Cooling system and fire truck

Abstract

The application discloses a cooling system and a fire truck, and relates to the technical field of firefighting. The cooling system is used for cooling a first to-be-cooled member, and comprises a pressurizing assembly, a first pipe, a first heat exchanger, a second pipe, a first valve and a second valve. The pressurizing assembly is provided with a first water inlet and a first water outlet, and the first water inlet is used for being communicated with a first water source. One end of the first pipe is communicated with the first water outlet, and the other end of the first pipe is communicated with the first to-be-cooled member. The first heat exchanger is installed on the first pipe and located between the pressurizing assembly and the first to-be-cooled member. One end of the second pipe is used for being communicated with a second water source, and the other end of the second pipe is communicated with the first pipe and located between the pressurizing assembly and the first heat exchanger. The first valve is installed on the second pipe. The second valve is installed on the first pipe and located between the first water outlet and the second pipe. The cooling system is used for cooling the engine by the water cooling mode. Compared with air cooling, the water cooling mode has higher heat dissipation efficiency, can meet the heat dissipation demand of the high-power fire truck engine, and improves the heat dissipation efficiency of the engine.

Description

Technical Field

[0001] This application relates to the technical field of fire protection, and more particularly to a cooling system and a fire truck. Background Technology

[0002] When fire trucks are on firefighting missions, their engines need to operate under high load for extended periods. During operation, the engine generates a significant amount of heat; if this heat is not effectively dissipated, it can lead to overheating, affecting performance, shortening lifespan, and even causing malfunctions.

[0003] In related technologies, engines often use air cooling. Air cooling systems rely on airflow for heat dissipation, and their cooling efficiency is greatly affected by factors such as ambient temperature and wind speed. This makes it difficult to meet the high heat dissipation requirements of high-power engines, resulting in poor engine cooling performance. Utility Model Content

[0004] Based on this, this application provides a cooling system and a fire truck to solve the problem of poor engine cooling performance in fire trucks in related technologies.

[0005] In a first aspect, embodiments of this application provide a cooling system for cooling a first component to be cooled, the cooling system comprising:

[0006] The booster assembly has a first inlet and a first outlet, wherein the first inlet is used to connect to a first water source;

[0007] The first pipe has one end connected to the first water outlet and the other end connected to the first component to be cooled.

[0008] A first heat exchanger is installed on the first tube and located between the pressurization assembly and the first component to be cooled;

[0009] The second pipe has one end connected to a second water source and the other end connected to the first pipe, and is located between the pressurization assembly and the first heat exchanger;

[0010] The first valve is installed in the second pipe;

[0011] The second valve is installed on the first pipe and located between the first outlet and the second pipe.

[0012] In some embodiments, the cooling system further includes:

[0013] The first check valve is installed on the first pipe and located between the first outlet and the second valve.

[0014] In some embodiments, the cooling system further includes:

[0015] A pressure relief pipe is connected to the first pipe and located between the second valve and the first heat exchanger;

[0016] A pressure relief valve is installed on the pressure relief pipe.

[0017] In some embodiments, the cooling system further includes:

[0018] A filter is installed in the first pipe and located between the pressure relief pipe and the first heat exchanger;

[0019] A pressure gauge is installed in the first tube and located between the filter and the first heat exchanger;

[0020] A drain pipe is connected to the drain port of the filter;

[0021] A drain valve is installed on the drain pipe.

[0022] In some embodiments, the booster assembly includes:

[0023] A floating pump having a first inlet and a second outlet;

[0024] The booster pump has a second inlet and a first outlet, and the second inlet and the second outlet are connected.

[0025] In some embodiments, the cooling system is further used to cool a second component to be cooled; the cooling system further includes:

[0026] The third pipe has one end connected to the first outlet and the other end connected to the second inlet;

[0027] The second heat exchanger is installed on the third tube; the second component to be cooled is installed on the third tube and located between the second heat exchanger and the second water inlet.

[0028] The third valve is installed on the third pipe and located between the first outlet and the second heat exchanger.

[0029] In some embodiments, the cooling system further includes:

[0030] The second check valve is installed in the third pipe and is located between the first outlet and the third valve.

