Automatic control and interlocking practical training system for oil depot

Abstract

The invention discloses an automatic control and interlocking practical training system for an oil depot. A main control unit is in signal connection with an equipment monitoring unit, a working mode selection unit, an equipment simulation unit and a liquid level alarm simulation unit; the working mode selection unit is in signal connection with the oil receiving system simulation unit, the oil filling system simulation unit and the oil pouring system simulation unit and is used for selecting the working mode of an oil depot, the equipment simulation unit is used for simulating oil depot equipment, and the main control unit is used for processing and transmitting data; the equipment monitoring unit collects parameters of the equipment simulation unit, the oil receiving simulation unit is used for controlling the equipment simulation unit to complete an oil depot oil receiving process, the oiling simulation unit is used for controlling the equipment simulation unit to complete an oil depot oil outlet process, and the oil pouring system simulation unit is used for controlling the equipment simulation unit to complete an oil depot oil pouring process. The liquid level alarm simulation unit generates a high-low liquid level alarm simulation signal based on a user instruction and sends the high-low liquid level alarm simulation signal to the equipment simulation unit to generate a high-low liquid level alarm.

Description

Technical Field

[0001] The present invention relates to the technical field of oil depot automatic control, and more particularly to an automatic control and interlocking training system for oil depots. Background Art

[0002] The oil depot's automatic control system primarily involves continuously collecting pressure and temperature signals from the apron refueling main under unattended automated control. It then controls the oil pump's frequency converter for constant pressure based on the deviation between the set pressure and the actual pressure. It also uses the pump's outlet flow rate signal to start and stop the power-frequency fuel pump, ensuring constant pressure in the refueling pipeline and thus achieving a stable oil supply. The "interlock system" is a safety interlock device or device that includes common production process signal alarms and interlocks to ensure the normal start and stop of production equipment and equipment, prevent accidents, and minimize equipment damage during the operation of the automatic control system. Maintaining the integrity of the interlock system ensures safe production and stable oil supply at the oil depot, preventing major equipment and personnel casualties. The oil depot's automatic control system primarily includes oil supply and oil collection control. Oil depot interlock functions primarily include tank high and low level interlocks, combustible gas detection alarms and interlocks, ESD emergency shutdowns, and tank valve emergency shutoff interlocks. At present, the training and teaching of oil depot automatic control systems and interlocking mostly use on-site explanations, PPT, videos and other teaching methods. Due to the limitations of personnel professional knowledge, the training personnel have an unclear understanding of the operation and control principles of the automatic control system. At the same time, during the training process, because it is directly related to production, it is not easy to operate, which affects the safety of oil supply, resulting in poor training results. At the same time, the operators regularly inspect the automatic control system and test the interlocking system. However, during the interlocking test operation, the operators simply pay attention to whether the interlocking equipment is operating normally, and are not clear about the internal structure, specific control logic and operation principles of the automatic control system and interlocking. Once the interlocking equipment of the automatic control system fails, the operators do not master the control principles of the automatic control system and interlocking, and cannot find the cause of the failure in time and quickly, which seriously affects the safe and stable operation of equipment and facilities. At the same time, the operators' mastery of the relevant interlocking logic control relationship is also a key inspection item for the operating skills of the operators by the Emergency Management Bureau.

[0003] Therefore, how to provide a training system that helps operators master the control principles of automatic control systems and interlocking systems and find the causes of faults is an urgent problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides an automatic control and interlocking training system for an oil depot, aiming to solve the above technical problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An automatic control and interlocking training system for oil depots, comprising: a main control unit, an equipment monitoring unit, an equipment simulation unit, a working mode selection unit, an oil collection simulation unit, a refueling simulation unit, an oil pouring simulation unit, and a liquid level alarm simulation unit;

[0007] The main control unit is connected to the equipment monitoring unit, the working mode selection unit, the equipment simulation unit and the liquid level alarm simulation unit by signal; the working mode selection unit is connected to the oil collection system simulation unit, the refueling system simulation unit and the oil pouring system simulation unit by signal, and is used to select the working mode of the oil depot. The equipment simulation unit is used to simulate the oil depot equipment, and the main control unit is used to process and transmit data;

[0008] The equipment monitoring unit collects parameters of the equipment simulation unit, the oil collection simulation unit is used to control the equipment simulation unit to complete the oil collection process of the oil depot, the refueling simulation unit is used to control the equipment simulation unit to complete the oil discharge process of the oil depot, and the oil pouring system simulation unit is used to control the equipment simulation unit to complete the oil pouring process of the oil depot. The liquid level alarm simulation unit generates high and low liquid level alarm simulation signals based on user instructions and sends them to the equipment simulation unit to generate high and low liquid level alarms.

[0009] Furthermore, the equipment simulation unit is used to simulate an oil depot system, specifically including a plurality of oil tanks, each of which is provided with an oil receiving oil circuit, an oil filling oil circuit and an oil dumping oil circuit, and each oil circuit is provided with a manifold valve, an electro-hydraulic valve, an electric valve, an oil pump, a flow meter and a pressure gauge;

[0010] A combustible gas alarm is also provided, which is connected to a combustible gas controller. The combustible gas controller is interlocked with a ventilation device. When the combustible gas controller receives an alarm signal sent by the combustible gas alarm, the ventilation device is turned on.

[0011] Furthermore, the working mode selection simulation unit is used to switch between the oil collecting / refueling mode and the oil pouring mode. When the working mode is switched, the main pipe valve, the electro-hydraulic valve, and the electric valve of all oil circuits of the oil tank must be completely closed, and the oil pump must stop running. When the conditions are not met, a condition deficiency prompt is generated.

