Oil tank and oil-gas separation system of refrigerant centrifugal water chilling unit

Abstract

The invention relates to the technical field of oil-gas separation, in particular to an oil tank of a refrigerant centrifugal chiller and an oil-gas separation system.The oil tank comprises a filter screen and a rotating rod, the filter screen is inclined, the rotating rod is located above the lowest end of the filter screen, and a plurality of back fin plates are fixedly installed on the outer wall of the rotating rod in a circular array mode; and the back fin plate can rotate to scrape away the mixture at the lowest position of the filter screen. Through cooperation of the rotating rod, the back fin plate, the worm gear, the worm, the material passing groove and the discharging pipe, when a mixture needs to be cleaned, an operator only needs to manually rotate the worm gear and drive the worm to drive the rotating rod to rotate, the mixture is shoveled away through the back fin plate, so that the cleaning effect is achieved, and then the mixture is discharged to the outside through drainage of the discharging pipe and the material passing groove; the cleaning effect can be achieved without disassembling the equipment, and the practicability of the equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of oil-gas separation technology, specifically to an oil tank and oil-gas separation system for a refrigerant centrifugal chiller unit. Background Technology

[0002] The oil tank for centrifuges is a device for the oil supply system of centrifugal compressors. Together with the oil cooler, oil separator, oil heater, etc., it forms the oil supply system for centrifugal compressors. Its function is to store refrigeration oil, heat the refrigeration oil in the oil tank before starting the machine, and heat and evaporate the refrigerant mixed in the refrigeration oil, thereby reducing the refrigerant content in the oil and maintaining the refrigeration oil at a certain viscosity.

[0003] Currently, the oil circulation system of centrifugal chillers only collects and heats the refrigeration oil in the oil tank. However, the filtration and separation of the refrigerant separated from the refrigeration oil needs to be carried out inside the compressor gearbox. The refrigerant separated from the gearbox returns to the compressor suction port through the balance pipe. This mechanism increases the floor space occupied by the compressor gearbox, and mechanical impurities (metal shavings, welding slag, dust) or sludge / carbon deposits (oxidation products of lubricating oil; gum or asphalt) accumulate on the oil-gas filter screen after long-term use. Existing equipment requires manual disassembly and cleaning of the oil-gas filter screen periodically, which is very inconvenient. Therefore, this invention provides an oil tank and oil-gas separation system for a refrigerant centrifugal chiller unit. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of the low practicality of oil-gas separation systems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an oil tank and oil-gas separation system for a refrigerant centrifugal chiller unit, comprising: a filter screen and a rotating rod, wherein the filter screen is inclined, the rotating rod is located above the lowest end of the filter screen, and multiple dorsal fins are fixedly installed in a circular array on the outer wall of the rotating rod, the dorsal fins being able to rotate and scrape away the mixture at the lowest point of the filter screen;

[0006] The outer wall of the rotating rod is arranged in a circular array with multiple material passages. The bottom of the material passage is provided with an inlet trough. The outer wall of the inlet trough is connected to a discharge pipe. The mixture in the material passage enters the inner wall of the discharge pipe.

[0007] In a preferred embodiment, a rectangular ring is fixedly installed on the outer wall of the filter screen, a support plate is fixedly installed at the bottom of the rectangular ring, a fan-shaped plate is fixedly installed on the side of the support plate away from the rotating rod, an oil tank shell is fixedly installed on both sides of the support plate and the outer wall of the fan-shaped plate, a tank plate one and a tank plate two are fixedly installed at both ends of the oil tank shell, and an oil and gas pipe and a balance valve are connected at the highest point of the oil tank shell, with the oil and gas pipe and the balance valve located directly above the rectangular ring;

[0008] A heating tube is fixedly installed on one side of the tank panel near the oil tank shell, and the heating tube is located directly below the rectangular ring;

[0009] A rectangular groove is provided on one side of the second box panel, and the inner wall of the rectangular groove is fixedly installed on the bottom of the support plate.

[0010] In a preferred embodiment, a second ventilation pipe is fixedly installed on the inner wall of the rectangular ring. The outer wall of the second ventilation pipe, located inside the rectangular ring, has multiple ventilation slots arranged in a circular array. One end of the second ventilation pipe, located inside the rectangular ring, is rotatably connected to a circular plate. One side of the circular plate is connected to multiple first ventilation pipes arranged in a circular array. The outer wall of the first ventilation pipe, located inside the material passage groove, is connected to an air bladder.

