Oil smoke exhaust device for steam turbine oil tank

Abstract

The utility model relates to the technical field of lampblack discharge, in particular to a lampblack discharge device for a steam turbine oil tank, which comprises a tank body, the upper part of the tank body is a filtering part with a cylindrical structure, the lower part of the tank body is an oil storage part with a conical structure, and the bottom diameter of the oil storage part is smaller than the top diameter; the upper end of the tank body is detachably connected with a cover body, and the lower end is connected with an oil drain valve; a first connecting pipe and a second connecting pipe are arranged on the cover body, a smoke inlet pipe is detachably connected to the first connecting pipe, and an exhaust pipe is detachably connected to the second connecting pipe; a first filter screen is arranged in the filter part; a second filter screen is arranged in the second connecting pipe; through the first filter screen and the second filter screen, oil drops with different particle sizes can be effectively intercepted, and the oil-gas separation quality is improved; after oil smoke enters the tank body, large-particle oil drops settle in the conical oil storage part, tiny oil drops are intercepted by the filter screen, oil stains are prevented from being discharged along with gas, and pollution to the environment is reduced; the cover body is detachably connected with the tank body, so that internal parts are convenient to clean or replace, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a smoke discharging technology field, and specifically relates to a smoke discharging device for a steam turbine oil tank. BACKGROUND

[0002] In the working process of a steam turbine, the smoke discharging device of the main oil tank is essential, which functions to extract the gas, oil fume and water vapor in the main oil tank and maintain the negative pressure in the main oil tank, thus facilitating the smooth return of oil and eliminating the mixing of water vapor into oil to cause oil emulsification. The discharged oil fume is a mixture of oil, water vapor and other substances. If the mixture is directly discharged to the outdoor environment, the oil fume will impact the surrounding pipelines and form oil particles, which will cause oil stains on the pipelines and floor and pollute the environment and pose a production safety hazard.

[0003] At present, the smoke discharging device of the oil tank is usually installed on the smoke outlet of the main body of the steam turbine oil tank, the smoke discharging machine is connected to the air outlet of the smoke discharging pipe, the smoke discharging pipe extends to the outdoor environment, and the end of the smoke discharging pipe located in the outdoor environment is connected to a tee. The smoke and vapor are directly discharged to the sky through the upper branch pipe of the tee, and the remaining oil stains flow into the closed oil tank through the lower branch pipe of the tee for storage.

[0004] The existing steam turbine smoke discharging device has poor oil fume filtering effect, and only relies on the gravity to separate the oil, water and gas. Part of the small liquid oil droplets will be discharged together with the water vapor, which will still pollute the surrounding environment. Therefore, a steam turbine oil tank smoke discharging device with good oil and gas separation effect is needed. SUMMARY

[0005] In view of the deficiencies of the prior art, the utility model aims to provide a steam turbine oil tank smoke discharging device with good oil and gas separation effect.

[0006] The utility model solves the technical problems by adopting the following technical scheme:

[0007] A steam turbine oil tank smoke discharging device, the smoke discharging device comprises a tank body, the upper part of the tank body is a filter part with a cylindrical structure, the lower part is an oil storage part with a conical structure, the bottom diameter of the oil storage part is smaller than the top diameter, the upper end of the tank body is detachably connected with a cover body, and the lower end is connected with an oil discharge valve; a first through hole and a second through hole are arranged on the cover body, a first connecting pipe is connected to the first through hole, a second connecting pipe is connected to the second through hole, a smoke inlet pipe is detachably connected to the first connecting pipe, and an exhaust pipe is detachably connected to the second connecting pipe; a first filter screen is arranged in the filter part; and a second filter screen is arranged in the second connecting pipe.

