Marine water chiller oil fluorine separator

Abstract

The application relates to a marine water chiller oil fluorine separator, wherein a condenser is connected with a coil pipe exhaust heating interface of the oil fluorine separator through a high-pressure gaseous refrigerant pipeline and is connected with an exhaust interface of the oil fluorine separator through the high-pressure gaseous refrigerant pipeline and a high-pressure exhaust electromagnetic valve; an air suction interface of the oil fluorine separator is connected with an evaporator through a low-pressure suction electromagnetic valve and a low-pressure gaseous refrigerant pipeline; a low-pressure exhaust interface of the oil fluorine separator is connected with the evaporator through the low-pressure gaseous refrigerant pipeline; the evaporator is connected with a liquid inlet interface of the oil fluorine separator through an oil fluorine mixture pipeline and a low-pressure liquid inlet electromagnetic valve; a lubricating oil pipeline is connected with an oil tank through a one-way valve; and an electrical control box is connected with the high-pressure exhaust electromagnetic valve, the low-pressure suction electromagnetic valve and the low-pressure liquid inlet electromagnetic valve through signal lines. The application can be used for separating oil fluorine mixtures on the liquid surface of a full-liquid evaporator and improving the heat exchange effect of the full-liquid evaporator.

Description

Technical Field

[0001] This invention relates to an oil-fluorine separator for marine chiller units, specifically an oil-fluorine separator for marine centrifugal chiller units, suitable for oil-fluorine separation on the liquid surface of flooded evaporators. Background Technology

[0002] In marine chiller units, after prolonged operation, an oil-refrigerant mixture forms on the surface of the flooded evaporator, severely affecting its heat exchange efficiency. Therefore, oil-refrigerant separation is necessary. Currently, oil separators mainly include: washing type, centrifugal type, packed type, and filter type. These types of oil separators are mostly integrated into the refrigeration system and require an ejector to draw the liquid mixture of low-pressure refrigeration oil and refrigerant from the evaporator and the liquid mixture of high-pressure refrigeration oil and refrigerant from the condenser into the oil-refrigerant separator. This results in a small oil-refrigerant separation capacity, lack of energy efficiency, and inability to separate oil and refrigerant on a timed basis according to actual needs.

[0003] After prolonged operation of marine chiller units, an oil-fluorine mixture forms on the surface of the liquid in a flooded evaporator, severely affecting its heat exchange efficiency. Therefore, this invention is proposed to separate the oil-fluorine mixture from the liquid surface of a flooded evaporator, thereby improving its heat exchange performance. Summary of the Invention

[0004] The present invention provides an oil-fluorine separator for marine chiller units, used to separate the oil-fluorine mixture on the liquid surface of a flooded evaporator, thereby improving the heat exchange efficiency of the flooded evaporator.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: an oil-fluorine separator for marine chillers, comprising an electrical control box, a high-pressure exhaust solenoid valve, a low-pressure suction solenoid valve, an evaporator, a low-pressure liquid inlet solenoid valve, an oil-fluorine separator, an oil tank, and a condenser. The condenser is connected to the coil exhaust heating port of the oil-fluorine separator via a high-pressure gaseous refrigerant pipeline, and to the exhaust port of the oil-fluorine separator via a high-pressure gaseous refrigerant pipeline and the high-pressure exhaust solenoid valve. The suction port of the oil-fluorine separator is connected to the evaporator via a low-pressure suction solenoid valve and a low-pressure gaseous refrigerant pipeline. The low-pressure outlet port of the oil-fluorine separator is connected to the evaporator via a low-pressure gaseous refrigerant pipeline. The evaporator is connected to the liquid inlet port of the oil-fluorine separator via an oil-fluorine mixture pipeline and the low-pressure liquid inlet solenoid valve. The oil outlet port of the oil-fluorine separator is connected to the oil tank via a lubricating oil pipeline and a check valve. The electrical control box is connected to the high-pressure exhaust solenoid valve, the low-pressure suction solenoid valve, and the low-pressure liquid inlet solenoid valve via signal lines.

