Water tank cooling system and excavator

Abstract

The water tank cooling system comprises a target water tank, a high-temperature cooling module and a low-temperature cooling module, the target water tank is used for storing cooling liquid, and the target water tank is connected with the high-temperature cooling module and the low-temperature cooling module in a water path circulation mode. The high-temperature cooling module is used for cooling an external engine through the cooling liquid provided by the target water tank, and the low-temperature cooling module is used for cooling pressurized air of the air supercharger through the cooling liquid provided by the target water tank. According to the water tank cooling system and the excavator, the cooling liquid can be provided for the high-temperature cooling module and the low-temperature cooling module through the target water tank, only one matched device of the target water tank needs to be designed, the space layout design of the cooling system is simplified, and therefore the layout space needed by the cooling system is reduced.

Description

Technical Field

[0001] This utility model relates to the field of excavator equipment technology, and in particular to a water tank cooling system and an excavator. Background Technology

[0002] Currently, excavating machinery such as mining hydraulic excavators generally have two independent circulating water circuits. The high-temperature cooling water circuit is used to cool the engine block and cylinder head, and the water temperature requirement is ≤100℃; the low-temperature cooling water circuit is used to cool the boosted air, and the water temperature requirement is ≤76℃.

[0003] In practical applications, excavator engine cooling systems consist of two independent circulating water circuits, each with different temperature requirements. Therefore, auxiliary water tanks are needed for each circuit, resulting in two independent auxiliary water tanks to ensure normal system operation. However, each independent auxiliary water tank requires the installation of supporting components such as degassing pipes, return water pipes, and liquid level alarms. This means that both auxiliary water tanks require dual-design of their components, making the cooling system's spatial layout design cumbersome and increasing the required space within the excavator. Therefore, simplifying the cooling system's spatial layout design to reduce the required space has become a pressing issue. Utility Model Content

[0004] This utility model discloses a water tank cooling system and an excavator, which can simplify the spatial layout design of the cooling system and reduce the layout space required for the cooling system.

[0005] To achieve the above objectives, in a first aspect, this utility model discloses a water tank cooling system, the system comprising:

[0006] A target water tank, wherein the target water tank is used to store coolant;

[0007] A high-temperature cooling module is circulated with the target water tank. The cooling section of the high-temperature cooling module is located on the outer casing of the engine. The high-temperature cooling module is used to cool the engine using the coolant.

[0008] A low-temperature cooling module is connected to the target water tank via a water circulation system. The cooling section of the low-temperature cooling module is located at an external air booster. The low-temperature cooling module is used to cool the pressurized air of the air booster using the coolant.

[0009] As an optional implementation, in an embodiment of the first aspect of this utility model, the high-temperature cooling module includes:

[0010] A high-temperature cooling water circuit, which is the cooling section of the high-temperature cooling module, is connected to the target water tank circuit. The high-temperature cooling water circuit is located on the outer casing of the engine to cool the engine using the coolant.

[0011] A high-temperature radiator is circulated with the high-temperature cooling water circuit and is used to dissipate heat from the coolant after the cooling operation.

[0012] As an optional implementation, in an embodiment of the first aspect of this utility model, the high-temperature cooling module further includes:

[0013] The first thermostat has its inlet connected to the outlet of the high-temperature cooling water circuit, its first outlet connected to the high-temperature radiator water circuit, and its second outlet connected to the inlet of the high-temperature cooling water circuit. The first thermostat is used to detect the first actual temperature of the coolant discharged from the high-temperature cooling water circuit and a preset first temperature threshold, and to switch the water circuit connection state between the inlet of the first thermostat and the first outlet and the second outlet of the first thermostat, respectively.

[0014] As an optional implementation, in an embodiment of the first aspect of this utility model, the cryogenic cooling module includes:

[0015] The low-temperature cooling water circuit is the cooling section of the low-temperature cooling module. The low-temperature cooling water circuit is connected to the target water tank water circuit. The low-temperature cooling water circuit is located at the air booster to cool the boosted air of the air booster using the coolant.

