CN209892641U

CN209892641U - Water guide bearing cooler

Info

Publication number: CN209892641U
Application number: CN201920449324.1U
Authority: CN
Inventors: 曾宜峰; 张文强; 李新
Original assignee: Hanjiang River Invests And Develops Xi He Hydroelectric Power Station Of Co Ltd
Current assignee: Hanjiang River Invests And Develops Xi He Hydroelectric Power Station Of Co Ltd
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-01-03
Anticipated expiration: 2029-04-04

Abstract

The utility model provides a water guide bearing cooler, including the return bend of intaking, the case of intaking, go out the water tank, the cooler, two parallelly connected inlet tubes of being connected with the case of intaking, two parallelly connected outlet pipes of being connected with the play water tank, the cooler is imported and exported respectively with the inlet tube, go out water piping connection, the return bend of intaking is high-pressure rubber tube, the case of intaking includes water inlet I and two delivery ports I, water inlet I and the return bend of intaking are connected, delivery port I and water piping connection, it includes two water inlets II and a delivery port II to go out the water tank, water inlet II and play water piping connection, the cooler is two lamella structures, constitute by taking two sets of annular cooling tubes and the base of fin. The utility model discloses change the business turn over mode into two and advance two plays, reduce pipeline length, effectively improve cooler cooling performance, eliminated the easy hidden danger that blocks up of cooler, guaranteed unit safe and reliable's operation, the return bend of intaking changes high-pressure rubber tube, effectively reduces the water side resistance, reduces the pipe and decreases, guarantees that the inflow is sufficient, makes the drainage unblocked more.

Description

Water guide bearing cooler

Technical Field

The utility model belongs to the technical field of the bearing cooling device, concretely relates to water guide bearing cooler.

Background

In the prior art, a water guide bearing is of an oil immersion type self-circulation lubrication block tile structure, a ring pipe type water cooler is arranged at the bottom of a bearing oil tank, the cooler is of a two-segment structure and is formed by assembling two groups of copper pipes with fins and a base, the cooler is arranged at the bottom of an oil groove of the water guide bearing after being rounded, the base of the cooler is provided with an inlet and outlet welding interface and is connected with a cooling water inlet and outlet pipe, a cooling water inlet and outlet port is of an elbow welding structure, and the cooling water inlet and outlet port is of a single-inlet and single-outlet mode. When the unit is operated, cooling water of 0.2-0.5 MP flows through the cooler, water flows into two groups of copper pipes of the cooler through a welding interface at the bottom of an oil tank, and is discharged from the other end after circulating for one circle respectively to cool lubricating oil of the bearing, so that the water guide bearing can be ensured to operate safely within an allowable temperature.

The water guide bearing cooler is put into operation for 10 years, the oxidation inside the pipeline is gradually serious, the pipeline of the cooler is blocked occasionally, the temperature of the cooling water is increased, the temperature of the water guide bearing is increased, the highest bearing temperature is 53 ℃, and the temperature approaches to the alarm temperature of 55 ℃. Through disassembly inspection, oxidation phenomenon is found in the copper pipe, and the inner diameter of some bent pipes is thinned due to welding process, so that the overflow is reduced, and aquatic organisms (mainly shells) are easy to be retained and bred. Then, during operation, the water cooler is blocked and increasingly frequently even has a flow interruption. When the pipeline blocks up, the unit is forced to shut down, and the maintainer decomposes water conduction cooler business turn over water pipeline rapidly, thinks the square and tries to dredge the clearance, and is unblocked until the drainage, and the foreign matter of dredging out is mostly aquatic thing and silt, handles the back through the mediation, and the cooler can resume normal operating a period, but addresses the symptoms and does not cure the root cause, consumes a large amount of manpower and materials and time moreover, directly influences the safe economic benefits of unit.

Research finds that the cooling performance of the water-conduction cooler is reduced, and the root cause of the tile temperature is increased: firstly, the structure is unreasonable, the diameter of a copper pipe of a cooling element is small, bent pipes are more, the pipeline is long, and the welding process is unreasonable; secondly, the design is unreasonable, the two groups of ring pipes operate in a single way, and the flow of cooling water is increased; thirdly, the application time is long, the inside of the copper pipe is oxidized, the scaling is serious, and in addition, the fins are deformed during the maintenance. In conclusion, the cooling pipe adopts single-path operation, one inlet pipeline is long, the number of bent pipes is large, the flow of cooling water in the cooling pipe is increased, the cooling water temperature of the back course of the cooling pipe is higher and higher, the temperature difference between the cooling water and the oil temperature of the bearing is reduced, the heat acquired by the cooler is reduced, the heat exchange performance of the cooler is reduced, and the water guide bearing cooler is required to be transformed.

Disclosure of Invention

In order to solve the technical problem the utility model provides a water guide bearing cooler can effectively reduce the water side resistance, reduces the pipe and decreases, guarantees that the inflow is sufficient, makes the water intaking and draining unblocked more.

The technical scheme of the utility model is that: the utility model provides a water guide bearing cooler, includes the return bend of intaking, the case of intaking, goes out water tank, cooler, with two parallelly connected inlet tubes that the case is connected of intaking, two parallelly connected outlet pipes of being connected with the play water tank, the cooler is imported and exported respectively with inlet tube, play water piping connection, the return bend of intaking is high-pressure rubber tube, the case of intaking includes water inlet I and two delivery ports I, water inlet I and the return bend of intaking connect, delivery port I and advance water piping connection, it includes two water inlets II and a delivery port II to go out the water tank, water inlet II and play water piping connection, the cooler is two lamella structures, comprises two sets of annular cooling tubes and the base of taking the fin.

