Lubricating oil system control method and device of compressor unit and readable storage medium

Abstract

The invention belongs to the field of compressor stations, and discloses a lubricating oil system control method and device of a compressor unit and a readable storage medium. The lubricating oil system control method comprises the steps that in the starting process of a compressor unit, a lubricating oil system is automatically switched from a cold standby state to a hot standby state; during hot standby of the compressor unit, the lubricating oil system selects different cooling working durations according to the working condition of the compressor unit before shutdown; and after the compressor unit is shut down, the lubricating oil system is automatically switched to use the first oil pump or the second oil pump according to the oil pump switching condition and the oil pump working duration. According to the lubricating oil system control method, independent manual starting and manual misoperation are avoided, the waiting time of restarting of the compressor unit is shortened, then the problem that the lubricating oil system control method of the compressor unit is unreasonable is solved, and the effects of reducing manual operation factors, improving the automation degree and improving the operation efficiency of the compressor unit are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of gas compressor stations, and in particular to a method and device for controlling a lubricating oil system of a compressor unit, and a readable storage medium. Background Art

[0002] A compressor station is a station equipped with natural gas boosting equipment, usually equipped with multiple compressor units connected to the natural gas pipeline network. The compressor unit is generally equipped with a lubricating oil system mainly used for lubrication and cooling of the unit. The lubricating oil system generally includes a lubricating oil tank, a main oil pump and a standby oil pump.

[0003] In the prior art, when the compressor unit is started, each component of the lubricating oil system needs to be manually started separately, and the entire operation process requires human participation and monitoring, which is time-consuming, labor-intensive, and inefficient. At the same time, due to the negligence of the operator, the main oil pump or the backup oil pump is operated alone for a long time, affecting the equipment integrity of the lubricating oil system. After the compressor unit is shut down, the lubricating oil system is shut down with a timer delay. Regardless of the working condition of the compressor unit, the cooling working time of the lubricating oil system is fixed, which prolongs the waiting time for the compressor unit to start again. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a lubricating oil system control method, device and readable storage medium for a compressor unit, which are used to solve the problem of unreasonable lubricating oil system control method for the compressor unit, so as to reduce human operation factors, improve the degree of automation, and improve the operating efficiency of the compressor unit.

[0005] In order to achieve the above-mentioned object, the first aspect of the present application provides a method for controlling a lubricating oil system of a compressor unit, comprising:

[0006] During the compressor unit startup process, the lubricating oil system automatically switches from cold standby to hot standby;

[0007] After the compressor unit is shut down, the lubricating oil system selects different cooling working times according to the working conditions of the compressor unit before the shutdown;

[0008] When the compressor unit is in hot standby, the lubricating oil system automatically switches to use the first oil pump or the second oil pump according to the oil pump switching conditions and the oil pump working time.

[0009] In some embodiments, the lubricating oil system switches from a cold standby state to a hot standby state, including: first starting the oil tank heater to heat the lubricating oil, and when the temperature of the lubricating oil in the oil tank is greater than a preset oil temperature, starting the first oil pump or the second oil pump.

[0010] In some embodiments, the operating conditions of the compressor unit include:

[0011] In the first operating condition, the timing control is activated, the inverter is not running, and the unit speed is less than the minimum speed;

[0012] The second operating condition is that the timing control is activated, the inverter is running, and the unit speed is less than the minimum speed; or the timing control is activated, the inverter is running, the unit speed is greater than or equal to the minimum speed, and the anti-surge valve is fully opened;

[0013] The third operating condition is that the timing control is activated, the inverter is running, the unit speed is greater than or equal to the minimum speed, and the anti-surge valve is partially opened;

[0014] Among them, under the first working condition, the cooling working time of the lubricating oil system is 0-5 minutes; under the second working condition, the cooling working time of the lubricating oil system is 10-20 minutes; under the third working condition, the cooling working time of the lubricating oil system is 25-35 minutes.

[0015] In some embodiments, the oil pump switching conditions include: the compressor unit is shut down, the compressor unit is not in the startup process, the speed of the compressor unit is less than or equal to the preset speed, the compressor unit does not trigger the ESD pressure maintenance shutdown, the compressor unit does not trigger the ESD pressure relief shutdown, the inverter stop time is greater than the preset stop time, and the lubricating oil system is in hot standby state;

[0016] When all the oil pump switching conditions are met and the oil pump working time is greater than or equal to the preset working time, the lubricating oil system automatically switches to use the first oil pump or the second oil pump.

