An oil-gas separation cylinder suitable for large-capacity flow oil injection screw compressor

By designing interconnected separator cylinders and intermediate separator components, the vibration and unstable lubricating oil flow problems of large-capacity flow-injected screw compressors were solved, achieving improved component strength and stable lubricating oil circulation.

CN116517837BActive Publication Date: 2025-11-25AIJING ENERGY SAVING TECH (SHANGHAI) CO LTD +1
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Patent Information

Application Number
CN202310236066.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-03-13
Publication Date
2025-11-25
Estimated Expiration
2043-03-13

AI Technical Summary

Technical Problem

The oil-gas separator of existing large-capacity flow-rate oil-injected screw compressors is prone to vibration at high flow rates, which affects its service life. In addition, the lubricating oil flow rate is unstable, resulting in poor lubricating oil circulation.

Method used

The design incorporates a first and second separator cylinder that are connected to each other, and combines an exhaust assembly and an oil discharge assembly within an intermediate separator assembly to enhance the strength of the components. The flow rate of the lubricating oil is also regulated by a flow regulating assembly.

Benefits of technology

The thickness of the venting and oil draining components was reduced, which improved their strength, stabilized the lubricating oil flow rate, and promoted the circulation of lubricating oil.

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Abstract

The application discloses an oil-gas separation cylinder suitable for a large-volume flow oil injection screw compressor, which comprises a mounting base, a first separation cylinder and a second separation cylinder fixedly mounted on the left and right ends of the top surface of the mounting base, wherein the first separation cylinder comprises a middle separation assembly and an exhaust assembly and an oil discharge assembly communicated with the upper and lower ends of the middle separation assembly. The application provides an oil-gas separation cylinder suitable for a large-volume flow oil injection screw compressor, which is suitable for the use of the large-volume flow oil injection screw compressor through the design of the first separation cylinder and the second separation cylinder communicated with each other; the thickness of the exhaust assembly and the oil discharge assembly is reduced, and the strength of the exhaust assembly and the oil discharge assembly is improved through the arrangement of a part of the exhaust assembly and the oil discharge assembly in the middle separation assembly, so that the internal components are protected; the lubricating oil flow rate can be adjusted through the arrangement of first and second flow adjusting assemblies, and the circulation of the lubricating oil is facilitated.
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Description

Technical Field

[0001] This invention belongs to the field of compressor technology, and particularly relates to an oil-gas separator suitable for large-capacity flow rate oil-injected screw compressors. Background Technology

[0002] An oil-gas separator is used to separate the working fluid and lubricating oil mixture in an oil-injected screw compressor. With technological advancements, the volumetric flow rate of oil-injected screw compressors has gradually increased, leading to increasingly stringent design requirements for oil-gas separators. The increased volumetric flow rate of oil-injected screw compressors results in greater impact on the oil-gas separator core, causing vibration and potentially affecting its lifespan. Furthermore, in actual use, the separated lubricating oil flows into the lower outlet of the separator. The flow velocity of the lubricating oil is primarily influenced by the flow field of the working fluid within the separator. When the flow field is unstable, the lubricating oil velocity is affected, causing level disturbances and hindering lubricating oil circulation. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned problems existing in the prior art and provide an oil-gas separator suitable for large-volume flow oil-injected screw compressors. The design of a first and second separator connected together is suitable for use in large-volume flow oil-injected screw compressors. By placing a portion of the exhaust assembly and oil discharge assembly within the intermediate separator, not only is the thickness of the exhaust and oil discharge assemblies reduced, but their strength is also increased, thereby protecting the internal components. The first and second flow regulating assemblies allow for adjustment of the lubricating oil flow rate, which is beneficial for lubricating oil circulation.

[0004] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0005] An oil-gas separator suitable for a large-volume flow oil-injected screw compressor includes a mounting base and a first separator and a second separator fixedly installed on the left and right ends of the top surface of the mounting base.

[0006] The first separation cylinder includes an intermediate separation component and an exhaust component and an oil discharge component connected to the upper and lower ends of the intermediate separation component;

[0007] The front end of the intermediate separation component is fixedly connected to the air intake component.

[0008] Furthermore, the intake assembly includes a first intake pipe and a first split pipe connected vertically, with a second split pipe connected to both ends of the first split pipe, and the end of the second split pipe away from the first split pipe connected to the intermediate separation assembly.

[0009] A second valve is installed on the second branch pipe.

