Generator detection circuit and generator

Abstract

The utility model relates to a generator detection circuit and a generator. Gas sensors are arranged on at least one of a lubricating oil return pipeline of the generator, an outlet bus position of the generator and a stator cooling water tank of the generator; the gas sensitive sensor is used for detecting a hydrogen concentration signal of the generator and transmitting the hydrogen concentration signal to the control unit; the control unit is used for generating a first control signal according to the hydrogen concentration signal and inputting the first control signal into the alarm unit; and the alarm unit is used for giving an alarm when receiving the first control signal. Whether the generator leaks hydrogen or not in the working process can be monitored in real time, and then the accuracy of detecting whether the generator leaks hydrogen or not can be improved. According to the technical scheme, related operators can be prompted that the internal leakage of the generator occurs in the working process, and the internal leakage can be timely treated, so that dangerous accidents can be reduced, and the safety of the generator and the related operators can be ensured.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technologies, and more particularly, to a generator detection circuit and a generator. Background Art

[0002] A hydrogen-cooled steam turbine generator is mainly a steam turbine generator set that uses hydrogen as a cooling medium. During the operation of a hydrogen-cooled steam turbine generator, hydrogen leakage may occur. If the leaked hydrogen reaches a certain concentration, dangerous accidents such as explosion or fire may occur, which will cause serious harm to relevant operators and the hydrogen-cooled steam turbine generator. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a generator detection circuit and a generator to solve the technical problems existing in the related art.

[0004] To achieve the above purpose, in a first aspect, the present disclosure provides a generator detection circuit, including a control unit, a gas sensor, and an alarm unit;

[0005] An output end of the gas sensor is connected to an input end of the control unit, an output end of the control unit is connected to the alarm unit, and the gas sensor is disposed at least at one of a lubricating oil return pipeline of the generator, a position of an outgoing bus of the generator, and a stator cooling water tank of the generator;

[0006] The gas sensor is configured to detect a hydrogen concentration signal of the generator and transmit the hydrogen concentration signal to the control unit;

[0007] The control unit is configured to generate a first control signal according to the hydrogen concentration signal and input the first control signal into the alarm unit;

[0008] The alarm unit is configured to give an alarm when receiving the first control signal.

[0009] Optionally, the control unit includes a controller, an analog-to-digital conversion module, and a comparator. The gas sensor is connected to the controller through the analog-to-digital conversion module, and the controller is respectively connected to the alarm unit and the comparator;

[0010] The analog-to-digital conversion module is configured to convert the hydrogen concentration signal into a hydrogen digital signal and transmit the hydrogen digital signal into the controller;

[0011] The controller is configured to transmit the hydrogen digital signal into the comparator;

[0012] The comparator is configured to compare the hydrogen digital signal with a first preset threshold, and when the hydrogen digital signal is greater than the first preset threshold, transmit a first comparison signal to the controller;

[0013] The controller is further configured to generate the first control signal when receiving the first comparison signal, and transmit the first control signal to the alarm unit.

[0014] Optionally, the control unit further includes a display, and an input end of the display is connected to an output end of the controller;

[0015] The controller is configured to input the hydrogen concentration signal into the display;

[0016] The display is configured to display the hydrogen concentration signal.

[0017] Optionally, the detection circuit further includes a pressure sensor and a valve. The valve is disposed on the demineralized water tank, and an output end of the pressure sensor is connected to an input end of the control unit;

[0018] The pressure sensor is configured to detect a pressure signal in the demineralized water tank and input the pressure signal into the control unit;

[0019] The control unit is configured to control the valve to be in an open state when the pressure signal is greater than a second preset threshold, so that the demineralized water tank discharges gas outward.

[0020] Optionally, the control unit includes a controller, an analog-to-digital conversion module and a comparator. The pressure sensor is connected to the controller through the analog-to-digital conversion module, and the controller is respectively connected to the valve and the comparator;

[0021] The analog-to-digital conversion module is configured to convert the pressure signal into a pressure digital signal and transmit the pressure digital signal into the controller;

[0022] The controller is configured to transmit the pressure digital signal into the comparator;

[0023] The comparator is configured to compare the pressure digital signal with a second preset threshold, and when the pressure digital signal is greater than the second preset threshold, transmit a second comparison signal to the controller;

[0024] The controller is further configured to control the valve to be in an open state when receiving the second comparison signal, so that the demineralized water tank discharges gas outward.

[0025] Optionally, the detection circuit further includes a liquid level sensor, and an output end of the liquid level sensor is connected to an input end of the control unit;

[0026] The liquid level sensor is configured to detect a liquid level signal in the stator cooling water tank of the generator and transmit the liquid level signal to the control unit;

[0027] The control unit is configured to generate a second control signal according to the liquid level signal and input the second control signal into the alarm unit;

[0028] The alarm unit is configured to give an alarm when receiving the second control signal.

