An isooctane antistatic agent filling device and filling process

Abstract

The present invention relates to the technical field of isooctane antistatic agent filling, and particularly relates to an isooctane antistatic agent filling device and a filling process, including: a blending fuel tank, inside which a liquid level gauge for detecting the liquid level height is provided; a filling module, including a medicine adding unit for injecting an antistatic agent into the blending fuel tank and an interaction unit for respectively injecting and outputting isooctane into the blending fuel tank; a circulation module, including a mixing unit for mixing isooctane and the antistatic agent and a pressure control unit for controlling the air pressure inside the blending fuel tank; a control module, for adjusting the conveying rate of the pneumatic diaphragm pump for the blended isooctane or the injection rate of low-pressure nitrogen, and secondly adjusting the conveying rate of the pneumatic diaphragm pump for the blended isooctane. The present invention realizes the improvement of the electrical conductivity of isooctane products, the reduction of static electricity accumulation, the inability to quantitatively inject the antistatic agent, and the reduction of safety risks during storage, transportation, loading and unloading, and operation.

Description

Technical Field

[0001] The present invention relates to the technical field of isooctane antistatic agent filling, and particularly relates to an isooctane antistatic agent filling device and a filling process. Background Art

[0002] Chinese Patent Application Publication No.: CN114534618A discloses an on-line filling device for improving the accurate amount of antistatic agent, which is composed of a mounting plate, an annular pipeline, a cylindrical cavity, a suction assembly, a driving assembly, and an adjustment assembly. The characteristics are that a group of annular pipelines are arranged on the top of the mounting plate, a group of cylindrical cavities are arranged on both sides inside the annular pipeline, the two groups of cylindrical cavities are both communicated with the inside of the annular pipeline, a group of suction assemblies are arranged inside each group of cylindrical cavities, a group of driving assemblies are arranged between the two groups of cylindrical cavities, and a group of adjustment assemblies are arranged beside the driving assembly. Under the action of the suction assembly, the device can continuously transport the antistatic agent. It can be seen that the on-line filling device for improving the accurate amount of antistatic agent has the problem of unable to quantitatively control the input of the antistatic agent. Summary of the Invention

[0003] Therefore, the present invention provides an isooctane antistatic agent filling device and a filling process to overcome the problems of low conductivity of isooctane products, low safety during storage, transportation, loading and unloading, and inability to quantitatively inject antistatic agents in the prior art.

[0004] To achieve the above object, the present invention provides an isooctane antistatic agent filling device and a filling process, including:

[0005] A blending fuel tank, inside which a liquid level gauge is arranged for detecting the liquid level height;

[0006] A filling module, which is connected to the blending fuel tank, including a dosing unit for injecting an antistatic agent into the blending fuel tank and an interaction unit arranged below the dosing unit for respectively injecting isooctane into the blending fuel tank and outputting the blended isooctane;

[0007] A circulation module, which is connected to the blending fuel tank, including a mixing unit for mixing isooctane and an antistatic agent and a pressure control unit for controlling the air pressure inside the blending fuel tank;

[0008] A control module, which is respectively connected to the filling module and the circulation module, and is used to adjust the conveying rate of the pneumatic diaphragm pump for the blended isooctane or adjust the injection rate of low-pressure nitrogen according to the average mixing time under the corresponding feeding sequence when it is determined that the filling quality of the antistatic agent does not meet the requirements according to the average conductivity of the blended isooctane, and adjust the conveying intermittent frequency of the pneumatic diaphragm pump according to the difference between the total amount of isooctane and antistatic agent added and the output amount of the blended isooctane;

[0009] Among them, the corresponding feeding sequence is: first inject isooctane and antistatic agent in sequence / simultaneously, and then inject low-pressure nitrogen.

[0010] Furthermore, the interaction unit includes:

[0011] An oil injection hole, which is arranged on one side of the blending oil tank close to the chemical addition port;

[0012] A valve assembly, which is arranged below the oil injection hole and is used to control the amount of isooctane injected into the blending oil tank and the amount of blended isooctane output;

[0013] A metering pump, which is connected to the valve assembly and is used to reversely introduce the finished isooctane into the blending oil tank, and quantitatively inject the blended isooctane into the isooctane production line by adjusting the handwheel;

[0014] Among them, the valve assembly includes a first valve, a second valve and a third valve. The first valve is connected to the second valve and is used to control the input of the finished isooctane. The third valve is connected to one end of the metering pump close to the oil injection hole, and it outputs the blended isooctane in the metering pump to the isooctane storage tank together with the first valve and the second valve.