[0010] Furthermore, a connecting pipe is fixedly connected between the two exhaust assemblies, and a third valve is installed on the connecting pipe.

[0011] Furthermore, an oil drain tee is fixedly connected between the two oil drain components.

[0012] Furthermore, the intermediate separation component includes a first cylinder and a second cylinder that is placed inside the first cylinder, with a preliminary separation filter cylinder provided between the first cylinder and the second cylinder;

[0013] The first flow regulating component and the second flow regulating component are respectively fixedly installed at the upper and lower ends of the first cylinder.

[0014] The first flow regulating component includes a first gate valve and a first extension end cap fixedly installed on the top surface of the first gate valve. The top surface of the first extension end cap has a first mounting hole, and the lower end of the exhaust component is tightly placed in the first mounting hole.

[0015] The second flow regulating component includes a second gate valve and a second extension end cap fixedly installed on the lower bottom surface of the second gate valve. The lower bottom surface of the second extension end cap has a second mounting hole, and the upper end of the oil discharge component is located in the second mounting hole.

[0016] Furthermore, the exhaust assembly includes a third cylinder and an oil-gas separator core fixedly installed inside the third cylinder;

[0017] The top of the third cylinder is fitted with a mounting cover, and an exhaust pipe is fixedly installed inside the mounting cover, which is connected to the third cylinder.

[0018] Furthermore, the oil discharge assembly includes a fourth cylinder and a guide filter plate placed on top of the fourth cylinder, and an arc-shaped guide filter platform is fixedly installed on the bottom surface of the guide filter plate;

[0019] A third extended end cap is fixedly installed at the lower end of the fourth cylinder body. A flow guide platform is fixedly installed inside the third extended end cap. The top surface of the flow guide platform is concave. A flow guide hole is opened in the center of the top surface of the flow guide platform. An installation cylinder is sealed and installed inside the flow guide hole. A filter plate is sealed and installed at the upper end of the installation cylinder. A waste liquid guide pipe is sealed and connected to the lower end of the installation cylinder. A first valve is installed on the waste liquid guide pipe.

[0020] The third extension head has a sealing hole in the center of its lower bottom surface that matches the mounting cylinder;

[0021] The left end of the fourth cylinder has two first adjustment holes arranged in a linear array, and an observation mirror is sealed and installed inside the first adjustment holes.

[0022] Four bottom supports are fixedly installed along the circumferential direction on the lower bottom edge of the third extended head. A support plate is fixedly installed on the end of the bottom support away from the third extended head, and the support plate is installed on the top surface of the mounting base.

[0023] The beneficial effects of this invention are:

[0024] 1. This invention provides an oil-gas separator suitable for large-volume flow oil-injected screw compressors. The design of a first separator and a second separator connected together is suitable for use in large-volume flow oil-injected screw compressors.

[0025] 2. By placing a portion of the exhaust assembly and the oil drain assembly inside the intermediate separation assembly, the present invention not only reduces the thickness of the exhaust assembly and the oil drain assembly, but also increases their strength, thereby protecting the internal components.

[0026] 3. The present invention can adjust the flow rate of lubricating oil by setting the first flow rate adjustment component and the second flow rate adjustment component, which is beneficial to the circulation of lubricating oil. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a partial structural schematic diagram of the present invention;

[0030] Figure 3 This is a partial structural schematic diagram of the present invention;

[0031] Figure 4 This is a partial structural cross-sectional view of the present invention;

[0032] Figure 5 This is a partial exploded view of the structure of the present invention;

[0033] Figure 6 This is a partial structural schematic diagram of the present invention;

[0034] Figure 7 This is a partial exploded view of the structure of the present invention;

[0035] Figure 8 This is a partial exploded view of the structure of the present invention;

[0036] Figure 9 This is a partial bottom view of the structure of the present invention;

[0037] Figure 10 This is a partial exploded view of the structure of the present invention. Detailed Implementation

[0038] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0040] like Figures 1 to 2 The oil-gas separator shown is suitable for a large-volume flow oil-injected screw compressor, including a mounting base 1 and a first separator 2 and a second separator 3 fixedly installed on the left and right ends of the top surface of the mounting base 1.

