Lubricating oil cooling device of centrifugal compressor

Abstract

The utility model relates to a lubricating oil cooling device of a centrifugal compressor. The lubricating oil cooling device of the centrifugal compressor comprises an oil cooling box and at least two angle adjusting assemblies. A plurality of inclined flow guide pipes with adjustable positions are arranged in the oil cooling box, the plurality of connected inclined flow guide pipes are arranged in a zigzag shape in the vertical direction of the oil cooling box to form a flow guide pipe system, and a refrigerant flow guide channel and at least one oil liquid heat exchange channel in contact with the refrigerant flow guide channel are arranged in the flow guide pipe system. The refrigerant flow guide channel is communicated with a cooling liquid circulation system, the oil liquid heat exchange channel is communicated with a lubricating oil circulation system, and the oil cooling box is communicated with an air cooling circulation system. The at least two angle adjusting assemblies are arranged in the oil cooling box and used for adjusting the angle of the inclined flow guide pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal compressors, in particular to a lubricating oil cooling device for centrifugal compressors. Background Art

[0002] For large centrifugal compressors, the temperature of the lubricating oil has a great impact on the energy consumption and safe operation of the compressor. If the temperature of the lubricating oil is too high, the viscosity of the lubricating oil will decrease, resulting in increased wear of the moving parts of the compressor, which directly affects the safety and service life of the machine. Since the pneumatic designs of compressors are different, different bearing adapters are usually required, resulting in different grades of lubricating oil used in different compressors. However, lubricating oil products cannot be mixed. During the research and development and testing process, different grades of lubricating oil usually need to be configured with a separate cooling system, which not only increases the cooling cost but also takes up valuable production space in the workshop. At the same time, the heat exchange of the traditional cooling system is only through water cooling, which is not efficient. Utility Model Content

[0003] The utility model aims to provide a centrifugal compressor lubricating oil cooling device, which can realize a set of cooling devices to cool a variety of different brands of lubricating oil at the same time to reduce cooling costs and reduce occupied space; can adjust the residence time of the lubricating oil in the oil heat exchange channel to control the temperature of the lubricating oil after heat exchange; on the basis of water cooling heat exchange, air cooling heat exchange is added to improve cooling efficiency.

[0004] In order to achieve the above object, the utility model provides a centrifugal compressor lubricating oil cooling device, comprising:

[0005] An oil cooling box, wherein a plurality of position-adjustable inclined flow guide pipes are arranged in a zigzag pattern along the vertical direction of the oil cooling box to form a flow guide pipe system, wherein a refrigerant flow guide channel and at least one oil heat exchange channel in contact with the refrigerant flow guide channel are arranged in the flow guide pipe system;

[0006] The refrigerant guide channel is connected to the coolant circulation system, the oil heat exchange channel is connected to the lubricating oil circulation system, and the oil cooling box is connected to the ventilation and cooling circulation system;

[0007] At least two angle adjustment components are arranged in the oil cooling box and are used to adjust the angle of the inclined flow guide pipe.

[0008] Optionally, a rotating shaft rotatably connected to the inner side of the oil cooling box is disposed at one end of the inclined flow guide pipe, and a suspension spring connected to the inner side of the oil cooling box is disposed at the other end of the inclined flow guide pipe.

[0009] Optionally, the angle adjustment component includes:

[0010] An electric telescopic rod is arranged in the oil cooling box along a transverse direction;

[0011] A roller bracket connected to the movable end of the electric telescopic rod;

[0012] At least one of the adjusting rollers is disposed on the roller bracket and is in contact with the inclined flow guide pipe.

[0013] Optionally, at least one first partition disposed in the inclined flow guide pipe along the axial direction of the inclined flow guide pipe is provided in the inclined flow guide pipe, for dividing the inner cavity of the inclined flow guide pipe into the refrigerant guide channel and the oil heat exchange channel.