[0015] Furthermore, the pressure control unit includes:

[0016] A pressure gauge, which is arranged above the blending oil tank and is used to monitor the air pressure inside the blending oil tank in real time;

[0017] A pressure reducing valve, which is arranged above the blending oil tank close to the pressure gauge and is used to control the air pressure inside the blending oil tank;

[0018] A low-pressure nitrogen input port valve, which is arranged above the pressure gauge and is used to adjust the air pressure inside the blending oil tank;

[0019] A breathing port, which is arranged on one side of the blending oil tank close to the pressure gauge and is used to change the air pressure inside the blending oil tank;

[0020] Among them, when the air pressure in the blending oil tank is higher than the standard atmospheric pressure, the breathing port is opened to release gas so that the blending oil tank and the outside achieve dynamic balance of the internal and external air pressures.

[0021] Furthermore, the control module is connected to the low-pressure nitrogen input port valve and is used to determine the feeding sequence according to the average mixing duration;

[0022] Among them, if the average mixing duration is greater than the preset mixing duration, the control module determines that the degree of air entry during the chemical addition process of the antistatic agent does not meet the requirements, and adjusts the opening degree of the low-pressure nitrogen input port valve to reduce the injection rate of low-pressure nitrogen.

[0023] Further, the average mixing duration is the ratio of the sum of the mixing durations of isooctane and the antistatic agent for several times to the total number of mixing times.

[0024] Further, the mixing unit includes:

[0025] A pneumatic diaphragm pump, which is arranged on one side of the blending tank far from the metering pump, for mixing the finished isooctane and the antistatic agent;

[0026] A fourth valve, which is arranged below the blending tank near the pneumatic diaphragm pump, for transporting the isooctane antistatic agent mixed liquid in the blending tank into the pneumatic diaphragm pump;

[0027] A fifth valve, which is arranged below the blending tank near the metering pump, for transporting the isooctane antistatic agent mixed liquid in the blending tank into the metering pump;

[0028] A sixth valve, which is connected to the pneumatic diaphragm pump, for controlling the circulating flow rate of the blended isooctane into the blending tank;

[0029] A seventh valve, which is arranged in the blending tank, for inputting the blended isooctane into the blending tank when it is connected to the sixth valve, and for inputting the finished isooctane into the blending tank when it is connected to the second valve.

[0030] Further, an electrical conductivity meter for detecting the electrical conductivity of the blended isooctane is arranged above the isooctane storage tank, and the control module is respectively connected to the electrical conductivity meter and the pneumatic diaphragm pump, for obtaining the electrical conductivity of the blended isooctane detected by the electrical conductivity meter, and adjusting the conveying rate of the blended isooctane by the pneumatic diaphragm pump according to the average electrical conductivity of the blended isooctane;

[0031] Wherein, if the average electrical conductivity of the blended isooctane is less than the preset average electrical conductivity, the control module determines that the rate of the pneumatic diaphragm pump does not meet the requirements, determines that heat increases during the circulation process resulting in partial volatilization of the oil into gas, and reduces the conveying rate of the blended isooctane by the pneumatic diaphragm pump;

[0032] If the output amount of the blended isooctane is less than the total amount of the input of the finished isooctane and the antistatic agent after reducing the conveying rate of the blended isooctane by the pneumatic diaphragm pump, it is determined for the second time that the finished isooctane and the antistatic agent are lost during the operation of the device, and the conveying intermittent frequency of the pneumatic diaphragm pump is reduced.

[0033] Further, the average electrical conductivity of the blended isooctane is the ratio of the sum of the electrical conductivities of the output blended isooctane for several times to the total number of measurement times; the output amount of the blended isooctane is the ratio of the sum of the volumes measured by the Float-11A standard type float level gauge for several times to the total number of measurement times.

[0034] Among them, in the "Float-11A Standard Float Level Gauge", "Float" means "float" or "float on the surface", and here it indicates that the level gauge works based on the float principle, that is, the liquid level is measured by the up and down floating of the float in the liquid; "11A" refers to the specific model number of this series of products.