[0008] The utility model adopts the above technical scheme, and has the following outstanding features compared with the prior art:

[0009] When in use, an oil fume exhaust hood is installed on the oil tank smoke outlet, the oil fume exhaust hood air outlet is connected with the smoke exhaust pipe, and the smoke exhaust pipe extends to the outside and is connected with the smoke inlet pipe; the device can effectively intercept oil droplets of different particle sizes and improve oil gas separation quality by setting the first filter screen in the tank body and the second filter screen in the second connecting pipe; after the oil fume enters the tank body, large particle oil droplets are deposited in the conical oil storage part, and small oil droplets are intercepted by the filter screen, so that the oil stains are prevented from being discharged with the gas and the pollution to the environment is reduced; the cover body and the tank body are detachably connected, so that the first filter screen and the second filter screen can be conveniently cleaned or replaced, and the maintenance cost is reduced; the separated oil stains are collected through the oil discharge valve, leakage is avoided, and the environmental protection requirement is met.

[0010] As preferred, the further technical scheme of the utility model is:

[0011] Preferably, the second connecting pipe is provided with a hanger, the hanger comprises a support rod arranged horizontally, the support rod is welded and fixed to the inner wall of the second connecting pipe at both ends, a rod passing hole is arranged at the middle position of the support rod, a hanger rod is arranged in the rod passing hole, and the upper end of the hanger rod is connected and fixed to the support rod through a first locking nut; a counterweight disc is arranged at the lower end of the hanger rod, the counterweight disc comprises an outer ring and an inner ring, the outer ring and the inner ring are connected through a connecting rib, the lower end of the hanger rod penetrates the inner ring and is fixed to the inner ring through a second locking nut; the second filter screen is located between the support rod and the counterweight disc; the hanger (the support rod, the hanger rod and the counterweight disc) can stably fix the second filter screen, prevent the filter screen from being displaced due to airflow impact, and ensure long-term stable operation.

[0012] Preferably, the second filter screen is provided with two layers and is located at one third and two thirds of the hanger rod respectively.

[0013] Preferably, the two second filter screens are inclined upward by 30-45° and downward by 30-45° respectively relative to the horizontal plane; the double-layer second filter screens are inclined upward and downward by 30° respectively, so that the oil droplet collision probability is increased and the trapping efficiency is improved.

[0014] Preferably, the device further comprises a partition plate, the partition plate has a rectangular structure, the length of the partition plate is equal to the inner diameter of the filter part of the tank body, the partition plate is installed in the filter part, and the filter part is divided into an inlet smoke part and an exhaust smoke part; the inlet smoke part is located at the lower side of the first connecting pipe, and the exhaust smoke part is located at the lower side of the second connecting pipe; a first support rib is arranged on the partition plate, and a second support rib is arranged on the inner wall of the tank body; the first filter screen has a semicircular structure and is arranged horizontally and installed in the inlet smoke part and the exhaust smoke part through the first support rib and the second support rib.

[0015] Preferably, two sliding grooves are symmetrically arranged on the inner side wall of the tank body about the axis, a supporting plate is arranged at the bottom of the sliding groove, the left and right sides of the partition plate are inserted into the tank body through the sliding grooves, and the lower end of the partition plate abuts on the two supporting plates; the partition plate is inserted into the tank body through the sliding grooves and supported on the supporting plates, so that the partition plate is convenient to disassemble and assemble and the maintenance efficiency is improved.

[0016] Preferably, the first filter screen is provided with two layers.

[0017] Preferably, the filter part is provided with an observation port on one side, and a speculum is connected to the observation port.

[0018] Preferably, a 45° elbow is connected to the upper end of the exhaust pipe; rainwater can be prevented from entering the tank body.

[0019] Preferably, a plurality of legs are arranged on the outer side of the tank body in a ring shape, a connecting seat is detachably connected to the upper end of the leg, and the leg is connected and fixed to the tank body through the connecting seat; the connecting seat comprises a bottom connecting plate and a vertical plate, the connecting plate is horizontally arranged and bolted to the upper end of the leg, the vertical plate is vertically arranged and has a right triangle structure, one side of the right angle is welded to the outer wall of the tank body, and the other side of the right angle is welded to the connecting plate; the tank body is detachably connected to the leg through the connecting seat, which is convenient for transportation and installation and adapts to different site requirements. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structure schematic view of the oil fume exhaust device in use in the embodiment of the utility model;

[0021] Figure 2 is a structure schematic view of the tank body in the embodiment of the utility model;

[0022] Figure 3 is a structure schematic view of the hanger in the embodiment of the utility model;

[0023] Figure 4 is a structure schematic view of the counterweight disc in the embodiment of the utility model;

[0024] Figure 5 is a structure schematic view of the second filter screen in the embodiment of the utility model;

[0025] Figure 6 is a structure schematic view of the first filter screen in the embodiment of the utility model.

