Oil-gas separation device of steam turbine

Abstract

The utility model relates to the technical field of oil-gas separation, in particular to an oil-gas separation device of a steam turbine, which not only can separate out gas in lubricating oil, but also can separate out solid impurities in the lubricating oil, prolongs the service life of the lubricating oil, and is convenient to use and high in reliability and practicability. Comprising a delivery pump and a drain pipe, and the input end of the delivery pump is connected with the drain pipe; a cavity is formed in the box body, the exhaust device is arranged on the upper portion of the box body and used for exhausting gas in the cavity of the box body, the output end of the conveying pump is communicated with the cavity of the box body through the filtering device, the filtering device is provided with a filtering function, and the liquid discharging funnel is arranged on the lower portion of the box body. A backflow pipe is arranged on the liquid discharging funnel, and a connector is arranged at the output end of the backflow pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-gas separation, in particular to an oil-gas separation device for a steam turbine. Background Art

[0002] A steam turbine is an external combustion rotary machine that can convert steam heat energy into mechanical work. It uses steam to drive the rotor on the turbine to rotate, thereby achieving energy conversion. When some large steam turbines are running, a small amount of gas will enter the bearing box through the gap or cutout on the bearing box and mix with the lubricating oil, causing the lubricating oil to contain gas and reduce the lubrication quality. Therefore, large steam turbines need to be equipped with oil-gas separation equipment to separate the gas from the lubricating oil.

[0003] In the prior art, a utility model patent with patent application number 201920139202.2 discloses an oil-gas separation device, which is mainly composed of an oil-gas separation plate and an exhaust pipe. When separating the gas in the oil, the gas in the lubricating oil is separated by centrifugation. The inventor believes that its application in a steam turbine has the following problems. When separating the oil and gas in the lubricating oil, it can only separate the gas in the lubricating oil, but cannot separate the impurities entrained in the lubricating oil during use. Therefore, when the lubricating oil flows back to the bearing box for use, the impurities in the lubricating oil will still affect the lubricating effect of the lubricating oil, resulting in its inconvenience in use. Therefore, an oil-gas separator with the function of removing impurities in the oil is needed. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a turbine oil-gas separation device which can not only separate the gas in the lubricating oil, but also separate the solid impurities in the lubricating oil, thereby improving the service life of the lubricating oil, being easy to use, and having high reliability and practicality.

[0005] The utility model relates to a steam turbine oil-gas separation device, comprising a delivery pump and a drainage pipe, wherein the input end of the delivery pump is connected to the drainage pipe; the utility model also comprises a box body, a drainage funnel, a reflux pipe, an exhaust device and a filter device, wherein a chamber is arranged in the box body, an exhaust device is arranged at the upper part of the box body, the exhaust device is used to exhaust the gas in the chamber of the box body, the output end of the delivery pump is communicated with the chamber of the box body through the filter device, the filter device has a filter, a drainage funnel is arranged at the lower part of the box body, a reflux pipe is arranged on the drainage funnel, and a joint is arranged at the output end of the reflux pipe; the output end of the reflux pipe is connected to the oil inlet of the bearing box on the steam turbine through the oil pump, the input end of the drainage pipe is connected to the oil discharge port of the bearing box on the steam turbine, and when it is necessary to separate the gas in the lubricating oil in the bearing box , turn on the delivery pump, so that the lubricating oil in the bearing box enters the filtering device through the drain pipe and the delivery pump in turn, and then the filtering device filters out the solid impurities in the lubricating oil, and then the filtered lubricating oil enters the chamber of the box body, and then the exhaust device is turned on to discharge the gas in the chamber of the box body, thereby reducing the pressure in the chamber of the box body and promoting the escape of the gas in the lubricating oil in the chamber of the box body, and then the oil pump is turned on to transport the lubricating oil in the chamber of the box body through the drain funnel and the reflux pipe to the bearing box of the steam turbine for reuse; when separating the oil and gas from the lubricating oil, it can not only separate the gas in the lubricating oil, but also separate the solid impurities in the lubricating oil, thereby increasing the service life of the lubricating oil, being easy to use, and having high reliability and practicality.

