Antistatic agent filling system and device, oil storage system and antistatic agent filling method

Abstract

The present application provides an antistatic agent filling system and device, an oil storage system and an antistatic agent filling method. The antistatic agent filling system includes a first conductivity sensor, a dosing assembly, a second conductivity sensor and a controller. The first conductivity sensor is arranged in the oil pipeline, and is used to detect the conductivity of the fuel in the oil pipeline and generate a first conductivity signal. The dosing assembly is connected to the oil pipeline and is located downstream of the first conductivity sensor. The dosing assembly is used to add antistatic agent to the fuel in the oil pipeline. The second conductivity sensor is arranged in the oil pipeline and is located downstream of the dosing assembly. It is used to detect the conductivity of the fuel added with the antistatic agent and generate a second conductivity signal. The controller is connected to the first conductivity sensor, the dosing assembly and the second conductivity sensor, and is used to control the dosing assembly to add antistatic agent when the first conductivity signal exceeds the first conductivity range, so that the second conductivity signal is within the second conductivity range.

Description

Technical Field

[0001] The present application relates to the field of petrochemical technology, and in particular to an antistatic agent filling system and device, an oil storage system, and an antistatic agent filling method. Background Art

[0002] Jet fuel is prone to static electricity during production, storage, transportation, and especially during high-speed refueling. If the charges separate and accumulate to a certain extent, it may cause serious safety accidents such as fire and explosion. Adding antistatic agents to jet fuel can quickly dissipate the charges, prevent accumulation, and prevent high voltage, thereby ensuring safety. Summary of the invention

[0003] The present application provides an improved antistatic agent filling system and device, an oil storage system and an antistatic agent filling method.

[0004] The present application embodiment provides an antistatic agent filling system, comprising:

[0005] a first conductivity sensor, disposed in an oil pipeline for conveying fuel to an oil tank, for detecting the conductivity of the fuel in the oil pipeline and generating a first conductivity signal;

[0006] an additive assembly connected to the oil pipeline and located downstream of the first conductivity sensor, the additive assembly being used to add an antistatic agent into the fuel in the oil pipeline;

[0007] a second conductivity sensor, disposed in the oil pipeline and located downstream of the additive assembly, for detecting the conductivity of the fuel added with the antistatic agent and generating a second conductivity signal; and

[0008] The controller is connected to the first conductivity sensor, the dosing assembly and the second conductivity sensor, and is used to control the dosing assembly to add the antistatic agent when the first conductivity signal exceeds a first conductivity range, so that the second conductivity signal is within a second conductivity range.

[0009] Further, the dosing assembly includes a dosing tank, a dosing pump and a dosing pipeline, the inlet of the dosing pump is connected to the dosing tank, the inlet of the dosing pipeline is connected to the outlet of the dosing pump, and the outlet of the dosing pipeline is connected to the oil pipeline;

[0010] The storage tank is used to store the antistatic agent, and the dosing pump is used to pump the antistatic agent in the storage tank into the dosing pipeline and inject it into the oil pipeline through the dosing pipeline; the controller is connected to the dosing pump and is used to control the dosing pump to work when the first conductivity signal exceeds the first conductivity range, so that the second conductivity signal is within the second conductivity range.

[0011] Furthermore, the dosing pump includes a first dosing pump and a second dosing pump, and the first dosing pump and the second dosing pump are connected in parallel between the storage tank and the inlet of the dosing pipeline; the controller is connected to the first dosing pump and the second dosing pump, and is used to control at least one of the first dosing pump and the second dosing pump to work when the first conductivity signal exceeds the first conductivity range.

[0012] Furthermore, the maximum flow rate of the dosing pump is in the range of 0.5 liters / hour to 1.5 liters / hour.

[0013] Furthermore, the inner diameter of at least one section of the dosing pipe is in the range of 3 mm to 5 mm.

[0014] Furthermore, the inner diameter of at least one section of the dosing pipe is 4 mm.

[0015] Furthermore, the dosing component includes a liquid level detection component provided in the storage tank, which is used to detect the liquid level of the antistatic agent in the storage tank.

[0016] Furthermore, the antistatic agent filling system includes a low liquid level alarm device, and the controller is connected to the liquid level detection component and the low liquid level alarm device, and is used to control the low liquid level alarm device to alarm when the liquid level detection component detects that the liquid level of the antistatic agent in the storage tank is lower than a low liquid level threshold; and / or

[0017] The liquid level detection component includes a tuning fork liquid level sensor arranged on the storage tank.

[0018] Further, the dosing assembly includes at least one of a flow buffer, a one-way valve and a solenoid valve arranged in the dosing pipeline; and / or

[0019] The dosing assembly comprises a filter disposed between the storage tank and the dosing pump; and / or

[0020] The antistatic agent filling system comprises a protective shell, and the filling pump is arranged in the protective shell.

[0021] Furthermore, the dosing component includes a dosing flow meter, which is used to detect the flow of the antistatic agent output by the dosing component and generate a dosing flow signal. The controller is connected to the dosing flow meter and is used to control the dosing component to slow down or stop dosing when the dosing flow signal is not lower than a dosing flow threshold.

[0022] Furthermore, the flow rate of the antistatic agent / the flow rate of the fuel oil is less than 2 mg / kg.

[0023] Furthermore, the dosing assembly is used to add the original liquid of the antistatic agent into the fuel in the oil pipeline.

[0024] Furthermore, the connection between the dosing assembly and the oil pipeline is closer to the first conductivity sensor than the second conductivity sensor.

[0025] Furthermore, the antistatic agent filling system includes an oil pipeline flow meter arranged in the oil pipeline, the oil pipeline flow meter is used to detect the flow of fuel in the oil pipeline and generate a fuel flow signal, and the controller is connected to the oil pipeline flow meter and is used to detect the first conductivity signal when the fuel flow signal reaches a flow threshold.

[0026] Furthermore, the oil pipeline flow meter is arranged between the dosing assembly and the second conductivity sensor, and the oil pipeline flow meter includes a bent and extended static stirring portion for stirring and mixing the antistatic agent and the fuel when the antistatic agent and the fuel flow through.

[0027] Furthermore, the oil pipeline flowmeter comprises a U-type mass flowmeter.

[0028] Furthermore, the antistatic agent filling system includes a conductivity alarm device, and the controller is connected to the conductivity alarm device to control the conductivity alarm device to alarm when the first conductivity signal of the first conductivity sensor is not lower than an upper limit value or not higher than a lower limit value.

[0029] Further, the controller includes a main controller and a dosing controller, the main controller is connected to the first conductivity sensor and the second conductivity sensor, and is used to generate a dosing control signal according to the first conductivity signal and the second conductivity signal, and the dosing controller is connected to the main controller and the dosing component, and is used to respond to the dosing control signal and control the dosing component; or

[0030] The controller comprises an additive controller, which is connected to the first conductivity sensor, the second conductivity sensor, and the additive component, and is used to control the additive component according to the first conductivity signal and the second conductivity signal.

[0031] The present application provides an oil storage system, comprising:

[0032] Oil tank;

[0033] Fuel pipelines for transporting fuel to fuel tanks; and

[0034] Any of the above antistatic agent filling systems is connected to the oil pipeline and is used to add antistatic agent to the fuel in the oil pipeline.

