System for eliminating oil leakage of fan bearing seat

Abstract

A system for eliminating oil leakage of a fan bearing seat is characterized in that the system comprises a fan air chamber, the fan bearing seat, an oil return pipeline, an oil inlet pipeline, a connecting pipe, a manual gate valve A, a manual gate valve B, a visible oil flow indicator and a negative pressure meter, the fan air chamber is arranged at one end of the fan bearing seat, and the oil return pipeline is arranged at the other end of the fan bearing seat; an oil inlet pipeline is arranged beside the oil return pipeline, a connecting pipe is arranged on the oil inlet pipeline, the tail end of the connecting pipe extends into the fan air chamber, and a manual gate valve A is arranged on the connecting pipe; the connecting pipe is arranged, normal flowing of fan bearing lubrication and cooling grease can be effectively guaranteed by means of the negative pressure environment of the fan, meanwhile, a suction force is achieved through the negative pressure of the connecting pipe, it is guaranteed that the fan bearing seat does not leak oil, the sealing strength does not need to be purely increased, the use amount of lubricating oil does not need to be reduced, and the labor cost is also saved. The device is more suitable for continuous production sections of large fans in thermal power plants and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of large-scale fans, in particular to a system for eliminating oil leakage from a fan bearing seat. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and deliver gas. It is a driven fluid machine. Fan is the customary abbreviation for gas compression and gas delivery machinery in China. The fans usually mentioned include ventilators, blowers, and wind turbines.

[0003] During the normal operation of large fans, the lubricating oil in the fan bearing seat often leaks, which affects the normal operation of the fan. It is necessary to manually check whether the lubricating oil is sufficient regularly. If the oil leakage is not found for a long time, it will cause serious damage to the fan and cause the equipment to be unable to operate. In addition, the users regularly add lubricating oil, which not only consumes labor but also pollutes the surrounding environment. The existing solution is generally to simply increase the sealing strength, but the effect of preventing oil leakage is not good in practice, especially when the fan increases its output, the oil leakage site will be exposed again. In order to solve the above problems, a system for eliminating oil leakage in the fan bearing seat is proposed. Utility Model Content

[0004] In view of the above existing technical problems, the utility model provides a system for eliminating oil leakage from a fan bearing seat, which is characterized by comprising a fan air chamber, a fan bearing seat, an oil return pipeline, an oil inlet pipeline, a connecting pipe, a manual gate valve A, a manual gate valve B, a visual oil flow indicator, and a negative pressure gauge. A fan air chamber is arranged at one end of the fan bearing seat, an oil return pipeline is arranged at the other end of the fan bearing seat, an oil inlet pipeline is arranged next to the oil return pipeline, a connecting pipe is arranged on the oil inlet pipeline, and the end of the connecting pipe extends into the fan air chamber, a manual gate valve A is arranged on the connecting pipe, a manual gate valve B is arranged below the manual gate valve A, a visual oil flow indicator is arranged between the manual gate valve B and the manual gate valve A, and a negative pressure gauge is arranged above the manual gate valve A;

[0005] Furthermore, the oil return pipeline and the oil inlet pipeline are isolated by the fan bearing seat, and the interior of the fan chamber is in a negative pressure state after the fan is started;

[0006] Furthermore, the lower portion of the connecting pipe is seal-welded to the oil return pipeline, the upper portion of the connecting pipe extends into the air chamber of the fan and is seal-welded, and the visual oil flow indicator is arranged on the connecting pipe via a flange.

[0007] Beneficial effects of the utility model:

[0008] The utility model discloses to utilize the negative pressure environment of the fan by setting the connecting pipe, can effectively ensure the lubrication of the fan bearing, the normal flow of cooling grease, and utilize its own negative pressure to achieve a suction force, thereby ensuring that the fan bearing seat does not leak oil, without simply increasing the sealing strength and reducing the amount of lubricating oil, thus saving labor costs, and is more suitable for continuous production sections such as large fans in thermal power plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the overall structure of a system for eliminating oil leakage from a fan bearing seat according to the utility model;

[0010] As shown in the figure: 1- fan air chamber, 2- fan bearing seat, 3- oil return pipeline, 4- oil inlet pipeline, 5- connecting pipe, 6- manual gate valve A, 7- manual gate valve B, 8- visual oil flow indicator, 9- negative pressure gauge. DETAILED DESCRIPTION

[0011] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0012] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0013] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0014] Example 1

