Cylindrical valve hydraulic oil progressive type unmanned monitoring online oil filtering system and method

Abstract

According to the system, a control cabinet is connected with a turbine oil granularity online monitoring device, a first oil pump, a second oil pump, a barrel valve pressure oil tank and a barrel valve oil return tank; the turbine oil granularity online monitoring device, the first oil pump and the second oil pump are connected with the cylinder valve oil return tank; the first oil pump and the second oil pump are connected with the cylinder valve pressure oil tank through the oil tank oil inlet valve. The cylinder valve pressure oil tank is connected with the cylinder valve oil return tank through the oil tank oil inlet valve and the oil tank oil discharge valve. The turbine oil granularity online monitoring device is used for monitoring the granularity of the turbine oil and sending the granularity value to the control cabinet; the control cabinet is used for judging whether a filtering instruction needs to be generated or not according to the granularity value, and if yes, the filtering instruction is sent to the second oil pump; and the second oil pump is used for filtering the turbine oil. According to the technical scheme, the unmanned monitoring on-line automatic oil filtering function of the pressure oil can be achieved, and time and labor are saved.

Description

Technical Field

[0001] The present application relates to the technical field of operation monitoring of hydraulic systems of water turbine cylinder valve equipment, and in particular to a cylinder valve hydraulic oil progressive unmanned monitoring online oil filtration system and method. Background Art

[0002] The cylinder valve system of a hydro-turbine generator is a crucial component of a vertical hydro-turbine generator set. The cylinder valve (i.e., the valve body) is installed between the fixed and movable guide vanes of the turbine. It moves vertically upward (opening) and downward (closing) between the fixed and movable guide vanes, thereby conducting and shutting off the flow of water through the turbine. When the unit is shut down, closing the cylinder valve reduces guide vane leakage. If the unit's water diversion mechanism fails to operate due to a fault, the system can quickly shut off the water flow, stopping the turbine's rotation and protecting the unit. The safe and reliable operation of the cylinder valve system is directly related to the safe and reliable operation of the hydro-turbine generator set. Cylinder valve jamming failures are common in the hydropower industry, mostly due to excessive particle size in the pressure oil source, which causes precision components such as the solenoid valve to jam. In a cylinder valve system, a reliable pressure oil source is a key indicator of cylinder valve safety. In existing technologies, hydropower plants must assign dedicated oil filtration personnel to regularly conduct oil sampling and testing. If the oil filtration results are unsatisfactory, online oil filtration is required. This dedicated online oil filtration process often takes over a week, which is time-consuming and labor-intensive. Therefore, a solution is urgently needed to automatically monitor and filter the particle size of the oil in the cylinder valve hydraulic system. Summary of the Invention

[0003] The present application provides a cylindrical valve hydraulic oil progressive unmanned monitoring online oil filtration system and method, which at least solves the technical problem of time-consuming and labor-intensive manual monitoring.

[0004] The first embodiment of the present application provides a cylindrical valve hydraulic oil progressive unmanned monitoring online oil filtration system, the system comprising:

[0005] Turbine oil particle size online monitoring device, first oil pump, second oil pump, cylinder valve pressure oil tank, cylinder valve return oil tank, control cabinet, oil tank inlet valve and oil tank drain valve;

[0006] The control cabinet is respectively connected to the turbine oil particle size online monitoring device, the first oil pump, the second oil pump, the cylinder valve pressure oil tank, and the cylinder valve return oil tank;

[0007] The turbine oil particle size online monitoring device, the first oil pump, and the second oil pump are all connected to the cylinder valve return oil tank;

[0008] Both the first oil pump and the second oil pump are connected to the barrel valve pressure oil tank through the oil tank inlet valve, and the barrel valve pressure oil tank is connected to the barrel valve return oil tank through the oil tank inlet valve and the oil tank drain valve;

[0009] The barrel valve return oil tank is used to store turbine oil;

[0010] The on-line turbine oil particle size monitoring device is used to monitor the particle size of the turbine oil in the barrel valve return oil tank and send the monitored particle size value to the control cabinet;

[0011] The control cabinet is used to judge whether a filtering instruction needs to be generated according to the monitored particle size value. If so, the filtering instruction is sent to the second oil pump;

[0012] The second oil pump is used to filter the turbine oil.

