Bearing support assembly and rotating equipment

Abstract

The utility model relates to the field of rotating equipment, in particular to a bearing support assembly and rotating equipment. The bearing support assembly comprises a bearing piece, a support body and a bearing end plate. The bearing part is used for supporting the rotating shaft to rotate, the support body is provided with an installation cavity for installing and positioning the bearing part, and the bearing end plate is arranged on the side, close to the end of the rotating shaft, of the bearing part and connected with the support body to be arranged in the axial direction of the bearing part. And the bearing end plate and / or the support body are / is provided with a cooling air channel, and the cooling air channel communicates with the mounting cavity and is used for introducing cooling air into the mounting cavity to cool the bearing part. According to the bearing support assembly, the rotating shaft and the bearing part can be fully cooled, and the rotating shaft and the bearing part are effectively prevented from being locked.

Description

Technical Field

[0001] The present application relates to the field of rotating equipment, and in particular to a bearing support assembly and a rotating equipment. Background Art

[0002] For mechanical equipment structures with rotating rotors, such as steam compressors, during the rotor startup process, dry friction will occur between the rotor and the bearing, generating a large amount of heat. The bearings and rotors will expand due to the heat. If the bearings and rotors are not cooled in time, the rotor and bearings will lock, thereby damaging the bearings. Utility Model Content

[0003] The present application provides a bearing support assembly and a rotating device to solve the problem of locking caused by dry friction between a rotating shaft and a bearing component during startup. By fully cooling the bearing component and the rotating shaft, the reliability of the rotating device operation is improved and the service life of the bearing component is extended.

[0004] In a first aspect, the present application provides a bearing support assembly, comprising:

[0005] A bearing member, used for supporting the rotating shaft;

[0006] The support body is provided with an installation cavity for installing and positioning the bearing member;

[0007] A bearing end plate is arranged on one side of the bearing component close to the end of the rotating shaft, the bearing end plate is connected to the support body, and is used to limit the bearing component along the axial direction of the bearing component;

[0008] The bearing end plate and / or the support body is provided with a cooling air passage, and the outlet of the cooling air passage is connected to the installation cavity.

[0009] In some embodiments, the cooling air duct includes a first air duct arranged on the bearing end plate and a second air duct arranged on the support body; the inlet of the second air duct is used to supply cooling gas, the outlet of the second air duct is connected to the inlet of the first air duct, and the outlet of the first air duct is connected to the installation cavity.

[0010] In some embodiments, an outlet of the first air passage is arranged corresponding to a gap between the bearing member and the rotating shaft.

[0011] In some embodiments, a shaft seal is provided on one side of the bearing member away from the end of the shaft, and the shaft passes through the shaft seal and is rotatably sealed with the shaft seal;

[0012] The support body is provided with an exhaust passage extending through the outer surface thereof;

[0013] The rotating shaft seal is connected to the support body and has a first gap between the rotating shaft seal and the support body, wherein the first gap communicates with the installation cavity and the exhaust passage.

[0014] In some embodiments, a thrust mechanism axially abutting against the bearing member is provided between the shaft seal and the support body, and the shaft seal is connected to the support body through the thrust mechanism;

[0015] A second gap is provided between the thrust mechanism and the support body, and the second gap is connected to the exhaust passage.

[0016] In some embodiments, the exhaust channels are arranged in a plurality of groups along the circumference of the support body, and all of the exhaust channels are located at the outer periphery of the bearing end plate.

[0017] In some embodiments, the support body defines a second branch channel, one end of the second branch channel is connected to the inlet of the second air channel, and the other end of the second branch channel is connected to the first gap or the second gap.

[0018] In some embodiments, the bearing end plate is provided with a first comb-tooth sealing structure adapted to the rotating shaft, and / or the rotating shaft seal is provided with a second comb-tooth sealing structure adapted to the rotating shaft.

