A practical diesel engine control cabinet

Abstract

This utility model discloses a practical diesel generator set control cabinet, relating to diesel generator set control technology. It solves the technical problems of existing control cabinets used with VC series high-power generator sets, which suffer from disordered and scattered wiring, susceptibility to failure, high maintenance difficulty, and inconvenience for centralized control. It includes a cabinet housing a louver control module, a grounding resistor cabinet, and an integrated auxiliary equipment power supply terminal. The louver control module is electrically connected to the louver motor in the engine room and has a signal feedback terminal electrically connected to the controller. The grounding resistor cabinet is electrically connected to each grounding terminal in the cabinet via wires, and control relays are installed on the wires. The closing / opening knob is controlled by the controller in conjunction with the control relays. This utility model adds functions such as intake and exhaust louver control, grounding resistor cabinet control, and integrated auxiliary equipment power supply control, meeting the control requirements of container units and indoor units.

Description

Technical Field

[0001] This utility model relates to diesel engine control technology, and more specifically, to a practical diesel engine control cabinet. Background Technology

[0002] When using VC series high-power generator sets, a practical, versatile, and fully functional control cabinet is required. For example... Figure 1 As shown, the existing control cabinet used with VC series high-power generator sets can basically realize the functions of unit start-up, shutdown, closing, opening, parameter monitoring, and protection. Although this type of unit control cabinet can meet the application requirements of most occasions, when used for certain purposes and requiring multiple functions for control and feedback, especially when used with high-voltage generator sets, the control cabinet needs to connect multiple external auxiliary devices through multiple communication lines. This easily leads to complicated and scattered control wiring between external auxiliary devices and the control cabinet. This wiring method is prone to failure, difficult to maintain, and not conducive to centralized control. Utility Model Content

[0003] The technical problem this utility model aims to solve is to address the shortcomings of existing technologies by providing a practical diesel generator set control cabinet. This cabinet addresses the issues of messy and scattered wiring, susceptibility to malfunctions, high maintenance difficulty, and lack of centralized control inherent in existing control cabinets used with VC series high-power generator sets.

[0004] This utility model discloses a practical diesel generator control cabinet, comprising a cabinet body, a controller, and a display panel. The display panel has a display screen electrically connected to the controller, a local / remote start knob, and a closing / opening knob. The cabinet body also includes a louver control module, a grounding resistor cabinet, and an integrated auxiliary equipment power supply terminal. The louver control module is electrically connected to a louver motor in the engine room and has a signal feedback terminal electrically connected to the controller. The grounding resistor cabinet is electrically connected to each grounding terminal in the cabinet via wires, and control relays are installed on the wires. The closing / opening knob is controlled by the controller in conjunction with the control relays. The integrated auxiliary equipment power supply terminal is located in the cabinet and is electrically connected to the integrated generator set and the louver control module.

[0005] As a further improvement, the integrated unit includes an AC pre-supply pump, a first heater, a second heater, a battery heater, and a motor heater. Circuit breakers are installed on the wires connecting the power input terminals of the AC pre-supply pump, the first heater, the second heater, the battery heater, and the motor heater to the power input terminal of the integrated power auxiliary equipment.

[0006] Furthermore, the louver control module includes a power adapter, a three-position switch, a louver motor, and an eleventh intermediate relay;

[0007] The coil of the eleventh intermediate relay is electrically connected to the controller;

[0008] The input terminal of the power adapter is electrically connected to the power supply terminal of the integrated power auxiliary device. The first output terminal of the power adapter is electrically connected to the coil of the nth intermediate relay. The coil of the nth intermediate relay is simultaneously electrically connected to the first selection terminal of the three-position switch and the normally open switch of the eleventh intermediate relay. The other end of the normally open switch of the eleventh intermediate relay is electrically connected to the third selection terminal of the three-position switch. The common terminal of the three-position switch is electrically connected to the second output terminal of the power adapter.

