Oil pump control circuit and electronic equipment
By using a multi-sensor switch system and safety control components, the problem of low safety during oil pump startup is solved, and stable startup of the oil pump and equipment protection are achieved under safe conditions.
Patent Information
- Application Number
- CN202422958913.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-02
AI Technical Summary
In existing technologies, oil pumps have low startup safety and are prone to accidents and equipment damage due to misoperation or abnormal conditions.
A multi-sensor switch system is adopted, including a rollaway switch, an electrostatic induction switch, an arm position switch, a start switch, and an AC contactor control coil, to ensure that the oil pump only starts when the vehicle is parked stably, static electricity is released, and the arm is correctly positioned. Safety control is achieved by combining indicator lights, key sensor switches, emergency stop buttons, thermal relays, and fuses.
It improves the safety of oil pump startup, avoids safety accidents caused by misoperation, enhances equipment protection, and ensures that the oil pump operates under safe conditions.
Smart Images
Figure CN223498108U_ABST
Abstract
Description
Technical Field
[0001] This application relates to an oil pump control circuit and electronic device, and relates to the field of oil pump technology. Background Technology
[0002] In the field of oil pump technology, controlling the safe start-up of oil pumps is of paramount importance.
[0003] In related technologies, the oil pump is mainly controlled by a single start switch, which lacks safety safeguards and is prone to accidents and equipment damage due to misoperation or abnormal conditions. This results in relatively low safety during oil pump startup. Utility Model Content
[0004] This utility model provides an oil pump control circuit and electronic device to at least solve the technical problem of low safety during oil pump startup in related technologies. The technical solution of this application is as follows:
[0005] According to a first aspect of the embodiments of this application, an oil pump control circuit is provided, comprising: a three-phase power supply, an oil pump, a first AC contactor, and an oil pump control module; one end of the first AC contactor is connected to the three-phase power supply; the other end of the first AC contactor is connected to the oil pump; both ends of the oil pump control module are respectively connected to any two phases of the three-phase power supply; the oil pump control module includes a runaway switch, an electrostatic induction switch, an arm position switch, a start switch, and an AC contactor control coil.
[0006] The trolley switch, the electrostatic induction switch, the loading arm position switch, the start switch, and the AC contactor control coil are connected in series; the AC contactor control coil is used to control the first AC contactor to close after being energized.
[0007] In one possible implementation, the oil pump control module described above further includes a first indicator light and a second AC contactor. The start switch and the control coil of the AC contactor are connected in parallel with the first indicator light and the second AC contactor. The control coil of the AC contactor is also used to control the second AC contactor to disconnect after energization.
[0008] In one possible implementation, the oil pump control module described above further includes a second indicator light, which is connected in parallel with the AC contactor control coil.
[0009] In one possible implementation, the oil pump control module described above further includes a key sensor switch, which is used to close when a key is present in the key placement area.
[0010] In one possible implementation, the oil pump control module described above also includes an emergency stop button.
[0011] In one possible implementation, the oil pump control module described above further includes a thermal relay and / or a fuse.
[0012] In one possible implementation, a thermal relay is also included between the first AC contactor and the oil pump.
[0013] In one possible implementation, the fuse and / or disconnecting switch are also included between the first AC contactor and the three-phase power supply.
[0014] According to a second aspect of the present application, an electronic device is provided, the electronic device comprising: a printed circuit board and a circuit as described in the first aspect above; the circuit is disposed on the printed circuit board.
[0015] The technical solution of the first aspect provided by the embodiments of this application has at least the following beneficial effects:
[0016] The technical solution provided in this application embodiment ensures that after the start switch is closed, the AC contactor control coil will only be energized and the first AC contactor will close if the vehicle is parked stably, its static electricity has been discharged, and the loading arm is correctly positioned. This, through the judgment of multiple inductive switches, ensures that the oil pump starts under safe conditions, effectively preventing safety accidents caused by misoperation.
[0017] 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
[0018] 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.
[0019] Figure 1 This is a flowchart illustrating an oil pump control circuit according to an exemplary embodiment;
[0020] Figure 2 This is a schematic diagram of yet another oil pump control circuit according to an exemplary embodiment;
[0021] Figure 3 This is a schematic diagram of yet another oil pump control circuit according to an exemplary embodiment;
[0022] Figure 4 This is a schematic diagram of yet another oil pump control circuit according to an exemplary embodiment;
[0023] Figure 5This is a schematic diagram of yet another oil pump control circuit according to an exemplary embodiment;
[0024] Figure 6 This is a schematic diagram of yet another oil pump control circuit according to an exemplary embodiment;
[0025] Figure 7 This is a schematic diagram of yet another oil pump control circuit according to an exemplary embodiment;
[0026] Figure 8 This is a schematic diagram of yet another oil pump control circuit according to an exemplary embodiment. Detailed Implementation
[0027] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0028] 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.