[0012] Furthermore, the oil collection simulation unit is used to control the equipment simulation unit to perform the oil collection process of the oil collection tank. The oil collection control includes the oil collection method and equipment control selection, alarm monitoring during oil collection, and oil collection liquid level over-high control. Specifically,

[0013] The oil collection mode includes manual mode and semi-automatic mode. The equipment control of the oil collection part is manual and semi-automatic mode for the main valve and electric valve;

[0014] The oil receiving alarm monitoring includes the oil receiving flow rate being lower than the set value and the oil receiving pressure being higher than the preset value. When the oil receiving flow rate is lower than the preset value, the alarm will be continuously triggered. When the oil receiving flow rate is higher than the preset value, the alarm will be automatically cancelled. When the oil receiving pressure is higher than the preset value, the alarm will be prompted that the oil receiving pressure is too high.

[0015] The oil receiving level over-high control is to alarm when the liquid level of the oil tank being collected exceeds the preset value, prompting the oil tank's current liquid level to reach the upper limit value. If in semi-automatic oil receiving mode, the tank change operation will be performed. If in manual mode, it will only prompt the oil tank's current liquid level to reach the upper limit value.

[0016] Furthermore, the refueling simulation unit is used to control the equipment simulation unit to perform the refueling process of the refueling tank, and the refueling process includes refueling process control and automatic tank replacement during refueling;

[0017] The refueling process is controlled manually or automatically.

[0018] Manual control includes manual control of the oil pump and manual control of the electro-hydraulic valve and electric valve. The conditions for manual start of the oil pump are: in the refueling / refueling mode, at least one electro-hydraulic valve and electric valve are open; the oil pump inlet pressure is not lower than the preset value; the current oil tank liquid level is at the preset ultra-low level; the ultra-low level tuning fork switch of the current oil tank is not actuated; there is no tank change action at the moment, and after the oil tank reaches the tank change level and the pump is stopped, the pump is not allowed to be started during the tank change process; the oil pump is not in maintenance mode and there is no oil pump fault signal;

[0019] Automatic control includes automatic control of the oil pump and automatic tank change after refueling.

[0020] Furthermore, the oil pouring simulation unit is used to control the equipment simulation unit to perform the oil pouring process of the refueling tank, and the oil pouring process is:

[0021] (1) Switch the electric valve to manual mode. If the electric valve is not closed, close all valves, switch the oil pump to manual mode, and stop all oil pumps;

[0022] (2) When all electric valves are closed and the oil pump is not running, switch to the oil pouring mode, and the corresponding mode status will display the current system status;

[0023] (3) Make sure that all the electric valves of the oil tanks are in the closed state, the oil pump is in the manual state and is not running, and the oil receiving main valve and the oil filling main valve are in the closed state;

[0024] (4) Open the outlet electric valve of the oil tank, open the inlet electric valve of the oil tank, open the electric valve of the oil main pipe, confirm that the above valves are fully open, start any refueling pump, adjust the frequency of the oil pump, and start pouring oil;

[0025] (5) Manually finish pouring oil, reduce the frequency of the oil pump and stop the pump, close the inlet electric valve of the oil receiving tank, close the outlet electric valve of the oil sending tank, close the electric valve of the oil pouring main pipe, and confirm that the above valves are completely closed;

[0026] (6) With all valves completely closed, except for the inlet and outlet valves, and the oil pump not running, switch to the collection / refueling mode;

[0027] (7) Switch the manual-automatic switch of the electric valve switch and the manual-automatic switch of the refueling pump to automatic mode;

[0028] (8) The oil pouring is completed.

[0029] Furthermore, the equipment monitoring unit is used to obtain the oil tank status, refueling queue, oil pump status, electro-hydraulic valve status, electric valve status, flow meter data, pressure gauge data, oil tank high and low liquid level data, and oil tank ultra-low liquid level tuning fork switch status.

[0030] Furthermore, the oil tank status includes waiting for collection, waiting for inspection, qualified, maintenance, refueling, and oil collection status; the change of the oil tank status can only be performed in the collection / refueling mode.

[0031] Furthermore, a human-computer interaction unit connected to the main control unit is provided, and the human-computer interaction unit is used to display the oil collecting process, the oil filling process, the oil pouring process and the interlocking action.

[0032] The above technical solution includes at least the following technical effects:

[0033] As can be seen from the above technical solutions, the present invention provides an automatic control and interlocking training system for oil depots. Compared to existing technologies, this system can demonstrate the automatic control system and interlocking actions and functions through on-site equipment, allowing operators to quickly master interlocking-related application knowledge. It can also serve as a necessary pre-job training program for new employees, enabling them to better and more quickly understand and master automatic control systems and interlocking knowledge, thereby enhancing training effectiveness and improving employee skills. Furthermore, the platform's functionality is easily expandable, allowing for the appropriate addition of additional interlocking functions to improve safety management. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0035] Figure 1The diagram is a structural diagram of an automatic control and interlocking training system for an oil depot according to the present invention.

[0036] Figure 2 The figure is a schematic diagram of a refueling process of the present invention.

[0037] Figure 3 The figure is a schematic diagram of an oil collection process of the present invention.