[0035] The embodiment of the present application provides an antistatic agent filling device, comprising:

[0036] Storage tank, used to store antistatic agent;

[0037] an additive pump, the inlet of which is connected to the outlet of the storage tank, and is used to pump out the antistatic agent in the storage tank;

[0038] An additive pipeline, the inlet of which is connected to the outlet of the additive pump, and the outlet of which is connected to an oil pipeline for delivering fuel to an oil tank, and is used to deliver the antistatic agent pumped out by the additive pump to the oil pipeline;

[0039] The dosing controller is connected to the dosing pump and is used to control the dosing pump to pump out the antistatic agent when the conductivity of the fuel in the oil pipeline without the antistatic agent is beyond the first conductivity range, so that the conductivity of the fuel with the antistatic agent is within the second conductivity range.

[0040] Furthermore, the dosing pump includes a first dosing pump and a second dosing pump, and the first dosing pump and the second dosing pump are connected in parallel between the storage tank and the inlet of the dosing pipeline; the dosing controller is connected to the first dosing pump and the second dosing pump, and is used to control at least one of the first dosing pump and the second dosing pump to operate when the conductivity of the fuel without the antistatic agent is beyond the first conductivity range.

[0041] Furthermore, the maximum flow rate of the dosing pump is in the range of 0.5 liters / hour to 1.5 liters / hour.

[0042] Furthermore, the inner diameter of at least one section of the dosing pipe is in the range of 3 mm to 5 mm.

[0043] Furthermore, the inner diameter of at least one section of the dosing pipe is 4 mm.

[0044] Furthermore, the antistatic agent filling device includes a liquid level detection component provided on the storage tank, which is used to detect the liquid level of the antistatic agent in the storage tank.

[0045] Furthermore, the liquid level detection component includes a tuning fork liquid level sensor provided on the storage tank.

[0046] Further, the antistatic agent filling device includes at least one of a flow buffer, a one-way valve and a solenoid valve arranged in the filling pipeline; and / or

[0047] The dosing assembly comprises a filter disposed between the storage tank and the dosing pump; and / or

[0048] The antistatic agent filling device comprises a protective shell, and the dosing pump and the dosing controller are arranged in the protective shell.

[0049] Furthermore, the antistatic agent filling device includes an additive flow meter arranged on the additive pipeline, the additive flow meter is used to detect the flow rate of the antistatic agent pumped out by the additive pump and generate an additive flow signal, and the additive controller is used to control the additive pump to reduce the pumping rate or stop working when the additive flow signal is not lower than the additive flow threshold.

[0050] Furthermore, the flow rate of the antistatic agent / the flow rate of the fuel oil is less than 2 mg / kg.

[0051] Furthermore, the storage tank is used to store the original liquid of the antistatic agent, and the dosing pump is used to pump out the original liquid of the antistatic agent and inject it into the fuel through the dosing pipeline.

[0052] The present application embodiment provides an antistatic agent filling system, comprising:

[0053] The antistatic agent filling device described in any one of the above items;

[0054] a first conductivity sensor, located upstream of the antistatic agent filling device, for detecting the conductivity of the fuel in the oil pipeline to which the antistatic agent is not added; and

[0055] The second conductivity sensor is located downstream of the antistatic agent filling device and is used to detect the conductivity of the fuel added with the antistatic agent.

[0056] The present application provides an oil storage system, comprising:

[0057] Oil tank;

[0058] Fuel pipelines for transporting fuel to fuel tanks; and

[0059] The antistatic agent filling system is connected to the oil pipeline and is used to add antistatic agent to the fuel in the oil pipeline.

[0060] The present application embodiment provides a method for adding an antistatic agent, comprising:

[0061] Detecting the conductivity of the fuel without adding antistatic agent in the oil pipeline to generate a first conductivity signal;

[0062] detecting the conductivity of the fuel to which the antistatic agent is added, and generating a second conductivity signal; and

[0063] When the first conductivity signal exceeds a first conductivity range, the antistatic agent is controlled to be added so that the second conductivity signal is within a second conductivity range.

[0064] Furthermore, the method comprises:

[0065] Detecting the flow rate of the antistatic agent and generating an agent flow rate signal;

[0066] When the dosing flow rate signal is not lower than the dosing flow rate threshold, the dosing is controlled to be slowed down or stopped.

[0067] Furthermore, the flow rate of the antistatic agent / the flow rate of the fuel oil is less than 2 mg / kg.

[0068] Furthermore, the method comprises:

[0069] Detecting the flow rate of the fuel in the oil pipeline and generating a fuel flow signal;

[0070] When the fuel flow rate signal reaches a flow rate threshold, the first conductivity signal is detected.

[0071] Furthermore, the method comprises:

[0072] When the first conductivity signal is not lower than an upper limit value or not higher than a lower limit value, the conductivity alarm device is controlled to sound an alarm.

[0073] Furthermore, the method comprises:

[0074] detecting the liquid level of the stored antistatic agent;

[0075] When the liquid level of the antistatic agent is lower than a low liquid level threshold, the low liquid level alarm device is controlled to sound an alarm.

[0076] An embodiment of the present application provides an antistatic agent filling system for implementing any of the antistatic agent filling methods described above.

[0077] The present application provides an oil storage system, comprising:

[0078] Oil tank;

[0079] Fuel pipelines for transporting fuel to fuel tanks; and

[0080] The antistatic agent filling system is connected to the oil pipeline and is used to add antistatic agent to the fuel in the oil pipeline.

[0081] Some embodiments of the present application realize automatic detection and automatic addition during the oil transportation process, thereby greatly reducing manpower and electricity and having high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] Figure 1 Shown is a schematic diagram of an embodiment of the oil storage system of the present application;

[0083] Figure 2 Shown Figure 1 A schematic diagram of an embodiment of an antistatic agent filling system for an oil storage system is shown;

[0084] Figure 3 Shown Figure 2 A circuit schematic diagram of an embodiment of an antistatic agent filling system shown;

[0085] Figure 4 Shown Figure 2 A circuit schematic diagram of another embodiment of the antistatic agent filling system shown;

[0086] Figure 5 Shown is a flow chart of an embodiment of the antistatic agent filling method of the present application. DETAILED DESCRIPTION

[0087] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0088] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0089] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate that there is at least one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect.

[0090] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims may refer to the singular form and may also include the plural form unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in this article refers to and includes any or all possible combinations of one or more associated listed items. Unless otherwise indicated, similar words such as "connect" or "connected" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0091] Figure 1 The schematic diagram of an embodiment of the oil storage system 100 is shown. The oil storage system 100 includes an oil tank 200, an oil pipeline 300 and an antistatic agent filling system 400. The oil pipeline 300 is used to transport fuel to the oil tank 200. The oil tank 200 is used to store fuel, and the stored fuel can be output from the oil tank 200 for use. In some embodiments, the fuel is aviation fuel (aviation fuel). The oil tank 200 and the oil pipeline 300 are located in the oil depot. The oil pipeline 300 is an oil pipeline at the storage end, which is connected to the inlet of the oil tank 200, receives the fuel input from the outside of the oil depot, and delivers it to the oil tank 200. For the purpose of illustration only, only one oil tank 200 is shown in the figure, but there can be multiple oil tanks 200. The antistatic agent filling system 400 is connected to the oil pipeline 300 and is used to add antistatic agent to the fuel in the oil pipeline 300.

