Cooling water pressurizing device suitable for plateau

Abstract

The application provides a cooling water pressurizing device suitable for plateau, which comprises a low-pressure water tank, a pressurizing water tank and other cooling water paths of the whole machine. The low-pressure water tank is connected with the pressurizing water tank through a low-pressure water inlet path and a low-pressure water return path, and the other cooling water paths of the whole machine are connected with the pressurizing water tank through a cooling water inlet path and a cooling water return path. The pressurizing water tank is arranged between the low-pressure water tank and the other cooling water paths of the whole machine, the low-pressure water tank and the other cooling water paths of the whole machine are isolated by the pressurizing water tank, the cooling water of the whole machine is not affected by the plateau environment, and therefore a high cooling water pressure is maintained in the pressurizing water tank and the other cooling water paths of the whole machine, the boiling point of the cooling water is maintained at a high value, the problem that the boiling point of the cooling liquid of the diesel engine is reduced due to the decrease of the atmospheric pressure in the plateau environment, the boiling phenomenon is easily caused, and the thermal load of the whole machine is increased is solved, the thermal load of the whole machine in the plateau environment is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of engine technology, and specifically relates to a cooling water booster device suitable for high-altitude environments. Background Technology

[0002] During engine operation, cooling water flows through the combustion system to remove heat and achieve cooling. However, in high-altitude areas, as altitude increases, atmospheric pressure decreases, the final pressure of the intake compression cycle decreases, the ignition delay period increases, and afterburning becomes severe. The heat generated by fuel combustion cannot be converted into useful work in time, resulting in increased exhaust temperature and increased heat load. Simultaneously, with increasing altitude, the boiling point of cooling water decreases, making it prone to overheating, further increasing the heat load of the diesel engine and affecting the overall reliability. Therefore, to ensure the cooling system effectively removes the heat generated during combustion, a more powerful water pump is often used to increase the inlet pressure of the cooling water, thereby reducing the impact of low atmospheric pressure. However, while the water pump can increase the inlet pressure, it cannot increase the overall water pressure of the cooling system. The cooling system remains exposed to the high-altitude atmospheric environment and is still affected by the low boiling point, still facing the threat of increased heat load. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects existing in the prior art and provide a cooling water booster device suitable for high altitudes. It solves the problem that the boiling point of the coolant in the diesel engine is lowered due to the decrease in atmospheric pressure in the high-altitude environment, which easily leads to boiling over and increases the heat load of the whole engine. It reduces the heat load of the whole engine in the high-altitude environment, improves the service life and provides greater room for improvement in the overall performance of the engine.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0005] A cooling water booster device suitable for high-altitude areas is characterized by comprising a low-pressure water tank, a booster water tank, and other cooling water circuits for the entire unit. The low-pressure water tank is connected to the booster water tank via a low-pressure water inlet and a low-pressure water return path, and the other cooling water circuits for the entire unit are connected to the booster water tank via a cooling water inlet and a cooling water return path.

[0006] Furthermore, the low-pressure water tank has a cavity that can be sealed, with an opening connected to the atmosphere, allowing for the addition or reduction of cooling water.

[0007] Furthermore, the other cooling water circuits of the whole machine include water pumps, whole machine water channels and radiators, etc.; the other cooling water circuits of the whole machine form a closed space with the high-pressure water tank through cooling water inlet channel and cooling water return channel.

[0008] Furthermore, the pressurized water tank consists of three parts: a pressurizer, a high-pressure water tank, and a pressure relief device.

[0009] Furthermore, the high-pressure water tank is a cube with a cylindrical top surface and an internal cavity; a cylindrical boss with a vent is located at the center of the cylindrical top surface, which can be sealed; square holes are located at the center of the left and right sides of the high-pressure water tank, which are respectively the high-pressure water vent and the high-pressure water inlet; cylindrical bosses with round holes are located on the front and back sides, which are respectively the cooling water inlet and the cooling water return outlet, the cooling water inlet is connected to the cooling water inlet channel, and the cooling water return outlet is connected to the cooling water return channel.

[0010] Furthermore, the pressure relief device consists of two parts: a pressure relief device housing and two meshing pressure relief gears.

[0011] Furthermore, the pressure relief device housing has an overall cubic structure with an internal cavity; a circular hole is opened in the center of the left side, which is a low-pressure water return hole and connected to the low-pressure water return path; a rectangular boss with a square hole in the center of the right side is a pressure relief water inlet, which is positioned and connected to the high-pressure water outlet.

[0012] Furthermore, the pressure relief gear is installed inside the pressure relief unit housing, and its shaft is fixed by a bearing, which is fixed to the pressure relief unit housing. Its rotation is controlled by a motor outside the housing. The size of the pressure relief gear (including diameter and height) is precisely such that it can rotate within the inner cavity of the pressure relief unit housing. The two pressure relief gears mesh within the inner cavity, and the line connecting the center of the low-pressure water return hole and the centroid of the pressure relief water inlet is one of the center lines of the pressure relief unit housing, tangent to the pitch circle of the meshing two pressure relief gears. This ensures that when the pressure relief gear is stationary, the cooling water on both sides of the gear is isolated from each other; only when the gear rotates can the cooling water from the pressure relief water inlet enter the low-pressure water return path through the gear.

[0013] Furthermore, the booster consists of a booster housing and two meshing booster gears.

[0014] Furthermore, the booster housing has an overall cubic structure with an internal cavity; there is a rectangular boss in the center of the left side with a square hole inside, which is the booster water outlet and is positioned and connected to the high-pressure water inlet; there is a round hole in the center of the right side, which is the low-pressure water inlet and is connected to the low-pressure water inlet.

[0015] Furthermore, the booster gear is installed inside the booster housing, its shaft is fixed by a bearing, and the bearing is fixed to the booster housing. Its rotation is controlled by a motor outside the booster housing. The size of the booster gear (including diameter and height) is precisely such that it can rotate within the inner cavity of the booster housing. The two booster gears mesh within the inner cavity, and the line connecting the center of the low-pressure water inlet and the centroid of the booster water outlet is one of the center lines of the booster housing, tangent to the pitch circle of the meshing two booster gears. This ensures that when the booster gear is stationary, the cooling water on both sides of the booster gear is isolated from each other; only when the booster gear rotates can the cooling water from the low-pressure water inlet pass through the gear into the booster water outlet.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention sets up a booster tank between the low-pressure water tank and other cooling water circuits of the whole machine. By using the booster tank to isolate the low-pressure water tank from other cooling water circuits of the whole machine, the cooling water of the whole machine will not be affected by the high-altitude environment. Thus, a high cooling water pressure is maintained in the high-pressure water tank and other cooling water circuits of the whole machine, thereby maintaining the boiling point of the cooling water at a high value. This device has a simple principle, is easy to adjust, and has strong adaptability. It solves the problem that the boiling point of the coolant in the diesel engine decreases due to the drop in atmospheric pressure in the high-altitude environment, which easily leads to boiling over and increases the heat load of the whole machine. It reduces the heat load of the whole machine in the high-altitude environment, improves the service life, and provides greater room for improvement in the overall performance of the machine. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a cooling water booster device suitable for high-altitude areas according to the present invention;

[0019] Figure 2 This is a perspective view of the booster water tank of a cooling water booster device suitable for high-altitude environments, as described in this invention.

[0020] Figure 3 This is a main sectional view of the booster water tank of a cooling water booster device suitable for high-altitude environments, as described in this invention.

[0021] Figure 4 This is a top sectional view of the booster water tank of a cooling water booster device suitable for high-altitude environments, as described in this invention.

[0022] Figure 5 This is a perspective view of the pressure relief housing of a cooling water booster device suitable for high-altitude environments, as described in this invention.

[0023] Figure 6 This is a top sectional view of the pressure relief casing of a cooling water booster device suitable for high-altitude environments, as described in this invention.

[0024] Figure 7 This is a perspective view of the pressure relief device of a cooling water booster device suitable for high-altitude areas according to the present invention;

[0025] Figure 8 This is a top sectional view of the pressure relief device of a cooling water booster device suitable for high-altitude areas according to the present invention;

[0026] Figure 9 This is a perspective view of the booster of a cooling water booster device suitable for high-altitude environments, as described in this invention.

[0027] Figure 10 This is a top sectional view of the booster of a cooling water booster device suitable for high-altitude environments, as described in this invention.

[0028] Figure 11 This is a perspective view of the high-pressure water tank of a cooling water booster device suitable for high-altitude environments, as described in this invention.

[0029] Figure 12 This is a main sectional view of the high-pressure water tank of a cooling water booster device suitable for high-altitude environments, as described in this invention.

[0030] Figure 13 This is a top sectional view of the high-pressure water tank of a cooling water booster device suitable for high-altitude environments, as described in this invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1-Boosting water tank; 11-High-pressure water tank; 111-High-pressure water inlet; 112-High-pressure water vent; 113-Cooling water inlet; 114-Cooling water return outlet; 115-Vent outlet; 12-Pressure relief device; 121-Pressure relief gear; 122-Pressure relief device housing; 1221-Pressure relief water inlet; 1222-Low-pressure water return hole; 13-Booster; 131-Booster gear; 132-Booster housing; 1321-Low-pressure water inlet; 1322-Booster water outlet; 2-Low-pressure water tank; 21-Low-pressure water inlet; 22-Low-pressure water return; 3-Other cooling water circuits of the whole machine; 31-Cooling water inlet channel; 32-Cooling water return channel. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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 the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0037] like Figure 1 As shown, a cooling water pressurization device suitable for high-altitude areas is characterized by comprising a low-pressure water tank 2, a pressurization water tank 1, and other cooling water circuits 3 for the entire machine. The low-pressure water tank 2 is connected to the pressurization water tank 1 via a low-pressure water inlet passage 21 and a low-pressure water return passage 22. The other cooling water circuits 3 are connected to the pressurization water tank 1 via a cooling water inlet passage 31 and a cooling water return passage 32. The low-pressure water tank 2 has a sealed cavity with an opening open to the atmosphere, allowing for adjustments in cooling water levels. The other cooling water circuits 3 include a water pump, water channels, and radiators. In the original cooling system, the low-pressure water tank 2, which allows for adjustments in cooling water levels, is directly connected to the other cooling water circuits 3. Although the water pump pressurizes the cooling water, the entire cooling system remains exposed to the low atmospheric pressure of the high-altitude region and is still susceptible to the effects of low boiling points, thus increasing the overall thermal load on the machine. The cooling water pressurization device described in this article has a pressurization tank 1 installed between the low-pressure water tank and other cooling water circuits of the whole machine. The pressurization tank 1 isolates the connection between the low-pressure water tank and other cooling water circuits of the whole machine, so that the cooling system is not exposed to the low air pressure of the plateau. This allows the cooling system to bear a greater heat load at the high boiling point of the pressurized cooling water, thereby alleviating the serious heat load problem of the engine at high altitude.

[0038] like Figure 2 , Figure 3 and Figure 4 As shown, the booster tank 1 consists of three parts: a booster 13, a high-pressure tank 11, and a pressure relief device 12. The booster 13 and pressure relief device 12 have the same overall structure: the pressure relief device 12 consists of a pressure relief housing 122 and two meshing pressure relief gears 121; the booster 13 consists of a booster housing 132 and two meshing booster gears 131.

[0039] like Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the pressure relief housing 122 has a cubic structure with an internal cavity. A circular hole is opened at the center of the left side, which is a low-pressure water return hole 1222 and is connected to the low-pressure water return passage 22. A rectangular boss with a square hole is located at the center of the right side, which is a pressure relief water inlet 1221 and is positioned and connected to the high-pressure water outlet 112. The pressure relief gear 121 is installed inside the pressure relief housing 122, and its shaft is fixed by a bearing. The bearing is fixed on the pressure relief housing 122 and rotates outside the pressure relief housing by a motor. The size of the pressure relief gear 121 (including diameter and height) is just right to rotate in the inner cavity of the pressure relief housing 122. The two pressure relief gears 121 mesh in the inner cavity. The line connecting the center of the low-pressure water return hole 1222 and the centroid of the pressure relief water inlet 1221 is one of the center lines of the pressure relief housing 122 and is tangent to the pitch circle of the meshing of the two pressure relief gears. This ensures that when the pressure relief gear is stationary, the cooling water on both sides of the pressure relief gear is isolated from each other; only when the pressure relief gear rotates can the cooling water from the pressure relief water inlet 1221 enter the low-pressure water return path 22 through the gear.

