Outer circulation cooling device for thrust bearing of water-turbine generator set

Abstract

The utility model discloses a water-turbine generator set thrust bearing external circulation cooling device which comprises an oil storage disc arranged at the bottom of a bearing seat and used for storing lubricating oil, and further comprises an extraction unit which comprises an extraction assembly arranged on one side of the oil storage disc and used for extracting the lubricating oil in the oil storage disc, the flow direction selection assembly is arranged at the input end of the extraction assembly and used for controlling the oil inlet channel; one end of the cooling unit communicates with the output end of the extraction assembly, the other end of the cooling unit communicates with the interior of the oil storage disc, and the cooling unit is used for cooling the lubricating oil extracted by the extraction assembly and feeding the lubricating oil into the oil storage disc. By adjusting the flow direction selection assembly, the pumping assembly pumps the lubricating oil in the oil storage disc by switching the other oil pump, and burnout caused by too high temperature when a single oil pump pumps the lubricating oil for a long time is avoided.

Description

Technical Field

[0001] This utility model relates to the field of hydro-generator technology, specifically to an external circulation cooling device for the thrust bearing of a hydro-generator. Background Technology

[0002] The thrust bearing is one of the most critical components of a hydro generator. During operation, the thrust bearing may experience excessively high bearing temperature, which can affect the normal operation of the generator. A common method for cooling the thrust bearing is to use an oil pump to extract the high-temperature lubricating oil from the thrust bearing housing and send it to a cooler for cooling during generator operation. The cooled lubricating oil is then circulated back into the bearing housing to achieve the cooling of the thrust bearing.

[0003] However, existing technologies typically use only one set of oil pumps to extract lubricating oil from the bearing housing. Since the lubricating oil extraction process is a long-term process, using one set of oil pumps for extended periods can lead to overheating, especially in hot summers. If the oil pumps are not cooled in time, they can easily burn out, preventing the lubricating oil in the thrust bearing from continuously cooling and circulating. Therefore, it is necessary to improve this defect.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Utility Model Content

[0005] The purpose of this utility model is to provide an external circulation cooling device for the thrust bearing of a hydro-generator set, in order to solve the problem mentioned in the background art that the external circulation cooling of the thrust bearing in the prior art uses a set of oil pumps to extract lubricating oil for a long time, which causes the oil pumps to overheat and burn out, affecting the continuous cooling circulation of the thrust bearing lubricating oil.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The external circulation cooling device for the thrust bearing of a hydro-generator unit includes an oil storage pan located at the bottom of the bearing housing for storing lubricating oil, and further includes:

[0008] The extraction unit includes an extraction component located on one side of the oil storage pan for extracting lubricating oil from the oil storage pan, and a flow direction selection component located at the input end of the extraction component for controlling the oil inlet channel.

[0009] The cooling unit is connected at one end to the output end of the extraction component and at the other end to the inside of the oil storage pan. It is used to cool the lubricating oil extracted by the extraction component and send it into the oil storage pan.

[0010] Furthermore, the flow direction selection component includes:

[0011] The output pipe is connected to one side of the oil storage pan and communicates with the inside of the oil storage pan;

[0012] The first branch pipe is connected to the end of the output pipe opposite to the oil storage pan;

[0013] The guide frame is connected to one side of the first distribution pipe through two pipes, and is used to distribute the lubricating oil in the first distribution pipe.

[0014] Furthermore, the extraction component includes:

[0015] The first conduit and the second conduit are respectively connected to one side of the guide frame opposite to the first shunt tube;

[0016] The first oil pump is located in the middle of the first conduit and communicates with the inside of the first conduit, and is used to extract lubricating oil from the inside of the first conduit.

[0017] The second oil pump is located in the middle of the second conduit and communicates with the inside of the second conduit. It is used to extract lubricating oil from the inside of the second conduit.

[0018] The oil outlet pipe is connected to the oil outlet end of the first conduit and the second conduit, and is used to transport the lubricating oil discharged from the first conduit or the second conduit into the cooling unit.

[0019] Furthermore, the guide frame has a guide groove inside, and the upper end of the guide frame has a guide opening that communicates with the guide groove;

[0020] A stop block for sealing the first or second conduit is slidably inserted inside the guide frame;

[0021] A lever is fixedly connected to the upper end of the stop block and inside the guide opening, which is used to adjust the position of the stop block.