[0038] Figure 4 This is a schematic diagram of a combustible gas interlock structure of the present invention. DETAILED DESCRIPTION

[0039] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0040] See attached Figure 1-4 The embodiment of the present invention discloses an automatic control and interlocking training system for an oil depot, comprising: a main control unit, an equipment monitoring unit, an equipment simulation unit, a working mode selection unit, an oil collection simulation unit, a refueling simulation unit, an oil pouring simulation unit, and a liquid level alarm simulation unit;

[0041] The main control unit is connected to the equipment monitoring unit, the working mode selection unit, the equipment simulation unit, and the liquid level alarm simulation unit by signal. The working mode selection unit is connected to the oil collection system simulation unit, the oil filling system simulation unit, and the oil pouring system simulation unit by signal. It is used to select the working mode of the oil depot. The equipment simulation unit is used to simulate the oil depot equipment. The main control unit is used to process and transmit data.

[0042] The equipment monitoring unit collects the parameters of the equipment simulation unit. The oil collection simulation unit is used to control the equipment simulation unit to complete the oil collection process of the oil depot. The refueling simulation unit is used to control the equipment simulation unit to complete the oil discharge process of the oil depot. The oil pouring system simulation unit is used to control the equipment simulation unit to complete the oil pouring process of the oil depot. The liquid level alarm simulation unit generates high and low liquid level alarm simulation signals based on user instructions and sends them to the equipment simulation unit to generate high and low liquid level alarms.

[0043] To further optimize the above technical solution, the equipment simulation unit is used to simulate the oil depot system, which specifically includes multiple oil tanks. The oil tanks are equipped with oil collection lines, oil filling lines and oil discharge lines. Each oil line is equipped with a main valve, electro-hydraulic valve, electric valve, oil pump, flow meter and pressure gauge.

[0044] A combustible gas alarm is also provided, which is connected to the combustible gas controller. The combustible gas controller is interlocked with a ventilation device. When the combustible gas controller receives the alarm signal sent by the combustible gas alarm, the ventilation device is turned on.

[0045] In order to further optimize the above technical solution, the working mode selection simulation unit is used to switch between the oil collection / refueling mode and the oil pouring mode. When the working mode is switched, the main pipe valves, electro-hydraulic valves, and electric valves of all oil circuits of the oil tank must be completely closed, and the oil pump must stop running. When the conditions are not met, a conditional deficiency prompt will be generated.

[0046] In order to further optimize the above technical solution, the oil collection simulation unit is used to control the equipment simulation unit to perform the oil collection process of the oil collection tank. The oil collection control includes the oil collection method and equipment control selection, alarm monitoring during oil collection, and oil collection level over-high control. Specifically,

[0047] The oil collection mode includes manual mode and semi-automatic mode. The equipment control of the oil collection part is manual and semi-automatic mode for the main valve and electric valve;

[0048] The oil receiving alarm monitoring includes the oil receiving flow rate being lower than the set value and the oil receiving pressure being higher than the preset value. When the oil receiving flow rate is lower than the preset value, the alarm will be continuously triggered. When the oil receiving flow rate is higher than the preset value, the alarm will be automatically cancelled. When the oil receiving pressure is higher than the preset value, the alarm will be prompted that the oil receiving pressure is too high.

[0049] The oil receiving level over-high control is to alarm when the liquid level of the oil tank being collected exceeds the preset value, prompting the oil tank's current liquid level to reach the upper limit value. If in semi-automatic oil receiving mode, the tank change operation will be performed. If in manual mode, it will only prompt the oil tank's current liquid level to reach the upper limit value.

[0050] To further optimize the above technical solution, the refueling simulation unit is used to control the equipment simulation unit to perform the refueling process of the refueling tank, which includes refueling process control and automatic tank replacement;

[0051] The refueling process is controlled manually or automatically.

[0052] Manual control includes manual control of the oil pump and manual control of the electro-hydraulic valve and electric valve. The conditions for manual start of the oil pump are: in the refueling / refueling mode, at least one electro-hydraulic valve and electric valve are open; the oil pump inlet pressure is not lower than the preset value; the current oil tank liquid level is at the preset ultra-low level; the ultra-low level tuning fork switch of the current oil tank is not actuated; there is no tank change action at the moment, and after the oil tank reaches the tank change level and the pump is stopped, the pump is not allowed to be started during the tank change process; the oil pump is not in maintenance mode and there is no oil pump fault signal;

[0053] Automatic control includes automatic control of the oil pump and automatic tank change after refueling.

[0054] In order to further optimize the above technical solution, the oil pouring simulation unit is used to control the equipment simulation unit to perform the oil pouring process of the refueling tank. The oil pouring process is as follows:

[0055] (1) Switch the electric valve to manual mode. If the electric valve is not closed, close all valves, switch the oil pump to manual mode, and stop all oil pumps;

[0056] (2) When all electric valves are closed and the oil pump is not running, switch to the oil pouring mode, and the corresponding mode status will display the current system status;

[0057] (3) Make sure that all the electric valves of the oil tanks are in the closed state, the oil pump is in the manual state and is not running, and the oil receiving main valve and the oil filling main valve are in the closed state;

[0058] (4) Open the outlet electric valve of the oil tank, open the inlet electric valve of the oil tank, open the electric valve of the oil main pipe, confirm that the above valves are fully open, start any refueling pump, adjust the frequency of the oil pump, and start pouring oil;

[0059] (5) Manually finish pouring oil, reduce the frequency of the oil pump and stop the pump, close the inlet electric valve of the oil receiving tank, close the outlet electric valve of the oil sending tank, close the electric valve of the oil pouring main pipe, and confirm that the above valves are completely closed;

[0060] (6) With all valves completely closed, except for the inlet and outlet valves, and the oil pump not running, switch to the collection / refueling mode;

[0061] (7) Switch the manual-automatic switch of the electric valve switch and the manual-automatic switch of the refueling pump to automatic mode;

[0062] (8) The oil pouring is completed.