Further, each group of the cooling pipes is 8 in number.

Further, the diameter of the cooling pipe is 19 mm.

The utility model has the advantages that: the utility model discloses increase the water tank on original cooler basis, change the business turn over mode into two and advance two and go out, reduce pipeline length, reduced the rivers resistance, make the water inlet and outlet more unblocked, the flow increases, the velocity of flow accelerates, therefore the quality of the cooler water will increase in unit interval, the heat that the cooling water absorbs will also increase, effectively improved the cooling performance of cooler, eliminated the easy blocked hidden danger of cooler, guaranteed the safe and reliable operation of unit, make due contribution for the safe and economic operation of hydroelectric power plant unit; the water inlet bent pipe is changed into a high-pressure rubber pipe from an elbow welding structure, so that the water side resistance can be effectively reduced, the pipe loss is reduced, the water inflow is ensured to be full, and the water inlet and the water outlet are more smooth.

Drawings

FIG. 1 is a schematic view of a prior art chiller construction;

FIG. 2 is a schematic view of a water guide bearing cooler according to the present invention;

FIG. 3 is a schematic diagram of the cooling pipe of the present invention showing two inlets and two outlets;

wherein: 1. the water inlet system comprises a water inlet bent pipe 2, a water inlet tank 3, a water inlet pipe 4, a cooler 5, a water outlet pipe 6 and a water outlet tank.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which a person skilled in the art can, without any creative effort, fully implement the present invention.

The utility model discloses a concrete implementation mode is: as shown in fig. 1-3, a water guide bearing cooler comprises a water inlet elbow 1, a water inlet tank 2, a water outlet tank 6, a cooler 4, two parallel water inlet pipes 3 connected with the water inlet tank 2, and two parallel water outlet pipes 5 connected with the water outlet tank 6, wherein an inlet and an outlet of the cooler 4 are respectively connected with the water inlet pipes 3 and the water outlet pipes 5, the water inlet elbow 1 is a high-pressure rubber pipe which can effectively reduce water side resistance, reduce pipe loss and ensure sufficient water inflow so as to ensure smooth water inflow and drainage, the water inlet tank 2 comprises a water inlet I and two water outlets I, the water inlet I is connected with the water inlet elbow 1, the water outlet I is connected with the water inlet pipes 3, the water outlet tank 6 comprises two water inlets II and a water outlet II, the water inlet II is connected with the water outlet pipes 5, the cooler 4 is of a two-piece structure and consists of two groups of annular cooling pipes with fins and a base, the structure is two-in two-out, and the cooling water flow path shortens, has reduced the influence of water side resistance, and the velocity of flow also can accelerate, and the difference in temperature is stable to cooler heat exchange efficiency has been improved.

Furthermore, the number of each group of cooling pipes is 8, the number of the cooling pipes is increased, and the cooling efficiency is improved.

Furthermore, the diameter of the cooling pipe is 19mm, the pipe diameter is increased, so that water inlet and water discharge are more smooth, the flow is increased, the flow speed is accelerated, the mass of water flowing through the cooler in unit time is increased, and the heat absorbed by the cooling water is also increased.

Example (b): the water guide bearing cooler of the unit of the pleased river water power plant is completely modified and applied in 2017 in 1 month, and through 1 year of operation inspection, the water guide bearing cooler operates stably, the average water temperature is reduced by 3 ℃, the average tile temperature is reduced by 5 ℃, the cooling efficiency is improved by 10%, and in the operation period of one year, the water guide cooler does not have a blocking phenomenon and does not have unit halt caused by tile temperature rise. Practice proves that the water guide bearing cooler of the unit of the favorite river water power plant is modified and applied, so that the cooling performance of the cooler is effectively improved, the hidden danger that the cooler is easy to block is eliminated, the safe and reliable operation of the unit is ensured, and due contribution is made to the safe and economic operation of the unit of the favorite river water power plant.

While the preferred embodiments of the present invention have been described, it is to be understood that the invention is not limited to the precise embodiments described, and that equipment and structures not described in detail are understood to be practiced as commonly known in the art; any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention will still fall within the protection scope of the technical solution of the present invention by those skilled in the art without departing from the technical solution of the present invention.

Claims

1. The utility model provides a water guide bearing cooler, its characterized in that, including the return bend of intaking, the case of intaking, go out water tank, cooler, with two parallelly connected inlet tubes that the case is connected of intaking, two parallelly connected outlet pipes of being connected with the play water tank, the cooler is imported and exported respectively with inlet tube, play water piping connection, the return bend of intaking is high-pressure rubber tube, the case of intaking includes water inlet I and two delivery ports I, water inlet I and the return bend connection of intaking, delivery port I and advance water piping connection, it includes two water inlets II and a delivery port II to go out the water tank, water inlet II and play water piping connection, the cooler is two lamella structures, comprises two sets of annular cooling tubes and the base of taking the fin.

2. The water guide bearing cooler as defined in claim 1, wherein each group of said cooling tubes is 8 in number.

3. The water guide bearing cooler as set forth in claim 1, wherein said cooling tube has a diameter of 19 mm.