[0026] BRIEF DESCRIPTION OF DRAWINGS: 1, oil tank; 2, exhaust hood; 3, exhaust pipe; 4, tank body; 401, filter part; 402, oil storage part; 5, cover body; 6, exhaust valve; 7, first connecting pipe; 8, second connecting pipe; 9, smoke inlet pipe; 10, exhaust pipe; 11, first filter screen; 12, second filter screen; 13, partition plate; 14, speculum; 15, 45° elbow; 16, leg; 17, connecting seat; 1701, vertical plate; 1702, connecting plate; 18, hanger; 1801, support rod; 1802, hanger rod; 1803, counterweight disc. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to specific embodiments. The purpose of this description is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0028] like Figure 1 , Figure 2 As shown, this embodiment provides an oil fume extraction device for a steam turbine oil tank. The device includes a tank body 4, with a cylindrical filter section 401 at the top and a conical oil storage section 402 at the bottom. The bottom diameter of the oil storage section 402 is smaller than its top diameter. A cover 5 is detachably connected to the upper end of the tank body 4 via a flange connecting plate 1702, and an oil outlet pipe is provided at the lower end. The oil outlet pipe has external threads and is connected to an oil drain valve 6 via these threads. The cover 5 has a first through hole and a second through hole. A first connecting pipe 7 is connected to the first through hole, and a second connecting pipe 8 is connected to the second through hole. A smoke inlet pipe 9 is detachably connected to the first connecting pipe 7, and an exhaust pipe 10 is detachably connected to the second connecting pipe 8. A first filter screen 11 is installed inside the filter section 401, and a second filter screen 12 is installed inside the second connecting pipe 8. Both the first filter screen 11 and the second filter screen 12 are made of stainless steel. A sealing gasket is provided between the cover 5 and the upper edge of the tank 4. The sealing gasket is made of oil-resistant rubber.

[0029] like Figures 3 to 5 As shown, a hanger 18 is provided inside the second connecting pipe 8. The hanger 18 includes a horizontally arranged support rod 1801. Both ends of the support rod 1801 are welded and fixed to the inner wall of the second connecting pipe 8. A through hole is provided in the middle of the support rod 1801, and a hanger 1802 is provided in the through hole. The upper end of the hanger 1802 is connected and fixed to the support rod 1801 by a first locking nut. A counterweight plate 1803 is provided at the lower end of the hanger 1802. The counterweight plate 1803 includes an outer ring and an inner ring, which are connected by a connecting rib. The lower end of the hanger 1802 passes through the inner ring and is fixed to the inner ring by a second locking nut. The second filter screen 12 is located between the support rod 1801 and the counterweight plate 1803. In this embodiment, the hanger 18 is 220mm high.

[0030] like Figure 3 In this embodiment, both the first filter screen 11 and the second filter screen 12 are provided with two layers. The interval between the two first filter screens 11 is greater than or equal to 100mm, and the two second filter screens 12 are located at one-third and two-thirds of the position of the hanging rod 1802, respectively. One of the two second filter screens 12 is inclined upwards at 30°-45° relative to the horizontal plane, and the other is inclined downwards at 30°-45° relative to the horizontal plane. In this embodiment, the support rod 1801 is made of a steel plate with a length of 150mm, a width of 30mm, and a thickness of 6mm. The second filter screen 12 is a disc structure with a diameter of 140mm and an inclination angle of 30°. The disc is provided with multiple layers of filter holes with a diameter of 6mm.