[0031] In some embodiments, the second tube includes:

[0032] The main pipe, one end of which is connected to the second water source;

[0033] The first branch pipe has one end connected to the other end of the main pipe and the other end connected to the first pipe, and is located between the booster pump and the first heat exchanger; the first valve is installed on the first branch pipe; the second valve is located between the first outlet and the first branch pipe.

[0034] The second branch pipe has one end connected to the other end of the main pipe and the other end connected to the third pipe, and is located between the third valve and the second heat exchanger;

[0035] The cooling system also includes a third check valve, which is installed on the main pipe.

[0036] In some embodiments, the cooling system further includes:

[0037] The fourth valve is installed on the main pipe and connected in parallel with the third check valve.

[0038] Secondly, embodiments of this application provide a fire truck, including: the cooling system described in the first aspect.

[0039] This application has at least the following beneficial effects:

[0040] This application's cooling system uses water cooling to cool the engine. Compared to air cooling, water cooling has superior heat dissipation efficiency, meeting the heat dissipation requirements of high-power fire truck engines and improving engine cooling efficiency. Furthermore, the cooling system utilizes a coordinated design of the pressurization component and the second pipe, allowing it to draw water not only from unpressurized primary water sources such as rivers and streams, but also from pressurized secondary water sources such as fire hydrants. This ensures stable operation under various conditions, including insufficient primary water supply, pressurization component failure, or only pressurized water access, thereby guaranteeing continuous engine cooling and preventing engine overheating, performance degradation, or shutdown due to cooling interruptions. This makes it suitable for the complex and varied firefighting and rescue scenarios of fire trucks. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the cooling system in one or more embodiments of this application.

[0043] Figure 2 This is a schematic diagram of the cooling system in one or more embodiments of this application when the cooling system is supplied with water from a first water source and both the floating pump and the submersible pump are working.

[0044] Figure 3 This is a schematic diagram of the cooling system supplied with water from a second water source in one or more embodiments of this application.

[0045] Figure 4 This is a schematic diagram of the cooling system in one or more embodiments of this application when the cooling system is supplied with water from a first water source and the floating pump is working while the booster pump is not working.

[0046] Explanation of reference numerals in the attached figures:

[0047] 100-Cooling system, 110-Boosting assembly, 110a-First inlet, 110b-First outlet, 110c-Second inlet, 110d-Second outlet, 111-Floating pump, 112-Boosting pump, 115-First pipe, 120-First heat exchanger, 130-Second pipe, 131-Main pipe, 132-First branch pipe, 133-Second branch pipe, 135-First valve, 140-Second valve, 145 - First check valve, 147- Pressure relief pipe, 150- Pressure relief valve, 155- Filter, 157- Pressure gauge, 160- Drain pipe, 165- Drain valve, 170- Third pipe, 175- Second heat exchanger, 180- Third valve, 185- Second check valve, 190- Third check valve, 195- Fourth valve, 200- First component to be cooled, 300- First water source, 400- Second water source, 500- Second component to be cooled. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0051] The terms “first,” “second,” and “third” (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0052] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0053] When fire trucks are on firefighting missions, their engines need to operate under high load for extended periods. During operation, the engine generates a significant amount of heat; if this heat is not effectively dissipated, it can lead to overheating, affecting performance, shortening lifespan, and even causing malfunctions.

[0054] For domestically produced pump fire trucks with a displacement of less than 400L / S, the power of the engine driving the booster pump system is relatively small, and air cooling is generally used. However, as the flow rate and head of the booster pump in pump fire trucks have increased (e.g., the BP600 pump fire truck has a displacement of up to 620L / S, and the power of the engine driving it has increased to 895kW), if traditional air cooling is still used, the cooling system will be too large, failing to meet the width and height requirements of the vehicle and thus not complying with fire equipment regulations. Furthermore, air cooling systems rely on airflow for heat dissipation, and their cooling efficiency is greatly affected by factors such as ambient temperature and wind speed, making it difficult to meet the high heat dissipation requirements of high-power engines, resulting in poor engine cooling performance.

[0055] In view of this, the inventors designed a cooling system 100 and a fire truck. The cooling system 100 cools the engine by means of water cooling. Compared with air cooling, water cooling has better heat dissipation efficiency and can meet the heat dissipation requirements of high-power fire truck engines, thereby improving the engine's heat dissipation efficiency.