[0016] A low-temperature radiator is circulated with the low-temperature cooling water circuit and is used to dissipate heat from the coolant after the cooling operation.

[0017] As an optional implementation, in an embodiment of the first aspect of this utility model, the cryogenic cooling module further includes:

[0018] The second thermostat has its inlet connected to the outlet of the low-temperature cooling water circuit, its first outlet connected to the low-temperature radiator water circuit, and its second outlet connected to the inlet of the low-temperature cooling water circuit. The second thermostat is used to detect the second actual temperature of the coolant discharged from the low-temperature cooling water circuit and a preset second temperature threshold, and to switch the water circuit connection state between the inlet and outlet of the second thermostat and the second outlet of the second thermostat.

[0019] As an optional implementation, in an embodiment of the first aspect of this utility model, the target water tank includes:

[0020] The water tank body has an internal receiving cavity for storing the coolant.

[0021] A high-temperature return water pipe is provided on the return water side of the water tank body, the high-temperature return water pipe is connected to the receiving cavity, and the high-temperature return water pipe is connected to the water circuit of the high-temperature cooling module.

[0022] A low-temperature return water pipe is provided on the return water side of the water tank body, the low-temperature return water pipe is connected to the receiving cavity, and the low-temperature return water pipe is connected to the water circuit of the low-temperature cooling module.

[0023] As an optional implementation, in an embodiment of the first aspect of this utility model, the target water tank further includes:

[0024] A partition is disposed in the receiving cavity and between the high-temperature return water pipe and the low-temperature return water pipe to isolate the pipe opening of the high-temperature return water pipe and the pipe opening of the low-temperature return water pipe. An opening is provided at one end of the partition near the return water side of the water tank body.

[0025] As an optional implementation, in an embodiment of the first aspect of this utility model, the target water tank further includes:

[0026] A filling port is provided on the filling side of the water tank body, and the filling port is connected to the receiving cavity;

[0027] A degassing pipe is provided on the filling side of the water tank body. The degassing pipe is connected to the receiving cavity and is connected to the degassing end of the high-temperature cooling module and the degassing end of the low-temperature cooling module, respectively.

[0028] As an optional implementation, in an embodiment of the first aspect of this utility model, the target water tank further includes:

[0029] A liquid level observation mirror is disposed on the horizontal and vertical sides of the water tank body, and the liquid level observation mirror is a transparent lens.

[0030] A water level sensor is disposed on the horizontal and vertical sides of the water tank body, and the water level sensor is used to detect the water level of the coolant in the receiving cavity.

[0031] Secondly, this utility model discloses an excavator, characterized in that the excavator comprises:

[0032] The water tank cooling system as described in the first aspect of this utility model;

[0033] The excavator body, and the water tank cooling system is installed on the excavator body.

[0034] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0035] The water tank cooling system provided by this utility model provides coolant to both the high-temperature cooling module and the low-temperature cooling module through a single target water tank. This means that only one set of supporting components for the target water tank needs to be designed, thereby simplifying the spatial layout design of the cooling system and reducing the required layout space.

[0036] The excavator provided by this utility model adopts the above-mentioned water tank cooling system, which provides coolant to the high-temperature cooling module and the low-temperature cooling module through a target water tank. This makes it possible to design only one set of supporting components for the target water tank, thereby simplifying the spatial layout design of the cooling system and reducing the layout space required for the cooling system in the excavator. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the water tank cooling system in this utility model;

[0038] Figure 2 This is a schematic diagram of a specific embodiment of the water tank cooling system of this utility model;

[0039] Figure 3 This is a structural schematic diagram of a specific embodiment of the target water tank in this utility model.

[0040] The meanings of the reference numerals in the attached figures are as follows:

[0041] The components include: target water tank 100, water tank body 110, high temperature return water pipe 120, low temperature return water pipe 130, partition 140, filling port 150, degassing pipe 160, liquid level observation mirror 170, water level sensor 180, high temperature cooling module 200, high temperature cooling water circuit 210, high temperature radiator 220, first thermostat 230, low temperature cooling module 300, low temperature cooling water circuit 310, low temperature radiator 320, and second thermostat 330. Detailed Implementation

[0042] 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.

