Vertical three-stage oil separator for ammonia refrigeration

Abstract

The utility model discloses a vertical three-stage oil separator for ammonia refrigeration, relates to the technical field of refrigeration equipment, and aims to solve the problems that a horizontal oil separator is generally adopted in an existing ammonia refrigeration system, but the horizontal oil separator occupies a large area and is difficult to use in an area with a narrow field area; in addition, in a marine refrigeration occasion, due to shaking of a ship body, the separation efficiency of a horizontal oil separator is reduced, and intermittent oil outlet is difficult, the main points of the technical scheme are that the horizontal oil separator comprises a shell, a partition plate is fixedly connected to the interior of the shell, and an inner cylinder is fixedly connected to the end, located on the outer side of the partition plate, of the interior of the shell; a stainless steel wire net intercepting device is fixedly connected to the interior of the inner cylinder, the outer side of a threaded fixing pull rod is sleeved with a fine filter element clamping and fixing plate and a pull rod upper tightening nut, a fine filter element is inserted into a fine filter element seat groove, and a centrifugal channel is reserved between the inner cylinder and the shell. The effects of improving efficiency and facilitating use are achieved.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to a vertical three-stage oil separator for ammonia refrigeration. Background Technology

[0002] Currently, in the refrigeration field, the oil separator in an ammonia refrigeration system is a device installed between the compressor and the condenser. Its function is to separate the lubricating oil from the ammonia gas discharged from the compressor, preventing excessive lubricating oil from entering the heat exchanger with the refrigerant, preventing the formation of an insulating oil film in the heat exchanger, ensuring effective heat exchange between the refrigerant and the pipe walls, reducing energy consumption, preventing insufficient lubrication of the compressor due to lubricating oil loss, reducing mechanical wear, preventing oil clogging of pipes or valves, reducing system failure rate, reducing the risk of leakage of lubricating oil and ammonia mixture, reducing environmental pollution, and preventing the oil from carbonizing at high temperatures to generate harmful substances, thus improving system safety.

[0003] The existing technical solutions mentioned above have the following drawbacks: horizontal oil separators are commonly used in existing ammonia refrigeration systems, but horizontal oil separators occupy a large area and are difficult to use in areas with limited space; in addition, in marine refrigeration applications, the swaying of the hull causes the horizontal oil separator to have reduced separation efficiency and intermittent difficulty in oil discharge. Utility Model Content

[0004] The purpose of this invention is to provide a vertical three-stage oil separator for ammonia refrigeration.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A vertical three-stage oil separator for ammonia refrigeration includes a shell, a partition plate fixedly connected inside the shell, an inner cylinder fixedly connected to one end of the shell outside the partition plate, a stainless steel wire mesh interception device fixedly connected inside the inner cylinder, a spherical crown shell fixedly connected to one end of the inner cylinder outside the outer side of the inner cylinder, a fine filter element seat groove fixedly connected to the other end of the shell outside the partition plate, a fixing nut on a pull rod fixedly connected to the outer side of the fine filter element seat groove, a threaded fixing pull rod provided inside the fixing nut on the pull rod, a fine filter element clamping fixing plate and a tightening nut on the pull rod sleeved on the outer side of the threaded fixing pull rod, a fine filter element inserted into the fine filter element seat groove, and a centrifugal channel reserved between the inner cylinder and the shell.

[0007] By adopting the above technical solution, the hull has a vertical structure, which occupies a small area and has a large oil storage space at the bottom, which can solve the problem of oil leakage caused by hull rolling. At the same time, the internal centrifugal channel, fine filter element and stainless steel wire mesh interception device are set to achieve three-stage separation, which greatly reduces the oil content in the refrigerant gas.

[0008] Furthermore, a manhole flange is fixedly connected to the upper end of the housing, and a manhole flange cover is provided on the outside of the manhole flange. Bolts are inserted into the inside of the manhole flange cover, and a safety valve connector seat and a flange cover lifting lug are fixedly connected to the outside of the manhole flange cover.

[0009] By adopting the above technical solution, it is convenient to open the flange cover for the installation and removal of the fine filter element, which facilitates later maintenance.