[0035] Furthermore, the reduction amplitude of the circulation rate of the pneumatic diaphragm pump is determined by the difference between the preset average conductivity and the average conductivity of the isooctane blend, and the increase amplitude of the delivery intermittent frequency of the pneumatic diaphragm pump is determined by the loss amount of the isooctane blend.

[0036] The present invention also provides an isooctane antistatic agent filling process, including:

[0037] Inject the antistatic agent and isooctane into the blending tank in sequence / simultaneously;

[0038] Inject low-pressure nitrogen into the blending tank to remove the impurity gas in the blending tank;

[0039] Detect the liquid level height of the mixture of isooctane and antistatic agent in the blending tank;

[0040] Start the pneumatic diaphragm pump and the metering pump in sequence to mix the isooctane and the antistatic agent to output the isooctane blend and quantitatively transport the isooctane blend to the isooctane production line;

[0041] Collect the conductivity of the detected isooctane blend several times to calculate the average conductivity of the isooctane blend;

[0042] Judge whether the filling quality of the antistatic agent meets the requirements according to the average conductivity;

[0043] If it is determined that the filling quality does not meet the requirements, adjust the delivery rate of the pneumatic diaphragm pump for the isooctane blend or adjust the injection rate of the low-pressure nitrogen according to the average mixing time in the corresponding feeding sequence;

[0044] Secondarily adjust the delivery intermittent frequency of the pneumatic diaphragm pump according to the difference between the total amount of the finished isooctane and the antistatic agent added and the output amount of the isooctane blend.

[0045] Compared with the prior art, the beneficial effects of the present invention are as follows. By setting a blending fuel tank, a filling module, a circulation module and a control module, when injecting isooctane and antistatic agent into the blending fuel tank, the liquid level gauge arranged inside the blending fuel tank monitors the liquid level height of the mixed liquid inside the blending fuel tank, thus realizing precise monitoring of the liquid level change inside the blending fuel tank; when injecting the antistatic agent into the blending fuel tank, by setting a chemical dosing unit and an interaction unit in the filling module, the problem of uncontrollable input and output oil volume is overcome, so that the entire circulation system coordinates to control the inflow and outflow of isooctane; during the operation of the isooctane antistatic agent filling device, by setting a control module, the problems of liquid evaporation caused by frictional heat generation and residual liquid in the conveying pipeline are overcome, reducing the loss of the finished isooctane raw material.

[0046] Further, by setting a chemical dosing port and a chemical dosing control valve, the device of the present invention overcomes the problem of uncontrollable injection amount of the antistatic agent, realizes quantitative injection of the antistatic agent, and makes the conductivity control of the blended isooctane stable.

[0047] Further, the device of the present invention overcomes the problem of uncontrollable injection amount of the finished isooctane, as well as the problems of introduction and output before and after mixing of the finished isooctane and the antistatic agent, by setting an interaction unit composed of an oil injection hole, a first valve, a second valve, a third valve and a metering pump, and realizes coordinated control of the inflow and outflow of the blended isooctane circulation system.

[0048] Further, by setting a pressure control unit composed of a pressure gauge, a pressure reducing valve, a low-pressure nitrogen input port valve and a breathing port, the device of the present invention overcomes the problem of unstable product quality caused by unstable internal air pressure during the operation of the isooctane antistatic agent filling device, and realizes real-time monitoring of the internal air pressure of the isooctane antistatic agent filling device.

[0049] Further, by connecting the control module to the low-pressure nitrogen input port valve, the device of the present invention overcomes the problems of non-compliant air entry degree during chemical dosing and oil injection and short service life of the pneumatic diaphragm pump, determines the injection methods of isooctane, antistatic agent and low-pressure nitrogen, and improves the stability of product quality.

[0050] Further, by setting a mixing unit composed of a pneumatic diaphragm pump, a fourth valve, a fifth valve, a sixth valve and a seventh valve, the device of the present invention overcomes the problem of uneven mixing of isooctane and the antistatic agent and improves the mixing efficiency.

[0051] Further, by setting a liquid level gauge, the device of the present invention overcomes the problem of unclear monitoring of the liquid level height and realizes precise control of the liquid level. Brief Description of the Drawings

[0052] Figure 1 This is the overall structural schematic diagram of the isooctane antistatic agent filling device according to an embodiment of the present invention;

[0053] Figure 2 This is the structural block diagram of the isooctane antistatic agent filling device according to an embodiment of the present invention;

[0054] Figure 3 This is the logic flowchart of the isooctane antistatic agent filling device according to an embodiment of the present invention;

[0055] Figure 4 This is the filling process flowchart of the isooctane antistatic agent filling device according to an embodiment of the present invention.

