A feedback device for fuel oil pump circuit of industrial and mining diesel locomotive
By designing a fuel oil pump circuit feedback device, real-time status monitoring and fault simulation of the fuel oil pump were realized, solving the monitoring blind spots and training shortcomings of traditional circuits, reducing the failure rate and maintenance costs, and improving the safety and operational efficiency of the locomotive.
Patent Information
- Application Number
- CN202522321236.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-31
AI Technical Summary
Traditional industrial and mining diesel locomotive fuel pump control circuits lack real-time status monitoring capabilities, fault simulation functions, and driver and crew training, resulting in low fault diagnosis efficiency, numerous hidden faults, poor operational safety and reliability, and high maintenance costs.
A fuel oil pump circuit feedback device was designed, comprising a control module, an execution module, a status acquisition module, and a display module. This device enables the start-stop control, real-time status monitoring, and fault simulation of the fuel oil pump. Feedback is provided through LED indicators and an LCD screen, and protection is achieved by integrating a current sensor and a fuse.
This achieved a 35% reduction in the failure rate of the fuel pump system, a 20% reduction in maintenance costs, improved the fault handling capabilities of drivers and crew, and ensured the safe and stable operation of the locomotive.
Smart Images
Figure CN224679605U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of locomotive electronic control system technology, and in particular to a fuel oil pump circuit feedback device for industrial and mining diesel locomotives. Background Technology
[0002] As a core component of the diesel engine's fuel supply system, the fuel pump in mining locomotives directly determines the stability of the locomotive's power output and is crucial for the continuity of mining operations. However, traditional fuel pump control circuits only have basic start-stop control functions, and there are many problems that urgently need to be solved in practical applications:
[0003] First, the condition monitoring capability is severely inadequate. Traditional circuits cannot provide real-time feedback on the operating status of the fuel pump motor, the contactor's engagement status, and the continuity of the circuit. When the fuel pump malfunctions, troubleshooting relies entirely on the manual experience of maintenance personnel, which is not only inefficient but also prone to overlooking hidden faults, leading to incomplete fault handling. Second, there is a lack of training capabilities for drivers and crew. Because traditional circuits cannot simulate various fault scenarios of the fuel pump, drivers and crew find it difficult to intuitively understand the control logic of the fuel pump. When faced with actual faults, they often cannot quickly and accurately determine the cause of the fault and take effective measures, reducing the safety and reliability of locomotive operation. Finally, hidden faults lead to a high repair rate. Traditional circuits cannot provide early warnings for hidden faults in the fuel pump. These hidden faults gradually worsen during long-term operation, eventually leading to sudden shutdown of the fuel pump, which not only affects the progress of mining production but also significantly increases the repair costs of the locomotive.
[0004] In the existing technology, there is no circuit design optimized for the specific control logic and fault modes of fuel oil pumps in industrial and mining diesel locomotives, which cannot meet the needs of real-time monitoring of fuel oil pumps, fault simulation, and reduction of operation and maintenance costs. Summary of the Invention
[0005] In order to overcome the above-mentioned problems in the existing technology, this utility model provides a fuel oil pump circuit feedback device for industrial and mining diesel locomotives, which can monitor the operating status of the fuel oil pump in real time, simulate fault scenarios, reduce the failure rate of the fuel oil pump system, reduce maintenance costs, and improve locomotive maintenance efficiency and the fault handling ability of drivers and crew through visual feedback.
[0006] To achieve the above objectives, this utility model provides a fuel oil pump circuit feedback device for industrial and mining diesel locomotives, the device comprising:
[0007] The control module is used to control the start and stop of the fuel oil pump and to provide control signals for fault simulation.
[0008] The execution module includes a fuel oil pump contactor and a fuse. The fuel oil pump contactor is used to drive the fuel oil pump motor to start and stop, and the fuse is used for overcurrent or short circuit protection.
[0009] The status acquisition module integrates a current sensor to collect the oil pump motor operating current, contactor contact status and circuit continuity signals in real time, and transmits the collected signals to the display module.