[0056] The cooling system 100 and the fire truck provided in the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0057] like Figure 1As shown, the cooling system 100 is used to cool the first component 200 to be cooled. The cooling system 100 includes: a pressurization assembly 110, a first pipe 115, a first heat exchanger 120, a second pipe 130, a first valve 135, and a second valve 140. The pressurization assembly 110 has a first inlet 110a and a first outlet 110b. The first inlet 110a is connected to a first water source 300. One end of the first pipe 115 is connected to the first outlet 110b, and the other end is connected to the first component 200 to be cooled. The first heat exchanger 120 is installed on the first pipe 115 and is located between the pressurization assembly 110 and the first component 200 to be cooled. One end of the second pipe 130 is connected to a second water source 400, and the other end is connected to the first pipe 115, and is located between the pressurization assembly 110 and the first heat exchanger 120. The first valve 135 is installed on the second pipe 130. The second valve 140 is installed in the first pipe 115 and is located between the first outlet 110b and the second pipe 130.

[0058] The cooling system 100 provided in this application can be applied to fire trucks. When used on a fire truck, the first component to be cooled 200 can be the engine, and the cooling system 100 is used to cool the engine. The engine on the fire truck can provide driving power to ensure that the fire truck can quickly reach the fire scene; it can also provide power to fire-fighting equipment to support fire-fighting and rescue operations. For example, the engine drives a fire pump to pressurize water in the water tank or external water source and deliver it to the fire point through water guns or water cannons; another example is that the engine drives the ladder lifting mechanism or drives the spray arm of a high-pressure fire truck to rotate; yet another example is that the engine drives a generator to power emergency lighting, communication equipment (such as walkie-talkies, command systems, etc.), warning lights, etc. on the vehicle.

[0059] When the cooling system 100 provided in this application is applied to an engine, flow channels can be opened in the cylinder block and cylinder head of the engine, and the other end of the first pipe 115 is connected to these flow channels, so that water flows into the flow channels to absorb the heat of components such as the cylinder block and cylinder head, thereby achieving engine cooling.

[0060] It should be noted that the first component to be cooled 200 is not limited to the aforementioned fire truck engine, nor is it limited to applications on fire trucks. The first component to be cooled 200 can also be a hydraulic pump or gearbox of an engineering vehicle (such as an excavator or crane), or an air compressor main unit or generator stator in industrial production. For the sake of clarity in this application, the following description uses a fire truck engine as an example of the first component to be cooled 200.

[0061] When the cooling system 100 is in use, the first inlet 110a of the pressurization component 110 is connected to the first water source 300. The first water source 300 can be an unpressurized water source such as a river, stream, or water stored in a water tank, or it can be a pressurized water source discharged from a fire hydrant, etc. This application does not limit this. The pressurization component 110 draws water from the first water source 300, and under the action of the pressurization component 110, the water flow is pressurized and discharged from the first outlet 110b.

[0062] One end of the first pipe 115 is connected to the first outlet 110b, and the other end is connected to the engine. Water discharged from the first outlet 110b can flow into the first pipe 115 and flow into the engine under the transport of the first pipe 115.

[0063] Since the first heat exchanger 120 is installed on the first pipe 115 and located between the booster assembly 110 and the engine, the water flowing into the first pipe 115 will first flow through the first heat exchanger 120. The first heat exchanger 120 absorbs the heat of the water flow, cooling it down. After being cooled, the water flows into the engine, absorbing the heat generated by the engine and cooling it down. Finally, the water that has absorbed the heat from the engine is discharged outwards.

[0064] One end of the second pipe 130 is connected to the second water source 400, which is a pressurized water source discharged from fire hydrants, etc. The other end of the second pipe 130 is connected to the first pipe 115, so that water in the second water source 400 can enter the first pipe 115 through the second pipe 130 and flow through the first heat exchanger 120 and the engine in sequence.

[0065] The first valve 135 is installed on the second pipe 130 to control the opening and closing of the second pipe 130 and its opening degree, allowing water to flow into or out of the first pipe 115 in a controllable manner. The second valve 140 is installed on the first pipe 115 and is located between the first outlet 110b and the second pipe 130. When the second valve 140 is open, the water discharged from the pressurization assembly 110 can enter the first pipe 115; when the second valve 140 is closed, the water discharged from the pressurization assembly 110 cannot enter the first pipe 115. With the second valve 140 closed and the first valve 135 open, the water in the second water source 400 can flow through the second pipe 130 and the first pipe 115, passing through the first heat exchanger 120 and the engine.