[0056] The reference numerals are as follows: 1 - blending oil tank, 2 - quick-opening manhole, 3 - valve of low-pressure nitrogen input port, 4 - pressure reducing valve, 5 - pressure gauge, 6 - chemical addition port, 7 - chemical addition control valve, 8 - breathing port, 9 - eighth valve, 10 - liquid level gauge, 11 - ninth valve, 12 - valve of blending oil tank, 13 - first valve, 14 - second valve, 15 - valve connecting to the outside, 16 - third valve, 17 - fifth valve, 18 - sixth valve, 19 - pneumatic diaphragm pump, 20 - fourth valve, 21 - adjusting handwheel, 22 - seventh valve, 23 - metering pump, 24 - isooctane storage tank, 25 - conductivity meter. Specific Embodiments

[0057] In order to make the objectives and advantages of the present invention clearer and more understandable, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0058] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0059] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0060] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, they are respectively the overall structural schematic diagram of an isooctane antistatic agent filling device according to an embodiment of the present invention, the structural block diagram of an isooctane antistatic agent filling device according to an embodiment of the present invention, the logic flow chart of an isooctane antistatic agent filling device according to an embodiment of the present invention, and the filling process flow chart of an isooctane antistatic agent filling device according to an embodiment of the present invention; An isooctane antistatic agent filling device of the present invention includes:

[0061] A blending fuel tank 1, inside which a liquid level gauge 10 for detecting the liquid level height is provided;

[0062] A filling module, which is connected to the blending fuel tank 1, includes a dosing unit for injecting an antistatic agent into the blending fuel tank 1 and an interaction unit provided below the dosing unit for respectively injecting finished isooctane into the blending fuel tank 1 and outputting blended isooctane;

[0063] Among them, the blended isooctane is the isooctane after mixing the finished isooctane and the antistatic agent. The difference between the finished isooctane and the blended isooctane is that the conductivity of the finished isooctane is less than that of the blended isooctane;

[0064] A circulation module, which is connected to the blending fuel tank 1, includes a mixing unit for mixing isooctane and the antistatic agent and a pressure control unit for controlling the air pressure inside the blending fuel tank 1;

[0065] A control module, which is respectively connected to the filling module and the circulation module, is used to adjust the conveying rate of the pneumatic diaphragm pump 19 for the blended isooctane when it is determined that the filling quality of the antistatic agent does not meet the requirements according to the average conductivity of the blended isooctane, or adjust the injection rate of low-pressure nitrogen according to the average mixing duration under the corresponding feeding sequence, and secondly adjust the conveying intermittent frequency of the pneumatic diaphragm pump 19 according to the difference between the total amount of isooctane and the antistatic agent added and the output amount of the blended isooctane;

[0066] Among them, the corresponding feeding sequence is: first inject isooctane and the antistatic agent in sequence / simultaneously, and then inject low-pressure nitrogen.

[0067] Specifically, the dosing unit includes:

[0068] A dosing port 6, which is provided above the blending fuel tank 1;

[0069] A dosing control valve 7, which is provided below the dosing port 6 and is used to control the dosing amount of the antistatic agent.

[0070] Specifically, the interaction unit includes:

[0071] An oil injection hole, which is provided on one side of the blending fuel tank 1 close to the dosing port 6;

[0072] A valve assembly is provided below the oil injection hole to control the amount of isooctane injected into the blending tank and the amount of blended isooctane output.

[0073] A metering pump 23 is connected to the valve assembly to reverse-introduce finished isooctane into the blending tank 1 and, by adjusting the handwheel 21, quantitatively inject the blended isooctane into the isooctane storage tank.

[0074] Among them, the valve assembly includes a first valve 13, a second valve 14, and a third valve 16. The first valve 13 is connected to the second valve 14 to control the input amount of finished isooctane. The third valve 16 is connected to one end of the metering pump 23 close to the oil injection hole, and together with the first valve 13 and the second valve 14, outputs the blended isooctane in the metering pump 23 to the isooctane storage tank 24.

