Leakage-proof housing for bearing of steam turbine

Abstract

The utility model relates to the technical field of centering tools, in particular to a steam turbine bearing leakproof housing which comprises a housing connecting part, and a plurality of screw holes are formed in the side face of the housing connecting part. An oil baffle plate is detachably connected to the inner surface of the housing connecting part and is positioned below the exhaust port; an inner ring flange is inserted into one side of the housing connecting part, a through hole corresponding to the screw hole is formed in the side face of the inner ring flange, the screw hole is in threaded connection with a guide column, and one side, away from the screw hole, of the guide column is in threaded connection with a nut; the outer side of the guide column is sleeved with a jackscrew, the jackscrew is in threaded connection with the inner ring flange, the outer side of the jackscrew is slidably connected with a sleeve, and the sleeve is located between the nut and the housing connecting component; according to the main oil baffle plate, the vertical plates on the two sides are additionally arranged, and through the height difference of the vertical plates, smooth emission of oil smoke of a bearing is achieved, and leakage of lubricating oil is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to lubricating oil anti -leakage technical field, concretely is a steam turbine bearing anti -leakage cover shell. BACKGROUND

[0002] The steam turbine, compressor, gear box used in petrochemical industry, natural gas delivery liquefaction, nitrogenous fertilizer factory and large -scale energy storage and CCUS project belong to continuous operation equipment, and the equipment operation environment usually requires fire prevention and explosion prevention, so that the oil leakage prevention setting needs to be carried out, so that the oil leakage prevention cover shell and its thermal expansion absorption device are set up, and when the compressor operates, part of the liquid will return to the oil tank from the lubricating oil return pipe, and the other part of the fluid not realizing oil gas separation will form oil mist under the action of centrifugal force, and the oil smoke is discharged to the outside of the compressor from the bearing oil smoke discharge port, after this situation occurs, first, the bearing oil smoke discharge will be affected, second, the lubricating oil leakage phenomenon will be produced, the safety hidden danger is caused, the safe operation of the compressor is affected, so the oil baffle needs to be set up, the splashing lubricating oil liquid is prevented from entering the oil smoke discharge port, the oil liquid is prevented from being discharged with the oil smoke, the loss and waste of the lubricating oil are reduced.

[0003] But there are following problems in the prior art, 1, due to the misalignment of the installation of the thermal expansion absorption device, the long time operation of the equipment causes the cantilever to sink and leak oil, etc., which causes oil leakage; 2, the cover shell thermal expansion absorption device is removed in a complicated way, needs to be removed by knocking, time -consuming and labor -intensive; 3, the traditional oil baffle structure is a end plate welded on the end flange, which will block part of the lubricating oil leakage, but the lubricating oil will still leak from both sides of the oil baffle, and the oil blocking effect is poor. UTILITY MODEL CONTENTS

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a steam turbine bearing anti -leakage cover shell.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a steam turbine bearing anti -leakage cover shell, including cover shell connecting part, the top of cover shell connecting part is equipped with exhaust port, the bottom of cover shell connecting part is equipped with oil return port, the side surface of cover shell connecting part is equipped with a plurality of screw holes;The inner surface of cover shell connecting part is detachably connected with oil baffle, and the oil baffle is located below the exhaust port;The side surface of the inner ring flange inserted in one side of the cover shell connecting part is equipped with a through hole corresponding to the screw hole, and the screw hole is connected with the guide column in the threaded connection, and the guide column penetrates the inner ring flange, and the guide column is connected with the nut in the threaded connection far away from the screw hole side;The outer side of the guide column is sleeved with a jackscrew, and the jackscrew is connected with the inner ring flange in the threaded connection, and one end of the jackscrew abuts against the cover shell connecting part;The outer side of the jackscrew is slidably connected with a sleeve, and the sleeve is located between the nut and the cover shell connecting part;The insertion surface of the inner ring flange is fixed with an O -ring, and the O -ring abuts against the contact surface of the cover shell connecting part.

[0006] As a further preferred embodiment of the utility model, the bottom of the cover connecting part is threadedly connected with an oil return baffle, the side of the oil return baffle is in the shape of a Chinese character '' and the top surface thereof is in the shape of a downward arc, and the two side portions thereof are connected to the cover connecting part.

[0007] The oil return baffle is arranged to avoid rapid leakage of lubricating oil.

[0008] As a further preferred embodiment of the utility model, the oil baffle comprises a short vertical plate, a long vertical plate and a bottom plate, the bottom plate is fixed to the inner surface of the cover connecting part by means of bolts, the short vertical plate and the long vertical plate are fixed to the upper surface of the bottom plate, the upper surface of the long vertical plate is in the shape of an arc and is attached to the inner surface of the cover connecting part, and a gap exists between the upper surface of the short vertical plate and the inner surface of the cover connecting part.