[0009] The normally closed terminal of the first double-position switch of the nth intermediate relay and the normally open terminal of the second double-position switch of the nth intermediate relay are both electrically connected to the first output terminal of the power adapter, and the normally open terminal of the first double-position switch of the nth intermediate relay and the normally closed terminal of the second double-position switch of the nth intermediate relay are both electrically connected to the second output terminal of the power adapter.

[0010] The common terminal of the first double-position switch of the nth intermediate relay and the common terminal of the second double-position switch of the nth intermediate relay are both electrically connected to the motor of the nth louver.

[0011] Furthermore, the second output terminal of the power adapter is electrically connected to the first signal feedback terminal of the controller through the first normally open switch of the nth intermediate relay, and the second output terminal of the power adapter is electrically connected to the second signal feedback terminal of the controller through the fourth normally open switch of the nth intermediate relay.

[0012] Furthermore, when n is greater than one, the coils of the n intermediate relays are connected in parallel;

[0013] Furthermore, the first output terminal of the power adapter is electrically connected to the positive terminal of the battery, and the second output terminal of the power adapter is electrically connected to the negative terminal of the battery.

[0014] Furthermore, a third circuit breaker is provided between the wires connecting the first and second output terminals of the power adapter to the battery.

[0015] Furthermore, a first fuse is provided between the coil of the nth intermediate relay and the wire connecting the power adapter.

[0016] Furthermore, the controller is electrically connected to the coil of the control relay, the normally open terminal of the control relay is electrically connected to the grounding terminal of the cabinet, and the common terminal of the control relay is electrically connected to the corresponding connection terminal of the grounding resistor cabinet.

[0017] Beneficial effects

[0018] The advantages of this utility model are:

[0019] This utility model, based on the original control cabinet, further includes a louver control module, a grounding resistor cabinet, and an integrated auxiliary equipment power supply terminal within the cabinet. The louver control module is electrically connected to the louver motor in the machine room and has a signal feedback terminal electrically connected to the controller. The grounding resistor cabinet is electrically connected to each grounding terminal in the cabinet via wires, and control relays are installed on the wires. The closing / opening knob is controlled by the controller in conjunction with the control relays. The integrated auxiliary equipment power supply terminal is located in the cabinet and is electrically connected to the integrated unit and the louver control module, thus consolidating the auxiliary equipment power control functions. This reduces the problems of messy and scattered wiring between the control cabinet and the integrated unit, which are prone to failure, difficult to maintain, and unfavorable for centralized control, and facilitates inspection and tidying of the wiring. Attached Figure Description

[0020] Figure 1 This is a front view of the existing cabinet structure;

[0021] Figure 2 This is a wiring diagram of the control cabinet of this utility model;

[0022] Figure 3 This is a wiring diagram of the grounding resistor cabinet and cabinet body of this utility model;

[0023] Figure 4 This is a front view of the cabinet structure of this utility model.

[0024] Among them: 1-cabinet, 2-display screen, 3-display panel, 4-control relay, 5-grounding resistor cabinet, SB1-start / stop control knob, SA2-closing / opening control knob, SA1-local / remote control knob, SA3-louver manual / automatic knob, HL1-power indicator light, HL2-closing indicator light, HA-fault indicator light, SB1-existing start button, SB2-existing stop button, U1-controller, U2-AC pre-supply pump, U3-first heater, U4-second heater, U5-battery heater, U6-motor heater, U7-power adapter, U8-battery, U9-integrated auxiliary equipment power supply terminal, QF3-third circuit breaker, QF6-sixth circuit breaker, QF7-seventh circuit breaker, QF8-eighth circuit breaker, QF9-ninth circuit breaker, Q F10 - Tenth Circuit Breaker, QF11 - Eleventh Circuit Breaker, SA3 - Three-position Switch, M1 - Inlet Louver Motor, M2 - Exhaust Louver Motor, SF1 - First Fuse, J1 - First Intermediate Relay, J2 - Second Intermediate Relay, J1-1 - First Double-pole Switch of First Intermediate Relay, J1-2 - Second Double-pole Switch of First Intermediate Relay, J2-1 - First Double-pole Switch of Second Intermediate Relay, J2-2 - Second Double-pole Switch of Second Intermediate Relay, J1-3 - First Normally Open Switch of First Intermediate Relay, J1-4 - Second Normally Open Switch of First Intermediate Relay, J2-3 - First Normally Open Switch of Second Intermediate Relay, J2-4 - Second Normally Open Switch of Second Intermediate Relay, K11 - Eleventh Intermediate Relay, K1 - First Normally Closed Switch, SEB - Emergency Stop Switch. Detailed Implementation

