suggestion generation unit.

[0030] The technical effects achieved by the present invention are:

[0031] The present invention makes full use of the waste heat resources of the waste heat boiler through the hot water type lithium bromide air conditioning system. The exhaust temperature and exhaust volume of the waste heat boiler determine the amount of hot water, and the hot water temperature and flow rate determine the cooling capacity of the unit. The temperature is precisely controlled. The unique and efficient heat exchanger design in the system greatly reduces energy consumption. In addition, seawater is used in conjunction with a plate heat exchanger to cool fresh water. The fresh water cooling unit is closed-loop, reducing the risk of host dirty blockage and maintenance workload.

[0032] The present invention adopts a magnetic levitation compressor and uses magnetic bearings. The system has no lubricating oil, and there is no heat exchange barrier of the oil film. The energy efficiency does not decay during long-term operation. At the same time, the subsequent maintenance cost is ultra-low, saving maintenance costs. The unique DC permanent magnet synchronous direct drive frequency conversion technology and the two-stage impeller design make the IPLV of the unit as high as 12.8. At the same time, it can quickly start within 30 seconds after power failure. The low current also has great advantages, which not only reduces the capacity of electrical appliances and reduces the impact on the power grid, but also the unit runs smoothly and has low noise, achieving the lowest operating cost throughout its life cycle.

[0033] The compressor used in the air source heat pump unit of the present invention utilizes the jet enthalpy increase technology and optimizes the medium-pressure refrigerant injection technology. The principle is to inhale a portion of the intermediate pressure gas, mix it with the partially compressed refrigerant and then compress it, so as to achieve two-stage compression with a single compressor, increase the refrigerant flow in the condenser, and increase the enthalpy difference of the main circulation loop, thereby greatly improving the efficiency of the compressor and further optimizing the energy-saving effect of the overall system.

[0034] The present invention uses a lithium bromide air conditioning unit, water as a refrigerant, lithium bromide aqueous solution as an absorbent, and uses the characteristic that the boiling point of water decreases under a high vacuum state to perform refrigeration, thereby changing the use of traditional refrigerants and alleviating the problem of refrigerant pollution.

[0035] The fluorine pump air conditioner unit used in the present invention has three working modes. In the fluorine pump operation mode, it can be used under low temperature conditions outdoors. Its energy efficiency is much higher than that of the compressor operation mode, which greatly saves the power consumption of air conditioning and refrigeration in the electrical room and solves the low-pressure alarm problem in winter.

[0036] The present invention realizes the functions of zoning control, real-time detection, remote start and stop, energy consumption statistics, etc. of the platform air conditioner through the air conditioner remote control system, which can greatly reduce the workload of on-site personnel. Brief Description of the Figures

[0037] Figure 1It is a simplified application diagram of the hot water type lithium bromide air conditioning system provided by the embodiments of the present invention;

[0038] Figure 2 It is a simplified composition diagram of the lithium bromide air conditioning unit provided by the embodiments of the present invention;

[0039] Figure 3 It is a structural diagram of the water-cooled chiller provided by the embodiments of the present invention;

[0040] Figure 4 It is a sectional structural diagram of the magnetic levitation compressor provided by the embodiments of the present invention;

[0041] Figure 5 It is a simplified composition structural diagram of the rotor shaft provided by the embodiments of the present invention;

[0042] Figure 6 It is a simplified composition diagram of the air source heat pump unit provided by the embodiments of the present invention;

[0043] Figure 7 It is a disassembled bottom view of the structure of Compressor 1 provided by the embodiments of the present invention;

[0044] Figure 8 It is a sectional structural diagram of the top body provided by the embodiments of the present invention;

[0045] Figure 9 It is a simplified composition diagram of the fluorine pump air conditioning unit provided by the embodiments of the present invention;

[0046] Figure 10 It is a system composition diagram of the air conditioning remote control system provided by the embodiments of the present invention.