[0013] Preferably, a pressure gauge is arranged in the barrel valve pressure oil tank. The pressure gauge is used to monitor the pressure in the barrel valve pressure oil tank and send the pressure in the barrel valve pressure oil tank to the control cabinet;

[0014] The control cabinet is also used to judge whether the pressure is less than a preset first pressure value. If so, a pressure building instruction is generated;

[0015] The first oil pump is used to build pressure based on the pressure building instruction.

[0016] Furthermore, the control cabinet is also used to monitor whether the pressure built in the barrel valve pressure oil tank within a first preset time period is greater than or equal to the first pressure value. If not, a second oil pump pressure building instruction is generated;

[0017] The second oil pump is also used to build pressure based on the second oil pump pressure building instruction.

[0018] Furthermore, the first oil pump includes: a first filter, a first booster pump, a second filter, a first safety valve, a second safety valve, and a first oil outlet valve;

[0019] One end of the first filter is placed in the barrel valve return oil tank, and the other end of the first filter is connected to one end of the first booster pump;

[0020] The other end of the first booster pump is connected to one end of the second filter, and the other end of the second filter is connected to the first oil outlet valve;

[0021] One ends of the first safety valve and the second safety valve are both connected to the barrel valve return oil tank, and the other ends of the first safety valve and the second safety valve are both connected to the first oil outlet valve;

[0022] The first oil outlet valve is connected between the oil tank inlet valve and the oil tank outlet valve.

[0023] Further, the second oil pump includes: a third filter, a second booster pump, a fourth filter, a third safety valve, a fourth safety valve, and a second oil outlet valve;

[0024] One end of the third filter is placed in the cylinder valve return oil tank, and the other end of the third filter is connected to one end of the second booster pump;

[0025] The other end of the second booster pump is connected to one end of the fourth filter, and the other end of the fourth filter is connected to the second oil outlet valve;

[0026] One ends of the third safety valve and the fourth safety valve are both connected to the cylinder valve return oil tank, and the other ends of the third safety valve and the fourth safety valve are both connected to the second oil outlet valve;

[0027] The second oil outlet valve is connected between the oil tank inlet valve and the oil tank outlet valve.

[0028] Further, the control cabinet is further configured to generate a stop filtration instruction when the monitored particle size value is less than or equal to a preset particle size filtration threshold.

[0029] Further, the control cabinet is further configured to monitor the operating time of the first oil pump and the second oil pump, and alarm when the operating time of the first oil pump and the second oil pump is greater than a first warning threshold.

[0030] Further, the control cabinet is further configured to monitor the pressure difference of the turbine oil output by the first filter and the second filter, and the pressure difference of the turbine oil output by the third filter and the fourth filter, and alarm when the pressure difference is greater than a preset first pressure difference threshold.

[0031] Further, the control cabinet is further configured to generate a control instruction to open the first safety valve and the second safety valve when the pressure difference of the turbine oil output by the first filter and the second filter is greater than a preset second pressure difference threshold;

[0032] The control cabinet is further configured to generate a control instruction to open the third safety valve and the fourth safety valve when the pressure difference of the turbine oil output by the third filter and the fourth filter is greater than a preset second pressure difference threshold.

[0033] An embodiment of the second aspect of the present application provides a method for unmanned monitoring and online oil filtration of a cylindrical valve hydraulic oil progressive type, including:

[0034] The particle size of the turbine oil in the cylinder valve return oil tank is monitored by an on-line turbine oil particle size monitoring device, and the monitored particle size value is sent to the control cabinet;

[0035] The control cabinet determines whether a filtration instruction needs to be generated according to the monitored particle size value. If so, the filtration instruction is sent to the second oil pump;

[0036] The second oil pump filters the turbine oil based on the filtration instruction.