[0040] like Figure 9 and Figure 10 As shown, the booster and the pressure relief device have the same overall structural features, only exhibiting chiral symmetry. The booster housing 132 is generally cubic in structure with an internal cavity; a rectangular boss with a square hole at the center of the left side serves as the booster water outlet 1322, which is positioned and connected to the high-pressure water inlet; a circular hole at the center of the right side serves as the low-pressure water inlet 1321, which is connected to the low-pressure water inlet path; the booster gear 131 is installed inside the booster housing 132, and its shaft is fixed by a bearing, which is fixed to the booster housing 132 and rotated by a motor outside the booster housing; the size of the booster gear 131 (including diameter and height) is just right to rotate within the internal cavity of the booster housing 132; the two booster gears 131 mesh within the internal cavity, and the line connecting the center of the low-pressure water inlet 1321 and the centroid of the booster water outlet 1322 is one of the center lines of the booster housing 132, tangent to the pitch circle of the meshing of the two booster gears 131. This ensures that when the booster gear is stationary, the cooling water on both sides of the booster gear is isolated from each other; only when the booster gear rotates can the cooling water in the low-pressure water inlet pass through the gear and enter the booster water outlet.

[0041] The structure of the booster and pressure relief device ensures that the other cooling water circuits of the whole machine can form a closed space with the high-pressure water tank through the cooling water inlet and return channels. At the same time, by adjusting the rotation speed of the booster gear and pressure relief gear, the amount of water flowing from the low-pressure water tank into the high-pressure water tank and from the high-pressure water tank back to the low-pressure water tank can be adjusted, thereby adjusting the overall pressure of the cooling water in the high-pressure water tank and other cooling water circuits of the whole machine, and thus adjusting the boiling point of the cooling water.

[0042] like Figure 11 , Figure 12 and Figure 13As shown, the high-pressure water tank 11 is a cube with a cylindrical top surface and an internal cavity. Square holes are located at the center of the left and right sides of the high-pressure water tank, serving as a high-pressure water vent 112 and a high-pressure water inlet 111, respectively. Cylindrical bosses are located on the front and rear sides, each with a circular hole, serving as a cooling water inlet 113 and a cooling water return outlet 114, respectively. The cooling water inlet 113 connects to the cooling water inlet channel 31, and the cooling water return outlet 114 connects to the cooling water return channel 32. A cylindrical boss with a vent 115 is located at the center of the cylindrical top surface of the high-pressure water tank 11, which can be sealed. Designing the top surface of the high-pressure water tank 11 as a cylinder allows air entering from the low-pressure water tank 2 and other cooling water circuits 3 of the entire machine to be concentrated and released into the atmosphere through the vent 115, preventing excessive air from affecting the cooling system performance.

[0043] The installation method and functional implementation process of a cooling water booster device suitable for high-altitude areas according to the present invention are as follows:

[0044] First, install the booster gear and the pressure relief gear into the booster housing and the pressure relief housing respectively to complete the installation of the booster and the pressure relief unit;

[0045] Position and install the pressure relief water inlet of the pressure relief device into the high-pressure water outlet of the high-pressure water tank, and position and install the booster water outlet of the booster into the high-pressure water inlet of the high-pressure water tank to complete the installation of the booster water tank.

[0046] Finally, connect the low-pressure water tank and the low-pressure water inlet of the booster with the low-pressure water inlet circuit, connect the low-pressure water tank and the low-pressure water return hole of the pressure relief device with the low-pressure water return circuit, connect the cooling water inlet of the high-pressure water tank and the other cooling water circuits of the whole machine with the cooling water inlet circuit, and connect the cooling water return port of the high-pressure water tank and the other cooling water circuits of the whole machine with the cooling water return circuit. This completes the installation of this type of cooling water booster device suitable for high altitudes.

[0047] The booster and pressure relief gear isolate the cooling water flow between the low-pressure and high-pressure water tanks. Cooling water can only enter the high-pressure water tank from the low-pressure tank via the low-pressure water inlet, booster gear, booster water outlet, and high-pressure water inlet. Cooling water then flows back to the low-pressure tank via the high-pressure water outlet, pressure relief water inlet, pressure relief gear, low-pressure water return hole, and low-pressure water return path. By adjusting the speed of the booster and pressure relief gears, the flow rate of water from the low-pressure tank to the high-pressure tank and back can be adjusted, thus achieving water pressure accumulation in the high-pressure tank.

