Lubricating oil cooler of steam turbine

Abstract

The utility model relates to the technical field of lubricating oil coolers, in particular to a steam turbine lubricating oil cooler which comprises a cooling mechanism and sealing covers, the sealing covers are installed at the two ends of the cooling mechanism, the cooling mechanism comprises a cooling barrel, a main conveying pipe and an auxiliary conveying pipe, and the main conveying pipe and the auxiliary conveying pipe are installed in the cooling barrel. The main conveying pipe and the auxiliary conveying pipe are installed side by side, two sets of adjusting mechanisms are installed at the top end of the cooling barrel, each adjusting mechanism comprises a connecting box and an adjusting assembly, the adjusting assemblies are installed in the two sets of connecting boxes, and connecting pipes are installed at the top ends of the two sets of connecting boxes, so that the cooling efficiency is further improved; the working of the main conveying pipe and the auxiliary conveying pipe can be further stabilized through the arranged limiting plate, water can be continuously supplied through the water outlet and the water inlet formed in the sealing cover to improve the cooling stability, adjustment can be conducted through the arranged adjusting assembly, then the flow direction of lubricating oil is flexibly adjusted, and the production cost is further reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of lubricating oil coolers, specifically a steam turbine lubricating oil cooler. Background Technology

[0002] In modern industry, steam turbines, as crucial power equipment that converts steam thermal energy into mechanical energy, are widely used in power, petrochemical, metallurgical, and many other industries. During high-speed operation, steam turbines generate intense friction between their components, leading to accelerated wear and significant heat generation. To ensure normal operation, effective lubrication and cooling of critical components are essential, and lubricating oil coolers play an indispensable role in this process. Lubricating oil circulates within the turbine system, forming an oil film between components to effectively reduce the coefficient of friction, minimize wear, and remove heat generated by friction. However, with constantly changing turbine operating conditions, such as load fluctuations and changes in steam parameters, the lubricating oil absorbs a large amount of heat during circulation, causing its temperature to gradually rise. If the lubricating oil temperature is too high, its viscosity decreases, its lubrication performance declines, and it cannot form a stable oil film on the component surfaces, leading to accelerated wear and potentially equipment failure, severely impacting the safe and stable operation of the steam turbine.

[0003] For example, CN220815766U discloses a steam turbine lubricating oil cooler for thermal power plants, belonging to the technical field of thermal power plant equipment. It includes a cooler body with an oil inlet at its top, an oil outlet at the top of the cooler body away from the oil inlet, a water inlet at one end of the cooler body, and a water outlet at the other end of the cooler body located to the side of the water inlet. A connecting pipe is connected to one flange of the water inlet, and the other end of the connecting pipe is connected to a water pump output flange. A water exchange assembly is constructed on one side of the connecting pipe, and two supports are evenly fixed at the bottom of the cooler body. The inclusion of a water exchange assembly helps reduce energy consumption in thermal power plants and improves their economic efficiency.

[0004] However, the existing coolers cannot quickly cool down large amounts of lubricating oil. Furthermore, the power output of the turbine varies during operation, resulting in different amounts of lubricating oil output and thus different cooling efficiencies, which increases production costs. Therefore, it is urgent to design a turbine lubricating oil cooler to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a turbine lubricating oil cooler to solve the problems mentioned in the background art, such as the inability to quickly cool large amounts of lubricating oil, and the different power outputs of the turbine during operation, which in turn lead to different cooling efficiencies and increased production costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a turbine lubricating oil cooler, comprising a cooling mechanism and a sealing cover, wherein sealing covers are installed at both ends of the cooling mechanism, the cooling mechanism includes a cooling tank, a main conveying pipe and a secondary conveying pipe, the main conveying pipe and the secondary conveying pipe are installed inside the cooling tank, the main conveying pipe and the secondary conveying pipe are installed side by side, two sets of adjusting mechanisms are installed at the top of the cooling tank, the adjusting mechanism includes a connecting box and an adjusting component, the adjusting component is installed inside both sets of connecting boxes, and a connecting pipe is installed at the top of both sets of connecting boxes.

[0007] Preferably, both the main conveying pipe and the auxiliary conveying pipe are provided with limiting plates on their sides, and the sides of the two sets of limiting plates are fixed to the inner wall of the cooling tank.

[0008] Preferably, the two ends of the main conveying pipe and the auxiliary conveying pipe are respectively installed inside the two sets of connecting boxes, and both the main conveying pipe and the auxiliary conveying pipe are spiral-shaped.