[0037] The technical solution provided by the embodiments of the present application at least brings the following beneficial effects:

[0038] The present application proposes a progressive unmanned monitoring on-line oil filtration system and method for the hydraulic oil of a cylindrical valve. The system includes: an on-line turbine oil particle size monitoring device, a first oil pump, a second oil pump, a cylinder valve pressure oil tank, a cylinder valve return oil tank, a control cabinet, an oil tank inlet valve, and an oil tank drain valve; the control cabinet is respectively connected to the on-line turbine oil particle size monitoring device, the first oil pump, the second oil pump, the cylinder valve pressure oil tank, and the cylinder valve return oil tank; the on-line turbine oil particle size monitoring device, the first oil pump, and the second oil pump are all connected to the cylinder valve return oil tank; the first oil pump and the second oil pump are both connected to the cylinder valve pressure oil tank through the oil tank inlet valve, and the cylinder valve pressure oil tank is connected to the cylinder valve return oil tank through the oil tank inlet valve and the oil tank drain valve; the cylinder valve return oil tank is used to store turbine oil; the on-line turbine oil particle size monitoring device is used to monitor the particle size of the turbine oil in the cylinder valve return oil tank and send the monitored particle size value to the control cabinet; the control cabinet is used to determine whether a filtration instruction needs to be generated according to the monitored particle size value. If so, the filtration instruction is sent to the second oil pump; the second oil pump is used to filter the turbine oil. The technical solution proposed by the present application can realize the function of unmanned monitoring and on-line automatic oil filtration of pressure oil, and can monitor in real time whether the particle size of the hydraulic oil of the cylindrical valve exceeds the standard. It not only effectively reduces the workload of oil chemical personnel and eliminates the need for special personnel for on-line oil filtration work, but also can timely process the hydraulic oil with excessive particle size, reduce equipment wear and improve the operation reliability of components, saving time and effort, saving daily maintenance costs, extending the service life of equipment, and having great significance and promotion value for the safe and stable operation of the cylindrical valve system of the hydroelectric generator in the hydropower plant.

[0039] The additional aspects and advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0041] Figure 1 The first structural diagram of a progressive unmanned monitoring on - line oil - filtering system for barrel - shaped valve hydraulic oil according to an embodiment of the present application;

[0042] Figure 2 The second structural diagram of a progressive unmanned monitoring on - line oil - filtering system for barrel - shaped valve hydraulic oil according to an embodiment of the present application;

[0043] Figure 3 The flowchart of a progressive unmanned monitoring on - line oil - filtering method for barrel - shaped valve hydraulic oil according to an embodiment of the present application;

[0044] Figure 4 The detailed flowchart of a progressive unmanned monitoring on - line oil - filtering method for barrel - shaped valve hydraulic oil according to an embodiment of the present application;

[0045] Reference numerals

[0046] Online turbine oil particle size monitoring device 1, first oil pump 2, second oil pump 3, barrel - valve pressure oil tank 4, barrel - valve return oil tank 5, control cabinet 6, oil tank inlet valve 7, oil tank drain valve 8, pressure oil supply valve 9, return oil valve 10, return oil tank drain valve 11, liquid level gauge 12, self - refueling valve 13, first filter 2 - 1, first booster pump 2 - 2, second filter 2 - 3, first safety valve 2 - 4, second safety valve 2 - 5, first oil outlet valve 2 - 6, third filter 3 - 1, second booster pump 3 - 2, fourth filter 3 - 3, third safety valve 3 - 4, fourth safety valve 3 - 5, second oil outlet valve 3 - 6. Detailed implementation manners

[0047] The following details the embodiments of the present application. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described by referring to the drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application.

