Compact hermetic water cooled compressor cooling system

Abstract

The utility model provides a kind of compact shell-and-tube water-cooled compressor cooling system, including rear cooler, gas-water separator and at least two series connection oil cooler, all oil cooler is arranged along vertical stacking, and the projection of the oil cooler, the rear cooler and the gas-water separator on horizontal plane is arranged along same straight line. By the structure that the traditional single and bulky oil cooler is improved into multiple small oil coolers in series, the heat exchange requirement of whole machine can be accurately met. Moreover, the diameter of the improved oil cooler is greatly reduced, and the length is shortened, the rear cooler, the oil cooler and the gas-water separator can be installed along the same straight line, effectively reducing the occupied space of the cooling system, thereby reserving sufficient space for the installation of core components such as compressor host, motor and oil gas bucket, thereby reducing the overall size of the air compressor, and more suitable for compact working conditions such as marine.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a cooling system for a compact shell-and-tube water-cooled compressor. Background Technology

[0002] In the field of marine compressors, space constraints are one of the core design challenges. Due to the standard size of containers and the compact layout of ship cabins, the external dimensions of compressors need to be as streamlined as possible to fit the limited installation space.

[0003] However, in traditional compressor cooling systems, the cooler and its associated piping often occupy a significant amount of internal space, becoming a key bottleneck restricting the miniaturization of the equipment. Therefore, optimizing the structure and compressing the space of the cooling system is a necessary path to achieve overall size reduction of marine compressors.

[0004] For example, in existing shell-and-tube water-cooled compressors, 76%-78% of the energy is lost as waste heat during operation, with lubricating oil cooling bearing the main heat load. Oil has a low specific heat capacity, requiring a larger heat exchange area to maintain stable oil temperature, resulting in a significant increase in the size of the oil cooler, which occupies a large space and is difficult to adapt to space-constrained applications such as ships. Utility Model Content

[0005] The purpose of this invention is to provide a compact shell-and-tube water-cooled compressor cooling system to solve the problem that the existing shell-and-tube water-cooled compressor cooling systems, especially oil coolers, occupy a large space and are difficult to adapt to space-constrained application scenarios such as ships.

[0006] To achieve the above objectives, this utility model provides a compact shell-and-tube water-cooled compressor cooling system, including an aftercooler, a gas-water separator, and at least two oil coolers arranged in series. All oil coolers are stacked vertically, and the projections of the oil coolers, the aftercooler, and the gas-water separator on the horizontal plane are arranged along the same straight line.

[0007] Optionally, all oil coolers are the same size.

[0008] Optionally, the diameter of the oil cooler is equal to the diameter of the aftercooler.

[0009] Optionally, the aftercooler has an air inlet at its top and a water inlet, a water outlet, and an air outlet at its bottom. The air outlet of the aftercooler is connected to the air inlet of the air-water separator, and the water outlet of the aftercooler is connected to the water inlet of the oil cooler located at the bottom.

[0010] Optionally, the air outlet of the aftercooler is connected to the air inlet flange of the air-water separator, and the water outlet of the aftercooler is connected to the water inlet of the oil cooler located at the bottom via a pipe flange.

[0011] Optionally, in two adjacent oil coolers, the outlet of the lower oil cooler is connected to the inlet of the upper oil cooler, and the oil outlet of the upper oil cooler is connected to the inlet of the lower oil cooler.

[0012] Optionally, the outlet of the lower oil cooler is connected to the inlet of the upper oil cooler via a pipe flange, and the oil outlet of the upper oil cooler is connected to the oil inlet flange of the lower oil cooler.

[0013] Optionally, the outer wall of the oil cooler is provided with a connecting bracket, and the connecting brackets of two adjacent oil coolers are connected to each other.

[0014] Optionally, the compact shell-and-tube water-cooled compressor cooling system further includes a movable frame, and the aftercooler, the gas-water separator, and the oil cooler are all mounted on the base plate of the movable frame.