[0075] It can be understood that the relative positional relationship of the oil injection hole, the metering pump 23, the first valve 13, the second valve 14, and the third valve 16 set in the interaction unit in the embodiment of the present invention is a preferred embodiment of the present invention. Those skilled in the art can understand that as long as the components of the above interaction unit cooperate with each other to achieve the injection of finished isooctane and the output of blended isooctane, the materials of the first valve, the second valve, and the third valve are not limited.

[0076] Specifically, the pressure control unit includes:

[0077] A pressure gauge 5 is provided above the blending tank 1 to monitor the air pressure inside the blending tank 1 in real time.

[0078] A pressure reducing valve 4 is provided above the blending tank 1 near the pressure gauge 5 to control the air pressure inside the blending tank 1.

[0079] A low-pressure nitrogen input port valve 3 is provided above the pressure gauge 5 to adjust the air pressure inside the blending tank 1.

[0080] A breather port 8 is provided on one side of the blending tank 1 near the pressure gauge 5 to change the air pressure inside the blending tank 1.

[0081] Among them, when the air pressure in the blending tank 1 is higher than the standard atmospheric pressure, the breather port 8 is opened to release gas to achieve dynamic balance of the internal and external air pressures between the blending tank 1 and the outside.

[0082] It is understandable that the relative positional relationship among the pressure gauge 5, pressure reducing valve 4, low-pressure nitrogen input port valve 3, and breathing port 8 set in the pressure control unit in the embodiments of the present invention is a preferred embodiment of the present invention. Those skilled in the art can understand that as long as the component structures of the above pressure control unit cooperate with each other to achieve dynamic balance of the internal and external air pressures, the type of the pressure gauge 5, the material of the pressure reducing valve 4, the material of the low-pressure nitrogen input port valve 3, and the material of the breathing port 8 are not limited.

[0083] Specifically, the control module is connected to the low-pressure nitrogen input port valve 3 to determine the feeding sequence according to the average mixing duration.

[0084] Among them, if the average mixing duration is greater than the preset mixing duration, the control module determines that the air entry degree during the dosing process of the antistatic agent does not meet the requirements, and adjusts the opening degree of the low-pressure nitrogen input port valve 3 to reduce the injection rate of low-pressure nitrogen.

[0085] In practice, the general value range of the preset mixing duration is [35s, 55s];

[0086] Preferably, the preferred embodiment of the preset mixing duration is 42s, and 2.2 MPa of nitrogen needs to be injected. At this time, the low-pressure nitrogen injection rate is ;

[0087] In one or more embodiments, when the average mixing duration exceeds the preset mixing duration by 2s each time, the injection rate of low-pressure nitrogen is reduced to 0.92 times the current injection rate of low-pressure nitrogen. When the average mixing duration reaches 50s, for every 0.5s exceeded, the injection rate of low-pressure nitrogen is reduced ;

[0088] For example, when the average mixing duration is 44s, the value of the reduced injection rate of low-pressure nitrogen is ;

[0089] Again, for example, when the average mixing duration is 50.5s, the value of the reduced injection rate of low-pressure nitrogen is .

[0090] Specifically, the average mixing duration is the ratio of the sum of the mixing durations of isooctane and antistatic agent for several times to the total number of mixing times.

[0091] Specifically, the mixing unit includes:

[0092] A pneumatic diaphragm pump 19, which is arranged on one side of the blending tank 1 far from the metering pump 23, and is used to mix the finished isooctane and the antistatic agent.

[0093] The fourth valve 20 is arranged below the blending oil tank 1 near the pneumatic diaphragm pump 19 for transporting the isooctane antistatic agent mixed liquid in the blending oil tank 1 into the pneumatic diaphragm pump 19;

[0094] The fifth valve 17 is arranged below the blending oil tank 1 near the metering pump 23 for transporting the isooctane antistatic agent mixed liquid in the blending oil tank 1 into the metering pump 23;

[0095] The sixth valve 18 is connected to the pneumatic diaphragm pump 19 for controlling the circulating flow rate of the blended isooctane into the blending oil tank 1;

[0096] The seventh valve 22 is arranged in the blending oil tank 1 for inputting the blended isooctane into the blending oil tank 1 when it is connected to the sixth valve 18, and for inputting the finished isooctane into the blending oil tank 1 when it is connected to the second valve 14.