[0011] In a preferred embodiment, the second ventilation pipe is airtightly rotatably connected to a hemisphere away from the inner wall of the first circular plate. An optical axis is fixedly installed on the flat surface of the hemisphere, and a rectangular rod is fixedly installed at the top of the optical axis. An n-shaped rod is slidably connected through the outer wall of the rectangular rod, and the inner wall of the n-shaped rod can be locked onto the outer wall of the hemisphere.

[0012] In a preferred embodiment, an arc-shaped tube is fixedly installed on the top of the support plate within the rectangular groove. The inner wall of the arc-shaped tube can contact the outer wall of the dorsal fin plate, and the outer wall of the highest point of the arc-shaped tube is fixedly installed on the inner top of the rectangular groove.

[0013] In a preferred embodiment, the inner wall of the rectangular groove has a limiting plate, and the inner wall of the limiting plate is provided with a rotatable worm wheel. The worm wheel is threadedly connected to a worm. One end of the worm passes through and is airtightly rotatably connected to the inner wall of the rectangular ring. A circular plate is fixedly installed on one end of the worm located inside the rectangular ring. One side of the circular plate is connected to one end of the discharge pipe.

[0014] In a preferred embodiment, the rectangular ring has a discharge groove on the inner wall of the rectangular groove. One end of the discharge groove is located directly below the worm gear, and the other end of the discharge groove is connected to a discharge pipe. One end of the discharge pipe is fixedly installed on the outer wall of the arc-shaped tube.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0016] I. This invention utilizes the cooperation between the rotating rod, dorsal fin plate, worm gear, worm, material passage chute, and discharge pipe. When cleaning a mixture is required, the operator only needs to manually rotate the worm gear, which drives the worm to rotate and scoop up the mixture through the dorsal fin plate, thereby achieving the cleaning effect. Subsequently, the mixture is discharged to the outside through the discharge pipe and material passage chute. The cleaning effect can be achieved without disassembling the equipment, thus improving the practicality of the equipment.

[0017] Second, this invention improves the functionality of the device by coordinating the ventilation pipe 1, airbag, ventilation pipe 2, ventilation groove, and hemisphere. After cleaning the mixture with the rotating rod, oil and gas may escape to the outside. After cleaning, the operator can introduce air pressure into ventilation pipe 2, and the airbag volume increases through the connection between ventilation groove and ventilation pipe 1, blocking the inner wall of the material channel and preventing oil and gas from entering the feed trough through the material channel. At the same time, when cleaning is required, it is only necessary to drive the hemisphere to open the inner wall of ventilation pipe 2, so that the feed trough volume decreases and no longer blocks the inner wall of the material channel, thus improving the functionality of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention:

[0020] Figure 2 This is a three-dimensional structural diagram of the box panel of the present invention:

[0021] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the present invention:

[0022] Figure 4 Here is a schematic diagram of the three-dimensional structure of the filter screen of the present invention:

[0023] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the arc-shaped tube of the present invention:

[0024] Figure 6 Here is a schematic diagram of the arc-shaped tube of the present invention:

[0025] Figure 7 Here is a schematic diagram of the three-dimensional structure of the rotating rod of the present invention:

[0026] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0027] Figure 9 This is a schematic diagram of the internal three-dimensional structure of the rotating rod of the present invention;

[0028] Figure 10 for Figure 9 Enlarged view at point B in the middle;

[0029] Figure 11 for Figure 9 Enlarged view of point C in the middle.

[0030] Reference numerals: 1. Tank shell; 10. Tank plate one; 11. Tank plate two; 12. Rectangular groove; 13. Heating tube; 14. Oil and gas pipe; 15. Balance valve; 16. Fan-shaped plate; 17. Support plate; 18. Rectangular ring; 19. Filter screen; 2. Arc-shaped pipe; 20. Circular plate one; 21. Dorsal fin plate; 22. Ventilation pipe one; 23. Ventilation pipe two; 24. Ventilation groove; 25. Rotating rod; 26. Airbag; 27. Feed chute; 28. Material passage chute; 3. Discharge pipe; 30. Circular plate two; 31. Discharge pipe; 32. Worm gear; 33. Worm wheel; 34. Discharge chute; 4. Hemisphere; 40. Optical axis; 41. Rectangular rod; 42. N-shaped rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] The present invention will be further described below with reference to embodiments.