[0092] Figure 2FIG. 4 is a schematic diagram of an embodiment of an antistatic agent filling system 400. Figure 1 and 2 The antistatic agent filling system 400 includes a first conductivity sensor 410, a dosing assembly 420, a second conductivity sensor 430, and a controller 440 (eg, Figure 3 4. As shown in FIG. 4 ). The first conductivity sensor 410 is provided in the oil pipeline 300 for delivering the fuel to the oil tank, and is used to detect the conductivity of the fuel in the oil pipeline 300 and generate a first conductivity signal. The first conductivity sensor 410 is located upstream of the dosing component 420, and detects the conductivity of the fuel without adding the antistatic agent. The second conductivity sensor 430 is provided in the oil pipeline 300 and is located downstream of the dosing component 420, and is used to detect the conductivity of the fuel with the antistatic agent added and generate a second conductivity signal. The first conductivity sensor 410 is located upstream of the second conductivity sensor 430.

[0093] The dosing assembly 420 is connected to the oil pipeline 300 and is located downstream of the first conductivity sensor 410. The dosing assembly 420 is used to add the antistatic agent to the fuel in the oil pipeline 300. In some embodiments, the dosing assembly 420 is used to add the stock solution of the antistatic agent to the fuel in the oil pipeline 300, so that there is no need to dilute the stock solution of the antistatic agent, no need to do secondary blending of small samples after receiving the fuel into the oil tank, and no need to pour the tank for secondary dosing, thereby saving manpower and electricity. In addition, when the dosing assembly 420 adds the antistatic agent to the oil pipeline 300, the dosing process is less restricted by the pipeline process in the storage area, the turnover rate of the oil tank 400 is improved, and the reliability is improved.

[0094] In some embodiments, the connection between the dosing component 420 and the oil pipeline 300 is closer to the first conductivity sensor 410 relative to the second conductivity sensor 430, so that the antistatic agent can be added in time after the first conductivity sensor 410 detects the conductivity of the fuel without the antistatic agent added, and the antistatic agent can be mixed with the fuel during the fuel flow. The conductivity that can be detected by the second conductivity sensor 430 is more accurate, so the antistatic agent can be added more accurately.

[0095] In some embodiments, the dosing assembly 420 includes a storage tank 421, a dosing pump 422 and a dosing pipeline 423. The storage tank 421 is used to store an antistatic agent. The dosing pump 422 is used to pump the antistatic agent in the storage tank 421 into the dosing pipeline 423, and inject it into the oil pipeline 300 through the dosing pipeline 423. The inlet of the dosing pump 422 is connected to the storage tank 421, and is used to pump out the antistatic agent in the storage tank 421. The inlet of the dosing pipeline 423 is connected to the outlet of the dosing pump 422, and the outlet of the dosing pipeline 423 is connected to the oil pipeline 300, and is used to transport the antistatic agent pumped out by the dosing pump 422 to the oil pipeline 300. In some embodiments, the storage tank 421 is used to store the stock solution of the antistatic agent, and the dosing pump 422 is used to pump out the stock solution of the antistatic agent and inject it into the fuel through the dosing pipeline 423. The dosing pump 422 can include a metering pump, and the dosing accuracy is high.

[0096] In some embodiments, the dosing pump 422 includes a first dosing pump 4221 and a second dosing pump 4222, and the first dosing pump 4221 and the second dosing pump 4222 are connected in parallel between the storage tank 421 and the inlet of the dosing pipeline 423. The first dosing pump 4221 is connected between the outlet of the storage tank 421 and the inlet of the dosing pipeline 423, and the second dosing pump 4222 is also connected between the outlet of the storage tank 421 and the inlet of the dosing pipeline 423. The first dosing pump 4221 and the second dosing pump 4222 can both pump fuel from the storage tank 421 to the dosing pipeline 423. In some embodiments, the first dosing pump 4221 and the second dosing pump 4222 are the same dosing pumps. In some embodiments, during the dosing process, one of the first dosing pump 4221 and the second dosing pump 4222 works, and the other does not work. If one of the first dosing pump 4221 and the second dosing pump 4222 fails, the other can work to ensure that dosing can be done. In some other embodiments, during the dosing process, both the first dosing pump 4221 and the second dosing pump 4222 are in operation.

[0097] In some embodiments, the maximum flow range of the dosing pump 422 is 0.5 liters / hour-1.5 liters / hour. In one embodiment, the maximum flow of the dosing pump 422 is 1.0 liters / hour. Fuel, especially aviation fuel, on the one hand, adds antistatic agent to make the conductivity meet the requirements, on the other hand, the amount of antistatic agent added is limited, and the concentration of the antistatic agent in the fuel is less than the maximum concentration allowed, so as to avoid the antistatic agent affecting some physical and chemical indicators of the fuel, so as not to affect the quality of the fuel. In order to ensure the flight safety of the aircraft, the quality requirements of aviation fuel are higher, so in order to make the conductivity of aviation fuel meet the standards and avoid affecting the quality of aviation fuel, the precision requirements of the amount of antistatic agent added are higher. Using the dosing pump 422 with the above-mentioned maximum flow range, the addition precision of the antistatic agent can be made high. In some embodiments, the stock solution of the antistatic agent is added, in order to ensure that the conductivity meets the requirements and ensure the quality of the fuel (especially aviation fuel), the addition precision of the stock solution is higher. By using the dosing pump 422 with the maximum flow range, the amount of the antistatic agent stock solution pumped out by the dosing pump 422 can be adjusted with higher accuracy, and the antistatic agent stock solution can be added more accurately, so that the quality of the fuel can be guaranteed while ensuring that the conductivity of the fuel meets the standard, which is particularly beneficial to ensuring the high quality of aviation fuel. In some embodiments, the maximum flow range of the first dosing pump 4221 and the second dosing pump 4222 is 0.5 liters / hour-1.5 liters / hour, and in one example, both can be 1.0 liters / hour.

[0098] In some embodiments, the inner diameter range of at least one section of the additive pipeline 423 is 3mm-5mm, and the inner diameter of this section of the pipeline is small, and the caliber for the antistatic agent to flow out is small, which is conducive to adding the antistatic agent more accurately. Especially for the stock solution of adding the antistatic agent, the additive pipeline 423 with a small inner diameter is conducive to accurately adding the stock solution of the antistatic agent, so as to better ensure the quality of the fuel (especially aviation fuel). In some embodiments, the inner diameter range of the additive pipeline 423 relative to the additive pump 422 close to the oil pipeline 300 is 3mm-5mm. In one embodiment, the inner diameter of at least one section of the additive pipeline 423 is 4mm, which is conducive to adding the antistatic agent more accurately. In some embodiments, the inner diameter of the additive pipeline 423 relative to the additive pump 422 close to the oil pipeline 300 is 4mm. In some embodiments, the outer diameter of the additive pipeline 423 is 6mm. The additive pipeline 423 is a stainless steel pipe.

[0099] In certain embodiments, dosing assembly 420 comprises dosing flowmeter 424, and dosing flowmeter 424 is used for detecting the flow of the antistatic agent of dosing assembly 420 output, produces dosing flow signal.Dosing flowmeter 424 can be arranged at dosing pipeline 423, is positioned between dosing pump 422 and oil pipeline 300, is used for detecting the flow of the antistatic agent that dosing pump 422 pumps out.In certain embodiments, dosing pipeline 423 comprises the first dosing pipeline 4231 that is connected between dosing pump 422 and dosing flowmeter 424, and the second dosing pipeline 4232 that is connected between dosing flowmeter 424 and oil pipeline 300.The internal diameter of the second dosing pipeline 4232 is less than the internal diameter of the first dosing pipeline 4231, and the scope of the internal diameter of the second dosing pipeline 4232 can be 3mm-5mm, for example 4mm.In certain embodiments, dosing flowmeter 424 can be oval gear flowmeter.