[0043] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0044] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0045] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0046] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0047] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0048] Currently, excavating machinery such as mining hydraulic excavators generally have two independent circulating water circuits. The high-temperature cooling water circuit is used to cool the engine block and cylinder head, and the water temperature requirement is ≤100℃; the low-temperature cooling water circuit is used to cool the boosted air, and the water temperature requirement is ≤76℃.

[0049] In practical applications, excavator engine cooling systems consist of two independent circulating water circuits, each with different temperature requirements. Therefore, auxiliary water tanks are needed for each circuit, resulting in two independent auxiliary water tanks to ensure normal system operation. However, each independent auxiliary water tank requires the installation of supporting components such as degassing pipes, return water pipes, and liquid level alarms. This means that both auxiliary water tanks require dual-design of their components, making the cooling system's spatial layout design cumbersome and increasing the required space within the excavator. Therefore, simplifying the cooling system's spatial layout design to reduce the required space has become a pressing issue.

[0050] In response, this utility model discloses a water tank cooling system and an excavator, which can simplify the spatial layout design of the cooling system and reduce the layout space required for the cooling system.

[0051] like Figure 1 As shown, this utility model discloses a water tank cooling system, which includes a target water tank 100, a high-temperature cooling module 200, and a low-temperature cooling module 300. The target water tank 100 stores coolant; the high-temperature cooling module 200 is circulatedly connected to the target water tank 100, and its cooling section is located on the external engine casing, where it cools the engine using coolant; the low-temperature cooling module 300 is circulatedly connected to the target water tank 100, and its cooling section is located on the external air compressor, where it cools the compressed air from the air compressor using coolant.

[0052] In this embodiment, refer to Figure 1 The target water tank 100 can be an auxiliary water tank for construction machinery such as excavators, and it can store coolant. The target water tank 100 is connected to the high-temperature cooling module 200 and the low-temperature cooling module 300 via water circulation, meaning it can supply coolant to both modules. It is understood that the water temperature of the coolant flowing through the high-temperature cooling module 200 can be ≤100℃, and the water temperature of the coolant flowing through the low-temperature cooling module 300 can be ≤76℃.

[0053] The high-temperature cooling module 200 has its cooling section located at the engine casing of the external construction machinery. The high-temperature cooling module 200 utilizes the coolant provided by the target water tank 100 to cool the engine casing. The engine casing can be the engine block, cylinder head, etc. The low-temperature cooling module 300 has its cooling section located at the air supercharger of the external construction machinery. The low-temperature cooling module 300 utilizes the coolant provided by the target water tank 100 to cool the pressurized air of the air supercharger.

[0054] As can be seen, the water tank cooling system of this utility model can be connected to the high-temperature cooling module 200 and the low-temperature cooling module 300 through a water circulation system via a target water tank 100, so as to provide coolant to the high-temperature cooling module 200 and the low-temperature cooling module 300 respectively. This design simplifies the design of the cooling system's spatial layout, thereby reducing the required layout space and the cost of the water tank cooling system.

[0055] like Figure 2 As shown, in an optional embodiment, the high-temperature cooling module 200 includes a high-temperature cooling water passage 210 and a high-temperature radiator 220. The high-temperature cooling water passage 210 is the cooling section of the high-temperature cooling module 200, and is connected to the target water tank 100. The high-temperature cooling water passage 210 is located at the outer casing of the engine to cool the engine using coolant. The high-temperature radiator 220 is circulatedly connected to the high-temperature cooling water passage 210 and is used to dissipate heat from the coolant after the cooling operation.