[0015] Optionally, the base plate of the mobile frame is provided with a first bracket and a second bracket, the aftercooler is installed on the first bracket, and the oil cooler is installed on the second bracket.

[0016] This utility model provides a compact shell-and-tube water-cooled compressor cooling system, which has at least one of the following beneficial effects:

[0017] 1) By improving the traditional single and bulky oil cooler into a structure of multiple small oil coolers connected in series, the heat exchange requirements of the entire unit can be precisely met. Furthermore, the diameter of the improved oil cooler is greatly reduced, and its length is shortened, allowing the aftercooler, oil cooler, and air-water separator to be installed in a straight line. This effectively reduces the space occupied by the cooling system, thus reserving ample space for the installation of core components such as the compressor, motor, and oil-air separator. This reduces the overall size of the air compressor, making it more suitable for compact operating conditions such as marine applications.

[0018] 2) By designing all oil coolers to be the same size and the diameter of the oil coolers to be the same as that of the aftercoolers, the connecting pipes between the components can use a uniform pipe diameter and bend angle, which reduces turbulence and local resistance loss caused by size differences, reduces oil pressure drop, simplifies pipe layout, and avoids space waste caused by size differences, which is especially suitable for narrow spaces such as ship cabins and containers.

[0019] 3) Flange connections are preferred between adjacent components, eliminating complex connecting pipelines and making the overall spatial layout simpler. Attached Figure Description

[0020] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention. Wherein:

[0021] Figure 1 This is a front view of a compact shell-and-tube water-cooled compressor cooling system provided in an embodiment of the present invention;

[0022] Figure 2 for Figure 1 The front view;

[0023] Figure 3 for Figure 1 Top view.

[0024] in:

[0025] 1-Aftercooler; 2-Gas-water separator; 3-Oil cooler; 4-First pipe; 5-Second pipe; 6-Connecting bracket; 7-Base plate; 8-First bracket; 9-Second bracket. Detailed Implementation

[0026] To make the objectives, advantages, and features of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clarify the explanation of the objectives of the embodiments of this utility model. Furthermore, the structures shown in the drawings are often part of the actual structure. In particular, different drawings may emphasize different aspects and sometimes use different scales.

[0027] As used in this invention, the singular forms “a,” “an,” and “the” include plural objects unless otherwise expressly indicated. As used in this invention, the term “or” is generally used to include “and / or” unless otherwise expressly indicated. As used in this invention, the term “a number” is generally used to include “at least one” unless otherwise expressly indicated. As used in this invention, the term “at least two” is generally used to include “two or more” unless otherwise expressly indicated. Furthermore, the terms “first,” “second,” and “third” 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 as “first,” “second,” or “third” may explicitly or implicitly include one or at least two of that feature.

[0028] Please refer to Figures 1-3This embodiment provides a compact shell-and-tube water-cooled compressor cooling system, including an aftercooler 1, a gas-water separator 2, and at least two oil coolers 3 arranged in series. All oil coolers 3 are stacked vertically, and the projections of the oil coolers 3, aftercooler 1, and gas-water separator 2 on the horizontal plane are arranged along the same straight line.

[0029] By modifying the traditional single and bulky oil cooler into a structure of multiple small oil coolers 3 connected in series, the heat exchange requirements of the entire unit can be precisely met. Furthermore, the diameter of the improved oil cooler 3 is greatly reduced, and its length is shortened, allowing the aftercooler 1, oil cooler 3, and air-water separator 2 to be arranged and installed in a straight line. This effectively reduces the space occupied by the cooling system, thus reserving ample space for the installation of core components such as the compressor, motor, and oil-air separator, thereby reducing the overall size of the air compressor and making it more suitable for compact operating conditions such as marine applications.

[0030] Preferably, all oil coolers 3 are the same size. By designing all oil coolers 3 to be the same size, the connecting pipes can use a uniform pipe diameter and bend angle, reducing turbulence and local resistance loss caused by size differences, reducing oil pressure drop, simplifying pipe layout, and avoiding space waste caused by size differences, which is especially suitable for narrow spaces such as ship cabins and containers.

