Water pump assembly and cooling system

Abstract

The application discloses a water pump assembly and a cooling system, and belongs to the technical field of cooling equipment. The water pump assembly comprises a water pump, a water inlet pipe in communication with a water inlet of the water pump, and an exhaust mechanism installed on the water inlet pipe and close to the water inlet, and the exhaust mechanism is used for collecting and discharging the gas in the water inlet pipe. According to the water pump assembly, the exhaust mechanism is arranged at the position close to the water inlet of the water pump on the water inlet pipe, the gas is collected and discharged, the cavitation of the gas in the water pump is reduced, and the damage of the water pump is avoided.

Description

Technical Field

[0001] This application belongs to the field of cooling equipment technology, and in particular relates to a water pump assembly and a cooling system. Background Technology

[0002] Currently, integrated chiller systems are increasingly favored by customers due to their simple and convenient installation. The integrated unit mainly integrates the air conditioning unit with the water pump and cooling tower, which reduces the head of the cooling water pump and the friction loss of the chiller system. When selecting a water pump, the head can be reduced, and the power consumption of the cooling water pump can be reduced, making the entire integrated computer room more energy-efficient.

[0003] However, because the design of chiller systems often includes a certain margin, the selection of cooling water pumps may be too large or the head may be too large, resulting in a large inlet flow rate of the cooling water pump. This can easily cause cavitation in the pump, which can lead to abnormal noise or even damage to the pump impeller. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a water pump assembly and cooling system that collects and discharges gas, reducing cavitation of gas within the pump body.

[0005] In a first aspect, this application provides a water pump assembly, including: a water pump; an inlet pipe connected to the inlet of the water pump; and an exhaust mechanism installed on the inlet pipe and close to the inlet, the exhaust mechanism being used to collect and discharge gas inside the inlet pipe.

[0006] According to the water pump assembly of this application, by setting an exhaust mechanism near the water pump inlet on the inlet pipe, the gas is collected and discharged, reducing cavitation of gas in the water pump and avoiding damage to the water pump.

[0007] According to one embodiment of this application, the exhaust mechanism includes: an air storage bag formed above the water inlet pipe and having an air storage chamber, the air storage chamber being connected to the water inlet pipe; and an exhaust valve installed on the air storage bag and connected to the air storage chamber.

[0008] According to one embodiment of this application, the exhaust mechanism further includes: a first baffle, installed on the upper side inside the water inlet pipe and located in front of the air storage bag along the water inlet direction, and the first baffle is provided with a plurality of first through holes.

[0009] According to one embodiment of this application, the exhaust mechanism further includes: a second baffle, installed on the upper side inside the water inlet pipe and located on the rear side of the air storage bag along the water inlet direction, and the second baffle is provided with a plurality of second through holes.

[0010] According to one embodiment of this application, the first through hole and the second through hole are arranged offset in the water inlet direction.

[0011] According to one embodiment of this application, the water pump assembly further includes: a first connecting pipe installed between the water inlet pipe and the water inlet of the water pump, the first connecting pipe having a first transition section with a gradually decreasing diameter along the water inlet direction, the first transition section being connected to the water inlet of the water pump.

[0012] According to one embodiment of this application, the diameter of the inlet pipe is larger than the diameter of the inlet, and the diameter of the first connecting pipe on the side connected to the inlet pipe is larger than the diameter of the side connected to the outlet.

[0013] According to one embodiment of this application, the water pump assembly further includes: an outlet pipe; and a second connecting pipe installed between the outlet pipe and the outlet of the water pump, wherein the second connecting pipe has a second transition section with a gradually increasing diameter along the outlet direction, and the second transition section is connected to the outlet of the water pump.

[0014] Secondly, this application provides a cooling system including a water pump assembly according to any of the above embodiments.

[0015] According to the cooling system of this application, by setting an exhaust mechanism near the water pump inlet on the water inlet pipe, the gas is collected and discharged, reducing cavitation in the water pump and preventing damage to the water pump.

