Oil-gas mixing and separating device
By designing oil storage parts and float-type liquid traps in the oil and gas separation device, the problem of internal leakage during the oil return process of the oil and gas separation device is solved, and the effects of reducing gas consumption and improving energy efficiency are achieved.
Patent Information
- Application Number
- CN202420488147.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-03-13
AI Technical Summary
The existing oil and gas separation devices have internal leakage problems during the oil return process, causing compressed air to flow back to the screw main unit, increasing power consumption and reducing the energy efficiency of the entire machine.
Design an oil and gas mixing and separation device, including a cylinder, an oil and gas separation filter element, an oil storage part and a float trap valve. The oil storage part is added at the bottom of the oil and gas separation filter element. The precipitated lubricating oil flows to the oil storage chamber. After exceeding the set volume, it flows to the screw host. The float-type liquid trap valve is used to isolate the entry of compressed air.
It effectively prevents the compressed air from re-entering the screw host, reduces the gas production loss of the screw host, and improves the energy efficiency of the entire machine.
Smart Images
Figure CN222376713U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of gas-liquid separation, and in particular relates to an oil-gas mixing separation device. Background Art
[0002] The oil-gas mixture discharged from the exhaust port of the oil-injected screw main unit enters the oil-gas separation cylinder, where the oil-gas mixture is first subjected to cyclonic coarse separation. After coarse separation, most of the lubricating oil will flow down along the cylinder wall and gather at the bottom of the oil-gas separation cylinder. Since coarse separation can only separate large particles of oil droplets, small particles of oil droplets that cannot be separated by coarse separation will bypass the guide cylinder with the oil-gas mixture and pass through the oil-gas separation filter element for high-precision secondary separation. The separated lubricating oil will gather on the inner wall of the oil-gas separation filter element and, under the action of gravity, will be deposited at the bottom of the oil-gas separation filter element. The lubricating oil gathered at the bottom of the oil-gas separation filter element is pressurized lubricating oil, which is returned to the screw main unit through the steel pipe inserted at the bottom of the oil-gas separation filter element and the oil return one-way valve to achieve recycling (the lubricating oil pressure at the bottom of the oil-gas separation filter element is high, and the pressure at the screw main unit is low. Under the action of the pressure difference, the lubricating oil is refluxed).
[0003] At present, most of the oil-gas separation filter elements on the market realize the oil return of lubricating oil by means of pressure difference, so as to realize recycling, which is simple, effective, reliable and stable. However, the above oil return method has the problem of internal leakage. There is a small oil return hole processed in the oil return check valve, and the diameter is generally in the range of 1 to 4 mm (match the appropriate diameter according to the size of the machine). In actual use, the operating conditions of the screw host are changing (exhaust pressure, volume flow, etc. are constantly changing), and it is impossible to achieve that only lubricating oil is returned by the oil return check valve, and compressed air will also flow back to the host, thus forming an internal leakage. Internal leakage causes the compressed air that has been compressed to flow back to the screw host for secondary compression. While the gas production of the screw host is lost, it also generates excess power consumption, which is not conducive to the energy saving of the entire screw host. Utility Model Content
[0004] The purpose of the utility model is to solve the above problems in the existing technology and to propose an oil-gas separation device which can reduce gas consumption and improve energy efficiency.
[0005] The purpose of the utility model can be achieved through the following technical solutions: an oil-gas mixing and separation device, comprising:
[0006] A cylinder, wherein a hollow cavity is arranged in the cylinder, and an air inlet and an air outlet are arranged on the cylinder, respectively connected to the hollow cavity, the air inlet is connected to the screw main unit, and the air outlet is connected to an external device;
[0007] An oil-gas separation filter element is arranged in the hollow cavity, and a coarse separation channel is arranged between the oil-gas separation filter element and the cylinder;
[0008] An oil storage component is connected to the oil-gas separation filter element. The oil storage component includes an oil storage cavity. The oil storage cavity is respectively connected to the oil-gas separation filter element and the screw main unit. The lubricating oil precipitated in the oil-gas separation filter element flows into the oil storage cavity. Whenever the lubricating oil in the oil storage cavity exceeds a set volume, the lubricating oil in the oil storage cavity flows to the screw main unit.