[0006] Preferably, the exhaust device includes a vacuum pump and an exhaust pipe, the vacuum pump is fixedly installed at the upper end of the box body, the input end of the vacuum pump is connected to the upper part of the box body chamber, the output end of the vacuum pump is connected to the exhaust pipe, and a one-way valve is provided on the exhaust pipe; when the lubricating oil enters the chamber of the box body, the vacuum pump is turned on to discharge the gas in the box body chamber through the vacuum pump and the exhaust pipe, thereby reducing the pressure in the box body chamber, promoting the escape of gas in the lubricating oil in the box body chamber, and improving the oil-gas separation efficiency of the lubricating oil. The utility model is convenient to use and highly practical.

[0007] Preferably, the filtering device includes a U-shaped tube and a filter plate, the input end of the U-shaped tube is connected to the output end of the delivery pump, the output end of the U-shaped tube is connected to the upper part of the chamber of the box, and the filter plate is fixedly installed at the lower part of the U-shaped tube; when the delivery pump is delivering lubricating oil, the delivery pump delivers the lubricating oil to the chamber of the box through the U-shaped tube, and when the lubricating oil passes through the lower part of the U-shaped tube, the lubricating oil is filtered by the filter plate, and the filter plate filters out solid impurities in the lubricating oil, thereby improving the cleanliness of the lubricating oil.

[0008] Preferably, a drain pipe is further included, wherein the lower part of the U-shaped tube is provided with the drain pipe, the input end of the drain pipe is connected with the lower part of the U-shaped tube, the drain pipe is located on the left side of the filter plate, and a valve is provided on the drain pipe; when it is necessary to discharge the solid impurities filtered out by the filter plate, the valve on the drain pipe is opened, so that the solid impurities filtered out by the filter plate can be discharged through the drain pipe and then collected; the collection of solid impurities is facilitated and the convenience is improved.

[0009] Preferably, it also includes multiple groups of guide plates, which are all tilted and fixedly installed in the chamber of the box body; when the lubricating oil enters the chamber of the box body through the U-shaped tube, the lubricating oil slowly flows to the lower part of the chamber of the box body through the multiple groups of guide plates in the chamber of the box body, which promotes the discharge of gas in the lubricating oil and improves convenience.

[0010] Preferably, it also includes a refrigeration plate, which is fixedly mounted on the box body, with the refrigeration end of the refrigeration plate located in the cavity of the box body and the heat dissipation end of the refrigeration plate located outside the box body; when the lubricating oil is subjected to oil-gas separation, the refrigeration plate is opened to reduce the temperature in the cavity of the box body, while promoting the heat dissipation of the lubricating oil, thereby ensuring the service life of the lubricating oil.

[0011] Preferably, a thermometer is also included, and the thermometer is fixedly mounted on the box body; the thermometer facilitates the staff to monitor the temperature in the box cavity, thereby improving convenience.

[0012] Compared with the prior art, the utility model has the following beneficial effects: not only can the gas in the lubricating oil be separated, but also the solid impurities in the lubricating oil can be separated, thereby increasing the service life of the lubricating oil, being easy to use, and having high reliability and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 It is a main structural schematic diagram of the utility model;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of a U-shaped tube;

[0017] Figure 5 yes Figure 4 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0018] Markings in the attached figure: 1. delivery pump; 2. discharge pipe; 3. box; 4. discharge funnel; 5. reflux pipe; 6. vacuum pump; 7. exhaust pipe; 8. U-shaped pipe; 9. filter plate; 10. drain pipe; 11. guide plate; 12. thermometer; 14. refrigeration plate. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model 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 utility model more thorough and comprehensive.