[0033] Example: Refer to Figures 1 to 11 This invention provides a technical solution: an oil tank and oil-gas separation system for a refrigerant centrifugal chiller unit, comprising: a filter screen 19 and a rotating rod 25. The filter screen 19 is inclined, and the rotating rod 25 is located above the lowest end of the filter screen 19. Multiple dorsal fins 21 are fixedly installed in a circular array on the outer wall of the rotating rod 25. The dorsal fins 21 can rotate and scrape away the mixture at the lowest point of the filter screen 19. Multiple material passages 28 are opened in the circular array on the outer wall of the rotating rod 25. An inlet groove 27 is opened at the bottom of the inner wall of the material passage 28. The outer wall of the inlet groove 27 is connected to a discharge pipe 3. The mixture in the material passage 28 enters the inner wall of the discharge pipe 3.

[0034] like Figures 1 to 11As shown, a rectangular ring 18 is fixedly installed on the outer wall of the filter screen 19, a support plate 17 is fixedly installed at the bottom of the rectangular ring 18, a fan-shaped plate 16 is fixedly installed on the side of the support plate 17 away from the rotating rod 25, an oil tank shell 1 is fixedly installed on both sides of the support plate 17 and the outer wall of the fan-shaped plate 16, a tank plate 10 and a tank plate 11 are fixedly installed at both ends of the oil tank shell 1, an oil and gas pipe 14 and a balance valve 15 are connected at the highest point of the oil tank shell 1, the oil and gas pipe 14 and the balance valve 15 are located directly above the rectangular ring 18, a heating pipe 13 is fixedly installed on the side of the tank plate 10 near the oil tank shell 1, the heating pipe 13 is located directly below the rectangular ring 18, a rectangular groove 12 is opened on one side of the tank plate 11, and the inner wall of the rectangular groove 12 is fixedly installed at the bottom of the support plate 17.

[0035] During normal operation of the equipment, as the refrigeration oil is heated by the heating pipe 13, the oil vapor emitted passes through the inner wall of the rectangular ring 18 and comes into contact with the refrigerant in the oil vapor pipe 14 for cooling. With increasing usage time, a mixture accumulates on the filter screen 19. This mixture consists of mechanical impurities, metal shavings, welding slag, dust, sludge / carbon deposits, lubricating oil oxidation products, gums, or asphalt, etc. (Refer to the attached document). Figure 5 As shown, the filter screen 19 is tilted, so that the mixture above the filter screen 19 will automatically slide to the lowest point of the filter screen 19 and move towards the arc-shaped tube 2; thus reducing the impact of clogging on the air permeability of the filter screen 19 near the highest point.

[0036] When it is necessary to clean the mixture on filter screen 19, the operator first opens the inner wall of vent pipe 23 and the inner wall of feed chute 27, and then refers to the attached... Figure 6 As shown, simply rotate the drive rod 25 counterclockwise.

[0037] like Figures 1 to 11 As shown, a second ventilation pipe 23 is fixedly installed on the inner wall of a rectangular ring 18. Multiple ventilation slots 24 are arranged in a circular array on the outer wall of the second ventilation pipe 23 located inside the rectangular ring 18. A circular plate 20 is rotatably connected to one end of the second ventilation pipe 23 located inside the rectangular ring 18. Multiple ventilation pipes 22 are connected in a circular array on one side of the circular plate 20. An airbag 26 is connected to the outer wall of the first ventilation pipe 22 located inside the material channel 28. A hemisphere 4 is airtightly rotatably connected to the inner wall of the second ventilation pipe 23 away from the circular plate 20. An optical axis 40 is fixedly installed on the flat surface of the hemisphere 4. A rectangular rod 41 is fixedly installed at the top of the optical axis 40. An n-shaped rod 42 is slidably connected through the outer wall of the rectangular rod 41. The inner wall of the n-shaped rod 42 can be locked onto the outer wall of the hemisphere 4.

[0038] When cleaning the mixture is not required, to prevent oil and gas from being discharged through the feed channel 28 and ultimately exiting through the discharge pipe 31, thus reducing the mixing effect of oil and gas and refrigerant, the inner wall of the second vent pipe 23 can be opened by manually rotating the hemisphere 4. Then, air pressure is introduced into the second vent pipe 23. The air pressure enters the inner wall of the first vent pipe 22 through the vent channel 24, and finally enters the inner wall of the airbag 26. This increases the volume of the airbag 26 and puts it in contact with the inner wall of the feed channel 28, preventing oil and gas from entering the inner wall of the feed channel 27. When the airbag 26 is blocked... After the material passage trough 28 is closed, the operator manually rotates the hemisphere 4 to block the inner wall of the second vent pipe 23 to prevent air pressure leakage. At the same time, in order to prevent the airbag 26 from being squeezed by the oil and gas pressure in the oil tank shell 1, and to prevent the hemisphere 4 from rotating automatically, after the hemisphere 4 blocks the inner wall of the second vent pipe 23, the operator puts an n-shaped rod 42 on the outer wall of the rectangular rod 41, and the n-shaped rod 42 is simultaneously engaged with the outer wall of the second vent pipe 23, thereby preventing the hemisphere 4 from rotating automatically.