[0017] In some embodiments, the lubricating oil system control method also includes: during the startup process of the compressor unit, the lubricating oil system verifies the first group of jacking pumps and the second group of jacking pumps, and the lubricating oil system automatically switches to use the first group of jacking pumps or the second group of jacking pumps in a single rotation manner.

[0018] In some embodiments, the lubricating oil system control method further includes:

[0019] When the ambient temperature is lower than the preset temperature, the oil cooling fan can only be started and stopped manually;

[0020] When the ambient temperature is greater than or equal to the preset temperature, the oil cooling fan automatically starts and runs at a variable speed according to the increase in the temperature of the lubricating oil.

[0021] In some embodiments, the lubricating oil system control method further includes: after the main compressor unit is started, the lubricating oil system of the standby compressor unit automatically switches from a cold standby state to a hot standby state.

[0022] A second aspect of the present application provides a lubricating oil system control device for a compressor unit, comprising:

[0023] a memory configured to store instructions;

[0024] The processor is configured to call the instructions from the memory and implement the above-mentioned lubricating oil system control method when executing the instructions.

[0025] In some embodiments, the lubricating oil system control device further includes a human-machine exchange interface for graphically displaying the operating status of the lubricating oil system and manually switching the cold standby state and the hot standby state of the lubricating oil system.

[0026] A third aspect of the present application provides a readable storage medium, on which instructions are stored, and the instructions are used to enable a machine to execute the above-mentioned lubricating oil system control method.

[0027] Compared with the prior art, the beneficial effects of this application are:

[0028] The present application automatically switches the lubricating oil system from the cold standby state to the hot standby state, adaptively changes the cooling working time, and automatically switches the first oil pump and the second oil pump at a regular interval, thereby avoiding manual startup and human error, shortening the waiting time for the compressor unit to start again, and thus solving the problem of unreasonable control method of the lubricating oil system of the compressor unit, thereby achieving the effect of reducing human operation factors, improving the degree of automation, and improving the operating efficiency of the compressor unit.

[0029] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:

[0031] Figure 1 The diagram schematically shows an interface view of a human-machine interaction interface of a lubricating oil system control device according to an embodiment of the present application in a certain state. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme 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. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application. 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.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0034] The embodiment of the present application provides a method for controlling a lubricating oil system of a compressor unit, comprising:

[0035] During the compressor unit startup process, the lubricating oil system automatically switches from cold standby to hot standby;

[0036] After the compressor unit is shut down, the lubricating oil system selects different cooling working times according to the working conditions of the compressor unit before the shutdown;

[0037] When the compressor unit is in hot standby, the lubricating oil system automatically switches to use the first oil pump or the second oil pump according to the oil pump switching conditions and the oil pump working time.

[0038] like Figure 1 As shown, in the present application, the lubricating oil system generally includes: a lubricating oil tank storing lubricating oil, a first oil pump and a second oil pump for pumping the lubricating oil, an oil tank heater for heating the lubricating oil, a smoke exhaust fan for exhausting the oil fume inside the lubricating oil tank, an oil cooling fan for cooling the lubricating oil, and a lubricating pipeline for circulating the lubricating oil. The lubricating oil system also adds a control device that electrically connects the various components. The control device is configured with a control program, including a cold standby program and a hot standby program. The cold standby state, that is, the various components of the lubricating oil system are in a standby state; the hot standby state, that is, the various components of the lubricating oil system are in a working state, and the lubricating oil system can provide lubricating oil with a certain pressure and temperature to the outside.