[0020] Example 1

[0021] like Figures 1 to 5 The utility model of the steam turbine oil-gas separation device comprises a delivery pump 1, a drain pipe 2, a casing 3, a drain funnel 4, a reflux pipe 5, an exhaust device and a filtering device. The input end of the delivery pump 1 is connected with the drain pipe 2, a chamber is arranged in the casing 3, an exhaust device is arranged on the upper part of the casing 3, the exhaust device is used to discharge the gas in the chamber of the casing 3, the output end of the delivery pump 1 is communicated with the chamber of the casing 3 through the filtering device, the filtering device has a filtering device, a drain funnel 4 is arranged at the lower part of the casing 3, a reflux pipe 5 is arranged on the drain funnel 4, and a joint is arranged at the output end of the reflux pipe 5; the output end of the reflux pipe 5 is connected to the oil inlet of the bearing box on the turbine through the oil pump, the input end of the drain pipe 2 is connected to the oil discharge port of the bearing box on the turbine, when it is necessary to separate the lubricating oil in the bearing box When the gas is discharged, the delivery pump 1 is turned on, so that the lubricating oil in the bearing box enters the filtering device through the discharge pipe 2 and the delivery pump 1 in turn, and then the filtering device filters out the solid impurities in the lubricating oil, and then the filtered lubricating oil enters the chamber of the box body 3, and then the exhaust device is turned on to discharge the gas in the chamber of the box body 3, thereby reducing the pressure in the chamber of the box body 3 and promoting the gas in the lubricating oil in the chamber of the box body 3 to escape, and then the oil pump is turned on to transport the lubricating oil in the chamber of the box body 3 through the discharge funnel 4 and the reflux pipe 5 to the bearing box of the turbine for reuse; when separating the oil and gas from the lubricating oil, it can not only separate the gas in the lubricating oil, but also separate the solid impurities in the lubricating oil, thereby increasing the service life of the lubricating oil, being easy to use, and having high reliability and practicality.

[0022] like Figure 2 The exhaust device includes a vacuum pump 6 and an exhaust pipe 7. The vacuum pump 6 is fixedly installed at the upper end of the box body 3. The input end of the vacuum pump 6 is communicated with the upper part of the chamber of the box body 3. The output end of the vacuum pump 6 is connected to the exhaust pipe 7. A one-way valve is arranged on the exhaust pipe 7. When the lubricating oil enters the chamber of the box body 3, the vacuum pump 6 is turned on to discharge the gas in the chamber of the box body 3 through the vacuum pump 6 and the exhaust pipe 7, thereby reducing the pressure in the chamber of the box body 3, promoting the escape of gas in the lubricating oil in the chamber of the box body 3, and improving the oil-gas separation efficiency of the lubricating oil. The utility model is convenient to use and has high practicality.

[0023] like Figure 1 and Figure 4The filtering device includes a U-shaped tube 8 and a filter plate 9. The input end of the U-shaped tube 8 is connected to the output end of the delivery pump 1, and the output end of the U-shaped tube 8 is connected to the upper part of the chamber of the box body 3. The filter plate 9 is fixedly installed at the lower part of the U-shaped tube 8; when the delivery pump 1 is delivering the lubricating oil, the delivery pump 1 delivers the lubricating oil to the chamber of the box body 3 through the U-shaped tube 8. When the lubricating oil passes through the lower part of the U-shaped tube 8, the lubricating oil is filtered by the filter plate 9. The filter plate 9 filters out solid impurities in the lubricating oil, thereby improving the cleanliness of the lubricating oil.

[0024] like Figure 2 , multiple groups of guide plates 11 are all tilted and fixedly installed in the chamber of the box body 3; when the lubricating oil enters the chamber of the box body 3 through the U-shaped tube 8, the lubricating oil slowly flows to the lower part of the chamber of the box body 3 through the multiple groups of guide plates 11 in the chamber of the box body 3, which promotes the discharge of gas in the lubricating oil and improves convenience.