[0019] In a second aspect, the present application provides a rotating device, comprising a shell, a rotating shaft and a bearing support assembly as described in any one of the above items, wherein the shell is provided with an air inlet and an air inlet channel connected to the air inlet, and the outlet of the air inlet channel is connected to the inlet of the second air channel.

[0020] In some embodiments, the bearing support assembly is provided in two groups and is disposed at both ends of the shell, the air inlet is disposed on the outer periphery of the shell, the air inlet channel extends along the axial direction of the shell and is connected to the second air channel of the support body at both ends of the shell.

[0021] In some embodiments, the air inlet is connected to an air supply regulating mechanism, and the air supply regulating mechanism is used to adjust the air supply flow rate and / or air supply temperature of the air inlet;

[0022] The air inlet is provided with a first temperature sensor, the exhaust passage of the support body is provided with a second temperature sensor, and both the first temperature sensor and the second temperature sensor are connected to the air supply adjustment mechanism.

[0023] In some embodiments, the air supply adjustment mechanism includes a variable frequency fan; the air outlet of the variable frequency fan is connected to the air inlet.

[0024] In some embodiments, the air supply adjustment mechanism includes a fin heat exchanger provided at the air inlet of the variable frequency fan, and a liquid cooling channel is provided inside the fin heat exchanger;

[0025] The liquid cooling channel is serially connected with a flow regulating valve, and the flow regulating valve is connected to the first temperature sensor and the second temperature sensor.

[0026] The above-mentioned technical scheme provided by the embodiment of the present application has the following advantages compared with the prior art: by opening a cooling air duct connected to the mounting cavity in at least one of the bearing end plate and the support body, cooling gas is introduced into the mounting cavity of the support body through the cooling air duct, so that the bearing component is fully cooled; the cooling gas introduced into the mounting cavity can also cool the rotating shaft along the gap between the bearing component and the rotating shaft, effectively preventing the bearing component and the rotating shaft from locking due to heat expansion caused by dry friction.

[0027] As a preferred embodiment of the present application, the cooling air channel includes a first air channel opened in the bearing end plate and a second air channel opened in the support body and connected to the first air channel; the cooling gas is fed into the inlet of the second air channel, and the cooling gas is fed into the first air channel inside the bearing end plate from the outlet of the second air channel. Since the bearing end plate is used to axially block the bearing component and the outlet of the first air channel is connected to the installation cavity, the first air channel can axially supply air to cool the bearing component, and the cooling gas can also fully flow along the gap between the bearing component and the rotating shaft to fully cool the bearing component and the rotating shaft, effectively avoiding the problem of dry friction heating and locking of the two. The form in which the first air channel and the second air channel are separately arranged in the bearing end plate and the support body does not affect the power output of the rotating shaft and the connection with other equipment, facilitates the introduction of cooling gas, and can ensure that the cooling gas can flow along the axial direction of the rotating shaft and the bearing component, improving the cooling effect on the rotating shaft and the bearing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0031] Figure 1 A longitudinal sectional view of a rotating device provided in an embodiment of the present application;

[0032] Figure 2 for Figure 1 An enlarged view of the bearing support assembly in the middle section A;

[0033] Figure 3 for Figure 1 An enlarged view of the bearing support assembly in the middle section B;

[0034] Figure 4 A longitudinal cross-sectional view of a bearing end plate of a bearing support assembly provided in an embodiment of the present application;

[0035] Figure 5 A schematic diagram of a support body of a bearing support assembly provided in an embodiment of the present application.

[0036] Description of reference numerals:

[0037] 1-housing; 11-air inlet; 12-air inlet passage; 2-support body; 21-second air passage; 22-second branch passage; 23-exhaust passage; 3-main thrust fixing plate; 4-thrust plate; 5-auxiliary thrust fixing plate; 6-bearing member; 7-bearing end plate; 71-first air passage; 72-first comb tooth sealing structure; 8-rotating shaft sealing member; 81-second comb tooth sealing structure; 9-rotating shaft. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0039] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0040] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0041] In order to solve the technical problem in the prior art that mechanical equipment with a rotating rotor such as a steam compressor is prone to locking of the rotating shaft 9 and the bearing member 6 due to dry friction and heat expansion during the startup process, the present application provides a bearing support assembly and a rotating device, which can fully cool the bearing member 6 and the rotating shaft 9 and effectively prevent the bearing member 6 and the rotating shaft 9 from locking due to thermal expansion. The outer side of the bearing member 6 or the support body 2 referred to in the present application refers to the side of the bearing members 6 or the support body 2 of the two groups of bearing support assemblies that are away from each other when the bearing support assemblies are arranged at both ends of the rotating shaft 9, that is, the end side of the bearing member 6 close to the end of the rotating shaft 9 supported by it. In contrast, the inner side of the bearing member 6 or the support body 2 refers to the opposite side of the bearing member 6 or the support body 2 of the two groups of bearing support assemblies, that is, the end side of the bearing member 6 away from the end of the rotating shaft 9 supported by it.

[0042] The present application embodiment provides a bearing support assembly for supporting a rotating shaft 9 of a rotating device. Figures 1 to 4As shown, the bearing support assembly mainly includes a bearing member 6, a support body 2 and a bearing end plate 7. The bearing member 6 is used to support the rotation of the rotating shaft 9. The support body 2 is provided with a mounting cavity, and the bearing member 6 is installed and positioned relative to the support body 2 through the mounting cavity. The bearing end plate 7 is arranged on the side of the bearing member 6 close to the end of the rotating shaft 9, that is, the outer side of the bearing member 6. The bearing end plate 7 is connected to the support body 2, and the mounting cavity is sealed to a certain extent to limit the bearing along the axial direction of the bearing member 6. At least one of the bearing end plate 7 and the support body 2 is provided with a cooling air duct, that is, the cooling air duct can be provided on the bearing end plate 7 alone, or on the support body 2 alone, or on both the support body 2 and the bearing end plate 7 to supply air to the mounting cavity at the same time; or the cooling air duct is provided in sequence along the support body 2 and the bearing end plate 7, which is convenient for air supply and air delivery along the axial direction of the bearing component 6, so that the cooling gas is delivered along the axial direction of the bearing component 6 and the rotating shaft 9 and flows along the gap between the two, thereby improving the cooling effect and effectively preventing the bearing component 6 and the rotating shaft 9 from expanding and locking due to dry friction and heat generation.

[0043] In a preferred embodiment of the present application, the cooling air duct includes a first air duct 71 opened on the bearing end plate 7 and a second air duct 21 opened in the support body 2; the inlet of the second air duct 21 is used to pass the cooling gas, the outlet of the second air duct 21 is connected to the inlet of the first air duct 71, and the outlet of the first air duct 71 is connected to the installation cavity, so that the cooling gas can be blown toward the bearing part 6.

[0044] The bearing support assembly is used to support the rotating shaft 9 of the rotating equipment. When the rotating shaft 9 starts to rotate, cooling gas is introduced through the inlet of the second air channel 21 of the support body 2, and the cooling gas is sent into the first air channel 71 inside the bearing end plate 7 from the outlet of the second air channel 21. Since the bearing end plate 7 is used to axially block the bearing component 6 and the outlet of the first air channel 71 is arranged corresponding to the bearing component 6, the first air channel 71 can axially supply air to cool the bearing component 6. The cooling gas can enter the gap between the bearing component 6 and the rotating shaft 9 from the outside of the bearing component 6 and the rotating shaft 9, and fully cool the bearing component 6 and the rotating shaft 9, thereby effectively avoiding the problem of locking caused by dry friction and heat generation between the two.

[0045] In addition, the first air duct 71 and the second air duct 21 are separately arranged on the bearing end plate 7 and the support body 2, which neither affects the power output of the rotating shaft 9 nor the connection with other equipment, facilitates the introduction of cooling gas, and can ensure that the cooling gas can flow along the axial direction of the rotating shaft 9 and the bearing member 6, thereby improving the cooling effect on the rotating shaft 9 and the bearing member 6.