[0029] Before providing a detailed description of the oil pump control circuit provided in this application, let's briefly introduce the application scenarios involved in this application.
[0030] In the field of oil pump technology, controlling the safe start-up of oil pumps is of paramount importance.
[0031] In related technologies, the oil pump is mainly controlled by a single start switch, which lacks safety safeguards and is prone to accidents and equipment damage due to misoperation or abnormal conditions. This results in relatively low safety during oil pump startup.
[0032] Figure 1 This is a schematic diagram of an oil pump control circuit according to an exemplary embodiment. Figure 1As shown, the oil pump control circuit includes: a three-phase power supply, an oil pump, a first AC contactor, and an oil pump control module; one end of the first AC contactor is connected to the three-phase power supply; the other end of the first AC contactor is connected to the oil pump; both ends of the oil pump control module are respectively connected to any two phases of the three-phase power supply; the oil pump control module includes a runaway switch, an electrostatic induction switch, an arm position switch, a start switch, and an AC contactor control coil.
[0033] The trolley switch, the electrostatic induction switch, the loading arm position switch, the start switch, and the AC contactor control coil are connected in series; the AC contactor control coil is used to control the first AC contactor to close after being energized.
[0034] It should be noted that the positions of the slipway switch, electrostatic induction switch, loading arm position switch, start switch, and AC contactor control coil are not limited in this regard.
[0035] The rollaway switch is used to ensure that the vehicle is parked stably and to prevent it from rolling away. The rollaway switch closes when the vehicle is parked stably.
[0036] Electrostatic discharge (ESD) switches are used to detect the discharge of static electricity from a vehicle, ensuring operational safety. The ESD switch closes once the static electricity has been discharged. In practical applications, ESD switches are also known as ESD clip switches.
[0037] The loading arm position switch is used to detect whether the loading arm is correctly placed. When the loading arm is correctly placed, the loading arm position switch closes.
[0038] Understandably, the technical solution provided in this application ensures that after the start switch is closed, the AC contactor control coil will only be energized and the first AC contactor will close if the vehicle is parked stably, its static electricity has been released, and the loading arm is correctly positioned. This, through the judgment of multiple inductive switches, ensures that the oil pump starts under safe conditions, effectively preventing safety accidents caused by misoperation.
[0039] Figure 2 This is a schematic diagram illustrating yet another oil pump control circuit according to an exemplary embodiment. (See diagram below.) Figure 2 As shown, the oil pump control module in the oil pump control circuit also includes a first indicator light and a second AC contactor. The start switch and the control coil of the AC contactor are connected in parallel with the first indicator light and the second AC contactor. The control coil of the AC contactor is also used to control the second AC contactor to disconnect after being energized.
[0040] Understandably, when the vehicle is parked stably, its static electricity has dissipated, and the loading arm is correctly positioned, the first indicator light will illuminate because the second AC contactor is normally closed. When the start switch is closed, the AC contactor control coil is energized, causing the second AC contactor to open. At this point, the first indicator light will turn off, indicating that the start switch has been successfully closed.
[0041] Figure 3 This is a schematic diagram illustrating yet another oil pump control circuit according to an exemplary embodiment. (See diagram below.) Figure 3 As shown, the oil pump control module in the oil pump control circuit also includes a second indicator light, which is connected in parallel with the AC contactor control coil.
[0042] Understandably, in the technical solution provided in this application, when the vehicle is parked stably, the static electricity of the vehicle has been discharged, and the loading arm has been correctly placed, the first indicator light can illuminate because the second AC contactor is normally closed. When the start switch is closed, the AC contactor control coil is energized and controls the second AC contactor to open. At this time, the first indicator light goes out, and the second indicator light illuminates, indicating that the start switch has been successfully closed.
[0043] Figure 4 This is a schematic diagram illustrating yet another oil pump control circuit according to an exemplary embodiment. (See diagram below.) Figure 4 As shown, the oil pump control module in the oil pump control circuit also includes a key sensor switch, which is used to close when a key is placed in the key placement area.
