False opening prevention structure of oil distribution regulating valve

Abstract

The utility model discloses a mistaken opening prevention structure for an oil distribution regulating valve, which comprises a crude oil barrel, five stirring barrels, a header pipe communicated with the crude oil barrel, a shunt pipe arranged between the header pipe and the five stirring barrels, a manual valve arranged on the shunt pipe, and an oil well pump arranged on the header pipe, a variable-frequency controller is arranged on one side of the oil well pump, a flow sensor is arranged on each flow dividing pipe, and the variable-frequency controller and the flow sensors are connected with the central controller through electric signals. When the central controller receives flowing signals of the two flow sensors at the same time, the variable frequency controller is controlled to close the oil well pump. The device can realize emergency stop of oil agent stirring work due to misoperation during crude oil conveying, and is used for reducing loss caused by the misoperation.

Description

Technical Field

[0001] This utility model relates to the technical field of polyester filament production equipment, specifically to a structure for preventing accidental opening of an oil distribution regulating valve. Background Technology

[0002] Currently, the oil preparation section of the spinning workshop involves adjusting the concentration of the oil agent. The principle is to use an oil pump to transport highly concentrated crude oil through pipelines to a mixing tank. Then, deionized water is added, and the mixing motor is activated to stir the mixture until it reaches a balanced state, thus achieving the purpose of adjusting the oil agent concentration. At present, due to space limitations, five mixing tanks share one oil agent delivery system. This system consists of one oil pump motor, one oil pump, one main pipe, five valves, and five branch pipes. The system of five mixing tanks sharing a single oil delivery device has a significant drawback. During operation, a situation arises where, while the device is supplying oil to an empty tank, a brief absence or replacement by the operator can lead to an error. Upon return, the operator may mistakenly open the wrong valve, resulting in high-concentration crude oil being delivered into the already mixed tank. This imbalance in oil concentration can lead to the spoilage of the oil and significant losses. Furthermore, valves that should be closed may fail to close in time, causing over-supply. Therefore, a device capable of emergency shutdown during oil mixing is needed to mitigate this issue. Summary of the Invention

[0003] In order to solve one or more technical problems existing in the prior art, the purpose of this application is to provide an oil distribution regulating valve anti-misoperation structure, which can realize the device to stop the oil mixing operation in case of operation error during crude oil transportation, so as to reduce the loss caused by the error.

[0004] To address the aforementioned technical problems, the objective of this application is achieved through the following technical solution:

[0005] An oil distribution regulating valve anti-accidental opening structure includes an oil tank, five mixing tanks, a main pipe connected to the oil tank, a branch pipe between the main pipe and the five mixing tanks, a manual valve on the branch pipe, and an oil pump on the main pipe. A frequency converter is provided on one side of the oil pump, and a flow sensor is provided on each branch pipe. The system also includes a central controller. The frequency converter and each of the flow sensors are connected to the central controller via electrical signals. When the central controller receives flow signals from two of the flow sensors simultaneously, it controls the frequency converter to shut down the oil pump.

[0006] Preferably, the central controller uses a PLC or microcontroller as its control core.

[0007] Preferably, the flow sensor is a clamp-on flow meter.

[0008] Preferably, the central controller includes an alarm.

[0009] Preferably, the alarm is an audible and visual alarm, which includes a buzzer and an LED indicator.

[0010] Preferably, the alarm also includes an alarm light, with an alarm light provided on one side of each of the manual switches.

[0011] Preferably, the shutdown signal sent by the central controller to the frequency converter is after the alarm has been continuously blaring for 20 to 45 seconds.