[0009] In the above-mentioned oil-gas mixing and separation device, the oil storage component includes a float-type drain valve, and the oil storage chamber is opened in the float-type drain valve.
[0010] In the above-mentioned oil-gas mixing and separation device, a Y-type filter is provided in communication between the float-type drain valve and the oil-gas separation filter element.
[0011] In the above-mentioned oil-gas mixture separation device, a ball valve is provided at the waste collection end of the Y-type filter.
[0012] In the above-mentioned oil-gas mixture separation device, the Y-type filter and the float-type drain valve are connected through a steel pipe.
[0013] In the above-mentioned oil-gas mixing and separation device, a guide ring is arranged in the cylinder, a gap is arranged between the guide ring and the cylinder wall of the cylinder to form a rough separation channel, and the oil-gas separation filter element is connected to the rough separation channel.
[0014] In the above-mentioned oil-gas mixing and separation device, an oil drain port is provided at the bottom of the oil-gas separation filter element, and the oil drain port is communicated with the oil storage chamber. In terms of vertical height, the oil storage component is located below the oil drain port.
[0015] In the above-mentioned oil-gas mixing and separation device, a through hole is opened on the cylinder wall of the cylinder, a connecting pipe is arranged at the oil discharge port, the connecting pipe extends through the through hole and is connected with the oil storage component, a connecting flange is fixedly arranged at the through hole, and the connecting flange is respectively connected and fixed with the connecting pipe and the oil storage component.
[0016] In the above-mentioned oil-gas mixing and separation device, the connecting pipe includes a bellows, and connecting joints are provided at both ends of the bellows. The connecting joints are respectively detachably fixedly connected to the oil-gas separation filter element and the connecting flange.
[0017] In the above-mentioned oil-gas mixing and separation device, a connecting ring is fixedly provided on the outer cylinder wall at the through hole, and the connecting ring is fixed to the connecting flange.
[0018] Compared with the prior art, the beneficial effects of the utility model are:
[0019] (1) An oil storage part with an oil storage chamber is added at the bottom of the oil-gas separation filter element. The precipitated lubricating oil flows into the oil storage chamber. When the lubricating oil in the oil storage chamber exceeds the set volume, the lubricating oil collected in the oil storage chamber will flow to the screw main unit, thus preventing the compressed air from re-entering the screw main unit, reducing the loss of gas production of the screw main unit, and thus improving the energy efficiency of the whole machine;
[0020] (2) Using a float-type drain valve as a load-bearing device for the oil storage chamber can block air and discharge oil, isolate the entry of compressed air, and use the rise and fall of the float to drive the valve disc to open or close, so that the oil will be discharged only when the volume exceeds the set volume;
[0021] (3) A guide ring is arranged in the cylinder, the upper end of which is fixed at the top of the cylinder, and a gap is left between the lower end of the guide ring and the bottom of the cylinder so that it is connected to the oil-gas separation filter element to roughly separate the large oil droplets in the oil-gas mixture;
[0022] (4) The float-type drain valve will close the connection with the screw main unit during the oil collection process. In order to ensure that the lubricating oil collected at the bottom of the oil-gas separation filter element can smoothly enter the float-type drain valve, it is necessary to design an oil storage part below the oil discharge port so that the lubricating oil can flow to the drain valve by gravity. The float-type drain valve is set outside the cylinder for easy inspection and maintenance. In order to ensure the sealing of the cylinder, a connecting flange is set at the through hole to seal it. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;
[0024] Figure 2 It is a schematic diagram of the plane structure of the utility model.
