Venturi bubbling degassing device

Abstract

The utility model relates to the field of bubbling separation technical devices, in particular to a venturi bubbling degassing device, which solves the problem that the bubbling degassing efficiency is affected due to the fact that a diaphragm of a diaphragm pump in the prior art is easy to break. Comprising an oil tank and an oil pump, the oil pump is arranged outside the oil tank, an outlet of the oil pump is connected with an oil inlet of the oil tank through a third pipeline, a jet pipe is arranged between the oil pump and the oil tank to treat air in oil, an inlet of the jet pipe is connected with an oil outlet of the oil tank through a first pipeline, and an outlet of the jet pipe is connected with an inlet of the oil pump through a second pipeline; the bubbling effect of a diaphragm pump is replaced with the mode that a jet pipe generates the Venturi effect, gas escaping from oil is sucked in through the jet pipe to form a gas-liquid mixture with circulating oil, then the gas-liquid mixture is injected into an oil tank through an oil pump to conduct bubbling, oil sample scattering and gas escaping speed increasing on an oil sample in the oil tank, and after multiple circulating processes, the gas escaping speed is increased. Gas in oil can be completely discharged, the jet pipe structure is not prone to damage, and continuity and stability of production are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of bubbling separation technical devices, in particular to a Venturi bubbling degassing device. Background Art

[0002] When the hydraulic system is working, the air mixed in the oil exists in the form of bubbles and occupies a certain space, just like particulate pollutants, which has a very harmful effect on the system. When the bubbles are compressed as the oil enters the high-pressure area from the low-pressure area, they collapse or shrink rapidly, causing the oil to lose its incompressibility. At the same time, the surrounding oil particles rush to the center of the bubble at high speed, causing impact, converting kinetic energy into pressure energy and heat energy, causing temperature rise, noise, cavitation and vibration, resulting in reduced efficiency, deterioration of lubrication conditions, insufficient pressure in the drive system and soft operation, which affects the performance and reliability of the system, shortens the service life of components, and in severe cases damages the machine. In addition, under high-pressure and high-temperature environmental conditions, air can easily cause the hydraulic oil to oxidize and deteriorate and generate harmful acidic substances or colloidal precipitates, corroding metal parts, etc.

[0003] Bubble degassing is a commonly used degassing technology. A bubble pump is used to bubble the oil to form an oil-gas mixture, break up the oil sample, increase the oil film, and accelerate the gas overflow rate. When our company used a diaphragm pump for bubbling degassing, it was found that due to the large internal and external pressure difference and the corrosion of oil mist, the diaphragm pump's diaphragm was prone to rupture. Frequent repairs of the diaphragm pump reduced production efficiency. This plan was launched in this context. Utility Model Content

[0004] Based on the above description, the utility model provides a Venturi bubbling degassing device to solve the problem in the prior art that the diaphragm of the diaphragm pump is easily broken, which affects the bubbling degassing efficiency.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A Venturi bubbling degassing device, comprising:

[0007] The oil tank has an oil inlet and an oil outlet connected to the oil layer at the bottom, and an exhaust port connected to the air layer at the top;

[0008] an oil pump, the outlet of which is connected to the oil inlet via a third pipeline;

[0009] The jet pipe has an inlet connected to the oil outlet through a first pipeline, an outlet connected to the oil pump through a second pipeline, and a measuring pipe connected to the exhaust port through a fourth pipeline.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, a first solenoid valve is provided at the oil outlet to control the opening and closing of the first pipeline.

[0012] Furthermore, a second solenoid valve is provided on the second pipeline to control the opening and closing of the second pipeline.

[0013] Furthermore, a third solenoid valve is provided on the third pipeline to control the opening and closing of the third pipeline.

[0014] Furthermore, a fourth solenoid valve is provided at the oil inlet to control the opening and closing of the third pipeline.

[0015] Furthermore, the exhaust port is connected to an exhaust pipeline, and a fifth solenoid valve is provided at the exhaust port to control the opening and closing of the exhaust pipeline.

[0016] Furthermore, the height of the oil inlet is 30 mm lower than that of the oil outlet.

[0017] Furthermore, the air layer pressure is 10 kPa.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0019] The Venturi effect produced by the jet tube replaces the diaphragm pump for bubbling. This solution has a two-step degassing effect: 1. The air layer of the oil tank is at negative pressure. According to Henry's law, when the pressure decreases, the gas solubility decreases, and the gas in the oil is easier to escape; 2. The escaped gas is sucked into the jet tube and forms a gas-liquid mixture with the circulating oil, and then injected into the oil tank through the oil pump to bubble the oil sample in the tank, break up the oil sample, and accelerate the gas escape rate. After several rounds of circulation, all the gas in the oil can be discharged. The jet tube has a simple structure and is not easy to damage, which ensures the continuity and stability of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a Venturi bubbling degassing device provided in an embodiment of the utility model;