[0016] According to one embodiment of this application, the cooling system further includes a cooling tower and a condenser, the cooling tower being connected to the input end of the water pump assembly, and the condenser being connected to the output end of the water pump assembly.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is one of the structural schematic diagrams of the water pump assembly provided in the embodiments of this application;

[0020] Figure 2 This is a second schematic diagram of the structure of the water pump assembly provided in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the first baffle provided in an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the structure of the second baffle provided in an embodiment of this application.

[0023] Figure label:

[0024] Water pump 100, inlet 110, outlet 120;

[0025] 200mm water inlet pipe;

[0026] Exhaust mechanism 300, air storage bag 310, air storage chamber 311, exhaust valve 320, first baffle 330, first through hole 331, second baffle 340, second through hole 341;

[0027] First connecting pipe 400, water outlet pipe 500, second connecting pipe 600. Detailed Implementation

[0028] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0029] Reference Figure 1 One embodiment of this application provides a water pump assembly.

[0030] In this embodiment, the water pump assembly includes a water pump 100, an inlet pipe 200, and an exhaust mechanism 300. The inlet pipe 200 is connected to the inlet 110 of the water pump 100. The exhaust mechanism 300 is installed on the inlet pipe 200 and is close to the inlet 110. The exhaust mechanism 300 is used to collect and exhaust the gas in the inlet pipe 200.

[0031] In this embodiment, the water pump assembly can be applied to an integrated chiller system to draw cooling water from the cooling equipment and output the cooling water to the condenser. The cooling equipment can be a water pump cooling tower, etc., and the water pump 100 is a cooling water pump. The specific structure and principle of the water pump cooling tower and cooling water pump are well-established technologies and will not be elaborated upon in this embodiment. Of course, the water pump cooling tower and water pump 100 can also be other types of water pumps, and this embodiment does not impose any limitations on this.

[0032] In some embodiments, one end of the inlet pipe 200 may be connected to a cooling tower, and the other end of the inlet pipe 200 may be connected to the inlet 110 of the water pump 100. Cooling water flows from the water pump cooling tower into the inlet pipe 200, and then from the inlet pipe 200 into the water pump 100.

[0033] It should be noted that selecting a cooling water pump that is too large or has an excessively high head will result in an excessively large flow rate. A large inlet flow rate leads to a low inlet water pressure. Because the cooling water temperature is low, it is prone to vaporization under low pressure, causing cavitation.

[0034] In this embodiment, the venting mechanism 300 is used to collect gas in the cooling water flowing within the inlet pipe 200. After the cooling water flows into the venting mechanism 300, the gas is trapped, while part of the water flows into the inlet 110. The venting mechanism 300 can periodically discharge the collected gas, thereby freeing up space for continued gas collection. Since there is no gas in the cooling water flowing into the water pump 100, cavitation of the water pump 100 can be avoided.

[0035] According to the water pump assembly of this application, by setting an exhaust mechanism 300 at the position of the water inlet 110 of the water inlet pipe 200 near the water inlet of the water pump 100, the gas is collected and discharged, reducing the cavitation of gas in the water pump 100 and avoiding damage to the water pump 100.

[0036] Reference Figure 2 In one embodiment of this application, the exhaust mechanism 300 includes an air storage bag 310 and an exhaust valve 320. The air storage bag 310 is formed above the water inlet pipe 200 and has an air storage chamber 311, which is connected to the water inlet pipe 200. The exhaust valve 320 is installed on the air storage bag 310 and is connected to the air storage chamber 311.

[0037] It is understandable that the gas generated by the cooling water in the inlet pipe 200 under low pressure generally flows above the inlet pipe 200. Therefore, by placing the gas reservoir 310 above the inlet pipe 200, the gas can flow upward and enter the gas reservoir 310 when the cooling water flows below it.

[0038] In some embodiments, an opening may be provided above the water inlet pipe 200, and the air storage chamber 311 communicates with the water inlet pipe 200 through the opening. The water inlet pipe 200 and the air storage chamber 310 may be integrally formed, or the air storage chamber 310 may be fixed to the water inlet pipe 200 by welding or other means.

[0039] In some embodiments, a diaphragm may be provided at the opening above the water inlet pipe 200. The diaphragm separates the water inlet pipe 200 from the air storage tank 310, and is configured to allow gas to pass through while preventing water from passing through. When cooling water flows below the diaphragm, the water continues to flow along the water inlet pipe 200, while the gas enters the air storage tank 310 through the diaphragm.