[0039] In the present application, during the startup process of the compressor unit, the control device runs the hot standby program to automatically switch the lubricating oil system from the cold standby state to the hot standby state without the need for a separate manual start. After the compressor unit is shut down, the control device selects different cooling working times according to the working conditions of the compressor unit before the shutdown, so that the cooling working time of the lubricating oil system can be adaptively changed, such as: the working time of the compressor unit is directly proportional to the cooling working time. The shorter the working time of the compressor unit, the shorter the cooling working time; thereby shortening the average waiting time for the compressor unit to start again. After the compressor unit is shut down, the control device automatically switches the first oil pump or the second oil pump for the next operation according to the oil pump switching conditions and the oil pump working time, ensuring that the first oil pump and the second oil pump are used in turn to avoid long-term single operation of the first oil pump or the second oil pump. The present application automatically switches the lubricating oil system from the cold standby state to the hot standby state, adaptively changes the cooling working time, and automatically switches the first oil pump and the second oil pump at a regular interval, thereby avoiding manual startup and human error, shortening the waiting time for the compressor unit to start again, and thus solving the problem of unreasonable control method of the lubricating oil system of the compressor unit, thereby achieving the effect of reducing human operation factors, improving the degree of automation, and improving the operating efficiency of the compressor unit.

[0040] In some embodiments, the lubricating oil system has three working modes, mode 1 is a state where the oil pump is prohibited from automatically patrolling and switching, mode 2 is a state where the oil pump can patrol periodically according to the operating time, and mode 3 is a state where the host computer can manually "switch between hot and cold standby with one button".

[0041] Specifically, the lubricating oil system switches from the cold standby state to the hot standby state by first starting the oil tank heater to heat the lubricating oil, and when the temperature of the lubricating oil in the oil tank is greater than the preset oil temperature, the first oil pump or the second oil pump is started. The preset oil temperature can be 22°C, at which time the oil film formed by the lubricating oil has better rigidity.

[0042] In some embodiments, the control program of the lubricating oil system includes the judgment of the main oil pump and the backup oil pump. When the first oil pump is the main oil pump and the second oil pump is the backup oil pump, if the oil pump switching condition and the oil pump working time are met, the control program sets the first oil pump as the backup oil pump and the second oil pump as the main oil pump, and vice versa. That is, the control program always starts the main oil pump every time.

[0043] In some embodiments, the control device of the lubricating oil system receives the start-up command of the compressor unit, and then runs the hot standby program, so that the lubricating oil system automatically switches from the cold standby state to the hot standby state, the oil tank heater continues to work, the first oil pump or the second oil pump continues to work, and when the temperature of the lubricating oil in the oil tank is greater than 35°C and the rear isolation gas is greater than 0.3Mpa, the control device activates the timing control of the compressor unit, and then completes the start-up process of the compressor unit. During the entire start-up process, only the start-up command of the compressor unit needs to be issued, which greatly reduces the human participation link, reduces the risk of misoperation, and greatly improves the operating efficiency of the compressor unit.

[0044] Specifically, the operating conditions of the compressor unit include:

[0045] In the first operating condition, the timing control is activated, the inverter is not running, and the unit speed is less than the minimum speed;

[0046] The second operating condition is that the timing control is activated, the inverter is running, and the unit speed is less than the minimum speed; or the timing control is activated, the inverter is running, the unit speed is greater than or equal to the minimum speed, and the anti-surge valve is fully opened;

[0047] The third operating condition is that the timing control is activated, the inverter is running, the unit speed is greater than or equal to the minimum speed, and the anti-surge valve is partially opened;

[0048] Among them, under the first working condition, the cooling working time of the lubricating oil system is 0-5 minutes; under the second working condition, the cooling working time of the lubricating oil system is 10-20 minutes; under the third working condition, the cooling working time of the lubricating oil system is 25-35 minutes.

[0049] In this application, after the compressor unit is shut down, the lubricating oil system needs to delay working to fully cool the compressor unit and the lubricating oil to ensure the safety of the equipment. After the cooling work of the lubricating oil system is completed, it is usually automatically switched to the cold standby state. Under the first working condition, the impeller of the compressor unit is not working, the compressor unit does not generate obvious heat, and the temperature of the lubricating oil is normal. For this, the cooling working time of the lubricating oil system is 0-5 minutes. Under the second working condition, the impeller work power of the compressor unit is small, the heat generated by the compressor unit is small, and the temperature increase of the lubricating oil is small. For this, the cooling working time of the lubricating oil system is 10-20 minutes. Under the third working condition, the impeller work power of the compressor unit is large, the heat generated by the compressor unit is large, and the temperature increase of the lubricating oil is large. For this, the cooling working time of the lubricating oil system is 25-35 minutes. The control device reasonably selects the corresponding cooling working time according to the working condition of the compressor unit before the shutdown, so that the cooling working time of the lubricating oil system corresponds to the actual cooling demand of the compressor unit, thereby shortening the average waiting time for the compressor unit to start again, and improving the operating efficiency of the compressor unit.