[0029] Optionally, the control unit includes a controller, an analog-to-digital conversion module, and a comparator. The liquid level sensor is connected to the controller through the analog-to-digital conversion module, and the controller is respectively connected to the alarm unit and the comparator;

[0030] The analog-to-digital conversion module is configured to convert the liquid level signal into a liquid level digital signal and transmit the liquid level digital signal into the controller;

[0031] The controller is configured to transmit the liquid level digital signal into the comparator;

[0032] The comparator is configured to compare the liquid level digital signal with a third preset threshold value, and when the liquid level digital signal is less than the third preset threshold value, transmit a third comparison signal to the controller;

[0033] The controller is further configured to generate the second control signal when receiving the third comparison signal and transmit the second control signal to the alarm unit.

[0034] Optionally, the detection circuit further includes a temperature sensor, and an output end of the temperature sensor is connected to an input end of the control unit;

[0035] The temperature sensor is configured to detect a temperature signal of the generator and transmit the temperature signal to the control unit;

[0036] The control unit is configured to generate a third control signal according to the temperature signal and input the third control signal into the alarm unit;

[0037] The alarm unit is configured to give an alarm when receiving the third control signal.

[0038] Optionally, the control unit includes a controller, an analog-to-digital conversion module, and a comparator. The temperature sensor is connected to the controller through the analog-to-digital conversion module, and the controller is respectively connected to the alarm unit and the comparator;

[0039] The analog-to-digital conversion module is configured to convert the temperature signal into a temperature digital signal and transmit the temperature digital signal to the controller;

[0040] The controller is configured to transmit the temperature digital signal to the comparator;

[0041] The comparator is configured to compare the temperature digital signal with a fourth preset threshold, and when the temperature digital signal is greater than the fourth preset threshold, transmit a fourth comparison signal to the controller;

[0042] The controller is further configured to generate the third control signal when receiving the fourth comparison signal and transmit the third control signal to the alarm unit.

[0043] Optionally, the detection circuit further includes a humidity sensor, and an output end of the humidity sensor is connected to an input end of the control unit;

[0044] The humidity sensor is configured to detect a humidity signal of the generator and transmit the humidity signal to the control unit;

[0045] The control unit is configured to generate a fourth control signal according to the humidity signal and input the fourth control signal into the alarm unit;

[0046] The alarm unit is configured to give an alarm when receiving the fourth control signal.

[0047] Optionally, the control unit includes a controller, an analog-to-digital conversion module, and a comparator. The humidity sensor is connected to the controller through the analog-to-digital conversion module, and the controller is respectively connected to the alarm unit and the comparator;

[0048] The analog-to-digital conversion module is configured to convert the humidity signal into a humidity digital signal and transmit the humidity digital signal to the controller;

[0049] The controller is configured to transmit the humidity digital signal to the comparator;

[0050] The comparator is configured to compare the humidity digital signal with a fifth preset threshold, and when the humidity digital signal is greater than the fifth preset threshold, transmit a fifth comparison signal to the controller;

[0051] The controller is further configured to generate the fourth control signal when receiving the fifth comparison signal, and transmit the fourth control signal to the alarm unit.

[0052] Optionally, the detection circuit further includes a memory, and an input end of the memory is connected to an output end of the controller.

[0053] In a second aspect, the present disclosure further provides a generator, including the generator detection circuit according to any one of the first aspects of the present disclosure.

[0054] Through the above technical solution, a gas sensor for detecting a hydrogen concentration signal is provided at at least one of a lubricating oil return pipeline of the generator, a position of an outgoing busbar of the generator, and a stator cooling water tank of the generator, and the hydrogen concentration signal is transmitted to the control unit. By providing gas sensors for detecting hydrogen concentration signals at multiple locations of the generator, it is possible to monitor in real time whether hydrogen leakage occurs during the operation of the generator, thereby improving the accuracy of detecting whether internal hydrogen leakage occurs in the generator. Subsequently, the control unit can generate a first control signal according to the hydrogen concentration signal and input the first control signal into the alarm unit. Then, the alarm unit is configured to give an alarm when receiving the first control signal. When the gas sensor detects a hydrogen concentration signal in the generator, the control unit can process the hydrogen concentration signal and give an alarm through the alarm unit, which can prompt relevant operators that internal leakage occurs during the operation of the generator and take timely measures, thereby reducing the occurrence of dangerous accidents and ensuring the safety of the generator and relevant operators.

[0055] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. They are used together with the following specific implementation to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0057] Figure 1 is a schematic diagram of a generator detection circuit in the related art.

[0058] Figure 2 is a schematic diagram of a generator detection circuit according to an exemplary embodiment of the present disclosure.

[0059] Figure 3 is a schematic diagram of a generator detection circuit according to an exemplary embodiment of the present disclosure.

[0060] Figure 4It is a schematic diagram of a generator shown according to an exemplary embodiment of the present disclosure.

[0061] Description of reference numerals

[0062] 1. Generator; 2. Hydrogen supply device; 3. Oil-water separator; 4. Oil-water alarm; 5. Hydrogen manifold; 6. Hydrogen dryer; 7. Gas sensor; 8. Control unit; 9. Alarm unit; 10. Pressure sensor; 11. Liquid level sensor; 12. Temperature sensor; 13. Humidity sensor; 14. Display; 15. Valve; 16. Analog-to-digital converter; 17. Controller; 18. Comparator; 19. Memory; 401. Generator; 402. Generator detection circuit. Detailed implementation manners

[0063] The following will describe in detail the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present disclosure, and are not used to limit the present disclosure.