[0025] In the figure, the cylinder 100; the air inlet 101; the air outlet 102; the oil-gas separation filter element 103; the float type liquid drain valve 104; the Y-type filter 105; the guide ring 106; the oil discharge port 107; the through hole 108; the connecting pipe 109; the connecting flange 110; the connecting ring 111; the ball valve 112; and the screw main unit 200. DETAILED DESCRIPTION
[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0028] like Figure 1 and Figure 2 As shown, an oil-gas mixing and separation device comprises:
[0029] The cylinder 100 has a hollow cavity therein, and is provided with an air inlet 101 and an air outlet 102 which are respectively connected to the hollow cavity, the air inlet 101 is connected to the screw main unit 200, and the air outlet 102 is connected to an external device;
[0030] The oil-gas separation filter element 103 is arranged in the hollow cavity, and a coarse separation channel is arranged between the oil-gas separation filter element 103 and the cylinder 100;
[0031] The oil storage component is connected with the oil-gas separation filter element 103, and the oil storage component includes an oil storage cavity, which is respectively connected with the oil-gas separation filter element 103 and the screw main unit 200. The lubricating oil precipitated in the oil-gas separation filter element 103 flows into the oil storage cavity. Whenever the lubricating oil in the oil storage cavity exceeds the set volume, the lubricating oil in the oil storage cavity flows to the screw main unit 200.
[0032] In this embodiment, small oil droplets that cannot be separated will be carried out with the oil-gas mixture through the oil-gas separation filter 103 for high-precision secondary separation, and the separated lubricating oil will gather on the inner wall of the oil-gas separation filter 103, and under the action of gravity, it will be deposited at the bottom of the oil-gas separation filter 103. In the present application, an oil storage part with an oil storage chamber is added at the bottom of the oil-gas separation filter 103, and the precipitated lubricating oil flows to the oil storage chamber. When the lubricating oil in the oil storage chamber exceeds the set volume, the lubricating oil collected in the oil storage chamber will flow to the screw main unit 200, thereby avoiding the compressed air from re-entering the screw main unit 200, reducing the gas production loss of the screw main unit, and thus improving the energy efficiency of the whole machine.
[0033] Preferably, the oil storage component includes a float-type drain valve 104 , and the oil storage cavity is opened in the float-type drain valve 104 .
[0034] In this embodiment, a float-type drain valve 104 is used as a bearing device for the oil storage chamber, which can block air and discharge oil, isolate the entry of compressed air, and use the rise and fall of the float to drive the valve flap to open or close, so that the oil will be discharged only after the volume exceeds the set volume.
[0035] Further preferably, a Y-type filter 105 is provided between the float-type drain valve 104 and the oil-gas separation filter element 103 to filter the lubricating oil flowing therethrough.
[0036] Further preferably, a ball valve 112 is provided at the waste collection end of the Y-type filter 105, and the filtered impurities collected by the Y-type filter 105 can be released by operating the ball valve 112, which is simple and convenient to operate.
[0037] Preferably, the Y-type filter 105 and the float-type drain valve 104 are connected by a steel pipe, which is corrosion-resistant and has a long service life.
[0038] Further preferably, a guide ring 106 is provided in the cylinder 100 , a gap is provided between the guide ring 106 and the cylinder wall of the cylinder 200 to form a coarse separation channel, and the oil-gas separation filter element 103 is connected to the coarse separation channel.
[0039] In this embodiment, a guide ring 106 is provided in the cylinder 100, the upper end of the guide ring 106 is fixed at the top of the cylinder, and a gap is left between the lower end of the guide ring 106 and the bottom of the cylinder so that it is connected to the oil-gas separation filter element 103 to roughly separate large particle oil droplets in the oil-gas mixture.
[0040] Preferably, an oil drain port 107 is provided at the bottom of the oil-gas separation filter element 103 , and the oil drain port 107 is communicated with the oil storage chamber. In terms of vertical height, the oil storage component is located below the oil drain port 107 .
[0041] Further preferably, a through hole 108 is opened on the cylinder wall of the cylinder 200, and a connecting pipe 109 is arranged at the oil discharge port 107. The connecting pipe 109 extends through the through hole 108 and is connected to the oil storage part. A connecting flange 110 is fixedly arranged at the through hole 108, and the connecting flange 110 is respectively connected and fixed to the connecting pipe 109 and the oil storage part.
