Oil supply device and thrust bearing

Abstract

When the oil supply device is used, the temperature of a bearing bush of a thrust bearing is monitored in real time through a monitoring module, and bearing bush temperature data capable of reflecting the lubrication and heat dissipation state of the bearing bush is obtained. After the control module receives the tile temperature data, the control module controls the oil outlet part to adjust the oil outlet amount according to the tile temperature data, for example, when it is monitored that the tile temperature rises, it is indicated that the bearing load is increased and heating is increased under the current working condition, the control module sends an instruction to the adjusting module, and the oil outlet amount of the oil outlet part is dynamically adjusted and increased so as to strengthen cooling; on the contrary, when the tile temperature is low, the oil outlet amount of the oil outlet part can be reduced, and therefore on-demand supply of the oil amount is achieved. According to the oil supply device, through cooperative work of the monitoring module, the control module and the adjusting module, matching of the oil supply amount and the real-time thermal load of the bearing is achieved, namely accurate control over oil supply is achieved, and meanwhile operation safety and stability of the thrust bearing under various working conditions are guaranteed. The invention further relates to a thrust bearing.

Description

Technical Field

[0001] This application relates to the field of thrust bearing equipment technology, and in particular to an oil supply device and a thrust bearing. Background Technology

[0002] The pressure difference before and after each impeller stage of the compressor during operation generates thrust along the axis of rotation. The cumulative effect of multiple stages will generate a large axial thrust. In addition to the portion offset by the compressor rotor itself, the residual thrust will act on the thrust bearing, which becomes an important structure for achieving the axial stability of the compressor rotor.

[0003] When a compressor operates under different conditions, the axial thrust generated by the rotor will vary due to changes in the medium and fluctuations in inlet and outlet parameters, thus affecting the lubrication requirements of the thrust bearing. If the maximum oil supply is maintained at all times, it will not only lead to high energy consumption in the oil supply system and excessive pipeline pressure, but also cause the lubricating oil cooling system and filtration system to operate under high load for a long time, reducing the economic efficiency of the system operation.

[0004] Therefore, how to achieve precise control of oil supply is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application provides an oil supply device and a thrust bearing to achieve precise control of oil supply.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An oil supply device includes an oil injection module, a control module, an adjustment module, and a monitoring module. The oil injection module is installed in a bearing housing. The adjustment module includes an oil inlet and an oil outlet. The oil injection module is connected to the oil inlet to supply oil to the adjustment module. A bearing bush is installed inside the bearing housing. The monitoring module monitors the temperature of the bearing bush and outputs bearing bush temperature data to the control module. The oil outlet is connected to the bearing bush. The control module controls the oil outlet to adjust the oil output based on the bearing bush temperature data.

[0007] Optionally, in the above-mentioned oil supply device, the oil injection module includes an oil injection pipeline, the bearing housing has a mounting groove opened radially, the oil injection pipeline is disposed inside the mounting groove, and the first end of the oil injection pipeline is used to connect to the oil supply station, and the second end of the oil injection pipeline is connected to the oil inlet.

[0008] Optionally, in the above-mentioned oil supply device, the oil inlet is formed by the enclosure between the mounting groove and the second end of the oil injection pipeline. The oil inlet includes an oil storage chamber, the oil outlet includes an oil outlet pipe, the bearing housing is provided with a bearing, the first end of the oil outlet pipe is fixedly connected to the bearing and communicates with the oil storage chamber, and the second end of the oil outlet pipe is communicated with the bearing bush. The oil outlet pipe is equipped with a one-way valve.

[0009] Optionally, in the above-mentioned oil supply device, the second end of the oil injection pipeline is provided with at least one oil outlet hole along the radial direction of the oil injection pipeline, the oil outlet part includes at least one oil nozzle, and the oil injection pipeline can move axially along the oil injection pipeline inside the mounting groove so that at least one oil outlet hole is connected to at least one oil nozzle.

[0010] Optionally, in the above-mentioned oil supply device, the oil outlet includes two or more of the above-mentioned oil nozzles, and the two or more of the above-mentioned oil nozzles are arranged in parallel.

[0011] Optionally, in the above-mentioned oil supply device, the groove wall of the mounting groove is provided with a first engaging part, and the outer wall of the oil injection pipeline is provided with a second engaging part. When the first engaging part engages with the second engaging part, the oil outlet and the oil injector are connected in a one-to-one correspondence.