[0009] Preferably, both sets of sealing caps are equipped with a water outlet and a water inlet, with the water outlet installed at the center of the front sealing cap of the cooling tank and the water inlet installed at the center of the rear sealing cap of the cooling tank.

[0010] Preferably, the interior of the single-unit connecting box is equipped with a lower partition and an upper partition. The bottom end of the connecting box is connected to the two ends of the main conveying pipe and the auxiliary conveying pipe. An adjustment component and a connecting pipe are installed in the center of the upper partition, and the bottom end of the adjustment component is threadedly connected to the center of the lower partition.

[0011] Preferably, a partition plate is installed at the center of the lower partition plate, and the partition plate separates the main conveying pipe and the auxiliary conveying pipe.

[0012] Preferably, the adjusting assembly includes a lead screw and a lead spool, with two sets of lead spools respectively installed at the front and rear ends of the connecting pipe. The center threads of the two sets of lead spools are threaded with lead screws, the bottom threads of the two sets of lead screws are threaded into the lower partition, and the top ends of the two sets of lead screws are fixed with rotating disks.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This turbine lubricating oil cooler expands the cooling range of flowing water by using two sets of parallel threaded main and auxiliary delivery pipes, further improving cooling efficiency. The main and auxiliary delivery pipes are further stabilized by a limiting plate, and the outlet and inlet with sealed covers provide continuous water supply, improving cooling stability.

[0015] This turbine lubricating oil cooler uses a separator plate to separate the main delivery pipe from the top of the auxiliary delivery pipe at the bottom of the connecting box. This design effectively separates the lubricating oil, allowing for adjustments to the flow rate when the usage is low. The flow direction of the lubricating oil can be flexibly adjusted by the provided regulating components, thereby further reducing production costs. Attached Figure Description

[0016] Figure 1 This is a side view of the present invention;

[0017] Figure 2 This is a side sectional view of the present invention;

[0018] Figure 3 This is a front view schematic diagram of the present utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the adjustment mechanism of this utility model.

[0020] In the diagram: 1. Cooling mechanism; 10. Cooling tank; 11. Main conveying pipe; 12. Secondary conveying pipe; 13. Limiting plate; 2. Sealing cover; 21. Outlet; 22. Inlet; 3. Adjusting mechanism; 31. Connecting box; 311. Lower partition; 312. Upper partition; 313. Partition plate; 32. Adjusting assembly; 321. Lead screw; 322. Lead screw drum; 323. Rotating disc; 33. Connecting pipe. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-4 One embodiment provided by this utility model:

[0023] A turbine lubricating oil cooler is disclosed in this application. The cooling tank 10 and sealing cover 2 used in this application are commercially available products. Their principles and connection methods are existing technologies well known to those skilled in the art. The cooler includes a cooling mechanism 1 and a sealing cover 2. Sealing covers 2 are installed at both ends of the cooling mechanism 1. The cooling mechanism 1 includes a cooling tank 10, a main delivery pipe 11, and a secondary delivery pipe 12. The main delivery pipe 11 and the secondary delivery pipe 12 are installed inside the cooling tank 10 and are installed side by side. Two sets of adjustment mechanisms 3 are installed at the top of the cooling tank 10. The adjustment mechanism 3 includes a connecting box 31 and an adjustment component 32. The adjustment component 32 is installed inside both sets of connecting boxes 31, and a connecting pipe 33 is installed at the top of both sets of connecting boxes 31.

[0024] As a further feature of this invention, both the main conveying pipe 11 and the auxiliary conveying pipe 12 are provided with limiting plates 13 on their sides. The sides of the two sets of limiting plates 13 are fixed to the inner wall of the cooling tank 10. The two ends of the main conveying pipe 11 and the auxiliary conveying pipe 12 are respectively installed inside the two sets of connecting boxes 31. Both the main conveying pipe 11 and the auxiliary conveying pipe 12 are spiral-shaped. This design is beneficial to expanding the range of water flow for cooling and further improving the cooling efficiency.

[0025] Furthermore, each of the sealing caps 2 is equipped with a water outlet 21 and a water inlet 22. The water outlet 21 is installed in the center of the front sealing cap 2 of the cooling tank 10, and the water inlet 22 is installed in the center of the rear sealing cap 2 of the cooling tank 10, which facilitates the flow of cold water and improves the cooling efficiency.