[0064] In the related art, during the operation of the generator 1, as Figure 1 shown, hydrogen can be introduced into the generator 1 through the hydrogen manifold 5 and the hydrogen supply device 2 until the hydrogen introduced into the generator 1 reaches the technical requirements. The hydrogen supply device 2 can be used to maintain the gas pressure in the generator 1 within a certain range for operation, and then the hydrogen pressure boost operation can be carried out according to the operation condition of the generator 1. The oil-water alarm 4 connected to the generator 1 can be used to detect the liquid leakage situation of the generator 1, the hydrogen dryer 6 is used to dry the hydrogen in the generator 1 to avoid adverse effects on the generator 1 caused by excessive water content in the hydrogen, and the oil-water separator 3 is used to separate water and oil in the gas.

[0065] The inventors found that in the related art, during the operation of the hydrogen-cooled turbogenerator 1, it is very difficult to detect the hydrogen leakage situation, and it poses a huge safety hazard. Seriously, it may cause harm to the hydrogen-cooled generator 1 and related operators.

[0066] In view of this, the present disclosure provides a generator 1 detection circuit and a generator 1 to solve the technical problems existing in the above-mentioned related art.

[0067] As Figure 2 shown, Figure 2 is a schematic diagram of a generator 1 detection circuit shown according to an exemplary embodiment of the present disclosure. Referring to Figure 2 , it includes a control unit 8, a gas sensor 7, and an alarm unit 9;

[0068] The output end of the gas sensor 7 is connected to the input end of the control unit 8, the output end of the control unit 8 is connected to the alarm unit 9, and the gas sensor 7 is arranged at least at one position of the lubricating oil return pipeline of the generator 1, the outgoing busbar position of the generator 1, and the stator cooling water tank of the generator 1;

[0069] The gas sensor 7 is used to detect the hydrogen concentration signal of the generator 1 and transmit the hydrogen concentration signal to the control unit 8;

[0070] The control unit 8 is used to generate a first control signal according to the hydrogen concentration signal and input the first control signal into the alarm unit 9;

[0071] The alarm unit 9 is used to give an alarm when receiving the first control signal.

[0072] Through the above technical solution, a gas sensor 7 for detecting the hydrogen concentration signal is arranged at least at one position of the lubricating oil return pipeline of the generator 1, the outgoing busbar position of the generator 1, and the stator cooling water tank of the generator 1, and the hydrogen concentration signal is transmitted to the control unit 8. Arranging gas sensors 7 for detecting the hydrogen concentration signal at multiple places of the generator 1 can monitor in real time whether hydrogen leakage occurs during the operation of the generator 1, thereby improving the accuracy of detecting whether internal hydrogen leakage occurs in the generator 1. Then, the control unit 8 can generate a first control signal according to the hydrogen concentration signal and input the first control signal into the alarm unit 9. Then, the alarm unit 9 is used to give an alarm when receiving the first control signal. When the gas sensor 7 detects a hydrogen concentration signal in the generator 1, the control unit 8 can process the hydrogen concentration signal, and the alarm unit 9 gives an alarm, which can prompt relevant operators that internal leakage occurs during the operation of the generator 1 and take timely measures, thereby reducing the occurrence of dangerous accidents and ensuring the safety of the generator 1 and relevant operators.

[0073] To enable those skilled in the art to better understand the generator 1 detection circuit provided by the present disclosure, the above-mentioned modules will be described in detail with examples below.

[0074] Exemplarily, the generator 1 can be a hydrogen-cooled steam turbine generator 1, and the present disclosure embodiment does not make specific limitations thereon. The gas sensor 7 can be a sensor for detecting gas concentration. It can be used to monitor the concentration of specific gases in the environment.

[0075] In this detection circuit, multiple gas sensors 7 can be included, and the gas sensors 7 are arranged at multiple positions such as the lubricating oil return pipeline of the generator 1, the outgoing busbar position of the generator 1, and the demineralized water tank of the generator 1. At each position, one gas sensor 7 can be arranged, or multiple gas sensors 7 can also be arranged. When the gas sensor 7 is welded to the lubricating oil return pipeline of the generator 1 by argon arc welding, it can be used to detect the sealing performance of the steam end seal assembly and the excitation end seal assembly. When the gas sensor 7 is arranged at the outgoing busbar position of the generator 1, it can be used to detect the sealing performance of the X-phase outgoing line, Y-phase outgoing line, Z-phase outgoing line, and neutral point outgoing line of the generator 1. Since hydrogen is the gas to be detected and has a light molecular mass, it basically exists at the top of the sealed space. When the gas sensor 7 is welded to the top of the demineralized water tank of the generator 1 by argon arc welding, it can be used to detect the hydrogen content in the demineralized water. Furthermore, it can realize all-round real-time monitoring of whether there is hydrogen leakage in the generator 1, and thus improve the accuracy of detecting the hydrogen concentration signal.