[0012] Preferably, the frequency converter uses a relay or contactor to control the power supply to the oil pump.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] By adding a combination of frequency converter, flow sensor and central controller, the problem of high-concentration crude oil being re-transported into already stirred oil due to incorrect valve opening caused by operational errors can be solved, thus preventing oil waste and full oil drums, and better ensuring the stable transportation of crude oil and oil. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] In the diagram: 1. Mixing tank; 2. Diverter pipe; 3. Manual valve; 4. Flow sensor; 5. Alarm light; 6. Main pipe; 7. Oil pump; 8. Variable frequency controller; 9. Crude oil tank; 10. Central controller; 11. Alarm. Detailed Implementation

[0017] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0018] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0019] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] like Figure 1 As shown, an oil distribution regulating valve anti-accidental opening structure includes an oil tank 9, five mixing tanks 1, a main pipe 6 connected to the oil tank 9, a branch pipe 2 located between the main pipe 6 and the five mixing tanks 1, a manual valve 3 located on the branch pipe 2, and an oil pump 7 located on the main pipe 6. A frequency converter 8 is provided on one side of the oil pump 7. A flow sensor 4 is provided on each branch pipe 2. The system also includes a central controller 10. The frequency converter 8 and each of the flow sensors 4 are connected to the central controller 10 via electrical signals. When the central controller 10 receives flow signals from two of the flow sensors 4 simultaneously, it controls the frequency converter 8 to shut down the oil pump 7.

[0021] In actual operation, when oil supply is not required, the oil pump 7 and the five manual valves 3 are all closed. When one of the mixing tanks 1 needs to be re-mixed with oil, the oil pump 7 and the corresponding manual valve 3 are opened, allowing crude oil to flow into the mixing tank 1 for mixing. During this process, the flow sensor 4 on the crude oil distribution pipe 2 sends a flow signal to the central controller 10 in real time, forming a feedback signal "1", while the other flow sensors 4 are in a 0 state, with a feedback signal of "0". After the crude oil delivery is completed, the operator closes the opened manual valves 3 again. When the operator closes the opened manual valves 3 again, because... If an operator mistakenly opens the wrong valve, liquid will flow in the diversion pipe 2 of the incorrectly opened manual valve 3. This will cause the second flow sensor 4 to send a flow signal to the central controller 10 in real time, forming a feedback signal "1". The central controller 10 will receive two feedback signals "1" simultaneously. At this time, the central controller 10 will control the frequency converter 8 to shut down the oil pump 7, thereby interrupting the oil delivery. This prevents high-concentration crude oil from being delivered to the already stirred oil due to the operator's mistake, thus avoiding an imbalance in the oil concentration and preventing the oil from being wasted or the oil tank from being full. This better ensures the stable delivery of crude oil and oil. The operator can determine that the manual valve 3 was opened incorrectly by observing the shutdown of the oil pump 7, and then close both manual valves 3 in time. After manually resetting them, the operator can wait for the next crude oil delivery. If the oil level in the original stirring tank 1 is still insufficient, the manual valve 3 can be opened again to supply oil and then closed.

[0022] A further improvement is that the central controller 10 uses a PLC or microcontroller as its control core.

[0023] Among them, the central controller 10 uses a PLC or microcontroller as the control core, which is smaller in size, easier to install, more suitable for on-site online transformation, and has low transformation cost.

[0024] A further improvement is that the flow sensor 4 is a clamp-on flow meter.

[0025] Traditional flow sensors 4 require contact with the liquid, necessitating the drilling of the distributor pipe 2, which limits their ability to be installed online. Therefore, a clamp-on flow meter is used instead. This type of flow meter does not contact the liquid; it simply fits onto the outer wall of the distributor pipe 2 for measurement. This simplifies installation, allows for online assembly, and typically features built-in recording and a graphic LCD display. Two different transmitter sensors are available to suit various pipe sizes. Furthermore, the clamp-on flow meter incorporates real-time sound compensation to reduce the impact of liquid temperature and pressure changes on flow measurement.

[0026] A further improvement is that the central controller 10 has an alarm 11; the alarm 11 is an audible and visual alarm 11, which includes a buzzer and an LED indicator.

[0027] When the central controller 10 uses a PLC or microcontroller, it can have its own alarm 11. When two or more flow signals are detected, the alarm 11 is triggered in a timely manner to remind the operator to close the manual valve 3 and control the frequency converter 8 to shut down the oil pump 7. The alarm 11 is an audible and visual alarm, consisting of a buzzer and an LED indicator, which enables the operator to promptly detect operational errors and facilitate timely correction.

[0028] A further improvement is made in that the alarm 11 also includes an alarm light 5, with an alarm light 5 provided on one side of each of the manual switches.

