Optimization auxiliary system and method for static elimination equipment of oil pipeline

Abstract

The invention discloses an optimization auxiliary system for oil pipeline static electricity elimination equipment, which comprises static electricity elimination equipment and static electricity detection equipment, and is characterized in that the static electricity detection equipment is located at a downstream position and comprises a conductive pipeline, a static electricity measurement connecting part, a static electricity measurement device, a static electricity information processing device and a static electricity information display device; the electrostatic information processing device is further electrically connected to the flow velocity measuring device, the electrostatic measuring connecting part is used for measuring the oil product electrostatic current of the conductive pipeline, and the electrostatic information processing device is used for generating optimization auxiliary information, corresponding to the flow velocity information, of the oil product electrostatic current changing along with time. And the electrostatic information display device is used for displaying the optimization auxiliary information to assist in optimizing the electrostatic elimination equipment. According to the system, the parameter structure of the electrostatic eliminator can be adjusted and optimized according to the online real-time detection result so as to obtain electrostatic elimination equipment which corresponds to the flow velocity and has a better electrostatic elimination effect. The invention further discloses an optimization auxiliary method of the oil pipeline static elimination equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of oil static elimination, and in particular relates to an optimization auxiliary system and method for oil pipeline static elimination equipment. Background Art

[0002] During the oil transportation process, static electricity is very likely to be generated when the oil flows, filters, mixes, sprays, injects, flushes, fills, shakes, etc. When the static electricity accumulates beyond a certain amount, static electricity discharge may occur. If the energy of static electricity discharge exceeds the minimum ignition energy of the explosive mixed gas, static electricity ignition accidents may occur, especially when there are a large number of pumps, filters and valves in the transportation system. These components further aggravate the generation of static electricity.

[0003] In the prior art, static electricity is generally eliminated by adding antistatic additives to oil products or installing static eliminators. However, the static elimination effect of adding antistatic agents may be affected by transportation conditions and storage facilities, and antistatic agents may pollute the environment. In addition, the actual static elimination effect after installing static eliminators has certain limitations. Specifically, the elimination efficiency of static eliminators is related to the flow state of the fluid in the pipeline. That is to say, static eliminators can only achieve the effect of eliminating static electricity within a certain flow velocity range. When the oil flow rate is relatively fast, this static eliminator cannot eliminate static electricity and may even generate more static electricity. In this case, it has the opposite effect. It can be seen that the existing static eliminators cannot achieve the function of static elimination in all cases. Moreover, the existing static eliminators are mostly single self-inductive components, and their working characteristics and whether they can achieve good static elimination effects for the required working conditions of industrial oil pipelines are unknown.

[0004] The electrostatic detection in the prior art mainly adopts an offline method. Specifically, when performing electrostatic detection on an oil pipeline system, the oil needs to be taken out from the pipeline system to be tested, and a charge measuring device such as a Faraday cup is used to detect whether the oil is charged and the specific amount of charge. This offline method can be used to achieve electrostatic detection of the pipeline system, but it is not suitable for pipeline systems that are in continuous working state. After all, it cannot measure the electrostatic charge during the flow process, and offline detection will affect the performance of the pipeline system.

[0005] Therefore, a technical problem that needs to be solved urgently is how to realize online real-time detection of the electrostatic elimination effect when oil flows in the oil pipeline, and adjust and optimize the parameter structure of the electrostatic eliminator according to the online real-time detection results to obtain an electrostatic elimination device with better electrostatic elimination effect. Summary of the invention

[0006] In order to solve the above problems, the present invention provides an optimization auxiliary system and method for oil pipeline static elimination equipment, which can realize online real-time detection of the static elimination effect when the oil flows in the oil pipeline, and adjust and optimize the parameter structure of the static eliminator according to the online real-time detection results to obtain a static elimination device with better static elimination effect corresponding to the flow rate, which can effectively eliminate static electricity in the oil under any flow rate conditions and avoid dangerous situations caused by excessive accumulation of static electricity in the oil pipeline.

[0007] The present invention provides an optimization auxiliary system for static electricity elimination equipment of an oil pipeline, comprising a static electricity elimination equipment and a static electricity detection equipment interconnected by a pipeline, wherein the static electricity detection equipment is located downstream of the static electricity elimination equipment in the oil transportation direction, and the static electricity detection equipment comprises a conductive pipeline, a static electricity measurement connection part sleeved on the outer periphery of the conductive pipeline, and a static electricity measurement device, a static electricity information processing device and a static electricity information display device electrically connected to the static electricity measurement connection part in sequence, the static electricity information processing device is also electrically connected to a flow rate measurement device to obtain flow rate information, the static electricity measurement connection part is used to measure the static electricity current of the oil in the conductive pipeline, the static electricity information processing device is used to generate optimization auxiliary information of the static electricity current of the oil over time corresponding to the flow rate information based on the information of the static electricity current of the oil over time and the flow rate information, and the static electricity information display device is used to display the optimization auxiliary information to assist in optimizing the static electricity elimination equipment.