[0010] Furthermore, a lower end cap is fixedly connected to the bottom of the housing, a base is fixedly connected to the bottom of the lower end cap, a refrigerant inlet pipe is fixedly connected to the outer side of the housing near the center of the housing, and a refrigerant outlet pipe is fixedly connected to the outer side of the housing near the manhole flange.

[0011] By adopting the above technical solution, the air inlet is located in the middle of the oil separator housing and the air outlet is located in the upper part of the oil separator housing, which facilitates better oil separation of refrigerant gas inside the device.

[0012] Furthermore, an oil injection valve seat, an upper photoelectric level gauge interface, and a lower photoelectric level gauge interface are fixedly connected to the outer side of the housing. An equipment lifting lug is fixedly connected to the outer side of the housing near the refrigerant outlet pipe. An upper oil outlet connector is fixedly connected to the outer side of the housing near the refrigerant inlet pipe. A lower oil outlet connector is fixedly connected to the outer side of the housing near the base. An upper sight glass and a lower sight glass are fixedly connected to the outer side of the housing near the lower photoelectric level gauge interface. An electric heater connector seat and a temperature sensor blind tube are fixedly connected to the outer side of the housing near the lower sight glass.

[0013] By adopting the above technical solutions, the equipment can be used more effectively.

[0014] Furthermore, the bolt extends through the manhole flange cover into the interior of the manhole flange and is threadedly connected to the manhole flange. The interiors of the inner cylinder, the partition, and the fine filter element seat groove are interconnected. One end of the bottom of the inner cylinder extends through the spherical crown shell to the outside of the spherical crown shell. The interior of the inner cylinder and the interior of the shell are interconnected. One end of the threaded fixing rod is threadedly connected to the fixing nut on the rod. The other end of the threaded fixing rod is threadedly connected to the tightening nut on the rod. The fine filter element clamping fixing plate and the outside of the fine filter element are in contact with each other.

[0015] By adopting the above technical solution and adding threaded tie rods and nuts, the installation and replacement of the fine filter element can be facilitated, making operation easier.

[0016] In summary, the beneficial technical effects of this utility model are as follows:

[0017] Employing a fine filter element, stainless steel wire mesh interception device, inner cylinder, and centrifugal channel, this device differs from traditional horizontal oil separators. It features a vertical structure with the air inlet located in the middle of the oil separator shell and the air outlet located at the top. This compact structure occupies a small area and has a large bottom oil storage space, effectively avoiding the problem of oil discharge difficulties caused by ship swaying.

[0018] Meanwhile, an inner cylinder and a stainless steel wire mesh interception device are installed inside. The air inlet pipe is tangentially connected to the shell from the outer shape, and a centrifugal channel is formed between the outer shell and the inner cylinder. The refrigerant passes through the centrifugal channel to achieve primary separation of large oil droplets, the stainless steel wire mesh interception device to achieve secondary separation of small oil droplets, and the fine filter element to achieve tertiary separation of fine oil mist. Through three-stage separation, the oil content in the refrigerant gas is greatly reduced, which improves the separation efficiency of the oil separator and produces a convenient effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This utility model Figure 1 Top view of the structure.