[0063] To further optimize the above technical solution, the equipment monitoring unit is used to obtain the oil tank status, refueling queue, oil pump status, electro-hydraulic valve status, electric valve status, flow meter data, pressure gauge data, oil tank high and low liquid level data, and oil tank ultra-low liquid level tuning fork switch status.

[0064] To further optimize the above technical solution, the oil tank status includes waiting for collection, waiting for inspection, qualified, maintenance, refueling, and oil collection status; the change of oil tank status can only be performed in the collection / refueling mode.

[0065] In order to further optimize the above technical solution, a human-computer interaction unit connected to the main control unit is also provided, and the human-computer interaction unit is used to display the oil collection process, the oil filling process, the oil pouring process and the interlocking action.

[0066] Figure 2The figure shows a schematic diagram of the refueling process. Refueling control targets are divided into two types: fuel pump control and fuel tank outlet valve control. Fuel pump control has automatic and manual modes; valve control also has manual and automatic modes. Manually controlled valves include the oil delivery manifold valve, oil return manifold valve, oil return manifold valve, and the inlet and outlet valves of the fuel pump motor. Manually controlled valves do not participate in automatic control, but their operation is subject to conditional constraints. Automatically controlled valves only participate in automatic control when the manual / automatic switch is in the automatic position. Under manual control, the user will be prompted to open and close the outlet valve during the automatic refueling process.

[0067] Manual control of the pump

[0068] Manual control of the pump means that the operator controls the start and stop of the pump. In the manual state, the frequency of the oil pump can be given by the operator or automatically given by the system according to the pressure. In the manual state, the oil pump will not stop by itself. In the manual state, when the frequency is automatically given, the operating frequency of the oil pump may be very high or very low to the limit of 10-50hz. The start of the pump is also controlled by the pump enabling conditions. The enabling conditions of the oil pump can be added as required.

[0069] Pump starting conditions:

[0070] 1: In the refueling / refilling mode, at least one outlet valve is fully opened;

[0071] 2: The pump inlet pressure is not lower than the user set value (vacuum pressure sensor is required);

[0072] 3: The current liquid level of the oil tank is at the ultra-low level set by the user;

[0073] 4: The ultra-low liquid level tuning fork switch of the current oil tank does not work;

[0074] 5: There is no tank change action at present. When the oil tank reaches the tank change level, the pump is stopped and the pump is not allowed to start during the tank change process;

[0075] 6: The oil pump control cabinet panel is not in maintenance mode and there is no fault signal on the oil pump;

[0076] When any of the above conditions is met, the fuel pump will stop and cannot be started even manually.

[0077] Remote manual control of tank outlet valve:

[0078] In manual mode, the valve of the tank is controlled by the operator.

[0079] If the valve is in automatic mode, you can switch it to manual mode and then manually operate the valve.

[0080] Restrictions on manual operation of outlet valves:

[0081] 1: In the receiving / refueling mode, the outlet valve can only be opened on the oil tank in the oil delivery area;

[0082] 2: In the collecting / refueling mode, only one outlet valve of the 1#--6# oil tank is allowed to be opened. If one outlet valve is fully opened, the other valves cannot be operated.

[0083] In addition, the valve can only be operated through the human-machine interaction unit when the valve is in remote control state. Whether it is in remote state can be obtained through the valve status feedback display. In remote state, R is displayed, and in local state, L is displayed.

[0084] The start and stop control of the pump is based on the system pressure and flow control:

[0085] When the system pressure is lower than the set minimum pump starting pressure value, 1# (2#) starts. When the flow exceeds the set flow, 3# (4#) pump is started. When the system flow continues to increase to the set value, the standby 2# (1#) pump that is not running on that day is started.

[0086] When the flow rate decreases and decreases to the flow rate at which the standby pump can be stopped, the 2# (1#) standby pump will be stopped and not run on that day. When the flow rate continues to decrease and decreases to the flow rate set for the shutdown of the maximum flow rate, the 3# (4#) pump will be stopped.

[0087] When the flow rate continues to decrease and reaches the shutdown flow rate, the judgment is delayed and the shutdown pressure holding time is run. It is judged again whether the flow rate is less than the shutdown flow rate. If it is less than the shutdown flow rate, the pressure is within the normal range and the pump stops.

[0088] In another case, if the flow rate is less than the shutdown flow rate, when the pump's operating frequency is lower than a certain low value, in order to prevent the oil pump motor from running at an ultra-low frequency, the pump will stop running even if the delay time is not reached.

[0089] The process of automatic tank replacement during refueling is as follows:

[0090] Real-time monitoring of the oil tank liquid level →→The liquid level is at the normal set value →→Continue to monitor the liquid level (wait);

[0091] Real-time monitoring of the oil tank level →→ the level reaches the user-set low level tank change value →→ monitoring whether the oil pump motor is running →→ the oil pump motor is running (waiting) →→ prompting the user that the level has reached the tank change level;

[0092] The oil pump motor is running (waiting) →→ the liquid level reaches the user-set lower limit →→ the pump is forced to stop →→ the user is prompted to change the tank;

[0093] The oil pump motor is running (waiting) →→ The oil pump motor stops running →→ Close the outlet valve of the oil tank in the oil delivery area / prohibit the oil pump from running →→ The current oil delivery tank is moved out of the oil delivery area →→ The tank status changes →→ Queue processing (add the oil tank at the head of the queue to the oil delivery area) →→ The current oil delivery tank mode is manual (prompts the user to open the outlet valve) / The current oil delivery tank mode is automatic (the system automatically opens the outlet valve of the tank).