[0047] In the drawings, the list of components represented by each reference numeral is as follows:

[0048] 1. Hot water type lithium bromide air conditioning system; 2. Hot water type lithium bromide central air conditioner; 21. Lithium bromide air conditioning unit; 211. First condenser; 212. First throttle valve; 213. First evaporator; 214. Absorber; 215. Circulation pump; 216. Steam generator; 217. Absorption tube; 218. Second throttle valve; 22. Water-cooled - chiller unit; 221. Chiller; 222. Magnetic levitation compressor; 223. Rotor shaft; 224. Impeller; 225. DC synchronous motor; 226. Rotor; 227. Position sensor; 228. Front bearing; 229. Electromagnetic coil; 2210. Rear bearing; 2211. Thrust bearing; 3. Combined air handling unit A; 31. Air source heat pump unit; 311. Second evaporator; 312. Accumulator - flash tank; 313. First filter; 314. First expansion valve; 315. Second expansion valve; 316. Second condenser; 317. First compressor; 318. First solenoid valve; 319. Top housing; 3110. Top scroll plate; 3111. Exhaust port; 3112. Intake port; 3113. Steam injection port; 3114. Steam pipe; 3115. Nozzle; 3116. Check valve; 4. Combined air handling unit B; 41. Fluorine pump air conditioning unit; 411. Third condenser; 412. Liquid storage tank; 413. Fluorine pump; 414. First check valve; 415. Second filter; 416. Third evaporator; 417. Third expansion valve; 418. Second compressor; 419. Second check valve; 420. Second solenoid valve; 5. Waste heat boiler; 6. Constant pressure make-up water device; 7. Plate heat exchanger; 8. Air conditioner remote control system; 801. Monitoring center unit; 802. Equipment control interface unit; 803. Equipment status information unit; 804. Equipment control unit; 805. Information analysis unit; 806. Maintenance and warning unit; 807. Mode information unit; 808. Temperature status unit; 809. Temperature setting unit; 810. Energy consumption information unit; 811. Fault information recording unit; 812. Status control unit; 813. Mode adjustment unit; 814. Temperature adjustment unit; 815. Function setting unit; 816. Historical data integration unit; 817. Icon generation unit; 818. Danger alarm unit; 819. Trend analysis unit; 820. Prevention suggestion generation unit. Detailed implementation manners

[0049] In order to make the objectives and advantages of the present invention more clear and understandable, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection specifically claimed by the present invention.

[0050] As Figures 1-10As shown in the figure, an energy-saving air-conditioning system for an offshore oil platform includes: a hot-water lithium bromide air-conditioning system 1 and an air-conditioning remote control system 8; the hot-water lithium bromide air-conditioning system 1 is composed of a hot-water lithium bromide central air-conditioning 2, a combined air-conditioning box A 3, a combined air-conditioning box B 4, a waste heat boiler 5, a constant pressure water supply device 6, a plate heat exchanger 7, and a pipeline system for connecting each component. The hot-water lithium bromide central air-conditioning 2 is connected to the combined air-conditioning box A 3 and the combined air-conditioning box B 4 through a chilled water pipeline, and the hot-water lithium bromide central air-conditioning 2 is also connected to the combined air-conditioning box A 3 and the waste heat boiler 5 through a heating pipeline. A flue gas heat exchange plate is arranged between the waste heat boiler 5 and the branch of the heating pipeline. The hot-water lithium bromide central air-conditioning 2 is connected to the plate heat exchanger 7 through a cooling water pipeline, and the plate heat exchanger 7 exchanges heat with seawater through a seawater pipeline. One constant pressure water supply device 6 is connected to the chilled water return pipeline and the cooling water return pipeline, and the other constant pressure water supply device 6 is connected to the heating return pipeline.