[0066] The cooling system 100 has multiple operating modes:

[0067] Mode 1: Water supply from the primary water source at 300

[0068] like Figure 2As shown, when the first water source 300 is sufficient, the pressurization component 110 operates, the second valve 140 opens, and the first valve 135 closes; the pressurization component 110 draws water from the first water source 300, delivers the water flow to the first heat exchanger 120, and finally delivers it to the engine to achieve engine cooling.

[0069] Mode 2: Second water source 400 water supply

[0070] like Figure 3 As shown, when the booster assembly 110 fails or is damaged due to prolonged operation and cannot start, or when the first water source 300 is insufficient, the second pipe 130 is connected to the second water source 400, the first valve 135 is opened and the second valve 140 is closed; the cooling system 100 draws water from the second water source 400, and the water flows through the first heat exchanger 120 and the engine in sequence under the pressure of the second water source 400 itself, thereby achieving engine cooling.

[0071] In summary, the cooling system 100 of this application cools the engine using water cooling. Compared to air cooling, water cooling has better heat dissipation efficiency, meeting the heat dissipation requirements of high-power fire truck engines and improving engine cooling efficiency. Furthermore, the cooling system 100, through the coordinated design of the pressurization component 110 and the second pipe 130, allows the cooling system 100 to draw water not only from an unpressurized first water source 300 such as rivers or streams, but also from a pressurized second water source 400 such as fire hydrants. This ensures stable operation of the cooling system 100 under various conditions, including insufficient first water source 300, malfunction of the pressurization component 110, or only access to pressurized water sources. This guarantees continuous engine cooling, preventing engine overheating, performance degradation, or shutdown due to cooling interruptions, and adapting to the complex and varied firefighting and rescue scenarios of fire trucks.

[0072] In some embodiments, the cooling system 100 further includes a first check valve 145, which is installed on the first pipe 115 and located between the first outlet 110b and the second valve 140.

[0073] It should be noted that the first check valve 145 is closed along the direction from the second valve 140 to the first outlet 110b. The first check valve 145 only allows water to flow from the booster assembly 110 to the second valve 140.

[0074] With this design, when the cooling system 100 switches from mode one to mode two, the first valve 135 opens and the second valve 140 closes. High-pressure water from pressurized water sources such as fire hydrants will enter the first pipe 115 through the second pipe 130. At this time, the first check valve 145 can block the high-pressure water from impacting the impeller or pump body of the booster assembly 110 in the reverse direction, thus avoiding mechanical damage such as impeller reversal and bearing overload caused by water backflow.

[0075] In some embodiments, the cooling system 100 further includes a pressure relief pipe 147 and a pressure relief valve 150. The pressure relief pipe 147 is connected to the first pipe 115 and is located between the second valve 140 and the first heat exchanger 120. The pressure relief valve 150 is installed on the pressure relief pipe 147.

[0076] The structure of the pressure relief valve 150 varies, as is known to those skilled in the art, and is not limited in this application.

[0077] When the cooling system 100 is in normal operation, if the pipeline pressure between the second valve 140 and the first heat exchanger 120 is less than or equal to a preset safety threshold, the pressure relief valve 150 will remain closed. At this time, the pressure relief pipe 147 does not participate in water circulation; all water flows along the first pipe 115 to the first heat exchanger 120, avoiding a decrease in heat exchange efficiency due to flow diversion and ensuring the cooling needs of the engine or hydraulic pump. When the first pipe 115 experiences abnormally high pressure, the pressure relief valve 150 can automatically open the moment the pressure reaches the threshold. For example, pressure fluctuations in the second water source 400: Some fire hydrants experience a sudden increase in pipeline pressure (such as pump station pressurization), causing the water pressure entering the first pipe 115 to exceed the system's design tolerance; another example is when the system switches from the first water source 300 to the second water source 400, the second valve 140 closes quickly and the first valve 135 opens quickly, easily creating a water hammer effect, causing the pressure peak of the first pipe 115 to exceed the standard for a short period.