[0050] In some embodiments, after the compressor unit shuts down, under the first operating condition, the lubricating oil system immediately switches to the cold standby state; under the second operating condition, the cooling working time of the lubricating oil system is 15 minutes, and then it switches to the cold standby state; under the third operating condition, the cooling working time of the lubricating oil system is 30 minutes, and then it switches to the cold standby state.

[0051] Specifically, the oil pump switching conditions include: the compressor unit is shut down, the compressor unit is not in the startup process, the speed of the compressor unit is less than or equal to the preset speed, the compressor unit has not triggered the ESD pressure maintenance shutdown, the compressor unit has not triggered the ESD pressure relief shutdown, the inverter stop time is greater than the preset stop time, and the lubricating oil system is in hot standby state; among them, when all the oil pump switching conditions are met and the oil pump working time is greater than or equal to the preset working time, the lubricating oil system automatically switches to use the first oil pump or the second oil pump. The preset speed can be 5rpm, the preset stop time can be 3min, and the preset working time can be 7 days.

[0052] In this application, the oil pump switching needs to be done after the compressor unit is shut down to avoid the oil pressure change shock of the lubricating oil when the oil pump is switched, which affects the normal operation of the compressor unit; at the same time, the lubricating oil system needs to be in hot standby state to verify that the lubricating oil system can output lubricating oil as required after the oil pump is switched. The control device counts the working time of the first oil pump or the second oil pump. When the working time of the oil pump is greater than or equal to the preset working time and all the oil pump switching conditions are met, the control device sends a signal and safely switches the first oil pump or the second oil pump, so as to realize the regular patrol use of the first oil pump or the second oil pump, avoid the long-term single operation of the oil pump, and improve the equipment integrity of the lubricating oil system.

[0053] Specifically, the lubricating oil system control method also includes: during the startup process of the compressor unit, the lubricating oil system verifies the first group of jacking pumps and the second group of jacking pumps, and the lubricating oil system automatically switches to use the first group of jacking pumps or the second group of jacking pumps in a single rotation manner.

[0054] In the present application, when the main shaft speed of the compressor unit is low, additional pressurization is required through the jacking pump of the lubricating oil system to jack up the main shaft to avoid damage to the main shaft bearings. The jacking pump generally includes a first group of jacking pumps and a second group of jacking pumps. The control device can determine whether the jacking pump is working properly by briefly starting and stopping the jacking pump and obtaining the outlet oil pressure of the jacking pump, thereby improving the reliability of the jacking pump. Each time the compressor unit is started, the control device switches the first group of jacking pumps and the second group of jacking pumps to be used in turn, such as: the first group of jacking pumps was used last time, and the second group of jacking pumps will be used next time; thereby balancing the use time of the jacking pumps and improving the reliability of the jacking pumps.

[0055] In some embodiments, the control program of the lubricating oil system includes a judgment of the first group of jacking pumps and the second group of jacking pumps. When the first group of jacking pumps is the main jacking pump and the second group of jacking pumps is the standby jacking pump, after the jacking pumps stop, the control program sets the first group of jacking pumps as the standby jacking pump and the second group of jacking pumps as the main jacking pump, and vice versa. That is, the control program always starts the main jacking pump each time.

[0056] Specifically, the lubricating oil system control method further includes:

[0057] When the ambient temperature is lower than the preset temperature, the oil cooling fan can only be started and stopped manually;

[0058] When the ambient temperature is greater than or equal to the preset temperature, the oil cooling fan automatically starts and runs at a variable speed according to the increase in the temperature of the lubricating oil.