[0008] Preferably, in the above-mentioned optimization auxiliary system of the oil pipeline static elimination equipment, the static elimination equipment includes a conductive outer tube, an insulating inner tube sleeved inside the conductive outer tube, and an anti-static needle, the anti-static needle passes through the conductive outer tube and the insulating inner tube in sequence, and its tip contacts the oil inside the insulating inner tube, and its tail end contacts the conductive outer tube, and is used to collect the charges induced by the conductive outer tube with opposite polarity to the static charges in the oil and inject them into the oil to achieve the elimination of static charges.

[0009] Preferably, in the above-mentioned optimization auxiliary system of the oil pipeline static elimination equipment, the two ends of the conductive outer tube are respectively a first flange and a second flange, the two ends of the conductive pipe are respectively a third flange and a fourth flange, the conductive outer tube is connected to the oil pipeline through the first flange, the conductive outer tube is connected to the third flange through the second flange by means of insulating bolts to achieve connection with the conductive pipe, and the conductive pipe is connected to the oil pipeline through the fourth flange by means of insulating bolts.

[0010] Preferably, in the above-mentioned optimization auxiliary system of the oil pipeline static elimination equipment, the conductive pipeline is a stainless steel pipeline, and the static measurement connection part is an static monitoring sensor.

[0011] Preferably, in the optimization auxiliary system of the above-mentioned oil pipeline static elimination equipment, the static electricity measuring device is an electrostatic meter, and the flow rate measuring device is a flow meter arranged inside the conductive pipeline and in direct contact with the oil product.

[0012] Preferably, in the above-mentioned optimization auxiliary system for the oil pipeline static elimination equipment, the static information processing device includes a high-speed acquisition card and data processing software, and the static information display device is a display screen.

[0013] In an optimization auxiliary method for an oil pipeline static elimination device provided by the present invention, an optimization auxiliary system for an oil pipeline static elimination device as described in any one of the above items is used, comprising:

[0014] Connecting the static electricity elimination device and the static electricity detection device to the oil pipeline, and placing the static electricity detection device downstream of the static electricity elimination device in the oil delivery direction;

[0015] While transporting the oil, the static electricity in the oil is eliminated by using the static electricity elimination device;

[0016] The electrostatic current of the oil in the conductive pipe is measured by using the electrostatic measuring device, and the flow velocity information of the oil is measured by using the flow velocity measuring device;

[0017] Using the electrostatic information processing device to generate optimized auxiliary information of the electrostatic current of the oil product changing with time corresponding to the flow rate information;

[0018] The optimization auxiliary information is displayed by using the static information display device, and when the static current of the oil product is not higher than a preset threshold, the static elimination device is determined to be a static elimination device that matches the current flow rate;

[0019] When the electrostatic current of the oil product is higher than the preset threshold, the electrostatic elimination device is optimized and the above steps are repeated until the electrostatic current of the oil product is no higher than the preset threshold, and the parameters of the electrostatic elimination device that match the current flow rate are determined.

[0020] Preferably, in the above-mentioned optimization auxiliary method for the oil pipeline static elimination equipment, the optimization of the static elimination equipment includes:

[0021] The cross-sectional shape and / or length and / or number of the antistatic needles in the antistatic device and / or the spacing between adjacent antistatic needles are changed.

[0022] An electronic device provided by the present invention comprises a memory for storing a computer program; and a processor for implementing the steps of the optimization auxiliary method for an oil pipeline static elimination device as described in any one of the above items when executing the computer program.

[0023] The present invention provides a readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the optimization auxiliary method for the oil pipeline static elimination equipment as described in any one of the above are implemented.

[0024] It can be seen from the above description that the optimization auxiliary system of the above-mentioned oil pipeline static elimination equipment provided by the present invention includes a static elimination equipment and a static detection equipment. The static detection equipment includes a conductive pipeline, a static measurement connection part sleeved on the outer periphery of the conductive pipeline, and a static measurement device, a static information processing device and a static information display device electrically connected to the static measurement connection part in sequence. The static information processing device is also electrically connected to the flow rate measurement device to obtain flow rate information. The static measurement connection part is used to measure the static current of the oil product in the conductive pipeline. The static information processing device is used to generate optimization auxiliary information of the static current of the oil product over time corresponding to the flow rate information according to the information of the static current of the oil product over time and the flow rate information. The static information display device is used to display the optimization auxiliary information to assist in optimizing the above-mentioned static elimination equipment. It can be seen that the system can realize online real-time detection of the static elimination effect of the oil product flowing in the oil pipeline, and adjust and optimize the parameter structure of the static eliminator according to the online real-time detection result to obtain a static elimination device with a better static elimination effect corresponding to the flow rate. Therefore, static elimination in the oil product can be effectively performed under any flow rate conditions to avoid excessive accumulation of static electricity in the oil product in the oil pipeline and the occurrence of dangerous situations. In addition, the optimization auxiliary method of the above-mentioned oil pipeline static elimination equipment provided by the present invention has the same advantages as the above-mentioned device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 A schematic diagram of an embodiment of an optimization auxiliary system for an oil pipeline static elimination device provided by the present invention;

[0027] Figure 2 A schematic cross-sectional view of a static elimination device in a specific embodiment of an optimization auxiliary system for a static elimination device for an oil pipeline;

[0028] Figure 3 A cross-sectional schematic diagram of an insulating bolt used in a specific embodiment of the present application;

[0029] Figure 4 A schematic diagram of a specific embodiment of an optimization auxiliary method for an oil pipeline static elimination device provided by the present invention;

[0030] