Water-turbine generator set operation temperature anomaly detection device

Abstract

The utility model discloses a water-turbine generator set operation temperature anomaly detection device, which relates to the technical field of temperature monitoring, and comprises a temperature detection module, a temperature detection module, a temperature detection module, a temperature detection module and a temperature detection module, and is characterized in that the temperature detection module is arranged in an area to be subjected to temperature measurement; the in-phase input end of the comparator is connected with the output end of the temperature detection module, and the inverted input end of the comparator is connected with the output end of the reference source module; the input end of the signal amplification module is connected with the output end of the comparator, the output end of the signal amplification module is connected with the control module, and the control module is connected with the prompt module. The voltage of the temperature detection module and the voltage of the reference source module are compared through the comparator, when the voltage value of the temperature detection module is higher than the voltage of the reference source module, it is indicated that the temperature is higher than the preset alarm temperature value, and the prompt module gives out an over-temperature prompt, so that workers can handle in time.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature monitoring, in particular to a device for detecting abnormal operating temperature of a water turbine generator set. Background Art

[0002] Renewable energy is a green and low-carbon energy. Using renewable energy to generate electricity can significantly reduce carbon emissions, save natural resources, and protect the ecological environment. Hydropower is an important renewable energy generation method and accounts for a high proportion of various renewable energy generation systems.

[0003] A hydroelectric generator is a generator that uses a turbine as the prime mover to convert water energy into electrical energy. When water flows through the turbine, it converts water energy into mechanical energy, and the turbine's shaft drives the generator's rotor, converting mechanical energy into electrical energy for output. It is the main power equipment for hydropower stations to produce electricity.

[0004] When the turbine generator set is working, the bearing temperature and vibration amplitude will be abnormal. When the temperature of any bearing of the turbine unit rises to the accident temperature, in order to avoid burning the bearing shell, the high bearing temperature accident must be dealt with urgently in time. When the existing turbine is used in conjunction with the generator, it is often lacking a device for detecting the temperature. Utility Model Content

[0005] The purpose of the utility model is to provide a device for detecting abnormal operating temperature of a hydro-turbine generator set. The present application compares the voltage of a temperature detection module with the voltage of a reference source module through a comparator. When the voltage value of the temperature detection module is higher than the voltage of the reference source module, it indicates that the temperature is higher than a preset alarm temperature value, and the prompt module issues an over-temperature prompt so that the staff can handle it in time.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] One aspect of an embodiment of the utility model provides a device for detecting abnormal operating temperature of a hydro-turbine generator set, the detection device comprising: a temperature detection module, the temperature detection module being arranged in a temperature zone to be measured of the hydro-turbine generator set; a comparator and a reference source module, the in-phase input end of the comparator being connected to the output end of the temperature detection module, the inverting input end of the comparator being connected to the output end of the reference source module; a signal amplification module, a control module and a prompt module, the input end of the signal amplification module being connected to the output end of the comparator, the output end of the signal amplification module being connected to the control module, and the control module being connected to the prompt module.

[0008] In some embodiments, the temperature detection module includes a thermistor, a first resistor and a second resistor, one end of the thermistor is connected to a first power supply, the other end of the thermistor is connected to one end of the first resistor and one end of the second resistor, the other end of the first resistor is connected to the non-inverting input of the comparator, and the other end of the second resistor is grounded.

[0009] In some embodiments, the reference source module includes a first transistor, a voltage-stabilizing diode, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor and a seventh resistor, the collector of the first transistor and one end of the third resistor are connected to a second power supply, the base of the first transistor and the other end of the third resistor are connected to the negative electrode of the voltage-stabilizing diode and one end of the seventh resistor, the positive electrode of the voltage-stabilizing diode is grounded, the other end of the seventh resistor and the emitter of the first transistor are connected to one end of the fourth resistor, the other end of the fourth resistor is connected to one end of the fifth resistor and one end of the sixth resistor, the other end of the fifth resistor is connected to the inverting input of the comparator, and the other end of the sixth resistor is grounded.

[0010] In some embodiments, the reference source module also includes a second transistor, an eighth resistor and a ninth resistor, the collector of the second transistor is connected to the base of the first transistor, the emitter of the second transistor is connected to the cathode of the voltage zener diode and one end of the seventh resistor, the base of the second transistor is connected to one end of the eighth resistor and one end of the ninth resistor, the other end of the eighth resistor is connected to the emitter of the first transistor, and the other end of the ninth resistor is grounded.

