Oil temperature management system

Abstract

This utility model belongs to the field of gear oil temperature management technology and discloses an oil temperature management system. The system includes an oil-water heat exchanger and a water storage tank. The oil-water heat exchanger is equipped with heat exchange tubes and a water chamber. The heat exchange tubes are connected to the reducer, and the water chamber is connected to the water storage tank. Gear oil can flow through the heat exchange tubes and exchange heat with the water in the water chamber. A supply pipe and a return pipe are connected between the water storage tank and the oil-water heat exchanger. Both the supply pipe and the water storage tank are connected to a cold water supply pipe, allowing hot or cold water to be selectively supplied to the oil-water heat exchanger. This oil temperature management system enables heat exchange between cold or hot water and the gear oil, allowing the gear oil temperature to be controlled within a reasonable range of 20℃ to 50℃ under different ambient temperatures. This meets the basic requirements for good gear oil lubrication, thereby extending the service life of the reducer, reducing equipment maintenance frequency, and increasing the long-term operational stability of the reducer.

Description

Technical Field

[0001] This utility model relates to the field of gear oil temperature management technology, and in particular to an oil temperature management system. Background Technology

[0002] In glass production, the mixer (or material mixer) is the core equipment in the raw material preparation stage. Although the capacity of the mixer has increased with the continuous expansion of the melting furnace, the core component of the mixer is still a three-stage vertical reducer, only with increased size and power. Its structure and principle remain largely the same: the bottom of the reducer is the input shaft worm gear first-stage reduction mechanism, which is immersed in gear oil; the middle section is the planetary sun gear second-stage reduction mechanism; and the top is the output shaft planetary sun gear third-stage reduction mechanism. The lubrication method of the second and third stage reduction mechanisms is as follows: an oil pump pumps gear oil from the oil tank into the oil inlet reserved at the top of the reducer, allowing the gear oil to lubricate the planetary sun gear mechanism, planetary gears, and gear rings on the inner wall of the reducer by spraying. Two breather filter valves are designed and installed to maintain the pressure balance inside and outside the reducer chamber, facilitating the smooth entry and exit of gear oil into or out of the reducer chamber.

[0003] Due to the large temperature difference in the on-site environment throughout the year, the operating temperature of the gear oil in the reducer fluctuates between -5℃ and 79℃. When the gear oil temperature is too high, the viscosity index of the oil will drop sharply, which will also significantly reduce its adhesion to the gear friction surface, causing the formed oil film to break down. When the oil temperature is too low, the viscosity coefficient of the oil will increase, which will significantly reduce its fluidity. Both of these will cause the gear friction surface to wear more intensely due to lack of lubrication, and the lubrication effect will be greatly reduced.

[0004] Therefore, there is an urgent need for an oil temperature management system to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide an oil temperature management system that can keep the temperature of gear oil within a suitable range, thus avoiding poor lubrication due to changes in ambient temperature.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Oil temperature management system, including:

[0008] An oil-water heat exchanger has an oil inlet, an oil outlet, a water inlet, and a water outlet. The heat exchanger contains heat exchange tubes and a water chamber. The heat exchange tubes are connected to the oil inlet and the oil outlet, and the water chamber is connected to the water inlet and the water outlet. Gear oil can flow through the oil inlet and the oil outlet through the heat exchange tubes and exchange heat with the water in the water chamber.

[0009] A water storage tank is provided, with a water supply pipe connected between the water storage tank and the water inlet, and a return pipe connected between the water storage tank and the water outlet. The water storage tank can store hot or cold water, and both the water supply pipe and the water storage tank are connected to a cold water supply pipe. The hot or cold water can be selectively input into the oil-water heat exchanger through the water supply pipe.

[0010] Preferably, the oil-water heat exchanger includes a shell and a coil, the coil being disposed inside the shell, the water cavity being formed between the shell and the coil, the oil inlet, the oil outlet, the water inlet and the water outlet being disposed in the shell, the coil being configured as the heat exchange tube, and the coil being connected to the oil inlet and the oil outlet.

[0011] Preferably, the height of the oil inlet is lower than the height of the oil outlet, and the coil is arranged around the inner wall of the housing along an axial direction from low to high within the housing.

[0012] The height of the inlet is lower than the height of the outlet.