[0039] like Figures 1 to 11 As shown, an arc-shaped tube 2 is fixedly installed on the top of the support plate 17 inside the rectangular groove 12. The inner wall of the arc-shaped tube 2 can contact the outer wall of the dorsal fin plate 21. The outer wall of the highest point of the arc-shaped tube 2 is fixedly installed on the inner top of the rectangular groove 12. The inner wall of the rectangular groove 12 has a limiting plate. The inner wall of the limiting plate is provided with a rotatable worm wheel 33. The worm wheel 33 is threadedly connected to a worm 32. One end of the worm 32 passes through and is airtightly rotatably connected to the inner wall of the rectangular ring 18. A circular plate 30 is fixedly installed on one end of the worm 32 inside the rectangular ring 18. One side of the circular plate 30 is connected to one end of the discharge pipe 3. The rectangular ring 18 is provided with a discharge groove 34 on the inner wall of the rectangular groove 12. One end of the discharge groove 34 is located directly below the worm 32. The other end of the discharge groove 34 is connected to a discharge pipe 31. One end of the discharge pipe 31 is fixedly installed on the outer wall of the arc-shaped tube 2.

[0040] Reference Appendix Figure 6 As shown, when the rotating rod 25 drives multiple dorsal fins 21 to rotate counterclockwise, the shape of the dorsal fins 21 allows the mixture to be scooped onto the back surface of the dorsal fins 21. The mixture then slides freely down the back surface to the inner wall of the feed trough 28. When the rotating rod 25 needs to be rotated, the operator first opens the inner wall of the vent pipe 23, allowing the airbag 26 to shrink and no longer block the inner wall of the feed trough 28. Then, the mixture in the feed trough 28 passes through the attached... Figure 11 The feed chute 27 enters the inner wall of the discharge pipe 3, and then... (See attached image) Figure 10 As shown, the mixture finally enters the discharge trough 34 and then flows out to the outside through the discharge pipe 31. The operation is simple and does not require disassembly of the equipment for cleaning.

[0041] Working principle: During normal operation of the equipment, as the refrigeration oil is heated by the heating pipe 13, the oil vapor emitted passes through the inner wall of the rectangular ring 18 and comes into contact with the refrigerant in the oil vapor pipe 14 for cooling. As the usage time increases, a lot of mixture accumulates on the top of the filter screen 19.

[0042] When it is necessary to clean the mixture on filter screen 19, the operator first opens the inner wall of vent pipe 23 and the inner wall of feed chute 27, and then refers to the attached... Figure 6 As shown, the rotating rod 25 rotates counterclockwise. When the rotating rod 25 drives the multiple dorsal fins 21 to rotate counterclockwise, the shape of the dorsal fins 21 allows the mixture to be scooped onto the back surface of the dorsal fins 21. The mixture then slides freely down the back surface to the inner wall of the feed trough 28. When the rotating rod 25 needs to be rotated, the operator first opens the inner wall of the vent pipe 23, allowing the airbag 26 to shrink and no longer block the inner wall of the feed trough 28. Then, the mixture in the feed trough 28 passes through the attached... Figure 11 The feed chute 27 enters the inner wall of the discharge pipe 3, and then... (See attached image) Figure 10 As shown, the mixture finally enters the discharge trough 34 and then flows out to the outside through the discharge pipe 31;

[0043] After cleaning the mixture, first manually rotate the hemisphere 4 to open the inner wall of the second vent pipe 23, then introduce air pressure into the second vent pipe 23. The air pressure enters the inner wall of the first vent pipe 22 through the vent groove 24, and finally enters the inner wall of the airbag 26, which increases the volume of the airbag 26 and makes it contact the inner wall of the feed groove 28, preventing oil and gas from entering the inner wall of the feed groove 27. After the airbag 26 blocks the inner wall of the feed groove 28, the operator manually rotates the hemisphere 4 to block the inner wall of the second vent pipe 23 to prevent air pressure leakage. Finally, the operator puts the n-shaped rod 42 on the outer wall of the rectangular rod 41, and the n-shaped rod 42 is simultaneously engaged with the outer wall of the second vent pipe 23.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil tank and oil-gas separation system for a refrigerant centrifugal chiller unit, characterized in that, include: The filter screen (19) and the rotating rod (25) are inclined. The rotating rod (25) is located above the lowest end of the filter screen (19). Multiple dorsal fins (21) are fixedly installed in a circular array on the outer wall of the rotating rod (25). The dorsal fins (21) can rotate to scrape away the mixture at the lowest point of the filter screen (19). The outer wall of the rotating rod (25) is arranged in a circular array with multiple material passages (28). The bottom of the material passage (28) is provided with an inlet groove (27). The outer wall of the inlet groove (27) is connected to a discharge pipe (3). The mixture in the material passage (28) enters the inner wall of the discharge pipe (3).

