Gas turbine trip device and system

Abstract

The application relates to a gas turbine tripping device and system, which comprises a button tripping module, a logic tripping module, a reset lock module and a power module; the first end of the button tripping module is connected with the first end of the reset lock module and the positive end of the power module respectively, the second end of the button tripping module is connected with the first end of the logic tripping module, the second end of the logic tripping module is connected with the second end of the reset lock module, the third end of the reset lock module is used as the positive end connected with the wiring end of a tripping electromagnetic valve, and the fourth end of the reset lock module is connected with the negative end of the power module and used as the negative end connected with the wiring end of the tripping electromagnetic valve. The device can disconnect the electric connection between the power module and the tripping electromagnetic valve through the button tripping module and the logic tripping module, the reset lock module can keep the electric connection in a power-off lock state or restore normality, so that the gas turbine is protected.

Description

Technical Field

[0001] This application relates to the field of gas turbine technology, and in particular to a gas turbine tripping device and system. Background Technology

[0002] Currently, if a gas turbine malfunctions during operation, the fuel valve needs to be quickly shut off to cut off the fuel supply, causing the gas turbine to trip in an emergency and ensuring its safe operation. Gas turbines are equipped with trip solenoid valve assemblies. Controlling the opening and closing of these solenoid valve assemblies controls the opening and closing of the fuel valves, thereby controlling the gas turbine to trip.

[0003] However, the gas turbine tripping device in the relevant technology cannot keep the solenoid valve group in a de-energized state after tripping, and the tripping solenoid valve group may be falsely triggered due to abnormal operation of the gas turbine tripping device. Summary of the Invention

[0004] This application aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the first objective of this application is to provide a gas turbine tripping device.

[0006] The second objective of this application is to provide a gas turbine tripping system.

[0007] To achieve the above objectives, a first aspect of this application provides a gas turbine tripping device, comprising: a push-button tripping module, a logic tripping module, a reset interlocking module, and a power supply module; wherein, a first terminal of the push-button tripping module is connected to both a first terminal of the reset interlocking module and the positive terminal of the power supply module; a second terminal of the push-button tripping module is connected to a first terminal of the logic tripping module; a second terminal of the logic tripping module is connected to a second terminal of the reset interlocking module; and a third terminal of the reset interlocking module serves as the positive terminal connected to the wiring terminal of a tripping solenoid valve. The fourth terminal is connected to the negative terminal of the power module and serves as the negative terminal connected to the trip solenoid valve; wherein, the button trip module is used to disconnect the electrical connection between the power module and the trip solenoid valve when pressed; the logic trip module is used to disconnect the electrical connection between the power module and the trip solenoid valve when a trip signal is received; the reset lockout module is used to connect the electrical connection between the power module and the trip solenoid valve when a reset signal is received, and to maintain a power-off lockout state when the electrical connection between the power module and the trip solenoid valve is disconnected.

[0008] The gas turbine tripping device of this application embodiment includes: a push-button tripping module, a logic tripping module, a reset interlocking module, and a power supply module; wherein, the first end of the push-button tripping module is connected to the first end of the reset interlocking module and the positive terminal of the power supply module respectively, the second end of the push-button tripping module is connected to the first end of the logic tripping module, the second end of the logic tripping module is connected to the second end of the reset interlocking module, the third end of the reset interlocking module serves as the positive terminal connected to the wiring terminal of the tripping solenoid valve, and the fourth end of the reset interlocking module is connected to the negative terminal of the power supply module and serves as the negative terminal connected to the wiring terminal of the tripping solenoid valve; wherein, the push-button tripping module is used to disconnect the electrical connection between the power supply module and the tripping solenoid valve when pressed; the logic tripping module is used to disconnect the electrical connection between the power supply module and the tripping solenoid valve when a tripping signal is received; the reset interlocking module is used to connect the electrical connection between the power supply module and the tripping solenoid valve when a reset signal is received, and to maintain a power-off interlocking state when the electrical connection between the power supply module and the tripping solenoid valve is disconnected. Therefore, when the gas turbine trip device is pressed or receives a trip signal, it disconnects the electrical connection between the power supply module and the trip solenoid valve and maintains a power-off lockout state. Upon receiving a reset signal, it restores the electrical connection between the power supply module and the trip solenoid valve. This system can maintain the gas turbine trip device in a power-off lockout state after power loss, preventing abnormal operation and thus protecting the gas turbine.