[0048] An on-line oil filtering system and method for a cylindrical valve hydraulic oil progressive unmanned monitoring proposed in this application. The system includes: a turbine oil particle size on-line monitoring device, a first oil pump, a second oil pump, a cylindrical valve pressure oil tank, a cylindrical valve return oil tank, a control cabinet, an oil tank inlet valve, and an oil tank drain valve; the control cabinet is respectively connected to the turbine oil particle size on-line monitoring device, the first oil pump, the second oil pump, the cylindrical valve pressure oil tank, and the cylindrical valve return oil tank; the turbine oil particle size on-line monitoring device, the first oil pump, and the second oil pump are all connected to the cylindrical valve return oil tank; the first oil pump and the second oil pump are both connected to the cylindrical valve pressure oil tank through the oil tank inlet valve, and the cylindrical valve pressure oil tank is connected to the cylindrical valve return oil tank through the oil tank inlet valve and the oil tank drain valve; the cylindrical valve return oil tank is used to store turbine oil; the turbine oil particle size on-line monitoring device is used to monitor the particle size of the turbine oil in the cylindrical valve return oil tank and send the monitored particle size value to the control cabinet; the control cabinet is used to judge whether a filtering instruction needs to be generated according to the monitored particle size value, and if so, send the filtering instruction to the second oil pump; the second oil pump is used to filter the turbine oil. The technical solution proposed in this application can realize the function of unmanned monitoring and on-line automatic oil filtering of pressure oil, and real-time monitor whether the particle size of the cylindrical valve hydraulic oil exceeds the standard. It not only effectively reduces the workload of oil chemical personnel and eliminates the need for special personnel for on-line oil filtering work, but also can timely process the hydraulic oil with excessive particle size, reduce equipment wear and improve the operation reliability of components, saving time and effort, saving daily maintenance costs, extending the service life of equipment, and having great significance and popularization value for the safe and stable operation of the cylindrical valve system of the hydroelectric generator in the hydropower plant.

[0049] The following describes an on-line oil filtering system and method for a cylindrical valve hydraulic oil progressive unmanned monitoring according to an embodiment of the present application with reference to the accompanying drawings.

[0050] Embodiment 1

[0051] Figure 1 As shown in the structure diagram of an on-line oil filtering system for a cylindrical valve hydraulic oil progressive unmanned monitoring provided according to an embodiment of the present application, Figure 1 As shown, the system includes: a turbine oil particle size on-line monitoring device 1, a first oil pump 2, a second oil pump 3, a cylindrical valve pressure oil tank 4, a cylindrical valve return oil tank 5, a control cabinet 6, an oil tank inlet valve 7, and an oil tank drain valve 8;

[0052] The control cabinet 6 is respectively connected to the turbine oil particle size on-line monitoring device 1, the first oil pump 2, the second oil pump 3, the cylindrical valve pressure oil tank 4, and the cylindrical valve return oil tank 5;

[0053] The turbine oil particle size on-line monitoring device 1, the first oil pump 2, and the second oil pump 3 are all connected to the cylindrical valve return oil tank 5;

[0054] The first oil pump 2 and the second oil pump 3 are both connected to the barrel valve pressure oil tank 4 through the oil tank inlet valve 7, and the barrel valve pressure oil tank 4 is connected to the barrel valve return oil tank 5 through the oil tank inlet valve 7 and the oil tank drain valve 8;

[0055] The barrel valve return oil tank 5 is used to store turbine oil;

[0056] The on-line turbine oil particle size monitoring device 1 is used to monitor the particle size of the turbine oil in the barrel valve return oil tank 5 and send the monitored particle size value to the control cabinet 6;

[0057] The control cabinet 6 is used to judge whether a filtering instruction needs to be generated according to the monitored particle size value, and if so, send the filtering instruction to the second oil pump 3;

[0058] The second oil pump 3 is used to filter the turbine oil.

[0059] It should be noted that Figure 1 Only as a structural schematic of a progressive unmanned monitoring on-line oil filtering system for the hydraulic oil of the barrel valve provided in this embodiment, it does not limit the structure of the progressive unmanned monitoring on-line oil filtering system for the hydraulic oil of the barrel valve of the present invention.

[0060] In the embodiment of the present disclosure, a pressure gauge is provided in the barrel valve pressure oil tank 4, and the pressure gauge is used to monitor the pressure in the barrel valve pressure oil tank and send the pressure in the barrel valve pressure oil tank to the control cabinet 6;

[0061] The control cabinet 6 is further used to judge whether the pressure is less than a preset first pressure value, and if so, generate a pressure building instruction;

[0062] The first oil pump 2 is used to build pressure based on the pressure building instruction.