[0031] In this embodiment, there are two oil coolers 3, and they are of the same size. Of course, depending on actual needs, the oil coolers 3 can be different, and this utility model does not limit this, nor does it impose a specific limit on the number of oil coolers 3.

[0032] Preferably, the diameter of the oil cooler 3 is equal to the diameter of the aftercooler 1, so that the connecting pipes can use a uniform pipe diameter and bend angle, while simplifying the pipe layout and avoiding space waste caused by size differences.

[0033] In this embodiment, the aftercooler 1 has an air inlet at its top and a water inlet, water outlet, and air outlet at its bottom. The air outlet of the aftercooler 1 is connected to the air inlet of the gas-water separator 2, and the water outlet of the aftercooler 1 is connected to the water inlet of the oil cooler 3 located at the bottom. The entire compressor structure is not shown in the figure. However, the front end of the aftercooler 1 may contain conventional structures such as a compressor main unit, motor, and oil-gas separator, and its air path is as follows... Figure 2 As shown by the green dashed line, the compressed gas enters the aftercooler 1 for cooling after passing through the oil-gas separator, and then enters the gas-water separator 2 for further gas-water separation.

[0034] Preferably, the air outlet of the aftercooler 1 is directly connected to the air inlet of the air-water separator 2 via a flange, and the water outlet of the aftercooler 1 is connected to the water inlet of the oil cooler 3 located at the bottom via a first pipe 4. The first pipe 4 is preferably connected to the water inlet and outlet via flanges, thereby eliminating complex connecting pipelines and making the overall spatial layout simpler, thus reserving sufficient space for the installation of core components such as the compressor, motor, and oil-gas separator.

[0035] In this embodiment, among two adjacent oil coolers 3, the outlet of the lower oil cooler 3 is connected to the inlet of the upper oil cooler 3, and the oil outlet of the upper oil cooler 3 is connected to the inlet of the lower oil cooler 3. For the same oil cooler 3, its inlet and outlet are located at opposite ends of the oil cooler 3, and its oil path is as follows: Figure 2 As shown by the red dotted line, lubricating oil enters through the inlet of the upper oil cooler 3, flows through the internal oil passages of oil cooler 3, exits through the outlet, and enters the lower oil cooler 3, finally exiting through the outlet of the lowest oil cooler 3. Meanwhile, the cooling water passages are as follows... Figure 2 As shown by the blue dashed line, cooling water enters from the inlet below the aftercooler 1, cools the compressed gas, and then exits from the outlet below the aftercooler 1 and enters the lowest oil cooler 3. It circulates between the oil coolers 3 to cool the lubricating oil flowing in the oil cooler 3, and finally exits from the outlet of the highest oil cooler 3.

[0036] Preferably, the outlet of the lower oil cooler 3 and the inlet of the upper oil cooler 3 are connected by a second pipe 5. The second pipe 5 is preferably connected to the inlet and outlet by a flange, while the oil outlet of the upper oil cooler 3 and the oil inlet of the lower oil cooler 3 are directly connected by a flange.

[0037] Preferably, the outer wall of the oil cooler 3 is provided with a connecting bracket 6, and the connecting brackets 6 of two adjacent oil coolers 3 are connected to each other to ensure the stability of the oil cooler 3 after installation. In this embodiment, the oil outlet of the upper oil cooler 3 and the oil inlet of the lower oil cooler 3 are both located at the left end and connected by a flange, and the connecting bracket 6 is located at the right end of two adjacent oil coolers 3 and connected by bolts.

[0038] In this embodiment, the cooling system of the compact shell-and-tube water-cooled compressor also includes a movable frame, and the aftercooler 1, the gas-water separator 2 and the oil cooler 3 are all mounted on the base plate 7 of the movable frame.