[0076] When the gas sensor 7 detects the hydrogen concentration signal, it can transmit the hydrogen concentration signal to the control unit 8. The control unit 8 can generate a first control signal according to the hydrogen concentration signal, and then control the alarm unit 9 to give an alarm through the first control signal, which can prompt the relevant operators that hydrogen leakage has occurred during the operation of the generator 1. Among them, the alarm unit 9 can be an audible and visual alarm or a liquid level alarm. In this regard, the embodiments of the present disclosure do not make specific limitations.

[0077] After the hydrogen concentration signal of the generator 1 is detected by the gas sensor 7, the control unit 8 can process the hydrogen concentration signal, and through the method of giving an alarm by the alarm unit 9, it can prompt the relevant operators that internal leakage has occurred during the operation of the generator 1, and make timely treatment, thereby reducing the occurrence of dangerous accidents and ensuring the safety of the generator 1 and the relevant operators.

[0078] In a possible manner, the control unit 8 includes a controller 17, an analog-to-digital conversion module, and a comparator 18. The gas sensor 7 is connected to the controller 17 through the analog-to-digital conversion module, and the controller 17 is respectively connected to the alarm unit 9 and the comparator 18;

[0079] The analog-to-digital conversion module is used to convert the hydrogen concentration signal into a hydrogen digital signal and transmit the hydrogen digital signal to the controller 17;

[0080] The controller 17 is used to transmit the hydrogen digital signal to the comparator 18;

[0081] The comparator 18 is configured to compare the hydrogen digital signal with a first preset threshold, and when the hydrogen digital signal is greater than the first preset threshold, transmit a first comparison signal to the controller 17;

[0082] The controller 17 is further configured to generate the first control signal when receiving the first comparison signal, and transmit the first control signal to the alarm unit 9.

[0083] It should be understood that the controller 17 can be a single-chip microcomputer of model STM32, and the embodiments of the present disclosure do not limit this. When the analog-to-digital conversion module can convert an analog signal into a digital signal. The comparator 18 can be a device for comparing multiple data.

[0084] As Figure 3 shown, the controller 17 can include an RS-232 / 485 serial port. The controller 17 can be connected to a terminal through the RS-232 / 485 serial port, and thus can transmit data to the terminal. The output end of the gas sensor 7 can be connected to the input end of the analog-to-digital conversion module, the output end of the analog-to-digital conversion module can be connected to the input end of the controller 17, and the controller 17 and the comparator 18 can be bidirectionally connected, that is, the output end of the controller 17 is connected to the input end of the comparator 18, and the output end of the comparator 18 is feedback-connected to the input end of the controller 17. Then when the comparator 18 receives the hydrogen digital signal, it can compare the hydrogen digital signal with the first preset threshold, and when the hydrogen digital signal is greater than the first preset threshold, feedback-transmit the first comparison signal to the controller 17. The controller 17 can generate a first control signal according to the received first comparison signal, and control the alarm unit 9 to give an alarm through the first control signal. Among them, the first preset threshold can be the maximum value of the hydrogen concentration signal during the operation of the generator 1. When the hydrogen concentration signal exceeds the first preset threshold, it can represent that there is a hydrogen internal leakage in the generator 1 at this time, and timely treatment is required, otherwise potential safety hazards may occur.

[0085] By setting the comparator 18 to feedback the first comparison signal to the controller 17, and then controlling the alarm unit 9 to give an alarm, it can prompt relevant operators that the generator 1 has an internal leakage during operation and perform timely treatment, thereby reducing the occurrence of dangerous accidents and ensuring the safety of the generator 1 and relevant operators.

[0086] In a possible manner, the control unit 8 further includes a display 14, and the input end of the display 14 is connected to the output end of the controller 17;

[0087] The controller 17 is configured to input the hydrogen concentration signal into the display 14;

[0088] The display 14 is used to display the hydrogen concentration signal.

[0089] It should be understood that, as Figure 3 shown, in the control unit 8, a display 14 may also be included. The input end of the display 14 may be connected to the output end of the controller 17. The controller 17 may transmit the hydrogen concentration signal to the display 14 for display, or transmit the hydrogen digital signal to the display 14 for display, so as to prompt relevant operators whether there is hydrogen leakage in the generator 1.

[0090] In a possible manner, the detection circuit further includes a pressure sensor 10 and a valve 15. The valve 15 is arranged on the demineralized water tank. The output end of the pressure sensor 10 is connected to the input end of the control unit 8;

[0091] The pressure sensor 10 is used to detect the pressure signal in the demineralized water tank and input the pressure signal into the control unit 8;

[0092] The control unit 8 is used to control the valve 15 to be in an open state when the pressure signal is greater than a second preset threshold, so that the demineralized water tank discharges gas outward.

[0093] It should be understood that the valve 15 can be a device for controlling the flow of fluid. It can be arranged in the demineralized water. There is a certain pressure in the demineralized water tank of the generator 1. When this pressure exceeds the second preset threshold, it can represent that the pressure in the demineralized water tank is too high and pressure reduction treatment needs to be carried out in time. Thus, when the pressure signal detected by the pressure sensor 10 in the demineralized water tank is greater than the second preset threshold, the control unit 8 can control the valve 15 to be in an open state, and then discharge the gas in the demineralized water tank outward, which can ensure the normal operation of the generator 1. Among them, the second preset threshold can be the maximum pressure value in the demineralized water tank during the normal operation of the generator 1.

