A genset linked shutdown device

Abstract

The utility model discloses a kind of generator set linkage shutdown device, and generator set includes engine and generator, and the generator is equipped with electric energy output circuit, and generator set linkage shutdown device includes: power supply component;Emergency stop switch, air cut-off valve, air cut-off relay and relay, the emergency stop switch is linkage switch, and the emergency stop switch includes first normally closed contact group, second normally closed contact group;The air cut-off valve is arranged on the air inlet pipeline of the engine to be driven to open or close the air inlet pipeline of air inlet, and the air cut-off valve is connected with the power supply component to form air cut-off valve power supply circuit;The normally closed contact group of the air cut-off relay is connected in series in the air cut-off valve power supply circuit.The utility model can realize the shutdown of engine and generator simultaneously under emergency, and improve the overall safety and reliability.

Description

Technical Field

[0001] This utility model relates to a generator set linkage shutdown device, belonging to the field of generator set technology. Background Technology

[0002] Currently, diesel generator sets are widely used as important backup power equipment in critical locations such as hospitals, data centers, and industrial facilities. During operation, serious mechanical failures, electrical short circuits, overheating, and overspeeding may occur, requiring emergency shutdown to avoid equipment damage or personal injury.

[0003] After searching the existing technology, it was found that Chinese patent CN218581704U discloses an engine that can be stopped in an emergency and an emergency alarm system. The patent realizes the engine to stop working, but in the generator set, not only is it necessary to stop the engine, but also to stop the generator output. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a generator set linkage shutdown device that can simultaneously shut down the engine and generator in an emergency, thereby improving the overall safety and reliability.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a generator set linkage shutdown device, wherein the generator set includes an engine and a generator, the generator is provided with an electrical energy output circuit, and the generator set linkage shutdown device includes:

[0006] Power supply components;

[0007] An emergency stop switch, which is a linkage switch, includes a first normally closed contact group and a second normally closed contact group, wherein one of the normally closed contacts of the first normally closed contact group is connected to the power supply component.

[0008] An air cut-off valve is provided on the intake manifold of the engine to be driven to open or close the intake manifold, and the air cut-off valve is connected to the power supply assembly to form an air cut-off valve power supply circuit.

[0009] A gas shut-off relay, wherein the gas shut-off relay is provided with a coil and a normally closed contact group, the normally closed contact group being connected in series in the power supply circuit of the gas shut-off valve, and the coil, the second normally closed contact group, and the power supply component being connected in series to form a circuit;

[0010] A relay, wherein the normally closed contact group of the relay is connected to the power output circuit of the generator, one end of the coil of the relay is connected to another normally closed contact of the first normally closed contact group, and the other end of the coil of the relay is connected back to the power supply component.

[0011] When the emergency stop switch is activated, the first normally closed contact group opens, the coil of the relay is de-energized, and the normally closed contact group of the relay opens. At the same time, the second normally closed contact group opens, the coil of the gas cut-off relay is de-energized, and the normally closed contact group of the gas cut-off relay opens, and the gas cut-off valve closes.

[0012] Furthermore, the emergency stop switch is also provided with a first normally open contact group, one of the contacts of the first normally open contact group being connected to the power supply component;

[0013] It also includes an indicator light group and a buzzer, one end of which is connected to another contact of the first normally open contact group of the emergency stop switch, and the other end of which is connected to the power supply component.

[0014] When the emergency stop switch is activated, the first normally open contact group closes, the indicator light group, the buzzer, the first normally open contact group, and the power supply component form a circuit, and the indicator light group and the buzzer are turned on.

[0015] Furthermore, the power supply component includes:

[0016] A rectifier, wherein the rectifier is provided with an AC input terminal and a DC output terminal, and the AC input terminal of the rectifier is connected to the output circuit of the generator;

[0017] A DC-DC converter, wherein the DC-DC converter has a conversion input terminal and a conversion output terminal, and the conversion input terminal of the DC-DC converter is connected to the DC output terminal of the rectifier;

[0018] An energy storage device, wherein the energy storage device is connected to the conversion output terminal of the DC-DC converter;

[0019] Wherein, the AC input terminal of the rectifier is the power input terminal of the power supply component, and the conversion output terminal of the DC converter is the power output terminal of the power supply component.

[0020] Furthermore, the generator set shutdown device also includes a fuse, which is connected in series in the generator's power output circuit.

[0021] Furthermore, the emergency stop switch of the generator set linkage shutdown device is also equipped with a third normally closed contact group, one of the contacts of the third normally closed contact group being connected to the power supply component.