[0025] The present invention will be further described below with reference to embodiments, but this does not constitute any limitation on the present invention. Any limited modifications made by any person within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0026] See Figures 2-4 This utility model discloses a practical diesel generator control cabinet, comprising a cabinet body 1, a controller U1 and a display panel 3, the display panel 3 having a display screen 2 electrically connected to the controller U1, a local / remote start knob SA1 and a closing / opening knob SA2, the cabinet body 1 also having a louver control module, a grounding resistor cabinet 5 and an integrated auxiliary equipment power supply terminal, the louver control module being electrically connected to the louver motor Mn in the engine room, and the louver control module having a signal feedback terminal electrically connected to the controller U1; the grounding resistor cabinet 5 being electrically connected to each grounding terminal in the cabinet body 1 via wires, the wires having control relays 4, the closing / opening knob SA2 being controlled by the controller U1 in conjunction with the control relays 4, the integrated auxiliary equipment power supply terminal U9 being located in the cabinet body 1 and electrically connected to the integrated generator and the louver control module.

[0027] The integrated unit includes an AC pre-supply pump U2, a first heater U3, a second heater U4, a battery heater U5, and a motor heater U6. Circuit breakers are installed on the wires connecting the power input terminals of the AC pre-supply pump U2, the first heater U3, the second heater U4, the battery heater U5, and the motor heater U6 to the power input terminal U9 of the integrated power auxiliary equipment.

[0028] A sixth circuit breaker QF6 is installed on the wire connecting the power input terminal of the AC pre-supply pump U2 and the power terminal of the integrated power auxiliary equipment U9; an eighth circuit breaker QF8 is installed on the wire connecting the power input terminal of the first heater U3 and the power terminal of the integrated power auxiliary equipment U9; a ninth circuit breaker QF9 is installed on the wire connecting the power input terminal of the second heater U4 and the power terminal of the integrated power auxiliary equipment U9; a tenth circuit breaker QF10 is installed on the wire connecting the power input terminal of the battery heater U5 and the power terminal of the integrated power auxiliary equipment U9; a seventh circuit breaker QF7 and a normally closed switch K1 of the 100th intermediate relay are installed on the wire connecting the power input terminal of the motor heater U6 and the power terminal of the integrated power auxiliary equipment U9, and the coil of the 100th intermediate relay is electrically connected to the controller U1.

[0029] The louver control module includes a power adapter U7, a three-position switch SA3, a louver motor Mn, and an eleventh intermediate relay. The coil of the eleventh intermediate relay is electrically connected to the controller U1.

[0030] The input terminal of the power adapter U7 is electrically connected to the power terminal U9 of the integrated power auxiliary device. The first output terminal of the power adapter U7 is electrically connected to the coil of the nth intermediate relay Jn. The coil of the nth intermediate relay Jn is simultaneously electrically connected to the first selection terminal of the three-position switch SA3 and the normally open switch K11 of the eleventh intermediate relay. The other end of the normally open switch K11 of the eleventh intermediate relay is electrically connected to the third selection terminal of the three-position switch SA3. The common terminal of the three-position switch SA3 is electrically connected to the second output terminal of the power adapter U7.