[0094] By controlling the control unit 8 to control the valve 15 to be in an open state when the pressure signal is greater than the second preset threshold, the pressure in the demineralized water tank can be reduced. The stability and safety of the operation of the generator 1 can be ensured, and thus the occurrence of dangerous accidents can be reduced.

[0095] In a possible manner, the control unit 8 includes a controller 17, an analog-to-digital conversion module and a comparator 18. The pressure sensor 10 is connected to the controller 17 through the analog-to-digital conversion module. The controller 17 is respectively connected to the valve 15 and the comparator 18;

[0096] The analog-to-digital conversion module is used to convert the pressure signal into a pressure digital signal and transmit the pressure digital signal to the controller 17;

[0097] The controller 17 is configured to transmit the pressure digital signal to the comparator 18;

[0098] The comparator 18 is configured to compare the pressure digital signal with a second preset threshold, and when the pressure digital signal is greater than the second preset threshold, transmit a second comparison signal to the controller 17;

[0099] The controller 17 is further configured to control the valve 15 to be in an open state when receiving the second comparison signal, so that the demineralized water tank exhausts air outward.

[0100] It should be understood that the controller 17, the analog-to-digital converter 16, and the comparator 18 are the same as those described in the above embodiments, and will not be elaborated here. The output end of the pressure sensor 10 can be connected to the input end of the analog-to-digital conversion module.

[0101] As Figure 3 shown, when the comparator 18 receives the pressure digital signal, it can compare the pressure digital signal with the second preset threshold, and when the pressure digital signal is greater than the second preset threshold, feedback and transmit the second comparison signal to the controller 17. The controller 17 can control the valve 15 to be in an open state according to the received second comparison signal. Among them, the second preset threshold can be the maximum pressure value during the operation of the generator 1. When the pressure signal exceeds the second preset threshold, it can represent that there is a dangerous situation of excessive pressure in the demineralized water tank of the generator 1 at this time, and then relevant operators can be prompted to handle it in time, which can reduce the occurrence of hydrogen internal leakage and ensure the safety and stability of the operation of the generator 1.

[0102] Meanwhile, the controller 17 can also transmit the pressure digital signal to the display 14 for display, which can intuitively prompt relevant operators of the pressure value of the generator 1 during operation.

[0103] In a possible manner, the detection circuit further includes a liquid level sensor 11, and the output end of the liquid level sensor 11 is connected to the input end of the control unit 8;

[0104] The liquid level sensor 11 is configured to detect the liquid level signal in the demineralized water tank of the generator 1 and transmit the liquid level signal to the control unit 8;

[0105] The control unit 8 is configured to generate a second control signal according to the liquid level signal and input the second control signal into the alarm unit 9;

[0106] The alarm unit 9 is configured to give an alarm when receiving the second control signal.

[0107] It should be understood that during the normal operation of the generator 1, the liquid level in the stator cooling water tank of the generator 1 always remains within a stable range value. When the liquid level in the stator cooling water tank is not within this value range, it can represent that the stator cooling water tank cannot effectively cool the generator 1. Therefore, a liquid level sensor 11 for detecting the liquid level can be provided on the stator cooling water tank. After receiving this liquid level signal, the control unit 8 can generate a second control signal according to this liquid level signal and control the alarm unit 9 to give an alarm.

[0108] By setting the liquid level sensor 11 to detect the liquid level in the stator cooling water tank and generating a second control signal for controlling the alarm unit 9 to give an alarm according to the liquid level signal, it can be ensured in real time that the stator cooling water tank effectively cools the generator 1, and thus the stability and safety of the operation of the generator 1 can be ensured.

[0109] In a possible manner, the control unit 8 includes a controller 17, an analog-to-digital conversion module, and a comparator 18. The liquid level sensor 11 is connected to the controller 17 through the analog-to-digital conversion module. The controller 17 is respectively connected to the alarm unit 9 and the comparator 18;

[0110] The analog-to-digital conversion module is used to convert the liquid level signal into a liquid level digital signal and transmit the liquid level digital signal into the controller 17;

[0111] The controller 17 is used to transmit the liquid level digital signal into the comparator 18;

[0112] The comparator 18 is used to compare the liquid level digital signal with a third preset threshold value, and when the liquid level digital signal is less than the third preset threshold value, transmit a third comparison signal into the controller 17;

[0113] The controller 17 is further used to generate the second control signal when receiving the third comparison signal and transmit the second control signal into the alarm unit 9.

[0114] It should be understood that the controller 17, the analog-to-digital converter 16, and the comparator 18 are the same as the controller 17, the analog-to-digital converter 16, and the comparator 18 described in the above embodiment, and will not be elaborated here. The output end of the pressure sensor 10 can be connected to the input end of the analog-to-digital conversion module.