[0039] Furthermore, a first bracket 8 and a second bracket 9 are provided on the base plate 7 of the mobile frame. The aftercooler 1 is installed on the first bracket 8, and the oil cooler 3 is installed on the second bracket 9. The first bracket 8 and the second bracket 9 can be fixed to the base plate 7 of the mobile frame by conventional methods such as bolts. This utility model does not limit the specific structural form and size of the first bracket 8 and the second bracket 9, as long as the stable installation of the corresponding cooler can be ensured.

[0040] In summary, this utility model embodiment provides a compact shell-and-tube water-cooled compressor cooling system. By improving the traditional single and bulky oil cooler into a structure of multiple small oil coolers 3 connected in series, the heat exchange requirements of the entire machine can be precisely met. Furthermore, the diameter of the improved oil cooler 3 is greatly reduced, and its length is shortened, allowing the aftercooler 1, oil cooler 3, and gas-water separator 2 to be arranged and installed in a straight line, effectively reducing the space occupied by the cooling system. This provides ample space for the installation of core components such as the compressor, motor, and oil-gas separator, thereby reducing the overall size of the air compressor and making it more suitable for compact operating conditions such as marine applications.

[0041] The above are merely preferred embodiments of this utility model and do not constitute any limitation on this utility model. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and contents disclosed in this utility model without departing from the scope of the technical solutions of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A compact shell-and-tube water-cooled compressor cooling system, characterized in that, It includes an aftercooler, a gas-water separator, and at least two oil coolers arranged in series. All oil coolers are stacked vertically, and the projections of the oil coolers, the aftercooler, and the gas-water separator on the horizontal plane are arranged along the same straight line.

2. The compact shell-and-tube water-cooled compressor cooling system as described in claim 1, characterized in that, All oil coolers are the same size.

3. The compact shell-and-tube water-cooled compressor cooling system as described in claim 1, characterized in that, The diameter of the oil cooler is equal to the diameter of the aftercooler.

4. The compact shell-and-tube water-cooled compressor cooling system as described in claim 1, characterized in that, The aftercooler has an air inlet at its top and a water inlet, a water outlet, and an air outlet at its bottom. The air outlet of the aftercooler is connected to the air inlet of the air-water separator, and the water outlet of the aftercooler is connected to the water inlet of the oil cooler located at the bottom.

5. The compact shell-and-tube water-cooled compressor cooling system as described in claim 4, characterized in that, The air outlet of the aftercooler is connected to the air inlet flange of the air-water separator, and the water outlet of the aftercooler is connected to the water inlet of the oil cooler located at the bottom through a pipe flange.

6. The compact shell-and-tube water-cooled compressor cooling system as described in claim 1, characterized in that, In two adjacent oil coolers, the outlet of the lower oil cooler is connected to the inlet of the upper oil cooler, and the oil outlet of the upper oil cooler is connected to the inlet of the lower oil cooler.

7. The compact shell-and-tube water-cooled compressor cooling system as described in claim 6, characterized in that, The outlet of the lower oil cooler is connected to the inlet of the upper oil cooler via a pipe flange, and the outlet of the upper oil cooler is connected to the inlet flange of the lower oil cooler.

8. The compact shell-and-tube water-cooled compressor cooling system as described in claim 6, characterized in that, The outer wall of the oil cooler is provided with a connecting bracket, and the connecting brackets of two adjacent oil coolers are connected to each other.

9. The compact shell-and-tube water-cooled compressor cooling system as described in claim 1, characterized in that, The compact shell-and-tube water-cooled compressor cooling system also includes a movable frame, and the aftercooler, the gas-water separator, and the oil cooler are all mounted on the base plate of the movable frame.

10. The compact shell-and-tube water-cooled compressor cooling system as described in claim 9, characterized in that, The base plate of the mobile frame is provided with a first bracket and a second bracket. The aftercooler is installed on the first bracket and the oil cooler is installed on the second bracket.

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