[0021] In the diagram, 1. Manhole flange cover; 2. Manhole flange; 3. Fine filter element clamping and fixing plate; 4. Housing; 5. Threaded fixing rod; 6. Fine filter element; 7. Fine filter element seat groove; 8. Partition plate; 9. Inner cylinder; 10. Stainless steel wire mesh interception device; 11. Oil injection valve seat; 12. Ball crown shell; 13. Upper sight glass; 14. Lower sight glass; 15. Electric heater connector; 16. Temperature sensor blind tube; 17. Lower end cap; 18. Equipment lifting lug; 19. Refrigerant outlet pipe; 20. Upper photoelectric level gauge interface; 21. Upper oil outlet connector; 22. Refrigerant inlet pipe; 23. Lower photoelectric level gauge interface; 24. Lower oil outlet connector; 25. Base; 26. Centrifugal channel; 1.1. Bolt; 1.2. Safety valve connector; 1.3. Flange cover lifting lug; 5.1. Tightening nut on the rod; 5.2. Fixing nut on the rod. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Reference Figure 1-2A vertical three-stage oil separator for ammonia refrigeration includes a shell 4. A partition 8 is fixedly connected inside the shell 4. An inner cylinder 9 is fixedly connected to one end of the shell 4 outside the partition 8. A stainless steel wire mesh interception device 10 is fixedly connected inside the inner cylinder 9. A spherical crown shell 12 is fixedly connected to one end of the inner cylinder 9 outside the outer side. A fine filter element seat groove 7 is fixedly connected to the other end of the shell 4 outside the partition 8. A fixing nut 5.2 on a pull rod is fixedly connected to the outer side of the fine filter element seat groove 7. A threaded fixing pull rod 5 is provided inside the fixing nut 5.2 on the pull rod. A fine filter element clamping fixing plate 3 and a tightening nut 5.1 on the pull rod are sleeved on the outer side of the threaded fixing pull rod 5. A fine filter element 6 (using a glass fiber fine filter element) is inserted into the fine filter element seat groove 7. A centrifugal channel 26 is reserved between the inner cylinder 9 and the shell 4. A manhole flange 2 is fixedly connected to the upper end of the shell 4. A manhole flange cover 1 is provided on the outer side of the manhole flange 2. The manhole flange cover 1 is internally fitted with bolts 1.1. The manhole flange cover 1 is externally fixedly connected with a safety valve connector seat 1.2 and a flange cover lifting lug 1.3. The bottom of the shell 4 is fixedly connected with a lower end cap 17, and the bottom of the lower end cap 17 is fixedly connected with a base 25. The outer side of the shell 4 is fixedly connected with a refrigerant inlet pipe 22 near the center of the shell 4. The outer side of the shell 4 is fixedly connected with a refrigerant outlet pipe 19 near the manhole flange 2. The shell 4 is a vertical structure with a small footprint and a large bottom oil storage space, which can solve the problem of oil discharge difficulty caused by hull rocking. At the same time, the internal centrifugal channel 26, fine filter element 6 and stainless steel wire mesh interception device 10 are set to achieve three-stage separation, which greatly reduces the oil content in the refrigerant gas. The air inlet is in the middle of the oil separator shell 4 and the air outlet is in the upper part of the oil separator shell 4, which facilitates better oil separation of refrigerant gas inside the device.

[0024] like Figure 1-2As shown, an oil filling valve seat 11, an upper photoelectric level gauge interface 20, and a lower photoelectric level gauge interface 23 are fixedly connected to the outer side of the housing 4. A lifting lug 18 is fixedly connected to the outer side of the housing 4 near the refrigerant outlet pipe 19. An upper oil outlet connector 21 is fixedly connected to the outer side of the housing 4 near the refrigerant inlet pipe 22. A lower oil outlet connector 24 is fixedly connected to the outer side of the housing 4 near the base 25. An upper sight glass 13 and a lower sight glass 14 are fixedly connected to the outer side of the housing 4 near the lower photoelectric level gauge interface 23. The outer side of the housing 4 near the lower sight glass 14 is fixedly connected to... The electric heater connector 15 and the temperature sensor blind tube 16 are fixedly connected. Bolt 1.1 passes through the manhole flange cover 1 and extends into the manhole flange 2, and is threadedly connected to the manhole flange 2. The interior of the inner cylinder 9, the partition plate 8 and the fine filter element seat groove 7 are interconnected. One end of the bottom of the inner cylinder 9 passes through the spherical crown shell 12 and extends to the outside of the spherical crown shell 12. The interior of the inner cylinder 9 and the interior of the shell 4 are interconnected. One end of the threaded fixing rod 5 is threadedly connected to the fixing nut 5.2 on the rod. The other end of the threaded fixing rod 5 is threadedly connected to the tightening nut 5.1 on the rod. The fine filter element clamping fixing plate 3 and the outer side of the fine filter element 6 are in contact with each other.