[0115] Such as Figure 3As shown, the output end of the liquid level sensor 11 can be connected to the input end of the analog-to-digital conversion module, and the output end of the analog-to-digital conversion module can be connected to the input end of the controller 17. The controller 17 and the comparator 18 can be bidirectionally connected, that is, the output end of the controller 17 is connected to the input end of the comparator 18, and the output end of the comparator 18 is feedback-connected to the input end of the controller 17. Further, when the comparator 18 receives the liquid level digital signal, it can compare the liquid level digital signal with the third preset threshold, and when the liquid level digital signal is greater than the third preset threshold, it feeds back and transmits the third comparison signal to the controller 17. The controller 17 can generate a second control signal according to the received third comparison signal, and control the alarm unit 9 to give an alarm through the second control signal. Among them, the third preset threshold can be the maximum value of the liquid level signal during the operation of the generator 1. When the liquid level signal exceeds the third preset threshold, it can indicate that the liquid level in the stator cooling water tank of the generator 1 is insufficient at this time and needs to be processed in time, otherwise potential safety hazards may occur.

[0116] In a possible manner, the detection circuit further includes a temperature sensor 12, and the output end of the temperature sensor 12 is connected to the input end of the control unit 8;

[0117] The temperature sensor 12 is used to detect the temperature signal of the generator 1 and transmit the temperature signal to the control unit 8;

[0118] The control unit 8 is used to generate a third control signal according to the temperature signal and input the third control signal into the alarm unit 9;

[0119] The alarm unit 9 is used to give an alarm when receiving the third control signal.

[0120] It should be understood that during the normal operation of the generator 1, the generator 1 will generate a certain amount of heat. When this heat exceeds a certain heat value, it may cause the generator 1 to be unable to operate normally and may reduce the service life of the generator 1. A temperature sensor 12 can be set on the generator 1 to detect the temperature signal of the generator 1 and input the temperature signal into the control unit 8. The control unit 8 generates a third control signal according to the temperature signal and controls the alarm unit 9 to give an alarm through the third control signal.

[0121] By setting the temperature sensor 12 on the generator 1, the temperature of the generator 1 can be monitored in real time, and thus the normal and stable operation of the generator 1 can be ensured.

[0122] Among possible ways, the control unit 8 includes a controller 17, an analog-to-digital conversion module, and a comparator 18. The temperature sensor is connected to the controller 17 through the analog-to-digital conversion module. The controller 17 is respectively connected to the alarm unit 9 and the comparator 18;

[0123] The analog-to-digital conversion module is configured to convert the temperature signal into a temperature digital signal and transmit the temperature digital signal into the controller 17;

[0124] The controller 17 is configured to transmit the temperature digital signal into the comparator 18;

[0125] The comparator 18 is configured to compare the temperature digital signal with a fourth preset threshold, and when the temperature digital signal is greater than the fourth preset threshold, transmit a fourth comparison signal to the controller 17;

[0126] The controller 17 is further configured to generate the third control signal when receiving the fourth comparison signal and transmit the third control signal to the alarm unit 9.

[0127] It should be understood that the controller 17, the analog-to-digital converter 16, and the comparator 18 are the same as those described in the above embodiments and will not be elaborated here. The output end of the pressure sensor 10 can be connected to the input end of the analog-to-digital conversion module.

[0128] As Figure 3 shown, the output end of the temperature sensor 12 can be connected to the input end of the analog-to-digital conversion module. Further, when the comparator 18 receives the temperature digital signal, it can compare the temperature digital signal with the fourth preset threshold, and when the temperature digital signal is greater than the fourth preset threshold, feedback and transmit the fourth comparison signal to the controller 17. The controller 17 can generate the third control signal according to the received fourth comparison signal and control the alarm unit 9 to give an alarm through the third control signal. Among them, the fourth preset threshold can be the maximum value of the temperature signal during the operation of the generator 1. When the temperature signal exceeds the fourth preset threshold, it can represent that the temperature of the generator 1 is abnormal at this time and needs to be processed in time, otherwise there may be potential safety hazards.

[0129] Among possible ways, the detection circuit further includes a humidity sensor 13, and the output end of the humidity sensor 13 is connected to the input end of the control unit 8;

[0130] The humidity sensor 13 is configured to detect the humidity signal of the generator 1 and transmit the humidity signal to the control unit 8;

[0131] The control unit 8 is configured to generate a fourth control signal according to the humidity signal and input the fourth control signal into the alarm unit 9;

[0132] The alarm unit 9 is configured to give an alarm when receiving the fourth control signal.

[0133] It should be understood that during the normal operation of the generator 1, the humidity is maintained within a certain range. When the humidity of the generator 1 exceeds a certain range, it may not be possible to ensure the normal operation or normal maintenance of the generator 1. Therefore, a humidity sensor 13 can be provided on the generator 1 to detect the humidity signal of the generator 1. And the humidity signal is transmitted to the control unit 8, and the control unit 8 generates a fourth control signal according to the humidity signal and controls the alarm unit 9 to give an alarm through the fourth control signal.

[0134] By providing a humidity sensor 13 on the generator 1 to detect the humidity of the generator 1, an alarm can be given when the humidity of the generator 1 is abnormal, thereby prompting the relevant operators that the humidity of the generator 1 is abnormal and corresponding treatment is required, which can ensure the safety and stability of the operation of the generator 1.