[0022] Furthermore, the cooling unit includes:

[0023] The second branch pipe is connected to the oil outlet end of the oil outlet pipe;

[0024] The cooling pipes are provided in multiple sets and are fixedly connected at equal intervals to one side of the second distribution pipe for distributing the lubricating oil in the second distribution pipe;

[0025] A converging pipe is fixedly connected to the side of the cooling pipe opposite to the second branch pipe, and is used to collect the lubricating oil that has been cooled in the cooling pipe.

[0026] The return pipe is connected at one end to the end of the converging pipe opposite to the cooling pipe, and at the other end to the oil reservoir. It is used to return the cooled lubricating oil in the return pipe to the oil reservoir.

[0027] Furthermore, the cooling unit also includes;

[0028] Multiple sets of spiral tubes are provided, each corresponding to a cooling tube, and are spirally wound around the outside of the corresponding cooling tube for heat exchange.

[0029] The cooling water inlet pipe is connected to the inlet end of the spiral tube and is used to supply water to the spiral tube.

[0030] The cooling water outlet pipe is connected to the outlet end of the spiral tube and is used to discharge the water after heat exchange inside the spiral tube.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] 1. This utility model uses an extraction unit to continuously extract the lubricating oil with high bearing temperature from the oil storage pan to a cooling unit for cooling. The cooled lubricating oil then re-enters the oil storage pan, thus achieving the circulation and cooling of the lubricating oil. When the oil pump in the extraction component becomes too hot due to prolonged operation, the flow direction selection component is adjusted so that the extraction component switches to another set of oil pumps to extract the lubricating oil from the oil storage pan, thus avoiding the risk of a single oil pump burning out due to overheating caused by prolonged extraction of lubricating oil. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0034] Figure 2 This is a schematic diagram of the baffle opening the first conduit according to the present invention;

[0035] Figure 3 This is a schematic diagram of the stop block opening the second conduit according to this utility model;

[0036] Figure 4 This is a schematic diagram of the cooling unit structure of this utility model.

[0037] Reference numerals: 100, bearing housing; 101, oil tray; 1, extraction unit; 11, flow direction selection component; 111, guide frame; 1111, guide groove; 1112, guide port; 112, first branch pipe; 113, output pipe; 114, stop block; 115, lever; 12, extraction component; 121, first conduit; 122, first oil pump; 123, second conduit; 124, second oil pump; 125, oil outlet pipe; 2, cooling unit; 21, second branch pipe; 22, cooling pipe; 23, converging pipe; 24, cooling water inlet pipe; 25, spiral pipe; 26, cooling water outlet pipe; 27, return pipe. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see Figure 1-4 This utility model provides a technical solution:

[0040] The external circulation cooling device for the thrust bearing of a hydro-generator set includes an oil storage pan 101 located at the bottom of the bearing housing 100 for storing lubricating oil, and further includes:

[0041] The extraction unit 1 includes an extraction component 12 disposed on one side of the oil storage pan 101 for extracting lubricating oil from the oil storage pan 101, and an extraction component 11 disposed at the input end of the extraction component 12 for controlling the flow direction selection of the oil inlet channel.

[0042] The cooling unit 2 is connected at one end to the output end of the extraction component 12 and at the other end to the inside of the oil storage pan 101. It is used to cool the lubricating oil extracted by the extraction component 12 and send it into the oil storage pan 101.

[0043] It should be noted that during operation, the extraction unit 1 continuously extracts the lubricating oil with high temperature from the oil storage pan 101 to the cooling unit 2 for cooling. The cooled lubricating oil then re-enters the oil storage pan 101, thereby achieving the circulation and cooling of the lubricating oil. When the oil pump in the extraction component 12 becomes too hot due to prolonged operation, the flow direction selection component 11 is adjusted so that the extraction component 12 switches to another set of oil pumps to extract the lubricating oil from the oil storage pan 101, thus avoiding the risk of a single oil pump burning out due to excessive temperature caused by prolonged extraction of lubricating oil.

[0044] As an improvement, such as Figure 1-3 As shown, the flow direction selection component 11 includes:

[0045] The output pipe 113 is connected to one side of the oil storage tray 101 and communicates with the inside of the oil storage tray 101.