[0010] The display module includes LED indicator lights and an LCD screen. The LED indicator lights are used to dynamically display the operating status of the fuel oil pump. The green light is always on during normal operation, and the red light is on during a fault. The LCD screen is used to display the fault type and fault location information.
[0011] Preferably, the circuit connection path of the control module is as follows: the positive terminal of the 110V DC circuit sequentially passes through the positive terminal of XK—line node 101H—terminal C1 / 6 of the control module wiring unit—line node 101L—main control switch 1AK—line node 201L—positive terminal of auxiliary switch 3AK—fuel pump switch 4AK—line node 253—terminal C1 / 56 of the control module wiring unit—line node 253A—terminal 39 of wiring terminal B4—line node 253B—positive terminal of QC contact—line node 253X—fuel pump contactor RBC coil—line node 268C—terminal 13 of wiring terminal B4—line node 268C—terminal 24 of wiring terminal B1—negative terminal of XK—negative terminal of 110V, forming a control loop for controlling the operation of the fuel pump contactor RBC.
[0012] Preferably, a feedback loop is provided between the display module and the execution module. The connection path of the feedback loop is as follows: 110V DC circuit positive terminal through XK positive terminal — line node 105A — fuse 1RD — line node 107 — RC resistor — line node 101 — NL filter element — line node 101A — terminal 29 of terminal B1 — terminal 28 of terminal B1 — terminal 27 of terminal B1 — line node 101E — fuel pump contactor RBC main contact — line node 14 7—Fuel pump changeover switch 3WHK—Line node 148—Terminal 15 of terminal B2—Line node 148A—LED indicator RBDD—Line node 140—Terminal 11 of terminal B2—Line node 140C—Circuit breaker 6ZK—Line node 100G—Line node 100S—Grounding terminal Bd3—Line node 100LL—XK negative terminal. The operating status of the fuel pump motor is fed back through the engagement of the main contacts of the fuel pump contactor RBC and the display of the LED indicator.
[0013] Preferably, the fault simulation function is achieved by manually disconnecting the fuel oil pump contactor RBC contact or disconnecting the line node in the feedback loop. After the status acquisition module detects the fault signal, it triggers the display module to switch to the fault display state.
[0014] Preferably, the fuel oil pump contactor RBC is an S140A type DC contactor.
[0015] Preferably, the feedback loop further includes an integrated NL filter element.
[0016] Compared with existing technologies, the fuel oil pump circuit feedback device for industrial and mining diesel locomotives provided by this utility model has the following beneficial effects: This utility model, through the innovative design of a dedicated circuit feedback device for fuel oil pumps, achieves deep integration of status monitoring, fault simulation, and intelligent display, effectively solving the monitoring blind spots and training shortcomings of traditional control circuits. Practical application verification shows that this device can reduce the failure rate of the fuel oil pump system by 35% and maintenance costs by 20%, while also improving the fault handling capabilities of drivers and crew, ensuring the safe and stable operation of industrial and mining diesel locomotives, and possessing significant engineering application value and promising prospects for widespread application.
[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 A schematic diagram of the feedback device for the fuel oil pump circuit of an industrial and mining diesel locomotive provided in this embodiment of the utility model;
[0020] Figure 2 A circuit diagram of a fuel oil pump for an industrial and mining locomotive provided for an embodiment of this utility model;
[0021] Figure 3 Feedback circuit diagram of the fuel oil pump circuit feedback device for industrial and mining locomotives provided in this embodiment of the utility model. Detailed Implementation
[0022] In the description of this utility model, 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.
[0023] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0024] This utility model embodiment provides a fuel oil pump circuit feedback device for industrial and mining diesel locomotives. Figure 1 A schematic diagram of the feedback device for the fuel oil pump circuit of an industrial and mining diesel locomotive provided in this embodiment of the utility model; Figure 2 A circuit diagram of a fuel oil pump for an industrial and mining locomotive provided for an embodiment of this utility model; Figure 3 This is a feedback circuit diagram of a fuel oil pump circuit feedback device for an industrial and mining diesel locomotive, provided as an embodiment of the present invention. Figures 1-3 As shown, the device includes:
[0025] The control module is used to control the start and stop of the fuel oil pump, and also provides control signals for fault simulation.
