Leakage-proof visible coupling shield for turbine

Abstract

The utility model discloses a leakage-proof visible coupling shield for a turbine, which comprises a coupling shield body, and one end of the coupling shield body is coaxially connected with a corrugated pipe; the coupler shield body comprises an upper shield body and a lower shield body which are detachably connected, and a coupler containing space is formed after the upper shield body and the lower shield body are connected. An oil separation plate is fixedly arranged in the lower cover body, the two side walls of the oil separation plate are connected with the inner wall of the lower cover body, and a plurality of oil passing holes are formed in the oil separation plate; an oil return opening is formed in the bottom of the lower shield body, an oil return pipeline is connected to the oil return opening, a sight glass is arranged on the oil return pipeline, and baffles are arranged at the two ends of the upper surface of the oil separation plate in the axial direction of the coupler shield body. The lubricating oil leakage prevention device is simple in structure and convenient to operate, can meet the requirement for lubricating oil leakage prevention of large turbine equipment, and has practical significance and engineering practicability.

Description

Technical Field

[0001] The utility model belongs to the field of compressor units, relates to a coupling shield, and in particular to a leak-proof visible coupling shield for a turbine. Background Art

[0002] In the currently commonly used large turbine equipment, the drive unit and the process unit are connected to transmit torque through a coupling. In order to ensure the safety of daily maintenance personnel and prevent turbine machinery, a coupling shield is usually set on the outside of the coupling between the two equipment units. The existing coupling shield is divided into a fixed section and a shifting section. The fixed section is usually connected through a flange surface, and the shifting section is similar to the inner and outer sleeve design. The outer sleeve and the inner sleeve are matched to squeeze the O-ring to prevent lubricating oil leakage and release the thermal expansion of the shield. However, due to the high temperature, vibration, thermal expansion, and air flow inside the shield generated during the operation of the turbine equipment, the lubricating oil is stirred, resulting in a decrease in lubricating oil viscosity and increased permeability. The shield is deformed at high temperature, the O-ring softens due to high temperature, the fit becomes worse, and the sealing reliability is reduced. In addition, since the entire outer shell is closed, it is impossible to intuitively judge the amount of lubricating oil, and it is also impossible to effectively analyze the cause of lubricating oil leakage. Usually, the machine can only be shut down to apply sealant, but due to the inherent structure of the device, the sealing effect is usually not good, and the shutdown also causes waste of manpower and material resources. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a leak-proof visible coupling shield for a turbine, so as to solve the technical problems in the prior art that the coupling shields of large turbine units have poor sealing effect on lubricating oil and are inconvenient to inspect and maintain.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A leakproof visible coupling shield for a turbine, comprising a coupling shield body, one end of which is coaxially connected with a bellows;

[0006] The coupling shield body comprises an upper shield body and a lower shield body which are detachably connected, and the upper shield body and the lower shield body are connected to form a coupling accommodating space; an oil separator is fixedly arranged in the lower shield body, and the two side walls of the oil separator are connected to the inner wall of the lower shield body, and a plurality of oil holes are opened on the oil separator;

[0007] An oil return port is arranged at the bottom of the lower cover body, an oil return pipe is connected to the oil return port, and a sight glass is arranged on the oil return pipe.

[0008] The utility model also has the following technical features:

[0009] Specifically, baffles are arranged at both ends of the upper surface of the oil separator along the axial direction of the coupling shield body.

[0010] Furthermore, one end of the coupling shield body away from the bellows is coaxially connected to a fan-side metal heat insulating ring.

[0011] Furthermore, one end of the bellows away from the coupling shield body is coaxially connected to a gear side metal insulation ring.

[0012] Furthermore, a ventilation hole is provided on the top of the upper cover body, a ventilation tube is connected to the ventilation hole, and an air filter is provided on the ventilation tube.

[0013] Furthermore, the coupling shield body is connected to the bellows via a flange.

[0014] Furthermore, the lower cover body includes a fixed section and a conical oil outlet section which are connected to each other. The fixed section is connected to the upper cover body, and the oil return port is provided at the bottom end of the conical oil outlet section.

[0015] Furthermore, a plurality of second oil holes are evenly spaced on the baffle.

[0016] Furthermore, the oil separator is an arc-shaped plate.