[0040] In this embodiment, the exhaust valve 320 is positioned above the gas reservoir 310 and at the highest point of the gas storage chamber 311. The exhaust valve 320 can collect the gas inside the gas reservoir 310. When gas enters the valve chamber of the exhaust valve 320 and accumulates at the upper part of the exhaust valve 320, the pressure rises as the amount of gas inside the valve increases. When the gas pressure exceeds a certain level, the exhaust valve 320 opens its exhaust port; after the gas is discharged, the pressure drops, and the exhaust port closes.

[0041] It is understandable that when negative pressure is generated in the air storage tank 310, the exhaust valve 320 opens the exhaust port. Since the external atmospheric pressure is greater than the pressure in the air storage chamber 311 at this time, the atmosphere will enter the air storage chamber 311 through the exhaust port to prevent the harm of negative pressure.

[0042] In one embodiment of this application, the exhaust mechanism 300 further includes a first baffle 330, which is installed on the upper side inside the water inlet pipe 200 and located in front of the air storage bag 310 along the water inlet direction. The first baffle 330 is provided with a plurality of first through holes 331.

[0043] It should be noted that the fluid in the inlet pipe 200 first passes through the first baffle 330, and then flows below the air storage tank 310. The first baffle 300 blocks the fluid above the inlet pipe 200, and some water flows downwards below the first baffle 330. Since the gas is retained in the inlet pipe 200, the gas mainly flows through the through hole of the first baffle 330, thus accumulating below the air storage tank 310, and then flowing into the air storage tank 310.

[0044] In this embodiment, a diaphragm may not be provided at the opening above the water inlet pipe 200, meaning that the air storage tank 310 can contain a mixture of gas and water. Since the air storage tank 310 is located above the water inlet pipe 200, the air storage chamber 311 mainly contains gas. After the gas accumulates to a certain amount, it is discharged through the exhaust valve 320.

[0045] Reference Figure 3 As an example, the upper edge of the first baffle 300 is arc-shaped, and its upper edge abuts against the inner wall of the water inlet pipe 200; the lower edge of the first baffle 300 is a horizontal straight line. The first through holes 331 can be circular and evenly arranged on the first baffle 300. Of course, the first through holes 331 can also be square, etc., and the first through holes 331 can also be arranged irregularly on the first baffle 300. This embodiment does not limit this.

[0046] In one embodiment of this application, the exhaust mechanism further includes a second baffle 340, which is installed on the upper side of the water inlet pipe 200 and located on the rear side of the air storage bag 310 along the water inlet direction. The second baffle 340 is provided with a plurality of second through holes 341.

[0047] It should be noted that the fluid in the inlet pipe 200 first passes through the first baffle 330, and then flows below the air storage tank 310. If there is still a small amount of gas escaping, it will return to the air storage tank 310 after being impacted by the second baffle 340, thus preventing the gas from entering the water inlet 110 of the water pump 100.

[0048] Reference Figure 4As an example, the upper edge of the second baffle 340 is arc-shaped, and its upper edge abuts against the inner wall of the water inlet pipe 200; the lower edge of the second baffle 340 is a horizontal straight line. The second through holes 341 can be circular and evenly arranged on the second baffle 340. Of course, the second through holes 341 can also be square, etc., and the second through holes 341 can also be arranged irregularly on the second baffle 340. This embodiment does not limit this.

[0049] In one embodiment of this application, the first through hole 331 and the second through hole 341 are arranged offset in the water inlet direction.

[0050] It is understandable that, since the first through hole 331 and the second through hole 341 are staggered, if the fluid flows towards the second baffle 340 in its original direction after passing through the first through hole 331, it will be blocked by the solid part of the second baffle 340, which can improve the gas collection effect.

[0051] In this embodiment, when the fluid in the inlet pipe 200 passes through the first baffle 300 and the second baffle 340, the fluid velocity and kinetic energy increase due to the compression of the two baffles. This reduces the pressure above the fluid in the portion between the first baffle 300 and the second baffle 340, forming a vacuum zone, thereby introducing gas into the gas storage bag 310.