[0078] After the pressure relief valve 150 is opened, excess pressure will be released through the pressure relief pipe 147 until the pipeline pressure drops below a preset threshold. The water discharged from the pressure relief pipe 147 can be discharged into a water tank or directly onto the ground, which is not limited in this application. When the pipeline pressure drops to within the safe threshold due to pressure relief, the pressure relief valve 150 can automatically reset and close, cutting off the water flow channel of the pressure relief pipe 147, so that the cooling water flow can be redirected to the first heat exchanger 120 again, avoiding water waste or insufficient cooling flow caused by continuous pressure relief.

[0079] The core of the first heat exchanger 120 (such as a plate-fin or shell-and-tube heat exchanger) is mostly a thin-walled metal structure. If the pipeline pressure continues to exceed the limit, it can easily lead to deformation of the core flow channel, cracking of welds, or even overall crushing. These embodiments can also control the pressure on the first heat exchanger 120 within a safe range by relieving pressure through the pressure relief valve 150, avoiding heat exchange failure due to hardware damage and ensuring the engine's heat dissipation efficiency.

[0080] In some embodiments, the cooling system 100 further includes a filter 155, a pressure gauge 157, a drain pipe 160, and a drain valve 165. The filter 155 is installed on the first pipe 115 and located between the pressure relief pipe 147 and the first heat exchanger 120. The pressure gauge 157 is installed on the first pipe 115 and located between the filter 155 and the first heat exchanger 120. The drain pipe 160 connects to the drain port of the filter 155. The drain valve 165 is installed on the drain pipe 160.

[0081] A filter 155 is installed in the first pipe 115, located between the pressure relief pipe 147 and the first heat exchanger 120, to intercept impurities in the cooling water, such as silt from river water intake, rust, and scale particles in fire hydrant water. A pressure gauge 157 is installed in the first pipe 115, located between the filter 155 and the first heat exchanger 120, to monitor the pipeline pressure from the outlet of the filter 155 to the inlet of the first heat exchanger 120. A drain pipe 160 is connected to the drain port of the filter 155 to discharge the impurities trapped by the filter 155. A drain valve 165 is installed in the drain pipe 160, and its on / off state can be controlled according to the accumulation of impurities in the filter 155.

[0082] Under normal conditions, the drain valve 165 is closed. When cooling water flows through the filter 155, impurities are trapped by the filter element, and the filtered clean water flows to the first heat exchanger 120 through the first pipe 115. When impurities accumulate in the filter 155 due to long-term use, the flow area of ​​the filter element decreases, which will cause the pressure difference between the inlet and outlet of the filter 155 to increase. This is manifested by the pressure value displayed by the pressure gauge 157 being lower than the normal range. At this time, it can be determined that the filter 155 needs to be drained.

[0083] When the filter 155 accumulates impurities due to long-term use, or when maintenance is required during operation intervals, the drain valve 165 can be opened to use the water pressure in the pipeline to discharge the trapped impurities through the drain pipe 160. After the discharge is completed, the drain valve 165 can be closed, and the filter 155 can be restored to the filtration state.

[0084] By setting up the filter 155, impurities are prevented from affecting the long-term heat exchange effect of the first heat exchanger 120, ensuring the stable heat dissipation capability of the cooling system 100 in various scenarios.

[0085] The structures of filter 155 and drain valve 165 are varied and known to those skilled in the art, and are not limited in this application.

[0086] In some embodiments, the pressurization assembly 110 includes a floating pump 111 and a booster pump 112. The floating pump 111 has a first inlet 110a and a second outlet 110d. The booster pump 112 has a second inlet 110c and a first outlet 110b, with the second inlet 110c and the second outlet 110d connected.

[0087] The floating pump 111 has a first inlet 110a and a second outlet 110d, with the first inlet 110a connected to the first water source 300. The floating pump 111 can float on the water surface, with its first inlet 110a submerged, thus adapting to complex water intake environments such as shallow water areas and muddy bottoms, ensuring stable water intake. The booster pump 112 has a second inlet 110c and a first outlet 110b, with the second inlet 110c connected to the second outlet 110d of the floating pump 111, used to receive the water flow delivered by the floating pump 111 and perform secondary pressurization.