[0022] It also includes a fuel valve and a fuel valve relay, wherein the fuel valve is disposed on the fuel line of the engine to be driven to open or close the fuel line feed, and the fuel valve is connected to the power supply assembly to form a fuel valve power supply circuit;

[0023] The normally closed contact group of the fuel valve relay is connected in series in the fuel valve power supply circuit. One end of the coil of the fuel valve relay is connected to another contact of the third normally closed contact group, and the other end of the coil of the fuel valve relay is connected to the power supply component.

[0024] When the emergency stop switch is activated, the third normally closed contact group is opened, the coil of the fuel valve relay is de-energized, which in turn causes the normally closed contact group of the fuel valve relay to open, and the fuel valve is closed.

[0025] Furthermore, the engine is a diesel engine.

[0026] By adopting the above technical solution, this utility model has the following beneficial effects:

[0027] During operation, the first normally closed contact group of the emergency stop switch, the coil of the relay, and the power supply components are connected in series to form a circuit. When the relay coil is energized, the normally closed contact group of the relay remains closed, thereby keeping the generator output circuit open.

[0028] The second normally closed contact group of the emergency stop switch, the coil of the gas cut-off relay, and the power supply assembly are connected in series to form a circuit. When the coil of the gas cut-off relay is energized, the normally closed contact group of the gas cut-off relay remains closed, the gas cut-off valve is energized and opens, and the engine can intake air normally.

[0029] In case of an emergency requiring shutdown, the operator presses the emergency stop switch. After the emergency stop switch activates:

[0030] When the first normally closed contact group opens, the relay coil is de-energized, causing the normally closed contact group of the relay to open, thereby cutting off the generator's output circuit.

[0031] The second normally closed contact group opens, de-energizing the coil of the gas shut-off relay. This causes the normally closed contact group of the gas shut-off relay to open, de-energizing and closing the gas shut-off valve, cutting off the engine's air intake passage and achieving synchronous shutdown of the engine and generator. This coordinated control method ensures that the entire generator set can quickly and reliably stop operating in an emergency, effectively protecting equipment and personnel safety.

[0032] In addition, the indicator lights and buzzer allow for immediate display and alert when the emergency stop switch is activated; the fuse provides additional safety protection in case of circuit overload.

[0033] In summary, this utility model achieves synchronous and reliable shutdown of the engine and generator by linking the emergency stop switch with the gas shut-off valve and relay, thereby improving the safety and controllability of the generator set in emergency situations. It has significant advantages such as simple structure, reliable operation, and comprehensive protection. Attached Figure Description

[0034] Figure 1 This is a partial circuit diagram of the generator set linkage shutdown device of this utility model. Detailed Implementation

[0035] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0036] like Figure 1 As shown, a generator set linkage shutdown device is provided. The generator set includes an engine and a generator 22. The generator 22 is equipped with an electrical energy output circuit. The generator set linkage shutdown device includes:

[0037] Power supply components;

[0038] Emergency stop switch 3 is a linkage switch. Emergency stop switch 3 includes a first normally closed contact group and a second normally closed contact group. One of the normally closed contacts in the first normally closed contact group is connected to the power supply component.

[0039] Air cut-off valve 4 is installed on the intake pipe of the engine to be driven to open or close the intake of the intake pipe. Air cut-off valve 4 is connected to the power supply assembly to form an air cut-off valve power supply circuit.

[0040] The normally closed contact group of the gas shut-off relay is connected in series in the power supply circuit of the gas shut-off valve. The coil, the second normally closed contact group, and the power supply components of the gas shut-off relay are connected in series to form a circuit.

[0041] Relay 5, the normally closed contact group of relay 5 is connected to the power output circuit of generator 22, one end of the coil of relay 5 is connected to another normally closed contact of the first normally closed contact group, and the other end of the coil of relay 5 is connected back to the power supply component.

[0042] When the emergency stop switch 3 is activated, the first normally closed contact group is opened, the coil of relay 5 is de-energized, and the normally closed contact group of relay 5 is opened. At the same time, the second normally closed contact group is opened, the coil of the gas cut-off relay is de-energized, and the normally closed contact group of the gas cut-off relay is opened, and the gas cut-off valve 4 is closed.

[0043] In this embodiment, as Figure 1 As shown, during operation, the first normally closed contact group of the emergency stop switch 3, the coil of the relay 5, and the power supply components are connected in series to form a circuit. The coil of the relay 5 is energized, which keeps the normally closed contact group of the relay 5 closed, thereby keeping the output circuit of the generator 22 conducting.

[0044] The second normally closed contact group of the emergency stop switch 3, the coil of the gas cut-off relay, and the power supply assembly are connected in series to form a circuit. When the coil of the gas cut-off relay is energized, the normally closed contact group of the gas cut-off relay is kept closed, the gas cut-off valve 4 is energized and opened, and the engine can intake air normally.