[0014] Optionally, a flexible connecting pipe is connected between two adjacent inclined flow guide pipes, and the flexible connecting pipe includes:

[0015] An elastic steel bar, embedded in the wall of the flexible connecting pipe;

[0016] At least one second partition is arranged along the axial direction of the flexible connecting pipe, and is used to divide the inner cavity of the flexible connecting pipe into a first connecting channel corresponding to the refrigerant guide channel and a second connecting channel connected to the oil heat exchange channel.

[0017] Optionally, the oil cooling box is provided with:

[0018] A coolant inlet pipe connected to one end of the coolant guide channel;

[0019] A coolant output pipe connected to the other end of the coolant guide channel;

[0020] At least one oil input pipe connected to one end of at least one of the oil heat exchange channels;

[0021] At least one oil output pipe is connected to the other end of at least one of the oil heat exchange channels.

[0022] Optionally, a flow limiting valve is provided on the coolant inlet pipe.

[0023] Optionally, the oil cooling box is provided with:

[0024] A cold air inlet is arranged on one side of the oil cooling box;

[0025] The hot air outlet is arranged on the other side of the oil cooling box.

[0026] The beneficial effects of the utility model are as follows: by arranging a plurality of mutually independent oil heat exchange channels in the flow guide pipe system, a set of cooling devices can be used to cool a plurality of different brands of lubricating oils simultaneously to reduce cooling costs and occupy less space; by adjusting the inclination angle of the inclined flow guide pipe through the angle adjustment component, the residence time of the lubricating oil in the oil heat exchange channel can be adjusted to thereby control the temperature of the lubricating oil after heat exchange; by adding an air cooling circulation system to the oil cooling box, air cooling heat exchange is added on the basis of water cooling heat exchange, thereby improving cooling efficiency.

[0027] The cooling effect of the lubricating oil can also be controlled by setting a flow limiting valve on the coolant inlet pipe to adjust the coolant inlet flow.

[0028] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of a centrifugal compressor lubricating oil cooling device shown in one embodiment of the utility model;

[0030] Figure 2 This is a schematic internal structure diagram of a centrifugal compressor lubricating oil cooling device shown in one embodiment of the utility model;

[0031] Figure 3 This is a schematic internal structure diagram of an inclined flow guide pipe of a centrifugal compressor lubricating oil cooling device shown in one embodiment of the utility model;

[0032] Figure 4 This is a schematic internal structure diagram of a flexible connecting pipe of a centrifugal compressor lubricating oil cooling device shown in one embodiment of the utility model;

[0033] In the figure: 1. oil cooling box; 11. inclined guide pipe; 111. rotating shaft; 112. suspension spring; 113. first partition; 12. guide pipe system; 121. refrigerant guide channel; 122. oil heat exchange channel; 13. flexible connecting pipe; 131. elastic steel bar; 132. second partition; 133. first connecting channel; 134. second connecting channel; 14. coolant inlet pipe; 141. limiting valve; 15. coolant outlet pipe; 16. oil inlet pipe; 17. oil outlet pipe; 18. cold air inlet port; 19. hot air outlet port; 2. angle adjustment component; 21. electric telescopic rod; 22. roller bracket; 23. adjusting roller. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] See also Figure 1 , Figure 2 and Figure 3 A centrifugal compressor lubricating oil cooling device shown in a preferred embodiment of the present application includes an oil cooling box 1 and at least two angle adjustment components 2. A plurality of position-adjustable inclined flow guide pipes 11 are arranged in the oil cooling box 1, and a plurality of connected inclined flow guide pipes 11 are arranged in a zigzag shape along the vertical direction of the oil cooling box 1 to form a flow guide pipe system 12. A refrigerant flow guide channel 121 and at least one oil heat exchange channel 122 in contact with the refrigerant flow guide channel 121 are arranged in the flow guide pipe system 12. The refrigerant flow guide channel 121 is connected to the coolant circulation system, the oil heat exchange channel 122 is connected to the lubricating oil circulation system, and the oil cooling box 1 is connected to the ventilation cooling circulation system. The at least two angle adjustment components 2 are arranged in the oil cooling box 1, and are used to adjust the angle of the inclined flow guide pipe 11.