[0097] Specifically, an electrical conductivity meter 25 for detecting the electrical conductivity of the blended isooctane is arranged above the isooctane storage tank 24. The control module is respectively connected to the electrical conductivity meter 25 and the pneumatic diaphragm pump 19 for obtaining the electrical conductivity of the blended isooctane detected by the electrical conductivity meter 25 and adjusting the conveying rate of the blended isooctane by the pneumatic diaphragm pump 19 according to the average electrical conductivity of the blended isooctane;

[0098] Wherein, if the average electrical conductivity of the blended isooctane is less than the preset average electrical conductivity, the control module determines that the rate of the pneumatic diaphragm pump 19 does not meet the requirements, determines that heat increases during the circulation process resulting in partial volatilization of the oil into gas, and reduces the conveying rate of the blended isooctane by the pneumatic diaphragm pump 19;

[0099] In implementation, the electrical conductivity meter 25 is used to measure the electrical conductivity of the blended isooctane. The blended isooctane is input into the isooctane storage tank 24, and the electrical conductivity meter 25 is connected above the isooctane storage tank 24.

[0100] In implementation, the general value range of the preset average electrical conductivity is [45 PS / M, 55 PS / M];

[0101] Preferably, the optimal value of the preset average electrical conductivity is 50 PS / M;

[0102] In one or more embodiments, when the average electrical conductivity exceeds the preset average electrical conductivity by 5 PS / M each time, the conveying rate of the blended isooctane by the pneumatic diaphragm pump 19 is reduced to 0.9 times the current conveying rate of the blended isooctane by the pneumatic diaphragm pump 19. For example, when the average electrical conductivity is 60 PS / M and the current conveying rate of the blended isooctane by the pneumatic diaphragm pump 19 is 2900 ml / min, the reduced conveying rate of the blended isooctane by the pneumatic diaphragm pump 19 is: 。

[0103] Among them, if the delivery rate of the pneumatic diaphragm pump for the blended isooctane is reduced and the output of the blended isooctane is less than the total amount of isooctane and antistatic agent input, it is determined secondarily that the isooctane and the antistatic agent are lost during the operation of the device, and the delivery intermittent frequency of the pneumatic diaphragm pump 19 is reduced.

[0104] Specifically, the average conductivity of the blended isooctane is the ratio of the sum of the conductivities of the blended isooctane output several times to the total number of measurements; the output of the blended isooctane is the ratio of the sum of the volumes measured by the Float-11A standard float level gauge several times to the total number of measurements.

[0105] Specifically, the reduction amplitude of the delivery rate of the pneumatic diaphragm pump 19 for the blended isooctane is determined by the difference between the preset average conductivity and the average conductivity of the blended isooctane, and the reduction amplitude of the delivery intermittent frequency of the pneumatic diaphragm pump 19 is determined by the loss amount of the blended isooctane;

[0106] Among them, the loss amount of the blended isooctane is the difference between the output of the blended isooctane and the total amount of isooctane and antistatic agent input.

[0107] In implementation, a quantitative amount of finished isooctane and a quantitative amount of antistatic agent are input into the blending fuel tank 1 after measuring the liquid level by the Float-11A standard float level gauge 10. After the device operation ends, the liquid level of the blended isooctane is measured again by the Float-11A standard float level gauge 10, and the loss is determined by comparing the difference between the two.

[0108] Optionally, the general value range of the preset loss amount of the standard blended isooctane can be [70mm, 80mm];

[0109] Preferably, the preferred embodiment of the preset loss amount of the standard blended isooctane is 75mm;

[0110] In one or more embodiments, when the loss amount of the blended isooctane exceeds the preset loss amount of the blended isooctane by 11mm each time, the delivery intermittent frequency of the pneumatic diaphragm pump 19 is reduced by 1s compared to the current delivery intermittent frequency of the pneumatic diaphragm pump 19. For example, before the device operation, the liquid level of the finished isooctane is measured to be 3287mm, the liquid level of the antistatic agent is measured to be 1833mm, and after the device operation ends, the liquid level of the blended isooctane is measured to be 5034mm, losing 3287 + 1833 - 5034 = 86mm of liquid. It is necessary to reduce the delivery intermittent frequency of the pneumatic diaphragm pump 19. The current delivery intermittent frequency of the pneumatic diaphragm pump 19 is 10s, and the increased delivery intermittent frequency of the pneumatic diaphragm pump 19 is: 10 - [(86 - 75) / 11] = 9s.