[0046] The first branch pipe 112 is connected to one end of the output pipe 113 opposite to the oil storage pan 101;

[0047] The guide frame 111 is connected to one side of the first diversion pipe 112 through two pipes, and is used to divert the lubricating oil in the first diversion pipe 112.

[0048] Furthermore, the extraction component 12 includes:

[0049] The first conduit 121 and the second conduit 123 are respectively connected to one side of the guide frame 111 opposite to the first shunt tube 112;

[0050] The first oil pump 122 is located in the middle of the first conduit 121 and communicates with the inside of the first conduit 121, and is used to extract lubricating oil from the inside of the first conduit 121.

[0051] The second oil pump 124 is located in the middle of the second conduit 123 and communicates with the inside of the second conduit 123, and is used to extract lubricating oil from the inside of the second conduit 123.

[0052] The oil outlet pipe 125 is connected to the oil outlet end of the first conduit 121 and the second conduit 123, and is used to transport the lubricating oil discharged from the first conduit 121 or the second conduit 123 into the cooling unit 2.

[0053] Furthermore, the guide frame 111 has a guide groove 1111 inside, and the upper end of the guide frame 111 has a guide opening 1112 that communicates with the guide groove 1111.

[0054] A stop 114 for closing the first conduit 121 or the second conduit 123 is slidably inserted into the guide frame 111;

[0055] A lever 115 is fixedly connected to the upper end of the stop 114 and inside the guide 1112 for adjusting the position of the stop 114.

[0056] Among them, such as Figure 1 , Figure 4 As shown, the cooling unit 2 includes:

[0057] The second branch pipe 21 is connected to the oil outlet end of the oil outlet pipe 125;

[0058] The cooling pipe 22 is provided in multiple sets and is fixedly connected to one side of the second distribution pipe 21 at equal intervals, for distributing the lubricating oil in the second distribution pipe 21.

[0059] The converging pipe 23 is fixedly connected to one side of the cooling pipe 22 opposite to the second branch pipe 21, and is used to converge the lubricating oil cooled in the cooling pipe 22.

[0060] The return pipe 27 is connected at one end to the end of the converging pipe 23 opposite to the cooling pipe 22, and at the other end to the oil storage pan 101. It is used to return the cooled lubricating oil in the return pipe 27 to the oil storage pan 101.

[0061] In addition, such as Figure 4 As shown, the cooling unit 2 also includes;

[0062] The spiral tube 25 is provided in multiple sets corresponding to the cooling tube 22, and is spirally wound around the outside of the corresponding cooling tube 22 for heat exchange of the cooling tube 22.

[0063] Cooling water inlet pipe 24 is connected to the inlet end of spiral pipe 25 and is used to supply water to spiral pipe 25;

[0064] Cooling water outlet pipe 26 is connected to the outlet end of spiral tube 25 and is used to discharge the water after heat exchange inside spiral tube 25.

[0065] It should be noted that: in the specific implementation process of this utility model, if... Figure 1-2 As shown, initially, the baffle 114 closes the second conduit 123 and starts the first oil pump 122. The first oil pump 122 sends the lubricating oil with a high temperature in the oil storage pan 101 into the second conduit 21 through the output pipe 113, the first branch pipe 112, the first conduit 121, and the oil outlet pipe 125. Subsequently, the lubricating oil is cooled by multiple cooling pipes 22 in the second conduit 21 and then enters the converging pipe 23. The converging pipe 23 delivers the lubricating oil to the oil storage pan 101 through the return pipe 27.

[0066] like Figure 1 , Figure 3-4 As shown, in order to increase the cooling speed of the lubricating oil in the cooling pipe 22, the present invention divides the cooling pipe 22 into multiple strands and wraps a spiral pipe 25 around the outside of the cooling pipe 22. By continuously flowing cold water through the cooling water inlet pipe 24, the spiral pipe 25 and the cooling water outlet pipe 26, the heat of the lubricating oil in the cooling pipe 22 is ensured to be quickly carried away, thereby further improving the cooling effect of the lubricating oil.