[0063] Furthermore, the control cabinet 6 is further used to monitor whether the pressure built in the barrel valve pressure oil tank within a first preset time period is greater than or equal to the first pressure value, and if not, generate a second oil pump pressure building instruction;

[0064] The second oil pump 3 is further used to build pressure based on the second oil pump pressure building instruction.

[0065] In the embodiment of the present disclosure, as Figure 2 shown, the first oil pump 2 includes: a first filter 2-1, a first booster pump 2-2, a second filter 2-3, a first safety valve 2-4, a second safety valve 2-5, and a first oil outlet valve 2-6;

[0066] One end of the first filter 2-1 is placed into the cylinder valve return oil tank 5, and the other end of the first filter 2-1 is connected to one end of the first booster pump 2-2;

[0067] The other end of the first booster pump 2-2 is connected to one end of the second filter 2-3, and the other end of the second filter 2-3 is connected to the first oil outlet valve 2-6;

[0068] One ends of the first safety valve 2-4 and the second safety valve 2-5 are both connected to the cylinder valve return oil tank 5, and the other ends of the first safety valve 2-4 and the second safety valve 2-5 are both connected to the first oil outlet valve 2-6;

[0069] The first oil outlet valve 2-6 is connected between the oil tank inlet valve 7 and the oil tank drain valve 8.

[0070] Further, as Figure 2 shown, the second oil pump 3 includes: a third filter 3-1, a second booster pump 3-2, a fourth filter 3-3, a third safety valve 3-4, a fourth safety valve 3-5, and a second oil outlet valve 3-6;

[0071] One end of the third filter 3-1 is placed into the cylinder valve return oil tank 5, and the other end of the third filter 3-1 is connected to one end of the second booster pump 3-2;

[0072] The other end of the second booster pump 3-2 is connected to one end of the fourth filter 3-3, and the other end of the fourth filter 3-3 is connected to the second oil outlet valve 3-6;

[0073] One ends of the third safety valve 3-4 and the fourth safety valve 3-5 are both connected to the cylinder valve return oil tank 5, and the other ends of the third safety valve 3-4 and the fourth safety valve 3-5 are both connected to the second oil outlet valve 3-6;

[0074] The second oil outlet valve 3-6 is connected between the oil tank inlet valve 7 and the oil tank drain valve 8.

[0075] In the embodiment of the present disclosure, the control cabinet 6 is further configured to generate a stop filtering instruction when the monitored particle size value is less than or equal to a preset particle size filtering threshold.

[0076] It should be noted that the preset particle size filtering threshold may be level 6.

[0077] Further, the control cabinet 6 is further configured to monitor the running time of the first oil pump 2 and the second oil pump 3, and alarm when the running time of the first oil pump 2 and the second oil pump 3 is greater than a first warning threshold.

[0078] It should be noted that when the first oil pump 2 and the second oil pump 3 are operating normally, the oil pumps are in a "one main and one standby" mode. When the system pressure drops too quickly or a short-term fault occurs, the main oil pump and the standby oil pump simultaneously build pressure in the system to the normal pressure. When the oil pump runs continuously for more than 120 s, the system determines that the oil pump has timed out and sends a signal to the control cabinet 6.

[0079] Among them, the first oil pump 2 and the second oil pump 3 can automatically switch between the main and standby modes every 3 hours.

[0080] Furthermore, the control cabinet 6 is also used to monitor the pressure difference of the turbine oil output by the first filter 2-1 and the second filter 2-3, and the pressure difference of the turbine oil output by the third filter 3-1 and the fourth filter 3-3. When the pressure difference is greater than a preset first pressure difference threshold, an alarm is issued.

[0081] It should be noted that the first pressure difference threshold can be 3.4 bar.