[0056] In this optional embodiment, refer to Figure 2 The high-temperature cooling module 200 consists of a high-temperature cooling water channel 210 and a high-temperature radiator 220. The high-temperature cooling water channel 210 is the cooling part of the high-temperature cooling module 200. The high-temperature cooling water channel 210 is provided on the outer casing of the engine and is connected to the target water tank 100. The high-temperature cooling water channel 210 can use the coolant provided by the target water tank 100 to cool the outer casing of the engine.

[0057] The high-temperature radiator 220 is connected to both the inlet and outlet of the high-temperature cooling water circuit 210 to achieve coolant circulation between the high-temperature cooling water circuit 210 and the high-temperature radiator 220. The high-temperature radiator 220 dissipates heat from the coolant discharged from the high-temperature cooling water circuit 210 after the cooling operation, lowering the coolant temperature to a level suitable for reuse in cooling operations. After heat dissipation, the coolant is returned from the high-temperature radiator 220 to the inlet of the high-temperature cooling water circuit 210, thus achieving coolant circulation within the high-temperature cooling module 200. It is understood that, referring to... Figure 2 A water pump can be added to the high-temperature cooling module 200 to provide pumping power for the circulation of coolant in the high-temperature cooling module 200.

[0058] As can be seen, this optional embodiment can also achieve the recycling of coolant in the high-temperature cooling module 200 by means of the water circulation connection between the high-temperature radiator 220 and the high-temperature cooling water circuit 210, and by the high-temperature radiator 220 dissipating heat from the coolant discharged from the high-temperature cooling water circuit 210 after the cooling operation, so that the water temperature of the coolant is reduced to a level that can be used for cooling operation again. This reduces the waste of coolant.

[0059] like Figure 2 As shown, in an optional embodiment, the high-temperature cooling module 200 further includes a first thermostat 230. The inlet of the first thermostat 230 is connected to the outlet of the high-temperature cooling water circuit 210, the first outlet of the first thermostat 230 is connected to the water circuit of the high-temperature radiator 220, and the second outlet of the first thermostat 230 is connected to the inlet of the high-temperature cooling water circuit 210. The first thermostat 230 is used to detect the first actual temperature of the coolant discharged from the high-temperature cooling water circuit 210 and a preset first temperature threshold, and to switch the water circuit connection state between the inlet of the first thermostat 230 and the first outlet and the second outlet of the first thermostat 230, respectively.

[0060] In this optional embodiment, refer to Figure 2 The outlet of the high-temperature cooling water circuit 210 is connected to the inlet water circuit of the first thermostat 230, the first outlet of the first thermostat 230 is connected to the water circuit of the high-temperature radiator 220, and the second outlet of the first thermostat 230 is connected to the inlet water circuit of the high-temperature cooling water circuit 210.

[0061] The first thermostat 230 detects the first actual temperature of the coolant discharged from the high-temperature cooling water circuit 210 and compares this first actual temperature with a preset first temperature threshold. If the first actual temperature of the coolant is higher than the first temperature threshold, it indicates that the coolant needs to dissipate heat before being used for cooling again. In this case, the water circuit of the inlet end of the first thermostat 230 is switched to the first outlet end of the first thermostat 230, so that the high-temperature radiator 220 dissipates heat from the coolant supplied by the first thermostat 230, thereby lowering the coolant temperature to a level suitable for cooling again. If the first actual temperature of the coolant is lower than the first temperature threshold, it indicates that the coolant can be used for cooling again without dissipation. In this case, the water circuit of the inlet end of the first thermostat 230 is switched to the second outlet end of the first thermostat 230, so that the inlet end of the high-temperature cooling water circuit 210 is cooled according to the coolant supplied by the first thermostat 230.

[0062] As can be seen, this optional embodiment can also switch the circulation route of the coolant by judging the coolant temperature through the first thermostat 230, so that the coolant can be directly transported back to the high-temperature cooling water circuit 210 without passing through the high-temperature radiator 220 when no heat dissipation is required, thereby reducing the energy consumption of the high-temperature radiator 220 in the water tank cooling system and achieving the energy-saving effect of the water tank cooling system.