[0026] It should be noted that the circuit connection path of the control module is as follows: by closing the main control switch 1AK, the positive terminal of the 110V DC circuit is connected through the fuel pump switch 4AK, via the positive terminal of XK—line node 101H—terminal C1 / 6 of the control module wiring unit—line node 101L—main control switch 1AK—line node 201L—positive terminal of auxiliary switch 3AK—fuel pump switch 4AK—line node 253—terminal C1 / 56 of the control module wiring unit—line node 253A—terminal 39 of wiring terminal B4—line node 253B—positive terminal of QC contact—line node 253X—fuel pump contactor RBC coil—line node 268C—terminal 13 of wiring terminal B4—line node 268C—terminal 24 of wiring terminal B1—negative terminal of XK—110V negative terminal, forming a control loop to control the operation of the fuel pump contactor RBC.
[0027] Specifically, the aforementioned switches can be S408A type toggle switch 3WHK, S403 type push button switch 1AK, N314.00.00 type piano key switch 4AK, or LW5-16 type switch 6ZK, and the fuel oil pump can be started and stopped through logic control.
[0028] The execution module includes a fuel pump contactor RBC, a TZC1 type resistor, and a fuse. The fuel pump contactor is used to drive the fuel pump motor to start and stop and execute control commands. The fuse is used for overcurrent or short-circuit protection. Specifically, the fuel pump contactor RBC can be an S140A type DC contactor.
[0029] The status acquisition module integrates a current sensor to collect the operating current of the oil pump motor, the contactor contact status, and the circuit continuity signal in real time, and transmits the collected signals to the display module.
[0030] The display module includes an LED indicator (RBDD) and an LCD screen. The LED indicator is used to dynamically display the operating status of the fuel pump. During normal operation, the green light is always on, and during a fault, the red light is on. The LCD screen is used to display the fault type and fault location information.
[0031] It should be noted that a feedback loop is provided between the display module and the execution module. The connection path of the feedback loop is as follows: 110V DC circuit positive terminal through XK positive terminal — line node 105A — fuse 1RD — line node 107 — RC resistor — line node 101 — NL filter element — line node 101A — terminal 29 of terminal B1 — terminal 28 of terminal B1 — terminal 27 of terminal B1 — line node 101E — fuel pump contactor RBC main contact — line node 147 — fuel Fuel pump changeover switch 3WHK (1 pump) — Line node 148 — Terminal 15 of terminal B2 — Line node 148A — LED indicator RBDD — Line node 140 — Terminal 11 of terminal B2 — Line node 140C — Circuit breaker 6ZK — Line node 100G — Line node 100S — Grounding terminal Bd3 — Line node 100LL — XK negative terminal. The working status of the fuel pump motor is fed back through the engagement of the main contact of the fuel pump contactor RBC and the display of the LED indicator RBDD.
[0032] 1. Control circuit operation process (refer to...) Figure 2 )
[0033] The control circuit of this utility model is used to realize the action control of the fuel oil pump contactor RBC. The specific connection and working process are as follows:
[0034] Close the main control switch 1AK to supply power to the control circuit; then close the fuel pump switch 4AK. The positive terminal of the 110V DC circuit passes sequentially through the positive terminal of XK—line node 101H—terminal 6 C1 / 6 of the control module wiring unit C1—line node 101L—main control switch 1AK—line node 201L—positive terminal of auxiliary switch 3AK—fuel pump switch 4AK—line node 253—terminal 56 C1 / 56 of the control module wiring unit C1—line node 25 3A—Terminal 39 of terminal B4 B4 / 39—Line node 253B—Positive terminal of contact QC—Line node 253X—Coil of fuel pump contactor RBC—Line node 268—Terminal 13 of terminal B4 B4 / 13—Line node 268C—Terminal 24 of terminal B1 B1 / 24—XK negative terminal—110V negative terminal, forming a complete circuit. The contactor RBC coil is energized, and its main contacts close, preparing for the start of the fuel pump motor.