[0094] The monitoring data includes the total running time of the oil pump; the current running time of the oil pump; the total number of oil pump operations; the operating current of the oil pump; the operating status of the oil pump cooling fan; the current refueling pressure; the current refueling flow; the oil pump outlet pressure; the oil pump outlet filter pressure difference; and the oil tank liquid level.

[0095] like Figure 3 The figure shows the oil collection process. The oil can only be collected if the following conditions are met:

[0096] 1: Oil can only be collected (and equipment related to oil collection operated) under the premise of operation by operating personnel.

[0097] 2: Open the oil receiving main valve to the full position, and close the oil drain main valve to the full position.

[0098] 3: Oil tanks that are being shipped or under maintenance cannot receive oil. Oil tanks in other states (qualified (not in the refueling queue), waiting for inspection, waiting for receipt) can be switched to the oil receiving state in the receiving / refueling mode (automatically switched when the inlet valve is fully opened).

[0099] 4: You can only collect fuel in the collecting / refueling mode. In the pouring mode, you are prohibited from collecting fuel.

[0100] The manual / semi-automatic mode of the oil collection part is selected by the oil collection mode selection switch.

[0101] The oil recovery system has manual and semi-automatic functions. The manual and semi-automatic switches control the manual and automatic modes of the inlet valves and the oil recovery manifold valves for tanks 1#-6#. The oil recovery alarm monitor has two types of alarms: one for when the oil recovery flow rate falls below a set value, and the other for when the oil recovery pressure rises above a set value. During the oil recovery process, the system monitors the oil recovery flow rate in real time. When the flow rate falls below the set value, the system issues a continuous alarm. When the flow rate rises above the set value, the system automatically cancels the alarm. The system monitors the oil recovery system pressure at all times. When the pressure rises above the set value, a voice alarm indicates that the pressure is too high. During the initial oil recovery phase, the audible alarm can be turned off due to low oil recovery flow. With the audible alarm turned off, the system will not issue an alarm even if the flow rate is low. Therefore, the audible alarm should be turned on once the oil recovery is normal.

[0102] When the liquid level in the tank currently receiving oil exceeds the user-set high value, the system will alarm, indicating that the current tank level has reached the upper limit. If in semi-automatic oil collection mode, the system will perform a tank change operation. In manual mode, the system will indicate that the current tank level is close to the alarm level. If the liquid level rises further, reaching the high-high level or the high-level tuning fork level switch is triggered, the system will forcibly open the inlet valve of the tank currently receiving oil. When the inlet valve opens to the user-set opening, the inlet valve of the tank currently receiving oil will close. At the same time, the system will issue a high-high level alarm.

[0103] Specific steps for collecting oil:

[0104] Confirm that you are in the collecting / refueling mode →→Open the oil collecting control window →→Select the oil tanks to be collected (multiple selections are allowed) →→After confirming to start collecting oil, click Start collecting oil →→Open the inlet valve of the corresponding tank / open the oil collecting main valve →→Start collecting oil →→The first oil collecting tank is full (collect oil to the set high liquid level) →→Alarm prompts and the inlet valve of the second oil collecting tank is opened at the same time →→The inlet valve of the second oil collecting tank is fully opened →→Close the inlet valve of the first oil collecting tank →→The inlet valve of the first oil collecting tank is fully closed →→The first inlet tank is switched to the waiting state →→The first oil collecting tank is finished

[0105] The second oil receiving tank is fully opened →→ The second oil receiving tank starts to collect oil →→ The second oil receiving tank collects oil to the high alarm level →→ Alarm prompt →→ Automatically switch to the third oil receiving tank →→ Close the inlet valve of the second oil receiving tank (after the inlet valve of the third oil receiving tank is fully opened) →→ Close the inlet valve of the second oil receiving tank →→ The status of the second oil receiving tank changes to the waiting state →→ The second oil receiving tank finishes collecting oil

[0106] The third oil receiving tank starts collecting oil →→Open the inlet valve of the third oil receiving tank →→The third oil receiving tank starts collecting oil →→When the flow rate is less than the set judgment oil collection flow rate →→Delay 5s to confirm →→Prompt the user to confirm the end of oil collection →→The user manually confirms the end of oil collection.

[0107] The oil pouring process is:

[0108] 1: Find the manual-automatic switch of the electric valve in the user setting window of the human-machine interface unit. Switch the electric valve to manual mode. If any valve is not fully closed, close all valves to the fully closed state. Find the manual-automatic switch of the fuel pump in the refueling interface, switch the pump to manual mode, and stop the operation of all fuel pumps.