[0011] In some embodiments, the reference source module also includes a first capacitor and a second capacitor, one end of the first capacitor is connected to the base of the first transistor, one end of the second capacitor is connected to the emitter of the first transistor, and the other end of the first capacitor and the other end of the second capacitor are both grounded.

[0012] In some embodiments, the signal amplification module includes a third transistor, a tenth resistor, an eleventh resistor and a third capacitor, the base of the third transistor is connected to one end of the tenth resistor and one end of the third capacitor, the other end of the tenth resistor is connected to the output end of the comparator, the other end of the third capacitor is grounded, the collector of the third transistor is connected to the control module, and the emitter of the third transistor is grounded through the eleventh resistor.

[0013] In some embodiments, the temperature detection module also includes a fourth transistor and a twelfth resistor, the collector of the fourth transistor is connected to the other end of the thermistor and one end of the first resistor, the emitter of the fourth transistor is grounded through the second resistor, and the base of the fourth transistor is connected to the control module through the twelfth resistor.

[0014] In some embodiments, the prompt module includes a fifth transistor, a speaker, a thirteenth resistor and a fourteenth resistor, the collector of the fifth transistor is connected to the first power supply through the thirteenth resistor, the base of the fifth transistor is connected to the control module, the emitter of the fifth transistor is connected to one end of the fourteenth resistor, the other end of the fourteenth resistor is connected to the positive pole of the speaker, and the negative pole of the speaker is grounded.

[0015] In some embodiments, the prompt module further includes a diode, the cathode of the diode is connected to the anode of the speaker, and the anode of the diode is grounded.

[0016] In some embodiments, the prompt module further includes a fifteenth resistor and a prompt light, the positive electrode of the prompt light is connected to the emitter of the fifth transistor through the fifteenth resistor, and the negative electrode of the prompt light is grounded.

[0017] According to the embodiment of the utility model, a device for detecting abnormal operating temperature of a hydro-generator set has at least the following beneficial effects: the application compares the voltage of the temperature detection module and the voltage of the reference source module through a comparator. When the voltage value of the temperature detection module is higher than the voltage of the reference source module, it means that the temperature is higher than the preset alarm temperature value, and the prompt module issues an over-temperature prompt so that the staff can handle it in time. The reference source module adopts the feedback voltage stabilization method of the first triode and the second triode, and also adopts a voltage stabilization diode to assist in voltage stabilization, thereby improving the voltage stability of the reference source module.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 is a partial circuit schematic diagram of a temperature anomaly detection device according to an embodiment;

[0021] Figure 2is a circuit schematic diagram of a reference source module according to an embodiment;

[0022] Figure 3 4 is a circuit schematic diagram of a prompt module according to an embodiment. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that the description of the present disclosure will be more comprehensive and complete and the concepts of the example embodiments will be fully conveyed to those skilled in the art. The accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0027] The technical solution of the embodiment of the present application is briefly described below:

[0028] According to some embodiments, Figure 1 As shown, the present application provides a device for detecting abnormal operating temperature of a hydro-generator set, the detection device comprising:

[0029] A temperature detection module, which is arranged in a temperature-to-be-measured zone of the hydro-generator set;

[0030] A comparator U and a reference source module, wherein the in-phase input terminal of the comparator U is connected to the output terminal of the temperature detection module, and the inverting input terminal of the comparator U is connected to the output terminal of the reference source module;

[0031] A signal amplification module, a control module and a prompt module, wherein the input end of the signal amplification module is connected to the output end of the comparator U, the output end of the signal amplification module is connected to the control module, and the control module is connected to the prompt module.

[0032] Based on the working principle of the above embodiment, when the voltage value of the temperature detection module is lower than the voltage value of the reference source module, it means that the temperature is lower than the preset alarm temperature value, the control module determines that the operating temperature of the hydro-generator set is normal, and the prompt module does not work. When the voltage value of the temperature detection module is higher than the voltage value of the reference source module, it means that the temperature is higher than the preset alarm temperature value, the control module determines that the operating temperature of the hydro-generator set is too high, the prompt module works, and issues an over-temperature prompt. This allows the staff to handle it in a timely manner.

[0033] The following is combined with the appendix of this manual Figures 1 to 3 , the preferred implementation modes of the present disclosure are further elaborated in detail.

[0034] According to some embodiments, Figure 1 As shown, the temperature detection module includes a thermistor RT, a first resistor R1 and a second resistor R2, one end of the thermistor RT is connected to the first power supply V1, the other end of the thermistor RT is connected to one end of the first resistor R1 and one end of the second resistor R2, the other end of the first resistor R1 is connected to the in-phase input end of the comparator U, and the other end of the second resistor R2 is grounded.