[0088] With this design, the floating pump 111, acting as a water intake device, avoids clogging of the inlet by underwater debris through its floating structure, while adapting to water level fluctuations to ensure continuous water intake. The booster pump 112, acting as a pressurization device, increases the low-pressure water flow output by the floating pump 111 to the working pressure required by the cooling system 100, solving the problem of insufficient pressure and ensuring that the water flow can overcome pipeline resistance, heat exchanger pressure drop, and engine flow channel resistance to achieve efficient circulation. The combined use of the floating pump 111 and the booster pump 112 broadens the applicability of the primary water source 300, enabling the cooling system 100 to draw water from both deep and shallow water areas, while also ensuring the pressure stability of the cooling system 100, making it suitable for the cooling needs of fire trucks in complex scenarios such as field rescues.

[0089] In some embodiments, the cooling system 100 is also used to cool a second component 500 to be cooled. The cooling system 100 further includes a third pipe 170, a second heat exchanger 175, and a third valve 180. One end of the third pipe 170 is connected to a first outlet 110b, and the other end is connected to a second inlet 110c. The second heat exchanger 175 is mounted on the third pipe 170. The second component 500 to be cooled is mounted on the third pipe 170 and located between the second heat exchanger 175 and the second inlet 110c. The third valve 180 is mounted on the third pipe 170 and located between the first outlet 110b and the second heat exchanger 175.

[0090] When the cooling system 100 provided in this application is applied to a fire truck, the second component to be cooled 500 can be the hydraulic pump of the fire truck's hydraulic system, and the cooling system 100 is used to cool the hydraulic pump. The hydraulic system on the fire truck transmits pressure energy through hydraulic oil to drive equipment such as ladders and aerial spray booms. When the cooling system 100 provided in this application is applied to a hydraulic pump, a flow channel can be opened on the housing of the hydraulic pump. The liquid in the third pipe 170 of the cooling system 100 flows into the flow channel, is discharged through the flow channel, and then flows back to the booster assembly 110 through the third pipe 170. It should be noted that the second component to be cooled 500 is not limited to the aforementioned fire truck hydraulic pump, and is not limited to applications on fire trucks. The second component to be cooled 500 can also be the hydraulic pump or gearbox of engineering vehicles (such as excavators and cranes), the main unit of an air compressor in industrial production, the stator of a generator, etc. For the convenience of this application, the following description uses the hydraulic pump of a fire truck as an example of the second component to be cooled 500.

[0091] The third valve 180 is installed in the third pipe 170 and located between the first outlet 110b of the booster pump 112 and the second heat exchanger 175, and is used to control the opening and closing of the third pipe 170. When the hydraulic pump needs cooling, the third valve 180 is opened, and part of the high-pressure water output from the first outlet 110b of the booster pump 112 is diverted to the third pipe 170. The water first flows through the second heat exchanger 175 for cooling, and then enters the internal flow channel of the hydraulic pump to absorb the heat generated by its operation. Finally, the water carrying heat flows back to the second inlet 110c of the booster pump 112, mixes with the water delivered by the floating pump 111, and then enters the booster pump 112 for pressurization. If the second component to be cooled 500 does not need cooling, the third valve 180 can be closed.

[0092] With this design, when cooling the hydraulic pump, there is no need to configure an additional independent booster device. Instead, the booster component 110 of the original cooling system 100 can be directly reused as the booster device, which helps to reduce the investment in new pump bodies and other hardware and lower manufacturing costs. At the same time, the water flow discharged into the third pipe 170 eventually flows back to the booster pump 112 for reuse, avoiding water waste caused by direct external discharge and improving water utilization.

[0093] In some embodiments, the cooling system 100 further includes a second check valve 185, which is mounted on the third pipe 170 and located between the first outlet 110b and the third valve 185.

[0094] It should be noted that the second check valve 185 is closed along the direction from the third valve 180 to the first outlet 110b. The second check valve 185 only allows water to flow from the first outlet 110b of the booster pump 112 to the third valve 180.

[0095] When the third valve 180 is open, the water output from the booster pump 112 can flow normally through the second check valve 185 to the second heat exchanger 175 and the second cooling component 500. However, when the third valve 180 is closed or pressure fluctuations occur in the branch circuit (such as a sudden blockage in the flow channel of the second cooling component 500 causing a sudden increase in local pressure), the second check valve 185 can block the reverse water flow from impacting the booster pump 112, avoiding problems such as abnormal impeller stress and unstable outlet pressure caused by backflow of water. At the same time, it can also prevent high-pressure water from impacting the sealing surface of the third valve 180 and causing leakage, thus ensuring the stability of pressure in the pipeline.