[0012] Optionally, the above-mentioned oil supply device also includes an alarm module, which is electrically connected to the control module. When the bearing temperature data reaches a preset upper limit value and the oil supply pressure of the oil injection module reaches a preset upper limit value, the alarm module outputs an alarm signal to the control module.

[0013] Optionally, in the above-mentioned oil supply device, the monitoring module includes a temperature sensor and a shaft displacement monitor. The temperature sensor is used to monitor the temperature of the bearing and output bearing temperature data to the control module. The shaft displacement monitor is used to monitor the axial displacement direction of the compressor rotor and output displacement direction data to the control module. The control module is configured to: control the oil outlet to adjust the oil output according to the bearing temperature data, and determine whether the oil injection module injects oil into the main thrust side or the auxiliary thrust side of the bearing according to the displacement direction data.

[0014] The oil supply device provided by this invention monitors the temperature of the thrust bearing bush in real time via a monitoring module, acquiring bush temperature data that reflects the lubrication and heat dissipation status of the bush. After receiving the bush temperature data, the control module adjusts the oil output at the oil outlet based on the data. For example, when a rise in bush temperature is detected, indicating increased bearing load and heat generation under current operating conditions, the control module sends a command to the adjustment module to dynamically increase the oil output at the oil outlet to enhance cooling. Conversely, when the bush temperature is low, the oil output can be reduced, thus achieving on-demand oil supply. Through the coordinated operation of the monitoring module, control module, and adjustment module, the oil supply device achieves matching of the oil supply volume with the real-time thermal load of the bearing, i.e., precise control of the oil supply, while ensuring the safe and stable operation of the thrust bearing under various operating conditions.

[0015] This application embodiment also provides a thrust bearing, including two oil supply devices as described in any of the above claims, wherein the two oil supply devices are respectively disposed on the main thrust side and the auxiliary thrust side of the thrust bearing, the oil supply devices being used to provide adjustable lubricating oil to the bearing bush on the main thrust side or the auxiliary thrust side, and the thrust bearing being used to be installed on a compressor to bear the axial thrust of the compressor rotor.

[0016] Optionally, in the above-mentioned thrust bearing, the control module is used to execute an adjustment method, the adjustment method including: When the displacement direction data indicates that the rotor moves toward the main thrust side, and the bearing temperature data of the main thrust side exceeds the first threshold, the adjustment module of the oil supply device on the main thrust side is controlled to increase the oil output; when the displacement direction data indicates that the rotor moves toward the auxiliary thrust side, and the bearing temperature data of the auxiliary thrust side exceeds the second threshold, the adjustment module of the oil supply device on the auxiliary thrust side is controlled to increase the oil output.

[0017] The thrust bearing provided by the present invention adopts all the technical solutions of all the above embodiments, and therefore has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Attached Figure Description

[0018] The accompanying drawings, incorporated in and forming part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort. One or more embodiments are illustrated by way of example through the corresponding images in the accompanying drawings. These exemplary descriptions do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0019] Figure 1 This is a schematic diagram of the thrust bearing provided in an embodiment of this application; Figure 2 Provided for the embodiments of this application Figure 1 An enlarged schematic diagram of part A in the middle.

[0020] Explanation of reference numerals in the attached figures: Bearing housing 100, thrust bearing 200, thrust disc 201, bearing shell 300, oil injection line 400, oil outlet 401, second engagement part 402, oil injector 500, first engagement part 600, main shaft 700. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0023] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can 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 in the text will be interpreted accordingly.

[0024] See Figure 2 This application provides an oil supply device, including an oil injection module, a control module, an adjustment module, and a monitoring module. The oil injection module is installed in the bearing housing 100. The adjustment module includes an oil inlet and an oil outlet. The oil injection module is connected to the oil inlet to supply oil to the adjustment module. The bearing housing 100 is equipped with a bearing bush 300. The monitoring module is used to monitor the temperature of the bearing bush 300 and output the bush temperature data to the control module. The oil outlet is connected to the bearing bush 300. The control module is used to control the oil outlet to adjust the oil output according to the bush temperature data.

[0025] Specifically, the bearing housing 100 serves as a sealed outer shell, housing the main shaft 700 (i.e., the compressor rotor) and the thrust bearing 200. The thrust bearing 200 includes a thrust disc 201 mounted on the main shaft 700, and a main thrust-side bearing 300 and an auxiliary thrust-side bearing 300 located on both sides of the thrust disc 201, which together bear and balance the axial thrust generated during compressor operation. The aforementioned oil supply device can be simultaneously mounted on both the main thrust side and the auxiliary thrust side.