[0029] When the alarm 11 sounds, the alarm light 5 can quickly determine whether there is an operational error. At this time, the buzzer function can be turned off to avoid noise. In particular, when the alarm light 5 is paired with each clamp-on flow meter, it can also quickly determine which two diversion pipes 2 are flowing based on the illumination of the alarm light 5, making it convenient and accurate to determine which manual valve 3 needs to be closed.

[0030] A further improvement is that the shutdown signal sent by the central controller 10 to the frequency converter 8 is after the alarm 11 has been continuously blaring for 20 to 45 seconds.

[0031] Because the central controller 10 will trigger the alarm 11 in time after detecting two flow signals, although immediately shutting off the oil pump 7 can stop the oil supply, this will also cause the oil level in the mixing tank 1, which requires the manual valve 3 to be closed, to not meet the optimal oil level requirement, resulting in a final ratio imbalance or a low total oil volume. It will require resetting before oil supply can resume, causing a short-term stoppage in the oil supply to the original mixing tank 1. To solve this problem, the timing of the central controller 10 controlling the frequency converter 8 to shut down is adjusted so that the trigger time for the central controller 10 to send the shutdown signal to the frequency converter 8 is after the alarm 11 has been continuously alarming for a certain period of time. In actual operation, the mixed oil is discharged after the manual valve 3 has been open for 1 minute. The impact of the crude oil flowing into the first mixing tank is negligible. Therefore, the trigger signal for the shutdown signal of the frequency converter 8 is that the alarm 11 will continue to alarm for 20 to 45 seconds. Since the alarm 11 will be triggered the moment the second manual valve 3 is opened, the operator will definitely still be at the second manual valve 3. After hearing the alarm signal, there will be 20 to 45 seconds to close the second manual valve 3 in time. This allows the central controller 10 to switch from two flow signals back to one in an extremely short time, so that the oil in the second mixing tank 1 will not be affected by the short-term inflow. At the same time, it can also ensure that the crude oil in the first mixing tank 1 is continuously supplied to the optimal position before being cut off, effectively solving the problem of crude oil supply time.

[0032] A further improvement is that the frequency converter 8 uses a relay or contactor to control the power supply to the oil pump 7.

[0033] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. An oil regulating valve door opening mistake preventing structure, characterized by: The device comprises a crude oil barrel (9), five stirring barrels (1), a main pipe (6) communicating with the crude oil barrel (9), shunt pipes (2) arranged between the main pipe (6) and the five stirring barrels (1), manual valves (3) arranged on the shunt pipes (2), and oil pumps (7) arranged on the main pipe (6), one side of the oil pump (7) being provided with a frequency converter (8), one flow sensor (4) being arranged on each shunt pipe (2), and a central controller (10), the frequency converter (8) and each flow sensor (4) being connected to the central controller (10) through electric signals, and the central controller (10) controlling the frequency converter (8) to close the oil pump (7) when receiving flow signals from two flow sensors (4) at the same time.

2. The anti-misoperation structure of an oil regulating valve according to claim 1, characterized in that: The central controller (10) uses a PLC or a microcontroller as a control core.

3. The anti-misoperation structure of an oil regulating valve according to claim 1, characterized in that: The flow sensor (4) uses a clamping type flow checker.

4. The anti-misoperation structure of an oil regulating valve according to claim 2, characterized in that: The central controller (10) is provided with an alarm (11).

5. The anti-misoperation structure of an oil regulating valve according to claim 4, wherein: The alarm (11) uses an audible and visual alarm (11) comprising a buzzer and an LED indicator.

6. The anti-misoperation structure of an oil regulating valve according to claim 4, wherein: The alarm (11) further comprises an alarm lamp (5), one side of each manual valve (3) being provided with an alarm lamp (5).

7. The anti-misoperation structure of an oil regulating valve according to claim 5, wherein: The central controller (10) causes the alarm (11) to continuously alarm for 20-45 seconds after receiving a closing signal from the frequency converter (8).

8. The anti-misoperation structure of an oil regulating valve according to claim 1, wherein: The frequency converter (8) uses a relay or a contactor to control the power supply of the oil pump (7).

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