[0035] 2. Feedback circuit operation process (refer to...) Figure 3 )
[0036] The feedback circuit is used to provide real-time feedback on the operating status of the fuel pump motor. The specific connection and operation process are as follows:
[0037] The 110V DC circuit positive terminal passes through XK positive terminal—line node 105A—fuse 1RD—line node 107—resistor RC—line node 101—filter element NL—line node 101A—terminal 29 of terminal B1 (B1 / 29)—terminal 28 of terminal B1 (B1 / 28)—terminal 27 of terminal B1 (B1 / 27)—line node 101E—main contact of fuel pump contactor RBC—line node 147—fuel pump changeover switch 3WHK (switch to pump 1 position)—line node 148—terminal 15 of terminal B2 (B2 / 15)—line node 148A—LED indicator 1RBDD—line node 140—terminal 11 of terminal B2 (B2 / 11)—line node 140C—circuit breaker 6ZK—line node 100G—line node 100S—grounding terminal Bd3—line node 100LL—XK negative terminal, forming a feedback loop.
[0038] When the main contact of the contactor RBC is engaged, the feedback circuit is activated, the fuel pump motor starts, and the current sensor sends a feedback signal to the display module. The LED indicator 1RBDD remains green, indicating that the fuel pump motor is operating normally. If the main contact of the contactor RBC is not engaged, such as if the contactor fails or there is an open circuit, the feedback circuit is disconnected, and the LED indicator 1RBDD goes out. If combined with fault simulation control, it can also be switched to a red light to indicate the fault status, thus achieving real-time feedback on the working status of the fuel pump.
[0039] 3. Testing and Calibration
[0040] To ensure the stable and reliable operation of the fuel oil pump circuit feedback device of this utility model, the following tests and calibrations must be performed after installation:
[0041] 3.1. Continuity test
[0042] With the circuit de-energized, use a multimeter to measure the impedance values of each loop in the control circuit and feedback circuit, and check whether there are short circuits (impedance approaching 0) or loose connections (impedance infinite) at each line node, to ensure that each loop is properly connected.
[0043] 3.2. Functional Verification
[0044] Normal start-stop function verification: Close the main control switch 1AK and the fuel pump switch 4AK, observe whether the contactor RBC engages normally, whether the fuel pump motor starts, and whether the LED indicator RBDD is constantly lit in green; open the fuel pump switch 4AK, observe whether the contactor RBC opens, whether the fuel pump motor stops running, and whether the LED indicator 1RBDD goes out, to verify whether the normal start-stop function is normal.
[0045] Fault simulation function verification: Manually disconnect the contacts of the contactor RBC to simulate a contactor failure. After the status acquisition module detects the fault signal, it triggers the display module to switch to the fault display state. The display module switches to red and outputs the fault. Observe whether the LED indicator of the display module switches from green to red and whether the LCD screen displays the corresponding fault information. Manually disconnect a line node in the feedback circuit to simulate a line open circuit fault. Repeat the above observation steps to verify whether the fault simulation function is normal.
[0046] Protection function verification: By adjusting the circuit parameters, simulate the current over-limit situation caused by the oil pump motor jamming, observe whether the fuse 1RD blows in time and whether the circuit is broken, and verify whether the protection mechanism is effective.
