Oil tank atomized lubricator of centrifugal compressor

Abstract

The utility model relates to the field of DH centrifugal compressors, in particular to an oil tank atomized lubricator of a centrifugal compressor, which comprises an oil tank body and an oil mist separator, an oil mist pipeline is arranged on the oil tank body, one end of the oil mist pipeline is connected with the oil tank body, and the other end of the oil mist pipeline is communicated with the oil mist separator. The oil mist separator comprises a shell, a filter element and a smoke exhaust pipeline, the filter element is arranged in the shell, an oil return pipe is arranged between the shell and the oil tank body, the upper end of the oil return pipe is located at the bottom of the outer side of the filter element, the lower end of the oil return pipe extends into the oil tank, and the oil return pipe is of a tubular structure made of a transparent steel wire pipe; a smoke exhaust fan is arranged on the smoke exhaust pipeline; the oil fume separation device has the advantages that the oil fume separation effect is good, the oil fume discharged into the atmosphere is obviously reduced, the environment is improved, the lubricating oil can be effectively recycled and separated, and the oil consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the field of DH centrifugal compressors, in particular to an oil tank oil mist device for a centrifugal compressor. Background Art

[0002] During the operation of a centrifugal compressor, an oil pump is usually used to supply oil to force lubrication of the motor bearings, large and small gears and bearings in the compressor. The lubricating oil will return to the oil tank through a pipe after lubrication. The oil smoke generated by high temperature will enter the oil mist separator through the pipe above the oil tank, and then be discharged into the atmosphere through the smoke exhaust fan.

[0003] The existing oil mist separator is filled with stainless steel balls. The oil mist cannot be effectively separated after passing through the stainless steel balls, resulting in large amounts of smoke at the exhaust fan outlet, polluting the environment. In addition, since the existing oil mist separator has a poor separation effect and no reflux device is provided, the compressor consumes a high amount of fuel when running. Summary of the invention

[0004] In order to solve the problem that the existing oil mist separator has poor separation effect, so that large smoke is generated at the smoke exhaust fan outlet, polluting the environment and the oil consumption is high when the compressor is running, the utility model proposes an oil tank oil mist separator for a centrifugal compressor, which has good oil smoke separation effect, reduces the oil smoke discharged into the atmosphere, improves the environment, can effectively recover and separate the lubricating oil, and reduces oil consumption.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] An oil tank oil mist collector for a centrifugal compressor comprises an oil tank body and an oil mist separator, wherein the oil tank body is provided with an oil mist pipeline, one end of the oil mist pipeline is connected to the oil tank body, and the other end of the oil mist pipeline is connected to the oil mist separator;

[0007] The oil mist separator comprises a shell, a filter element and a smoke exhaust pipe, the shell is provided with a filter element inside, an oil return pipe is provided between the shell and the oil tank body, the upper end of the oil return pipe is located at the outer bottom of the filter element, and the lower end of the oil return pipe extends below the oil level inside the oil tank, the oil return pipe is a tubular structure made of a transparent steel wire tube, the upper end of the shell is connected to the smoke exhaust pipe, and the smoke exhaust pipe is provided with a smoke exhaust fan;

[0008] The smoke exhaust pipe is connected to a branch pipe, a valve 1 is arranged on the branch pipe, a non-woven cotton is added to the suction port of the valve 1, and the branch pipe is located between the shell and the smoke exhaust fan.

[0009] Furthermore, a waste oil barrel is arranged at the rear side of the smoke exhaust fan, and the waste oil barrel is connected to the smoke exhaust pipe through a waste oil pipe.

[0010] Furthermore, a vacuum membrane box pressure gauge 1 is provided on the oil tank body for real-time detection of the vacuum degree inside the oil tank body to ensure smooth oil return of the compressor.

[0011] Furthermore, a vacuum membrane box pressure gauge 2 is provided on the smoke exhaust pipe, and the vacuum membrane box pressure gauge 2 is located on one side of the branch pipe. The vacuum degree inside the shell is detected by the vacuum membrane box pressure gauge 2, and the vacuum degree inside the shell is adjusted by valve 1, thereby changing the vacuum degree of the oil tank body.

[0012] Furthermore, the filter element is in a tubular structure, a filling layer is arranged inside the filter element, one end of the oil mist pipe is located inside the filter element, and the filter element is a tubular structure made of glass fiber material.

[0013] Furthermore, two smoke exhaust fans are arranged in parallel, and valve 2 is provided on both the front and rear sides of the two smoke exhaust fans.

[0014] Furthermore, a cover plate is provided above the shell to facilitate replacement of the filter element inside the shell.