[0031] Further comprising a partition plate 13, the partition plate 13 is a rectangular structure, the length of the partition plate 13 is equal to the inner diameter of the filter part 401 of the tank body 4, the partition plate 13 is installed in the filter part 401, and the filter part 401 is divided into a smoke inlet part and a smoke exhaust part, the smoke inlet part is located below the first connecting pipe 7, and the smoke exhaust part is located below the second connecting pipe 8; the partition plate 13 is provided with a first supporting rib, and the inner wall of the tank body 4 is provided with a second supporting rib; as shown in the figure, the first filter screen 11 is in a semicircular structure and is horizontally arranged and installed in the smoke inlet part and the smoke exhaust part through the first supporting rib and the second supporting rib. Figure 6

[0032] The inner side wall of the tank body 4 is provided with two sliding grooves symmetrically about the axis, the bottom of the sliding groove is provided with a supporting plate, the left and right sides of the partition plate 13 are inserted into the tank body 4 through the sliding grooves, and the lower end of the partition plate 13 abuts on the two supporting plates; the partition plate 13 is inserted into the tank body 4 through the sliding grooves and supported on the supporting plates, which facilitates disassembly and assembly and improves the maintenance efficiency.

[0033] An observation port is arranged on one side of the filter part 401, and a scope 14 is connected to the observation port; the scope 14 is made of high-temperature-resistant glass, which is convenient for observing the oil level in the tank body 4 and the blockage of the first filter screen 11 and the second filter screen 12, so as to timely drain oil and clean the filter screen.

[0034] A plurality of supporting legs 16 are arranged on the outer side of the tank body 4 in a ring shape, a connecting seat 17 is detachably connected to the upper end of the supporting leg 16, and the supporting leg 16 is connected and fixed with the tank body 4 through the connecting seat 17; the connecting seat 17 comprises a bottom connecting plate 1702 and a vertical plate 1701, the connecting plate 1702 is horizontally arranged and is bolted and fixed with the upper end of the supporting leg 16, and the vertical plate 1701 is vertically arranged and is in a right triangle structure, one side of the right angle is welded and fixed with the outer wall of the tank body 4, and the other side of the right angle is welded and fixed with the connecting plate 1702; the supporting leg 16 is detachably connected with the connecting seat 17, which is convenient for transportation and installation and adapts to different site requirements; in the embodiment, the supporting legs 16 are distributed in a triangular shape, and the stability is relatively high.

[0035] As shown in the figure, Figure 1 In the embodiment, a 45° elbow 15 is connected to the upper end of the exhaust pipe 10; rainwater can be prevented from entering the tank body 4.

[0036] ​In use, the oil tank 1 is provided with an exhaust hood 2 at the exhaust port, the exhaust hood 2 is connected with an exhaust pipe 3 at the air outlet, and the exhaust pipe 3 extends to the outside and is connected with an inlet pipe 9. The oil fume enters the tank body 4 from the inlet pipe 9, is preliminarily filtered by the first filter screen 11, is secondarily filtered by the second filter screen 12, and the separated oil dirt is accumulated in the oil storage part 402 and is discharged regularly through the oil discharge valve 6, and the purified gas is discharged through the 45° elbow 15. When the first filter screen 11 or the partition plate 13 needs to be cleaned, the cover 5 is first removed, then the first filter screen 11 and the partition plate 13 are taken out for cleaning, when the second filter screen 12 needs to be cleaned, the cover 5 and the exhaust pipe 10 are removed, then the second locking nut below the counterweight disc 1803 is taken off, the first locking nut is rotated counterclockwise from above the second connecting pipe 8 by using a wrench, the hanger rod 1802 and the second filter screen 12 are pulled out, and the cleaning can be carried out.

[0037] The utility model is suitable for coal gas power generation steam turbine lubricating system, realizes high -efficient air, oil fume, water (water vapor) separation through double filtration, simple structure, convenient maintenance, environmental protection and energy saving, can effectively reduce oil fume pollution, is applicable to industrial production.

[0038] The above is only the preferable and can be implemented case of the utility model, and is not therefore limited the right scope of the utility model, and all equivalent changes made by using the utility model specification and its attached drawing contents are contained in the right scope of the utility model.

Claims

1. A fume exhaust device for a steam turbine oil tank, characterized by: The cooking fume exhaust device comprises a tank body (4), the upper part of the tank body (4) is a cylindrical filter part (401), the lower part is a conical oil storage part (402), the bottom diameter of the oil storage part (402) is smaller than the top diameter; the upper end of the tank body (4) is detachably connected with a cover body (5), and the lower end is connected with an oil discharge valve (6); The cover body (5) is provided with a first through hole and a second through hole, a first connecting pipe (7) is connected to the first through hole, and a second connecting pipe (8) is connected to the second through hole; a smoke inlet pipe (9) is detachably connected to the first connecting pipe (7), and an exhaust pipe (10) is detachably connected to the second connecting pipe (8); A first filter screen (11) is arranged in the filter part (401); a second filter screen (12) is arranged in the second connecting pipe (8).