[0031] The normally closed terminal of the first double-position switch Jn-1 of the nth intermediate relay and the normally open terminal of the second double-position switch Jn-2 of the nth intermediate relay are both electrically connected to the first output terminal of the power adapter U7, and the normally open terminal of the first double-position switch Jn-1 of the nth intermediate relay and the normally closed terminal of the second double-position switch Jn-2 of the nth intermediate relay are both electrically connected to the second output terminal of the power adapter U7.

[0032] The common terminal of the first double-position switch Jn-1 of the nth intermediate relay and the common terminal of the second double-position switch Jn-2 of the nth intermediate relay are both electrically connected to the motor Mn of the nth louver.

[0033] The second output terminal of the power adapter U7 is electrically connected to the controller U1 through the first normally open switch Jn-3 of the nth intermediate relay, and the second output terminal of the power adapter U7 is electrically connected to the controller U1 through the fourth normally open switch Jn-4 of the nth intermediate relay.

[0034] When n is greater than one, the coils of n intermediate relays Jn are connected in parallel.

[0035] like Figure 2 As shown, this embodiment includes a first intermediate relay J1, a second intermediate relay J2, an air inlet louver motor M1, and an air outlet louver motor M2.

[0036] Among them, the first selection terminal of the three-position switch SA3 is the open position, the second selection terminal of the three-position switch SA3 is the closed position, and the third selection terminal of the three-position switch SA3 is the automatic position.

[0037] The common terminal of the three-position switch SA3 is electrically connected to the normally closed terminal of the second double-control switch J2-2 of the second intermediate relay, the normally open terminal of the first double-control switch J2-1 of the second intermediate relay, the normally closed terminal of the second double-control switch J1-2 of the first intermediate relay, and the normally open terminal of the first double-control switch J1-1 of the first intermediate relay, respectively.

[0038] The coil of the second intermediate relay J2 is electrically connected to the normally open terminal of the second double-control switch J2-2 of the second intermediate relay, the normally closed terminal of the first double-control switch J2-1 of the second intermediate relay, the normally open terminal of the second double-control switch J1-2 of the first intermediate relay, and the normally closed terminal of the first double-control switch J1-1 of the first intermediate relay.

[0039] The second output terminal of the power adapter U7 is electrically connected to the controller via the first normally open switch J1-3 of the first intermediate relay. The second output terminal of the power adapter U7 is electrically connected to the controller U1 via the second normally open switch J1-4 of the first intermediate relay. The negative output terminal of the power adapter U7 is electrically connected to the forty-sixth terminal of the controller U1 via the first normally open switch J2-3 of the second intermediate relay. The negative output terminal of the power adapter U7 is electrically connected to the controller U1 via the second normally open switch J2-4 of the second intermediate relay.

[0040] Among them, the first normally open switch J1-3 of the first intermediate relay is the switch for feedback of the open position of the air inlet louver; the second normally open switch J1-4 of the first intermediate relay is the switch for feedback of the closed position of the air inlet louver; the first normally open switch J2-3 of the second intermediate relay is the switch for feedback of the open position of the exhaust louver; and the second normally open switch J2-4 of the second intermediate relay is the switch for feedback of the closed position of the exhaust louver.

[0041] When both the first normally open switch J1-3 and the second normally open switch J1-4 of the first intermediate relay are closed, the controller receives an air inlet louver opening signal; when both the first normally open switch J1-3 and the second normally open switch J1-4 of the first intermediate relay are open, the controller U1 does not receive an air inlet louver opening signal, and the controller U1 determines that the air inlet louver is closed.

[0042] When both the first normally open switch J2-3 and the second normally open switch J2-4 of the second intermediate relay are closed, the controller U1 receives an exhaust louver opening signal; when both the first normally open switch J2-3 and the second normally open switch J2-4 of the second intermediate relay are open, the controller U1 does not receive an exhaust louver opening signal, and the controller U1 determines that the exhaust louver is closed.