[0059] In the present application, an oil cooler is provided on the lubrication pipeline of the lubricating oil system, and an oil cooling fan is provided on the oil cooler. The oil cooling fan has an automatic control mode of oil temperature-speed. When the temperature of the lubricating oil in the oil cooler is greater than or equal to the temperature threshold, the control device automatically starts the oil cooling fan and sets the oil cooling fan speed corresponding to the temperature of the lubricating oil. The oil cooling fan reduces the temperature of the lubricating oil to keep it near the temperature threshold. When the ambient temperature is lower than the preset temperature, the lubricating oil will condense in the oil cooler. If the oil cooling fan is automatically started again, the temperature of the lubricating oil will be further reduced, causing the lubricating oil to solidify and wax, and the oil return will be poor, which will lead to an abnormal increase in the oil supply temperature and a risk of shutdown. Therefore, when the ambient temperature is lower than the preset temperature, the control device turns off the automatic control mode of the oil cooling fan, and the oil cooling fan can only be started and stopped manually; when the ambient temperature is greater than or equal to the preset temperature, the control device restores the automatic control mode of the oil cooling fan; thereby improving the effectiveness of the oil cooling fan cooling. The preset temperature can be -10°C. The temperature threshold can be 45°C.

[0060] Specifically, the lubricating oil system control method further includes: after the main compressor unit is started, the lubricating oil system of the standby compressor unit automatically switches from a cold standby state to a hot standby state.

[0061] In this application, a compressor station is usually equipped with multiple compressor units, which are divided into a main compressor unit and several standby compressor units according to the priority of starting. The lubricating oil systems of compressor units in different groups communicate with each other. After the main compressor unit is started, the lubricating oil system of the next standby compressor unit that needs to be started automatically switches from the cold standby state to the hot standby state, so that the standby compressor unit can be started faster when needed, increasing the total power of the compressor unit; at the same time, the whole process does not require human intervention, reducing the workload of operation and maintenance personnel and improving the working efficiency of the compressor station.

[0062] In some embodiments, taking four groups of compressor units with priorities 1 to 4 as an example, when the compressor station is working, the compressor units with priorities 1 and 2 are always automatically switched to hot standby status; after the compressor unit with priority 1 is started, the compressor units with priorities 2 and 3 are automatically switched to hot standby status; after the compressor units with priorities 1 and 2 are started, the compressor units with priorities 3 and 4 are automatically switched to hot standby status.

[0063] The present application also provides a lubricating oil system control device for a compressor unit, comprising:

[0064] a memory configured to store instructions;

[0065] The processor is configured to call instructions from the memory and implement the above-mentioned lubricating oil system control method when executing the instructions.

[0066] In the present application, the lubricating oil system control device improves the automation level of the daily maintenance of the lubricating oil system, does not require a large amount of human participation, is simple to operate, and avoids human error. Furthermore, the lubricating oil system control device can flexibly adjust the cooling working time of the lubricating oil system and shorten the waiting time for the compressor unit to start again. Furthermore, the lubricating oil system control device can automatically switch the first oil pump and the second oil pump regularly to avoid long-term operation of a single oil pump and improve the equipment integrity of the lubricating oil system. Furthermore, the lubricating oil system control device can verify the jacking pump and automatically switch the first group of jacking pumps and the second group of jacking pumps to balance the use time of the jacking pumps and improve the reliability of the jacking pumps. Finally, the lubricating oil system control device can automatically adjust the working mode of the oil cooling fan according to the ambient temperature to improve the effectiveness of the oil cooling fan cooling.

[0067] In some embodiments, the lubricating oil system further comprises an emergency oil pump for emergency pumping of lubricating oil. The motor of the compressor unit is provided with a motor heater and a motor external cooling system. The lubricating oil system control device is further configured to control the start and stop of the emergency pump, the smoke exhaust fan, the motor heater and the motor external cooling system and the start and stop failure alarm.

[0068] like Figure 1 As shown, specifically, the lubricating oil system control device also includes a human-machine exchange interface for graphically displaying the operating status of the lubricating oil system and manually switching the cold standby state and the hot standby state of the lubricating oil system.

[0069] In some embodiments, the human-machine exchange interface is provided with an "oil system cold standby" button and an "oil system hot standby" button, so that the cold standby state and hot standby state of the lubricating oil system can be switched with one button, without manually operating each component of the lubricating oil system one by one, which improves the work efficiency of the operation and maintenance personnel. Furthermore, the human-machine exchange interface is also provided with an "oil system cold standby and hot standby switching prohibited" frame. After the compressor unit is started, the "oil system cold standby and hot standby switching prohibited" frame lights up in red, and the operation of the "oil system cold standby" button and the "oil system hot standby" button is invalid. Otherwise, it lights up in green, and the operation of the "oil system cold standby" button and the "oil system hot standby" button is valid.