[0015] Through the above technical solution, the beneficial effects of the utility model are:

[0016] The utility model enhances the filtering effect of the filter element by arranging a filling layer inside the filter element, and can return the separated lubricating oil to the inside of the oil tank body by arranging an oil return pipe, thereby reducing resource waste and oil smoke discharged into the atmosphere.

[0017] The utility model can detect the vacuum degree inside the oil tank and the shell in real time by arranging vacuum diaphragm box pressure gauge 1, vacuum diaphragm box pressure gauge 2 and valve 1, and adjust through valve 1, so as to ensure that the vacuum degree of the oil tank body is -2KPa, ensure smooth oil return of the compressor unit, and reflect the resistance of the filter element by observing the difference between vacuum diaphragm box pressure gauge 1 and vacuum diaphragm box pressure gauge 2. When the resistance is large, the filter element is replaced in time to ensure the filtering effect of the filter element.

[0018] The utility model arranges two smoke exhaust fans and valve 2 in parallel, and only one smoke exhaust fan is used during use. When a smoke exhaust fan fails, the operation can be quickly switched to another smoke exhaust fan, thereby reducing the influence of the failure of the smoke exhaust fan in use on the vacuum degree of the oil tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of an oil tank oil mist device for a centrifugal compressor of the utility model;

[0020] Figure 2 The utility model is a top view schematic diagram of a smoke exhaust fan in an oil tank oil mist device of a centrifugal compressor.

[0021] The reference numerals in the accompanying drawings are:

[0022] 1 is the oil tank body, 2 is the oil mist pipe, 3 is the shell, 4 is the filter element, 5 is the smoke exhaust pipe, 6 is the oil return pipe, 7 is the smoke exhaust fan, 8 is the valve one, 9 is the waste oil barrel, 10 is the vacuum diaphragm box pressure gauge one, 11 is the vacuum diaphragm box pressure gauge two, and 12 is the valve two. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0024] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "horizontal", "vertical" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] Embodiment 1

[0026] like Figure 1-2 As shown, an oil tank oil mist collector for a centrifugal compressor comprises an oil tank body 1 and an oil mist separator, wherein the oil tank body 1 is provided with an oil mist pipe 2, one end of the oil mist pipe 2 is connected to the oil tank body 1, and the other end of the oil mist pipe 2 is connected to the oil mist separator;

[0027] The oil mist separator comprises a shell 3, a filter element 4 and a smoke exhaust pipe 5. The filter element 4 is arranged inside the shell 3. An oil return pipe 6 is arranged between the shell 3 and the oil tank body 1. The upper end of the oil return pipe 6 is located at the outer bottom of the filter element 4, and the lower end of the oil return pipe 6 extends below the oil level inside the oil tank. The oil return pipe 6 is a tubular structure made of a transparent steel wire tube. The lubricating oil separated by the filter element 4 can be returned to the inside of the oil tank body 1 through the oil return pipe 6. The upper end of the shell 3 is connected to the smoke exhaust pipe 5, and a smoke exhaust fan 7 is arranged on the smoke exhaust pipe 5.

[0028] The smoke exhaust pipe 5 is connected to a branch pipe, and a valve 8 is provided on the branch pipe. The suction port of the valve 8 is added with non-woven cotton to filter the inhaled air. The branch pipe is located between the shell 3 and the smoke exhaust fan 7.

[0029] In addition, a waste oil barrel 9 is arranged at the rear side of the smoke exhaust fan 7, and the waste oil barrel 9 is connected to the smoke exhaust pipe 5 through a waste oil pipe. The lubricating oil at the bottom of the smoke exhaust pipe 5 is recovered through the waste oil barrel 9, thereby reducing resource waste.

[0030] Specifically, a vacuum membrane box pressure gauge 10 is provided on the oil tank body 1 for real-time detection of the vacuum degree inside the oil tank body 1 to ensure smooth oil return of the compressor unit.

[0031] In this embodiment, a vacuum membrane box pressure gauge 2 11 is provided on the smoke exhaust pipe 5, and the vacuum membrane box pressure gauge 2 11 is located on one side of the valve 1 8. The vacuum degree inside the shell 3 is detected by the vacuum membrane box pressure gauge 2 11, and the vacuum degree inside the shell 3 and the tank body 1 is adjusted by the valve 1 8. The difference between the vacuum membrane box pressure gauge 10 and the vacuum membrane box pressure gauge 2 11 can reflect the resistance of the filter element 4, thereby reminding the filter element 4 to be replaced.

[0032] In this embodiment, the filter element 4 is a tubular structure, a filling layer is arranged inside the filter element 4, the filling layer is 95% efficient glass fiber, one end of the oil mist pipe 2 is located inside the filter element 4, and the filter element 4 is a tubular structure made of glass fiber. After the lubricating oil passes through the centrifugal compressor bearing and other parts, there is a large amount of oil vapor inside the oil smoke generated due to the increase in temperature. When the oil vapor flows through the filter element 4 made of fiber, it adheres to the surface of the filter element 4. After condensation, the lubricating oil will gather to the bottom of the filter element 4 under the action of gravity.