[0043] The common terminal of the first double-control switch J1-1 of the first intermediate relay and the common terminal of the second double-control switch J1-2 of the first intermediate relay are both electrically connected to the air inlet louver motor M1; the common terminal of the first double-control switch J2-1 of the second intermediate relay and the common terminal of the second double-control switch J2-2 of the second intermediate relay are both electrically connected to the exhaust louver motor M2.

[0044] The first output terminal of the power adapter U7 is electrically connected to the positive terminal of the battery U8, and the second output terminal of the power adapter U7 is electrically connected to the negative terminal of the battery U8. The battery U8 serves as a backup power source.

[0045] A third circuit breaker QF3 is provided between the wires connecting the first and second output terminals of the power adapter U7 and the battery U8 to protect the circuit.

[0046] A first fuse SF1 is provided between the coil of the nth intermediate relay Jn and the wire connecting the power adapter U7, and the first fuse SF1 is provided to protect the circuit.

[0047] like Figure 3 As shown, the controller U1 is electrically connected to the coil of the control relay 4, the normally open terminal of the control relay 4 is electrically connected to the grounding terminal of the cabinet 1, and the common terminal of the control relay 4 is electrically connected to the corresponding connection terminal of the grounding resistor cabinet 5.

[0048] The control cabinet connected to this solution adds control functions for the louvers and grounding resistor cabinet. It can also receive feedback signals for louver opening and closing, and feedback signals for resistor cabinet closing and overcurrent. All of these feedback and alarm signals can be uploaded to the background environmental monitoring system via communication, thereby achieving unattended operation and intelligent management.

[0049] Cabinet 1 is equipped with a local / remote control selection knob SA1: Local mode: When the switch is turned to the local position, the unit control system enters manual operation mode. At this time, the start / stop of the unit, the closing / opening of the medium-voltage switchgear, and the opening / closing of the louvers can be manually operated. The remote PLC cannot control the start / stop of the unit.

[0050] Remote control mode: When the switch is set to the remote control position, the unit's control system enters automatic operation mode. The remote PLC control system sends commands to the unit's control system to achieve automatic start / stop, louver opening / closing, automatic power-on and parallel operation, etc. In this mode, local operators can only view unit parameters and cannot manually operate the control system.

[0051] Cabinet 1 is equipped with a manual / automatic louver switch SA3: This switch is a three-position switch, with the middle position being the closed position.

[0052] Manual mode: When the switch is set to manual, the air inlet and exhaust louvers of the unit controller will open; when set to the middle position, the air inlet and exhaust louvers will close. Automatic mode: When the switch is set to automatic, the air inlet and exhaust louvers will automatically open and the unit will start when the start button is pressed. When the stop button is pressed, the air inlet and exhaust louvers will close after a 60-second delay after the unit has come to a complete stop.

[0053] When the air inlet and outlet louvers are not fully open or closed, the controller U1 will report an alarm indicating that the louvers are not fully open or closed, and upload the alarm information to the background environmental monitoring system.

[0054] Cabinet 1 is equipped with a closing / opening switch SA2: Terminal 52 of controller U1 is electrically connected to the manual closing terminal of the generator output circuit breaker via the first normally open terminal of the closing / opening control knob SA2, and terminal 53 of controller U1 is electrically connected to the manual opening terminal of the generator output circuit breaker via the second normally open terminal of the closing / opening control knob SA2. When the unit control is in local mode, turning the knob to the closing position closes the circuit breaker of the corresponding switchgear for the unit; turning it to the opening position opens the circuit breaker of the corresponding switchgear for the unit. Simultaneously, the switchgear closing / opening feedback signal is connected to the unit controller. If no closing / opening feedback signal is connected, controller U1 activates the alarm.

[0055] Display screen 2: Unit parameter display screen, which can display the unit's operating voltage, current, power, frequency, closing / opening status, louver status and other parameters and status positions.