[0070] An embodiment of the present application also provides a readable storage medium, on which instructions are stored, and the instructions are used to enable a machine to execute the above-mentioned lubricating oil system control method.

[0071] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0072] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0073] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0074] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0075] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0076] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0077] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0078] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0079] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A method for controlling a lubricating oil system of a compressor unit, characterized in that: The lubricating oil system control method comprises: During the compressor unit startup process, the lubricating oil system automatically switches from cold standby to hot standby; After the compressor unit is shut down, the lubricating oil system selects different cooling working times according to the working conditions of the compressor unit before the shutdown; When the compressor unit is in hot standby, the lubricating oil system automatically switches to use the first oil pump or the second oil pump according to the oil pump switching conditions and the oil pump working time.

2. The lubricating oil system control method according to claim 1, characterized in that: The lubricating oil system switches from a cold standby state to a hot standby state, comprising: first starting the oil tank heater to heat the lubricating oil, and when the temperature of the lubricating oil in the oil tank is greater than a preset oil temperature, starting the first oil pump or the second oil pump.

3. The lubricating oil system control method according to claim 1, characterized in that: The operating conditions of the compressor unit include: In the first operating condition, the timing control is activated, the inverter is not running, and the unit speed is less than the minimum speed; The second operating condition is that the timing control is activated, the inverter is running, and the unit speed is less than the minimum speed; or the timing control is activated, the inverter is running, the unit speed is greater than or equal to the minimum speed, and the anti-surge valve is fully opened; The third operating condition is that the timing control is activated, the inverter is running, the unit speed is greater than or equal to the minimum speed, and the anti-surge valve is partially opened; Among them, under the first working condition, the cooling working time of the lubricating oil system is 0-5 minutes; under the second working condition, the cooling working time of the lubricating oil system is 10-20 minutes; under the third working condition, the cooling working time of the lubricating oil system is 25-35 minutes.

4. The lubricating oil system control method according to claim 1, characterized in that: The oil pump switching conditions include: the compressor unit is shut down, the compressor unit is not in the startup process, the speed of the compressor unit is less than or equal to the preset speed, the compressor unit has not triggered the ESD pressure maintenance shutdown, the compressor unit has not triggered the ESD pressure relief shutdown, the inverter stop time is greater than the preset stop time, and the lubricating oil system is in hot standby state; Among them, when all the oil pump switching conditions are met and the oil pump working time is greater than or equal to the preset working time, the lubricating oil system automatically switches to use the first oil pump or the second oil pump.

5. The lubricating oil system control method according to any one of claims 1 to 4, characterized in that: The lubricating oil system control method also includes: during the startup process of the compressor unit, the lubricating oil system verifies the first group of jacking pumps and the second group of jacking pumps, and the lubricating oil system automatically switches to use the first group of jacking pumps or the second group of jacking pumps in a single rotation manner.

6. The lubricating oil system control method according to any one of claims 1 to 4, characterized in that: The lubricating oil system control method further comprises: When the ambient temperature is lower than the preset temperature, the oil cooling fan can only be started and stopped manually; When the ambient temperature is greater than or equal to the preset temperature, the oil cooling fan automatically starts and runs at a variable speed according to the increase in the temperature of the lubricating oil.

7. The lubricating oil system control method according to any one of claims 1 to 4, characterized in that: The lubricating oil system control method further includes: after the main compressor unit is started, the lubricating oil system of the standby compressor unit automatically switches from a cold standby state to a hot standby state.

8. A lubricating oil system control device for a compressor unit, characterized in that: The lubricating oil system control device comprises: a memory configured to store instructions; A processor is configured to call the instructions from the memory and implement the lubricating oil system control method according to any one of claims 1 to 7 when executing the instructions.

9. The lubricating oil system control device according to claim 8, characterized in that: The lubricating oil system control device also includes a human-machine exchange interface for graphically displaying the operating status of the lubricating oil system and manually switching the cold standby state and the hot standby state of the lubricating oil system.

10. A readable storage medium, characterized in that: The readable storage medium stores instructions for causing a machine to execute the lubricating oil system control method according to any one of claims 1 to 7.

Images