[0051] According to the above structure, referring to the Figure 1 air-conditioning system diagram attached, the waste heat boiler 5 is used in cooperation with the flue gas heat exchange plate to replace hot water in the heating pipeline. The hot-water lithium bromide central air-conditioning 2 is adopted, and the unit generates chilled water at 7°C - 12°C. The chilled water is transported to the cold users through a pump set, and in winter, hot medium water at 55°C is transported. In addition, seawater is used in cooperation with the plate heat exchanger 7 to cool fresh water. The way of cooling the fresh water unit is a closed cycle, reducing the risk of fouling of the main engine and the maintenance workload. Through the above process, waste heat resources are fully utilized. The exhaust gas temperature and exhaust gas volume of the waste heat boiler determine the amount of hot water, and the hot water temperature and flow rate in turn determine the refrigerating capacity of the unit, precisely regulating the temperature. The unique and efficient heat exchanger design in the system greatly reduces energy consumption.

[0052] Embodiment 1:

[0053] Referring to the Figures 1-2 attachment, the hot-water lithium bromide central air-conditioning 2 is composed of a lithium bromide air-conditioning unit 21 and a water-cooled chiller 22;

[0054] The lithium bromide air-conditioning unit 21 uses water as the refrigerant and an aqueous lithium bromide solution as the absorbent. The lithium bromide air-conditioning unit 21 is composed of a condenser 1 211, an evaporator 1 213, an absorber 214, a circulation pump 215, and a steam generator 216 arranged on the refrigerant circuit in this way. Among them, a throttle valve 1 212 is arranged on the connecting pipeline between the condenser 1 211 and the evaporator 1 213. An absorption tube 217 and a heat exchanger are simultaneously arranged inside the absorber 214. The absorption tube 217 is connected to the steam generator 216 through a pipeline, and a throttle valve 2 218 is arranged on the pipeline. The heat exchanger is connected to the water-cooled chiller 22.

[0055] According to the above structure, in a high-vacuum state, a lithium bromide absorption chiller uses water as the refrigerant and an aqueous lithium bromide solution as the absorbent. It utilizes the characteristic that the boiling point of water becomes lower (only 4 degrees Celsius) in a high-vacuum state to refrigerate (utilizing the latent heat of vaporization of water), producing low-temperature water above 5°C. The specific process is as follows: The aqueous lithium bromide solution is heated by hot water or other waste heat sources in the steam generator 216. As the water in the solution continuously vaporizes, the concentration of the aqueous lithium bromide solution in the generator continuously increases and enters the absorber 214, while the water vapor enters the first condenser 211 and is condensed after being cooled by the cooling water in the first condenser 211, becoming high-pressure and low-temperature liquid water. When the water in the first condenser 211 enters the first evaporator 213 through the throttle valve 212, it expands rapidly and vaporizes, and absorbs a large amount of heat from the chilled water in the first evaporator 213 during the vaporization process, thus achieving the purpose of cooling. During this process, the low-temperature water vapor enters the absorber 214 and is absorbed by the aqueous lithium bromide solution in the absorber 214, and the solution concentration gradually decreases, and then is sent back to the generator by the circulation pump 215 to complete the entire cycle.

[0056] Referring to the attached Figures 3-5 , the water-cooled chiller 22 includes a chiller 221 and a magnetic levitation compressor 222. Inside the magnetic levitation compressor 222, a rotor shaft 223 is rotationally assembled. At one end of the rotor shaft 223, two impellers 224 are fixedly installed. At the other end of the rotor shaft 223, a rotor 226 is installed. A DC synchronous motor 225 is provided in the middle of the rotor shaft 223. Front bearings 228 and rear bearings 2210 are respectively sleeved at both ends of the rotor shaft 223. Position sensors 227 are provided on one side of both the front bearing 228 and the rear bearing 2210, and electromagnetic coils 229 are provided on the other side of both the front bearing 228 and the rear bearing 2210. Thrust bearings 2211 are provided on both sides of the rotor 226.

[0057] According to the above structure, the magnetic levitation compressor 222 adopts magnetic bearings. The system has no lubricating oil, there is no heat transfer obstruction of the oil film, the energy efficiency does not decay during long-term operation, and at the same time, the later maintenance cost is extremely low, saving maintenance costs. The unique DC permanent magnet synchronous direct drive frequency conversion technology and the two-stage impeller design make the IPLV of this unit as high as 12.8. At the same time, it can be quickly started within 30 seconds after power failure recovery, and the starting current as low as 2A also has great advantages. It not only reduces the electrical capacity and the impact on the power grid, but also the unit operates smoothly with low noise, achieving the lowest life-cycle operation cost.