[0033] In this embodiment, two smoke exhaust fans 7 are arranged in parallel, one for use and one for backup. Both front and rear sides of the two smoke exhaust fans 7 are provided with valves 12 for switching out the faulty smoke exhaust fan for maintenance without affecting the vacuum degree of the oil tank body.

[0034] In this embodiment, a cover plate is provided above the shell 3 to facilitate replacement of the filter element 4 inside the shell 3 .

[0035] It is worth mentioning that the oil mist pipe 2 described in the present application is a DN100 pipe, the return oil pipe 6 is a DN20 pipe, the lower end of the return oil pipe 6 is 20 cm away from the bottom of the oil tank body 1, the smoke exhaust fan 7 is a 1RB410H55 type 5.5kW three-phase vortex air pump with a flow rate of 530m3 / h, a maximum vacuum of -30KPa, 2850r / min, and the valve 8 is a DN50 gate valve.

[0036] Please refer to the actual application Figure 1-2 By setting a valve 8, the vacuum degree inside the oil tank is controlled at about -2KPa, and the oil smoke in the oil tank body 1 will be sucked into the filter element 4. After the oil smoke is filtered by the filter element 4, the oil droplets gather at the bottom of the filter element 4 and flow back to the inside of the oil tank body 1 through the oil return pipe 6, and the smoke is discharged through the exhaust pipe 5;

[0037] The resistance of the filter element 4 can be reflected by observing the difference between the vacuum diaphragm pressure gauge 10 and the vacuum diaphragm pressure gauge. When the resistance is large, the oil level in the oil return pipe 6 can be observed to rise continuously and almost reach the bottom of the oil mist collector. At this time, the filter element 4 needs to be replaced.

[0038] After actual application, the smoke exhausted by the smoke exhaust duct 5 is significantly cleaner, reducing air pollution, and compared with the prior art, the oil level in the oil tank body 1 drops by about 70 mm per month, and one barrel of oil needs to be added per month. The oil tank oil mist device in the present application reduces the oil level in the oil tank body 1 by about 5 mm per month, and one barrel of oil is added per year, and the oil consumption is significantly reduced.

[0039] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A centrifugal compressor oil tank lubricator, characterized in that: It comprises an oil tank body (1) and an oil mist separator, wherein the oil tank body (1) is provided with an oil mist pipe (2), one end of the oil mist pipe (2) is connected to the oil tank body (1), and the other end of the oil mist pipe (2) is connected to the oil mist separator; The oil mist separator comprises a housing (3), a filter element (4) and a smoke exhaust pipe (5); the housing (3) is provided with a filter element (4); an oil return pipe (6) is provided between the housing (3) and the oil tank body (1); the upper end of the oil return pipe (6) is located at the bottom of the outer side of the filter element (4); the lower end of the oil return pipe (6) extends below the oil level inside the oil tank; the upper end of the housing (3) is connected to the smoke exhaust pipe (5); and a smoke exhaust fan (7) is provided on the smoke exhaust pipe (5); The smoke exhaust pipe (5) is connected to a branch pipe, a valve 1 (8) is provided on the branch pipe, and the branch pipe is located between the housing (3) and the smoke exhaust fan (7).

2. The oil tank lubricator for a centrifugal compressor according to claim 1, characterized in that: A waste oil barrel (9) is arranged at the rear side of the smoke exhaust fan (7), and the waste oil barrel (9) is connected to the smoke exhaust pipe (5) via a waste oil pipe.

3. The oil tank lubricator for a centrifugal compressor according to claim 1, characterized in that: The oil tank body (1) is provided with a vacuum membrane box pressure gauge 1 (10).

4. The oil tank lubricator for a centrifugal compressor according to claim 1, characterized in that: The smoke exhaust pipe (5) is provided with a second vacuum membrane box pressure gauge (11), and the second vacuum membrane box pressure gauge (11) is located on one side of the first valve (8).

5. The oil tank lubricator for a centrifugal compressor according to claim 1, characterized in that: The filter element (4) is in a tubular structure, a filling layer is provided inside the filter element (4), and one end of the oil mist pipeline (2) is located inside the filter element (4).

6. The oil tank lubricator for a centrifugal compressor according to claim 1, characterized in that: The smoke exhaust fans (7) are arranged in parallel in two units, and valve 2 (12) is arranged on both the front and rear sides of the two smoke exhaust fans (7).

7. The oil tank lubricator for a centrifugal compressor according to claim 1, characterized in that: A cover plate is arranged above the shell (3).

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