[0045] In case of an emergency requiring shutdown, the operator presses emergency stop switch 3. After emergency stop switch 3 is activated:

[0046] When the first normally closed contact group is opened, the coil of relay 5 is de-energized, causing the normally closed contact group of relay 5 to open, thereby cutting off the output circuit of generator 22.

[0047] The second normally closed contact group opens, the coil of the gas cut-off relay is de-energized, causing the normally closed contact group of the gas cut-off relay to open, the gas cut-off valve 4 is de-energized and closes, cutting off the engine intake passage.

[0048] Figure 1 K1 is relay 5, and K2 is gas shut-off relay.

[0049] Specifically, such as Figure 1 As shown, the emergency stop switch 3 is also provided with a first normally open contact group, one of the contacts of the first normally open contact group is connected to the power supply component;

[0050] The generator set linkage shutdown device also includes an indicator light group and a buzzer. One end of the indicator light group and the buzzer are respectively connected to the other contact of the first normally open contact group of the emergency stop switch 3, and the other end of the indicator light group and the buzzer are respectively connected to the power supply component.

[0051] When the emergency stop switch 3 is activated, the first normally open contact group closes, and the indicator light group, buzzer, first normally open contact group and power supply component form a circuit, and the indicator light group and buzzer are activated.

[0052] In this embodiment, as Figure 1 As shown, the indicator light group includes a fault indicator light, which is a red LED indicator. Both the fault indicator light and the buzzer are equipped with a protective resistor connected in series. When generator set 2 is running normally, the first normally open contact group of emergency stop switch 3 is open; the fault indicator light and buzzer do not work because the first normally open contact group is open. When emergency stop switch 3 is pressed, the first normally open contact group closes, the fault indicator light illuminates, and the buzzer simultaneously sounds an alarm, indicating to the operator that the generator set has entered an emergency stop state.

[0053] Specifically, such as Figure 1 As shown, the power supply component includes:

[0054] The rectifier has an AC input terminal and a DC output terminal. The AC input terminal of the rectifier is connected to the output circuit of the generator 22.

[0055] A DC-DC converter has a conversion input terminal and a conversion output terminal. The conversion input terminal of the DC-DC converter is connected to the DC output terminal of the rectifier.

[0056] An energy storage device is connected to the output terminal of a DC-DC converter.

[0057] In this embodiment, as Figure 1 As shown, the rectifier is an AC-DC rectifier. The DC-DC converter is a step-down DC-DC converter. The rectifier converts three-phase power into high-voltage DC power, and the DC-DC converter converts the high-voltage DC power output from the rectifier into 24V DC power. The energy storage device is a battery pack, which is connected to the conversion output terminal of the DC-DC converter. When the generator 22 is working normally, the rectifier converts the AC power output from the generator 22 into DC power. The DC-DC converter steps down this DC power to supply power to the emergency stop switch 3 on one hand and to charge the battery pack on the other. When the generator 22 stops working or the output is abnormal, the battery pack continues to supply power through its output terminal. In this embodiment, the battery pack is equipped with a charging circuit. When the generator 22 is working normally, the DC-DC converter uses the charging circuit to charge the battery pack and maintain the battery pack's charge to prevent overcharge.

[0058] In some embodiments, the energy storage device may also be a lithium battery pack, a nickel-metal hydride battery pack, or a supercapacitor pack.

[0059] Specifically, such as Figure 1 As shown, the generator set linkage shutdown device also includes a fuse 7, which is connected in series in the power output circuit of the generator 22.

[0060] Specifically, such as Figure 1 As shown, the emergency stop switch 3 is also provided with a third normally closed contact group, one of the contacts of the third normally closed contact group is connected to the power supply component;

[0061] It also includes a fuel valve and a fuel valve relay. The fuel valve is installed on the engine's fuel line to be driven to open or close the fuel line feed. The fuel valve is connected to the power supply assembly to form a fuel valve power supply circuit.

[0062] The normally closed contact group of the fuel valve relay is connected in series in the fuel valve power supply circuit. One end of the coil of the fuel valve relay is connected to another contact of the third normally closed contact group, and the other end of the coil of the fuel valve relay is connected to the power supply component.

[0063] When the emergency stop switch 3 is activated, the third normally closed contact group is opened, the coil of the fuel valve relay is de-energized, which in turn causes the normally closed contact group of the fuel valve relay to open, and the fuel valve is closed.