[0109] 2: Find the system mode switch under the mode switch on the main interface, click the oil pouring mode switch button, the system will prompt whether to confirm, click the confirmation button, all valves (except the pump inlet and outlet valves) are closed, the pump is not running, the system will switch to the oil pouring mode, and the corresponding mode status will display the current system status;

[0110] 3: Make sure all oil tank valves are closed, and make sure the oil pump motor is in manual mode and not running. Make sure the oil receiving main valve and the oil filling main valve are closed;

[0111] 4: Open the outlet valve of the oil tank (oil delivery tank) →→ open the inlet valve of the oil tank (oil receiving tank) →→ open the oil main valve →→ confirm that the above valves are fully opened →→ start any one of the oil pumps (1-4#) →→ adjust the frequency of the oil pump →→ start pouring oil;

[0112] 5: Manually end oil pouring →→ reduce the pump frequency and stop the pump →→ close the inlet valve of the oil pouring tank (oil receiving tank) →→ close the outlet valve of the oil pouring tank (oil distributing tank) →→ close the oil pouring main valve →→ confirm that the above valves are closed in place;

[0113] 6: Find the system mode switch under the mode switch on the main interface, click the collection / refueling mode switch button, the system will prompt whether to confirm, click the confirmation button, all valves (except the pump inlet and outlet valves) are closed, and the pump is not running, the system will switch to the collection / refueling mode;

[0114] 7: Switch the manual-automatic switch of the electric valve switch and the manual-automatic switch of the fuel pump to automatic mode;

[0115] 8: Finish pouring oil.

[0116] Tank status includes: waiting for collection, awaiting inspection, qualified, maintenance, refueling, and oil collection. Tank status changes can be made in two ways: manual by an operator and automatic. Tank status changes can only be made in the collection / refueling mode; the tank status cannot be changed in the oil dumping mode.

[0117] Pending status

[0118] The waiting state can be changed by the operator or automatically by the system. In the waiting state, the outlet valve of the oil tank is not allowed to be opened, but the inlet valve can be opened. In the waiting state, the inlet and outlet valves of the oil tank are both in the closed position.

[0119] Oil collection status

[0120] The oil collecting state means that the inlet valve of the oil tank is open and the oil tank is collecting oil.

[0121] In the oil collection state, the inlet valve can only be closed by the operator or automatically by the system (when the liquid level reaches the upper limit), and the outlet valve cannot be opened. After the valve is closed (the valve is fully closed), the tank state automatically changes to the waiting state.

[0122] The operator can change the status from qualified, waiting for inspection, to receiving to oil receiving status.

[0123] In the oil collection state, the inlet valve of the tank is fully opened and the outlet valve is fully closed.

[0124] Waiting for inspection status

[0125] The waiting state can be changed by the operator or automatically by the system. In the waiting state, the inlet and outlet valves of the oil tank are not allowed to be opened.

[0126] When the inlet valve is fully closed, if the system is in the collection / refueling mode and the current tank is in the collection state, the system will change the state of the tank to the waiting state.

[0127] When the inlet and outlet valves are closed, and the tank is in the waiting state, waiting for inspection, or qualified state, the tank can be manually changed to the waiting state.

[0128] In the inspection state, the tank's inlet valve and outlet valve are fully closed.

[0129] Qualified status

[0130] Changes to the qualified status can only be made by specific operators.

[0131] Only qualified oil tanks are allowed to deliver oil. For oil tanks in other states, the outlet valve is prohibited from opening in the receiving / refueling mode.

[0132] Qualified tanks can be transferred to other states by the operator. Once a qualified tank is transferred to other states, it must be inspected and qualified by a specific operator before it can be transferred to the qualified state.

[0133] In the qualified state, the inlet valve of the tank is closed in place and the outlet valve is closed in place.

[0134] Oily hair condition

[0135] When the outlet valve of the tank in the oil delivery state is closed, the state of the tank is converted to the waiting state.

[0136] In other cases, the tank status returns to qualified status and can continue to deliver oil.

[0137] The oil delivery status cannot be changed by the operator through the status change box, but can be changed by the operator manually opening the outlet valve to the open position. When the outlet valve of a qualified tank is opened to the open position, the tank is in the oil delivery status.

[0138] In the oil delivery state, the inlet valve is fully closed and the outlet valve is fully opened

[0139] Maintenance status

[0140] The change of maintenance status can only be made by the operator. The tank in the oil delivery state and the oil receiving state cannot be changed to the maintenance state. The operator can manually close the inlet valve of the tank that is receiving oil to change the tank to the waiting state, and then change from waiting state to maintenance state.

[0141] For a tank that is discharging oil, the operator can manually close the outlet valve to change the tank to a qualified state, and then change the qualified state to an inspection state.

[0142] After the qualified oil tank is changed to overhaul, it must be inspected and qualified by a specific operator before it can be converted to qualified status.

[0143] In the maintenance state, any operation of the tank valve is prohibited, but the valve can be manually operated by an administrator with super authority after turning on the override switch.

[0144] The oil pump control cabinet feeds back fault signals to the DCS. Each control cabinet (1#-4#) feeds back two signals to the DCS: a soft starter fault signal and an inverter fault signal. When a fault signal is detected in the soft starter or inverter, it is fed back to the DCS, and the control cabinet will disable the inverter and soft starter in that control cabinet.

[0145] When the current fault time exceeds a certain time (12S), the fault will be locked.

[0146] Another type of fault is determined by the system. The system determines whether a fault exists based on the operating signal fed back by the control cabinet and the start signal given by the DCS cabinet. The following is an example.

[0147] If the DCS cabinet sends a start signal but the control cabinet does not feed back an operating signal to the DCS; or if the DCS cabinet does not send a start signal but the control cabinet actually feeds back an operating signal, the system will determine it as a fault. At the same time, if the current fault time exceeds a certain time (12S), the fault will be locked.

[0148] There are three types of on-site electric valves, and the feedback fault signals are the same. There are two types of valve feedback fault signals, one is the valve opening / closing over-torque fault, and the other is a comprehensive fault.