[0100] In some embodiments, the dosing assembly 420 includes at least one of a flow buffer 425, a check valve 427, and a solenoid valve 428 disposed in the dosing pipeline 423. In some embodiments, the dosing assembly 420 includes a flow buffer 425 disposed in the dosing pipeline 423 to prevent the flow of the antistatic agent from presenting a pulse-shaped fluctuation, so that the antistatic agent flows out more smoothly, and the antistatic agent is more evenly added to the fuel flowing in the oil pipeline 300, thereby improving the agent efficiency. In some embodiments, the flow buffer 425 is located upstream of the dosing flow meter 424.

[0101] In some embodiments, the dosing assembly 420 includes a solenoid valve 428 disposed on the dosing pipeline 423. The solenoid valve 428 is opened when dosing begins, and is kept open during dosing. The solenoid valve 428 is closed when dosing is finished, so that the negative pressure in the oil pipeline 300 when no dosing is performed can be prevented from sucking the antistatic agent into the oil pipeline 300. In some embodiments, the solenoid valve 428 is located downstream of the dosing flow meter 424.

[0102] In some embodiments, the dosing assembly 420 includes a one-way valve 427 disposed on the dosing pipeline 423, allowing the antistatic agent to flow in the direction of the oil pipeline 300, preventing the fuel from entering the antistatic agent in the dosing pipeline 423, and maintaining the positive pressure of the dosing assembly 420, ensuring that the outlet of the dosing assembly 420 maintains a certain pressure, which is slightly higher than the pressure of the oil pipeline 300, which is conducive to dosing. In some embodiments, the one-way valve 427 is located downstream of the dosing flow meter 424 and downstream of the solenoid valve 428.

[0103] In some embodiments, the dosing assembly 420 includes a filter 426, such as a metal mesh filter, disposed between the storage tank 421 and the dosing pump 422. The filter 426 is located at the outlet pipeline of the storage tank 421, before the dosing pump 422, and in the present embodiment, before the first dosing pump 4221 and the second dosing pump 4222 of the dosing pump 422. The filter 426 can filter the impurities of the antistatic agent in the storage tank 421 to protect the dosing pump 422. Because the dosing pump 422 is very precise, tiny impurity particles may damage the dosing pump 422, and the filter 426 can well protect the dosing pump 422 to prevent the dosing pump 422 from being damaged. The antistatic agent filling system 400 includes a protective shell 429. In some embodiments, the dosing pump 422 of the dosing assembly 420 is disposed in the protective shell 429, and the protective shell 429 can play a protective role, meet the explosion-proof requirements, and can realize the compact installation and centralized management of the equipment. The dosing flow meter 424, flow buffer 425, etc. of the dosing assembly 420 can also be arranged in the protective shell 429, which can realize the compact installation and centralized management of the equipment. In some embodiments, the storage tank 421 can be arranged in the protective shell 429. In the illustrated embodiment, the storage tank 421 can be arranged outside the protective shell 429, which is convenient for dosing, and the protective shell 429 can be designed to be relatively small. The electromagnetic valve 428 and the one-way valve 427 are arranged outside the protective shell 429.

[0104] In some embodiments, the antistatic agent filling system 400 includes an oil pipeline flow meter 450 disposed in the oil pipeline 300, and the oil pipeline flow meter 450 is used to detect the flow of fuel in the oil pipeline 300 and generate a fuel flow signal. When the fuel flow signal reaches the flow threshold and the first conductivity signal exceeds the first conductivity range, the dosing component 420 adds the agent. When fuel flows through the oil pipeline 300 or the flow of the fuel reaches a certain value, if the conductivity of the fuel without adding the antistatic agent does not meet the requirements, the dosing component 420 can work and add the antistatic agent.

[0105] In some embodiments, the oil pipeline flow meter 450 is arranged between the dosing assembly 420 and the second conductivity sensor 430. The oil pipeline flow meter 450 includes a bent and extended static stirring portion 451, which is used to stir and mix the antistatic agent and the fuel oil when the antistatic agent and the fuel oil flow through, and the stirring and mixing effect is better, so that the agent effect is maximized as much as possible. The eddy current generated by the bending of the oil pipeline flow meter 450 is used for stirring, so that the antistatic agent filling system 400 has a simple structure and fewer components. The second conductivity sensor 430 is located downstream of the oil pipeline flow meter 450, and detects the conductivity of the fuel oil containing the antistatic agent after stirring and mixing by the oil pipeline flow meter 450. The detected conductivity of the fuel oil added with the antistatic agent is more accurate, so that the addition of the antistatic agent can be controlled more accurately. In some embodiments, the oil pipeline flow meter 450 includes a mass flow meter. In some embodiments, the oil pipeline flow meter 450 includes a U-shaped mass flow meter, which can accurately detect the flow rate and can achieve good stirring and mixing.

[0106] Figure 3 FIG. 4 is a circuit diagram of an embodiment of an antistatic agent filling system 400. Figure 2 and 3 , the controller 440 is connected to the first conductivity sensor 410, the dosing component 420 and the second conductivity sensor 430, and is used to control the dosing component 420 to add antistatic agent when the first conductivity signal exceeds the first conductivity range, so that the second conductivity signal is within the second conductivity range. When the conductivity of the fuel without antistatic agent added in the oil pipeline 300 exceeds the first conductivity range, the controller 440 controls the dosing component 420 to add antistatic agent, so that the conductivity of the fuel with antistatic agent added is within the second conductivity range. The first conductivity range is the fuel conductivity range that meets the standard. The first conductivity signal exceeds the first conductivity range, which means that the conductivity of the fuel input into the oil depot does not meet the standard and antistatic agent needs to be added. The second conductivity range is the target setting range, which meets the standard conductivity range. In one example, when the first conductivity signal is less than 100pS / m, the controller 440 controls the dosing assembly 420 to add antistatic agent, so that the second conductivity signal is stabilized at 250pS / m, the first conductivity range is not less than 100pS / m, and the second conductivity range is a conductivity range that meets the requirements including 250pS / m. For different fuels, the first conductivity range and / or the second conductivity range may be different. The controller 440 adjusts the flow rate of the antistatic agent output by the dosing assembly 420 according to the second conductivity signal until the second conductivity signal is within the second conductivity range.

[0107] The embodiment of the present application can automatically detect the conductivity value (first conductivity signal) of the upstream of the oil pipeline 300 in real time, automatically add antistatic agent into the oil pipeline 300, and monitor the addition effect downstream through the second conductivity sensor 430, automatically adjust the addition speed and amount, and ensure accurate addition. In this way, automatic detection and automatic addition are achieved during the oil transportation process, thereby greatly reducing manpower and electricity, greatly improving production efficiency, and the system operates safely, reliably, and efficiently, reducing production risks, and does not affect the daily oil collection order; and accurate addition is achieved, the quality of fuel is improved, the amount of antistatic agent used is greatly reduced, and the cost is greatly reduced.