[0038] According to the scheme of the embodiment of the utility model, by setting a plurality of independent oil heat exchange channels 122 in the guide pipe system 12, the oil heat exchange channels 122 can all contact with the refrigerant guide channel 121 for heat exchange, so that a set of cooling devices can be used to cool a variety of different brands of lubricating oil at the same time to reduce cooling costs and reduce occupied space; by adjusting the inclination angle of the inclined guide pipe 11 by the angle adjustment component 2, the residence time of the lubricating oil in the oil heat exchange channel 122 can be adjusted to control the temperature of the lubricating oil after heat exchange; by adding an air cooling circulation system to the oil cooling box 1 to increase air cooling heat exchange on the basis of water cooling heat exchange, the cooling efficiency is improved.

[0039] The following is a detailed description with specific embodiments:

[0040] See also Figure 2 , a rotating shaft 111 is provided at one end of the inclined flow guide tube 11 and is rotatably connected to the inner side of the oil cooling box 1, and a suspension spring 112 is provided at the other end of the inclined flow guide tube 11 and is connected to the inner side of the oil cooling box 1. The angle adjustment assembly 2 includes an electric telescopic rod 21, a roller bracket 22 and at least one adjusting roller 23. The electric telescopic rod 21 is arranged in the oil cooling box 1 in the transverse direction, and the roller bracket 22 is connected to the movable end of the electric telescopic rod 21. The at least one adjusting roller 23 is arranged on the roller bracket 22 and is in contact with the inclined flow guide tube 11. The electric telescopic rod 21 drives the roller bracket 22 and the adjusting roller 23 thereon to reciprocate along the lower surface of the inclined flow guide tube 11. Under the movable support of the adjusting roller 23, the inclined flow guide tube 11 rotates along the rotating shaft 111 to adjust the tilt angle, and the suspension spring 112 can adapt to the angle change of the inclined flow guide tube 11 by telescoping. Specifically, in the present embodiment, two refrigerant guide channels 121 are provided, two angle adjustment components 2 are provided, and two adjustment rollers 23 on a single angle adjustment component 2 are also provided.

[0041] See also Figure 3 The inclined flow guide tube 11 is provided with at least one first partition 113 arranged along the axial direction of the inclined flow guide tube 11, which is used to separate the inner cavity of the inclined flow guide tube 11 into a refrigerant flow guide channel 121 and an oil heat exchange channel 122. Specifically, the first partition 113 is a copper partition. Figure 2 and Figure 4A flexible connecting pipe 13 is connected between two adjacent inclined flow guide pipes 11, and the flexible connecting pipe 13 includes an elastic steel bar 131 and at least one second partition 132. The elastic steel bar 131 is embedded in the wall of the flexible connecting pipe 13. The at least one second partition 132 is arranged along the axial direction of the flexible connecting pipe 13, and is used to divide the inner cavity of the flexible connecting pipe 13 into a first connecting channel 133 corresponding to the refrigerant flow guide channel 121 and a second connecting channel 134 communicating with the oil heat exchange channel 122. The flexible connecting pipe 13 can be adapted to the angle adjustment of the inclined flow guide pipe 11 by arranging the elastic steel bar 131 in the wall of the flexible connecting pipe 13, and its rigidity is appropriately increased while ensuring its deformation ability to improve the stability of the entire flow guide pipe system 12. Specifically, in this embodiment, two first partitions 113 are arranged in the inclined flow guide pipe 11, and two corresponding second partitions 132 are arranged in the flexible connecting pipe 13. The flexible connecting pipe 13 is a silicone tube, and the second partition 132 is a silicone partition.

[0042] See also Figure 1 and Figure 2 The oil cooling box 1 is provided with a coolant input pipe 14, a coolant output pipe 15, at least one oil input pipe 16 and at least one oil output pipe 17. In the present embodiment, the coolant input pipe 14 is provided near the lower side of the oil cooling box 1 and is connected to one end of the refrigerant guide channel 121. The coolant output pipe 15 is provided on the upper side of the oil cooling box 1 and is connected to the other end of the refrigerant guide channel 121. There are two oil input pipes 16, both provided on the upper side of the oil cooling box 1 and correspondingly connected to one end of the two oil heat exchange channels 122. There are two oil output pipes 17, both provided on the lower side of the oil cooling box 1 and connected to the other ends of the two oil heat exchange channels 122. With such a configuration, two oil circuits can be formed, and two different brands of lubricating oils can be cooled simultaneously.