[0052] In one embodiment of this application, the water pump assembly further includes a first connecting pipe 400, which is installed between the water inlet pipe 200 and the water inlet 110 of the water pump 100. The first connecting pipe 400 has a first transition section with a gradually decreasing diameter along the water inlet direction, and the first transition section is connected to the water inlet 110 of the water pump 100.

[0053] Understandably, the front end of the inlet 110 of the water pump 100 has an enlarged pipe diameter section, which can reduce the kinetic energy of the cooling water entering the water pump 100, increase the static pressure of the cooling water, and thus cause the cooling water to vaporize and generate gas.

[0054] In some embodiments, the two ends of the first connecting pipe 400 may have the same diameter, while the diameter of the middle section of the first connecting pipe 400 is larger than that of the two ends. The cooling kinetic energy in the middle section of the first connecting pipe 400 is lower, making it less prone to vaporization.

[0055] In one embodiment of this application, the diameter of the inlet pipe 200 is larger than the diameter of the inlet 110, and the diameter of the first connecting pipe 400 on the side connected to the inlet pipe 200 is larger than the diameter of the side connected to the outlet 110.

[0056] In this embodiment, the diameter of the first connecting pipe 400 gradually decreases in the water inlet direction. The side with the smaller diameter is connected to the water inlet 110 of the water pump 100, and the side with the larger diameter is connected to the water inlet pipe 200. The diameter of the water inlet pipe 200 remains constant along the axial direction and is larger than the diameter of the water inlet 110. The front end of the water inlet 110 of the water pump 100 is a larger diameter section, which helps to increase the static pressure of the cooling water, thereby promoting the vaporization of the cooling water to generate gas.

[0057] In some embodiments, the radial profile of the transition section can be a straight line, an arc, or a wavy line, etc.

[0058] In one embodiment of this application, the water pump assembly further includes an outlet pipe 500 and a second connecting pipe 600. The second connecting pipe 600 is installed between the outlet pipe 500 and the outlet 120 of the water pump 100. The second connecting pipe 600 has a second transition section with a gradually increasing diameter along the water outlet direction. The second transition section is connected to the outlet 120 of the water pump 100.

[0059] Understandably, the rear end of the outlet 120 of the water pump 100 has an enlarged pipe diameter section, which can reduce the kinetic energy of the cooling water in the entire system, increase the static pressure of the cooling water, and thus generate gas through the vaporization of the cooling water.

[0060] In some embodiments, the two ends of the second connecting pipe 600 may have the same diameter, while the diameter of the middle section of the second connecting pipe 600 is larger than that of the two ends. The cooling kinetic energy in the middle section of the second connecting pipe 600 is lower, making it less prone to vaporization.

[0061] In other embodiments, the diameter of the second connecting pipe 600 gradually increases in the water outlet direction. The side with the smaller diameter connects to the outlet 120 of the water pump 100, and the side with the larger diameter connects to the outlet pipe 500. The outlet pipe 500 has a constant axial diameter, which is larger than the diameter of the outlet 120. The rear end of the outlet 120 of the water pump 100 has an enlarged diameter, which helps to increase the static pressure of the cooling water, thereby promoting the vaporization of the cooling water and generating gas.

[0062] In some embodiments, the outlet of the water inlet pipe 200 is further provided with an exhaust mechanism 300. The outlet of the water inlet pipe 200 is connected to the end of the first connecting pipe 400 with a larger diameter. The end of the first connecting pipe 400 with a smaller diameter is connected to the inlet 110 of the water pump 100. The outlet 120 of the water pump 100 is connected to the end of the second connecting pipe 600 with a smaller diameter. The second connecting pipe 600 is connected to the outlet pipe 500 with a larger diameter.

[0063] According to the water pump assembly of this embodiment, before the cooling water enters the water pump, the kinetic energy of the cooling water is reduced by the first connecting pipe 400, and the static pressure of the water before entering the water pump 100 is increased to prevent the cooling water from vaporizing before entering the pump 100. Even if vaporization occurs, the gas is collected and discharged by the exhaust mechanism 300 to reduce cavitation caused by gas in the pump body, which could damage the water pump 100. Through multiple designs to prevent gas cavitation on the water pump 100, the generation of noise and the occurrence of cavitation in the water pump 100 are avoided, laying the foundation for the long-term reliable operation of the water pump 100, extending the service life of the water pump 100, and reducing the later maintenance cost of the water pump 100.