[0013] Preferably, a first valve is connected between the cold water supply pipe and the water supply pipe, and a second valve is connected between the water storage tank and the water supply pipe. Both the first valve and the second valve have on / off functions.

[0014] Preferably, the oil temperature management system further includes an oil pump, an oil tank, and a water pump. The oil pump is connected to the heat exchange tube, the reducer, and the oil tank. The oil pump can drive the gear oil to flow through the heat exchange tube, the reducer, and the oil tank. The water pump is connected to the return pipe, the water tank, the water supply pipe, and the water cavity, and can drive the water to flow through the return pipe, the water tank, the water supply pipe, and the water cavity.

[0015] Preferably, the oil storage tank is equipped with a filter.

[0016] Preferably, the return pipe is provided with a third valve, which is used to control the flow rate in the return pipe.

[0017] Preferably, a level gauge is installed in the water storage tank, and the level gauge is signal-connected to the water pump.

[0018] Preferably, a level gauge is installed in the water storage tank, and the level gauge is signal-connected to the third valve.

[0019] Preferably, a temperature sensor is provided at the oil outlet to detect the temperature of the gear oil.

[0020] The beneficial effects of this invention are as follows: This oil temperature management system enables rapid, direct, and efficient heat exchange between the gear oil and circulating cold or hot water. This allows the gear oil to be controlled within a reasonable range of 20℃ to 50℃ under different ambient temperatures, meeting the basic requirements for good gear oil lubrication. This extends the service life of the reducer, reduces the frequency of equipment maintenance, and increases the long-term operational stability of the reducer. Simultaneously, water can be stored and recycled through a water tank, avoiding water waste. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a cooling structure for gear oil in the prior art;

[0022] Figure 2 This is a schematic diagram of the oil temperature management system in one embodiment of the present invention;

[0023] Figure 3 This is a front view of the heat exchange tube structure in one embodiment of this utility model;

[0024] Figure 4 This is a top view of the heat exchange tube in one embodiment of the present invention;

[0025] Figure 5 This is a side view of the heat exchange tube structure in one embodiment of this utility model;

[0026] Figure 6 This is a front view of the external structure of an oil-water heat exchanger in one embodiment of this utility model;

[0027] Figure 7 This is a top view of the external structure of an oil-water heat exchanger in one embodiment of this utility model;

[0028] Figure 8 This is a side view of the external structure of an oil-water heat exchanger in one embodiment of this utility model.

[0029] In the picture:

[0030] 1. Gear reducer;

[0031] 2. Water storage tank; 21. Level gauge;

[0032] 3. Oil-water heat exchanger; 31. Heat exchange tube; 32. Shell; 301. Oil inlet; 302. Oil outlet; 303. Water inlet; 304. Water outlet;

[0033] 4. Oil reservoir; 41. Filter;

[0034] 51. Water supply pipe; 52. Return pipe; 53. Cold water supply pipe; 54. First valve; 55. Second valve; 56. Third valve;

[0035] 6. Water pump;

[0036] 7. Oil pump;

[0037] 8. Temperature sensor. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," and "abutting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] In the existing operation of reducer 1, the temperature of the gear oil plays a crucial role in the lubrication effect and the stability of reducer 1's operation. Because the gear oil temperature continuously rises due to the constant friction of the internal gears during continuous operation of reducer 1, the early German-imported TEKA QH4500 mixer only employed a cooling method. That is, the gear oil circulated internally within reducer 1, and a fan blade was installed on the input shaft of reducer 1 to provide air cooling for the entire reducer 1 casing, thereby achieving temperature control of the gear oil. For example... Figure 1 As shown, domestic mixer manufacturers connect a cooling fan in series in the gear oil circulation loop, utilizing air convection to cool the gear oil. However, in hot summer weather, even with the cooling effect of the oil tank 4 surface combined with the fan, it's insufficient to properly control the gear oil temperature. The overall temperature reduction is less than 8°C, leading to excessively high gear oil temperatures. In cold winter weather, the cooling fan is ineffective at warming the gear oil, failing to provide adequate lubrication for the reducer 1. This accelerates gear wear and shortens the reducer 1's lifespan.