[0009] In addition, the gas turbine tripping device proposed in this application embodiment may also have the following additional technical features:

[0010] According to one embodiment of this application, the reset lockout module includes: a reset button, the first end of which serves as the first end of the reset lockout module; an intermediate relay, the first end of a switch in the intermediate relay being connected to the first end of the reset button, the first end of a coil in the intermediate relay being connected to the second end of the reset button, and the second end of the coil in the intermediate relay being connected to the negative terminal of the power supply module; a holding relay, the first end of a switch in the holding relay being connected to the first end of the reset button; a reset relay, the first end of a switch in the reset relay serving as the second end of the reset lockout module, the second end of a switch in the reset relay being connected to the first end of the coil in the holding relay and serving as the third end of the reset lockout module, the first end of the coil in the reset relay being connected to the second end of the switch in the holding relay and the second end of the switch in the intermediate relay, and the second end of the coil in the reset relay being connected to the second end of the coil in the intermediate relay and the second end of the coil in the holding relay and then connected to the negative terminal of the power supply module, and serving as the fourth end of the reset lockout module.

[0011] According to one embodiment of this application, the button tripping module includes: at least one tripping button; wherein, one end of the tripping buttons connected in parallel serves as the first end of the button tripping module, and the other end of the tripping buttons connected in parallel serves as the second end of the button tripping module.

[0012] According to one embodiment of this application, the logic trip module includes: at least one logic trip switch; wherein, each of the logic trip switches is connected in series, one end of the series connection serves as the first end of the logic trip module, and the other end of the series connection serves as the second end of the logic trip module.

[0013] According to one embodiment of this application, the gas turbine tripping device further includes: a first status monitoring module, a first end of the first status monitoring module being connected to a second end of the button tripping module, and the second end of the first status monitoring module being connected to the negative terminal of the power supply module, for monitoring the status of the button tripping module.

[0014] According to one embodiment of this application, the first state monitoring module includes: a first state relay, wherein a first end of the first state relay serves as a first end of the first state monitoring module, and a second end of the first state relay serves as a second end of the first state monitoring module; and a first indicator light, wherein a first end of the first indicator light is connected to the first end of the first state relay, and a second end of the first indicator light is connected to the second end of the first state relay.

[0015] According to one embodiment of this application, the gas turbine tripping device further includes: at least one second state monitoring module, the first end of each second state monitoring module being connected to one end of each logic tripping switch in the logic tripping module, and the second end of each second state monitoring module being connected to the negative terminal of the power supply module, for monitoring the state of each logic tripping switch.

[0016] According to one embodiment of this application, each of the second state monitoring modules includes: a second state relay, wherein a first terminal of the second state relay serves as a first terminal of the second state monitoring module, and a second terminal of the second state relay serves as a second terminal of the second state monitoring module; and a second indicator light, wherein a first terminal of the second indicator light is connected to a first terminal of the second state relay, and a second terminal of the second indicator light is connected to a second terminal of the second state relay.

[0017] According to one embodiment of this application, the gas turbine tripping device further includes: a third state monitoring module, the first end of which is connected to the second end of the reset interlocking module, and the second end of which is connected to the negative terminal of the power supply module, for monitoring the state of the switch in the reset relay.

[0018] To achieve the above objectives, a second aspect of this application provides a gas turbine tripping system, comprising: at least one gas turbine tripping device as described in the first aspect of this application and a tripping solenoid valve group; wherein the tripping solenoid valve group comprises a plurality of tripping solenoid valves, each of the tripping solenoid valves being connected to the gas turbine tripping device, and each of the gas turbine tripping devices being used to connect or disconnect the electrical connection between the power module and the tripping solenoid valve.