[0046] For rotating equipment of different models, the bearing support assemblies at both ends of the rotating shaft 9 may be different to a certain extent. The structure of the bearing support assembly is further described below in conjunction with the accompanying drawings and different embodiments.

[0047] Combined with reference Figure 1 and Figure 3 The bearing support assembly provided in the embodiment of the present application includes not only a bearing member 6, a support body 2 and a bearing end plate 7, but also a shaft seal 8; the bearing end plate 7 and the shaft seal 8 are arranged on both sides of the bearing member 6 and connected to the support body 2, that is, the bearing end plate 7 and the shaft seal 8 are respectively connected to both sides of the support body 2. The bearing end plate 7 and the shaft seal 8 are both provided with shaft holes for the shaft 9 to pass through, and the shaft 9 passes through the shaft holes of the bearing end plate 7 and the shaft seal 8 and cooperates with the bearing member 6.

[0048] For rotating equipment such as compressors and steam turbines, it is particularly important to ensure the sealing of the joint between the rotating shaft 9 and the bearing member 6. The inner circumference of the shaft hole of the bearing end plate 7 is provided with a first comb-tooth sealing structure 72 that rotates with the corresponding position of the rotating shaft 9, and the position where the rotating shaft 9 passes through the bearing end plate 7 is provided with a third comb-tooth sealing structure corresponding to the first comb-tooth sealing structure 72; since the bearing end plate 7 is connected to the support body 2, the bearing end plate 7 is fixed, that is, the first comb-tooth sealing structure 72 is a fixed comb tooth, and the third comb-tooth sealing structure is located on the rotating shaft 9 and is a movable comb tooth, so that the first comb-tooth sealing structure 72 and the third comb-tooth sealing structure form a layer of sealing for the rotating shaft 9 passing through the bearing member 6.

[0049] A second comb-tooth sealing structure 81 is provided on the inner circumference of the shaft hole of the rotating shaft seal 8, which is rotatably matched with the corresponding position of the rotating shaft 9. A fourth comb-tooth sealing structure corresponding to the second comb-tooth sealing structure 81 is provided at the position where the rotating shaft 9 passes through the rotating shaft seal 8. Since the rotating shaft seal 8 is connected to the support body 2, the rotating shaft seal 8 is fixed, that is, the second comb-tooth sealing structure 81 is a fixed comb tooth, and the fourth comb-tooth sealing structure is located on the rotating shaft 9 and is a movable comb tooth, so that the second comb-tooth sealing structure 81 and the fourth comb-tooth sealing structure form a single seal for the rotating shaft 9 passing through the bearing member 6, thereby improving the connection seal between the rotating shaft 9 and the bearing support assembly.

[0050] The support body 2 is provided with an exhaust passage 23 extending through its outer surface, and a first gap is formed between the rotating shaft seal 8 and the support body 2, through which the mounting cavity of the support body 2 and the exhaust passage 23 are connected. The cooling air enters the first air passage 71 from the second air passage 21 and enters the inner periphery of the bearing member 6 from the side of the bearing member 6 close to the end of the rotating shaft 9, that is, from the outside, to cool the bearing member 6 and the rotating shaft 9, then flows along the gap between the bearing member 6 and the rotating shaft 9 toward the bearing seal, flows through the first gap between the rotating shaft seal 8 and the support body 2 toward the exhaust passage 23 of the support body 2, and finally is discharged from the exhaust passage 23 to the outside of the support body 2.

[0051] Combined with reference Figure 3 and Figure 4 Based on the above sealing structure, the first air passage 71 and the second air passage 21 are arranged as follows:

[0052] The first air passage 71 provided in the bearing end plate 7 includes an axial butt joint section extending substantially along the axial direction of the bearing end plate 7, a first radial section extending substantially along the radial direction of the bearing end plate 7, and an axial air outlet section extending substantially along the axial direction of the bearing end plate 7. The axial butt joint section is used to butt joint and communicate with the second air passage 21, and the first radial section communicates the axial butt joint section and the axial air outlet section, and the axial air outlet section can output cooling gas to the bearing component 6 along the axial direction of the mounting cavity. The first comb teeth sealing structure 72 can be arranged on both sides of the first radial section.