[0006] Furthermore, the oil-fluorine separator includes an oil-fluorine separator high-pressure inlet angle valve II, an oil-fluorine separator high-pressure inlet angle valve I, a connector, an oil-fluorine separator suction angle valve, a cover plate, a cylinder, an oil-fluorine separator liquid inlet angle valve, an oil-fluorine separator outlet angle valve, a base plate, a coil, an electromagnetic level gauge, and an oil-fluorine separator oil outlet angle valve. The top and bottom of the cylinder are fixedly connected to the cover plate and the base plate, respectively. A coil is installed inside the cylinder, and the oil-fluorine separator high-pressure inlet angle valve II, oil-fluorine separator oil outlet angle valve, oil-fluorine separator liquid inlet angle valve, and oil-fluorine separator outlet angle valve are installed on the side of the cylinder. The cover plate is connected to the oil-fluorine separator high-pressure inlet angle valve I and the oil-fluorine separator suction angle valve through connectors.

[0007] Furthermore, the high-pressure inlet valve II of the oil-fluorine separator is connected to the exhaust heating interface of the coil, and the outlet valve of the oil-fluorine separator is connected to the low-pressure outlet interface of the coil.

[0008] Furthermore, the cylinder is made of No. 20 carbon steel and is cylindrical in shape.

[0009] Furthermore, the cover plate and base plate are made of Q345B material.

[0010] Furthermore, the coil is made of T2 material and uses a coiled tube design, which saves space and increases the heat exchange area between the coil 13 and the oil-fluorine mixture.

[0011] A method for using an oil-fluorine separator in a marine chiller unit includes a normal operating condition and an oil discharge operating condition. In the normal operating condition, the high-pressure exhaust solenoid valve is closed, while the low-pressure intake solenoid valve and the low-pressure liquid inlet solenoid valve are open. High-temperature, high-pressure gas from the condenser exchanges heat with the oil-fluorine mixture through the coil of the oil-fluorine separator, causing the Freon in the oil-fluorine mixture to vaporize and be discharged to the evaporator through the intake port of the oil-fluorine separator. In the oil discharge operating condition, the high-pressure exhaust solenoid valve is open, while the low-pressure intake solenoid valve and the low-pressure liquid inlet solenoid valve are closed. High-temperature, high-pressure gas from the condenser pressurizes the oil separated in the lower layer of the oil-fluorine separator to the oil tank.

[0012] Furthermore, when the high-pressure exhaust solenoid valve, low-pressure intake solenoid valve, or low-pressure liquid inlet solenoid valve malfunctions, the operating conditions can be switched manually via the angle valve on the oil-fluorine separator.

[0013] The beneficial effects of this invention are:

[0014] The present invention provides a novel oil-fluorine separator for marine chillers, which has the following advantages:

[0015] (1) No ejector is needed; the oil-liquid mixture flows from the evaporator into the oil-fluorine separator by gravity.

[0016] (2) Oil-fluorine separation is performed without additional energy (such as electric heating), thereby achieving energy-saving effect.

[0017] (3) This oil-fluorine separator is an independent system with strong maintainability and low failure rate.

[0018] (4) It can separate oil at regular intervals, and the working conditions can meet manual and automatic control.

[0019] (5) High separation efficiency.

[0020] (6) It can meet the requirements of marine environments, such as tilting and swaying. Attached Figure Description

[0021] Figure 1 This is a system diagram of the oil-fluorine separator for marine chiller units according to the present invention;

[0022] Figure 2 This is a schematic diagram of an oil-fluorine separator.

[0023] In the diagram: 1—Electrical control box, 2—High-pressure exhaust solenoid valve, 3—High-pressure inlet angle valve I of oil-fluorine separator, 4—Inlet angle valve of oil-fluorine separator, 5—Low-pressure intake solenoid valve, 6—Evaporator, 7—Low-pressure liquid inlet solenoid valve, 8—Liquid inlet angle valve of oil-fluorine separator, 9—Outlet angle valve of oil-fluorine separator, 10—Oil-fluorine separator, 11—Oil outlet angle valve of oil-fluorine separator, 12—High-pressure inlet angle valve II of oil-fluorine separator, 13—Check valve, 14—Oil tank, 15—Condenser, 16—Connector, 17—Cover plate, 18—Cylinder, 19—Base plate, 20—Coil, 21—Electromagnetic level gauge. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 As shown in the figure, a novel marine chiller oil-fluorine separator proposed in this embodiment of the invention includes an electrical control box 1, a high-pressure exhaust solenoid valve 2, a high-pressure inlet angle valve I 3 for the oil-fluorine separator, an intake angle valve 4 for the oil-fluorine separator, a low-pressure intake solenoid valve 5, an evaporator 6, a low-pressure liquid inlet solenoid valve 7, a liquid inlet angle valve 8 for the oil-fluorine separator, an outlet angle valve 9 for the oil-fluorine separator, an oil-fluorine separator 10, an oil outlet angle valve 11 for the oil-fluorine separator, a high-pressure inlet angle valve II 12 for the oil-fluorine separator, a check valve 13, an oil tank 14, and a condenser 15.