[0015] The utility model provides a system for eliminating oil leakage of a fan bearing seat 2, which is characterized by comprising a fan air chamber 1, a fan bearing seat 2, an oil return pipeline 3, an oil inlet pipeline 4, a connecting pipe 5, a manual gate valve A6, a manual gate valve B7, a visual oil flow indicator 8, and a negative pressure gauge 9. The fan air chamber 1 is arranged at one end of the fan bearing seat 2, the oil return pipeline 3 is arranged at the other end of the fan bearing seat 2, the oil inlet pipeline 4 is arranged beside the oil return pipeline 3, the connecting pipe 5 is arranged on the oil inlet pipeline 4, the end of the connecting pipe 5 extends into the fan air chamber 1, the manual gate valve A6 is arranged on the connecting pipe 5, the manual gate valve B7 is arranged below the manual gate valve A6, the visual oil flow indicator 8 is arranged between the manual gate valve B7 and the manual gate valve A6, and the negative pressure gauge 9 is arranged above the manual gate valve A6;

[0016] Furthermore, the oil return pipeline 3 and the oil inlet pipeline 4 are isolated by the fan bearing seat 2, and after the fan is started, the inside of the fan chamber 1 is in a negative pressure state;

[0017] Furthermore, the lower portion of the connecting pipe 5 is seal-welded to the oil return pipeline 3 , the upper portion of the connecting pipe 5 extends into the fan air chamber 1 and is seal-welded, and a visual oil flow indicator 8 is disposed on the connecting pipe 5 via a flange.

[0018] Example 2

[0019] Before the fan starts running, the manual gate valve A6 and the manual gate valve B7 should be in the closed position. After the fan starts running normally, negative pressure has been formed in the fan air chamber 1. Manually and slowly open the manual gate valve B7 to full open. Observe that the oil flow direction of the visual oil flow indicator 8 should rotate counterclockwise, proving that the lubricating oil has been sucked into the pipeline from the return oil pipeline 3. Monitor the value through the negative pressure gauge 9. While observing the lubricating oil moving toward the air chamber, continuously adjust the opening of the manual gate valve A6 to control the negative pressure value to ensure that the suction force of the lubricating oil toward the fan air chamber 1 is within a certain range. The pulling force is within the effective value, and ensures that the lubricating oil will not be sucked out into the wind chamber. If it is found that the negative pressure has the risk of sucking out the lubricating oil, the manual gate valve A6 can be manually closed to ensure that the negative pressure suction in the pipeline is not sucked out by the negative pressure in the wind chamber. When the fan is shut down and the system needs to be shut down, the operation process is to shut down the fan, manually close the manual gate valve A6, observe that the visual oil flow indicator 8 stops rotating, and observe that the pressure on the negative pressure gauge 9 is zero, which proves that the manual gate valve A6 has been closed in place. At the same time, manually close the manual gate valve B7, and the return oil pipeline 3 and the oil inlet pipeline 4 do not need to be operated.

[0020] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A system for eliminating oil leakage from a fan bearing seat, characterized in that: It includes a fan chamber, a fan bearing seat, an oil return pipeline, an oil inlet pipeline, a connecting pipe, a manual gate valve A, a manual gate valve B, a visual oil flow indicator, and a negative pressure gauge. The fan chamber is arranged at one end of the fan bearing seat, the oil return pipeline is arranged at the other end of the fan bearing seat, an oil inlet pipeline is arranged next to the oil return pipeline, a connecting pipe is arranged on the oil inlet pipeline, the end of the connecting pipe extends into the fan chamber, a manual gate valve A is arranged on the connecting pipe, a manual gate valve B is arranged below the manual gate valve A, a visual oil flow indicator is arranged between the manual gate valve B and the manual gate valve A, and a negative pressure gauge is arranged above the manual gate valve A.

2. A system for eliminating oil leakage from a fan bearing seat according to claim 1, characterized in that: The oil return pipeline and the oil inlet pipeline are isolated by the fan bearing seat, and the interior of the fan chamber is in a negative pressure state after the fan is started.

3. A system for eliminating oil leakage from a fan bearing seat according to claim 2, characterized in that: The lower part of the connecting pipe is sealed and welded to the oil return pipeline, the upper part of the connecting pipe extends into the air chamber of the fan and is sealed and welded, and the visual oil flow indicator is arranged on the connecting pipe through a flange.

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