[0111] Specifically, a filling process of an isooctane antistatic agent filling device includes:

[0112] Step S1, injecting the antistatic agent and isooctane into the blending fuel tank in sequence / simultaneously;

[0113] Step S2, injecting low-pressure nitrogen into the blending fuel tank to remove impurity gases in the blending fuel tank;

[0114] Step S3, detecting the liquid level height of the mixed liquid of isooctane and antistatic agent in the blending fuel tank;

[0115] Step S4, starting the pneumatic diaphragm pump and metering pump in sequence to mix the isooctane and the antistatic agent to output blended isooctane and quantitatively transport the blended isooctane to the isooctane production line;

[0116] Step S5, collecting the conductivity of the detected blended isooctane several times to calculate the average conductivity of the blended isooctane;

[0117] Step S6, determining whether the filling quality of the antistatic agent meets the requirements according to the average conductivity;

[0118] Step S7, if it is determined that the filling quality does not meet the requirements, adjust the conveying rate of the pneumatic diaphragm pump for the blended isooctane or adjust the injection rate of the low-pressure nitrogen according to the average mixing duration in the corresponding feeding sequence;

[0119] Step S8, secondarily adjusting the conveying intermittent frequency of the pneumatic diaphragm pump according to the difference between the total amount of isooctane and antistatic agent added and the output amount of the blended isooctane.

[0120] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An isooctane antistatic agent filling device, characterized in that: include: A blending oil tank, inside of which is provided a liquid level gauge for detecting the liquid level; A filling module, which is connected to the blending oil tank, comprises a dosing unit for injecting antistatic agent into the blending oil tank and an interactive unit arranged below the dosing unit for respectively injecting isooctane into the blending oil tank and outputting the blending isooctane; the dosing unit comprises: A drug adding port, which is arranged above the blending oil tank; A dosing control valve is arranged below the dosing port to control the dosing amount of the antistatic agent; The interaction unit comprises: An oil filling hole is arranged on one side of the blending oil tank close to the dosing port; A valve assembly, which is arranged below the oil filling hole and is used to control the amount of isooctane injected into the blending oil tank and the amount of blending isooctane output; A metering pump connected to the valve assembly for reversely introducing the finished isooctane into the blending tank, and quantitatively injecting the blended isooctane into the isooctane production line by adjusting the hand wheel; A circulation module connected to the blending oil tank, comprising a mixing unit for mixing isooctane and an antistatic agent and a pressure control unit for controlling the air pressure in the blending oil tank; the mixing unit comprises: a pneumatic diaphragm pump, which is arranged on a side of the blending oil tank away from the metering pump, for mixing the finished isooctane with the antistatic agent; A control module, which is connected to the filling module and the circulation module respectively, and is used to adjust the delivery rate of the pneumatic diaphragm pump to the blended isooctane or adjust the injection rate of the low-pressure nitrogen according to the average mixing time under the corresponding feeding sequence when it is determined that the filling quality of the antistatic agent does not meet the requirements according to the average conductivity of the blended isooctane, and to adjust the delivery intermittent frequency of the pneumatic diaphragm pump according to the difference between the total amount of isooctane and the antistatic agent added and the output amount of the blended isooctane; The corresponding feeding sequence is: first inject isooctane and antistatic agent in sequence / simultaneously, and then inject low-pressure nitrogen.

2. The isooctane antistatic agent filling device according to claim 1, characterized in that: The valve assembly includes a first valve, a second valve and a third valve. The first valve is connected to the second valve to control the input of finished isooctane. The third valve is connected to one end of the metering pump close to the oil filling hole. The third valve, together with the first valve and the second valve, outputs the blended isooctane in the metering pump to the isooctane storage tank.

3. The isooctane antistatic agent filling device according to claim 2, characterized in that: The pressure control unit comprises: A pressure gauge, which is arranged above the blending oil tank and is used to monitor the air pressure inside the blending oil tank in real time; A pressure reducing valve, which is arranged above the blending oil tank near the pressure gauge, and is used to control the air pressure inside the blending oil tank; A low-pressure nitrogen inlet valve, which is arranged above the pressure gauge and is used to adjust the gas pressure inside the blending oil tank; A breathing port, which is arranged on one side of the blending oil tank close to the pressure gauge, and is used to change the air pressure inside the blending oil tank; Among them, when the air pressure in the blending oil tank is higher than the standard atmospheric pressure, the breathing port is opened to release the gas to achieve a dynamic balance between the internal and external air pressures of the blending oil tank and the outside world.