2. The oil mist eliminator for a steam turbine oil tank according to claim 1, characterized by: A hanger (18) is arranged in the second connecting pipe (8), the hanger (18) comprises a horizontally arranged support rod (1801), the two ends of the support rod (1801) are welded and fixed to the inner wall of the second connecting pipe (8), a rod passing hole is arranged at the middle position of the support rod (1801), a hanger rod (1802) is arranged in the rod passing hole, and the upper end of the hanger rod (1802) is connected and fixed to the support rod (1801) through a first locking nut; a counterweight disc (1803) is arranged at the lower end of the hanger rod (1802), the counterweight disc (1803) comprises an outer ring and an inner ring, the outer ring and the inner ring are connected through connecting ribs, the lower end of the hanger rod (1802) penetrates the inner ring and is fixed to the inner ring through a second locking nut; the second filter screen (12) is located between the support rod (1801) and the counterweight disc (1803).

3. The oil mist eliminator for a steam turbine oil tank according to claim 2, characterized by: The second filter screen (12) is provided with two layers, which are located at one third and two thirds of the hanger rod (1802) respectively.

4. The oil mist eliminator for a steam turbine oil tank according to claim 3, characterized by: Two second filter screens (12), one of which is inclined upward by 30°-45° compared with the horizontal plane, and the other is inclined downward by 30°-45° compared with the horizontal plane.

5. The oil mist eliminator for a steam turbine oil tank according to claim 1, characterized by: It also comprises a partition plate (13), the partition plate (13) is of a rectangular structure, the length of the partition plate (13) is equal to the inner diameter of the filter part (401) of the tank body (4), the partition plate (13) is installed in the filter part (401) to divide the filter part (401) into a smoke inlet part and a smoke exhaust part, the smoke inlet part is located below the first connecting pipe (7), and the smoke exhaust part is located below the second connecting pipe (8); the partition plate (13) is provided with a first support rib, and the inner wall of the tank body (4) is provided with a second support rib; The first filter screen (11) is in a semicircular structure and is horizontally arranged and installed in the smoke inlet part and the smoke exhaust part through the first support rib and the second support rib.

6. The oil mist eliminator for a steam turbine oil tank according to claim 5, characterized by: Two sliding grooves are symmetrically arranged on the inner side wall of the tank body (4) about the axis, the bottom of the sliding groove is provided with a supporting plate, and the left and right sides of the partition plate (13) are inserted into the tank body (4) through the sliding grooves, and the lower end of the partition plate (13) abuts on the two supporting plates.

7. The oil mist eliminator for a steam turbine oil tank according to claim 5, characterized by: The first filter screen (11) is provided with two layers.

8. The oil mist eliminator for a steam turbine oil tank according to claim 1, characterized by: An observation port is arranged on one side of the filter part (401), and a viewing mirror (14) is connected to the observation port.

9. The oil mist extractor for a steam turbine oil sump (1) according to claim 1, characterized in that: The upper end of the exhaust pipe (10) is connected with a 45° elbow (15).

10. The oil mist eliminator for a steam turbine oil tank according to claim 1, characterized by: A plurality of legs (16) are arranged on the outer side of the tank body (4) in a ring shape at intervals, and a connecting seat (17) is detachably connected to the upper end of the leg (16), and the leg (16) is connected and fixed with the tank body (4) through the connecting seat (17); the connecting seat (17) comprises a bottom connecting plate (1702) and a vertical plate (1701), the connecting plate (1702) is horizontally arranged and is bolted and fixed with the upper end of the leg (16), and the vertical plate (1701) is vertically arranged and has a right triangle structure, one side of the right angle is welded and fixed with the outer wall of the tank body (4), and the other side of the right angle is welded and fixed with the connecting plate (1702).

Images