State monitoring method and device for steam compressor

Abstract

The invention discloses a state monitoring method and device for a steam compressor. The state monitoring method comprises the steps that current state data of the steam compressor are obtained; determining whether the state data meets a starting condition or not; if the starting condition is met, the steam compressor is started; acquiring monitoring data of the steam compressor; determining whether the monitoring data meets a protection shutdown condition or not; if the shutdown protection condition is met, it is determined that shutdown protection operation is executed. According to the state data and the monitoring data of the steam compressor, whether the steam compressor is normally started or shut down for protection or not is determined, so that the steam compressor is protected, and performance reduction and even faults of the steam compressor are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of compressor protection, and in particular to a method and device for monitoring the state of a steam compressor. Background Art

[0002] Existing steam compressors are widely used in industrial production. Among them, it is necessary to monitor the status of steam compressors to ensure that the steam compressors can be started or shut down normally to protect the steam compressors and avoid performance degradation or even failure of the steam compressors. Based on this, how to monitor steam compressors has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the present invention proposes a steam compressor status monitoring method, which can determine whether the steam compressor is started normally or shut down for protection through the status data and monitoring data of the steam compressor, thereby protecting the steam compressor and avoiding performance degradation or even failure of the steam compressor.

[0005] Another object of the present invention is to provide a condition monitoring device for a steam compressor.

[0006] To achieve the above object, the present invention provides a method for monitoring the state of a steam compressor, the method comprising:

[0007] Get the current status data of the steam compressor;

[0008] Determining whether the status data satisfies a start condition;

[0009] If the starting condition is met, starting the steam compressor;

[0010] Acquiring monitoring data of the steam compressor;

[0011] Determining whether the monitoring data meets the protection shutdown condition;

[0012] If the protection shutdown condition is met, it is determined to execute the shutdown protection operation.

[0013] The steam compressor condition monitoring method according to the embodiment of the present invention may also have the following additional technical features:

[0014] In one embodiment of the present invention, the status data includes:

[0015] Inverter signal;

[0016] Steam compressor oil tank temperature;

[0017] Main motor downtime;

[0018] Auxiliary oil pump remote control status;

[0019] Remote control status of main motor cooling fan;

[0020] Oil mist fan remote control status;

[0021] Fuel tank heater remote control status;

[0022] Machine seal water pump operation signal;

[0023] Circulation pump running signal;

[0024] Anti-surge valve opening.

[0025] In one embodiment of the present invention, the start condition includes:

[0026] The inverter signal is a signal that the inverter has no fault;

[0027] The steam compressor oil tank temperature is greater than the first temperature;

[0028] The main motor downtime is longer than the first time;

[0029] The remote control status of the auxiliary oil pump is arrival;

[0030] The remote control status of the main motor cooling fan is reached;

[0031] The remote control status of the oil mist fan is arrival;

[0032] The remote control status of the fuel tank heater is arrival;

[0033] The running signal of the machine seal water pump is running;

[0034] The circulation pump operation signal is running;

[0035] The anti-surge valve opening feedback is greater than the preset threshold.

[0036] In one embodiment of the present invention, the monitoring data includes:

[0037] Auxiliary oil pump running time;

[0038] Inverter operation feedback signal;

[0039] Lubricating oil station gearbox inlet oil pressure and delay time;

[0040] Steam compressor motor winding temperature and delay time;

[0041] Steam compressor motor front bearing temperature and delay time;

[0042] Steam compressor motor rear bearing temperature and delay time;

[0043] Steam compressor front bearing temperature and signal;

[0044] Steam compressor rear bearing temperature and signal;

[0045] Steam compressor thrust bearing temperature and signal;

[0046] Oil supply temperature and delay time of steam compressor lubricating oil station.