[0063] like Figure 2 As shown, in an optional embodiment, the cryogenic cooling module 300 includes a cryogenic cooling water channel 310 and a cryogenic radiator 320. The cryogenic cooling water channel 310 is the cooling section of the cryogenic cooling module 300. The cryogenic cooling water channel 310 is connected to the target water tank 100 and is located at the air booster to cool the pressurized air of the air booster using coolant. The cryogenic radiator 320 is circulated with the cryogenic cooling water channel 310 and is used to dissipate heat from the coolant after the cooling operation.

[0064] In this optional embodiment, refer to Figure 2 The low-temperature cooling module 300 consists of a low-temperature cooling water channel 310 and a low-temperature radiator 320. The low-temperature cooling water channel 310 is the cooling part of the low-temperature cooling module 300. The air booster is equipped with a low-temperature cooling water channel 310, which is connected to the target water tank 100. The low-temperature cooling water channel 310 can use the coolant provided by the target water tank 100 to cool the pressurized air in the air booster.

[0065] The low-temperature radiator 320 is connected to both the inlet and outlet of the low-temperature cooling water circuit 310 to achieve coolant circulation between the low-temperature cooling water circuit 310 and the low-temperature radiator 320. The low-temperature radiator 320 dissipates heat from the coolant discharged from the low-temperature cooling water circuit 310 after the cooling operation, lowering the coolant temperature to a level suitable for reuse in cooling operations. After heat dissipation, the coolant is returned from the low-temperature radiator 320 to the inlet of the low-temperature cooling water circuit 310, thus achieving coolant circulation within the low-temperature cooling module 300. It is understood that, referring to... Figure 2 A water pump can be added to the low-temperature cooling module 300 to provide pumping power for the circulation of coolant in the high-temperature cooling module 200.

[0066] As can be seen, this optional embodiment can also achieve the recycling of coolant in the low-temperature cooling module 300 by means of the water circulation connection between the low-temperature radiator 320 and the low-temperature cooling water circuit 310, and by the low-temperature radiator 320 dissipating heat from the coolant discharged from the low-temperature cooling water circuit 310 after the cooling operation, so that the water temperature of the coolant is reduced to a level that can be used for cooling operation again. This reduces the waste of coolant.

[0067] like Figure 2 As shown, in an optional embodiment, the low-temperature cooling module 300 further includes a second thermostat 330. The inlet of the second thermostat 330 is connected to the outlet of the low-temperature cooling water circuit 310, the first outlet of the second thermostat 330 is connected to the water circuit of the low-temperature radiator 320, and the second outlet of the second thermostat 330 is connected to the inlet of the low-temperature cooling water circuit 310. The second thermostat 330 is used to detect the second actual temperature of the coolant discharged from the low-temperature cooling water circuit 310 and a preset second temperature threshold, and to switch the water circuit connection state between the inlet of the second thermostat 330 and the first outlet of the second thermostat 330 and the second outlet of the second thermostat 330.

[0068] In this optional embodiment, refer to Figure 2 The outlet of the low-temperature cooling water circuit 310 is connected to the inlet water circuit of the second thermostat 330, the first outlet of the second thermostat 330 is connected to the water circuit of the low-temperature radiator 320, and the second outlet of the second thermostat 330 is connected to the inlet water circuit of the low-temperature cooling water circuit 310.

[0069] The second thermostat 330 can detect the second actual temperature of the coolant discharged from the low-temperature cooling water circuit 310 and compare this second actual temperature with a preset second temperature threshold. If the second actual temperature of the coolant is higher than the second temperature threshold, it indicates that the coolant needs to dissipate heat before it can be used for cooling again. In this case, the water circuit of the inlet end of the second thermostat 330 is switched to the first outlet end of the second thermostat 330, so that the low-temperature radiator 320 dissipates heat from the coolant supplied by the second thermostat 330, thereby lowering the coolant temperature to a level suitable for cooling again. If the second actual temperature of the coolant is lower than the second temperature threshold, it indicates that the coolant can be used for cooling again without dissipation. In this case, the water circuit of the inlet end of the second thermostat 330 is switched to the second outlet end of the second thermostat 330, so that the water circuit of the inlet end of the low-temperature cooling water circuit 310 is cooled according to the coolant supplied by the second thermostat 330.