[0026] The condenser 15 is connected to the exhaust (heating) port of the oil-refrigerant separator 10 via a high-pressure gaseous refrigerant line and a high-pressure inlet valve II 12 of the oil-refrigerant separator, and is also connected to the exhaust port of the oil-refrigerant separator 10 via a high-pressure gaseous refrigerant line, a high-pressure exhaust solenoid valve 2, and a high-pressure inlet valve I 3 of the oil-refrigerant separator; the suction port of the oil-refrigerant separator 10 is connected to the evaporator 6 via an oil-refrigerant separator suction valve 4, a low-pressure suction solenoid valve 5, and a low-pressure gaseous refrigerant line; the oil-refrigerant separator 10... The low-pressure gas outlet is connected to the evaporator 6 via the oil-fluorine separator outlet valve 9 and the low-pressure gaseous refrigerant pipeline; the evaporator 6 is connected to the liquid inlet via the oil-fluorine mixture pipeline and the low-pressure liquid inlet solenoid valve 7, through the oil-fluorine separator liquid inlet valve 8; the oil outlet of the oil-fluorine separator 10 is connected to the oil tank 14 via the oil-fluorine separator oil outlet valve 11 and the lubricating oil pipeline, through the check valve 13; the electrical control box 1 is connected to the high-pressure exhaust solenoid valve 2, the low-pressure suction solenoid valve 5, and the low-pressure liquid inlet solenoid valve 7 via signal lines.

[0027] The novel marine chiller unit oil-fluorine separator of this invention is divided into a normal operating condition and an oil discharge condition. In the normal operating condition, an oil discharge condition is performed once every 200 hours of operation, with each discharge lasting approximately 10 seconds. The high-pressure exhaust solenoid valve 2, the low-pressure intake solenoid valve 5, and the low-pressure liquid inlet solenoid valve 7 are controlled by an electrical control box for start / stop and operating condition switching. When the solenoid valve ( Figure 1 When items 2, 5, and 7 malfunction, the angle valve can be used ( Figure 1 (Serial numbers 3, 4, 8, 9, 11, 12) Manual control of operating conditions switching.

[0028] Under normal operating conditions, the high-pressure exhaust solenoid valve 2 is closed, while the low-pressure intake solenoid valve 5 and the low-pressure liquid inlet solenoid valve 7 are open. The high-temperature and high-pressure gas from the condenser 15 exchanges heat with the oil-fluorine mixture through the coil of the oil-fluorine separator 10, causing the Freon in the oil-fluorine mixture to vaporize and be discharged to the evaporator 6 through the intake port of the oil-fluorine separator 10.

[0029] During the oil discharge operation, the high-pressure exhaust solenoid valve 2 is opened, while the low-pressure intake solenoid valve 5 and the low-pressure liquid inlet solenoid valve 7 are closed. The high-temperature and high-pressure gas from the condenser 15 pressurizes the oil separated in the lower layer of the oil-fluorine separator 10 to the oil tank 14.

[0030] like Figure 2 As shown, the oil-fluorine separator 10 mainly includes a high-pressure inlet angle valve II 12, a high-pressure inlet angle valve I 3, a connector 16, an intake angle valve 4, a low-pressure intake solenoid valve 5, a cover plate 17, a cylinder 18, a liquid inlet angle valve 8, an outlet angle valve 9, a base plate 19, a coil 20, an electromagnetic level gauge 21, and an oil outlet angle valve 11.

[0031] The top and bottom of the cylinder 18 are fixedly connected to a cover plate 17 and a bottom plate 19, respectively. The cylinder 18 is equipped with a coil 20. The sides of the cylinder 18 are equipped with a high-pressure inlet valve II 12, an oil outlet valve 11, a liquid inlet valve 8, and an outlet valve 9. The high-pressure inlet valve II 12 is connected to the exhaust (heating) port of the coil 20, and the outlet valve 9 is connected to the low-pressure outlet port of the coil 20. The cover plate 17 is connected to the high-pressure inlet valve I 3 and the suction valve 4 via connectors 16.

[0032] The shell 18 is made of No. 20 carbon steel and is cylindrical in shape. The coil 20 is made of T2 material and uses a wound tube design, which saves space and increases the heat exchange area between the coil 20 and the oil-fluorine mixture. The cover plate 17 and the bottom plate 19 are made of Q345B material. After the oil-fluorine separator is assembled, the shell side and the tube side are subjected to airtightness tests respectively. After passing the tests, a vacuum test is performed.