[0017] Compared with the prior art, the utility model has the following technical effects:

[0018] The utility model can effectively prevent oil leakage from the coupling shield through structural design, especially through the coupling shield body and the bellows that are sealed and connected. The oil separator can effectively isolate the disturbance of the airflow in the coupling shield body to the bottom return oil, thereby preventing the airflow generated by the high-speed rotation of the coupling from driving the lubricating oil to stir in the shield and generate high temperature. The utility model has a simple structure and is easy to operate. It can meet the requirements of large turbine equipment to prevent lubricating oil from leaking, and has practical significance and engineering practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a partial structural schematic diagram of the utility model.

[0021] The meaning of each number in the figure is:

[0022] 1- coupling guard body, 2- bellows, 3- oil separator, 4- oil return pipe, 5- baffle, 6- sight glass, 7- metal insulation ring on fan side, 8- metal insulation ring on gear side, 9- air vent, 10- air filter, 11- flange; 31- first oil hole; 51- second oil hole, 101- upper cover body, 102- lower cover body; 1021- fixed section, 1022- conical oil outlet section.

[0023] The specific contents of the utility model are further described in detail below in conjunction with the drawings and embodiments. DETAILED DESCRIPTION

[0024] It should be noted that, unless otherwise specified, all components in the present invention are components known in the art.

[0025] The terms "upper", "lower", "front", "rear", etc. used in the present invention to indicate directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. "Inside" and "outside" refer to the inside and outside of the contour of the corresponding components, and the above terms cannot be understood as limitations on the present invention.

[0026] In the present invention, unless otherwise stated, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0028] Example

[0029] This embodiment provides a leak-proof visual coupling shield for turbines, such as Figure 1 to Figure 2 As shown, it comprises an axially penetrating coupling shield body 1, and one end of the coupling shield body 1 is coaxially connected with a bellows 2;

[0030] The coupling shield body 1 includes an upper shield 101 and a lower shield 102 which are detachably connected. The upper shield 101 is a semicircular arc plate. The upper shield 101 and the lower shield 102 are connected by bolts. After being connected, the upper shield 101 and the lower shield 102 form a closed coupling accommodating space for placing the coupling. An oil separator 3 is fixedly provided in the lower shield 102. The oil separator 3 in this embodiment is an arc plate. Both side walls of the arc oil separator 3 are connected to the inner wall of the lower shield 102. A plurality of first oil holes 31 are opened on the oil separator 3. The plurality of first oil holes 31 are arranged in an array.

[0031] An oil return port is provided at the bottom of the lower cover body 102, and the oil return port is connected to an oil return pipe 4. A peephole 6 is provided on the oil return pipe 4. The peephole 6 in this embodiment is made of organic glass. The oil leakage inside the coupling shield body 1 can be checked through the peephole 6, which provides assistance for the operation status or fault assessment of the equipment.

[0032] Preferably, the coupling shield body 1 is an aluminum body. Aluminum can effectively avoid the generation of sparks, is suitable for explosion-proof environments, has high strength and light weight, and is easy to maintain.

[0033] As a preferred solution of this embodiment, both ends of the upper surface of the oil separator 3 are provided with baffles 32 along the axial direction of the coupling shield body. The baffles 32 can hinder the gas flow in the coupling shield body 1 and form airflow disturbance, thereby reducing the agitation of the lubricating oil inside the coupling shield body 1, and preventing the lubricating oil from generating high temperature due to the agitation of the airflow when the coupling rotates at a high speed.

[0034] As a preferred solution of this embodiment, one end of the coupling shield body 1 away from the bellows 2 is coaxially connected to a fan-side metal insulation ring 7 .

[0035] As a preferred solution of this embodiment, one end of the bellows 2 away from the coupling shield body 1 is coaxially connected to a gear-side metal insulation ring 8 .

[0036] The metal heat insulation ring 7 on the fan side and the metal heat insulation ring 8 on the gear side can effectively reduce the heat conduction of the equipment, play the role of heat conduction resistance and sealing and anti-oil leakage.

[0037] As a preferred solution of this embodiment, a ventilation hole is opened on the top of the upper cover body 101, and a ventilation tube 9 is connected to the ventilation hole, and an air filter 10 is arranged on the ventilation tube 9.