[0035] Based on the working principle of the above embodiment, when the temperature is low, the resistance of the thermistor RT is high, and the voltage value of the temperature detection module is lower than the voltage value of the reference source module; when the temperature is high, the resistance of the thermistor RT is low, and the voltage value of the temperature detection module is higher than the voltage value of the reference source module.

[0036] According to some embodiments, Figure 2As shown, the reference source module includes a first transistor Q1, a voltage-stabilizing diode DZ, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a seventh resistor R7. The collector of the first transistor Q1 and one end of the third resistor R3 are connected to the second power supply V3, the base of the first transistor Q1 and the other end of the third resistor R3 are connected to the negative electrode of the voltage-stabilizing diode DZ and one end of the seventh resistor R7, the positive electrode of the voltage-stabilizing diode DZ is grounded, the other end of the seventh resistor R7 and the emitter of the first transistor Q1 are connected to one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to one end of the fifth resistor R5 and one end of the sixth resistor R6, the other end of the fifth resistor R5 is connected to the inverting input end of the comparator U, and the other end of the sixth resistor R6 is grounded.

[0037] The first transistor Q1, the voltage stabilizing diode DZ, the third resistor R3 and the seventh resistor R7 form a voltage stabilizing device, so that the voltage of the reference source module is stable. The fourth resistor R4 is used for current limiting, and the fifth resistor R5 and the sixth resistor R6 are used for voltage division.

[0038] Further, such as Figure 2 As shown, in addition to the above embodiments, the reference source module also includes a second transistor Q2, an eighth resistor R8 and a ninth resistor R9, the collector of the second transistor Q2 is connected to the base of the first transistor Q1, the emitter of the second transistor Q2 is connected to the cathode of the voltage-stabilizing diode DZ and one end of the seventh resistor R7, the base of the second transistor Q2 is connected to one end of the eighth resistor R8 and one end of the ninth resistor R9, the other end of the eighth resistor R8 is connected to the emitter of the first transistor Q1, and the other end of the ninth resistor R9 is grounded.

[0039] Based on the working principle of the above embodiment, when the emitter output of the first transistor Q1 is high, the second transistor Q2 increases the output, the base of the first transistor Q1 is pulled down, and the first transistor Q1 reduces the output; when the emitter output of the first transistor Q1 is low, the second transistor Q2 reduces the output, the base of the first transistor Q1 is pulled up by the third resistor R3, and the first transistor Q1 increases the output. The reference source module of the present application adopts the feedback voltage stabilization method of the first transistor Q1 and the second transistor Q2, and also adopts the voltage stabilization diode DZ to assist in voltage stabilization, thereby improving the voltage stability of the reference source module. Among them, the eighth resistor R8 and the ninth resistor R9 are used for voltage division.

[0040] Further, such as Figure 2 As shown, in addition to the above embodiments, the reference source module also includes a first capacitor C1 and a second capacitor C2, one end of the first capacitor C1 is connected to the base of the first transistor Q1, one end of the second capacitor C2 is connected to the emitter of the first transistor Q1, and the other end of the first capacitor C1 and the other end of the second capacitor C2 are both grounded.

[0041] According to some embodiments, Figure 1 As shown, the signal amplification module includes a third transistor Q3, a tenth resistor R10, an eleventh resistor R11 and a third capacitor C3, the base of the third transistor Q3 is connected to one end of the tenth resistor R10 and one end of the third capacitor C3, the other end of the tenth resistor R10 is connected to the output end of the comparator U, the other end of the third capacitor C3 is grounded, the collector of the third transistor Q3 is connected to the temperature detection pin 101 of the control module, and the emitter of the third transistor Q3 is grounded through the eleventh resistor R11.

[0042] Specifically, it also includes a sixteenth resistor R16 and a seventeenth resistor R17, the temperature detection pin 101 of the control module is also connected to one end of the sixteenth resistor R16 and one end of the seventeenth resistor R17, the other end of the sixteenth resistor R16 is connected to the third power supply V3, and the other end of the seventeenth resistor R17 is grounded. The sixteenth resistor R16 and the seventeenth resistor R17 are used for voltage division.