[0025] like Figure 2 , the refrigeration plate 14 is fixedly mounted on the box 3, the refrigeration end of the refrigeration plate 14 is located in the chamber of the box 3, and the heat dissipation end of the refrigeration plate 14 is located outside the box 3; when the lubricating oil is separated from the gas, the refrigeration plate 14 is opened to reduce the temperature in the chamber of the box 3, and at the same time promote the heat dissipation of the lubricating oil, thereby ensuring the service life of the lubricating oil. The thermometer 12 is fixedly mounted on the box 3; the thermometer 12 facilitates the staff to monitor the temperature in the chamber of the box 3, thereby improving convenience.

[0026] Example 2

[0027] like Figure 5 On the basis of Example 1, a drain pipe 10 is arranged at the lower part of the U-shaped tube 8, the input end of the drain pipe 10 is connected with the lower part of the U-shaped tube 8, the drain pipe 10 is located on the left side of the filter plate 9, and a valve is arranged on the drain pipe 10; when it is necessary to discharge the solid impurities filtered out by the filter plate 9, the valve on the drain pipe 10 is opened, so that the solid impurities filtered out by the filter plate 9 can be discharged through the drain pipe 10 and then collected; the collection of solid impurities is facilitated and the convenience is improved.

[0028] The delivery pump 1, drainage funnel 4, vacuum pump 6, thermometer 12 and refrigeration plate 14 of the turbine oil-gas separation device of the utility model are all purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A steam turbine oil-gas separation device, comprising a delivery pump (1) and a discharge pipe (2), wherein the input end of the delivery pump (1) is connected to the discharge pipe (2); characterized in that: The invention also comprises a box body (3), a liquid discharge funnel (4), a reflux pipe (5), an exhaust device and a filter device. A chamber is arranged in the box body (3). The upper part of the box body (3) is provided with an exhaust device, and the exhaust device is used to exhaust the gas in the chamber of the box body (3). The output end of the delivery pump (1) is connected to the chamber of the box body (3) through the filter device. The filter device has a filter. The lower part of the box body (3) is provided with a liquid discharge funnel (4). The liquid discharge funnel (4) is provided with a reflux pipe (5). The output end of the reflux pipe (5) is provided with a joint.

2. The steam turbine oil-gas separation device according to claim 1, characterized in that: The exhaust device comprises a vacuum pump (6) and an exhaust pipe (7); the vacuum pump (6) is fixedly mounted on the upper end of the box body (3); the input end of the vacuum pump (6) is communicated with the upper part of the chamber of the box body (3); the output end of the vacuum pump (6) is connected to the exhaust pipe (7); and a one-way valve is provided on the exhaust pipe (7).

3. The steam turbine oil-gas separation device according to claim 1, characterized in that: The filtering device comprises a U-shaped tube (8) and a filter plate (9); the input end of the U-shaped tube (8) is connected to the output end of the delivery pump (1); the output end of the U-shaped tube (8) is connected to the upper part of the chamber of the box body (3); and the filter plate (9) is fixedly mounted on the lower part of the U-shaped tube (8).

4. The steam turbine oil-gas separation device according to claim 3, characterized in that: It also comprises a sewage discharge pipe (10), the lower part of the U-shaped pipe (8) is provided with the sewage discharge pipe (10), the input end of the sewage discharge pipe (10) is connected with the lower part of the U-shaped pipe (8), the sewage discharge pipe (10) is located on the left side of the filter plate (9), and a valve is provided on the sewage discharge pipe (10).

5. The steam turbine oil-gas separation device according to claim 1, characterized in that: It also includes a plurality of groups of guide plates (11), which are all tilted and fixedly installed in the chamber of the box body (3).

6. The steam turbine oil-gas separation device according to claim 1, characterized in that: It also includes a refrigeration plate (14), which is fixedly mounted on the box body (3), a refrigeration end of the refrigeration plate (14) is located in the cavity of the box body (3), and a heat dissipation end of the refrigeration plate (14) is located outside the box body (3).

7. The steam turbine oil-gas separation device according to claim 1, characterized in that: It also includes a thermometer (12), which is fixedly mounted on the box body (3).

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