[0009] The arrangement of the above structure avoids leakage of lubricating oil and the short vertical plate is arranged for smoke discharge.

[0010] As a further preferred embodiment of the utility model, a hexagonal rotating opening is formed in the side of the guide column away from the cover connecting part.

[0011] The arrangement of the above structure is for rotation of the guide column.

[0012] As a further preferred embodiment of the utility model, the outer layer of the sleeve is in the shape of a hexagon, a plurality of transmission grooves are arranged on the outer side of the jackscrew, and the sleeve is slidingly connected to the transmission grooves.

[0013] The sleeve is arranged to facilitate rotation of the jackscrew and separation of the inner ring flange and the cover connecting part.

[0014] As a further preferred embodiment of the utility model, an oil collecting opening is arranged at the bottom of the cover connecting part, the oil collecting opening is located below the oil return baffle and is in the shape of a bevel towards the oil return opening.

[0015] The oil collecting opening is arranged to facilitate unified return flow of lubricating oil.

[0016] Technical effects and advantages of the utility model:

[0017] 1. The guide columns are arranged to facilitate centering, synchronous expansion after expansion and sealing by the O-ring, thereby improving the sealing effect and the stability of centering.

[0018] 2. The jackscrew is arranged to facilitate separation of the inner ring flange and the cover connecting part, thereby reducing the difficulty of disassembly, avoiding deformation by knocking and damage by vibration and improving the service life of the device.

[0019] 3. The utility model discloses a total oil baffle increases both sides riser, through the height difference of riser, realized the smooth discharge of bearing oil fume, reduced lubricating oil leakage. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structure diagram of a steam turbine bearing anti - leakage cover shell of the utility model.

[0021] Figure 2 It is Figure 1 The structure diagram of A place.

[0022] Figure 3 It is Figure 2 The internal structure diagram of.

[0023] Figure 4 It is the structure diagram of cover shell connecting part in the utility model.

[0024] Figure 5 It is the side view of cover shell connecting part in the utility model.

[0025] Figure 6 It is the structure diagram of oil baffle in the utility model.

[0026] Figure 7 It is the side view of oil baffle in the utility model.

[0027] Figure 8 It is the structure diagram of sleeve in the utility model.

[0028] The figure mark is: 1, exhaust port, 2, cover shell connecting part, 3, screw hole, 4, oil baffle, 5, oil return baffle, 6, oil collecting port, 7, oil return port, 8, guide column, 9, nut, 10, sleeve, 11, jackscrew, 12, inner ring flange, 13, O -ring, 14, transmission groove, 15, hexagonal rotating port, 401, short riser, 402, long riser, 403, bottom plate. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0030] Refer to the drawings Figures 1-5As shown in the figure, a steam turbine bearing leak-proof shell includes a shell connecting part 2, the top of the shell connecting part 2 is provided with an exhaust port 1, the bottom of the shell connecting part 2 is provided with an oil return port 7, and the side of the shell connecting part 2 is provided with a plurality of screw holes 3; the inner surface of the shell connecting part 2 is detachably connected with an oil baffle 4, the oil baffle 4 is located below the exhaust port 1; a inner ring flange 12 is inserted into one side of the shell connecting part 2, the side of the inner ring flange 12 is provided with a through hole corresponding to the screw hole 3, the screw hole 3 is threadedly connected with a guide column 8, the guide column 8 penetrates the inner ring flange 12, and the side, away from the screw hole 3, of the guide column 8 is threadedly connected with a nut 9; a jackscrew 11 is sleeved outside the guide column 8, the jackscrew 11 is threadedly connected with the inner ring flange 12, one end of the jackscrew 11 abuts against the shell connecting part 2, the outer side of the jackscrew 11 is slidably connected with a sleeve pipe 10, and the sleeve pipe 10 is located between the nut 9 and the shell connecting part 2; the insertion surface of the inner ring flange 12 is fixedly connected with an O-shaped ring 13, and the O-shaped ring 13 abuts against the contact surface of the shell connecting part 2.

[0031] As Figure 4 and 5 shown in the embodiment of the utility model, the bottom of the shell connecting part 2 is threadedly connected with an oil return baffle 5, the side of the oil return baffle 5 is in the shape of a Chinese character "zheng", the top surface thereof is in the shape of an arc downward, and the two sides thereof are connected to the shell connecting part 2, and through the arrangement of the oil return baffle 5, the rapid leakage of lubricating oil is avoided.

[0032] As Figure 4 and 5 shown in the embodiment of the utility model, the backflow lubricating oil flows through the gap at the front end of the connecting part.