[0149] The fault description of the feedback is different depending on the type of electric valve.

[0150] In the valve control window, three types of faults are displayed

[0151] 1: Fault ----- This fault is an over-torque fault

[0152] 2: Timeout - the valve opening / closing time exceeds the system set valve opening / closing time. This fault is determined by the software.

[0153] 3: Comprehensive fault ----- reflects the comprehensive fault of the electric valve body. According to the type of valve, the settings are divided as follows;

[0154] Rotork electric valve ----- valve power supply single-phase or multi-phase power failure, valve actuator motor overheating, valve control circuit failure; Tianjin Aikote electric valve ----- valve power supply single-phase or multi-phase power failure, valve actuator motor overheating, valve stuck, over-torque failure; Jiangsu electric valve ----- valve power supply single-phase or multi-phase power failure, valve actuator motor overheating, valve stuck, over-torque failure

[0155] Troubleshooting of valve failure:

[0156] When a valve fault is detected on the PC, the valve action will not be executed. The valve can only be operated after the valve fault is eliminated.

[0157] The system software monitors valve opening and closing times. If an open / close command is issued within the specified time, but the valve does not open or close, or the valve is not fully opened or closed, the system will report a timeout fault and lock the fault. Once locked, the fault can only be cleared by pressing the valve reset button. If the fault is not cleared, it will lock again.

[0158] Therefore, after the valve returns a fault signal, it is necessary to check the fault and eliminate it. Otherwise, the fault will reappear even after resetting the fault.

[0159] Release after fault locking:

[0160] When the control cabinet fault signal is locked, the control cabinet cannot be started automatically or manually, and the fault must be reset. After the reset, the fault signal will be released. If a hardware fault exists or the feedback signal is abnormal, the system will re-lock the fault after a certain period of time, and the fault must be checked on site.

[0161] This application implements the following functions:

[0162] (1) Oil tank high and low liquid level interlock

[0163] Real-time simulation of high-high and low-low tank level alarm signals enables interlocking of high-high / low-low tank level alarms with the tank inlet and outlet electric valves. During oil supply, low levels trigger the automatic control system to stop the oil delivery pump. During oil collection, high levels trigger the automatic control system to stop the oil collection pump and close the oil collection tank inlet electric valve.

[0164] (2) Apron pipeline refueling control

[0165] Under the automatic control state, the pressure signal of the apron refueling main is collected (simulated by a signal generator), and the constant pressure control of the oil pump frequency conversion is performed according to the deviation between the set pressure value and the actual pressure value. With reference to the oil pump outlet flow signal (simulated by a signal generator), the oil pump is started and stopped at the working frequency to ensure the constant pressure of the refueling pipeline at all times.

[0166] (3) ESD emergency stop: Press the corresponding emergency stop button to stop the apron pipeline refueling pump (pipeline oil collection pump) from running.

[0167] (4) Combustible gas detection alarm and interlocking: After the combustible gas alarm in the pump room area, the fan will be interlocked and operated.

[0168] (5) Emergency shut-off of oil tank valves: Press the emergency shut-off button of the oil tank inlet valve to stop the oil tank receiving pump and close the inlet electro-hydraulic valve; press the emergency shut-off button of the oil tank outlet valve to stop the oil tank sending pump and close the outlet electro-hydraulic valve; trigger the high-high liquid level alarm of the oil tank, interlock the oil receiving pump to stop the pump, and close the oil tank inlet electro-hydraulic valve; trigger the low-low liquid level alarm of the oil tank, interlock the sending pump to stop the pump, and close the oil tank outlet electro-hydraulic valve;

[0169] (6) Real-time monitoring of oil pump start / stop, pipeline pressure, flow and other status signals, electric valve status display, interlocking device status signals, etc. Operators can intuitively understand the control logic of the automatic control system and interlocking control and the control principles of each interlocking device through the touch screen monitoring interface.

[0170] An automatic control and interlocking training system for oil depots designed according to the present invention can enable operators to quickly master interlocking-related application knowledge through actual demonstration of the automatic control system and interlocking actions and functions by on-site equipment. It can also serve as a necessary training program for new employees before they take up their posts, enabling new employees to better and faster understand and master the automatic control system and interlocking knowledge, enhance the training effect, and improve the employees' business skills. At the same time, the platform functions are easy to expand, and other interlocking functions can be appropriately added to improve the level of safety management.

[0171] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0172] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic control and interlocking training system for oil depots, characterized by: include: Main control unit, equipment monitoring unit, equipment simulation unit, working mode selection unit, oil collection simulation unit, oil filling simulation unit, oil pouring simulation unit, liquid level alarm simulation unit; The main control unit is connected to the equipment monitoring unit, the working mode selection unit, the equipment simulation unit and the liquid level alarm simulation unit by signal; the working mode selection unit is connected to the oil collection system simulation unit, the refueling system simulation unit and the oil pouring system simulation unit by signal, and is used to select the working mode of the oil depot. The equipment simulation unit is used to simulate the oil depot equipment, and the main control unit is used to process and transmit data; The equipment monitoring unit collects parameters of the equipment simulation unit, the oil collection simulation unit is used to control the equipment simulation unit to complete the oil collection process of the oil depot, the refueling simulation unit is used to control the equipment simulation unit to complete the oil discharge process of the oil depot, and the oil pouring system simulation unit is used to control the equipment simulation unit to complete the oil pouring process of the oil depot. The liquid level alarm simulation unit generates high and low liquid level alarm simulation signals based on user instructions and sends them to the equipment simulation unit to generate high and low liquid level alarms.