[0108] In some embodiments, the controller 440 is connected to the dosing pump 422 of the dosing component 420, and is used to control the dosing pump 422 to work when the first conductivity signal exceeds the first conductivity range, so that the second conductivity signal is within the second conductivity range. The controller 440 controls the pumping rate of the dosing pump 422 to control the flow rate of the antistatic agent so that the second conductivity can reach the second conductivity range. In some embodiments, the controller 440 is connected to the first dosing pump 4221 and the second dosing pump 4222, and is used to control at least one of the first dosing pump 4221 and the second dosing pump 4222 to work when the first conductivity signal exceeds the first conductivity range. In some embodiments, the controller 440 can control the first dosing pump 4221 to work, the second dosing pump 4222 not to work, and the first dosing pump 4221 to pump the antistatic agent; or can control the second dosing pump 4222 to work, the first dosing pump 4221 not to work, and the second dosing pump 4222 to pump the antistatic agent. In some embodiments, the controller 440 can control the first additive pump 4221 and the second additive pump 4222 to work in turns, control the first additive pump 4221 to work for a period of time, and then control the second additive pump 4222 to work for the first period of time, and operate in such a cycle, thereby extending the service life of the first additive pump 4221 and the second additive pump 4222.

[0109] In some embodiments, the controller 440 may include a dosing controller 441 and a main controller 442. The main controller 442 is connected to the first conductivity sensor 410 and the second conductivity sensor 430, and is used to generate a dosing control signal according to the first conductivity signal and the second conductivity signal. The dosing controller 441 is connected to the main controller 442 and the dosing component 420, and is used to respond to the dosing control signal and control the dosing component 420. The dosing control signal indicates dosing or not dosing, and indicates the flow rate of the dosing when indicating dosing. The dosing controller 441 responds to the dosing control signal, controls the dosing component 420 to work or not, and controls the dosing component 420 to work. When the dosing component 420 is working, the flow rate of the antistatic agent output by the dosing component 420 can be controlled. The dosing controller 441 and the main controller 442 work together to improve the control efficiency. The dosing controller 441 is connected to the dosing pump 422, and is used to control the dosing pump 422 to pump out the antistatic agent when the conductivity of the fuel without antistatic agent added in the oil pipeline 300 exceeds the first conductivity range (i.e., the first conductivity signal exceeds the first conductivity range), so that the conductivity of the fuel with antistatic agent added is within the second conductivity range (i.e., the second conductivity signal is within the second conductivity range). In some embodiments, the dosing controller 441 is connected to the first dosing pump 4221 and the second dosing pump 4222, and is used to control at least one of the first dosing pump 4221 and the second dosing pump 4222 to work when the conductivity of the fuel without antistatic agent added exceeds the first conductivity range.

[0110] In certain embodiments, dosing controller 441 can be located in protective shell 429, or be located near dosing assembly 420 and be located in separate shell, dosing controller 441 is close to dosing assembly 420, conveniently controls dosing assembly 420. Dosing controller 441 can select the processing chip with low processing power relative to main controller 442, volume can be small, can reduce the volume of shell, make the equipment structure of dosing site compact, and cost is low. Main controller 442 can be located in control center, processing power can be strong, processing speed is fast, can make dosing more timely, accurate, and can realize more functions. In certain embodiments, main controller 442 can adopt programmable logic controller. Dosing controller 441 can communicate with main controller 442 in real time, can adopt wired or wireless communication.

[0111] In some embodiments, the controller 440 is connected to the additive flow meter 424, and is used to control the additive assembly 420 to slow down or stop the additive when the additive flow signal is not lower than the additive flow threshold, reduce the flow of the antistatic agent or stop adding the antistatic agent, so that the concentration of the antistatic agent in the fuel does not exceed the maximum allowable concentration, so as to prevent the antistatic agent from affecting some physical and chemical indicators of the fuel and ensure the quality of the fuel. The additive controller 441 is used to control the additive pump 422 to reduce the pumping rate or stop working when the additive flow signal is not lower than the additive flow threshold, so as to slow down or stop the additive. In some embodiments, the main controller 442 is connected to the additive flow meter 424, and when the additive flow signal is not lower than the additive flow threshold, it sends a control instruction to the additive controller 441, so that the additive controller 441 controls the additive pump 422 to reduce the pumping rate or stop working.

[0112] In some embodiments, the flow rate of the antistatic agent / the flow rate of the fuel oil is less than 2 mg / kg, so that the concentration of the antistatic agent in the fuel oil does not exceed the maximum allowable concentration, thereby ensuring the quality of the fuel oil. The controller 440 is connected to the oil pipeline flow meter 450, and is used to detect the first conductivity signal when the fuel flow signal reaches the flow threshold. If the ratio of the additive flow signal to the fuel flow signal is not less than 2 mg / kg, the controller 440 is used to control the additive assembly 420 to slow down or stop the additive. In some embodiments, the main controller 442 is connected to the oil pipeline flow meter 450, collects the fuel flow signal, and detects the first conductivity signal when the fuel flow signal reaches the flow threshold. If the ratio of the additive flow signal to the fuel flow signal is not less than 2 mg / kg, the main controller 442 sends a control instruction to the additive controller 441, so that the additive controller 441 controls the additive assembly 420 to slow down or stop the additive.

[0113] In some embodiments, the controller 440 is connected to the solenoid valve 428 to control the on and off of the solenoid valve 428. In one embodiment, the dosing controller 441 is connected to the solenoid valve 428 to control the on and off of the solenoid valve 428. In one example, when the fuel flow rate is greater than 100 tons / hour, the controller 440 detects the first conductivity signal of the first conductivity sensor 410. If the first conductivity signal is less than 100pS / m, the controller 440 controls the solenoid valve 428 to open, controls the dosing pump 422 to start, and the antistatic agent filling system 400 is pressurized. The pressure difference reaches a certain value, and the antistatic agent enters the oil pipeline 300. The controller 440 adjusts the pumping rate of the dosing pump 422 according to the second conductivity signal to control the flow rate of the antistatic agent so that the second conductivity signal is stabilized at 250pS / m. When the first conductivity signal is within the first conductivity range, stop dosing, the controller 440 controls the dosing pump 422 to stop working, and controls the solenoid valve 428 to close.

[0114] In some embodiments, the main controller 442 collects the conductivity signals of the first conductivity sensor 410 and the second conductivity sensor 430, and can record the conductivity signals. The main controller 442 collects the additive flow signal of the additive flow meter 424, and records it correspondingly with the fuel flow signal, which can be used to count the amount of antistatic agent added in each batch. The additive flow signal, the fuel flow signal, the first conductivity signal and the second conductivity signal can be recorded correspondingly.

[0115] In some embodiments, the antistatic agent filling system 400 includes a conductivity alarm device 460, and the controller 440 is connected to the conductivity alarm device 460, which is used to control the conductivity alarm device 460 to alarm when the first conductivity signal of the first conductivity sensor 410 is not lower than the upper limit value or not higher than the lower limit value to remind the staff. In some embodiments, the main controller 442 is connected to the conductivity alarm device 460 to control the conductivity alarm device 460. The conductivity alarm device 460 can be set in the control center so that the staff can obtain the alarm information in the monitoring room. The conductivity alarm device 460 may include a sound alarm device and / or a display alarm device. In some embodiments, the conductivity alarm information can be displayed on the display screen of the control center.

[0116] In some embodiments, the dosing component 420 includes a liquid level detection component 4211 disposed in the storage tank 421, which is used to detect the liquid level of the antistatic agent in the storage tank 421, so that the storage amount of the antistatic agent can be known, so as to avoid the failure to add the antistatic agent to the storage tank 421 in time and cause the failure to add the agent to the oil pipeline 300. The controller 440 is connected to the liquid level detection component 4211, collects the signal of the liquid level detection component 4211, and determines the liquid level in the storage tank 421. In some embodiments, the liquid level detection component 4211 can be arranged at the set low liquid level of the storage tank 421, and when the antistatic agent is reduced to the low liquid level, it is necessary to replenish the antistatic agent in time. The signal when the liquid level detection component 4211 detects the liquid and the signal when the liquid is not detected is different, and the controller 440 can determine whether the antistatic agent drops to the low liquid level according to the signal, and when the low liquid level is reached, the staff can be reminded in time. In some embodiments, the main controller 442 is connected to the liquid level detection component 4211, and collects the signal of the liquid level detection component 4211.