[0026] The oil supply device provided by this invention, during use, uses a monitoring module to monitor the temperature of the bearing shell 300 of the thrust bearing 200 in real time, acquiring shell temperature data that reflects the lubrication and heat dissipation status of the shell 300. After receiving the shell temperature data, the control module controls the oil outlet section to adjust the oil output according to the shell temperature data. For example, when the shell temperature is detected to rise, indicating that the bearing load and heat generation are increasing under the current operating conditions, the control module sends a command to the adjustment module to dynamically adjust and increase the oil output of the oil outlet section to enhance cooling; conversely, when the shell temperature is low, the oil output of the oil outlet section can be reduced, thereby achieving on-demand oil supply. Through the coordinated work of the monitoring module, control module, and adjustment module, the oil supply device achieves matching between the oil supply volume and the real-time thermal load of the bearing, that is, it achieves precise control of the oil supply, while ensuring the safe and stable operation of the thrust bearing 200 under various operating conditions.

[0027] To optimize the above technical solution, the oil injection module includes an oil injection pipeline 400. The bearing housing 100 has a mounting groove in the radial direction. The oil injection pipeline 400 is located inside the mounting groove. The first end of the oil injection pipeline 400 is used to connect to the oil supply station, and the second end of the oil injection pipeline 400 is connected to the oil inlet.

[0028] Specifically, the oil injection module is an oil injection pipe 400 embedded in the radial mounting groove of the bearing housing 100. The first end of the oil injection pipe 400 is connected to the compressor's oil supply station through an external oil circuit, and the second end extends into the bearing housing 100.

[0029] During installation, the oil injection line 400 is embedded and fixed in the mounting groove of the bearing housing 100. Lubricating oil from the external oil supply station is pumped in through the first end of the oil injection line 400, flows through the line, and is stably output from the second end, entering the oil inlet of the regulating module. The mounting groove ensures that the line remains in a constant position throughout operation, preventing displacement or loosening due to unit vibration. Furthermore, the standardized mounting groove design facilitates quick and accurate installation and maintenance of the oil injection line 400, improving production assembly efficiency.

[0030] It should be noted that the adjustment module can have various structural forms to adjust the oil volume. The following are specific structural embodiments of two adjustment modules.

[0031] In some embodiments, an oil inlet is formed between the mounting groove and the second end of the oil injection pipe 400. The oil inlet includes an oil storage chamber, and the oil outlet includes an oil outlet pipe. A bearing is provided inside the bearing housing 100. The first end of the oil outlet pipe is fixedly connected to the bearing and communicates with the oil storage chamber. The second end of the oil outlet pipe is communicated with the bearing bush 300. A one-way valve is provided inside the oil outlet pipe.

[0032] Specifically, the oil reservoir acts as a miniature buffer container, serving to stabilize pressure and temporarily store lubricating oil. The oil outlet pipe is a directional delivery channel connecting the oil reservoir to the lubrication point of the bearing 300. A one-way valve is installed on the oil outlet pipe, allowing lubricating oil to flow only from the oil reservoir to the bearing 300 in one direction, preventing reverse flow. Furthermore, the opening degree of the one-way valve is adjustable, enabling it to regulate the oil flow rate.

[0033] Specifically, the aforementioned check valves include, but are not limited to, adjustable needle valve type check valves or pilot-controlled proportional check valves, as long as they can achieve one-way check and adjustable throttling, which will not be elaborated here.

[0034] In operation, lubricating oil enters the reservoir through the oil filling line 400. The oil pressure overcomes the preload (such as spring force) of the check valve, causing the valve core to open. Unlike traditional check valves, the maximum stroke or initial opening of the valve core is controllable and adjustable. The control module can send commands to the actuator (such as a micro motor) that adjusts the check valve opening as needed. When the command requests an increase in flow rate, the actuator increases the opening of the check valve, reducing flow resistance and increasing flow rate under the same oil pressure; when a decrease in flow rate is requested, the opening is decreased. For complete shut-off, the valve core can be completely closed. When the oil supply pressure disappears or decreases, the valve will automatically close under spring action, regardless of the opening setting, to prevent backflow.

[0035] By arranging the aforementioned check valves, precise control of the oil supply can be further achieved, while ensuring the safe and stable operation of the thrust bearing 200 under various working conditions.