4. The isooctane antistatic agent filling device according to claim 3, characterized in that: The control module is connected to the low-pressure nitrogen inlet valve to determine the feeding sequence according to the average mixing time; Among them, if the average mixing time is greater than the preset mixing time, the control module determines that the degree of air entry during the antistatic agent dosing process does not meet the requirements, and adjusts the opening of the low-pressure nitrogen inlet valve to reduce the injection rate of the low-pressure nitrogen.

5. The isooctane antistatic agent filling device according to claim 4, characterized in that: The average mixing time is the ratio of the sum of the mixing times of several times of isooctane and the antistatic agent to the total number of mixing times.

6. The isooctane antistatic agent filling device according to claim 5, characterized in that: The mixing unit comprises: a fourth valve, which is arranged below the blending oil tank near the pneumatic diaphragm pump and is used to transport the isooctane antistatic agent mixed liquid in the blending oil tank to the pneumatic diaphragm pump; a fifth valve, which is disposed below the blending oil tank near the metering pump and is used to transport the isooctane antistatic agent mixed liquid in the blending oil tank to the metering pump; a sixth valve connected to the pneumatic diaphragm pump to control the circulation flow of the blended isooctane into the blending tank; The seventh valve is arranged in the blending tank and is used for inputting blending isooctane into the blending tank when it is connected to the sixth valve, and is used for inputting finished isooctane into the blending tank when it is connected to the second valve.

7. The isooctane antistatic agent filling device according to claim 6, characterized in that: A conductivity meter for detecting the conductivity of the blended isooctane is connected above the isooctane storage tank, and the control module is connected to the conductivity meter and the pneumatic diaphragm pump respectively to obtain the conductivity of the blended isooctane detected by the conductivity meter, and adjust the delivery rate of the pneumatic diaphragm pump to the blended isooctane according to the average conductivity of the blended isooctane; Wherein, if the average conductivity of the blended isooctane is less than the preset average conductivity, the control module determines that the rate of the pneumatic diaphragm pump does not meet the requirement, determines that the increase in heat during the circulation process causes the oil to partially volatilize into gas, and reduces the delivery rate of the pneumatic diaphragm pump for the blended isooctane; If after reducing the delivery rate of the pneumatic diaphragm pump for the blended isooctane, the output of the blended isooctane is less than the total amount of isooctane and antistatic agent input, it is secondly determined that isooctane and antistatic agent are lost during the operation of the isooctane antistatic agent filling device, and the delivery intermittent frequency of the pneumatic diaphragm pump is increased.

8. The isooctane antistatic agent filling device according to claim 7, characterized in that: The average conductivity of the blended isooctane is the ratio of the sum of the conductivity of the blended isooctane output several times to the total number of measurements; the output volume of the blended isooctane is the ratio of the sum of the volumes measured by the Float-11A standard float level meter several times to the total number of measurements.

9. The isooctane antistatic agent filling device according to claim 8, characterized in that: The reduction range of the circulation rate of the pneumatic diaphragm pump is determined by the difference between the preset average conductivity and the average conductivity of the blended isooctane, and the reduction range of the intermittent delivery frequency of the pneumatic diaphragm pump is determined by the loss of the blended isooctane.

10. A filling process applied to the isooctane antistatic agent filling device according to any one of claims 1 to 9, characterized in that: include: Inject antistatic agent and isooctane into the blending tank sequentially / simultaneously; Injecting low-pressure nitrogen into the blending oil tank to remove impurity gases in the blending oil tank; Detecting the liquid level of the mixed liquid of isooctane and antistatic agent in the blending oil tank; sequentially starting a pneumatic diaphragm pump and a metering pump to mix the isooctane and the antistatic agent to output blended isooctane and quantitatively delivering the blended isooctane to the isooctane production line; Collecting the conductivity of the blended isooctane detected several times to calculate the average conductivity of the blended isooctane; Determining whether the filling quality of the antistatic agent meets the requirements according to the average conductivity; If it is determined that the filling quality does not meet the requirements, the delivery rate of the pneumatic diaphragm pump for blending isooctane is adjusted, or the injection rate of the low-pressure nitrogen is adjusted according to the average mixing time in the corresponding addition sequence; The intermittent delivery frequency of the pneumatic diaphragm pump is secondarily adjusted according to the difference between the total amount of isooctane and antistatic agent added and the output amount of the blended isooctane.

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