[0019] The gas turbine tripping system of this application includes at least one gas turbine tripping device as described in the first aspect of the application and a tripping solenoid valve group. The tripping solenoid valve group includes multiple tripping solenoid valves, each connected to the gas turbine tripping device. Each gas turbine tripping device is used to connect or disconnect the electrical connection between the power module and the tripping solenoid valve. Therefore, the system can maintain the gas turbine tripping device in a power-off locked state after power loss, preventing abnormal operation and avoiding accidental triggering of the tripping solenoid valves that could damage the gas turbine, thus achieving protection of the gas turbine.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0022] Figure 1 This is a schematic diagram of the structure of a gas turbine tripping device according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of a gas turbine tripping device according to an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the structure of a gas turbine tripping system according to an embodiment of this application. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0026] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0027] The following description, with reference to the accompanying drawings, describes a gas turbine tripping device and a gas turbine tripping system according to embodiments of this application.

[0028] Currently, during gas turbine operation, if a malfunction occurs, the fuel valve needs to be quickly shut off to cut off the fuel supply, causing the gas turbine to trip in an emergency and ensuring its safe operation. Gas turbines are equipped with trip solenoid valve assemblies, which control the opening and closing of the fuel valves to achieve the purpose of tripping the gas turbine. However, in related technologies, the gas turbine tripping device cannot keep the solenoid valve assembly in a de-energized state after tripping, which may lead to false triggering of the trip solenoid valve assembly due to abnormal operation of the gas turbine tripping device.

[0029] Based on this, this application proposes a novel gas turbine tripping device. When pressed or upon receiving a tripping signal, this device disconnects the electrical connection between the power supply module and the tripping solenoid valve, maintaining a power-off lockout state. Upon receiving a reset signal, it restores the electrical connection between the power supply module and the tripping solenoid valve. This system can maintain the gas turbine tripping device in a power-off lockout state after power loss, preventing abnormal operation and thus protecting the gas turbine.

[0030] Figure 1 This is a schematic diagram of the structure of a gas turbine tripping device according to an embodiment of this application.

[0031] like Figure 1 As shown, the gas turbine tripping device 100 includes: a button tripping module 101, a logic tripping module 102, a reset interlocking module 103, and a power supply module 104.

[0032] In this circuit breaker module, the first terminal of the push-button trip module 101 is connected to the first terminal of the reset interlock module 103 and the positive terminal of the power supply module 104. The second terminal of the push-button trip module 101 is connected to the first terminal of the logic trip module 102. The second terminal of the logic trip module 102 is connected to the second terminal of the reset interlock module 103. The third terminal of the reset interlock module 103 serves as the positive terminal connected to the trip solenoid valve 105. The fourth terminal of the reset interlock module 103 is connected to the negative terminal of the power supply module 104 and serves as the positive terminal connected to the trip solenoid valve 105. The negative terminal of the terminal is connected; wherein, the push-button trip module 101 is used to disconnect the electrical connection between the power module 104 and the trip solenoid valve 105 when it is pressed; the logic trip module 102 is used to disconnect the electrical connection between the power module 104 and the trip solenoid valve 105 when a trip signal is received; the reset lockout module 103 is used to connect the electrical connection between the power module 104 and the trip solenoid valve 105 when a reset signal is received, and to maintain the power-off lockout state when the electrical connection between the power module 104 and the trip solenoid valve 105 is disconnected.

[0033] In this embodiment, the power module 104 supplies power to the trip solenoid valve 105. When an emergency failure occurs in the gas turbine, pressing the button trip module 101 disconnects the electrical connection between the power module 104 and the trip solenoid valve 105; or, a trip signal is sent to the logic trip module 102, which disconnects the electrical connection between the power module 104 and the trip solenoid valve 105 upon receiving the trip signal; or, pressing the button trip module 101 and sending a trip signal to the logic trip module 102 are performed simultaneously to disconnect the electrical connection between the power module 104 and the trip solenoid valve 105.