[0041] The first separation cylinder 2 includes an intermediate separation component 21 and an exhaust component 22 and an oil discharge component 23 connected to the upper and lower ends of the intermediate separation component 21;

[0042] The front end of the intermediate separation component 21 is fixedly connected to the air intake component 4;

[0043] The intake assembly 4 includes a first intake pipe 41 and a first split pipe 42 connected vertically. Both ends of the first split pipe 42 are respectively connected to a second split pipe 43. The end of the second split pipe 43 away from the first split pipe 42 is connected to the intermediate separation assembly 21.

[0044] A second valve 431 is installed on the second diversion pipe 43;

[0045] A connecting pipe 225 is fixedly connected between the two exhaust assemblies 22, and a third valve 226 is installed on the connecting pipe 225.

[0046] An oil drain tee 237 is fixedly connected between the two oil drain components 23;

[0047] An air intake component 4 is provided at the front center of the intermediate separation component 21 to ensure the oil-gas separation effect, reduce the working fluid flow, and ensure the stability of the ambient temperature during the working fluid flow.

[0048] like Figures 3 to 4As shown, the intermediate separation component 21 includes a first cylinder 211 and a second cylinder 212 that is placed inside the first cylinder 211. A preliminary separation filter cylinder 213 is provided between the first cylinder 211 and the second cylinder 212.

[0049] The first flow regulating component 214 and the second flow regulating component 215 are fixedly installed at the upper and lower ends of the first cylinder 211, respectively.

[0050] The first flow regulating component 214 includes a first gate valve 2141 and a first extension end cap 2142 fixedly installed on the top surface of the first gate valve 2141. The top surface of the first extension end cap 2142 has a first mounting hole 2143, and the lower end of the exhaust component 22 is tightly placed in the first mounting hole 2143.

[0051] The second flow regulating component 215 includes a second gate valve 2151 and a second extension end cap 2152 fixedly installed on the lower bottom surface of the second gate valve 2151. The lower bottom surface of the second extension end cap 2152 has a second mounting hole 2153, and the upper end of the oil discharge component 23 is located in the second mounting hole 2153.

[0052] A preliminary separation filter cartridge 213 is provided to perform the first step of separation in the oil-gas mixture zone. After passing through the preliminary separation filter cartridge 213, the oil flows into the second cylinder 212 for further separation.

[0053] With this configuration, the gas flow rate can be adjusted via the first gate valve 2141; at the same time, since the lower end of the exhaust assembly 22 is located at the first mounting hole 2143, the stability of the exhaust assembly 22 is increased, and better pressure resistance is obtained.

[0054] like Figure 5 As shown, the exhaust assembly 22 includes a third cylinder 221 and an oil-gas separator core 222 fixedly installed inside the third cylinder 221.

[0055] The top of the third cylinder 221 is fitted with a mounting cover 223, and an exhaust pipe 224 is fixedly installed inside the mounting cover 223. The exhaust pipe 224 is connected to the third cylinder 221.

[0056] like Figures 6 to 10 As shown, the oil discharge assembly 23 includes a fourth cylinder 231 and a guide filter plate 232 placed on the top of the fourth cylinder 231. An arc-shaped guide filter table 233 is fixedly installed on the bottom surface of the guide filter plate 232.

[0057] A third extension head 234 is fixedly installed at the lower end of the fourth cylinder 231. A guide platform 235 is fixedly installed inside the third extension head 234. The top surface of the guide platform 235 is concave. A guide hole 2351 is opened in the center of the top surface of the guide platform 235. An installation cylinder 2352 is sealed inside the guide hole 2351. A filter plate 2353 is sealed inside the upper end of the installation cylinder 2352. A waste liquid guide pipe 2354 is sealed inside the lower end of the installation cylinder 2352. A first valve 2355 is installed on the waste liquid guide pipe 2354.

[0058] The third extension end cap 234 has a sealing hole 2341 at the center of its bottom surface that matches the mounting cylinder 2352;

[0059] The left end of the fourth cylinder 231 has two first adjustment holes 2311 arranged in a linear array, and an observation mirror 2312 is sealed and installed inside the first adjustment holes 2311.

[0060] Four bottom supports 2342 are fixedly installed along the circumferential direction on the lower bottom edge of the third extension head 234. A support plate 2343 is fixedly installed on the end of the bottom support 2342 away from the third extension head 234. The support plate 2343 is installed on the top surface of the mounting base 1.

[0061] The support plate 2343 and the mounting base 1 can be connected by bolts.