[0047] Compared with existing technologies, the fuel oil pump circuit feedback device for industrial and mining diesel locomotives provided in this embodiment of the invention has the following beneficial effects: Through the coordinated operation of the status acquisition module and the display module, the operating status of the fuel oil pump can be fed back in real time. Operators can quickly grasp the equipment's operating condition through LED indicator lights and an LCD screen, avoiding the escalation of faults due to untimely status monitoring. Integrating status monitoring, fault simulation, and safety protection functions, it not only solves the problem of blind spots in traditional circuit monitoring but also provides an effective tool for driver and crew training, while ensuring the safe operation of the circuit. By providing early warning of latent faults and improving the fault handling capabilities of drivers and crew, the failure rate of the fuel oil pump system can be reduced by more than 35%, and maintenance costs reduced by 20%, significantly improving the locomotive's operational economy and reliability. Targeting the characteristics of the industrial and mining environment, the circuit's anti-interference and durability design has been optimized, enabling stable operation in complex environments such as dust and vibration, meeting the working requirements of industrial and mining diesel locomotives.
[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A feedback device for a fuel oil pump circuit in an industrial and mining diesel locomotive, characterized in that, include: The control module is used to control the start and stop of the fuel oil pump and to provide control signals for fault simulation. The execution module includes a fuel oil pump contactor and a fuse. The fuel oil pump contactor is used to drive the fuel oil pump motor to start and stop, and the fuse is used for overcurrent or short circuit protection. The status acquisition module integrates a current sensor to collect the oil pump motor operating current, contactor contact status and circuit continuity signals in real time, and transmits the collected signals to the display module. The display module includes LED indicator lights and an LCD screen. The LED indicator lights are used to dynamically display the operating status of the fuel oil pump. The green light is always on during normal operation, and the red light is on during a fault. The LCD screen is used to display the fault type and fault location information.
2. The feedback device for the fuel oil pump circuit of an industrial and mining diesel locomotive according to claim 1, characterized in that, The circuit connection path of the control module is as follows: the positive terminal of the 110V DC circuit passes sequentially through the positive terminal of XK—line node 101H—terminal C1 / 6 of the control module wiring unit—line node 101L—main control switch 1AK—line node 201L—positive terminal of auxiliary switch 3AK—fuel pump switch 4AK—line node 253—terminal C1 / 56 of the control module wiring unit—line node 253A—terminal 39 of wiring terminal B4—line node 253B—positive terminal of QC contact—line node 253X—fuel pump contactor RBC coil—line node 268C—terminal 13 of wiring terminal B4—line node 268C—terminal 24 of wiring terminal B1—negative terminal of XK—negative terminal of 110V, forming a control loop for controlling the operation of the fuel pump contactor RBC.
3. The feedback device for the fuel oil pump circuit of an industrial and mining diesel locomotive according to claim 2, characterized in that, A feedback loop is provided between the display module and the execution module. The connection path of the feedback loop is as follows: 110V DC circuit positive terminal through XK positive terminal — line node 105A — fuse 1RD — line node 107 — RC resistor — line node 101 — NL filter element — line node 101A — terminal 29 of terminal B1 — terminal 28 of terminal B1 — terminal 27 of terminal B1 — line node 101E — fuel pump contactor RBC main contact — line node 147 — The fuel pump changeover switch 3WHK—line node 148—terminal 15 of terminal B2—line node 148A—LED indicator RBDD—line node 140—terminal 11 of terminal B2—line node 140C—circuit breaker 6ZK—line node 100G—line node 100S—grounding terminal Bd3—line node 100LL—XK negative terminal, provides feedback on the operating status of the fuel pump motor through the engagement of the main contacts of the fuel pump contactor RBC and the display of the LED indicator.
4. The feedback device for the fuel oil pump circuit of an industrial and mining diesel locomotive according to claim 3, characterized in that, The fault simulation function is achieved by manually disconnecting the fuel oil pump contactor RBC contact or disconnecting the line node in the feedback loop. After the status acquisition module detects the fault signal, it triggers the display module to switch to the fault display state.
5. A feedback device for a fuel oil pump circuit in an industrial and mining locomotive according to claim 4, characterized in that, The fuel oil pump contactor RBC is an S140A type DC contactor.
6. The feedback device for the fuel oil pump circuit of an industrial and mining diesel locomotive according to claim 3, characterized in that, The feedback loop also includes an integrated NL filter element.