[0047] In one embodiment of the present invention, the protection shutdown condition includes:

[0048] The auxiliary oil pump runs for the second time or the inverter operation feedback signal arrives, the lubricating oil station gearbox inlet oil pressure is less than the preset pressure and the delay time is the third time;

[0049] The steam compressor motor winding temperature is greater than the second temperature and the delay time is the third time;

[0050] The temperature of the front bearing of the steam compressor motor is greater than the third temperature and the delay time is the third time;

[0051] The temperature of the rear bearing of the steam compressor motor is greater than the third temperature and the delay time is the third time;

[0052] The temperature of the front bearing of the steam compressor is greater than the fourth temperature or the signal is disconnected and the delay time is the third time;

[0053] The temperature of the rear bearing of the steam compressor is greater than the fourth temperature or the signal is disconnected and the delay time is the third time;

[0054] The temperature of the steam compressor thrust bearing is greater than the fourth temperature or the signal is disconnected and the delay time is the third time;

[0055] The oil supply temperature of the steam compressor lubricating oil station is greater than the fifth temperature and the delay time is the third time.

[0056] To achieve the above object, the present invention provides a steam compressor condition monitoring device on the other hand, the device comprising:

[0057] A first acquisition module, used to acquire current status data of the steam compressor;

[0058] A first determination module, used to determine whether the state data meets the start condition;

[0059] A starting module, used for starting the steam compressor if the starting condition is met;

[0060] A second acquisition module, used to acquire monitoring data of the steam compressor;

[0061] A second determination module is used to determine whether the monitoring data meets the protection shutdown condition;

[0062] The execution module is used to determine to execute the shutdown protection operation if the protection shutdown condition is met.

[0063] Another object of the present invention is to provide an electronic device, comprising:

[0064] at least one processor; and

[0065] a memory communicatively connected to the at least one processor; wherein,

[0066] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform any one of the methods described in the above aspect.

[0067] Another object of the present invention is to provide a computer storage medium, wherein the computer storage medium stores computer executable instructions; after the computer executable instructions are executed by a processor, the computer executes any one of the methods described in the above aspect.

[0068] The steam compressor status monitoring method and device of the embodiment of the present invention can determine whether the steam compressor is started normally or shut down for protection through the status data and monitoring data of the steam compressor, thereby protecting the steam compressor and avoiding performance degradation or even failure of the steam compressor.

[0069] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0071] Figure 1 is a flow chart of a method for monitoring a state of a steam compressor according to an embodiment of the present invention;

[0072] Figure 2 4 is a structural diagram of a steam compressor condition monitoring device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0073] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0074] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0075] The following describes a method and device for monitoring the state of a steam compressor according to an embodiment of the present invention with reference to the accompanying drawings.

[0076] Figure 1 4 is a flow chart of a method for monitoring the state of a steam compressor according to an embodiment of the present invention.

[0077] like Figure 1 As shown, the method includes:

[0078] S1, obtaining the current status data of the steam compressor;

[0079] In one embodiment of the present invention, the steam compressor may be an MVR steam compressor.

[0080] In one embodiment of the present invention, the current status data of the steam compressor may be acquired before the steam compressor is started.

[0081] In one embodiment of the present invention, the above-mentioned status data may include:

[0082] Inverter signal;

[0083] Steam compressor oil tank temperature;

[0084] Main motor downtime;

[0085] Auxiliary oil pump remote control status;

[0086] Remote control status of main motor cooling fan;

[0087] Oil mist fan remote control status;

[0088] Fuel tank heater remote control status;

[0089] Machine seal water pump operation signal;

[0090] Circulation pump running signal;

[0091] Anti-surge valve opening.

[0092] S2, determining whether the status data meets the start condition;

[0093] In one embodiment of the present invention, the above-mentioned starting conditions may include:

[0094] The inverter signal is a signal that the inverter has no fault;

[0095] The steam compressor oil tank temperature is greater than the first temperature;

[0096] The main motor downtime is longer than the first time;

[0097] The remote control status of the auxiliary oil pump is arrival;

[0098] The remote control status of the main motor cooling fan is reached;

[0099] The remote control status of the oil mist fan is arrival;

[0100] The remote control status of the fuel tank heater is arrival;

[0101] The running signal of the machine seal water pump is running;

[0102] The circulation pump operation signal is running;

[0103] The anti-surge valve opening feedback is greater than the preset threshold.

[0104] Furthermore, in one embodiment of the present invention, the first temperature and the first time can be determined based on manual experience. For example, the first temperature can be 15° C., and the first time can be 2 minutes.