[0058] The working principle of the present invention is as follows: After the lithium bromide aqueous solution is heated by the heating medium water or other waste heat sources in the steam generator 216, the water in the solution continuously vaporizes. As the water continuously vaporizes, the concentration of the lithium bromide aqueous solution in the generator continuously increases and enters the absorber 214, while the water vapor enters the first condenser 211 and condenses after being cooled by the cooling water in the first condenser 211, becoming high-pressure and low-temperature liquid water. When the water in the first condenser 211 enters the first evaporator 213 through the throttle valve 212, it expands rapidly and vaporizes, and absorbs a large amount of heat of the chilled water in the first evaporator 213 during the vaporization process, thereby achieving the purpose of cooling and refrigeration. During this process, the low-temperature water vapor enters the absorber 214 and is absorbed by the lithium bromide aqueous solution in the absorber 214, and the solution concentration gradually decreases, and then is sent back to the generator by the circulation pump 215 to complete the entire cycle; during the process, the water-cooled chiller 22 can be used to provide chilled water for the heat exchanger in the absorber 214 and the first condenser 211.

[0059] Embodiment 2:

[0060] Refer to the appendix Figures 6-8 , the modular air handling unit A3 is composed of an air source heat pump unit 31;

[0061] The air source heat pump unit 31 is composed of an evaporator 311, a liquid receiver - flash tank 312, a filter 313, a condenser 316, and a compressor 317 arranged in sequence on the refrigerant circuit. Among them, an expansion valve 314 is arranged on the connecting pipeline between the evaporator 311 and the liquid receiver - flash tank 312, and an expansion valve 315 is arranged on the connecting pipeline between the liquid receiver - flash tank 312 and the filter 313;

[0062] Refer to the appendix Figures 6-8 , the compressor 317 includes a top body 319 located at the top. A top scroll disk 3110 is fixedly arranged at the bottom of the top body 319. An air inlet 3112 communicating with the edge of the top scroll disk 3110 is arranged on one side of the outer wall of the top body 319. An air outlet 3111 communicating with the center of the top scroll disk 3110 is arranged on one side of the outer wall of the top body 319. A steam injection port 3113 is arranged on the outer wall of the top of the top body 319. The liquid receiver - flash tank 312 is connected to the steam injection port 3113 through a pipeline and a solenoid valve 318 is arranged on the pipeline;

[0063] Refer to the appendix Figures 6-8 , a steam pipe 3114 is installed inside the top body 319. One end of the steam pipe 3114 is connected to the steam injection port 3113. The other end of the steam pipe 3114 is connected to a nozzle 3115, and the nozzle 3115 is fixedly installed on the top of the top scroll disk 3110. Check valves 3116 are installed at one end of the steam pipe 3114 close to the nozzle 3115.

[0064] According to the above structure, compressor 1 - 317 receives the heat absorbed by evaporator 2 - 311 from the air, starts to compress this energy, opens the jet - enhanced enthalpy gas - replenishing circuit, that is, opens solenoid valve 1 - 318. Then the steam in the liquid receiver - flash tank 312 will flow into the compressor. The part of the energy being compressed by compressor 1 - 317 is mixed with the incoming steam. This process continues until the working chamber of compressor 1 - 317 is separated from the gas - replenishing port. At this time, the steam and the energy are fully mixed to form a new energy. After the working chamber of compressor 1 - 317 is separated from the gas - replenishing port, the new energy is "second - stage" compressed. Finally, the new energy enters condenser 2 - 316 and exchanges heat with water. In the above process, compressor 1 - 317 adopts the jet - enhanced enthalpy technology and optimizes the refrigerant injection technology in the middle - pressure section. The principle is to inhale a part of the gas at the intermediate pressure, mix it with the refrigerant that has been partially compressed and then compress it, so as to achieve two - stage compression with a single compressor, increase the refrigerant flow rate in the condenser, and increase the enthalpy difference in the main circulation circuit, thereby greatly improving the efficiency of the compressor.