2. The oil tank and oil-gas separation system of the refrigerant centrifugal chiller unit according to claim 1, characterized in that: A rectangular ring (18) is fixedly installed on the outer wall of the filter screen (19). A support plate (17) is fixedly installed at the bottom of the rectangular ring (18). A fan-shaped plate (16) is fixedly installed on the side of the support plate (17) away from the rotating rod (25). An oil tank shell (1) is fixedly installed on both sides of the support plate (17) and the outer wall of the fan-shaped plate (16). A tank plate one (10) and a tank plate two (11) are fixedly installed at both ends of the oil tank shell (1). An oil and gas pipe (14) and a balance valve (15) are connected at the highest point of the oil tank shell (1). The oil and gas pipe (14) and the balance valve (15) are located directly above the rectangular ring (18). A heating tube (13) is fixedly installed on the side of the box plate (10) near the oil tank shell (1), and the heating tube (13) is located directly below the rectangular ring (18); A rectangular groove (12) is provided on one side of the box plate (11), and the inner wall of the rectangular groove (12) is fixedly installed on the bottom of the support plate (17).

3. The oil tank and oil-gas separation system of the refrigerant centrifugal chiller unit according to claim 1, characterized in that: A second ventilation pipe (23) is fixedly installed on the inner wall of the rectangular ring (18). The outer wall of the second ventilation pipe (23) inside the rectangular ring (18) is provided with multiple ventilation slots (24) arranged in a circular array. One end of the second ventilation pipe (23) inside the rectangular ring (18) is rotatably connected to a circular plate (20). One side of the circular plate (20) is connected to multiple first ventilation pipes (22) arranged in a circular array. The outer wall of the first ventilation pipe (22) inside the material channel (28) is connected to an air bladder (26).

4. The oil tank and oil-gas separation system of the refrigerant centrifugal chiller unit according to claim 3, characterized in that: The second ventilation pipe (23) is airtightly rotatably connected to a hemisphere (4) away from the inner wall of the first circular plate (20). A light axis (40) is fixedly installed on the flat surface of the hemisphere (4). A rectangular rod (41) is fixedly installed at the top of the light axis (40). An n-shaped rod (42) is slidably connected through the outer wall of the rectangular rod (41). The inner wall of the n-shaped rod (42) can be locked onto the outer wall of the hemisphere (4).

5. The oil tank and oil-gas separation system of the refrigerant centrifugal chiller unit according to claim 2, characterized in that: The support plate (17) is located in the rectangular groove (12) and the top of the plate is fixedly installed with an arc-shaped tube (2). The inner wall of the arc-shaped tube (2) can contact the outer wall of the dorsal fin plate (21). The outer wall of the highest point of the arc-shaped tube (2) is fixedly installed in the inner top of the rectangular groove (12).

6. The oil tank and oil-gas separation system of the refrigerant centrifugal chiller unit according to claim 5, characterized in that: The inner wall of the rectangular groove (12) has a limiting plate, and the inner wall of the limiting plate is provided with a rotatable worm wheel (33). The worm wheel (33) is threadedly connected to a worm (32). One end of the worm (32) passes through and is airtightly rotatably connected to the inner wall of the rectangular ring (18). A circular plate (30) is fixedly installed on one end of the worm (32) inside the rectangular ring (18). One side of the circular plate (30) is connected to one end of the discharge pipe (3).

7. The oil tank and oil-gas separation system of the refrigerant centrifugal chiller unit according to claim 6, characterized in that: The rectangular ring (18) has a discharge groove (34) on the inner wall of the rectangular groove (12). One end of the discharge groove (34) is located directly below the worm (32), and the other end of the discharge groove (34) is connected to the discharge pipe (31). One end of the discharge pipe (31) is fixedly installed on the outer wall of the arc-shaped pipe (2).

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