[0053] In particular, the axial air outlet section, i.e., the outlet of the first air duct 71, is arranged corresponding to the gap between the rotating shaft 9 and the bearing member 6, so that the cooling gas output by the first air duct 71 can fully flow through the gap between the bearing member 6 and the rotating shaft 9, thereby fully cooling the bearing member 6 and the rotating shaft 9.

[0054] Furthermore, an annular air duct is provided at a position where the bearing end plate 7 is located at the first radial section connecting one end of the bearing air outlet section, and multiple groups of axial air outlet sections can be provided, one end of the multiple groups of axial air outlet sections are evenly distributed along the annular air duct, and the other end of the multiple groups of axial air outlet sections are evenly distributed along the inner circumference of the bearing component 6, thereby uniformly cooling the circumferential mating surface of the bearing component 6 and the rotating shaft 9.

[0055] Alternatively, the axial air outlet sections can be relatively densely arranged in the bottom area where the bearing component 6 and the rotating shaft 9 are in contact. This is because under the action of gravity, the area where dry friction occurs between the rotating shaft 9 and the bearing component 6 is mainly concentrated in the bottom area of ​​the inner circumference of the bearing component 6. By sealing the axial air outlet sections corresponding to this area, the cooling efficiency of the bottom area of ​​the inner circumference of the bearing component 6 is improved.

[0056] The second air channel 21 opened in the support body 2 includes a second radial section extending generally along the radial direction of the support body 2 and a first axial section extending generally along the axial direction of the support body 2; the first end of the second radial section extends to be connected to the inlet on the surface of the support body 2, the second end of the second radial section is connected to the first end of the first axial section, and the second end of the first axial section is used to be connected to the inlet of the first air channel 71 of the bearing end plate 7, that is, the axial docking section.

[0057] Further reading Figure 1 and Figure 3In some embodiments, the support body 2 is further provided with a second branch channel 22, one end of which is connected to the inlet of the second air channel 21, and the other end of which is connected to the first gap between the support body 2 and the shaft seal 8. The second branch channel 22 plays a role in diverting the cooling gas sent into the second air channel 21, so that part of the cooling gas is sent into the first air channel 71 and sent axially from the outside of the bearing member 6 into the space between the bearing member 6 and the shaft 9, and flows from the inside of the bearing member 6 to the first gap after cooling the bearing member 6 and the shaft 9. Generally speaking, the gap between the first comb tooth seal structure 72 and the third comb tooth seal structure is smaller than the gap between the second comb tooth seal structure 81 and the fourth comb tooth seal structure, so that the air pressure at the first comb tooth seal structure 72 is higher than the air pressure at the second comb tooth seal structure 81. Another part of the gas will be sent into the first gap from the second branch channel 22, and merge with the gas after cooling and heating the bearing 6 and the shaft 9. After merging, they are discharged from the exhaust channel 23 of the support body 2, effectively preventing the exhaust temperature from being too high.

[0058] Further reading Figure 5 In the above embodiment, in order to facilitate the exhaust of the support body 2, the exhaust channel 23 is preferably opened along the axial direction of the support body 2, and multiple groups can be arranged along the circumference of the support body 2, and all the exhaust channels 23 are located on the outer periphery of the bearing end plate 7 to avoid blocking the exhaust channels 23 when the bearing end plate 7 is connected to the support body 2. The support body 2 is provided with multiple groups of exhaust channels 23 to improve the exhaust efficiency, thereby improving the air intake efficiency and improving the cooling efficiency of the bearing member 6 and the rotating shaft 9. The arrangement of the above exhaust channels 23 makes it easy to discharge the cooled and heated gas to the outside of the rotating equipment. While the cooling gas flows along the second air channel 21, the first air channel 71, the gap between the bearing member 6 and the rotating shaft 9, the first gap and the exhaust channel 23, it can also carry and discharge the debris between the bearing member 6 and the rotating shaft 9.