[0064] In this embodiment, as Figure 1 As shown, the third normally closed contact group of the emergency stop switch 3, the coil of the fuel valve relay, and the power supply assembly form a circuit. When the coil of the fuel valve relay is energized, the normally closed contact group of the fuel valve relay remains closed, the fuel valve is energized and opens, and the engine supplies fuel normally.

[0065] When the emergency stop switch 3 is activated, the third normally closed contact group opens, the coil of the fuel valve relay is de-energized, causing the normally closed contact group of the fuel valve relay to open, the fuel valve is de-energized and closes, and the engine fuel supply is cut off.

[0066] In addition, the shut-off valve 4 may also include an emergency manual stop handle, which can be manually operated to close the valve in the event of an electrical failure.

[0067] Specifically, such as Figure 1 As shown, the generator set linkage shutdown device also includes a grounding wire, which is connected to the engine and generator 22 respectively.

[0068] Specifically, such as Figure 1 As shown, the engine is a diesel engine.

[0069] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A generator set linkage shutdown device, the generator set including an engine and a generator (22), the generator (22) being provided with an electrical energy output circuit, characterized in that, The generator set linkage shutdown device includes: Power supply components; Emergency stop switch (3), the emergency stop switch (3) is a linkage switch, the emergency stop switch (3) includes a first normally closed contact group and a second normally closed contact group, one of the normally closed contacts of the first normally closed contact group is connected to the power supply component; The gas shut-off valve (4) is provided on the intake pipe of the engine to be driven to open or close the intake of the intake pipe. The gas shut-off valve (4) is connected to the power supply assembly to form a gas shut-off valve power supply circuit. A gas shut-off relay, wherein the normally closed contact group of the gas shut-off relay is connected in series in the power supply circuit of the gas shut-off valve, and the coil of the gas shut-off relay, the second normally closed contact group and the power supply component are connected in series to form a circuit; The normally closed contact group of the relay (5) is connected to the power output circuit of the generator (22), one end of the coil of the relay (5) is connected to another normally closed contact of the first normally closed contact group, and the other end of the coil of the relay (5) is connected back to the power supply component. When the emergency stop switch (3) is activated, the first normally closed contact group is disconnected, the coil of the relay (5) is de-energized, and the normally closed contact group of the relay (5) is disconnected. At the same time, the second normally closed contact group is disconnected, the coil of the gas cut-off relay is de-energized, and the normally closed contact group of the gas cut-off relay is disconnected, and the gas cut-off valve (4) is closed.

2. The generator set linkage shutdown device according to claim 1, characterized in that, The emergency stop switch (3) is also provided with a first normally open contact group, one of the contacts of the first normally open contact group being connected to the power supply component; It also includes an indicator light group and a buzzer, one end of which is connected to the other contact of the first normally open contact group of the emergency stop switch (3), and the other end of which is connected to the power supply component. When the emergency stop switch (3) is activated, the first normally open contact group is closed, the indicator light group, the buzzer, the first normally open contact group and the power supply component form a circuit, and the indicator light group and the buzzer are activated.

3. The generator set linkage shutdown device according to claim 1, characterized in that, The power supply component includes: A rectifier, wherein the rectifier is provided with an AC input terminal and a DC output terminal, and the AC input terminal of the rectifier is connected to the output circuit of the generator (22); A DC-DC converter, wherein the DC-DC converter has a conversion input terminal and a conversion output terminal, and the conversion input terminal of the DC-DC converter is connected to the DC output terminal of the rectifier; An energy storage device is connected to the conversion output terminal of the DC-DC converter.

4. The generator set linkage shutdown device according to claim 1, characterized in that, It also includes a fuse (7), which is connected in series in the power output circuit of the generator (22).

5. The generator set linkage shutdown device according to claim 1, characterized in that, The emergency stop switch (3) is also provided with a third normally closed contact group, one of the contacts of the third normally closed contact group being connected to the power supply component; It also includes a fuel valve and a fuel valve relay, wherein the fuel valve is disposed on the fuel line of the engine to be driven to open or close the fuel line feed, and the fuel valve is connected to the power supply assembly to form a fuel valve power supply circuit; The normally closed contact group of the fuel valve relay is connected in series in the fuel valve power supply circuit. One end of the coil of the fuel valve relay is connected to another contact of the third normally closed contact group, and the other end of the coil of the fuel valve relay is connected to the power supply component. When the emergency stop switch (3) is activated, the third normally closed contact group is disconnected, the coil of the fuel valve relay is de-energized, thereby causing the normally closed contact group of the fuel valve relay to disconnect, and the fuel valve is closed.

6. The generator set linkage shutdown device according to claim 1, characterized in that, The engine is a diesel engine.

Images