[0070] As can be seen, this optional embodiment can also switch the circulation route of the coolant by judging the coolant temperature through the second thermostat 330, so that the coolant can be directly transported back to the low-temperature cooling water circuit 310 without passing through the low-temperature radiator 320 when no heat dissipation is required, thereby reducing the energy consumption of the low-temperature radiator 320 in the water tank cooling system and achieving the energy-saving effect of the water tank cooling system.

[0071] like Figure 3 As shown, in an optional embodiment, the target water tank 100 includes: a water tank body 110, a high-temperature return water pipe 120, and a low-temperature return water pipe 130. The water tank body 110 has an internal receiving cavity for storing coolant; the high-temperature return water pipe 120 is disposed on the return water side of the water tank body 110, communicates with the receiving cavity, and is connected to the water circuit of the high-temperature cooling module 200; the low-temperature return water pipe 130 is disposed on the return water side of the water tank body 110, communicates with the receiving cavity, and is connected to the water circuit of the low-temperature cooling module 300.

[0072] In this optional embodiment, refer to Figure 3 The water tank body 110 has an internal receiving cavity where coolant can be stored. It is understood that... Figure 3 To facilitate the display of the interior of the containment cavity, part of the front surface of the water tank body 110 is made transparent, while the actual front surface of the water tank body 110 is sealed.

[0073] The return water side of the water tank body 110 is located on the lower surface of the water tank body 110. Both the high-temperature return water pipe 120 and the low-temperature return water pipe 130 are located on the return water side of the water tank body 110, and both are connected to the receiving cavity. The high-temperature cooling module 200 is connected to the high-temperature return water pipe 120 so that the coolant in the receiving cavity of the water tank body 110 can be transported to the high-temperature cooling module 200 through the high-temperature return water pipe 120. The low-temperature cooling module 300 is connected to the low-temperature return water pipe 130 so that the coolant in the receiving cavity of the water tank body 110 can be transported to the low-temperature cooling module 300 through the low-temperature return water pipe 130.

[0074] like Figure 3 As shown, in an optional embodiment, the target water tank 100 further includes a partition 140. The partition 140 is disposed in the receiving cavity and between the high-temperature return water pipe 120 and the low-temperature return water pipe 130 to isolate the pipe opening of the high-temperature return water pipe 120 and the pipe opening of the low-temperature return water pipe 130. An opening is provided at one end of the partition 140 near the return water side of the water tank body 110.

[0075] In this optional embodiment, refer to Figure 3 The water tank body 110 also has a baffle 140 in its receiving cavity. The baffle 140 is specifically positioned between the high-temperature return water pipe 120 and the low-temperature return water pipe 130. The inlets of the high-temperature return water pipe 120 and the low-temperature return water pipe 130 are located on different sides of the baffle 140, dividing the receiving cavity of the water tank body 110 into left and right sides. The baffle 140 isolates the inlets of the high-temperature return water pipe 120 and the low-temperature return water pipe 130, preventing turbulence when the coolant flows out of the receiving cavity from these pipes. This avoids air bubbles being drawn into the return water of the water tank body 110 when the construction machinery is moving uphill, downhill, or shaking, thus improving the reliability of the water tank cooling system. An opening is provided at the bottom of the baffle 140 to ensure the coolant level is balanced in the receiving cavities on both sides.

[0076] As can be seen, this optional embodiment can also prevent turbulence of coolant in the containment cavity by isolating the port of the high temperature return water pipe 120 and the port of the low temperature return water pipe 130 through the partition 140, and ensure the liquid level balance of coolant in the containment cavities on both sides through the opening of the partition 140.