[0034] When the electrical connection between the power supply module 104 and the trip solenoid valve 105 is disconnected, the reset lockout module 103 maintains its de-energized lockout state to prevent the trip solenoid valve 105 from being falsely triggered by other signals. After the push-button trip module 101 and / or logic trip module 102 of the gas turbine trip device 100 return to normal, a reset signal is sent to the reset lockout module 103. The reset lockout module 103 restores the electrical connection between the power supply module 104 and the trip solenoid valve 105, and the trip solenoid valve 105 is energized.

[0035] The gas turbine tripping device of this application includes: a push-button tripping module, a logic tripping module, a reset interlocking module, and a power supply module. The first end of the push-button tripping module is connected to both the first end of the reset interlocking module and the positive terminal of the power supply module. The second end of the push-button tripping module is connected to the first end of the logic tripping module, and the second end of the logic tripping module is connected to the second end of the reset interlocking module. The third end of the reset interlocking module serves as the positive terminal connected to the wiring terminal of the tripping solenoid valve. The fourth end of the reset interlocking module is connected to the negative terminal of the power supply module and serves as the negative terminal connected to the wiring terminal of the tripping solenoid valve. The push-button tripping module disconnects the electrical connection between the power supply module and the tripping solenoid valve when pressed. The logic tripping module disconnects the electrical connection between the power supply module and the tripping solenoid valve upon receiving a tripping signal. The reset interlocking module connects the electrical connection between the power supply module and the tripping solenoid valve upon receiving a reset signal, and maintains a power-off interlocking state when the electrical connection between the power supply module and the tripping solenoid valve is disconnected. Therefore, when the gas turbine tripping device is pressed or receives a tripping signal, it disconnects the electrical connection between the power supply module and the tripping solenoid valve and maintains a power-off lockout state. Upon receiving a reset signal, it restores the electrical connection between the power supply module and the tripping solenoid valve. This system can maintain the gas turbine tripping device in a power-off lockout state after power loss, preventing abnormal operation and thus protecting the gas turbine. Since the gas turbine tripping device of this embodiment can disconnect the electrical connection between the power supply module and the tripping solenoid valve via either a button tripping module or a logic tripping module, it is more standardized and applicable to most gas turbine tripping systems.

[0036] The following is combined Figure 2 This application describes a gas turbine tripping device provided in an embodiment.

[0037] Figure 2 This is a schematic diagram of the structure of a gas turbine tripping device according to an embodiment of this application.

[0038] like Figure 2As shown, the reset interlocking module 103 includes: a reset button BR01, an intermediate relay RM01, a holding relay RH01, and a reset relay RR01; the first end of the reset button BR01 serves as the first end of the reset interlocking module 103; the first end of the switch in the intermediate relay RM01 is connected to the first end of the reset button BR01, the first end of the coil in the intermediate relay RM01 is connected to the second end of the reset button BR01, and the second end of the coil in the intermediate relay RM01 is connected to the negative terminal of the power supply module 104; the first end of the switch in the holding relay RH01 is connected to the first end of the reset button BR01. Connect to the reset relay RR01. The first terminal of the switch in the reset relay RR01 serves as the second terminal of the reset lockout module 103. The second terminal of the switch in the reset relay RR01 is connected to the first terminal of the coil in the holding relay RH01 and serves as the third terminal of the reset lockout module 103. The first terminal of the coil in the reset relay RR01 is connected to the second terminal of the switch in the holding relay RH01 and the second terminal of the switch in the intermediate relay RM01. The second terminal of the coil in the reset relay RR01 is connected to the second terminal of the coil in the intermediate relay RM01 and the second terminal of the coil in the holding relay RH01 and then connected to the negative terminal of the power supply module 104, and serves as the fourth terminal of the reset lockout module 103.

[0039] In this embodiment, when the electrical connection between the power module 104 and the trip solenoid valve 105 is disconnected, the reset button BR01 is in the off state, the coil of the intermediate relay RM01 is always de-energized, and the switch of the intermediate relay RM01 is always in the off state; the coil of the holding relay RH01 is de-energized, and the switch of the holding relay RH01 is open; the coil of the reset relay RR01 is de-energized, ensuring that the switch of the reset relay RR01 is always in the off state, thus ensuring that the power module 104 and the trip solenoid valve 105 are always in a power-off lockout state.