[0036] In other embodiments, the second end of the oil injection line 400 is provided with at least one oil outlet hole 401 along the radial direction of the oil injection line 400, and the oil outlet part includes at least one fuel injector 500. The oil injection line 400 is movable along the axial direction of the oil injection line 400 inside the mounting groove so that at least one oil outlet hole 401 is connected to at least one fuel injector 500.

[0037] Specifically, the oil outlet 401 is a flow outlet located on the wall of the oil injection pipe 400, and the fuel injector 500 is used to atomize or directionally spray the oil. The axial relative movement between the oil outlet 401 and the fuel injector 500 is the mechanical actuator for flow regulation. That is, by moving the oil injection pipe 400, the alignment area between the oil outlet 401 and the fuel injector 500 can be changed, thereby physically changing the flow cross-sectional area.

[0038] In operation, the control module drives an actuator (such as a motor-driven screw mechanism) to move the oil injection line 400 axially as needed. When a large flow rate is required, the oil injection line 400 is moved so that the oil outlet 401 is completely aligned with the inlet of the injector 500, maximizing the flow area. When a small flow rate is required, the oil injection line 400 is moved to partially offset the two, reducing the flow area. When the oil supply needs to be cut off, the two can be completely offset. The flow rate can be continuously or stepped adjusted by controlling the axial displacement, thereby achieving precise control of the oil supply.

[0039] It should be noted that the above embodiment is a scheme to control the fuel supply by adjusting the alignment area of ​​a single oil outlet 401 and the fuel injector 500. The following embodiment is a scheme to control the fuel supply by adjusting the number of corresponding oil outlets 401 and fuel injectors 500.

[0040] In other embodiments, the oil outlet includes two or more fuel injectors 500, and the two or more fuel injectors 500 are arranged in parallel.

[0041] In operation, the control module drives the actuator to move the oil injection pipe 400 axially within the mounting slot according to flow requirements. When the oil injection pipe 400 moves to the first position, its oil outlet 401 is fully aligned with the inlet of only one injector 500. At this time, only that injector 500 is working, resulting in a low flow rate. When the oil injection pipe 400 continues to move to the second position, the oil outlet 401 (which can be a long hole or two holes from a set) is simultaneously aligned with the inlets of two injectors 500. At this time, the two injectors 500 work in parallel, increasing the total flow rate. Similarly, by controlling the axial displacement, different numbers of injectors 500 can be connected in stages, thus achieving stepped flow rate adjustment. The flow rate variation mainly depends on the sum of the number of injectors 500 in operation. This arrangement allows for the design of multiple speed settings to accommodate different lubricating oil flow requirements under various typical operating conditions of the compressor (such as startup, low load, and high load), thereby achieving multi-stage flow output and precise control of oil supply.

[0042] To optimize the above technical solution, the groove wall of the installation slot is provided with a first engaging part 600, and the outer wall of the oil injection pipe 400 is provided with a second engaging part 402. When the first engaging part 600 and the second engaging part 402 engage, the oil outlet 401 and the oil injector 500 are connected in a one-to-one correspondence.

[0043] Specifically, the first engaging part 600 and the second engaging part 402 together constitute a mechanical positioning and locking device, which provides mechanical locking when the oil injection line 400 moves to a preset position.

[0044] In some embodiments, both the first engaging portion 600 and the second engaging portion 402 include multiple protrusions or grooves. When the control module drives the oil injection line 400 to move axially, the second engaging portion 402 (such as a protrusion) on the oil injection line 400 slides along the mounting groove. When the preset flow rate is reached, the second engaging portion 402 will be mechanically engaged with the first engaging portion 600 (such as a groove). At this time, the oil injection line 400 is locked in this position and cannot move freely, so that the oil outlet 401 is perfectly aligned with one or more fuel injectors 500, thereby ensuring that the connection state of the oil circuit is fixed and stable at each set flow rate.

[0045] In other embodiments, the first engaging portion 600 and the second engaging portion 402 may be a boss, a retaining ring, or a thickened shoulder. When the oil injection line 400 moves axially along the mounting groove until the oil injection line 400 is fully pushed into the mounting groove, the nozzle 500 and the oil outlet 401 reach the "fully open" position with the maximum number or area of ​​alignment. At this time, the first engaging portion 600 and the second engaging portion 402 engage, creating a clear mechanical blockage that prevents the oil injection line 400 from continuing to move in that direction.

[0046] This arrangement provides reliable mechanical safety limits, ensuring that the alignment of the structure is defined and protected in the most critical fully open position, thus improving the safety of the oil supply system.