[0059] Another embodiment of the present application provides a bearing support assembly structure as follows: Figure 1 and Figure 2 As shown, the bearing support assembly also includes a bearing member 6, a support body 2, a bearing end plate 7 and a shaft seal 8. Different from the above embodiment, the bearing support assembly also includes a thrust assembly, and the shaft seal 8 is installed and connected to the support body 2 through the thrust assembly. The thrust assembly plays a role in balancing the axial thrust of the shaft 9 acting on the bearing member 6.

[0060] The thrust assembly is fixed to the inner side of the support body 2, and a mounting hole is arranged on the inner periphery of the thrust assembly, and the shaft seal 8 is embedded in the mounting hole on the inner periphery of the thrust assembly. A second gap is provided between the side of the thrust assembly facing the support body 2 and the support body 2, and the second gap communicates with the mounting cavity and the exhaust passage 23. The cooling gas is axially sent from the outer side of the bearing member 6 into the gap between the bearing member 6 and the shaft 9 through the second air passage 21 and the first air passage 71 to cool the bearing member 6 and the shaft 9, and then flows to the second gap, and is transported to the exhaust passage 23 through the second gap and discharged from the exhaust passage 23.

[0061] When the second air channel 21 of the support body 2 is provided with a second branch channel 22, the second branch channel 22 connects the second gap and the entrance of the second air channel 21, so that the gas diverted by the second branch channel 22 can be mixed with the gas that cools and heats the bearing 6 and the rotating shaft 9 through the second gap, thereby reducing the temperature of the gas discharged from the exhaust channel 23.

[0062] Exemplarily, the thrust assembly includes a main thrust fixing plate 3, a thrust plate 4 and an auxiliary thrust fixing plate 5, the thrust plate 4 is connected between the main thrust fixing plate 3 and the auxiliary thrust fixing plate 5, and the main thrust fixing plate 3 and the auxiliary thrust fixing plate 5 are superimposed on the thrust plate 4 and then connected and installed on the support body 2 through fasteners. The second gap is formed between the main thrust fixing plate 3, the thrust plate 4 and the auxiliary thrust fixing plate 5. The gas after cooling and heating the bearing member 6 and the rotating shaft 9 is mixed with the cooling gas flowing to the second gap through the second gap and the second branch channel 22, and finally discharged from the exhaust channel 23 of the support body 2 to prevent the exhaust temperature from being too high.

[0063] The present application also provides a rotating device, such as Figures 1 to 3 As shown, the rotating device includes a housing 1, a rotating shaft 9 and the bearing support assembly provided in the above embodiment, and the support assembly is provided in two groups and respectively supports the two ends of the rotating shaft 9. Among them, one group of the bearing support assemblies is provided with a thrust assembly for balancing the axial thrust of the rotating shaft 9 acting on the bearing member 6.

[0064] In order to facilitate the provision of cooling gas to the bearing support assemblies at both ends of the housing 1, the housing 1 is provided with an air inlet 11 and an air inlet passage 12, the air inlet 11 is communicated with the air inlet passage 12, and the air inlet passage 12 generally extends along the axial direction of the housing 1 to both ends of the housing 1 and is respectively communicated with the second air passage 21 of the support body 2 at both ends of the housing 1. At this time, the second air passage 21 of the support body 2 also includes an axial transition section that transitionally connects the air inlet passage 12 and the second radial section.

[0065] After the cooling gas is fed into the air inlet 11 into the air inlet passage 12, the cooling gas is respectively transported to the bearing support assemblies at both ends of the housing 1 along the air inlet passage 12, and after cooling the bearing member 6 and the rotating shaft 9 through the second air passage 21 and the first air passage 71, the cooling gas is discharged from the exhaust passage 23 of the support body 2. When the cooling gas flows through the housing 1 along the air inlet passage 12, the housing 1 of the rotating device can also be cooled to a certain extent.