[0040] After the gas turbine returns to normal, the reset interlock module 103 receives a reset signal, closes the reset button BR01, energizes the coil of the intermediate relay RM01, and closes the switch in the intermediate relay RM01; then the coil of the reset relay RR01 is energized, and the switch in the reset relay RR01 is closed; finally, the coil of the holding relay RH01 is energized, the switch in the holding relay RH01 is closed, and the electrical connection between the power supply module 104 and the trip solenoid valve 105 is connected. Since the coil of the holding relay RH01 remains in the energized state, the power supply module 104 and the trip solenoid valve 105 are always energized.

[0041] The reset button BR01 is a button with a self-reset function. After the electrical connection between the power module 104 and the trip solenoid valve 105 is restored, the reset button BR01 will automatically disconnect.

[0042] like Figure 2 As shown, the button trip module 101 includes: at least one trip button; wherein, one end of the trip buttons connected in parallel serves as the first end of the button trip module 101, and the other end of the trip buttons connected in parallel serves as the second end of the button trip module 101.

[0043] In this embodiment of the application, when the gas turbine is running normally, at least one of the trip buttons is in a closed state, that is, at least one of the trip buttons BT01 and BT02 is in a closed state; when the gas turbine malfunctions, all the trip buttons in the closed state are disconnected, that is, the trip buttons BT01 and BT02 are disconnected at the same time, and the electrical connection between the power module 104 and the trip solenoid valve 105 is disconnected.

[0044] It should be noted that the number of the aforementioned at least one trip button can be expanded according to the needs of the gas turbine trip system.

[0045] like Figure 2 As shown, the logic trip module 102 includes: at least one logic trip switch; wherein, each logic trip switch is connected in series, one end of the series connection serves as the first end of the logic trip module 102, and the other end of the series connection serves as the second end of the logic trip module 102.

[0046] In this embodiment, when the gas turbine is running normally, all logic trip switches are in the closed state, that is, logic trip switches TC01, TC02 and TC03 are all in the closed state; when the gas turbine malfunctions, at least one logic trip switch is disconnected, that is, at least one of logic trip switches TC01, TC02 and TC03 is disconnected, and the electrical connection between the power module 104 and the trip solenoid valve 105 is disconnected.

[0047] It should be noted that the number of the above-mentioned at least one logic trip switch can be expanded according to the needs of the gas turbine trip system.

[0048] like Figure 2 As shown, the gas turbine tripping device 100 further includes: a first state monitoring module 201, the first end of the first state monitoring module 201 being connected to the second end of the button tripping module 101, and the second end of the first state monitoring module 201 being connected to the negative terminal of the power supply module 104, for monitoring the state of the button tripping module 101.

[0049] like Figure 2As shown, the first state monitoring module 201 includes a first state relay RV01 and a first indicator light LT01. The first terminal of the first state relay RV01 serves as the first terminal of the first state monitoring module 201, and the second terminal of the first state relay RV01 serves as the second terminal of the first state monitoring module 201. The first terminal of the first indicator light LT01 is connected to the first terminal of the first state relay RV01, and the second terminal of the first indicator light LT01 is connected to the second terminal of the first state relay RV01.

[0050] In this embodiment, when the button trip module 101 is disconnected, the coil in the first state relay RV01 is de-energized and the first indicator light LT01 goes out; when the button trip module 101 is closed, the coil in the first state relay RV01 is energized and the first indicator light LT01 lights up.

[0051] like Figure 2 As shown, the gas turbine tripping device 100 further includes: at least one second state monitoring module 202, the first end of each second state monitoring module 202 is connected to one end of each logic tripping switch in the logic tripping module 102, and the second end of each second state monitoring module 202 is connected to the negative terminal of the power supply module 104, for monitoring the state of each logic tripping switch.

[0052] like Figure 2 As shown, each second state monitoring module 202 includes: a second state relay and a second indicator light; the second state relay has its first end serving as the first end of the second state monitoring module 202 and its second end serving as the second end of the second state monitoring module 202; the second indicator light has its first end connected to the first end of the second state relay and its second end connected to the second end of the second state relay.