[0077] like Figure 3As shown, in an optional embodiment, the target water tank 100 further includes a filling port 150 and a degassing pipe 160. The filling port 150 is located on the filling side of the water tank body 110 and communicates with the receiving cavity; the degassing pipe 160 is located on the filling side of the water tank body 110 and communicates with the receiving cavity, and is connected to the degassing end of the high-temperature cooling module 200 and the degassing end of the low-temperature cooling module 300, respectively.

[0078] In this optional embodiment, refer to Figure 3 The filling side of the water tank body 110 is located on the upper surface of the water tank body 110, and both the filling port 150 and the degassing pipe 160 are located on the filling side of the water tank body 110. The filling port 150 communicates with the receiving cavity of the water tank body 110, meaning that coolant can be added to the water tank body 110 through the filling port 150. The filling port 150 can be sealed by a pressure cap, and the filling port 150 also has an overflow pipe to drain excess coolant.

[0079] The degassing pipe 160 is connected to the receiving cavity of the water tank body 110, and is connected to the degassing end of the high-temperature cooling module 200 and the degassing end of the low-temperature cooling module 300, respectively. (Refer to...) Figure 2 The degassing end of the high-temperature cooling module 200 is the degassing end of the first thermostat 230 and the degassing end of the high-temperature radiator 220. The degassing end of the low-temperature cooling module 300 is the degassing end of the second thermostat 330 and the degassing end of the low-temperature radiator 320. The bubbles or gas generated by the thermal expansion of the coolant in the water tank cooling system can be discharged to the outside through the degassing pipe 160.

[0080] As can be seen, this optional embodiment can also add coolant to the water tank body 110 through the filling port 150, and discharge the bubbles or gas generated by the thermal expansion of the coolant in the water tank cooling system to the outside through the degassing pipe 160, so as to ensure the reliability of the water tank cooling system.

[0081] like Figure 3 As shown, in an optional embodiment, the target water tank 100 further includes a liquid level observation mirror 170 and a water level sensor 180. The liquid level observation mirror 170 is disposed on the horizontal and vertical sides of the water tank body 110, and the liquid level observation mirror 170 is a transparent lens; the water level sensor 180 is disposed on the horizontal and vertical sides of the water tank body 110, and the water level sensor 180 is used to detect the water level of the coolant in the containment cavity.

[0082] In this optional embodiment, refer to Figure 3The horizontal and vertical sides of the water tank body 110 form the front surface of the water tank body 110. Both the liquid level observation mirror 170 and the water level sensor 180 are located on these horizontal and vertical sides. The liquid level observation mirror 170 is a transparent lens, allowing observation of the remaining amount of coolant inside the containment cavity. The water level sensor 180 detects the coolant level in the containment cavity. Simultaneously, the water level sensor 180 is offset from the degassing pipe 160 to prevent liquid from the degassing pipe 160 from dripping onto the water level sensor 180 and damaging it, thus preventing the water level sensor 180 from reporting a low liquid level even when the containment cavity is actually low on water.

[0083] As can be seen, this optional embodiment can also monitor the coolant level through the liquid level observation mirror 170 and the water level sensor 180.

[0084] This utility model also discloses an excavator, which includes an excavator body and a water tank cooling system described in the above embodiments of this utility model, wherein the water tank cooling system is installed on the excavator body.

[0085] As can be seen, in this embodiment, the excavator can use the above-mentioned water tank cooling system to provide coolant to the high-temperature cooling module 200 and the low-temperature cooling module 300 through a target water tank 100, so that only one set of supporting components for the target water tank 100 needs to be designed, thereby simplifying the spatial layout design of the cooling system and reducing the layout space required for the cooling system in the excavator.

[0086] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A water tank cooling system characterized by, The system comprises: a target water tank for storing cooling liquid; a high-temperature cooling module in water circulation connection with the target water tank, a cooling part of the high-temperature cooling module being arranged at an outer shell of an external engine, the high-temperature cooling module being used for cooling the engine by using the cooling liquid; a low-temperature cooling module in water circulation connection with the target water tank, a cooling part of the low-temperature cooling module being arranged at an external air supercharger, the low-temperature cooling module being used for cooling supercharged air of the air supercharger by using the cooling liquid.