[0033] As Figures 4-7 shown in the embodiment of the utility model, the oil baffle 4 includes a short vertical plate 401, a long vertical plate 402 and a bottom plate 403, the bottom plate 403 is fixed to the inner surface of the shell connecting part 2 by means of bolts, the short vertical plate 401 and the long vertical plate 402 are fixed to the upper surface of the bottom plate 403, and the upper surfaces thereof are in the shape of an arc, the upper surface of the long vertical plate 402 is attached to the inner surface of the shell connecting part 2, and there is a gap between the upper surface of the short vertical plate 401 and the inner surface of the shell connecting part 2, and through the arrangement of the oil baffle 4, the leakage of lubricating oil is avoided, and at the same time, the short vertical plate 401 is arranged for the discharge of flue gas.

[0034] As Figures 4-7 shown in the embodiment of the utility model, the side, away from the shell connecting part 2, of the guide column 8 is provided with a hexagonal rotating port 15, and through the arrangement of the above structure, the rotation of the guide column 8 is facilitated.

[0035] As Figure 8As shown, during the operation of this utility model, the outer layer of the sleeve 10 is hexagonal, and the outer side of the set screw 11 is provided with multiple transmission grooves 14. The sleeve 10 is slidably connected to the transmission grooves 14. The sleeve 10 facilitates the rotation of the set screw 11 and facilitates the separation of the inner ring flange 12 and the cover connecting component 2.

[0036] like Figure 4 As shown, during the operation of this utility model, the bottom of the cover connecting component 2 is provided with an oil collection port 6, which is located below the oil return baffle 5 and has a bevel facing the oil return port 7. The oil collection port 6 facilitates the uniform return of lubricating oil.

[0037] In the operation of this utility model, the inner ring flange 12 is inserted into the cover connecting component 2, the guide post 8 passes through the inner ring flange 12, the threaded connection screw hole 3 is connected, the set screw 11 is screwed into the inner ring flange 12, the sleeve 10 is inserted, the nut 9 is screwed in, the nut 9 pushes the sleeve 10, and the sleeve 10 further pushes the inner ring flange 12 to move, thereby fixing the inner ring flange 12; when disassembly is required, the nut 9 is removed, and the sleeve 10 is rotated to move the inner ring flange 12 away from the cover connecting component 2, thus completing the disassembly.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A leak-proof cover for a steam turbine bearing, comprising a cover connecting component, wherein the top of the cover connecting component has an exhaust port and the bottom of the cover connecting component has an oil return port, characterized in that: The side of the cover connecting component is provided with multiple screw holes; An oil baffle is detachably connected to the inner surface of the cover connecting component, and the oil baffle is located below the exhaust port; An inner ring flange is inserted into one side of the cover connecting component. A through hole corresponding to the screw hole is opened on the side of the inner ring flange. A guide post is threaded into the screw hole. The guide post passes through the inner ring flange, and a nut is threaded into the side of the guide post away from the screw hole. A set screw is sleeved on the outside of the guide post. The set screw is threaded to the inner ring flange. One end of the set screw abuts against the cover connecting component. A sleeve is slidably connected to the outside of the set screw. The sleeve is located between the nut and the cover connecting component. An O-ring is fixed to the inner flange insertion surface, and the O-ring abuts against the contact surface of the cover connecting component.

2. A turbine bearing anti-leakage cover according to claim 1, characterized in that: a return oil baffle is threadedly connected to the bottom of the cover connecting component, the side of the return oil baffle is shaped like a "Z", its top surface is a downward arc, and its two sides are connected to the cover connecting component.

3. A turbine bearing anti-leakage cover according to claim 1, characterized in that: the oil baffle plate includes a short vertical plate, a long vertical plate and a bottom plate, the bottom plate is fixed to the inner surface of the cover connecting component by bolts, the short vertical plate and the long vertical plate are fixed to the upper surface of the bottom plate and their upper surfaces are arc-shaped, the upper surface of the long vertical plate is attached to the inner surface of the cover connecting component, and there is a gap between the upper surface of the short vertical plate and the inner surface of the cover connecting component.

4. A turbine bearing anti-leakage cover according to claim 1, characterized in that: a hexagonal rotating opening is provided on the side of the guide post away from the cover connecting component.

5. A turbine bearing anti-leakage cover according to claim 1, characterized in that: the outer layer of the sleeve is hexagonal, the outer side of the set screw is provided with multiple transmission grooves, and the sleeve is slidably connected to the transmission grooves.

6. A turbine bearing anti-leakage cover according to claim 1, characterized in that: the bottom of the cover connecting component is provided with an oil collection port, the oil collection port is located below the oil return baffle, and is a bevel facing the oil return port.

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