[0117] In some embodiments, the liquid level detection component 4211 includes a tuning fork liquid level sensor provided in the storage tank 421. The vibration frequency of the tuning fork is different when the tuning fork liquid level sensor is filled with liquid and when the tuning fork liquid level sensor is not filled with liquid. The controller 440 can determine whether the liquid level has dropped to the position of the tuning fork liquid level sensor based on the signal of the tuning fork liquid level sensor.

[0118] In other embodiments, the liquid level detection component 4211 can detect the specific liquid level of the antistatic agent in the storage tank 421 and generate different signals corresponding to different liquid levels. The controller 440 can determine the specific liquid level value based on the signal and can display it through a display device to inform the staff of the specific liquid level value.

[0119] In some embodiments, the antistatic agent filling system 400 includes a low liquid level alarm device 470, and the controller 440 is connected to the low liquid level alarm device 470, which is used to control the low liquid level alarm device 470 to alarm when the liquid level detection component 4211 detects that the liquid level of the antistatic agent in the storage tank 421 is lower than the low liquid level threshold (the liquid level value at the low liquid level), so as to remind the staff to replenish the antistatic agent in time. In some embodiments, the main controller 442 and the low liquid level alarm device 470 control the low liquid level alarm device 470. The low liquid level alarm device 470 may include a sound alarm device and / or a display alarm device. In some embodiments, the low liquid level alarm device 470 can be located in a control center. The low liquid level alarm information can be displayed on the display screen of the control center. In other embodiments, the low liquid level alarm device 470 can be located near the dosing component 420, located in the oil depot, to remind the on-site staff of the oil depot.

[0120] In some embodiments, the main controller 442 is provided with a password protection function to ensure data security. In some embodiments, the parameters in the main controller 442, such as the first conductivity range, the second conductivity range, the upper limit and lower limit of the conductivity mentioned above, etc., can be manually set, and the staff can adjust the parameters according to the actual fuel, so as to adapt to different fuels, and the system has a wider range of applications. In some embodiments, the dosing controller 441 can be debugged and parameters can be set by the main controller 442. The dosing controller 441 is in the oil depot, and the main controller 442 is outside the oil depot. It can be remotely controlled, so that the dosing controller 441 can be debugged and parameters can be set without opening the housing (such as the protective housing 429) where the dosing controller 441 is located, so that the explosion-proof requirements in the oil depot can be met, and the safety is high.

[0121] In some embodiments, the dosing accuracy of the dosing assembly 420 can be calibrated by a calibration device. In some embodiments, a standard conductivity meter can be used, the standard conductivity meter and the first conductivity sensor 410 can test the same sample, and then the data can be corrected by connecting the antistatic agent filling system 400 through a device such as a computer, so as to perform calibration.

[0122] Figure 4 FIG. 4 is a circuit schematic diagram of another embodiment of an antistatic agent filling system 400 . Figure 4 The antistatic agent filling system 400 shown is similar to Figure 3 The antistatic agent filling system 400 shown in FIG. Figure 3 The embodiment shown, Figure 4 In the embodiment of the invention, the dosing controller 441 is connected to the first conductivity sensor 410, the second conductivity sensor 430, and the dosing assembly 420, and is used to control the dosing assembly 420 according to the first conductivity signal and the second conductivity signal. When the first conductivity signal exceeds the first conductivity range, the dosing controller 441 controls the dosing assembly to add antistatic agent so that the second conductivity signal is within the second conductivity range. The dosing controller 441 controls the dosing pump 422. The dosing controller 441 controls the first dosing pump 4221 and the second dosing pump 4222. By collecting conductivity and controlling dosing by the dosing controller 441, the dosing controller 441 can automatically control dosing, and the main controller 442 can be offline.

[0123] exist Figure 4 In the illustrated embodiment, the dosing controller 441 is connected to the solenoid valve 428 to control the on and off of the solenoid valve 428. The dosing controller 441 is connected to the dosing flow meter 424 to control the dosing assembly 420 to slow down or stop dosing when the dosing flow signal is not lower than the dosing flow threshold, reduce the flow of the antistatic agent or stop adding the antistatic agent, so that the concentration of the antistatic agent in the fuel does not exceed the maximum allowable concentration, so as to prevent the antistatic agent from affecting some physical and chemical indicators of the fuel and ensure the quality of the fuel.

[0124] exist Figure 4 In the illustrated embodiment, the dosing controller 441 is connected to the liquid level detection component 4211 to collect signals from the liquid level detection component 4211. The dosing controller 441 is connected to the low liquid level alarm device 470 to control the low liquid level alarm device 470 to alarm when the liquid level detection component 4211 detects that the liquid level of the antistatic agent in the storage tank 421 is lower than the low liquid level threshold (the liquid level value at the low liquid level), thereby reminding the staff to replenish the antistatic agent in time. The low liquid level alarm device 470 can be located in the oil depot, near the dosing component 420.

[0125] exist Figure 4 In the illustrated embodiment, the dosing controller 441 is connected to the conductivity alarm device 460, and is used to control the conductivity alarm device 460 to alarm when the first conductivity signal of the first conductivity sensor 410 is not lower than the upper limit or not higher than the lower limit, so as to remind the staff. The conductivity alarm device 460 can be located in the oil depot and can be set near the dosing component 420.

[0126] exist Figure 4In the embodiment shown, the dosing controller 441 is connected to the oil pipeline flow meter 450, and is used to detect the first conductivity signal when the fuel flow signal reaches the flow threshold. If the ratio of the dosing flow signal to the fuel flow signal is not less than 2 mg / kg, the dosing controller 441 is used to control the dosing assembly 420 to slow down or stop dosing.

[0127] The main controller 442 can be used to set the parameters (such as the first conductivity range, the second conductivity range, the upper limit and lower limit of the conductivity mentioned above) in the dosing controller 441. The dosing controller 441 can be automatically controlled according to the parameters, and the main controller 442 can be offline and does not affect the dosing. The dosing controller 441 is located in the oil depot, near the dosing assembly 420, and the wire connected to the dosing assembly 420 is relatively short, and the wire connected to the first conductivity sensor 410, the second conductivity sensor 430, the oil pipeline flowmeter 450, the low liquid level alarm device 470 and / or the conductivity alarm device 460 is relatively short, and the wiring is simple.

[0128] The dosing controller 441 can send signals such as the first conductivity signal, the second conductivity signal, the dosing flow signal and / or the fuel flow signal to the main controller 442, and the main controller 442 can record the signals, generate curves, control the display to display curves and values, monitor the working state of the antistatic agent filling system 400, etc. In some other embodiments, the connection method of one or more of the upstream conductivity sensor 410, the downstream conductivity sensor 430, the oil pipeline flow meter 450, the low liquid level alarm device 470, the conductivity alarm device 460, the dosing pump 422, the solenoid valve 428, the dosing flow meter 424 and the liquid level detection component 4211 to the main controller 442 and the dosing controller 441 can be different from Figure 3 and Figure 4 Embodiment of the invention.