[0082] Furthermore, the control cabinet 6 is also used to generate a control instruction to open the first safety valve 2-4 and the second safety valve 2-5 when the pressure difference of the turbine oil output by the first filter 2-1 and the second filter 2-3 is greater than a preset second pressure difference threshold;

[0083] The control cabinet 6 is also used to generate a control instruction to open the third safety valve 3-4 and the fourth safety valve 3-5 when the pressure difference of the turbine oil output by the third filter 3-1 and the fourth filter 3-3 is greater than a preset second pressure difference threshold.

[0084] It should be noted that the second pressure difference threshold can be 4.5 bar. After the filter screen is blocked, the oil circuit can be connected through the bypass circuit, and the opening value of the bypass valve, that is, the safety valve, is 4.5 bar, so as to achieve the purpose of protecting the pipeline and the oil pump.

[0085] In the embodiment of the present disclosure, as Figure 2 shown, the cylindrical valve hydraulic oil progressive unmanned monitoring online oil filtering system further includes: a pressure oil supply valve 9, a return oil valve 10, a return oil tank drain valve 11, a liquid level gauge 12, and a self-oiling valve 13;

[0086] The pressure oil supply valve 9 is arranged between the cylindrical valve pressure oil tank 4 and the oil tank inlet valve 7 for supplying oil outward;

[0087] The return oil valve 10 is connected to the cylindrical valve return oil tank 5 for receiving externally input oil;

[0088] The return oil tank drain valve 11 is arranged at the bottom of the cylindrical valve return oil tank 5 for discharging the oil in the cylindrical valve return oil tank 5;

[0089] The liquid level gauge 12 is connected to the cylinder valve oil return tank 5 for monitoring the oil liquid level of the cylinder valve oil return tank 5;

[0090] The self - oil filling valve 13 is respectively connected to the automatic oil filling pipe and the cylinder valve oil return tank 5. When the oil liquid level is less than a preset liquid level value, the control cabinet 6 controls the self - oil filling valve 13 to open for oil filling.

[0091] In summary, a progressive unmanned - monitored online oil filtering system for the hydraulic oil of a cylinder valve proposed in this embodiment can realize the function of unmanned - monitored online automatic oil filtering of pressure oil, and can monitor in real - time whether the particle size of the hydraulic oil of the cylinder valve exceeds the standard. It not only effectively reduces the workload of oil - chemical personnel, eliminates the need for special personnel for online oil filtering work, but also can timely process the pressure oil with excessive particle size, reduce equipment wear and improve the operation reliability of components, saving time and effort, reducing daily maintenance costs, extending the service life of equipment, and having great significance and popularization value for the safe and stable operation of the cylinder valve system of the hydro - generator in the hydropower plant.

[0092] Embodiment Two

[0093] Figure 3 As shown in the flowchart of a progressive unmanned - monitored online oil filtering method for the hydraulic oil of a cylinder valve provided according to an embodiment of the present application, Figure 3 the method includes:

[0094] Using a turbine oil particle size online monitoring device to monitor the particle size of the turbine oil in the cylinder valve oil return tank, and sending the monitored particle size value to the control cabinet;

[0095] The control cabinet determines whether a filtering instruction needs to be generated according to the monitored particle size value. If so, it sends the filtering instruction to the second oil pump; the second oil pump filters the turbine oil based on the filtering instruction.

[0096] In the embodiment of the present disclosure, the method further includes:

[0097] Using a pressure gauge in the cylinder valve pressure oil tank to monitor the pressure in the cylinder valve pressure oil tank, and sending the pressure in the cylinder valve pressure oil tank to the control cabinet;

[0098] Using the control cabinet to determine whether the pressure is less than a preset first pressure value. If so, a pressure - building instruction is generated;

[0099] The first oil pump builds pressure based on the pressure - building instruction.

[0100] Furthermore, the method further includes:

[0101] The control cabinet is used to monitor whether the pressure built up in the pressure oil tank of the cylinder valve within the first preset duration is greater than or equal to the first pressure value. If not, a second oil pump pressure build-up instruction is generated.

[0102] The second oil pump builds pressure based on the second oil pump pressure build-up instruction.