[0026] As a further improvement of this utility model, the single-unit connecting box 31 is internally equipped with a lower partition 311 and an upper partition 312. The bottom end of the connecting box 31 is connected to the two ends of the main conveying pipe 11 and the auxiliary conveying pipe 12. The center of the upper partition 312 is equipped with an adjusting component 32 and a connecting pipe 33. The center of the lower partition 311 is threadedly connected to the bottom end of the adjusting component 32. The center of the lower partition 311 is equipped with a partition plate 313, which separates the main conveying pipe 11 and the auxiliary conveying pipe 12. The adjusting component 32 includes a lead screw 321 and a lead cylinder 322. The two sets of lead cylinders 322 are respectively installed at the front and rear ends of the connecting pipe 33. The center of the two sets of lead cylinders 322 is threaded with a lead screw 321. The bottom end of the two sets of lead screws 321 is threaded into the lower partition 311. The top end of the two sets of lead screws 321 is fixed with a rotating disk 323. This design is beneficial for adjustment, thereby flexibly adjusting the flow direction of the lubricating oil and further reducing production costs.

[0027] Working principle: In use, the user first injects cold water into the cooling tank 10 through the inlet 22 at the rear end, and then discharges it from the outlet 21 through the main delivery pipe 11 and the auxiliary delivery pipe 12. When the lubricating oil is working, the hot lubricating oil is injected into the cooling tank 10 through the connecting pipe 32 at the top of the front connecting box 31. The lubricating oil can then flow into the bottom end of the lead screw 321 separated by the lower partition 311 and be cooled in the cooling tank 10 through the main delivery pipe 11 and the auxiliary delivery pipe 12. Then it flows out through the connecting pipe 33 installed in the rear connecting box 31. When the lubricating oil flow is low, only one set of rotating discs 323 needs to be rotated to drive the lead screw 321 to rotate and descend in the screw drum 322, blocking the lower partition 311 and limiting the delivery to only one set of delivery pipes. The above is the complete working principle of this utility model.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A turbine lubricating oil cooler, comprising a cooling mechanism (1) and a sealing cover (2), characterized in that: The cooling mechanism (1) is equipped with sealing caps (2) at both ends. The cooling mechanism (1) includes a cooling tank (10), a main conveying pipe (11) and a secondary conveying pipe (12). The main conveying pipe (11) and the secondary conveying pipe (12) are installed inside the cooling tank (10). The main conveying pipe (11) and the secondary conveying pipe (12) are installed side by side. Two sets of adjustment mechanisms (3) are installed at the top of the cooling tank (10). The adjustment mechanism (3) includes a connecting box (31) and an adjustment component (32). The adjustment component (32) is installed inside both sets of connecting boxes (31). The connecting pipe (33) is installed at the top of both sets of connecting boxes (31).

2. The turbine lubricating oil cooler according to claim 1, characterized in that: Both the main conveying pipe (11) and the auxiliary conveying pipe (12) are provided with limiting plates (13) on their sides, and the two sets of limiting plates (13) are fixed to the inner wall of the cooling barrel (10).

3. A turbine lubricating oil cooler according to claim 1, characterized in that: The two ends of the main conveying pipe (11) and the auxiliary conveying pipe (12) are respectively installed inside the two sets of connecting boxes (31), and both the main conveying pipe (11) and the auxiliary conveying pipe (12) are spiral-shaped.

4. A turbine lubricating oil cooler according to claim 1, characterized in that: Both sets of sealing caps (2) are equipped with a water outlet (21) and a water inlet (22). The water outlet (21) is installed at the center of the front sealing cap (2) of the cooling tank (10), and the water inlet (22) is installed at the center of the rear sealing cap (2) of the cooling tank (10).

5. A turbine lubricating oil cooler according to claim 1, characterized in that: The connecting box (31) of a single set is equipped with a lower partition (311) and an upper partition (312). The bottom end of the connecting box (31) is connected to the two ends of the main conveying pipe (11) and the auxiliary conveying pipe (12). The center of the upper partition (312) is equipped with an adjustment component (32) and a connecting pipe (33). The center of the lower partition (311) is threadedly connected to the bottom end of the adjustment component (32).

6. A turbine lubricating oil cooler according to claim 5, characterized in that: A partition plate (313) is installed at the center of the lower partition plate (311), and the partition plate (313) separates the main conveying pipe (11) and the auxiliary conveying pipe (12).

7. A turbine lubricating oil cooler according to claim 1, characterized in that: The adjusting assembly (32) includes a lead screw (321) and a lead screw drum (322). The two sets of lead screw drums (322) are respectively installed at the front and rear ends of the connecting pipe (33). The center thread of the two sets of lead screw drums (322) is inserted with the lead screw (321). The bottom thread of the two sets of lead screw drums (321) is inserted into the lower partition plate (311). The top end of the two sets of lead screw drums (321) is fixed with a rotating disk (323).

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