[0096] In some embodiments, the second pipe 130 includes a main pipe 131, a first branch pipe 132, and a second branch pipe 133. One end of the main pipe 131 is connected to a second water source 400. One end of the first branch pipe 132 is connected to the other end of the main pipe 131, and the other end of the first branch pipe 132 is connected to a first pipe 115 and located between the booster pump 112 and the first heat exchanger 120. A first valve 135 is installed on the first branch pipe 132. A second valve 140 is located between the first outlet 110b and the first branch pipe 132. One end of the second branch pipe 133 is connected to the other end of the main pipe 131, and the other end of the second branch pipe 133 is connected to a third pipe 170 and located between the third valve 180 and the second heat exchanger 175. The cooling system 100 also includes a third check valve 190, which is installed on the main pipe 131.

[0097] It should be noted that the third check valve 190 is closed along the direction from the second water source 400 to the second branch pipe 133 and the first branch pipe 132. The third check valve 190 only allows water to flow from the second water source 400 to the second branch pipe 133 and the first branch pipe 132.

[0098] The design of the second pipe 130, through the main pipe 131 and the first branch pipe 132 and the second branch pipe 133, allows the second water source 400 to simultaneously supply water to the first branch pipe 132 and the second branch pipe 133 via the main pipe 131. This eliminates the need for a separate additional pressurized water source to be connected to the second cooling component 500, thus meeting the cooling needs of multiple devices such as the fire truck engine and hydraulic pump working together. At the same time, the design of the third check valve 190 on the main pipe 131 can effectively prevent the water in the third pipe 170 from flowing back into the main pipe 131 and leaking from the main pipe 131.

[0099] In some embodiments, the cooling system 100 further includes a fourth valve 195, which is mounted on the main pipe 131 and connected in parallel with the third check valve 190.

[0100] After this design, as Figure 4As shown, when water needs to be supplied by the first water source 300, but the booster pump 112 is not working and the floating pump 111 is working, the second heat exchanger 175, the third valve 180, the second valve 140, and the first valve 135 are closed, and the fourth valve 195 is opened. The water flow sent by the floating pump 111 will pass through the third pipe 170, then through the hydraulic pump and the second heat exchanger 175, and then flow into the second branch pipe 133 and the main pipe 131, and finally be discharged through the main pipe 131, so as to achieve the cooling of the hydraulic pump.

[0101] And with this design, such as Figure 3 As shown, when relying solely on the second water source 400 for water replenishment, the fourth valve 195 can be initially closed, with water flowing in unidirectionally through the third check valve 190. When the booster pump 112 and the second water source 400 supply water simultaneously, and their water pressures tend to be balanced, the fourth valve 195 can be opened. This setting can prevent pressure shocks or damage to the second water source 400 caused by water pressure fluctuations in the booster pump 112.

[0102] In some embodiments, the first valve 135, the second valve 140, the third valve 180, the fourth valve 195, and the drain valve 165 are all pneumatic valves.

[0103] The working principle of the cooling system 100 is described below:

[0104] like Figure 2 As shown, when the first water source 300 supplies water and both the booster pump 112 and the floating pump 111 are working, the third valve 180 and the second valve 140 are open, and the first valve 135 and the fourth valve 195 are closed. After being pressurized by the floating pump 111 and the booster pump 112, the water flows into the third pipe 170 and the first pipe 115 respectively. The water flowing into the third pipe 170 passes through the second heat exchanger 175 and the second cooling component 500 in sequence and then flows back to the booster pump 112, forming a cycle. The water flowing into the first pipe 115 passes through the first heat exchanger 120 and the first cooling component 200 in sequence and then is discharged outward.

[0105] like Figure 3 As shown, when the second water source 400 supplies water, the fourth valve 195 and the second valve 140 are closed, and the first valve 135 and the third valve 180 are opened. The water flows through the main pipe 131 into the second branch pipe 133 and the first branch pipe 132. The water flowing into the second branch pipe 133 flows into the third pipe 170, passes through the second heat exchanger 175 and the second cooling component 500 in sequence, and then enters the booster pump 112. The booster pump 112 sends the water back into the third pipe 170 to form a circulation. The water flowing into the first branch pipe 132 flows into the first pipe 115, passes through the first heat exchanger 120 and the first cooling component 200 in sequence, and then is discharged outward.