[0103] The control cabinet is further used to generate a stop filtration instruction when the monitored particle size value is less than or equal to the preset particle size filtration threshold.

[0104] Furthermore, the method further includes:

[0105] The control cabinet is used to monitor the operating time of the first oil pump and the second oil pump. When the operating time of the first oil pump and the second oil pump is greater than the first warning threshold, an alarm is given.

[0106] Furthermore, the method further includes:

[0107] The control cabinet is used to monitor the pressure difference between the turbine oil output by the first filter and the second filter, and the pressure difference between the turbine oil output by the third filter and the fourth filter. When the pressure difference is greater than the preset first pressure difference threshold, an alarm is given.

[0108] Furthermore, the method further includes:

[0109] When the pressure difference between the turbine oil output by the first filter and the second filter is greater than the preset second pressure difference threshold, the control cabinet generates a control instruction to open the first safety valve and the second safety valve;

[0110] When the pressure difference between the turbine oil output by the third filter and the fourth filter is greater than the preset second pressure difference threshold, the control cabinet generates a control instruction to open the third safety valve and the fourth safety valve.

[0111] It should be noted that when the first oil pump and the second oil pump are operating normally, the oil pumps are in a "one main and one standby" mode. When the system pressure drops too fast or a short-term fault occurs, the main oil pump and the standby oil pump build pressure for the system to the normal pressure at the same time. When the oil pump runs continuously for more than 120 s, the system determines that the oil pump runs overtime and sends a signal to the control cabinet.

[0112] Among them, the first oil pump 2 and the second oil pump 3 can automatically perform a main-standby rotation every 3 hours.

[0113] It should be noted that the detailed process of the progressive unmanned monitoring online oil filtration method for the hydraulic oil of the cylindrical valve is as Figure 4 shown and will not be elaborated here.

[0114] In summary, the online oil filtering method for the cylindrical valve hydraulic oil progressive type without human monitoring proposed in this embodiment can realize the function of online automatic oil filtering without human monitoring of the pressure oil, and real-time monitor whether the particle size of the cylindrical valve hydraulic oil exceeds the standard. It not only effectively reduces the workload of oil chemical personnel and eliminates the need for special personnel to perform online oil filtering work, but also can timely process the hydraulic oil with excessive particle size, reduce equipment wear and improve the operation reliability of components, saving time and effort, reducing daily maintenance costs, extending the service life of the equipment, and having great significance and promotion value for the safe and stable operation of the cylindrical valve system of the hydroelectric generator in the hydropower plant.

[0115] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0116] Any process or method description shown in the flowchart or described in other ways herein can be understood to represent a module, segment, or part of code including one or more executable instructions for implementing a customized logic function or process. The scope of the preferred embodiments of the present application includes additional implementations, where the functions can be executed in a manner that is not shown or discussed, including in a substantially simultaneous manner or in a reverse order according to the functions involved, which should be understood by those skilled in the art of the embodiments of the present application.

[0117] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A progressive unmanned monitoring on-line oil filtering system for the hydraulic oil of a cylindrical valve, characterized in that, The system includes: an on-line monitoring device for turbine oil particle size, a first oil pump, a second oil pump, a barrel valve pressure oil tank, a barrel valve return oil tank, a control cabinet, an oil tank inlet valve, and an oil tank drain valve; The control cabinet is respectively connected to the on-line monitoring device for turbine oil particle size, the first oil pump, the second oil pump, the barrel valve pressure oil tank, and the barrel valve return oil tank; The on-line monitoring device for turbine oil particle size, the first oil pump, and the second oil pump are all connected to the barrel valve return oil tank; The first oil pump and the second oil pump are both connected to the barrel valve pressure oil tank through the oil tank inlet valve, and the barrel valve pressure oil tank is connected to the barrel valve return oil tank through the oil tank inlet valve and the oil tank drain valve; The barrel valve return oil tank is used to store turbine oil; The on-line monitoring device for turbine oil particle size is used to monitor the particle size of the turbine oil in the barrel valve return oil tank and send the monitored particle size value to the control cabinet; The control cabinet is used to judge whether a filtering instruction needs to be generated according to the monitored particle size value, and if so, send the filtering instruction to the second oil pump; The second oil pump is used to filter the turbine oil.