[0105] Wherein, in one embodiment of the present invention, after the state data of the steam compressor is obtained through the above steps, it can be determined whether the obtained state data meets the corresponding start-up condition. For example, in one embodiment of the present invention, assuming that the obtained state data is the steam compressor oil tank temperature, it is determined whether the obtained steam compressor oil tank temperature is greater than the first temperature. If the steam compressor oil tank temperature is greater than the first temperature, the obtained steam compressor oil tank temperature meets the corresponding start-up condition.

[0106] And, in one embodiment of the present invention, if the above status data all meet the corresponding start-up conditions, it is determined that the status data meets the start-up conditions; if there is any of the above status data that does not meet the corresponding start-up conditions, it is determined that the status data does not meet the start-up conditions.

[0107] S3, if the starting conditions are met, the steam compressor is started;

[0108] S4, obtaining monitoring data of the steam compressor;

[0109] In one embodiment of the present invention, after the steam compressor is started, the monitoring data of the steam compressor can be periodically obtained. In one embodiment of the present invention, the period can be determined as needed, for example, 5 minutes.

[0110] And, in one embodiment of the present invention, the monitoring data may include:

[0111] Auxiliary oil pump running time;

[0112] Inverter operation feedback signal;

[0113] Lubricating oil station gearbox inlet oil pressure and delay time;

[0114] Steam compressor motor winding temperature and delay time;

[0115] Steam compressor motor front bearing temperature and delay time;

[0116] Steam compressor motor rear bearing temperature and delay time;

[0117] Steam compressor front bearing temperature and signal;

[0118] Steam compressor rear bearing temperature and signal;

[0119] Steam compressor thrust bearing temperature and signal;

[0120] Oil supply temperature and delay time of steam compressor lubricating oil station.

[0121] S5, determining whether the monitoring data meets the protection shutdown condition;

[0122] In one embodiment of the present invention, the above protection shutdown conditions may include:

[0123] The auxiliary oil pump runs for the second time or the inverter operation feedback signal arrives, the lubricating oil station gearbox inlet oil pressure is less than the preset pressure and the delay time is the third time;

[0124] The steam compressor motor winding temperature is greater than the second temperature and the delay time is the third time;

[0125] The temperature of the front bearing of the steam compressor motor is greater than the third temperature and the delay time is the third time;

[0126] The temperature of the rear bearing of the steam compressor motor is greater than the third temperature and the delay time is the third time;

[0127] The temperature of the front bearing of the steam compressor is greater than the fourth temperature or the signal is disconnected and the delay time is the third time;

[0128] The temperature of the rear bearing of the steam compressor is greater than the fourth temperature or the signal is disconnected and the delay time is the third time;

[0129] The temperature of the steam compressor thrust bearing is greater than the fourth temperature or the signal is disconnected and the delay time is the third time;

[0130] The oil supply temperature of the steam compressor lubricating oil station is greater than the fifth temperature and the delay time is the third time.

[0131] Furthermore, in one embodiment of the present invention, the above-mentioned preset pressure, second temperature, third temperature, fourth temperature, fifth temperature and second time, third time can be determined according to manual experience. For example, the preset pressure can be 110 kPa (kilopascals), the second temperature can be 145°C, the third temperature can be 95°C, the fourth temperature can be 100°C, the fifth temperature can be 60°C, the second time can be 60s, and the third time can be 1s.

[0132] Wherein, in one embodiment of the present invention, after the monitoring data is obtained through the above steps, it can be determined whether the monitoring data meets the corresponding protection shutdown condition. For example, in one embodiment of the present invention, assuming that the acquired monitoring data is the steam compressor motor front bearing temperature and delay time, it is determined whether the acquired steam compressor motor front bearing temperature is greater than the third temperature and the delay time reaches the third time. If the steam compressor motor front bearing temperature is greater than the third temperature and the delay time reaches the third time, the acquired steam compressor motor front bearing temperature and delay time meet the corresponding protection shutdown condition.

[0133] And, in one embodiment of the present invention, if the above monitoring data satisfies the corresponding protection shutdown conditions, it is determined that the monitoring data satisfies the protection shutdown conditions; if the above monitoring data does not satisfy the corresponding protection shutdown conditions, it is determined that the monitoring data does not satisfy the protection shutdown conditions.

[0134] S6: If the protection shutdown condition is met, determine to execute the shutdown protection operation.