[0135] In a possible manner, the control unit 8 includes a controller 17, an analog-to-digital conversion module, and a comparator 18. The humidity sensor is connected to the controller 17 through the analog-to-digital conversion module, and the controller 17 is respectively connected to the alarm unit 9 and the comparator 18;

[0136] The analog-to-digital conversion module is configured to convert the humidity signal into a humidity digital signal and transmit the humidity digital signal into the controller 17;

[0137] The controller 17 is configured to transmit the humidity digital signal into the comparator 18;

[0138] The comparator 18 is configured to compare the humidity digital signal with a fifth preset threshold, and when the humidity digital signal is greater than the fifth preset threshold, transmit a fifth comparison signal into the controller 17;

[0139] The controller 17 is further configured to generate the fourth control signal when receiving the fifth comparison signal and transmit the fourth control signal into the alarm unit 9.

[0140] It should be understood that the controller 17, the analog-to-digital converter 16, and the comparator 18 are the same as the controller 17, the analog-to-digital converter 16, and the comparator 18 described in the above embodiments, and will not be elaborated here. The output end of the pressure sensor 10 can be connected to the input end of the analog-to-digital conversion module.

[0141] Such asFigure 3 As shown, the output end of the humidity sensor 13 can be connected to the input end of the analog-to-digital conversion module. Further, when the comparator 18 receives the humidity digital signal, it can compare the humidity digital signal with the fifth preset threshold, and when the humidity digital signal is greater than the fifth preset threshold, it feeds back and transmits the fifth comparison signal to the controller 17. The controller 17 can generate a fourth control signal according to the received fifth comparison signal, and control the alarm unit 9 to give an alarm through the fourth control signal. Among them, the fifth preset threshold can be the maximum value of the humidity signal during the operation of the generator 1. When the humidity signal exceeds the fifth preset threshold, it can indicate that the humidity of the generator 1 is abnormal at this time and needs to be processed in time, otherwise there may be potential safety hazards.

[0142] In a possible manner, the detection circuit further includes a memory 19, and the input end of the memory 19 is connected to the output end of the controller 17.

[0143] It should be understood that, as Figure 3 shown, the detection circuit further includes a memory 19, and the memory 19 can be used to store the data transmitted by the temperature sensor 12, the humidity sensor 13, the pressure sensor 10, the gas sensor 7, and the liquid level sensor 11.

[0144] Based on the same concept, this embodiment also discloses a generator 401, including the generator detection circuit 402 disclosed in this embodiment.

[0145] Figure 4 is a block diagram showing a generator 401 according to an exemplary embodiment. As Figure 4 shown, the generator 401 is provided with the generator detection circuit 402 provided in this embodiment.

[0146] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0147] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure does not separately describe various possible combination methods.

[0148] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A generator detection circuit, characterized in that: It comprises a control unit (8), a gas sensor (7) and an alarm unit (9); The output end of the gas sensor (7) is connected to the input end of the control unit (8), the output end of the control unit (8) is connected to the alarm unit (9), and the gas sensor (7) is arranged at least one position among the lubricating oil return pipeline of the generator (1), the outgoing bus position of the generator (1), and the fixed cooling water tank of the generator (1); The gas sensor (7) is used to detect the hydrogen concentration signal of the generator (1) and transmit the hydrogen concentration signal to the control unit (8); The control unit (8) is used to generate a first control signal according to the hydrogen concentration signal, and input the first control signal to the alarm unit (9); The alarm unit (9) is used to issue an alarm when receiving the first control signal.

2. The generator detection circuit according to claim 1, characterized in that: The control unit (8) comprises a controller (17), an analog-to-digital conversion module and a comparator (18); the gas sensor (7) is connected to the controller (17) via the analog-to-digital conversion module; and the controller (17) is connected to the alarm unit (9) and the comparator (18) respectively; The analog-to-digital conversion module is used to convert the hydrogen concentration signal into a hydrogen digital signal, and transmit the hydrogen digital signal to the controller (17); The controller (17) is used to transmit the hydrogen digital signal to the comparator (18); The comparator (18) is used to compare the hydrogen digital signal with a first preset threshold value, and transmit a first comparison signal to the controller (17) when the hydrogen digital signal is greater than the first preset threshold value; The controller (17) is further configured to generate the first control signal upon receiving the first comparison signal, and transmit the first control signal to the alarm unit (9).

3. The generator detection circuit according to claim 2, characterized in that: The control unit (8) further comprises a display (14), wherein an input end of the display (14) is connected to an output end of the controller (17); The controller (17) is used to input the hydrogen concentration signal into the display (14); The display (14) is used to display the hydrogen concentration signal.

4. The generator detection circuit according to claim 1, characterized in that: The detection circuit further comprises a pressure sensor (10) and a valve (15), wherein the valve (15) is arranged on the constant cooling water tank, and the output end of the pressure sensor (10) is connected to the input end of the control unit (8); The pressure sensor (10) is used to detect the pressure signal in the constant cooling water tank and input the pressure signal into the control unit (8); The control unit (8) is used to control the valve (15) to be in an open state when the pressure signal is greater than a second preset threshold value, so as to allow the cooling water tank to exhaust air to the outside.