[0129] The antistatic agent filling device provided by the application comprises a storage tank 421, a dosing pump 422, a dosing pipeline 423 and a dosing controller 441. The antistatic agent filling device comprises a dosing assembly 420 and a dosing controller 441. The dosing assembly 420 comprises a storage tank 421, a dosing pump 422 and a dosing pipeline 423. The storage tank 421 is used to store the antistatic agent. The inlet of the dosing pump 422 is connected to the outlet of the storage tank 421, for pumping out the antistatic agent in the storage tank 421. The inlet of the dosing pipeline 423 is connected to the outlet of the dosing pump 422, and the outlet of the dosing pipeline 423 is connected to the oil pipeline 300 for delivering fuel to the oil tank, for delivering the antistatic agent pumped out by the dosing pump 423 to the oil pipeline 300. The dosing controller 441 is connected to the dosing pump 422 and is used to control the dosing pump 422 to pump out the antistatic agent when the conductivity of the fuel without antistatic agent in the oil pipeline 300 exceeds the first conductivity range, so that the conductivity of the fuel with antistatic agent is within the second conductivity range.

[0130] In some embodiments, the dosing pump 422 includes a first dosing pump 4221 and a second dosing pump 4222, and the first dosing pump 4221 and the second dosing pump 4222 are connected in parallel between the storage tank 421 and the inlet of the dosing pipeline 423. The dosing controller 441 is connected with the first dosing pump 4221 and the second dosing pump 4222, and is used to control at least one of the first dosing pump and the second dosing pump to work when the conductivity of the fuel without adding antistatic agent exceeds the first conductivity range. In some embodiments, the maximum flow range of the dosing pump 422 is 0.5 liters / hour-1.5 liters / hour. In some embodiments, the inner diameter range of at least one section of the dosing pipeline 423 is 3mm-5mm. In some embodiments, the inner diameter of at least one section of the dosing pipeline 423 is 4mm.

[0131] In some embodiments, the antistatic agent filling device includes a liquid level detection component 4211 disposed in the storage tank 421, which is used to detect the liquid level of the antistatic agent in the storage tank 421. In some embodiments, the liquid level detection component 4211 includes a tuning fork liquid level sensor disposed in the storage tank 421. In some embodiments, the antistatic agent filling device includes at least one of a flow buffer 425, a one-way valve 427, and a solenoid valve 428 disposed in the dosing pipeline 423. In some embodiments, the antistatic agent filling device includes a filter 426 disposed between the dosing pump 422 and the storage tank 421. In some embodiments, the antistatic agent filling device includes a protective housing 429, and the dosing pump 422 and the dosing controller 441 are disposed in the protective housing 429.

[0132] In some embodiments, the antistatic agent filling device includes an additive flow meter 424 provided on the additive pipeline 423, the additive flow meter 424 is used to detect the flow rate of the antistatic agent pumped out by the additive pump 422, and generate an additive flow signal, and the additive controller 441 is used to control the additive pump 422 to reduce the pumping rate or stop working when the additive flow signal is not lower than the additive flow threshold. In some embodiments, the flow rate of the antistatic agent / the flow rate of the fuel is <2mg / kg.

[0133] In some embodiments, the storage tank 421 is used to store the original liquid of the antistatic agent, and the dosing pump 422 is used to pump out the original liquid of the antistatic agent and inject it into the fuel through the dosing pipeline 423.

[0134] The antistatic agent filling device may further include a low liquid level alarm device 470 and / or a conductivity alarm device 460 .

[0135] The antistatic agent filling device includes a dosing component 420 and a dosing controller 441. The description of the dosing component 420 and the dosing controller 441 can be found in the above related description, and the description of other features of the antistatic agent filling device can be found in the above related description, which will not be repeated here.

[0136] The antistatic agent dosing system 400 includes an antistatic agent filling device, a first conductivity sensor 410, and a second conductivity sensor 430. The first conductivity sensor 410 is located upstream of the antistatic agent filling device, and is used to detect the conductivity of the fuel without antistatic agent added in the oil pipeline 300. The second conductivity sensor 430 is located downstream of the antistatic agent filling device, and is used to detect the conductivity of the fuel with antistatic agent added. The detailed description of the antistatic agent dosing system 400 is as described above, and will not be repeated here.

[0137] Figure 5 FIG. 5 is a flow chart of an embodiment of an antistatic agent filling method 500. The antistatic agent filling method 500 includes steps 501-503.

[0138] In step 501, the conductivity of the fuel without antistatic agent added in the oil pipeline is detected to generate a first conductivity signal. The conductivity of the fuel without antistatic agent added in the oil pipeline can be detected by the first conductivity sensor 410.

[0139] In step 502 , the conductivity of the fuel to which the antistatic agent is added is detected to generate a second conductivity signal. The conductivity of the fuel to which the antistatic agent is added can be detected by a second conductivity sensor 430 located downstream of the first conductivity sensor 410 .

[0140] In step 503, when the first conductivity signal exceeds the first conductivity range, the antistatic agent is controlled to be added so that the second conductivity signal is within the second conductivity range. The addition of the dosing component 420 can be controlled by the controller 440. The method 500 of the embodiment of the present application can realize automatic detection and automatic dosing during the oil transportation process, thereby greatly reducing manpower and electricity, greatly improving production operation efficiency, and the system operates safely, reliably and efficiently, reducing production operation risks, and does not affect the daily oil collection order; and realizes accurate addition, improves fuel quality, and greatly reduces the use of antistatic agents, which greatly reduces costs.

[0141] In some embodiments, the method 500 may include: detecting the flow rate of the antistatic agent and generating an additive flow rate signal; when the additive flow rate signal is not lower than the additive flow rate threshold, controlling to slow down or stop the additive. In some embodiments, the flow rate of the antistatic agent / the flow rate of the fuel oil is less than 2 mg / kg.

[0142] In some embodiments, the method 500 may include: detecting the flow rate of the fuel in the oil pipeline to generate a fuel flow rate signal; and detecting a first conductivity signal when the fuel flow rate signal reaches a flow rate threshold.

[0143] In some embodiments, the method 500 may include: controlling a conductivity alarm device to sound an alarm when the first conductivity signal is not lower than an upper limit value or not higher than a lower limit value.

[0144] In some embodiments, method 500 may include: detecting the liquid level of the stored antistatic agent; and controlling a low liquid level alarm device to sound an alarm when the liquid level of the antistatic agent is lower than a low liquid level threshold.

[0145] The antistatic agent filling system 400 described above can be used to implement the antistatic agent filling method 500. The specific implementation of the steps of the antistatic agent filling method 500 can refer to the description of the antistatic agent filling system 400 above, which will not be repeated here.

[0146] The actions of the antistatic agent filling method 500 are illustrated in the form of modules. Figure 5 The order of the modules shown and the division of the actions in the modules are not limited to the illustrated embodiments. For example, the modules can be performed in different orders; the actions in one module can be combined with the actions in another module, or split into multiple modules. In some embodiments, there can be other steps before, after, or in between the steps of the antistatic agent filling method 500. The embodiments of the method and the embodiments of the device complement each other.

[0147] The method and device provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

[0148] The disclosure of this patent document contains material that is subject to copyright protection. The copyright is reserved by the copyright owner. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure as it exists in the official records and files of the Patent and Trademark Office.