[0043] When the voltage value of the temperature detection module is lower than the voltage value of the reference source module, the comparator U outputs a low-level signal, the third transistor Q3 is cut off, and the control module receives a high-level signal through the temperature detection pin 101. The control module determines that the operating temperature of the hydro-generator set is normal and the prompt module does not work.

[0044] When the voltage value of the temperature detection module is higher than the voltage value of the reference source module, the comparator U outputs a high-level signal, the third transistor Q3 is turned on, and the temperature detection pin 101 of the control module is pulled down. The control module receives a low-level signal through the temperature detection pin 101, and the control module determines that the operating temperature of the turbine generator set is too high, and the prompt module works and issues an over-temperature prompt, so that the staff can handle it in time.

[0045] According to some embodiments, Figure 1 As shown, the temperature detection module also includes a fourth transistor Q4 and a twelfth resistor R12, the collector of the fourth transistor Q4 is connected to the other end of the thermistor RT and one end of the first resistor R1, the emitter of the fourth transistor Q4 is grounded through the second resistor R2, and the base of the fourth transistor Q4 is connected to the adjustment pin 103 of the control module through the twelfth resistor R12.

[0046] When the preset alarm temperature value needs to be modified, the control module can control the conduction state of the fourth transistor Q4 to achieve this. When the alarm temperature value needs to be increased, the control module outputs a higher level signal to the base of the fourth transistor Q4, and the fourth transistor Q4 increases the output; when the alarm temperature value needs to be reduced, the control module outputs a lower level signal to the base of the fourth transistor Q4, and the fourth transistor Q4 reduces the output.

[0047] According to some embodiments, Figure 3 As shown, the prompt module includes a fifth transistor Q5, a speaker LS, a thirteenth resistor R13 and a fourteenth resistor R14, the collector of the fifth transistor Q5 is connected to the first power supply V1 through the thirteenth resistor R13, the base of the fifth transistor Q5 is connected to the prompt output pin 102 of the control module, the emitter of the fifth transistor Q5 is connected to one end of the fourteenth resistor R14, the other end of the fourteenth resistor R14 is connected to the positive electrode of the speaker LS, and the negative electrode of the speaker LS is grounded.

[0048] Based on the working principle of the above embodiment, when the voltage value of the temperature detection module is lower than the voltage value of the reference source module, it means that the temperature is lower than the preset alarm temperature value, the control module determines that the operating temperature of the hydro-generator set is normal, the control module outputs a low-level signal to the base of the fifth transistor Q5, and the speaker LS does not work.

[0049] When the voltage value of the temperature detection module is higher than the voltage value of the reference source module, it means that the temperature is higher than the preset alarm temperature value, and the control module determines that the operating temperature of the hydro-generator set is too high. The control module outputs a high level to the base of the fifth transistor Q5, and the speaker LS is powered on to prompt the staff to handle it in time.

[0050] According to some embodiments, Figure 3 As shown, the prompt module also includes a diode D, the cathode of the diode D is connected to the anode of the speaker LS, and the anode of the diode D is grounded. When the speaker LS is turned off from the alarm state, a low-level signal is output to the base of the fifth transistor Q5, the speaker LS loses power, and the inductive element inside the speaker LS continues current through the diode D, which can increase the service life of the speaker LS.

[0051] According to some embodiments, Figure 3 As shown, the prompt module further includes a fifteenth resistor R15 and a prompt light LED, the anode of the prompt light LED is connected to the emitter of the fifth transistor Q5 through the fifteenth resistor R15, and the cathode of the prompt light LED is grounded.

[0052] Based on the working principle of the above embodiment, when the voltage value of the temperature detection module is lower than the voltage value of the reference source module, it means that the temperature is lower than the preset alarm temperature value, and the control module determines that the operating temperature of the hydro-generator set is normal. The control module outputs a low-level signal to the base of the fifth transistor Q5, and the speaker LS and the warning light LED do not work.

[0053] When the voltage value of the temperature detection module is higher than the voltage value of the reference source module, it means that the temperature is higher than the preset alarm temperature value. The control module determines that the operating temperature of the turbine generator set is too high. The control module outputs a high level to the base of the fifth transistor Q5, and the speaker LS and the warning light LED are powered on. This provides an audible and visual alarm to prompt the staff to handle it in time.

[0054] The present application compares the voltage of the temperature detection module with the voltage of the reference source module through a comparator U. When the voltage value of the temperature detection module is higher than the voltage of the reference source module, it means that the temperature is higher than the preset alarm temperature value, and the prompt module issues an over-temperature prompt so that the staff can handle it in time. The reference source module adopts the feedback voltage stabilization method of the first transistor Q1 and the second transistor Q2, and also adopts the voltage stabilization diode DZ to assist in voltage stabilization, thereby improving the voltage stability of the reference source module.