[0106] like Figure 4As shown, when the first water source 300 supplies water, the booster pump 112 is not working and the floating pump 111 is working, the second valve 140, the first valve 135 and the third valve 180 are closed, and the fourth valve 195 is opened. The water delivered by the floating pump 111 flows through the third pipe 170, passes through the second cooling component 500 and the second heat exchanger 175 in sequence, and then flows into the second branch pipe 133 and the main pipe 131, and is finally discharged through the main pipe 131.

[0107] Based on the same inventive concept, this application also provides a fire truck that includes the aforementioned cooling system 100. Since the fire truck includes the aforementioned cooling system 100, it naturally possesses all the beneficial effects of the cooling system 100, which will not be elaborated here.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cooling system, characterized in that, The cooling system (100) is used to cool the first component to be cooled (200), and includes: The booster assembly (110) has a first inlet (110a) and a first outlet (110b), wherein the first inlet (110a) is used to communicate with a first water source (300); The first pipe (115) has one end connected to the first water outlet (110b) and the other end connected to the first component to be cooled (200). The first heat exchanger (120) is installed on the first tube (115) and located between the pressurization assembly (110) and the first part to be cooled (200); The second pipe (130) has one end connected to the second water source (400) and the other end connected to the first pipe (115), and is located between the pressurization assembly (110) and the first heat exchanger (120); The first valve (135) is installed on the second pipe (130); The second valve (140) is installed on the first pipe (115) and located between the first outlet (110b) and the second pipe (130).

2. The cooling system according to claim 1, characterized in that, The cooling system (100) also includes: A first check valve (145) is installed on the first pipe (115) and located between the first outlet (110b) and the second valve (140).

3. The cooling system according to claim 1, characterized in that, The cooling system (100) also includes: A pressure relief pipe (147) is connected to the first pipe (115) and located between the second valve (140) and the first heat exchanger (120); A pressure relief valve (150) is installed on the pressure relief pipe (147).

4. The cooling system according to claim 3, characterized in that, The cooling system (100) also includes: A filter (155) is installed on the first pipe (115) and located between the pressure relief pipe (147) and the first heat exchanger (120); A pressure gauge (157) is installed in the first tube (115) and located between the filter (155) and the first heat exchanger (120); A drain pipe (160) is connected to the drain port of the filter (155); A drain valve (165) is installed on the drain pipe (160).

5. The cooling system according to any one of claims 1-4, characterized in that, The booster assembly (110) includes: The floating pump (111) has a first inlet (110a) and a second outlet (110d). The booster pump (112) has a second inlet (110c) and a first outlet (110b), and the second inlet (110c) and the second outlet (110d) are connected.

6. The cooling system according to claim 5, characterized in that, The cooling system (100) is also used to cool a second component (500); the cooling system (100) further includes: The third pipe (170) has one end connected to the first outlet (110b) and the other end connected to the second inlet (110c); The second heat exchanger (175) is installed on the third tube (170); the second part to be cooled (500) is installed on the third tube (170) and located between the second heat exchanger (175) and the second inlet (110c); The third valve (180) is installed on the third pipe (170) and located between the first outlet (110b) and the second heat exchanger (175).

7. The cooling system according to claim 6, characterized in that, The cooling system (100) also includes: The second one-way valve (185) is installed on the third pipe (170) and located between the first outlet (110b) and the third valve (180).

8. The cooling system according to claim 6, characterized in that, The second tube (130) includes: The main pipe (131) is connected at one end to the second water source (400). The first branch pipe (132) has one end connected to the other end of the main pipe (131) and the other end connected to the first pipe (115), and is located between the booster pump (112) and the first heat exchanger (120); the first valve (135) is installed on the first branch pipe (132); the second valve (140) is located between the first outlet (110b) and the first branch pipe (132); The second branch pipe (133) has one end connected to the other end of the main pipe (131) and the other end connected to the third pipe (170), and is located between the third valve (180) and the second heat exchanger (175); The cooling system (100) also includes a third check valve (190) installed on the main pipe (131).

9. The cooling system according to claim 8, characterized in that, The cooling system (100) also includes: The fourth valve (195) is installed on the main pipe (131) and is connected in parallel with the third check valve (190).

10. A fire truck, characterized in that, include: The cooling system (100) according to any one of claims 1-9.

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