[0056] The cabinet 1 is equipped with an emergency stop switch SEB. If an emergency occurs during the operation of the unit and it needs to be stopped, the emergency stop switch SEB can be pressed, and the unit can be directly disconnected and stopped from the operating state.

[0057] A multi-functional unit control cabinet can control the air intake and exhaust louvers, the grounding resistor cabinet, and the auxiliary equipment power supply, thereby meeting the matching needs of VC series units for different purposes.

[0058] The working principle of this utility model is as follows:

[0059] When the air inlet louvers and exhaust louvers need to be activated, turn the three-position switch SA3 to the open position. When the three-position switch SA3 is in the open position, the first intermediate relay J1 and the second intermediate relay J2 are simultaneously energized. The normally open terminals of the first double-control switch J1-1, the second double-control switch J1-2, the first double-control switch J2-1, and the second double-control switch J2-2 of the first and second intermediate relays are all closed. The normally closed terminals of the first double-control switch J1-1, the second double-control switch J1-2, the first double-control switch J2-1, and the second double-control switch J2-2 of the second intermediate relays are all open. The air inlet louver motor M1 and the exhaust louver motor M2 are both energized and started.

[0060] When it is necessary to close the air inlet louvers and the air outlet louvers, turn the three-position switch SA3 to the closed position. When the three-position switch SA3 is in the closed position, the first intermediate relay J1 and the second intermediate relay J2 are simultaneously de-energized. The normally open terminals of the first double-control switch J1-1, the second double-control switch J1-2, the first double-control switch J2-1, and the second double-control switch J2-2 of the first and second intermediate relays are all restored to their original normally open state. The normally closed terminals of the first double-control switch J1-1, the second double-control switch J1-2, the first double-control switch J2-1, and the second double-control switch J2-2 of the second intermediate relays are all restored to their original normally closed state. The air inlet louver motor M1 and the air outlet louver motor M2 are both de-energized.

[0061] When the three-position switch SA3 is turned to the automatic position, and the start / stop control knob SB1 is turned to the start position, the controller U1 energizes the coil of the eleventh relay, and the normally open switch K11 of the eleventh relay closes. The starting process is the same as when the three-position switch SA3 is turned to the open position. Both the air inlet louver motor M1 and the exhaust louver motor M2 are energized and started. When it is necessary to close the air inlet louver and the exhaust louver, when the start / stop control knob SB1 is turned to the stop position, after the unit has stopped and delayed for 60 seconds, the controller U11 de-energizes the coil of the eleventh relay, and the normally open switch K11 of the eleventh relay opens. The closing process is the same as when the three-position switch SA3 is turned to the stop position. Both the air inlet louver motor M1 and the exhaust louver motor M2 are de-energized.

[0062] Before the high-voltage unit starts operation, controller U1 energizes the coil of control relay 4, closing the normally open terminal of control relay 4, thereby controlling the grounding resistor cabinet 5 to close. When the high-voltage unit stops, controller U1 does not energize the coil of control relay 4, keeping the normally open terminal of control relay 4 normally open, thus causing the grounding resistor cabinet 5 to trip. When a short-circuit fault occurs in the circuit, causing the grounding resistor cabinet 5 to trip, the fault signal is fed back to controller U1 for alarm and uploaded to the background environmental monitoring system.

[0063] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A practical diesel generator set control cabinet, comprising a cabinet (1), wherein the cabinet (1) is provided with a controller (U1) and a display panel (3), wherein the display panel (3) is provided with a display screen (2) electrically connected to the controller (U1), a local / remote start knob (SA1) and a closing / opening knob (SA2), characterized in that, The cabinet (1) is also equipped with an integrated unit, a louver control module, a grounding resistor cabinet and an integrated auxiliary equipment power supply terminal. The louver control module is electrically connected to the louver motor (Mn) in the machine room. The louver control module is equipped with a signal feedback terminal that is electrically connected to the controller (U1). The grounding resistor cabinet (5) is electrically connected to each grounding terminal in the cabinet (1) through a wire. The wire is equipped with a control relay (4). The closing / opening knob (SA2) is controlled by the controller (U1) and the control relay (4) in linkage. The integrated auxiliary equipment power supply terminal (U9) is located in the cabinet (1) and is electrically connected to the integrated unit and the louver control module.