[0047] To optimize the above technical solution, the oil supply device also includes an alarm module, which is electrically connected to the control module. When the bearing temperature data reaches the preset upper limit value and the oil supply pressure of the oil injection module reaches the preset upper limit value, the alarm module outputs an alarm signal to the control module.

[0048] Specifically, the alarm module can output sound or light signals to send clear alarm information to the operator.

[0049] During operation, the control module continuously monitors the bearing temperature data transmitted from the monitoring module and the oil supply pressure from the oil injection module. The control module presets a safe upper limit for bearing temperature and a working upper limit for oil supply pressure. When the control module's logic determines that the bearing temperature has reached or exceeded the safe upper limit, and the oil supply pressure has also reached the working upper limit (indicating that the oil supply device is supplying oil at full capacity but still cannot cool the bearing), it is considered a dangerous operating condition. At this time, the control module immediately triggers the alarm module, causing it to output an alarm signal, thereby improving the safety of the oil supply device.

[0050] To optimize the above technical solution, the monitoring module includes a temperature sensor and a shaft displacement monitor. The temperature sensor is used to monitor the temperature of the bearing shell 300 and output the shell temperature data to the control module. The shaft displacement monitor is used to monitor the axial displacement direction of the compressor rotor and output the displacement direction data to the control module. The control module is configured to: control the oil outlet to adjust the oil output according to the shell temperature data, and determine whether the oil injection module injects oil to the main thrust side or the auxiliary thrust side of the bearing according to the displacement direction data.

[0051] Specifically, the temperature sensor is directly embedded or attached to the bearing bush 300 to sense its thermal state, and the shaft displacement monitor is installed in the bearing housing 100 to measure the direction and magnitude of the instantaneous axial displacement of the compressor rotor (main shaft 700) in a non-contact, high-precision manner.

[0052] During operation, the temperature sensor and shaft displacement monitor work continuously. The control module receives not only bearing temperature data but also displacement direction data in real time. For example, when the shaft displacement monitor detects that the rotor is continuously moving towards the main thrust side, even if the temperature of the main thrust side bearing 300 has not yet risen significantly (or is delayed due to thermal inertia), the control module can predict that the load on the main thrust side bearing is increasing. Based on this information, the control module can adjust the oil supply command to the lubrication point on the main thrust side in advance or more proactively (such as increasing the oil supply pressure or flow rate) to achieve predictive protection.

[0053] This arrangement allows for dynamic distribution and adjustment of lubricating oil volume between the main and auxiliary thrust sides based on the actual thrust direction, ensuring real-time matching between lubricating oil supply and mechanical load distribution, thus improving overall energy efficiency. Furthermore, the control module can respond more quickly to changes in operating conditions, enabling proactive tracking of bearing load and effectively improving control accuracy and timeliness.

[0054] See Figure 1 This application embodiment also provides a thrust bearing 200, including two oil supply devices as described above, and the two oil supply devices are respectively disposed on the main thrust side and the auxiliary thrust side of the thrust bearing 200. The oil supply devices are used to provide adjustable lubricating oil to the bearing shell 300 on the main thrust side or the auxiliary thrust side. The thrust bearing 200 is used to be installed on the compressor to bear the axial thrust of the compressor rotor.

[0055] Specifically, the thrust bearing 200 is installed in the compressor, with its main shaft 700 passing through it. When the compressor is running, both lubrication systems operate simultaneously. Their respective monitoring modules (temperature sensors and a shared shaft displacement monitor) collect data and send it to the control module. Based on the bearing temperature and displacement direction, the control module independently issues different control commands to the adjustment modules of the main thrust-side and auxiliary thrust-side lubrication systems, respectively. This achieves independent, precise, and differentiated lubrication supply to the bearing shells 300 on both sides to cope with the bidirectional axial thrust of the rotor. This process achieves independent control on both sides, ensuring optimal lubrication and cooling on the stressed side under any thrust direction, while maintaining an economical oil level on the unstressed side, thus improving the economic performance of the lubrication system.

[0056] To optimize the above technical solution, the control module is used to execute the adjustment method, which includes: when the displacement direction data indicates that the rotor moves towards the main push side and the bearing temperature data of the main push side exceeds the first threshold, controlling the adjustment module of the oil supply device of the main push side to increase the oil output; when the displacement direction data indicates that the rotor moves towards the auxiliary push side and the bearing temperature data of the auxiliary push side exceeds the second threshold, controlling the adjustment module of the oil supply device of the auxiliary push side to increase the oil output.

[0057] Specifically, the first threshold and the second threshold can be the same, or they can be set separately according to the design load differences between the main thruster and the auxiliary thruster.