[0048] Through the action of water pumps in other cooling water circuits of the entire machine, high-pressure cooling water from the high-pressure water tank enters the entire machine through the cooling water inlet and cooling water inlet channel to perform a cooling function, and flows back to the high-pressure water tank through the cooling water return channel and cooling water return outlet. The high-pressure water tank and other cooling water circuits of the entire machine are isolated from the atmosphere by the booster and pressure relief device, maintaining a higher boiling point to ensure cooling effect. If air accumulates in the high-pressure water tank, it can be discharged through the vent on the cylindrical top surface.

[0049] This concludes the description of the functional implementation process of this cooling water pressurization device suitable for high-altitude areas.

[0050] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A cooling water booster device suitable for high-altitude areas, characterized in that, It includes a low-pressure water tank (2), a booster water tank (1), and other cooling water circuits (3) of the whole machine; the low-pressure water tank is connected to the booster water tank through a low-pressure water inlet circuit and a low-pressure water return circuit, and the other cooling water circuits of the whole machine are connected to the booster water tank through a cooling water inlet circuit and a cooling water return circuit. The pressurized water tank consists of a high-pressure water tank (11) and a pressure booster (13) and a pressure relief device (12) located on both sides of the high-pressure water tank (11). The high-pressure water tank has a structure with an arc-shaped top surface and an internal cavity. There is a cylindrical boss at the center of the arc-shaped top surface, which has an air vent. There are square holes at the center of the left and right sides of the high-pressure water tank, which are the high-pressure water vent and the high-pressure water inlet, respectively. There are cylindrical bosses on the front and back sides, which have round holes, which are the cooling water inlet and the cooling water return outlet, respectively. The cooling water inlet is connected to the cooling water inlet channel, and the cooling water return outlet is connected to the cooling water outlet channel. The water return channel is connected; the booster consists of a booster housing and two meshing booster gears; the booster gears are installed inside the booster housing, and the size of the booster gears is just enough to rotate in the inner cavity of the booster housing; the two booster gears mesh in the inner cavity, and the line connecting the center of the low-pressure water inlet and the centroid of the booster water outlet is one of the center lines of the booster housing, which is tangent to the pitch circle of the meshing of the two booster gears. When the booster gears are stationary, the cooling water on both sides of the booster gears is isolated from each other; only when the booster gears rotate can the cooling water in the low-pressure water inlet enter the booster water outlet through the gears.

2. The cooling water pressurization device suitable for high-altitude areas according to claim 1, characterized in that: The low-pressure water tank has a cavity that can be sealed, with its opening connected to the atmosphere.

3. The cooling water booster device suitable for high-altitude areas according to claim 1, characterized in that: The other cooling water circuits of the whole machine include water pumps, whole machine water channels and radiators; the other cooling water circuits of the whole machine form a closed space with the high pressure tank of the booster water tank through the cooling water inlet channel and the cooling water return channel.

4. A cooling water booster device suitable for high-altitude areas according to claim 1, characterized in that: The pressure relief device consists of a pressure relief device housing and two meshing pressure relief gears disposed inside the pressure relief device housing.

5. A cooling water pressurization device suitable for high-altitude areas according to claim 4, characterized in that: The pressure relief device housing has an internal cavity; a round hole is opened in the center of the left side, which is a low-pressure water return hole and connected to the low-pressure water return path; a rectangular boss with a square hole in the center of the right side is a pressure relief water inlet and is positioned and connected to the high-pressure water outlet.

6. A cooling water booster device suitable for high-altitude areas according to claim 4, characterized in that: The pressure relief gears are mounted inside the pressure relief unit housing via bearings and are controlled to rotate by a motor. The two pressure relief gears mesh in the inner cavity. The line connecting the center of the low-pressure water return hole and the centroid of the pressure relief water inlet is one of the center lines of the pressure relief unit housing and is tangent to the pitch circle of the meshing of the two pressure relief gears. When the pressure relief gears are stationary, the cooling water on both sides of the pressure relief gears is isolated from each other. Only when the pressure relief gears rotate can the cooling water from the pressure relief water inlet enter the low-pressure water return path through the gears.

7. A cooling water booster device suitable for high-altitude areas according to claim 1, characterized in that: The booster housing is generally cubic in shape with an internal cavity; there is a rectangular boss in the center of the left side with a square hole inside, which is the booster water outlet and is positioned and connected to the high-pressure water inlet; there is a round hole in the center of the right side, which is the low-pressure water inlet and is connected to the low-pressure water inlet.

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