[0067] like Figure 1 As shown, when the first oil pump 122 operates for a long time, especially in the hot summer, causing the temperature of the first oil pump 122 to become too high, the lever 115 is pulled along the guide port 1112. The lever 115 drives the stop block 114 to move along the guide groove 1111, so that the stop block 114, which originally closed the second conduit 123, switches to closing the first conduit 121. At this time, the second conduit 123 is opened, and the second oil pump 124 is started. The second oil pump 124 sends the lubricating oil in the oil pan 101 through the output pipe 113, the first diversion pipe 112, the second conduit 123, and the oil outlet pipe 125 into the second diversion pipe 21 for subsequent cooling, so as to prevent the first oil pump 122 from burning out due to prolonged operation at high temperature.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0069] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An external circulation cooling device for the thrust bearing of a hydro-generator set, comprising an oil storage tray (101) located at the bottom of the bearing housing (100) for storing lubricating oil, characterized in that, Also includes: The extraction unit (1) includes an extraction component (12) disposed on one side of the oil storage pan (101) for extracting lubricating oil from the oil storage pan (101), and an extraction component (11) disposed at the input end of the extraction component (12) for controlling the flow direction selection of the oil inlet channel. The cooling unit (2) is connected at one end to the output end of the extraction component (12) and at the other end to the inside of the oil storage pan (101). It is used to cool the lubricating oil extracted by the extraction component (12) and send it into the oil storage pan (101).

2. The external circulation cooling device for the thrust bearing of a hydro-generator set according to claim 1, characterized in that: The flow direction selection component (11) includes: The output pipe (113) is connected to one side of the oil storage pan (101) and communicates with the inside of the oil storage pan (101); The first branch pipe (112) is connected to one end of the output pipe (113) opposite to the oil storage pan (101); The guide frame (111) is connected to one side of the first diversion pipe (112) through two pipes, and is used to divert the lubricating oil in the first diversion pipe (112).

3. The external circulation cooling device for the thrust bearing of a hydro-generator unit according to claim 2, characterized in that: The extraction component (12) includes: The first conduit (121) and the second conduit (123) are respectively connected to one side of the guide frame (111) opposite to the first shunt tube (112); The first oil pump (122) is located in the middle of the first conduit (121) and communicates with the inside of the first conduit (121), and is used to extract the lubricating oil inside the first conduit (121); The second oil pump (124) is located in the middle of the second conduit (123) and communicates with the inside of the second conduit (123), and is used to extract the lubricating oil inside the second conduit (123); An oil outlet pipe (125) is connected to the oil outlet end of the first conduit (121) and the second conduit (123) to deliver the lubricating oil discharged from the first conduit (121) or the second conduit (123) into the cooling unit (2).

4. The external circulation cooling device for the thrust bearing of a hydro-generator unit according to claim 3, characterized in that: The guide frame (111) has a guide groove (1111) inside, and the upper end of the guide frame (111) has a guide opening (1112) communicating with the guide groove (1111); A stop (114) for closing the first conduit (121) or the second conduit (123) is slidably inserted into the guide frame (111); A lever (115) is fixedly connected to the upper end of the stop block (114) and inside the guide (1112) for adjusting the position of the stop block (114).

5. The external circulation cooling device for the thrust bearing of a hydro-generator unit according to claim 3, characterized in that: The cooling unit (2) includes: The second branch pipe (21) is connected to the oil outlet end of the oil outlet pipe (125); The cooling pipe (22) is provided in multiple sets and is fixedly connected to one side of the second distribution pipe (21) at equal intervals, for distributing the lubricating oil in the second distribution pipe (21); A converging pipe (23) is fixedly connected to one side of the cooling pipe (22) opposite to the second branch pipe (21) and is used to converge the lubricating oil cooled in the cooling pipe (22). The return pipe (27) is connected at one end to the end of the converging pipe (23) relative to the cooling pipe (22) and at the other end to the oil storage pan (101), and is used to return the cooled lubricating oil in the return pipe (27) to the oil storage pan (101).

6. The external circulation cooling device for the thrust bearing of a hydro-generator unit according to claim 5, characterized in that: The cooling unit (2) also includes; The spiral tube (25) is provided in multiple sets corresponding to the cooling tube (22), and is spirally wound around the outside of the corresponding cooling tube (22) for heat exchange of the cooling tube (22); Cooling water inlet pipe (24) is connected to the inlet end of spiral pipe (25) and is used to supply water to spiral pipe (25); The cooling water outlet pipe (26) is connected to the outlet end of the spiral tube (25) and is used to discharge the water after heat exchange in the spiral tube (25).

Images