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Oil tank; 2. Oil pump; 3. Jet pipe; 4. First solenoid valve; 5. Second solenoid valve; 6. Third solenoid valve; 7. Fourth solenoid valve; 8. Fifth solenoid valve; 9. First pipeline; 10. Second pipeline; 11. Third pipeline; 12. Fourth pipeline. DETAILED DESCRIPTION

[0023] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0026] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0027] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0028] like Figure 1A Venturi bubbling degassing device is shown, comprising an oil tank 1 and an oil pump 2. The oil tank 1 is filled with oil, and the interior is layered into an oil layer at the bottom and an air layer at the top. An oil inlet and an oil outlet connected to the oil layer are provided at the bottom of the oil tank 1, and an exhaust port connected to the air layer is provided at the top. The oil pump 2 is arranged outside the oil tank 1, and the outlet of the oil pump 2 is connected to the oil inlet of the oil tank 1 through a third pipeline 11.

[0029] A jet tube 3 is arranged between the oil pump 2 and the oil tank 1 to process the air in the oil. The jet tube 3 has an inlet, an outlet and a measuring pipe opening. The inlet of the jet tube 3 is connected to the oil outlet of the oil tank 1 through a first pipeline 9, the outlet of the jet tube 3 is connected to the inlet of the oil pump 2 through a second pipeline 10, and the measuring pipe of the jet tube 3 is connected to the exhaust port of the oil tank 1 through a fourth pipeline 12. Before starting the device, the air layer needs to be decompressed to make it negative pressure, that is, a vacuum is formed inside the fourth pipeline 12 connected thereto, and a Venturi effect is generated when the oil passes through the jet tube 3, and the negative pressure air is mixed with the oil from the fourth pipeline 12 and enters the third pipeline 11, and is injected into the oil tank 1 through the oil pump 2.

[0030] There are two degassing effects in this process: 1. The air layer of the oil tank 1 is under negative pressure. According to Henry's law, when the pressure decreases, the gas solubility decreases, and the gas in the oil is more likely to escape; 2. The escaped gas is sucked through the jet tube 3 to form a gas-liquid mixture with the circulating oil, and then injected into the oil tank 1 through the oil pump 2 to bubble the oil sample in the tank, break up the oil sample, and accelerate the gas escape speed. After several rounds of circulation, all the gas in the oil is discharged.

[0031] The jet pipe 3 needs to be designed between the oil tank 1 and the oil pump 2 to avoid circulation failure.

[0032] Specifically, the air layer pressure is 10 kPa, and the height of the oil inlet is 30 mm lower than the oil outlet.

[0033] In order to improve the control of the entire oil circuit, a first solenoid valve 4 is provided at the oil outlet of the oil tank 1 to control the opening and closing of the first pipeline 9. A second solenoid valve 5 may be provided on the second pipeline 10 to control the opening and closing of the second pipeline 10. A third solenoid valve 6 may be provided on the third pipeline 11 to control the opening and closing of the third pipeline 11. A fourth solenoid valve 7 may be provided at the oil inlet to control the opening and closing of the third pipeline 11. An exhaust pipeline (equipped with corresponding exhaust equipment) is connected to the exhaust port of the oil tank 1, and a fifth solenoid valve 8 is provided at the exhaust port to control the opening and closing of the exhaust pipeline.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A Venturi bubbling degassing device, characterized in that: include: The oil tank has an oil inlet and an oil outlet connected to the oil layer at the bottom, and an exhaust port connected to the air layer at the top; an oil pump, the outlet of which is connected to the oil inlet via a third pipeline; The jet pipe has an inlet connected to the oil outlet through a first pipeline, an outlet connected to the oil pump through a second pipeline, and a measuring pipe connected to the exhaust port through a fourth pipeline.

2. A Venturi bubbling degassing device according to claim 1, characterized in that: A first solenoid valve is arranged at the oil outlet to control the opening and closing of the first pipeline.

3. A Venturi bubbling degassing device according to claim 1, characterized in that: The second pipeline is provided with a second solenoid valve to control the opening and closing of the second pipeline.

4. A Venturi bubbling degassing device according to claim 1, characterized in that: The third pipeline is provided with a third solenoid valve to control the opening and closing of the third pipeline.

5. A Venturi bubbling degassing device according to claim 1, characterized in that: A fourth solenoid valve is arranged at the oil inlet to control the opening and closing of the third pipeline.

6. A Venturi bubbling degassing device according to claim 1, characterized in that: The exhaust port is connected to an exhaust pipeline, and a fifth solenoid valve is arranged at the exhaust port to control the opening and closing of the exhaust pipeline.

7. A Venturi bubbling degassing device according to claim 1, characterized in that: The height of the oil inlet is 30 mm lower than that of the oil outlet.

8. A Venturi bubbling degassing device according to claim 1, characterized in that: The air layer pressure is 10 kPa.

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