2. The oil filtering system according to claim 1, wherein A pressure gauge is arranged in the barrel valve pressure oil tank, and the pressure gauge is used to monitor the pressure in the barrel valve pressure oil tank and send the pressure in the barrel valve pressure oil tank to the control cabinet; The control cabinet is further used to judge whether the pressure is less than a preset first pressure value, and if so, generate a pressure building instruction; The first oil pump is used to build pressure based on the pressure building instruction.

3. The oil filtering system according to claim 2, wherein, The control cabinet is further used to monitor whether the pressure building pressure in the barrel valve pressure oil tank is greater than or equal to the first pressure value within a first preset time period, and if not, generate a second oil pump pressure building instruction; The second oil pump is further used to build pressure based on the second oil pump pressure building instruction.

4. The oil filtering system according to claim 3, wherein, The first oil pump includes: a first filter, a first booster pump, a second filter, a first safety valve, a second safety valve, and a first oil outlet valve; One end of the first filter is placed in the barrel valve return oil tank, and the other end of the first filter is connected to one end of the first booster pump; The other end of the first booster pump is connected to one end of the second filter, and the other end of the second filter is connected to the first oil outlet valve; One ends of the first safety valve and the second safety valve are both connected to the barrel valve return oil tank, and the other ends of the first safety valve and the second safety valve are both connected to the first oil outlet valve; The first oil outlet valve is connected between the oil tank inlet valve and the oil tank drain valve.

5. The oil filtering system according to claim 4, characterized in that The second oil pump includes: a third filter, a second booster pump, a fourth filter, a third safety valve, a fourth safety valve, and a second oil outlet valve; One end of the third filter is placed in the barrel valve return oil tank, and the other end of the third filter is connected to one end of the second booster pump; The other end of the second booster pump is connected to one end of the fourth filter, and the other end of the fourth filter is connected to the second oil outlet valve; One end of each of the third safety valve and the fourth safety valve is connected to the barrel valve oil return tank, and the other end of each of the third safety valve and the fourth safety valve is connected to the second oil outlet valve; The second oil outlet valve is connected between the oil tank inlet valve and the oil tank drain valve.

6. The oil filtering system according to claim 5, wherein, The control cabinet is further configured to generate a stop filtration instruction when the monitored particle size value is less than or equal to a preset particle size filtration threshold.

7. The oil filtering system according to claim 6, wherein, The control cabinet is further configured to monitor the operating time of the first oil pump and the second oil pump, and give an alarm when the operating time of the first oil pump and the second oil pump is greater than a first warning threshold.

8. The oil filtering system according to claim 6, characterized in that, The control cabinet is further configured to monitor the pressure difference of the turbine oil output by the first filter and the second filter, and the pressure difference of the turbine oil output by the third filter and the fourth filter, and give an alarm when the pressure difference is greater than a preset first pressure difference threshold.

9. The oil filtering system according to claim 8, wherein, The control cabinet is further configured to generate a control instruction to open the first safety valve and the second safety valve when the pressure difference of the turbine oil output by the first filter and the second filter is greater than a preset second pressure difference threshold; The control cabinet is further configured to generate a control instruction to open the third safety valve and the fourth safety valve when the pressure difference of the turbine oil output by the third filter and the fourth filter is greater than a preset second pressure difference threshold.

10. A method for progressive unmanned monitoring and on-line oil filtering of the barrel valve hydraulic oil in the barrel valve hydraulic oil progressive unmanned monitoring and on-line oil filtering system according to any one of the above claims 1-9, characterized in that, The method includes: Using a turbine oil particle size on-line monitoring device to monitor the particle size of the turbine oil in the barrel valve oil return tank, and sending the monitored particle size value to the control cabinet; The control cabinet determines whether to generate a filtration instruction according to the monitored particle size value, and if so, sends the filtration instruction to the second oil pump; The second oil pump filters the turbine oil based on the filtration instruction.

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