[0065] The working principle of the present invention is as follows: Compressor 1 - 317 receives the heat absorbed by evaporator 2 - 311 from the air, starts to compress this energy, opens the jet - enhanced enthalpy gas - replenishing circuit, that is, opens solenoid valve 1 - 318. Then the steam in the liquid receiver - flash tank 312 will flow into the compressor. The part of the energy being compressed by compressor 1 - 317 is mixed with the incoming steam. This process continues until the working chamber of compressor 1 - 317 is separated from the gas - replenishing port. At this time, the steam and the energy are fully mixed to form a new energy. After the working chamber of compressor 1 - 317 is separated from the gas - replenishing port, the new energy is "second - stage" compressed. Finally, the new energy enters condenser 2 - 316 and exchanges heat with water.

[0066] Embodiment 3:

[0067] Refer to the attached Figure 9 , the modular air handling unit B4 is composed of a fluorine - pump air - conditioning unit 41;

[0068] The fluorine - pump air - conditioning unit 41 is composed of a condenser 3 - 411, a liquid storage tank 412, a fluorine pump 413, a filter 2 - 415, an evaporator 3 - 416, and a compressor 2 - 418 which are arranged in sequence on the refrigerant circuit. Among them, an expansion valve 3 - 417 is arranged on the connecting pipeline between the filter 2 - 415 and the evaporator 3 - 416. A check valve 1 - 414 is arranged in parallel in the pipeline where the fluorine pump 413 is located. A solenoid valve 2 - 420 is arranged in parallel in the pipeline where the expansion valve 3 - 417 is located. A check valve 2 - 419 is arranged in parallel in the pipeline where the compressor 2 - 418 is located.

[0069] The working principle of the present invention is as follows: For the three working modes of the fluorine pump air-conditioning unit 41, in summer, in the operation mode of the second compressor 418, the fluorine pump refrigeration system is exactly the same as the conventional air-cooled machine room air-conditioning system. After the low-temperature and low-pressure refrigerant absorbs heat and vaporizes in the evaporator, it is compressed into high-temperature and high-pressure steam by the second compressor 418, and then enters the third condenser 411 for heat discharge. This mode corresponds to the condition of relatively high outdoor temperature; in winter, in the operation mode of the fluorine pump 413, the refrigerant pump, i.e., the fluorine pump 413, operates independently and is applied under the condition of low outdoor temperature. Its energy efficiency performance is much higher than that of the compressor operation mode, greatly saving the power consumption of air-conditioning refrigeration in the electrical room; in the transitional season, in the mixed operation mode of the second compressor 418 and the fluorine pump 413, the refrigerant pump, i.e., the fluorine pump 413 and the second compressor 418 operate together. When the outdoor temperature is relatively low in the transitional season, the energy efficiency ratio of the whole machine can be significantly improved.

[0070] Embodiment 4:

[0071] Referring to the appendix Figure 10 , inside the remote air-conditioning control system 8, there are a monitoring center unit 801, a device control interface unit 802, a device status information unit 803, a device control unit 804, an information analysis unit 805, and a maintenance and warning unit 806;

[0072] Among them, inside the device status information unit 803, there are a mode information unit 807, a temperature status unit 808, a temperature setting unit 809, an energy consumption information unit 810, and a fault information recording unit 811;

[0073] Inside the device control unit 804, there are a status control unit 812, a mode adjustment unit 813, a temperature adjustment unit 814, and a function setting unit 815;

[0074] Inside the information analysis unit 805, there are a historical data integration unit 816 and an icon generation unit 817;

[0075] Inside the maintenance and warning unit 806, there are a danger alarm unit 818, a trend analysis unit 819, and a prevention suggestion generation unit 820.