2. The water tank cooling system of claim 1, wherein, The high-temperature cooling module comprises: a high-temperature cooling water circuit, which is the cooling part of the high-temperature cooling module, in water connection with the target water tank, arranged at the outer shell of the engine for cooling the engine by using the cooling liquid; a high-temperature radiator in water circulation connection with the high-temperature cooling water circuit, used for radiating the cooling liquid after cooling operation.

3. The water tank cooling system of claim 2, wherein, The high-temperature cooling module further comprises: a first thermostat, a water inlet end of the first thermostat being in water connection with a water outlet end of the high-temperature cooling water circuit, a first water outlet end of the first thermostat being in water connection with the high-temperature radiator, a second water outlet end of the first thermostat being in water connection with a water inlet end of the high-temperature cooling water circuit, the first thermostat being used for detecting a first actual temperature of the cooling liquid discharged by the high-temperature cooling water circuit and a preset first temperature threshold value, and switching a water circuit conduction state between the water inlet end of the first thermostat and the first water outlet end and the second water outlet end of the first thermostat, respectively.

4. The water tank cooling system of claim 1, wherein, The low-temperature cooling module comprises: a low-temperature cooling water circuit, which is the cooling part of the low-temperature cooling module, in water connection with the target water tank, arranged at the air supercharger for cooling the supercharged air of the air supercharger by using the cooling liquid; a low-temperature radiator in water circulation connection with the low-temperature cooling water circuit, used for radiating the cooling liquid after cooling operation.

5. The water tank cooling system of claim 4, wherein, The low-temperature cooling module further comprises: a second thermostat, a water inlet end of the second thermostat being in water connection with a water outlet end of the low-temperature cooling water circuit, a first water outlet end of the second thermostat being in water connection with the low-temperature radiator, a second water outlet end of the second thermostat being in water connection with a water inlet end of the low-temperature cooling water circuit, the second thermostat being used for detecting a second actual temperature of the cooling liquid discharged by the low-temperature cooling water circuit and a preset second temperature threshold value, and switching a water circuit conduction state between the water inlet end of the second thermostat and the first water outlet end and the second water outlet end of the second thermostat, respectively.

6. The water jacket cooling system according to any one of claims 1 to 5, characterized by, The target water tank comprises: a water tank body, an internal part of the water tank body having a receiving cavity for storing the cooling liquid; A high-temperature return water pipe is arranged on the return water side of the water tank body, and is in communication with the accommodating cavity and connected with the high-temperature cooling module water circuit. A low-temperature return water pipe is arranged on the return water side of the water tank body, and is in communication with the accommodating cavity and connected with the low-temperature cooling module water circuit.

7. The water tank cooling system of claim 6, wherein, The target water tank further comprises: A partition plate is arranged in the accommodating cavity and between the high-temperature return water pipe and the low-temperature return water pipe to isolate the pipe openings of the high-temperature return water pipe and the low-temperature return water pipe, and a through opening is formed in the end of the partition plate close to the return water side of the water tank body.

8. The water tank cooling system of claim 7, wherein, The target water tank further comprises: A filling port is arranged on the filling side of the water tank body, and is in communication with the accommodating cavity; A degassing pipe is arranged on the filling side of the water tank body, and is in communication with the accommodating cavity, and is connected with the degassing end of the high-temperature cooling module and the degassing end of the low-temperature cooling module, respectively.

9. The water tank cooling system of claim 8, wherein, The target water tank further comprises: A liquid level observation mirror is arranged on the horizontal and vertical side of the water tank body, and is a transparent lens; A water level sensor is arranged on the horizontal and vertical side of the water tank body, and is used to detect the water level of the cooling liquid in the accommodating cavity.

10. An excavator characterized by comprising: The excavator comprises: The water tank cooling system according to any one of claims 1 to 9; An excavator body, wherein the water tank cooling system is installed on the excavator body.

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