[0043] Therefore, as Figures 2 to 8 As shown, this utility model provides an oil temperature management system to achieve temperature management of gear oil. For example... Figure 2 As shown, the oil temperature management system mainly includes an oil-water heat exchanger 3, a water tank 2, and an oil tank 4. The reducer 1 is connected to the oil tank 4 and the oil-water heat exchanger 3, allowing the gear oil to circulate among them. The oil-water heat exchanger 3 is connected to the water tank 2. By inputting water (hot or cold water) at a preset temperature, a high-temperature or low-temperature environment can be achieved in the oil-water heat exchanger 3, thereby heating or cooling the gear oil.

[0044] Specifically, the oil-water heat exchanger 3 has an oil inlet 301, an oil outlet 302, a water inlet 303, and a water outlet 304, and is equipped with heat exchange tubes 31 and a water chamber. One end of the heat exchange tube 31 is connected to the oil inlet 301, and the other end is connected to the oil outlet 302. The oil inlet 301 is connected to the oil storage tank 4, and the oil outlet 302 is connected to the reducer 1. After flowing out of the reducer 1, the gear oil first flows through the oil storage tank 4, and then flows into the oil-water heat exchanger 3. After undergoing heating or cooling treatment, it flows into the reducer 1. The water chamber is connected to the water inlet 303 and the water outlet 304. When the gear oil flows in the heat exchange tube 31, it can exchange heat with the water in the water chamber, thereby regulating the temperature of the gear oil.

[0045] The water storage tank 2 is used to store hot water and is connected to the inlet 303 by a water supply pipe 51, through which hot water can be fed into the oil-water heat exchanger 3. Simultaneously, a return pipe 52 is connected between the water storage tank 2 and the outlet 304, allowing water that has been in contact with the gear oil to flow back into the water storage tank 2, thus ensuring a continuous supply of hot water to the oil-water heat exchanger 3 to heat the gear oil. Optionally, the water storage tank 2 can heat the stored water, or utilize the heat from facilities such as a furnace to heat the stored water.

[0046] Meanwhile, both the water supply pipe 51 and the water storage tank 2 are connected to a cold water supply pipe 53. When the water level in the water storage tank 2 is low, water can be replenished through the cold water supply pipe 53. When it is necessary to cool the gear oil, cold water is supplied directly to the oil-water heat exchanger 3 through the water supply pipe 51, creating a low-temperature environment to cool the gear oil. It should be noted that when cooling the gear oil is needed, it is generally during seasons with higher ambient temperatures, so cold water can be stored in the water storage tank 2; while when heating the gear oil is needed, it is generally during seasons with lower ambient temperatures, so hot water can be stored in the water storage tank 2. In other words, storing hot water and storing cold water are done at different times, and there will be no mutual interference or mixing.

[0047] This oil temperature management system enables rapid, direct, and efficient heat exchange between the gear oil and circulating cold or hot water. This allows the gear oil to be maintained within a reasonable temperature range of 20℃ to 50℃ under varying ambient temperatures, meeting the basic requirements for proper lubrication. This extends the service life of the reducer 1, reduces the frequency of equipment maintenance, and increases the long-term operational stability of the reducer 1. Simultaneously, water can be stored and recycled through the water storage tank 2, preventing water waste.

[0048] like Figure 2 As shown, a first valve 54 connects the cold water supply pipe 53 and the water supply pipe 51, and a second valve 55 connects the water storage tank 2 and the water supply pipe 51. Both the first valve 54 and the second valve 55 have on / off functions. By controlling the first valve 54 and the second valve 55, hot or cold water can be selectively input into the oil-water heat exchanger 3, thereby meeting the gear oil temperature management requirements under different operating conditions. A temperature sensor 8 is installed at the oil outlet 302. This temperature sensor 8 can be magnetically installed, as long as it can detect the temperature of the gear oil flowing out of the heat exchange pipe 31.

[0049] Continue to refer to Figure 2As shown, the oil temperature management system also includes an oil pump 7 and a water pump 6. The oil pump 7 is connected to the heat exchange tube 31, the reducer 1, and the oil reservoir 4. The oil pump 7 drives gear oil to flow through the heat exchange tube 31, the reducer 1, and the oil reservoir 4. The water pump 6 is connected to the return pipe 52, the water reservoir 2, the water supply pipe 51, and the water chamber, and drives water to flow through the return pipe 52, the water reservoir 2, the water supply pipe 51, and the water chamber. Optionally, the oil reservoir 4 is also equipped with a filter 41 to filter and clean the gear oil, removing metal shavings and other foreign objects, ensuring the long-term stability of the reducer 1.

