CN-116838722-B - Grease lubrication bearing cooling device

CN116838722BCN 116838722 BCN116838722 BCN 116838722BCN-116838722-B

Abstract

The invention relates to a grease lubrication bearing cooling device which comprises a nozzle arranged above a bearing seat, a regulating valve communicated with the nozzle, a water pump communicated with the regulating valve and a water tank, wherein the water pump is communicated with the water tank filled with cooling liquid. The invention has the beneficial effects that the opening degree of the regulating valve can be regulated through the arranged driving mechanism, so that the temperature of the bearing seat is ensured not to exceed the standard, and meanwhile, the opening degree of the regulating valve can be timely regulated according to the temperature of the bearing seat measured by the temperature sensor, so that energy can be saved.

Inventors

YANG JIEYUAN
TANG ERWEI
LI FAN
SI BOWEN
Zhou Erqi
FAN YONGDONG

Assignees

华能国际电力股份有限公司上安电厂

Dates

Publication Date: 20260508
Application Date: 20230628

Claims (4)

1. The grease lubrication bearing cooling device is characterized by comprising a nozzle (2) arranged above a bearing cover (1), a regulating valve (3) communicated with the nozzle (2), a water pump (4) communicated with the regulating valve (3) and a water tank (5), wherein the water pump (4) is communicated with the water tank (5) filled with cooling liquid; The device also comprises a temperature sensor (6) for monitoring the temperature of the bearing cover (1) and a controller, wherein the controller is respectively connected with the temperature sensor (6), the regulating valve (3) and the water pump (4) in a signal manner; the regulating valve (3) comprises a valve body (21), a valve core arranged in the valve body (21) and a driving mechanism for regulating the opening of the valve core; The valve core comprises a left half valve core (23), a right half valve core (22) and a rotating shaft (24), wherein one end of the rotating shaft (24) is rotationally connected with the lower part of the valve body (21), and the other end of the rotating shaft (24) is rotationally connected with the left half valve core (23); The right half valve core (22) is fixedly connected with the middle part of the rotating shaft (24); The left half valve core (23) is rotationally connected with the upper part of the valve body (21); The driving mechanism comprises a bracket (26) fixedly connected with the valve body (21), a push plate (28) slidably connected with the bracket (26), a power device for pushing the push plate (28) to slide and a valve opening adjusting structure arranged between the push plate (28) and the left half valve core (23) and the right half valve core (22).
2. The grease lubrication bearing cooling device according to claim 1, wherein the valve opening adjusting structure comprises a shaft sleeve (25) fixedly connected with the left half valve core (23), a right connecting arm (241) arranged on the rotating shaft (24), a left connecting arm (30) arranged on the shaft sleeve (25), a left slideway (31) and a right slideway (33) arranged on the push plate (28), a right rotary pin (32) arranged on the right connecting arm (241) and a left rotary pin (29) arranged on the left connecting arm (30); The left rotary pin (29) is in sliding connection with the left slideway (31); The right rotating pin (32) is in sliding connection with the right slideway (33); The middle part of the inner wall of the shaft sleeve (25) is rotationally connected with the rotating shaft (24); the outer wall of the shaft sleeve (25) is rotationally connected with the valve body (21).
3. The grease lubrication bearing cooling device according to claim 2 is characterized in that the power device is a cylinder (27), the cylinder body of the cylinder (27) is hinged with a bracket (26), a cylinder rod of the cylinder (27) is hinged with the push plate (28), and the controller is in signal connection with the cylinder (27).
4. A grease lubricated bearing cooling device according to claim 3, wherein the bracket (26) is provided with a rectangular groove (261), the push plate (28) is provided with a rectangular head (281), and the rectangular head (281) slides in the rectangular groove (261).

Description

Grease lubrication bearing cooling device Technical Field The invention relates to the technical field of cooling, in particular to a grease lubrication bearing cooling device. Background The bearings of the large thermal generator set rotating machine equipment are in grease lubrication mode, and the lubricating grease is filled into the bearing chamber to achieve the effect of cooling and lubricating the bearings in operation. The mode needs to fill lubricating grease into equipment regularly, and meanwhile, the running condition and grease degradation condition of the equipment need to be monitored in time in running, so that the maintenance quantity is increased, the bearing temperature is easily and rapidly increased due to rapid deterioration of oil quality, and the running safety of the equipment is affected. Each unit in the factory adopts a large number of transfer equipment in a grease lubrication mode, and the condition that the temperature of the bearing rises and exceeds an alarm value due to the fact that the cooling effect is reduced due to oil deterioration can occur every year; At present, the bearing is cooled by air cooling in China, and the patent technology (application number 202222697236.8, named as a bearing cooling device at the input end of a belt speed reducer) of China is adopted, so that the effect in winter is ideal, the room temperature is high in summer, the cooling effect is not ideal, and improvement is needed. Among the existing patents, the nearest existing technology is a patent with the application number of CN202020122264.5 and the name of a rough rolling bearing cooling device, and the patent comprises a bracket, a first connecting piece, a second connecting piece and a retainer ring. The second connecting component is internally provided with a second conveying cavity which is used for being communicated with the first conveying cavity, a plurality of spraying ports are formed along the inner walls of the first connecting component and the second connecting component, and the spraying ports are communicated with the first conveying cavity and the second conveying cavity. The check ring is fixed on the inner edges of the first connecting component and the second connecting component and is used for blocking the cooling medium on the inner sides of the first connecting component and the second connecting component; the cooling device comprises a roller, a first connecting component, a second connecting component, a spraying port, a cooling space and a cooling device, wherein the first connecting component and the second connecting component are buckled on the outer side of the roller, which is close to the bearing; Still another, apply for the patent of the number CN201822244877.1, the name is descending guide bearing heat sink and power generation system, it discloses including central body oil groove, conveying component and cooling tank, conveying component and central body oil groove intercommunication, conveying component part structure is located the cooling tank, and another part structure is located outside the cooling tank, and conveying component is used for carrying the cooling oil circulation between central body oil groove and cooling tank. This patent needs the solitary cooling tank that sets up, adopts oil to cool down, and the structure is complicated, does not also adjust the flow of cooling oil according to bearing temperature simultaneously, and is not energy-conserving, needs the improvement. Disclosure of Invention The invention aims to solve the technical problem of providing a grease lubrication bearing cooling device, which solves the problems of high bearing temperature and cooling requirement. In order to solve the problems, the invention adopts the following technical scheme: The grease lubrication bearing cooling device comprises a nozzle arranged above a bearing seat, a regulating valve communicated with the nozzle, a water pump communicated with the regulating valve and a water tank, wherein the water pump is communicated with the water tank filled with cooling liquid. The device further comprises a temperature sensor for monitoring the temperature of the bearing seat and a controller, wherein the controller is respectively connected with the temperature sensor, the regulating valve and the water pump in a signal way. Further, the regulating valve comprises a valve body, a valve core arranged in the valve body and a driving mechanism for regulating the opening degree of the valve core. Further, the valve core comprises a left half valve core, a right half valve core and a rotating shaft; One end of the rotating shaft is rotationally connected with the lower part of the valve body, and the other end of the rotating shaft is rotationally connected with the left half valve core; the right half valve core is fixedly connected with the middle part of the rotating shaft; the left half valve core is rotationally connected with the upper part of t