[0066] The air inlet 11 is connected to an air supply regulating mechanism, which can supply cooling gas to the air inlet 11, and at the same time regulate the flow rate and temperature of the cooling gas supplied to the air inlet passage 12 through the air inlet 11, thereby regulating the flow rate and temperature of the cooling gas supplied to the bearing support assembly at both ends of the rotating shaft 9, and realizing the regulation of the cooling efficiency of the rotating shaft 9 and the bearing component 6. A first temperature sensor is provided at the air inlet 11 of the shell 1, and a second temperature sensor is provided at the exhaust passage 23 of the support body 2, and both the first temperature sensor and the second temperature sensor are connected to the air supply regulating mechanism. Among them, the first temperature sensor is used to detect the intake temperature of the cooling gas, and the second temperature sensor is used to detect the exhaust temperature after cooling the rotating shaft 9 and the bearing component 6, so that the air supply regulating mechanism can regulate the flow rate and temperature of the cooling gas supplied to the air inlet 11 by the difference between the intake temperature and the exhaust temperature to meet the cooling requirements of the rotating shaft 9 and the bearing component 6.

[0067] When the difference between the exhaust temperature and the intake temperature is greater than the preset value, it indicates that the temperature rise of the cooling gas after cooling the rotating shaft 9 and the bearing 6 is large, and the cooling load on the rotating shaft 9 and the bearing 6 is insufficient. It is necessary to increase the flow rate of the cooling gas sent into the air inlet 11 or to reduce the temperature of the cooling gas sent into the air inlet 11 to improve the cooling efficiency of the cooling gas on the rotating shaft 9 and the bearing 6 to avoid the temperature increase of the rotating shaft 9 and the bearing 6 and expansion and locking.

[0068] Exemplarily, the air supply regulating mechanism can adjust the cooling efficiency of the counter-rotating shaft 9 and the bearing member 6 by adjusting the air supply flow rate. At this time, the air supply regulating mechanism includes a variable frequency fan and a controller, and the air outlet of the variable frequency fan is connected to the air inlet 11 of the housing 1 through the guide structure. The controller is connected to the variable frequency fan to control the variable frequency fan to change the speed; the first temperature sensor and the second temperature sensor are both connected to the controller, so that the controller adjusts the speed of the variable frequency fan based on the temperature difference between the first temperature sensor and the second temperature sensor, thereby adjusting the air supply flow rate sent to the air inlet.

[0069] Furthermore, the air supply regulating mechanism can also adjust the cooling efficiency of the rotating shaft 9 and the bearing member 6 by adjusting the air supply temperature. At this time, the air supply regulating mechanism also includes a fin heat exchanger arranged at the air inlet of the variable frequency fan, and a liquid cooling channel is arranged inside the fin heat exchanger, and the liquid cooling channel is used to pass cooling liquid such as cooling water. The liquid cooling channel is connected to the flow regulating valve, and the flow regulating valve, the first temperature sensor and the second temperature sensor are connected through a controller. The gas entering from the air inlet of the variable frequency fan will be cooled by heat exchange with the cooling water flowing through the liquid cooling channel inside the fin heat exchanger before entering the variable frequency fan.

[0070] When the temperature difference between the first temperature sensor and the second temperature sensor is greater than a preset value, the controller controls the flow regulating valve to increase its opening, and the flow of cooling water entering the liquid cooling channel increases, so that the temperature of the cooling air entering the variable frequency fan through the fin heat exchanger and the cooling water is reduced, thereby increasing the cooling efficiency of the cooling gas on the bearing 6 and the rotating shaft 9, and avoiding the bearing 6 and the rotating shaft 9 from expanding and locking due to the increase in temperature.

[0071] It should be noted that the controller adjusts the fan speed based on the temperature difference detected by different temperature sensors, and adjusts the valve opening based on the temperature difference detected by different temperature sensors, which belongs to the prior art. The present application only needs to input the corresponding temperature difference and speed relationship, as well as the temperature difference and valve opening relationship into the controller, and does not involve improvements to the controller and related programs.