[0044] It is understood that the technical solution provided in this application, by adding a key sensing switch to the oil pump control module, can determine whether the key has been placed in a designated position, thereby improving the safety of oil pump startup.
[0045] Figure 5 This is a schematic diagram illustrating yet another oil pump control circuit according to an exemplary embodiment. (See diagram below.) Figure 5 As shown, the oil pump control module in the oil pump control circuit also includes an emergency stop button.
[0046] It is understood that the technical solution provided in this application embodiment, by setting an emergency stop button, can stop the oil pump in case of emergency or when it is necessary to temporarily stop the oil pump, thereby improving the safety of oil pump operation.
[0047] Figure 6 This is a schematic diagram illustrating yet another oil pump control circuit according to an exemplary embodiment. (See diagram below.) Figure 6 As shown, the oil pump control module in the oil pump control circuit also includes a thermal relay and / or a fuse.
[0048] It is understood that the technical solution provided in this application embodiment, by setting a thermal relay and / or a fuse in the oil pump control module, can effectively protect the oil pump control module if the oil pump control module is overloaded for a long time or the overload current is large, and the temperature rise will exceed the allowable value.
[0049] Figure 7 This is a schematic diagram illustrating yet another oil pump control circuit according to an exemplary embodiment. (See diagram below.) Figure 7 As shown, a thermal relay is also included between the first AC contactor and the oil pump in the oil pump control circuit.
[0050] It is understood that the technical solution provided in this application embodiment, by setting a thermal relay between the first AC contactor and the oil pump, can effectively protect the oil pump in the event of long overload time or large overload current.
[0051] Figure 8 This is a schematic diagram illustrating yet another oil pump control circuit according to an exemplary embodiment. (See diagram below.) Figure 8 As shown, the oil pump control circuit also includes the fuse and / or a disconnecting switch between the first AC contactor and the three-phase power supply.
[0052] It is understood that the technical solution provided in this application embodiment, by setting a fuse and / or a disconnecting switch between the first AC contactor and the three-phase power supply, can effectively protect the oil pump safety in the event of a fault at the three-phase power supply.
[0053] In practical applications, a DCS interlock can be connected in series with the oil pump control module. This DCS interlock enables a higher level of safety control. For example, when the oil level in the storage tank is low, the DCS interlock can prevent the AC contactor control coil from being energized, thus stopping the oil pump from operating.
[0054] Through the above description of the implementation methods, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the electronic device can be divided into different functional modules to complete all or part of the functions described above.
[0055] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An oil pump control circuit, characterized in that, The circuit includes: a three-phase power supply, an oil pump, a first AC contactor, and an oil pump control module; one end of the first AC contactor is connected to the three-phase power supply; the other end of the first AC contactor is connected to the oil pump; both ends of the oil pump control module are respectively connected to any two phases of the three-phase power supply; the oil pump control module includes a slip switch, an electrostatic induction switch, an arm position switch, a start switch, and an AC contactor control coil; The trolley switch, the electrostatic induction switch, the loading arm position switch, the start switch, and the AC contactor control coil are connected in series; the AC contactor control coil is used to control the first AC contactor to close after being energized.
2. The circuit according to claim 1, characterized in that, The oil pump control module also includes a first indicator light and a second AC contactor. The start switch and the control coil of the AC contactor are connected in parallel with the first indicator light and the second AC contactor. The control coil of the AC contactor is also used to control the second AC contactor to disconnect after power is applied.
3. The circuit according to claim 1 or 2, characterized in that, The oil pump control module also includes a second indicator light, which is connected in parallel with the control coil of the AC contactor.
4. The circuit according to any one of claims 1-3, characterized in that, The oil pump control module also includes a key sensor switch, which is used to close when a key is present in the key placement area.
5. The circuit according to claim 4, characterized in that, The oil pump control module also includes an emergency stop button.
6. The circuit according to any one of claims 1-5, characterized in that, The oil pump control module also includes a thermal relay and / or a fuse.
7. The circuit according to claim 6, characterized in that, A thermal relay is also included between the first AC contactor and the oil pump.
8. The circuit according to claim 6, characterized in that, Between the first AC contactor and the three-phase power supply, there is also the fuse and / or the disconnecting switch.
9. An electronic device, characterized in that: It includes a printed circuit board and the circuit as described in claim 8; the circuit is disposed on the printed circuit board.