[0042] In this embodiment, the float-type drain valve 104 will close the connection with the screw main unit 200 during the oil collection process. Therefore, in order to ensure that the lubricating oil collected at the bottom of the oil-gas separation filter element 103 can smoothly enter the float-type drain valve 104, it is necessary to design an oil storage part to be located below the oil discharge port 107 so that the lubricating oil can flow to the drain valve by gravity, and the float-type drain valve 104 is arranged outside the cylinder 100 for easy inspection and maintenance. In order to ensure the sealing of the cylinder 100, a connecting flange 110 is provided at the through hole 108 to seal it.
[0043] Further preferably, the connecting pipe 109 comprises a bellows, and connecting joints are provided at both ends of the bellows, and the connecting joints are respectively detachably fixedly connected to the oil-gas separation filter element 103 and the connecting flange 110 .
[0044] In this embodiment, a bellows is used as the connecting pipe 109 to change the flow direction of the lubricating oil and facilitate connection with the connecting flange 110 .
[0045] Further preferably, a connecting ring 111 is fixedly provided on the outer cylinder wall at the through hole 108 , and the connecting ring 111 is fixed to the connecting flange 110 , and the connecting flange 110 is fixed to the cylinder 100 to seal the through hole 108 .
[0046] It should be noted that in the present utility model, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.
[0047] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0048] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. An oil-gas mixing and separation device, characterized in that: include: A cylinder, wherein a hollow cavity is arranged in the cylinder, and an air inlet and an air outlet are arranged on the cylinder, respectively connected to the hollow cavity, the air inlet is connected to the screw main unit, and the air outlet is connected to an external device; An oil-gas separation filter element is arranged in the hollow cavity, and a coarse separation channel is arranged between the oil-gas separation filter element and the cylinder; An oil storage component is connected to the oil-gas separation filter element. The oil storage component includes an oil storage cavity. The oil storage cavity is respectively connected to the oil-gas separation filter element and the screw main unit. The lubricating oil precipitated in the oil-gas separation filter element flows into the oil storage cavity. Whenever the lubricating oil in the oil storage cavity exceeds a set volume, the lubricating oil in the oil storage cavity flows to the screw main unit.
2. The oil-gas mixing and separation device according to claim 1, characterized in that: The oil storage component comprises a float type drain valve, and the oil storage cavity is arranged in the float type drain valve.
3. The oil-gas mixing and separation device according to claim 2, characterized in that: A Y-type filter is provided between the float type drain valve and the oil-gas separation filter element.
4. The oil-gas mixing and separation device according to claim 3, characterized in that: The waste collection end of the Y-type filter is provided with a ball valve.
5. The oil-gas mixing and separation device according to claim 3, characterized in that: The Y-type filter and the float type drain valve are connected through a steel pipe.
6. The oil-gas mixing and separation device according to claim 1, characterized in that: A guide ring is arranged in the cylinder body, a gap is arranged between the guide ring and the cylinder wall of the cylinder body to form a rough separation channel, and the oil-gas separation filter element is connected to the rough separation channel.
7. The oil-gas mixing and separation device according to claim 1, characterized in that: An oil drain port is provided at the bottom of the oil-gas separation filter element, and the oil drain port is communicated with the oil storage cavity. In terms of vertical height, the oil storage component is located below the oil drain port.
8. The oil-gas mixing and separation device according to claim 7, characterized in that: A through hole is opened on the cylinder wall of the cylinder body, a connecting pipe is arranged at the oil discharge port, the connecting pipe extends through the through hole and is connected with the oil storage member, a connecting flange is fixedly arranged at the through hole, and the connecting flange is respectively connected and fixed with the connecting pipe and the oil storage member.
9. The oil-gas mixing and separation device according to claim 8, characterized in that: The connecting pipe comprises a bellows, and connecting joints are arranged at both ends of the bellows. The connecting joints are respectively detachably fixedly connected to the oil-gas separation filter element and the connecting flange.
10. The oil-gas mixing and separation device according to claim 8, characterized in that: A connecting ring is fixedly arranged on the outer cylinder wall at the through hole, and the connecting ring is fixed to the connecting flange.