[0043] See also Figure 2 The coolant inlet pipe 14 is provided with a flow limiting valve 141, which can adjust the coolant inlet flow rate and also control the cooling effect of the lubricating oil.

[0044] See also Figure 1 and Figure 2 The oil cooling box 1 is also provided with a cold air input port 18 arranged on one side of the oil cooling box 1 and a hot air output port 19 arranged on the other side of the oil cooling box 1. Since the oil cooling box 1 is a hollow design, in addition to the coolant in the refrigerant guide channel 121 contacting with the oil heat exchange channel 122 for heat exchange, cold air can also be introduced to contact with the oil heat exchange channel 122 for air cooling and heat exchange, thereby improving the cooling efficiency. In this embodiment, a support leg is provided on the lower side of the oil cooler, and a heat insulation layer is provided on the outer side of the cooler.

[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A centrifugal compressor lubricating oil cooling device, characterized in that: include: An oil cooling box, wherein a plurality of position-adjustable inclined flow guide pipes are arranged in a zigzag pattern along the vertical direction of the oil cooling box to form a flow guide pipe system, wherein a refrigerant flow guide channel and at least one oil heat exchange channel in contact with the refrigerant flow guide channel are arranged in the flow guide pipe system; The refrigerant guide channel is connected to the coolant circulation system, the oil heat exchange channel is connected to the lubricating oil circulation system, and the oil cooling box is connected to the ventilation and cooling circulation system; At least two angle adjustment components are arranged in the oil cooling box and are used to adjust the angle of the inclined flow guide pipe.

2. The centrifugal compressor lubricating oil cooling device according to claim 1, characterized in that: A rotating shaft rotatably connected to the inner side of the oil cooling box is disposed at one end of the inclined flow guide pipe, and a suspension spring connected to the inner side of the oil cooling box is disposed at the other end of the inclined flow guide pipe.

3. The centrifugal compressor lubricating oil cooling device according to claim 2, characterized in that: The angle adjustment component comprises: An electric telescopic rod is arranged in the oil cooling box along a transverse direction; A roller bracket connected to the movable end of the electric telescopic rod; At least one adjusting roller is arranged on the roller bracket and contacts the inclined flow guide pipe.

4. The centrifugal compressor lubricating oil cooling device according to claim 2, characterized in that: At least one first partition disposed in the inclined flow guide pipe along the axial direction of the inclined flow guide pipe is provided in the inclined flow guide pipe, and is used to separate the inner cavity of the inclined flow guide pipe into the refrigerant flow guide channel and the oil heat exchange channel.

5. The centrifugal compressor lubricating oil cooling device according to claim 4, characterized in that: A flexible connecting pipe is connected between two adjacent inclined flow guide pipes, and the flexible connecting pipe includes: An elastic steel bar, embedded in the wall of the flexible connecting pipe; At least one second partition is arranged along the axial direction of the flexible connecting pipe, and is used to divide the inner cavity of the flexible connecting pipe into a first connecting channel corresponding to the refrigerant guide channel and a second connecting channel connected to the oil heat exchange channel.

6. The centrifugal compressor lubricating oil cooling device according to claim 5, characterized in that: The oil cooling box is provided with: A coolant inlet pipe connected to one end of the coolant guide channel; A coolant output pipe connected to the other end of the coolant guide channel; At least one oil input pipe connected to one end of at least one of the oil heat exchange channels; At least one oil output pipe is connected to the other end of at least one of the oil heat exchange channels.

7. The centrifugal compressor lubricating oil cooling device according to claim 6, characterized in that: A flow limiting valve is arranged on the cooling liquid input pipe.

8. The centrifugal compressor lubricating oil cooling device according to claim 6, characterized in that: The oil cooling box is provided with: A cold air inlet is arranged on one side of the oil cooling box; The hot air outlet is arranged on the other side of the oil cooling box.

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