[0050] For example, in this embodiment, both the water supply pipe 51 and the return pipe 52 are made of DN25 steel pipes. The water pump 6 is installed at the outlet 304 to return the water after heat exchange to the water storage tank 2. The oil pump 7 is located between the oil storage tank 4 and the oil-water heat exchanger 3 to input the oil in the oil storage tank 4 into the oil-water heat exchanger 3. Optionally, the water storage tank 2 is located at a higher position (e.g., the second floor), while the oil-water heat exchanger 3 is located at a lower position (e.g., the first floor), thereby utilizing gravity to provide a certain water pressure.

[0051] Preferably, the return pipe 52 is equipped with a third valve 56, which is used to control the flow rate in the return pipe 52, thereby balancing the outflow and return flow of the water storage tank 2. Specifically, in this embodiment, a level gauge 21 is installed in the water storage tank 2. The level gauge 21 is a float-type level gauge 21 and is connected to the water pump 6. In use, the water storage tank 2 is initially reserved with only about 0.5T of water. When the entire system is running, the opening of the third valve 56 is manually adjusted to control the return water flow rate at about 0.9T / H. Since the average water consumption is about 0.9T / H, maintaining a balance between water consumption and return water flow can prevent the water level in the water storage tank 2 from rising rapidly due to excessive return water, causing the return water to overflow from the water storage tank 2 and wasting water resources. At the same time, it can also quickly refresh the water in the water storage tank 2 when the "cooling" mode is selected in summer, preventing the cold water temperature from accumulating and rising rapidly, thus ensuring the efficiency of cooling the gear oil.

[0052] Of course, in some embodiments, a similar effect can be achieved by connecting the level gauge 21 and the water pump 6 via a signal connection, as long as the water pump 6 that can adjust the flow rate is used. This will not be described in detail in this utility model.

[0053] like Figures 3 to 5As shown, in this embodiment, the oil-water heat exchanger 3 mainly includes a shell 32 and a coil. The coil is disposed inside the shell 32, and the water cavity is formed between the inner wall of the shell 32 and the coil. An oil inlet 301, an oil outlet 302, a water inlet 303, and a water outlet 304 are disposed on the shell 32. The water inlet 303 and the water outlet 304 are connected to the water cavity, and the oil inlet 301 and the oil outlet 302 are connected to the coil, which serves as the aforementioned heat exchange tube 31. By using the coil as the heat exchange tube 31, the contact area between the heat exchange tube 31 and the water can be increased, thereby improving the heat exchange effect. For example, in this embodiment, the housing 32 is a sealed water tank with a thickness of 5mm, a length of 1000mm, a width of 300mm, and a height of 600mm. The coil is a three-layer double-row coil made of DN40 stainless steel seamless pipe and welded elbows, welded using an argon arc welding machine to a specification of 900mm in length, 250mm in width, and 500mm in height. The coil and the housing 32 are welded together, and a pressure test is conducted to ensure that there is no leakage at the coil, housing, and interfaces.

[0054] Preferably, such as Figures 6 to 8 As shown, the height of the oil inlet 301 is lower than that of the oil outlet 302. The coil is arranged around the inner wall of the shell 32 along an axis from low to high, and the height of the water inlet 303 is also lower than that of the water outlet 304. That is to say, both oil and water in the oil-water heat exchanger 3 adopt a "low inlet, high outlet" flow direction, which is beneficial to improving the heat exchange efficiency between oil and water. Specifically, in this embodiment, one side of the sealed water tank has an opening at the lower part for the oil inlet 301 of the coil DN40 and an opening at the higher part for the water outlet 304 of the water chamber DN25. On the opposite side, the lower part has an opening for the water inlet 303 of the water chamber DN25 and an opening at the higher part for the oil outlet 302 of the coil DN40.

[0055] Preferably, a control component can also be provided, and the first valve 54, the second valve 55, the third valve 56, the temperature sensor 8, the water pump 6, and the level gauge 21 can all be connected to the signal to realize automatic control of the entire system.