5. The generator detection circuit according to claim 4, characterized in that: The control unit (8) comprises a controller (17), an analog-to-digital conversion module and a comparator (18); the pressure sensor (10) is connected to the controller (17) via the analog-to-digital conversion module; and the controller (17) is connected to the valve (15) and the comparator (18) respectively; The analog-to-digital conversion module is used to convert the pressure signal into a pressure digital signal and transmit the pressure digital signal to the controller (17); The controller (17) is used to transmit the pressure digital signal to the comparator (18); The comparator (18) is used to compare the pressure digital signal with a second preset threshold value, and transmit a second comparison signal to the controller (17) when the pressure digital signal is greater than the second preset threshold value; The controller (17) is further used to control the valve (15) to be in an open state when receiving the second comparison signal, so as to allow the cooling water tank to exhaust air to the outside.

6. The generator detection circuit according to claim 1, characterized in that: The detection circuit further comprises a liquid level sensor (11), the output end of the liquid level sensor (11) being connected to the input end of the control unit (8); The liquid level sensor (11) is used to detect a liquid level signal in a cooling water tank of the generator (1) and transmit the liquid level signal to the control unit (8); The control unit (8) is used to generate a second control signal according to the liquid level signal, and input the second control signal to the alarm unit (9); The alarm unit (9) is used to issue an alarm when receiving the second control signal.

7. The generator detection circuit according to claim 6, characterized in that: The control unit (8) comprises a controller (17), an analog-to-digital conversion module and a comparator (18); the liquid level sensor (11) is connected to the controller (17) via the analog-to-digital conversion module; and the controller (17) is connected to the alarm unit (9) and the comparator (18) respectively; The analog-to-digital conversion module is used to convert the liquid level signal into a liquid level digital signal, and transmit the liquid level digital signal to the controller (17); The controller (17) is used to transmit the liquid level digital signal to the comparator (18); The comparator (18) is used to compare the liquid level digital signal with a third preset threshold value, and transmit a third comparison signal to the controller (17) when the liquid level digital signal is less than the third preset threshold value; The controller (17) is further configured to generate the second control signal upon receiving the third comparison signal, and transmit the second control signal to the alarm unit (9).

8. The generator detection circuit according to claim 1, characterized in that: The detection circuit further comprises a temperature sensor (12), wherein an output end of the temperature sensor (12) is connected to an input end of the control unit (8); The temperature sensor (12) is used to detect a temperature signal of the generator (1) and transmit the temperature signal to the control unit (8); The control unit (8) is used to generate a third control signal according to the temperature signal, and input the third control signal to the alarm unit (9); The alarm unit (9) is used to issue an alarm when receiving the third control signal.

9. The generator detection circuit according to claim 8, characterized in that: The control unit (8) comprises a controller (17), an analog-to-digital conversion module and a comparator (18); the temperature sensor is connected to the controller (17) via the analog-to-digital conversion module; the controller (17) is respectively connected to the alarm unit (9) and the comparator (18); The analog-to-digital conversion module is used to convert the temperature signal into a temperature digital signal and transmit the temperature digital signal to the controller (17); The controller (17) is used to transmit the temperature digital signal to the comparator (18); The comparator (18) is used to compare the temperature digital signal with a fourth preset threshold value, and transmit a fourth comparison signal to the controller (17) when the temperature digital signal is greater than the fourth preset threshold value; The controller (17) is further configured to generate the third control signal upon receiving the fourth comparison signal, and transmit the third control signal to the alarm unit (9).

10. The generator detection circuit according to claim 1, characterized in that: The detection circuit further comprises a humidity sensor (13), the output end of the humidity sensor (13) being connected to the input end of the control unit (8); The humidity sensor (13) is used to detect a humidity signal of the generator (1) and transmit the humidity signal to the control unit (8); The control unit (8) is used to generate a fourth control signal according to the humidity signal, and input the fourth control signal to the alarm unit (9); The alarm unit (9) is used for issuing an alarm upon receiving the fourth control signal.

11. The generator detection circuit according to claim 10, characterized in that: The control unit (8) comprises a controller (17), an analog-to-digital conversion module and a comparator (18); the humidity sensor is connected to the controller (17) via the analog-to-digital conversion module; the controller (17) is respectively connected to the alarm unit (9) and the comparator (18); The analog-to-digital conversion module is used to convert the humidity signal into a humidity digital signal and transmit the humidity digital signal to the controller (17); The controller (17) is used to transmit the humidity digital signal to the comparator (18); The comparator (18) is used to compare the humidity digital signal with a fifth preset threshold value, and transmit a fifth comparison signal to the controller (17) when the humidity digital signal is greater than the fifth preset threshold value; The controller (17) is further configured to generate the fourth control signal upon receiving the fifth comparison signal, and transmit the fourth control signal to the alarm unit (9).

12. The generator detection circuit according to any one of claims 2, 3, 5, 7, 9 and 11, characterized in that: The detection circuit also includes a memory (19), and an input end of the memory (19) is connected to an output end of the controller (17).

13. A generator, characterized in that: The invention comprises a generator detection circuit as claimed in any one of claims 1 to 12.

Images