[0062] In practical use, the design of the connected first separator 2 and second separator 3 is suitable for use in large-volume flow oil-injected screw compressors. By placing part of the exhaust assembly 22 and the oil discharge assembly 23 inside the intermediate separator 21, not only is the thickness of the exhaust assembly 22 and the oil discharge assembly 23 reduced, but the strength of the exhaust assembly 22 and the oil discharge assembly 23 is also improved, thereby protecting the internal components. The setting of the first flow regulating assembly 214 and the second flow regulating assembly 215 can regulate the lubricating oil flow rate, which is beneficial to the circulation of lubricating oil.

[0063] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An oil-gas separator suitable for large-capacity flow rate oil-injected screw compressors, characterized in that: Includes a mounting base (1) and a first separation cylinder (2) and a second separation cylinder (3) fixedly installed on the left and right ends of the top surface of the mounting base (1); The first separation cylinder (2) includes an intermediate separation component (21) and an exhaust component (22) and an oil discharge component (23) connected to the upper and lower ends of the intermediate separation component (21). The front end of the intermediate separation component (21) is fixedly connected to the air intake component (4). The intake assembly (4) includes a first intake pipe (41) and a first split pipe (42) connected vertically. Both ends of the first split pipe (42) are respectively connected to a second split pipe (43). The end of the second split pipe (43) away from the first split pipe (42) is connected to the intermediate separation assembly (21). A second valve (431) is installed on the second diversion pipe (43); A connecting pipe (225) is fixedly connected between the two exhaust assemblies (22), and a third valve (226) is installed on the connecting pipe (225). An oil drain tee (237) is fixedly connected between the two oil drain assemblies (23); The intermediate separation component (21) includes a first cylinder (211) and a second cylinder (212) placed inside the first cylinder (211), with a preliminary separation filter cartridge (213) provided between the first cylinder (211) and the second cylinder (212). The first flow regulating component (214) and the second flow regulating component (215) are respectively fixedly installed at the upper and lower ends of the first cylinder (211). The first flow regulating component (214) includes a first gate valve (2141) and a first extension end cap (2142) fixedly installed on the top surface of the first gate valve (2141). The top surface of the first extension end cap (2142) has a first mounting hole (2143), and the lower end of the exhaust component (22) is tightly placed in the first mounting hole (2143). The second flow regulating component (215) includes a second gate valve (2151) and a second extension end cap (2152) fixedly installed on the bottom surface of the second gate valve (2151). The bottom surface of the second extension end cap (2152) has a second mounting hole (2153). The upper end of the oil discharge component (23) is located in the second mounting hole (2153). The exhaust assembly (22) includes a third cylinder (221) and an oil-gas separator (222) fixedly installed inside the third cylinder (221). The top of the third cylinder (221) is fitted with a mounting cover (223), and an exhaust pipe (224) is fixedly installed inside the mounting cover (223). The exhaust pipe (224) is connected to the third cylinder (221). The oil discharge assembly (23) includes a fourth cylinder (231) and a guide filter plate (232) placed on the top of the fourth cylinder (231). An arc-shaped guide filter table (233) is fixedly installed on the bottom surface of the guide filter plate (232). A third extension head (234) is fixedly installed at the lower end of the fourth cylinder (231). A flow guide platform (235) is fixedly installed inside the third extension head (234). The top surface of the flow guide platform (235) is concave. A flow guide hole (2351) is opened in the center of the top surface of the flow guide platform (235). An installation cylinder (2352) is sealed inside the flow guide hole (2351). A filter plate (2353) is sealed inside the upper end of the installation cylinder (2352). A waste liquid guide pipe (2354) is sealed inside the lower end of the installation cylinder (2352). A first valve (2355) is installed on the waste liquid guide pipe (2354). The third extension end cap (234) has a sealing hole (2341) in the center of its bottom surface that matches the mounting cylinder (2352). The left end of the fourth cylinder (231) has two first adjustment holes (2311) arranged in a linear array, and an observation mirror (2312) is sealed inside the first adjustment hole (2311). Four bottom supports (2342) are fixedly installed along the circumferential direction on the bottom edge of the third extension head (234). A support plate (2343) is fixedly installed on the end of the bottom support (2342) away from the third extension head (234). The support plate (2343) is installed on the top surface of the mounting base (1).

Citation Information

Patent Citations

  • Oil-gas separator, compressor and air conditioner

    CN112922837A

  • Double-barrel oil-gas separation device for large-displacement low-pressure oil injection screw air compressor

    CN216742000U