2. A practical diesel generator control cabinet according to claim 1, characterized in that, The integrated unit includes an AC pre-supply pump (U2), a first heater (U3), a second heater (U4), a battery heater (U5), and a motor heater (U6). Circuit breakers are installed on the wires connecting the power input terminals of the AC pre-supply pump (U2), the first heater (U3), the second heater (U4), the battery heater (U5), and the motor heater (U6) to the power input terminal (U9) of the integrated power auxiliary equipment.

3. A practical diesel generator set control cabinet according to claim 1, characterized in that, The louver control module includes a power adapter (U7), a three-position switch (SA3), a louver motor (Mn), and an eleventh intermediate relay; The coil of the eleventh intermediate relay is electrically connected to the controller (U1); The input terminal of the power adapter (U7) is electrically connected to the power terminal (U9) of the integrated power auxiliary device. The first output terminal of the power adapter (U7) is electrically connected to the coil of the nth intermediate relay (Jn). The coil of the nth intermediate relay (Jn) is simultaneously electrically connected to the first selection terminal of the three-position switch (SA3) and the normally open switch (K11) of the eleventh intermediate relay. The other end of the normally open switch (K11) of the eleventh intermediate relay is electrically connected to the third selection terminal of the three-position switch (SA3). The common terminal of the three-position switch (SA3) is electrically connected to the second output terminal of the power adapter (U7). The normally closed terminal of the first double-position switch (Jn-1) of the nth intermediate relay and the normally open terminal of the second double-position switch (Jn-2) of the nth intermediate relay are both electrically connected to the first output terminal of the power adapter (U7), and the normally open terminal of the first double-position switch (Jn-1) of the nth intermediate relay and the normally closed terminal of the second double-position switch (Jn-2) of the nth intermediate relay are both electrically connected to the second output terminal of the power adapter (U7). The common terminal of the first double-position switch (Jn-1) of the nth intermediate relay and the common terminal of the second double-position switch (Jn-2) of the nth intermediate relay are both electrically connected to the motor (Mn) of the nth louver.

4. A practical diesel generator control cabinet according to claim 3, characterized in that, The second output terminal of the power adapter (U7) is electrically connected to the first signal feedback terminal of the controller (U1) through the first normally open switch (Jn-3) of the nth intermediate relay, and the second output terminal of the power adapter (U7) is electrically connected to the second signal feedback terminal of the controller (U1) through the fourth normally open switch (Jn-4) of the nth intermediate relay.

5. A practical diesel generator control cabinet according to claim 3, characterized in that, When n is greater than one, the coils of the n intermediate relays (Jn) are connected in parallel.

6. A practical diesel generator set control cabinet according to claim 3, characterized in that, The first output terminal of the power adapter (U7) is electrically connected to the positive terminal of the battery (U8), and the second output terminal of the power adapter (U7) is electrically connected to the negative terminal of the battery (U8).

7. A practical diesel generator set control cabinet according to claim 3, characterized in that, A third circuit breaker (QF3) is provided between the first and second output terminals of the power adapter (U7) and the wires connecting them to the battery (U8).

8. A practical diesel generator set control cabinet according to claim 3, characterized in that, A first fuse (SF1) is provided between the coil of the nth intermediate relay (Jn) and the wire connecting the power adapter (U7).

9. A practical diesel generator set control cabinet according to claim 1, characterized in that, The controller (U1) is electrically connected to the coil of the control relay (4), the normally open terminal of the control relay (4) is electrically connected to the grounding terminal of the cabinet (1), and the common terminal of the control relay (4) is electrically connected to the corresponding connection terminal of the grounding resistor cabinet (5).

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