[0053] In this embodiment, when the logic trip switch is open, the coil in the second state relay is de-energized and the second indicator light goes out; when the logic trip module 102 is switched on, the coil in the second state relay is energized and the second indicator light illuminates.

[0054] In this embodiment, the gas turbine tripping device includes two trip buttons and three logic trip switches. When both trip buttons are opened simultaneously, the first indicator light and the second indicator light turn off simultaneously. For example, when the logic trip switch TC01 is opened, the second indicator light LT04 turns off first, while the second indicator lights LT02 and LT03 and the first indicator light LT01 remain lit, or turn off after the second indicator light LT04. Therefore, the cause of the gas turbine tripping device power failure can be determined based on the status of the first and second indicator lights.

[0055] In some embodiments, the gas turbine includes a gas turbine fault diagnosis system. The fault diagnosis system acquires the status of a first state relay and a second state relay, and determines the cause of power failure of the gas turbine tripping device based on the status of the first state relay and the second state relay.

[0056] like Figure 2 As shown, the gas turbine tripping device 100 further includes: a third state monitoring module 203, the first end of the third state monitoring module 203 being connected to the second end of the reset interlocking module 103, and the second end of the third state monitoring module 203 being connected to the negative terminal of the power supply module 104, for monitoring the state of the switch in the reset relay RR01.

[0057] In this embodiment of the application, the third state monitoring module 203 includes: a third indicator light LT05; wherein, the first end of the third indicator light LT05 serves as the first end of the third state monitoring module 203, the second end of the third indicator light LT05 serves as the second end of the third state monitoring module 203, the first end of the third indicator light LT05 is connected to the first end of the holding relay RH01, and the second end of the third indicator light LT05 is connected to the second end of the holding relay RH01.

[0058] Specifically, when the electrical connection between the power module 104 and the trip solenoid valve 105 is disconnected, the switch in the reset relay RR01 is open, the holding relay RH01 is open, and the third indicator light LT05 is off. When the electrical connection between the power module 104 and the trip solenoid valve 105 is restored, the switch in the reset relay RR01 is closed, the holding relay RH01 is closed, and the third indicator light LT05 is illuminated. The status of the third indicator light LT05 is observed to determine whether the gas turbine tripping device has reset.

[0059] In summary, when a gas turbine malfunctions, the power supply module 104 and the trip solenoid valve 105 are disconnected via a trip button or at least one logic trip switch, thus tripping the gas turbine. The cause of the trip is determined by the extinguishing sequence of the first and second indicator lights in the first and second status monitoring modules 201 and 202. The on / off status of the first and second indicator lights is observed. If both the first and second indicator lights are lit, the reset button BR01 is closed, the third indicator light LT05 illuminates, the gas turbine tripping device completes its reset, the power supply module 104 and the trip solenoid valve 105 are disconnected, and the reset button BR01 is released.

[0060] In summary, the gas turbine tripping device of this application embodiment includes: a push-button tripping module, a logic tripping module, a reset interlocking module, and a power supply module; wherein, the first end of the push-button tripping module is connected to the first end of the reset interlocking module and the positive terminal of the power supply module respectively, the second end of the push-button tripping module is connected to the first end of the logic tripping module, the second end of the logic tripping module is connected to the second end of the reset interlocking module, the third end of the reset interlocking module serves as the positive terminal connected to the wiring terminal of the tripping solenoid valve, and the fourth end of the reset interlocking module is connected to the negative terminal of the power supply module and serves as the negative terminal connected to the wiring terminal of the tripping solenoid valve; wherein, the push-button tripping module is used to disconnect the electrical connection between the power supply module and the tripping solenoid valve when pressed; the logic tripping module is used to disconnect the electrical connection between the power supply module and the tripping solenoid valve when a tripping signal is received; the reset interlocking module is used to connect the electrical connection between the power supply module and the tripping solenoid valve when a reset signal is received, and to maintain a power-off interlocking state when the electrical connection between the power supply module and the tripping solenoid valve is disconnected. Therefore, when the gas turbine trip device is pressed or receives a trip signal, it disconnects the electrical connection between the power supply module and the trip solenoid valve and maintains a power-off lockout state. Upon receiving a reset signal, it restores the electrical connection between the power supply module and the trip solenoid valve. This system can maintain the gas turbine trip device in a power-off lockout state after power loss, preventing abnormal operation and thus protecting the gas turbine.