[0038] As a preferred solution of this embodiment, the coupling shield body 1 is connected to the bellows 2 through a flange 101. Oil leakage can be completely prevented by using sealant at the connection. At the same time, the bellows 2 has strong axial elasticity and can effectively absorb the axial thermal expansion and deformation of the compensator during the operation of the equipment, thereby ensuring the sealing and disassembly convenience of the coupling shield body 1.

[0039] As a preferred solution of this embodiment, the lower cover body 102 includes a fixed section 1021 and a conical oil outlet section 1022 which are connected and arranged, wherein the configuration of the conical oil outlet section 1022 can greatly improve the oil return speed of the lubricating oil and reduce the residence time of the lubricating oil inside the shield. The fixed section 1021 is connected and arranged with the upper cover body 101, and an oil return port is provided at the bottom end of the conical oil outlet section 1022. After the upper cover body 101, the fixed section 1021 and the oil separator 3 are connected, a cylindrical structure is formed. When the lubricating oil enters the lower cover body 102, it can flow into the oil return pipe 4 through the first oil hole 31. At the same time, the oil separator 3 weakens the influence of the airflow generated by the coupling during the rotation process on the oil below the oil separator 3 in the lower cover body 102 to a certain extent, thereby preventing the lubricating oil from being stirred inside the coupling shield body 1, generating high temperature and oil smoke, and improving safety.

[0040] As a preferred solution of this embodiment, a plurality of second oil holes 51 are arranged at equal intervals on the baffle plate 5 .

[0041] When the utility model is in use, the coupling shield body 1 is arranged on the outside of the coupling. The lubricating oil splashed during the use of the equipment enters the coupling shield body 1, and is quickly collected at the oil outlet with the help of the designed conical oil outlet section 1022, and flows out through the oil return pipe 4 instead of splashing randomly; the bellows 2 has a strong axial elasticity, and effectively absorbs the axial thermal expansion and deformation of the compensator through axial expansion, thereby ensuring the sealing of the coupling shield body 1. When necessary, the oil leakage inside the coupling shield body 1 can be checked with the help of a peephole 6.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A leak-proof visible coupling shield for a turbine, comprising a coupling shield body (1), characterized in that: One end of the coupling shield body (1) is coaxially connected to a bellows (2); The coupling shield body (1) comprises an upper shield (101) and a lower shield (102) that are detachably connected, wherein the upper shield (101) and the lower shield (102) are connected to form a coupling accommodation space; an oil separator (3) is fixedly provided in the lower shield (102), and both side walls of the oil separator (3) are connected to the inner wall of the lower shield (102); and a plurality of first oil holes (31) are provided on the oil separator (3); An oil return port is provided at the bottom of the lower cover (102), an oil return pipe (4) is connected to the oil return port, and a sight glass (6) is provided on the oil return pipe (4).

2. The leak-proof visual coupling cover for turbine according to claim 1, characterized in that: Both ends of the upper surface of the oil separator (3) are provided with baffles (5) along the axial direction of the coupling shield body.

3. The leak-proof visual coupling cover for turbine according to claim 1, characterized in that: One end of the coupling shield body (1) away from the bellows (2) is coaxially connected to a fan-side metal heat insulating ring (7).

4. The leak-proof visual coupling cover for turbine according to claim 1, characterized in that: One end of the bellows (2) away from the coupling shield body (1) is coaxially connected to a gear side metal heat insulating ring (8).

5. The leak-proof visual coupling cover for turbine according to claim 1, characterized in that: An air vent is provided on the top of the upper cover (101), an air vent is connected to the air vent, and an air filter (10) is provided on the air vent.

6. The leak-proof visible coupling cover for turbine according to claim 1, characterized in that: The coupling shield body (1) is connected to the bellows (2) via a flange (11).

7. The leak-proof visual coupling cover for turbine according to claim 1, characterized in that: The lower cover body (102) comprises a fixed section (1021) and a conical oil outlet section (1022) which are connected to each other. The fixed section (1021) is connected to the upper cover body (101), and the bottom end of the conical oil outlet section (1022) is provided with the oil return port.

8. The leak-proof visible coupling cover for turbine according to claim 2, characterized in that: A plurality of second oil holes (51) are arranged at equal intervals on the baffle (5).

9. The leak-proof visible coupling cover for a turbine according to claim 1, wherein: The oil separator (3) is an arc-shaped plate.

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