[0025] The implementation principle of this embodiment is as follows: The device has a vertical structure. The refrigerant inlet pipe 22 is located in the middle of the oil separator shell 4, and the refrigerant outlet pipe 19 is located in the upper part of the oil separator shell 4. The structure is compact and occupies a small area. At the same time, the bottom oil storage space is large, which can effectively avoid the difficulty of oil discharge caused by the swaying of the ship. The refrigerant gas enters the interior of the shell 4 through the refrigerant inlet pipe 22 located in the middle. First, it passes through the centrifugal channel 26 to achieve the first-stage separation of large oil droplets. Then, the refrigerant gas enters the interior of the inner cylinder 9 from the bottom and passes through the stainless steel wire mesh interception device 10 to achieve the second-stage separation of small oil droplets. The refrigerant gas coming out of the inner cylinder 9 enters the fine filter element 6 at the upper end of the shell 4 to achieve the third-stage separation of fine oil mist. After the three-stage separation, the oil content in the refrigerant gas is greatly reduced, improving the separation efficiency of the oil separator.

[0026] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A vertical three-stage oil separator for ammonia refrigeration, comprising a housing (4), characterized in that: A partition plate (8) is fixedly connected inside the housing (4). An inner cylinder (9) is fixedly connected to one end of the housing (4) outside the partition plate (8). A stainless steel wire mesh interception device (10) is fixedly connected inside the inner cylinder (9). A spherical crown shell (12) is fixedly connected to one end of the inner cylinder (9). A fine filter element seat groove (7) is fixedly connected to the other end of the housing (4) outside the partition plate (8). A fixing nut (5.2) on a pull rod is fixedly connected to the outside of the fine filter element seat groove (7). A threaded fixing pull rod (5) is provided inside the fixing nut (5.2) on the pull rod. A fine filter element clamping fixing plate (3) and a tightening nut (5.1) on the pull rod are sleeved on the outside of the threaded fixing pull rod (5). A fine filter element (6) is inserted into the fine filter element seat groove (7). A centrifugal channel (26) is reserved between the inner cylinder (9) and the housing (4).

2. The vertical three-stage oil separator for ammonia refrigeration according to claim 1, characterized in that: A manhole flange (2) is fixedly connected to the upper end of the housing (4). A manhole flange cover (1) is provided on the outside of the manhole flange (2). A bolt (1.1) is inserted into the inside of the manhole flange cover (1). A safety valve connector seat (1.2) and a flange cover lifting lug (1.3) are fixedly connected to the outside of the manhole flange cover (1).

3. The vertical three-stage oil separator for ammonia refrigeration according to claim 1, characterized in that: The bottom of the housing (4) is fixedly connected to a lower end cap (17), and the bottom of the lower end cap (17) is fixedly connected to a base (25). A refrigerant inlet pipe (22) is fixedly connected to the outer side of the housing (4) near the center of the housing (4), and a refrigerant outlet pipe (19) is fixedly connected to the outer side of the housing (4) near the manhole flange (2).

4. The vertical three-stage oil separator for ammonia refrigeration according to claim 1, characterized in that: The outer side of the housing (4) is fixedly connected to an oil injection valve seat (11), an upper photoelectric level gauge interface (20), and a lower photoelectric level gauge interface (23). The outer side of the housing (4) is fixedly connected to an equipment lifting lug (18) at the end near the refrigerant outlet pipe (19). The outer side of the housing (4) is fixedly connected to an upper oil outlet connector (21) at the end near the refrigerant inlet pipe (22). The outer side of the housing (4) is fixedly connected to a lower oil outlet connector (24) at the end near the base (25). The outer side of the housing (4) is fixedly connected to an upper sight glass (13) and a lower sight glass (14) at the end near the lower photoelectric level gauge interface (23). The outer side of the housing (4) is fixedly connected to an electric heater connector seat (15) and a temperature sensor blind tube (16).

5. The vertical three-stage oil separator for ammonia refrigeration according to claim 2, characterized in that: The bolt (1.1) passes through the manhole flange cover (1) and extends into the manhole flange (2), and is threadedly connected to the manhole flange (2). The interiors of the inner cylinder (9), the partition (8), and the fine filter element seat groove (7) are interconnected. One end of the bottom of the inner cylinder (9) extends through the spherical crown shell (12) to the outside of the spherical crown shell (12). The interior of the inner cylinder (9) and the interior of the shell (4) are interconnected. One end of the threaded fixing rod (5) is threadedly connected to the fixing nut (5.2) on the rod. The other end of the threaded fixing rod (5) is threadedly connected to the tightening nut (5.1) on the rod. The fine filter element clamping fixing plate (3) and the outer side of the fine filter element (6) are in contact with each other.

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