[0061] Based on the above embodiments, this application also proposes a gas turbine tripping system.

[0062] Figure 3 This is a schematic diagram of the structure of a gas turbine tripping system according to an embodiment of this application.

[0063] like Figure 3 As shown, the gas turbine tripping system 300 includes: at least one gas turbine tripping device 100 as proposed in the first aspect embodiment of this application and a tripping solenoid valve group 301; wherein, the tripping solenoid valve group 301 includes a plurality of tripping solenoid valves 105, each tripping solenoid valve 105 is connected to the gas turbine tripping device 100, and each gas turbine tripping device 100 is used to connect or disconnect the electrical connection between the power module 104 and the tripping solenoid valve 105.

[0064] In this embodiment, the gas turbine tripping system includes three gas turbine tripping devices 100 and three tripping solenoid valves 105. The three gas turbine tripping devices 100 and the three tripping solenoid valves 105 are connected in a one-to-one correspondence. The three tripping solenoid valves 105 use a two-out-of-three logic. During the operation of the gas turbine, if two of the three tripping solenoid valves 105 are de-energized, the tripping solenoid valve group will be de-energized, the fuel valve will close, and the gas turbine will trip.

[0065] The three-out-of-two logic prevents one of the gas turbine tripping devices from malfunctioning and causing the electrical connection between the power module 104 and the trip solenoid valve 105 to be disconnected, thus affecting the operation of the gas turbine. At the same time, when the electrical connection between two of the trip solenoid valves 105 and the power module 104 is disconnected, the gas turbine trips, thus protecting the gas turbine.

[0066] It should be noted that in other embodiments of this application, other logic can also be used to implement gas turbine tripping, which will not be elaborated here.

[0067] The gas turbine tripping system of this application includes at least one gas turbine tripping device and a tripping solenoid valve group as described in the first aspect of this application; wherein the tripping solenoid valve group includes multiple tripping solenoid valves, each tripping solenoid valve is connected to the gas turbine tripping device, and each gas turbine tripping device is used to connect or disconnect the electrical connection between the power module and the tripping solenoid valve. Therefore, the system can maintain the gas turbine tripping device in a power-off locked state after power failure, preventing abnormal operation and avoiding accidental triggering of the tripping solenoid valve to damage the gas turbine, thereby achieving protection of the gas turbine.