[0064] One embodiment of this application also provides a cooling system including a water pump assembly according to any of the above embodiments. The specific structure of the water pump assembly can be referred to in the above embodiments, and will not be repeated here.

[0065] According to the cooling system of this application, an exhaust mechanism 300 is installed at the position of the water inlet 110 of the water pump 100 near the water inlet pipe 200 to collect and discharge the gas, thereby reducing cavitation of the gas in the water pump 100 and preventing damage to the water pump 100. Of course, the cooling system can also adopt the technical solutions in the above embodiments, which also have corresponding technical effects, and will not be described in detail here.

[0066] In one embodiment of this application, the cooling system further includes a cooling tower and a condenser, the cooling tower being connected to the input end of the water pump assembly and the condenser being connected to the output end of the water pump assembly.

[0067] In this embodiment, the output end of the cooling tower is connected to the inlet of the inlet pipe 200 in the water pump assembly. The outlet of the inlet pipe 200 is connected to the end of the first connecting pipe 400 with a larger diameter. The end of the first connecting pipe 400 with a smaller diameter is connected to the inlet 110 of the water pump 100. The outlet 120 of the water pump 100 is connected to the end of the second connecting pipe 600 with a smaller diameter. The second connecting pipe 600 is connected to the outlet pipe 500 with a larger diameter. The outlet pipe 500 is connected to the condenser. The structure and principle of the cooling tower and condenser are based on mature technologies and will not be described in detail here.

[0068] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0069] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0070] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0071] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0073] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A water pump assembly, characterized in that, include: Water pump; The water inlet pipe is connected to the water inlet of the water pump; An exhaust mechanism is installed on the water inlet pipe and near the water inlet. The exhaust mechanism is used to collect and discharge the gas in the water inlet pipe. An air reservoir is formed above the water inlet pipe. The exhaust mechanism also includes: The first baffle is installed on the upper side inside the water inlet pipe and is located in front of the air storage bag along the water inlet direction. The first baffle is provided with a plurality of first through holes. The exhaust mechanism also includes: The second baffle is installed on the upper side inside the water inlet pipe and is located on the rear side of the air storage bag along the water inlet direction. The second baffle is provided with multiple second through holes. The first through hole and the second through hole are arranged in a staggered manner in the water inlet direction; When the fluid in the inlet pipe passes through the first and second baffles, the compression of the two baffles increases the fluid velocity and kinetic energy in the section between the first and second baffles, thereby reducing the pressure above the fluid in the section between the first and second baffles and forming a vacuum zone, which introduces gas into the gas storage bag.

2. The water pump assembly according to claim 1, characterized in that, The exhaust mechanism includes: The air storage bag has an air storage cavity, which is connected to the water inlet pipe; An exhaust valve is installed in the air storage bag and is connected to the air storage chamber.

3. The water pump assembly according to any one of claims 1-2, characterized in that, The pump assembly also includes: A first connecting pipe is installed between the water inlet pipe and the water inlet of the water pump. The first connecting pipe has a first transition section with a gradually decreasing diameter along the water inlet direction. The first transition section is connected to the water inlet of the water pump.

4. The water pump assembly according to claim 3, characterized in that, The diameter of the inlet pipe is larger than the diameter of the inlet, and the diameter of the first connecting pipe on the side connected to the inlet pipe is larger than the diameter of the first connecting pipe on the side connected to the outlet.

5. The water pump assembly according to claim 3, characterized in that, The pump assembly also includes: Water outlet pipe; The second connecting pipe is installed between the water outlet pipe and the water outlet of the water pump. The second connecting pipe has a second transition section with a gradually increasing diameter along the water outlet direction. The second transition section is connected to the water outlet of the water pump.

6. A cooling system, characterized in that, Includes the water pump assembly according to any one of claims 1-5.

7. The cooling system according to claim 6, characterized in that, The cooling system also includes a cooling tower and a condenser, the cooling tower being connected to the input end of the water pump assembly and the condenser being connected to the output end of the water pump assembly.

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