[0055] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0056] Although the present disclosure has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present disclosure can be implemented in a variety of forms without departing from the spirit or essence of the present application, it should be understood that the above-mentioned embodiments are not limited to any of the foregoing details, but should be widely interpreted within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A device for detecting abnormal operating temperature of a hydro-generator set, characterized in that: The detection device comprises: A temperature detection module, wherein the temperature detection module is arranged in a temperature-to-be-measured zone of the hydro-generator set; A comparator and a reference source module, wherein the non-inverting input end of the comparator is connected to the output end of the temperature detection module, and the inverting input end of the comparator is connected to the output end of the reference source module; A signal amplification module, a control module and a prompt module, wherein the input end of the signal amplification module is connected to the output end of the comparator, the output end of the signal amplification module is connected to the control module, and the control module is connected to the prompt module.

2. The detection device according to claim 1, characterized in that: The temperature detection module includes a thermistor, a first resistor and a second resistor, one end of the thermistor is connected to a first power supply, the other end of the thermistor is connected to one end of the first resistor and one end of the second resistor, the other end of the first resistor is connected to the non-inverting input end of the comparator, and the other end of the second resistor is grounded.

3. The detection device according to claim 1, characterized in that: The reference source module includes a first transistor, a voltage-stabilizing diode, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor and a seventh resistor. The collector of the first transistor and one end of the third resistor are connected to a second power supply, the base of the first transistor and the other end of the third resistor are connected to the negative electrode of the voltage-stabilizing diode and one end of the seventh resistor, the positive electrode of the voltage-stabilizing diode is grounded, the other end of the seventh resistor and the emitter of the first transistor are connected to one end of the fourth resistor, the other end of the fourth resistor is connected to one end of the fifth resistor and one end of the sixth resistor, the other end of the fifth resistor is connected to the inverting input of the comparator, and the other end of the sixth resistor is grounded.

4. The detection device according to claim 3, characterized in that: The reference source module also includes a second transistor, an eighth resistor and a ninth resistor, the collector of the second transistor is connected to the base of the first transistor, the emitter of the second transistor is connected to the cathode of the voltage zener diode and one end of the seventh resistor, the base of the second transistor is connected to one end of the eighth resistor and one end of the ninth resistor, the other end of the eighth resistor is connected to the emitter of the first transistor, and the other end of the ninth resistor is grounded.

5. The detection device according to claim 4, characterized in that: The reference source module also includes a first capacitor and a second capacitor, one end of the first capacitor is connected to the base of the first transistor, one end of the second capacitor is connected to the emitter of the first transistor, and the other end of the first capacitor and the other end of the second capacitor are both grounded.

6. The detection device according to claim 1, characterized in that: The signal amplification module includes a third transistor, a tenth resistor, an eleventh resistor and a third capacitor, the base of the third transistor is connected to one end of the tenth resistor and one end of the third capacitor, the other end of the tenth resistor is connected to the output end of the comparator, the other end of the third capacitor is grounded, the collector of the third transistor is connected to the control module, and the emitter of the third transistor is grounded through the eleventh resistor.

7. The detection device according to claim 2, characterized in that: The temperature detection module also includes a fourth transistor and a twelfth resistor, the collector of the fourth transistor is connected to the other end of the thermistor and one end of the first resistor, the emitter of the fourth transistor is grounded through the second resistor, and the base of the fourth transistor is connected to the control module through the twelfth resistor.

8. The detection device according to claim 1, characterized in that: The prompt module includes a fifth transistor, a speaker, a thirteenth resistor and a fourteenth resistor. The collector of the fifth transistor is connected to the first power supply through the thirteenth resistor, the base of the fifth transistor is connected to the control module, the emitter of the fifth transistor is connected to one end of the fourteenth resistor, the other end of the fourteenth resistor is connected to the positive electrode of the speaker, and the negative electrode of the speaker is grounded.

9. The detection device according to claim 8, characterized in that: The prompt module further includes a diode, a cathode of the diode is connected to the anode of the speaker, and the anode of the diode is grounded.

10. The detection device according to claim 8, characterized in that: The prompt module further includes a fifteenth resistor and a prompt light, wherein the positive electrode of the prompt light is connected to the emitter of the fifth transistor through the fifteenth resistor, and the negative electrode of the prompt light is grounded.

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