[0068] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0070] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0071] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0073] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A gas turbine tripping device, characterised in that, The button tripping module, the logic tripping module, the reset lockout module and the power module are connected as follows: the first end of the button tripping module is connected with the first end of the reset lockout module and the positive end of the power module respectively, the second end of the button tripping module is connected with the first end of the logic tripping module, the second end of the logic tripping module is connected with the second end of the reset lockout module, the third end of the reset lockout module is connected with the positive end of the tripping electromagnetic valve, the fourth end of the reset lockout module is connected with the negative end of the power module and the negative end of the tripping electromagnetic valve, The button tripping module is configured to disconnect the electrical connection between the power module and the tripping electromagnetic valve when the button tripping module is pressed; The logic tripping module is configured to disconnect the electrical connection between the power module and the tripping electromagnetic valve when the logic tripping module receives a tripping signal; The reset lockout module is configured to connect the electrical connection between the power module and the tripping electromagnetic valve when the reset lockout module receives a reset signal, and keep the electrical connection between the power module and the tripping electromagnetic valve in a power-off lockout state when the electrical connection between the power module and the tripping electromagnetic valve is disconnected; The reset lockout module comprises: A reset button, the first end of the reset button being the first end of the reset lockout module; An intermediate relay, the first end of the switch in the intermediate relay being connected with the first end of the reset button, the first end of the coil in the intermediate relay being connected with the second end of the reset button, and the second end of the coil in the intermediate relay being connected with the negative end of the power module; A holding relay, the first end of the switch in the holding relay being connected with the first end of the reset button; A reset relay, the first end of the switch in the reset relay being the second end of the reset lockout module, the second end of the switch in the reset relay being connected with the first end of the coil in the holding relay and then being the third end of the reset lockout module, the first end of the coil in the reset relay being connected with the second end of the switch in the holding relay and the second end of the switch in the intermediate relay respectively, the second end of the coil in the reset relay being connected with the second end of the coil in the intermediate relay and the second end of the coil in the holding relay respectively and then being connected with the negative end of the power module and being the fourth end of the reset lockout module; When the electrical connection between the power module and the tripping electromagnetic valve is disconnected, the reset button is in a disconnected state, the coil in the intermediate relay is in a power-off state, the switch in the intermediate relay is in a disconnected state, the coil in the holding relay is in a power-off state, the switch in the holding relay is disconnected, the coil in the reset relay is in a power-off state, the switch in the reset relay is in a disconnected state, and the power module and the tripping electromagnetic valve are in a power-off lockout state. ​ After the gas turbine is restored to normal, the reset locking module receives a reset signal, the reset button is closed, the coil of the intermediate relay is energized, the switch of the intermediate relay is closed, the coil of the reset relay is energized, the switch of the reset relay is closed, the coil of the holding relay is energized, the switch of the holding relay is closed, the electrical connection between the power supply module and the trip electromagnetic valve is turned on, and the electrical connection between the power supply module and the trip electromagnetic valve is in an electrified state.

2. The apparatus of claim 1, wherein, The button trip module comprises at least one trip button; wherein One end of each of the trip buttons connected in parallel serves as a first end of the button trip module, and the other end of each of the trip buttons connected in parallel serves as a second end of the button trip module.

3. The apparatus of claim 1, wherein, The logic trip module comprises at least one logic trip switch; wherein Each of the logic trip switches is connected in series, one end of the series connection serves as a first end of the logic trip module, and the other end of the series connection serves as a second end of the logic trip module.

4. The apparatus of claim 1, wherein, Further comprising: A first state monitoring module, a first end of the first state monitoring module is connected to a second end of the button trip module, a second end of the first state monitoring module is connected to a negative end of the power supply module, and the first state monitoring module is used to monitor a state of the button trip module.

5. The apparatus of claim 4, wherein, The first state monitoring module comprises: A first state relay, a first end of the first state relay serves as the first end of the first state monitoring module, and a second end of the first state relay serves as the second end of the first state monitoring module; A first indicator lamp, a first end of the first indicator lamp is connected to the first end of the first state relay, and a second end of the first indicator lamp is connected to the second end of the first state relay.

6. The apparatus of claim 1, wherein, Further comprising: At least one second state monitoring module, a first end of each of the second state monitoring modules is connected to one end of each of the logic trip switches in the logic trip module, a second end of each of the second state monitoring modules is connected to the negative end of the power supply module, and each of the second state monitoring modules is used to monitor a state of each of the logic trip switches.

7. The apparatus of claim 6, wherein, Each of the second state monitoring modules comprises: A second state relay, a first end of the second state relay serves as the first end of the second state monitoring module, and a second end of the second state relay serves as the second end of the second state monitoring module; A second indicator lamp, a first end of the second indicator lamp is connected to the first end of the second state relay, and a second end of the second indicator lamp is connected to the second end of the second state relay.

8. The apparatus of claim 1, wherein, Further comprising: A third state monitoring module, a first end of the third state monitoring module is connected to a second end of the reset locking module, a second end of the third state monitoring module is connected to the negative end of the power supply module, and the third state monitoring module is used to monitor a state of the switch of the reset relay.

9. A gas turbine trip system characterized by, Comprise: At least one gas turbine trip device and trip electromagnetic valve group according to claim 1; wherein the trip electromagnetic valve group comprises a plurality of trip electromagnetic valves, each of the trip electromagnetic valves is connected to the gas turbine trip device, and each of the gas turbine trip devices is used to turn on or turn off the electrical connection between the power supply module and the trip electromagnetic valve.

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