Claims

1. An antistatic agent filling system, characterized in that: include: a first conductivity sensor, disposed in an oil pipeline for conveying fuel to an oil tank, for detecting the conductivity of the fuel in the oil pipeline and generating a first conductivity signal; An oil pipeline flow meter, arranged on the oil pipeline, for detecting the flow of the fuel in the oil pipeline and generating a fuel flow signal; an additive assembly connected to the oil pipeline and located downstream of the first conductivity sensor, the additive assembly being used to add an antistatic agent into the fuel in the oil pipeline; A second conductivity sensor is provided in the oil pipeline and is located downstream of the additive assembly, and is used to detect the conductivity of the fuel added with the antistatic agent and generate a second conductivity signal; a controller connected to the first conductivity sensor, the dosing assembly, the oil pipeline flow meter and the second conductivity sensor, the controller being used to detect the first conductivity signal when the fuel flow signal reaches a flow threshold, and to control the dosing assembly to add the antistatic agent when the first conductivity signal exceeds a first conductivity range, so that the second conductivity signal is within a second conductivity range; The dosing flow meter is used to detect the flow of the antistatic agent output by the dosing component and generate a dosing flow signal. The controller is connected to the dosing flow meter and is used to control the dosing component to slow down or stop dosing when the dosing flow signal is not lower than the dosing flow threshold.

2. The antistatic agent filling system according to claim 1, characterized in that: The dosing assembly includes a dosing tank, a dosing pump and a dosing pipeline, the inlet of the dosing pump is connected to the dosing tank, the inlet of the dosing pipeline is connected to the outlet of the dosing pump, and the outlet of the dosing pipeline is connected to the oil pipeline; The storage tank is used to store the antistatic agent, and the dosing pump is used to pump the antistatic agent in the storage tank into the dosing pipeline and inject it into the oil pipeline through the dosing pipeline; the controller is connected to the dosing pump and is used to control the dosing pump to work when the first conductivity signal exceeds the first conductivity range, so that the second conductivity signal is within the second conductivity range.

3. The antistatic agent filling system according to claim 2, characterized in that: The dosing pump includes a first dosing pump and a second dosing pump, wherein the first dosing pump and the second dosing pump are connected in parallel between the storage tank and the inlet of the dosing pipeline; the controller is connected to the first dosing pump and the second dosing pump, and is used to control at least one of the first dosing pump and the second dosing pump to work when the first conductivity signal exceeds the first conductivity range.

4. The antistatic agent filling system according to claim 2, characterized in that: The maximum flow rate range of the dosing pump is 0.5 liters / hour to 1.5 liters / hour.

5. The antistatic agent filling system according to claim 2, characterized in that: The inner diameter of at least one section of the dosing pipe is in the range of 3 mm to 5 mm.

6. The antistatic agent filling system according to claim 5, characterized in that: The inner diameter of at least one section of the dosing pipe is 4 mm.

7. The antistatic agent filling system according to claim 2, characterized in that: The dosing component includes a liquid level detection component arranged on the storage tank, which is used to detect the liquid level of the antistatic agent in the storage tank.

8. The antistatic agent filling system according to claim 7, characterized in that: The antistatic agent filling system comprises a low liquid level alarm device, and the controller is connected to the liquid level detection component and the low liquid level alarm device, and is used to control the low liquid level alarm device to alarm when the liquid level detection component detects that the liquid level of the antistatic agent in the storage tank is lower than the low liquid level threshold; and / or The liquid level detection component includes a tuning fork liquid level sensor arranged on the storage tank.

9. The antistatic agent filling system according to claim 2, characterized in that: The dosing assembly includes at least one of a flow buffer, a one-way valve and a solenoid valve disposed in the dosing pipeline; and / or The dosing assembly includes a filter disposed between the storage tank and the dosing pump; and / or The antistatic agent filling system comprises a protective shell, and the filling pump is arranged in the protective shell.

10. The antistatic agent filling system according to claim 1, characterized in that: The flow rate of the antistatic agent / the flow rate of the fuel oil is less than 2 mg / kg.

11. The antistatic agent filling system according to any one of claims 1 to 10, characterized in that: The dosing assembly is used to add the original liquid of the antistatic agent into the fuel in the oil pipeline.

12. The antistatic agent filling system according to claim 1, characterized in that: The connection between the dosing assembly and the oil pipeline is closer to the first conductivity sensor than to the second conductivity sensor.

13. The antistatic agent filling system according to claim 1, characterized in that: The oil pipeline flow meter is arranged between the dosing assembly and the second conductivity sensor, and comprises a bent and extended static stirring portion for stirring and mixing the antistatic agent and the fuel when the antistatic agent and the fuel flow through.

14. The antistatic agent filling system according to claim 13, characterized in that: The oil pipeline flow meter comprises a U-type mass flow meter.

15. The antistatic agent filling system according to claim 1, characterized in that: The antistatic agent filling system includes a conductivity alarm device, and the controller is connected to the conductivity alarm device and is used to control the conductivity alarm device to alarm when the first conductivity signal of the first conductivity sensor is not lower than an upper limit value or not higher than a lower limit value.

16. The antistatic agent filling system according to claim 1, characterized in that: The controller comprises a main controller and a dosing controller, wherein the main controller is connected to the first conductivity sensor and the second conductivity sensor, and is used to generate a dosing control signal according to the first conductivity signal and the second conductivity signal, and the dosing controller is connected to the main controller and the dosing component, and is used to control the dosing component in response to the dosing control signal; or The controller comprises an additive controller, which is connected to the first conductivity sensor, the second conductivity sensor, and the additive component, and is used to control the additive component according to the first conductivity signal and the second conductivity signal.

17. An oil storage system, characterized in that: include: Oil tank; Oil pipelines, used to transport fuel to oil tanks; and The antistatic agent filling system according to any one of claims 1 to 16 is connected to the oil pipeline and is used to add antistatic agent to the fuel in the oil pipeline.

18. A method for adding an antistatic agent, characterized in that: include: Detecting the conductivity of the fuel without adding antistatic agent in the oil pipeline to generate a first conductivity signal; detecting the flow of the fuel in the oil pipeline to generate a fuel flow signal, and detecting the first conductivity signal when the fuel flow signal reaches a flow threshold; detecting the conductivity of the fuel to which the antistatic agent is added, and generating a second conductivity signal; and When the first conductivity signal exceeds a first conductivity range, controlling the filling of the antistatic agent to make the second conductivity signal within a second conductivity range; The flow rate of the antistatic agent is detected to generate an agent flow rate signal, and when the agent flow rate signal is not lower than an agent flow rate threshold, the agent addition is controlled to be slowed down or stopped.

19. The antistatic agent filling method according to claim 18, characterized in that: The flow rate of the antistatic agent / the flow rate of the fuel oil is less than 2 mg / kg.

20. The antistatic agent filling method according to claim 18, characterized in that: The method comprises: When the first conductivity signal is not lower than an upper limit value or not higher than a lower limit value, the conductivity alarm device is controlled to sound an alarm.

21. The antistatic agent filling method according to claim 18, characterized in that: The method comprises: detecting the liquid level of the stored antistatic agent; When the liquid level of the antistatic agent is lower than a low liquid level threshold, the low liquid level alarm device is controlled to sound an alarm.

22. An antistatic agent filling system, used to implement the antistatic agent filling method according to any one of claims 18 to 21.

23. An oil storage system, characterized in that: include: Oil tank; Oil pipelines, used to transport fuel to oil tanks; and The antistatic agent filling system as described in claim 22 is connected to the oil pipeline and is used to add antistatic agent to the fuel in the oil pipeline.

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