[0056] For example, when the temperature sensor 8 detects that the oil temperature is higher than 50°C, the water pump 6 is automatically started, the first valve 54 is opened, the second valve 55 is closed, and the opening of the third valve 56 is adjusted according to the level gauge 21 to circulate cold water to cool the gear oil until the oil temperature is lower than 49°C, at which point the water pump 6 is stopped. Conversely, when the detected oil temperature is lower than 20°C, the water pump 6 is automatically started, the second valve 55 is opened, the first valve 54 is closed, and the opening of the third valve 56 is adjusted according to the level gauge 21 to circulate hot water to cool the gear oil until the oil temperature is higher than 21°C, at which point the water pump 6 is stopped.

[0057] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An oil temperature management system, characterized in that, include: An oil-water heat exchanger (3) is provided, which has an oil inlet (301), an oil outlet (302), a water inlet (303), and a water outlet (304). A heat exchange tube (31) and a water chamber are provided inside the oil-water heat exchanger (3). The heat exchange tube (31) is connected to the oil inlet (301) and the oil outlet (302). The water chamber is connected to the water inlet (303) and the water outlet (304). Gear oil can flow through the oil inlet (301) and the oil outlet (302) through the heat exchange tube (31) and exchange heat with the water in the water chamber in the heat exchange tube (31). A water storage tank (2) is provided, and a water supply pipe (51) is connected between the water storage tank (2) and the water inlet (303). A return pipe (52) is connected between the water storage tank (2) and the water outlet (304). The water storage tank (2) can store hot water or cold water. Both the water supply pipe (51) and the water storage tank (2) are connected to a cold water supply pipe (53). The hot water or cold water can be selectively input into the oil-water heat exchanger (3) through the water supply pipe (51).

2. The oil temperature management system according to claim 1, characterized in that, The oil-water heat exchanger (3) includes a shell (32) and a coil. The coil is disposed inside the shell (32). The water cavity is formed between the shell (32) and the coil. The oil inlet (301), the oil outlet (302), the water inlet (303), and the water outlet (304) are disposed in the shell (32). The coil is configured as the heat exchange tube (31), and the coil is connected to the oil inlet (301) and the oil outlet (302).

3. The oil temperature management system according to claim 2, characterized in that, The height of the oil inlet (301) is lower than the height of the oil outlet (302). The coil is arranged inside the housing (32) along an axis from low to high around the inner wall of the housing (32). The height of the inlet (303) is lower than the height of the outlet (304).

4. The oil temperature management system according to claim 1, characterized in that, A first valve (54) is connected between the cold water supply pipe (53) and the water supply pipe (51), and a second valve (55) is connected between the water storage tank (2) and the water supply pipe (51). Both the first valve (54) and the second valve (55) have on / off functions.

5. The oil temperature management system according to claim 1, characterized in that, The oil temperature management system also includes an oil pump (7), an oil tank (4), and a water pump (6). The oil pump (7) is connected to the heat exchange tube (31), the reducer (1), and the oil tank (4). The oil pump (7) can drive the gear oil to flow through the heat exchange tube (31), the reducer (1), and the oil tank (4). The water pump (6) is connected to the return pipe (52), the water tank (2), the water supply pipe (51), and the water cavity, and can drive the water to flow through the return pipe (52), the water tank (2), the water supply pipe (51), and the water cavity.

6. The oil temperature management system according to claim 5, characterized in that, The oil storage tank (4) is equipped with a filter (41).

7. The oil temperature management system according to claim 1, characterized in that, The return pipe (52) is equipped with a third valve (56), which is used to control the flow rate in the return pipe (52).

8. The oil temperature management system according to claim 5, characterized in that, The water storage tank (2) is equipped with a level gauge (21), and the level gauge (21) is connected to the water pump (6) via signal connection.

9. The oil temperature management system according to claim 7, characterized in that, The water storage tank (2) is equipped with a level gauge (21), and the level gauge (21) is connected to the third valve (56) via signal connection.

10. The oil temperature management system according to any one of claims 1-9, characterized in that, A temperature sensor (8) is provided at the oil outlet (302) to detect the temperature of the gear oil.

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