[0076] The working principle of the present invention is as follows: Through the monitoring center unit 801, the device control interface unit 802, and the device status information unit 803, the temperature and humidity of key rooms can be monitored and regulated. Through the cooperation of the device status information unit 803 and the information analysis unit 805, the energy consumption detection and power consumption statistical analysis of air-conditioning equipment can be carried out. Through the device control unit 804, the remote start / stop, temperature setting, and unit regulation of the air conditioner in key rooms such as electrical rooms can be performed. Through the maintenance and warning unit 806, the fault alarm of air-conditioning equipment and the query of alarm records can be integrated, and the trend of the device status can be analyzed through the trend analysis unit 819. Finally, prevention suggestions are generated through the prevention suggestion generation unit 820.

[0077] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. An energy-saving air conditioning system for an offshore oil platform, characterized in that: include: Hot water type lithium bromide air conditioning system (1) and air conditioning remote control system (8); The hot water type lithium bromide air conditioning system (1) comprises a hot water type lithium bromide central air conditioner (2), a combined air conditioning box A (3), a combined air conditioning box B (4), a waste heat boiler (5), a constant pressure water supply device (6), a plate heat exchanger (7), and a pipeline system for connecting the various components. The hot water type lithium bromide central air conditioner (2) is connected to the combined air conditioning box A (3) and the combined air conditioning box B (4) through a chilled water pipeline. The hot water type lithium bromide central air conditioner (2) is also connected to the combined air conditioning box A (3) and the combined air conditioning box B (4) through a heating pipeline. The combined air conditioning box A (3) and the waste heat boiler (5) are connected, and a flue gas heat exchange plate is arranged between the waste heat boiler (5) and the branch of the heating pipeline. The hot water type lithium bromide central air conditioner (2) is connected to the plate heat exchanger (7) through the cooling water pipeline, and the plate heat exchanger (7) performs heat exchange with seawater through the seawater pipeline. One of the constant pressure water supply devices (6) is connected to the chilled water return pipeline and the cooling water return pipeline, and the other constant pressure water supply device (6) is connected to the heating return pipeline. The combined air conditioning box A (3) is composed of an air source heat pump unit (31); The combined air conditioning box B (4) is composed of a fluorine pump air conditioning unit (41); Hot water type lithium bromide central air conditioner (2) uses waste heat resources and the characteristic that the boiling point of water decreases under high vacuum state to achieve cooling; By using the enthalpy-increasing air supply circuit in the air source heat pump unit (31), in conjunction with the liquid storage device-flash evaporator (312) and the compressor 1 (317), the original one-stage compression process is divided into a quasi-two-stage compression process by utilizing the entry of steam; The fluorine pump air conditioning unit (41) performs temperature regulation operation by cooperating with the fluorine pump (413) and the second compressor (418); An air conditioning centralized control platform is provided through the air conditioning remote control system (8).

2. The energy-saving air conditioning system for an offshore oil platform according to claim 1, characterized in that: The hot water type lithium bromide central air conditioner (2) is composed of a lithium bromide air conditioning unit (21) and a water-cooled chiller unit (22); The lithium bromide air conditioning unit (21) uses water as a refrigerant and a lithium bromide aqueous solution as an absorbent. The lithium bromide air conditioning unit (21) is composed of a condenser (211), an evaporator (213), an absorber (214), a circulating pump (215), and a steam generator (216) arranged on a refrigerant circuit. A throttle valve (212) is arranged on the connecting pipeline between the condenser (211) and the evaporator (213). An absorption pipe (217) and a heat exchanger are also arranged inside the absorber (214). The absorption pipe (217) and the steam generator (216) are connected via a pipeline and a throttle valve (218) is arranged on the pipeline. The heat exchanger is connected to the water-cooled chiller (22).