[0058] The specific structure of the oil supply device is as described in the above embodiments. Since the thrust bearing 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here.

[0059] It should be noted that the oil supply device and thrust bearing provided by this invention can be used in the field of thrust bearing equipment technology or other fields. Other fields refer to any field other than the field of thrust bearing equipment technology. The above are merely examples and do not limit the application areas of the oil supply device and thrust bearing provided by this invention.

[0060] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0061] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0062] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An oil supply device, characterized in that, The system includes an oil injection module, a control module, an adjustment module, and a monitoring module. The oil injection module is installed in the bearing housing. The adjustment module includes an oil inlet and an oil outlet. The oil injection module is connected to the oil inlet to supply oil to the adjustment module. The bearing housing contains a bearing bush. The monitoring module monitors the temperature of the bearing bush and outputs the bearing bush temperature data to the control module. The oil outlet is connected to the bearing bush, and the control module controls the oil outlet to adjust the oil output based on the bearing bush temperature data.

2. The oil supply device according to claim 1, characterized in that, The oil injection module includes an oil injection pipeline. The bearing housing has a mounting groove opened radially. The oil injection pipeline is disposed inside the mounting groove. The first end of the oil injection pipeline is used to connect to the oil supply station, and the second end of the oil injection pipeline is connected to the oil inlet.

3. The oil supply device according to claim 2, characterized in that, The oil inlet is formed by the enclosure between the mounting groove and the second end of the oil injection pipe. The oil inlet includes an oil storage chamber. The oil outlet includes an oil outlet pipe. The bearing housing is equipped with a bearing. The first end of the oil outlet pipe is fixedly connected to the bearing and communicates with the oil storage chamber. The second end of the oil outlet pipe is connected to the bearing bush. The oil outlet pipe is equipped with a one-way valve.

4. The oil supply device according to claim 2, characterized in that, The second end of the oil injection pipeline is provided with at least one oil outlet hole along the radial direction of the oil injection pipeline. The oil outlet includes at least one oil nozzle. The oil injection pipeline is movable along the axial direction inside the mounting groove so that at least one oil outlet hole is connected to at least one oil nozzle.

5. The oil supply device according to claim 4, characterized in that, The oil outlet section includes two or more of the aforementioned fuel injectors, and the two or more of the aforementioned fuel injectors are arranged in parallel.

6. The oil supply device according to claim 4, characterized in that, The mounting groove has a first engaging part on its wall and the oil injection pipe has a second engaging part on its outer wall. When the first engaging part engages with the second engaging part, the oil outlet and the fuel injector are connected in a one-to-one correspondence.

7. The oil supply device according to claim 1, characterized in that, It also includes an alarm module, which is electrically connected to the control module. When the bearing temperature data reaches a preset upper limit value and the oil supply pressure of the oil injection module reaches a preset upper limit value, the alarm module outputs an alarm signal to the control module.

8. The oil supply device according to any one of claims 1 to 7, characterized in that, The monitoring module includes a temperature sensor and a shaft displacement monitor. The temperature sensor is used to monitor the temperature of the bearing and output bearing temperature data to the control module. The shaft displacement monitor is used to monitor the axial displacement direction of the compressor rotor and output displacement direction data to the control module. The control module is configured to: control the oil outlet to adjust the oil output according to the bearing temperature data, and determine whether the oil injection module injects oil into the main thrust side or the auxiliary thrust side of the bearing according to the displacement direction data.

9. A thrust bearing, characterized in that, It includes two oil supply devices as described in any one of claims 1 to 8, wherein the two oil supply devices are respectively disposed on the main thrust side and the auxiliary thrust side of the thrust bearing, the oil supply devices being used to provide adjustable lubricating oil to the bearing bush on the main thrust side or the auxiliary thrust side, and the thrust bearing being used to be mounted on the compressor to bear the axial thrust of the compressor rotor.

10. The thrust bearing according to claim 9, characterized in that, The control module is used to execute an adjustment method, the adjustment method including: When the displacement direction data indicates that the rotor moves toward the main thrust side, and the bearing temperature data of the main thrust side exceeds the first threshold, the adjustment module of the oil supply device on the main thrust side is controlled to increase the oil output; when the displacement direction data indicates that the rotor moves toward the auxiliary thrust side, and the bearing temperature data of the auxiliary thrust side exceeds the second threshold, the adjustment module of the oil supply device on the auxiliary thrust side is controlled to increase the oil output.

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