2. The automatic control and interlocking training system for oil depot according to claim 1 is characterized in that: The equipment simulation unit is used to simulate the oil depot system, specifically including multiple oil tanks, each of which is provided with an oil receiving oil circuit, an oil filling oil circuit and an oil dumping oil circuit, and each oil circuit is provided with a main valve, an electro-hydraulic valve, an electric valve, an oil pump, a flow meter and a pressure gauge; A combustible gas alarm is also provided, which is connected to a combustible gas controller. The combustible gas controller is interlocked with a ventilation device. When the combustible gas controller receives an alarm signal sent by the combustible gas alarm, the ventilation device is turned on.

3. The automatic control and interlocking training system for oil depot according to claim 2 is characterized in that: The working mode selection simulation unit is used to switch between the oil collecting / refueling mode and the oil pouring mode. When the working mode is switched, the main pipe valve, the electro-hydraulic valve, and the electric valve of all oil circuits of the oil tank must be completely closed, and the oil pump must stop running. When the conditions are not met, a condition deficiency prompt is generated.

4. The automatic control and interlocking training system for oil depot according to claim 2 is characterized in that: The oil collection simulation unit is used to control the equipment simulation unit to perform the oil collection process of the oil collection tank. The oil collection control includes the oil collection method and equipment control selection, alarm monitoring during oil collection, and oil collection level over-high control. Specifically, The oil collection mode includes manual mode and semi-automatic mode. The equipment control of the oil collection part is manual and semi-automatic mode for the main valve and electric valve; The oil receiving alarm monitoring includes the oil receiving flow rate being lower than the set value and the oil receiving pressure being higher than the preset value. When the oil receiving flow rate is lower than the preset value, the alarm will be continuously triggered. When the oil receiving flow rate is higher than the preset value, the alarm will be automatically cancelled. When the oil receiving pressure is higher than the preset value, the alarm will be prompted that the oil receiving pressure is too high. The oil receiving level over-high control is to alarm when the liquid level of the oil tank being collected exceeds the preset value, prompting the oil tank's current liquid level to reach the upper limit value. If in semi-automatic oil receiving mode, the tank change operation will be performed. If in manual mode, it will only prompt the oil tank's current liquid level to reach the upper limit value.

5. The automatic control and interlocking training system for oil depot according to claim 2 is characterized in that: The refueling simulation unit is used to control the equipment simulation unit to perform the refueling process of the refueling tank, and the refueling process includes refueling process control and automatic tank replacement; The refueling process is controlled manually or automatically. Manual control includes manual control of the oil pump and manual control of the electro-hydraulic valve and electric valve. The conditions for manual start of the oil pump are: in the refueling / refueling mode, at least one electro-hydraulic valve and electric valve are open; the oil pump inlet pressure is not lower than the preset value; the current oil tank liquid level is at the preset ultra-low level; the ultra-low level tuning fork switch of the current oil tank is not actuated; there is no tank change action at the moment, and after the oil tank reaches the tank change level and the pump is stopped, the pump is not allowed to be started during the tank change process; the oil pump is not in maintenance mode and there is no oil pump fault signal; Automatic control includes automatic control of the oil pump and automatic tank change after refueling.

6. The automatic control and interlocking training system for oil depot according to claim 2 is characterized in that: The oil pouring simulation unit is used to control the equipment simulation unit to perform the oil pouring process of the refueling tank. The oil pouring process is: (1) Switch the electric valve to manual mode. If the electric valve is not closed, close all valves, switch the oil pump to manual mode, and stop all oil pumps; (2) When all electric valves are closed and the oil pump is not running, switch to the oil pouring mode, and the corresponding mode status will display the current system status; (3) Make sure that all the electric valves of the oil tanks are in the closed state, the oil pump is in the manual state and is not running, and the oil receiving main valve and the oil filling main valve are in the closed state; (4) Open the outlet electric valve of the oil tank, open the inlet electric valve of the oil tank, open the electric valve of the oil main pipe, confirm that the above valves are fully open, start any refueling pump, adjust the frequency of the oil pump, and start pouring oil; (5) Manually finish pouring oil, reduce the frequency of the oil pump and stop the pump, close the inlet electric valve of the oil receiving tank, close the outlet electric valve of the oil sending tank, close the electric valve of the oil pouring main pipe, and confirm that the above valves are completely closed; (6) With all valves completely closed, except for the inlet and outlet valves, and the oil pump not running, switch to the collection / refueling mode; (7) Switch the manual-automatic switch of the electric valve switch and the manual-automatic switch of the refueling pump to automatic mode; (8) The oil pouring is completed.

7. The automatic control and interlocking training system for oil depot according to claim 2 is characterized in that: The equipment monitoring unit is used to obtain the oil tank status, refueling queue, oil pump status, electro-hydraulic valve status, electric valve status, flow meter data, pressure gauge data, oil tank high and low liquid level data, and oil tank ultra-low liquid level tuning fork switch status.

8. The automatic control and interlocking training system for oil depot according to claim 7 is characterized in that: The oil tank status includes waiting for collection, waiting for inspection, qualified, maintenance, refueling and oil collection; the change of oil tank status can only be performed in the collection / refueling mode.

9. The automatic control and interlocking training system for oil depot according to claim 2 is characterized in that: A human-computer interaction unit connected to the main control unit is also provided, and the human-computer interaction unit is used to display the oil collecting process, the oil filling process, the oil pouring process and the interlocking action.

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