[0072] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments, and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0073] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0074] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A bearing support assembly, characterized in that: include: A bearing member, used for supporting the rotating shaft; The support body is provided with an installation cavity for installing and positioning the bearing member; A bearing end plate is arranged on one side of the bearing component close to the end of the rotating shaft, the bearing end plate is connected to the support body, and is used to limit the bearing component along the axial direction of the bearing component; The bearing end plate and / or the support body is provided with a cooling air passage, and the outlet of the cooling air passage is connected to the installation cavity.

2. The bearing support assembly according to claim 1, characterized in that: The cooling air duct includes a first air duct arranged on the bearing end plate and a second air duct arranged on the support body; the inlet of the second air duct is used to supply cooling gas, the outlet of the second air duct is connected to the inlet of the first air duct, and the outlet of the first air duct is connected to the installation cavity.

3. The bearing support assembly according to claim 2, characterized in that: The outlet of the first air passage is arranged corresponding to the gap between the bearing component and the rotating shaft.

4. The bearing support assembly according to claim 3, characterized in that: A shaft seal is provided on one side of the bearing member away from the end of the shaft, and the shaft passes through the shaft seal and is rotatably sealed with the shaft seal; The support body is provided with an exhaust passage extending through the outer surface thereof; The rotating shaft seal is connected to the support body and has a first gap between the rotating shaft seal and the support body, wherein the first gap communicates with the installation cavity and the exhaust passage.

5. The bearing support assembly according to claim 4, characterized in that: A thrust mechanism axially abutting against the bearing member is provided between the shaft seal and the support body, and the shaft seal is connected to the support body via the thrust mechanism; A second gap is provided between the thrust mechanism and the support body, and the second gap is connected to the exhaust passage.

6. The bearing support assembly according to claim 5, characterized in that: The exhaust passages are arranged in a plurality of groups along the circumferential direction of the support body, and all of the exhaust passages are located at the outer periphery of the bearing end plate.

7. The bearing support assembly according to claim 5, characterized in that: The support body defines a second branch channel, one end of the second branch channel is communicated with the inlet of the second air channel, and the other end of the second branch channel is communicated with the first gap or the second gap.

8. The bearing support assembly according to any one of claims 4 to 7, characterized in that: The bearing end plate is provided with a first comb-teeth sealing structure adapted to the rotating shaft, and / or the rotating shaft seal is provided with a second comb-teeth sealing structure adapted to the rotating shaft.

9. A rotating device, characterized in that: It comprises a shell, a rotating shaft and the bearing support assembly according to any one of claims 2 to 8, wherein the shell is provided with an air inlet and an air inlet passage connected to the air inlet, and the outlet of the air inlet passage is connected to the inlet of the second air passage.

10. The rotary device according to claim 9, characterized in that The bearing support assembly is provided in two groups and is disposed at both ends of the shell. The air inlet is disposed on the outer periphery of the shell. The air inlet passage extends along the axial direction of the shell and is communicated with the second air passage of the support body at both ends of the shell.

11. The rotating device according to claim 9, characterized in that The air inlet is connected to an air supply regulating mechanism, and the air supply regulating mechanism is used to regulate the air supply flow rate and / or air supply temperature of the air inlet; The air inlet is provided with a first temperature sensor, the exhaust passage of the support body is provided with a second temperature sensor, and both the first temperature sensor and the second temperature sensor are connected to the air supply adjustment mechanism.

12. The rotary device according to claim 11, characterized in that The air supply adjustment mechanism includes a variable frequency fan; the air outlet of the variable frequency fan is connected to the air inlet.

13. The rotary device according to claim 12, characterized in that The air supply adjustment mechanism comprises a fin heat exchanger arranged at the air inlet of the variable frequency fan, and a liquid cooling channel is arranged inside the fin heat exchanger; The liquid cooling channel is serially connected with a flow regulating valve, and the flow regulating valve is connected to the first temperature sensor and the second temperature sensor.

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