[0135] In one embodiment of the present invention, after determining through the above steps that the monitoring data meets the protective shutdown condition, it can be determined to execute the shutdown protection operation.

[0136] The steam compressor status monitoring method and device of the embodiment of the present invention can determine whether the steam compressor is started normally or shut down for protection through the status data and monitoring data of the steam compressor, thereby protecting the steam compressor and avoiding performance degradation or even failure of the steam compressor.

[0137] In order to implement the above embodiment, Figure 2 As shown, this embodiment also provides a steam compressor state monitoring device 10, which includes:

[0138] The first acquisition module 201 is used to acquire the status data of the current steam compressor;

[0139] A first determination module 202, used to determine whether the status data meets the start condition;

[0140] A starting module 203 is used to start the steam compressor if the starting conditions are met;

[0141] A second acquisition module 204 is used to acquire monitoring data of the steam compressor;

[0142] The second determination module 205 is used to determine whether the monitoring data meets the protection shutdown condition;

[0143] The execution module 206 is used to determine to execute the shutdown protection operation if the protection shutdown condition is met. In one embodiment of the present invention, the above-mentioned state data includes:

[0144] Inverter signal;

[0145] Steam compressor oil tank temperature;

[0146] Main motor downtime;

[0147] Auxiliary oil pump remote control status;

[0148] Remote control status of main motor cooling fan;

[0149] Oil mist fan remote control status;

[0150] Fuel tank heater remote control status;

[0151] Machine seal water pump operation signal;

[0152] Circulation pump running signal;

[0153] Anti-surge valve opening.

[0154] Furthermore, in one embodiment of the present invention, the above-mentioned starting conditions include:

[0155] The inverter signal is a signal that the inverter has no fault;

[0156] The steam compressor oil tank temperature is greater than the first temperature;

[0157] The main motor downtime is longer than the first time;

[0158] The remote control status of the auxiliary oil pump is arrival;

[0159] The remote control status of the main motor cooling fan is reached;

[0160] The remote control status of the oil mist fan is arrival;

[0161] The remote control status of the fuel tank heater is arrival;

[0162] The running signal of the machine seal water pump is running;

[0163] The circulation pump operation signal is running;

[0164] The anti-surge valve opening feedback is greater than the preset threshold.

[0165] Furthermore, in one embodiment of the present invention, the monitoring data includes:

[0166] Auxiliary oil pump running time;

[0167] Inverter operation feedback signal;

[0168] Lubricating oil station gearbox inlet oil pressure and delay time;

[0169] Steam compressor motor winding temperature and delay time;

[0170] Steam compressor motor front bearing temperature and delay time;

[0171] Steam compressor motor rear bearing temperature and delay time;

[0172] Steam compressor front bearing temperature and signal;

[0173] Steam compressor rear bearing temperature and signal;

[0174] Steam compressor thrust bearing temperature and signal;

[0175] Oil supply temperature and delay time of steam compressor lubricating oil station.

[0176] Furthermore, in one embodiment of the present invention, the above protection shutdown conditions include:

[0177] The auxiliary oil pump runs for the second time or the inverter operation feedback signal arrives, the lubricating oil station gearbox inlet oil pressure is less than the preset pressure and the delay time is the third time;

[0178] The steam compressor motor winding temperature is greater than the second temperature and the delay time is the third time;

[0179] The temperature of the front bearing of the steam compressor motor is greater than the third temperature and the delay time is the third time;

[0180] The temperature of the rear bearing of the steam compressor motor is greater than the third temperature and the delay time is the third time;

[0181] The temperature of the front bearing of the steam compressor is greater than the fourth temperature or the signal is disconnected and the delay time is the third time;

[0182] The temperature of the rear bearing of the steam compressor is greater than the fourth temperature or the signal is disconnected and the delay time is the third time;

[0183] The temperature of the steam compressor thrust bearing is greater than the fourth temperature or the signal is disconnected and the delay time is the third time;

[0184] The oil supply temperature of the steam compressor lubricating oil station is greater than the fifth temperature and the delay time is the third time.

[0185] According to the steam compressor status monitoring device of the embodiment of the present invention, the device can determine whether the steam compressor is started normally or shut down for protection through the status data and monitoring data of the steam compressor, thereby protecting the steam compressor and avoiding performance degradation or even failure of the steam compressor.