Claims

1. An oil-fluorine separator for marine chiller units, characterized in that: The system includes an electrical control box, a high-pressure exhaust solenoid valve, a low-pressure suction solenoid valve, an evaporator, a low-pressure liquid inlet solenoid valve, an oil-fluorine separator, an oil tank, and a condenser. The condenser is connected to the oil-fluorine separator's coil exhaust heating port via a high-pressure gaseous refrigerant line, and to the oil-fluorine separator's exhaust port via a high-pressure gaseous refrigerant line and a high-pressure exhaust solenoid valve. The oil-fluorine separator's suction port is connected to the evaporator via a low-pressure suction solenoid valve and a low-pressure gaseous refrigerant line. The oil-fluorine separator's low-pressure outlet port is connected to the evaporator via a low-pressure gaseous refrigerant line. The evaporator is connected to the oil-fluorine separator's liquid inlet port via an oil-fluorine mixture line and a low-pressure liquid inlet solenoid valve. The oil-fluorine separator's oil outlet port is connected to the oil tank via a lubricating oil line and a check valve. The electrical control box is connected to the high-pressure exhaust solenoid valve, the low-pressure suction solenoid valve, and the low-pressure liquid inlet solenoid valve via signal lines. The oil-fluorine separator includes an oil-fluorine separator high-pressure inlet angle valve II and an oil-fluorine separator... The equipment includes a high-pressure inlet angle valve I, a connector, an oil-fluorine separator suction angle valve, a cover plate, a cylinder, an oil-fluorine separator liquid inlet angle valve, an oil-fluorine separator outlet angle valve, a base plate, a coil, an electromagnetic level gauge, and an oil-fluorine separator oil outlet angle valve. The top and bottom of the cylinder are fixedly connected to a cover plate and a base plate, respectively. A coil is installed inside the cylinder, and the sides of the cylinder are equipped with an oil-fluorine separator high-pressure inlet angle valve II, an oil-fluorine separator oil outlet angle valve, an oil-fluorine separator liquid inlet angle valve, and an oil-fluorine separator outlet angle valve. The cover plate is connected to the high-pressure inlet valve I and the suction valve of the oil-fluorine separator via connectors; the high-pressure inlet valve II of the oil-fluorine separator is connected to the exhaust port of the coil, and the exhaust valve of the oil-fluorine separator is connected to the low-pressure outlet port of the coil; the cover plate is connected to the high-pressure inlet valve I and the suction valve of the oil-fluorine separator via connectors; the coil is made of T2 material and adopts a coiled tube form, which can save space and increase the heat exchange area between the coil and the oil-fluorine mixture.

2. The marine chiller oil-fluorine separator according to claim 1, characterized in that: The high-pressure inlet valve II of the oil-fluorine separator connects to the exhaust heating interface of the coil, and the outlet valve of the oil-fluorine separator connects to the low-pressure outlet interface of the coil.

3. The marine chiller oil-fluorine separator according to claim 1, characterized in that: The cylinder is made of No. 20 carbon steel and is cylindrical in shape.

4. The marine chiller oil-fluorine separator according to claim 1, characterized in that: The cover plate and base plate are made of Q345B material.

5. A method of using the oil-fluorine separator for a marine chiller unit according to any one of claims 1-4, characterized in that: This includes normal operating conditions and oil discharge operating conditions. In normal operating conditions, the high-pressure exhaust solenoid valve is closed, while the low-pressure intake solenoid valve and the low-pressure liquid inlet solenoid valve are open. The high-temperature and high-pressure gas from the condenser exchanges heat with the oil-fluorine mixture through the coil of the oil-fluorine separator, causing the Freon in the oil-fluorine mixture to vaporize and be discharged to the evaporator through the intake port of the oil-fluorine separator. In oil discharge operating conditions, the high-pressure exhaust solenoid valve is open, while the low-pressure intake solenoid valve and the low-pressure liquid inlet solenoid valve are closed. The high-temperature and high-pressure gas from the condenser pressurizes the oil separated in the lower layer of the oil-fluorine separator to the oil tank.

6. The method of use according to claim 5, characterized in that: When the high-pressure exhaust solenoid valve, low-pressure intake solenoid valve, or low-pressure liquid inlet solenoid valve malfunctions, the operating conditions can be switched manually via the angle valve on the oil-fluorine separator.

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