3. An offshore oil platform energy-saving air conditioning system according to claim 2, characterized in that: The water-cooled chiller (22) comprises a chiller (221) and a magnetic suspension compressor (222); a rotor shaft (223) is rotatably assembled inside the magnetic suspension compressor (222); two impellers (224) are fixedly mounted on one end of the rotor shaft (223); a rotor (226) is mounted on the other end of the rotor shaft (223); a DC synchronous motor (225) is disposed in the middle of the rotor shaft (223); a front bearing (228) and a rear bearing (2210) are sleeved on both ends of the rotor shaft (223); a position sensor (227) is disposed on one side of the front bearing (228) and the rear bearing (2210); an electromagnetic coil (229) is disposed on the other side of the front bearing (228) and the rear bearing (2210); and thrust bearings (2211) are disposed on both sides of the rotor (226).

4. The energy-saving air conditioning system for an offshore oil platform according to claim 1, characterized in that: The air source heat pump unit (31) is composed of an evaporator 2 (311), a liquid reservoir-flash evaporator (312), a filter 1 (313), a condenser 2 (316), and a compressor 1 (317) arranged on a refrigerant circuit, wherein an expansion valve 1 (314) is arranged on the connecting pipeline between the evaporator 2 (311) and the liquid reservoir-flash evaporator (312), and an expansion valve 2 (315) is arranged on the connecting pipeline between the liquid reservoir-flash evaporator (312) and the filter 1 (313).

5. The energy-saving air conditioning system for an offshore oil platform according to claim 4, characterized in that: Compressor 1 (317) comprises a top body (319) located at the top, a top scroll (3110) being fixedly arranged at the bottom of the top body (319), an air inlet (3112) being arranged on one side of an outer wall of the top body (319) and communicating with the edge of the top scroll (3110), an exhaust port (3111) being arranged on one side of the outer wall of the top body (319) and communicating with the center of the top scroll (3110), a steam injection port (3113) being arranged on the outer wall of the top of the top body (319), and the liquid storage-flash evaporator (312) and the steam injection port (3113) being connected via a pipeline, and a solenoid valve 1 (318) being arranged on the pipeline.

6. The energy-saving air conditioning system for an offshore oil platform according to claim 5, characterized in that: A steam pipe (3114) is installed inside the top machine body (319); one end of the steam pipe (3114) is connected to the steam injection port (3113); the other end of the steam pipe (3114) is connected to a nozzle (3115); and the nozzle (3115) is fixedly installed on the top of the top vortex disk (3110); and a check valve (3116) is installed at one end of the steam pipe (3114) close to the nozzle (3115).

7. The energy-saving air conditioning system for an offshore oil platform according to claim 1, characterized in that: The fluorine pump air conditioning unit (41) is composed of a condenser three (411), a liquid storage tank (412), a fluorine pump (413), a filter two (415), an evaporator three (416) and a compressor two (418) arranged on a refrigerant circuit, wherein an expansion valve three (417) is arranged on the connecting pipeline between the filter two (415) and the evaporator three (416), a check valve one (414) is arranged on the pipeline where the fluorine pump (413) is located in parallel, a solenoid valve two (420) is arranged on the pipeline where the expansion valve three (417) is located in parallel, and a check valve two (419) is arranged on the pipeline where the compressor two (418) is located in parallel.

8. The energy-saving air conditioning system for an offshore oil platform according to claim 1, characterized in that: The air conditioning remote control system (8) is internally provided with a monitoring center unit (801), an equipment control interface unit (802), an equipment status information unit (803), an equipment control unit (804), an information analysis unit (805) and a maintenance and early warning unit (806).

9. The energy-saving air conditioning system for an offshore oil platform according to claim 8, characterized in that: in, The device status information unit (803) is internally provided with a mode information unit (807), a temperature status unit (808), a temperature setting unit (809), an energy consumption information unit (810) and a fault information recording unit (811); The device control unit (804) is internally provided with a state control unit (812), a mode adjustment unit (813), a temperature adjustment unit (814) and a function setting unit (815).

10. The offshore oil platform energy-saving air conditioning system according to claim 9, characterized in that: The information analysis unit (805) is internally provided with a historical data integration unit (816) and an icon generation unit (817); The maintenance and early warning unit (806) is internally provided with a danger alarm unit (818), a trend analysis unit (819) and a prevention suggestion generation unit (820).

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