[0186] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0187] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Claims

1. A method for monitoring the state of a steam compressor, characterized in that: The method comprises: obtaining current status data of the steam compressor; Determining whether the status data satisfies a start condition; If the starting condition is met, starting the steam compressor; Acquiring monitoring data of the steam compressor; Determining whether the monitoring data meets the protection shutdown condition; If the protection shutdown condition is met, it is determined to execute the shutdown protection operation.

2. The method according to claim 1, characterized in that The state data includes: a frequency converter signal; Steam compressor oil tank temperature; Main motor downtime; Auxiliary oil pump remote control status; Remote control status of main motor cooling fan; Oil mist fan remote control status; Fuel tank heater remote control status; Machine seal water pump operation signal; Circulation pump running signal; Anti-surge valve opening.

3. The method according to claim 2, characterized in that The start-up conditions include: the inverter signal is an inverter fault-free signal; The steam compressor oil tank temperature is greater than the first temperature; The main motor downtime is longer than the first time; The remote control status of the auxiliary oil pump is arrival; The remote control status of the main motor cooling fan is reached; The remote control status of the oil mist fan is arrival; The remote control status of the fuel tank heater is arrival; The running signal of the machine seal water pump is running; The circulation pump operation signal is running; The anti-surge valve opening feedback is greater than the preset threshold.

4. The method according to claim 1, characterized in that: The monitoring data include: Auxiliary oil pump operating time; Inverter operation feedback signal; Lubricating oil station gearbox inlet oil pressure and delay time; Steam compressor motor winding temperature and delay time; Steam compressor motor front bearing temperature and delay time; Steam compressor motor rear bearing temperature and delay time; Steam compressor front bearing temperature and signal; Steam compressor rear bearing temperature and signal; Steam compressor thrust bearing temperature and signal; Oil supply temperature and delay time of steam compressor lubricating oil station.

5. The method according to claim 4, characterized in that The protection shutdown conditions include: The auxiliary oil pump runs for the second time or the inverter operation feedback signal arrives, the lubricating oil station gearbox inlet oil pressure is less than the preset pressure and the delay time is the third time; The steam compressor motor winding temperature is greater than the second temperature and the delay time is the third time; The temperature of the front bearing of the steam compressor motor is greater than the third temperature and the delay time is the third time; The temperature of the rear bearing of the steam compressor motor is greater than the third temperature and the delay time is the third time; The temperature of the front bearing of the steam compressor is greater than the fourth temperature or the signal is disconnected and the delay time is the third time; The temperature of the rear bearing of the steam compressor is greater than the fourth temperature or the signal is disconnected and the delay time is the third time; The temperature of the steam compressor thrust bearing is greater than the fourth temperature or the signal is disconnected and the delay time is the third time; The oil supply temperature of the steam compressor lubricating oil station is greater than the fifth temperature and the delay time is the third time.

6. A steam compressor condition monitoring device, characterized in that: The device comprises: A first acquisition module, used to acquire current status data of the steam compressor; A first determination module, used to determine whether the state data meets the start condition; A starting module, used for starting the steam compressor if the starting condition is met; A second acquisition module, used to acquire monitoring data of the steam compressor; A second determination module is used to determine whether the monitoring data meets the protection shutdown condition; The execution module is used to determine to execute the shutdown protection operation if the protection shutdown condition is met.

7. The device according to claim 6, characterized in that The status data includes: Inverter signal; Steam compressor oil tank temperature; Main motor downtime; Auxiliary oil pump remote control status; Remote control status of main motor cooling fan; Oil mist fan remote control status; Fuel tank heater remote control status; Machine seal water pump operation signal; Circulation pump running signal; Anti-surge valve opening.

8. The device according to claim 6, characterized in that The monitoring data include: Auxiliary oil pump operating time; Inverter operation feedback signal; Lubricating oil station gearbox inlet oil pressure and delay time; Steam compressor motor winding temperature and delay time; Steam compressor motor front bearing temperature and delay time; Steam compressor motor rear bearing temperature and delay time; Steam compressor front bearing temperature and signal; Steam compressor rear bearing temperature and signal; Steam compressor thrust bearing temperature and signal; Oil supply temperature and delay time of steam compressor lubricating oil station.

9. An electronic device comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 5.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

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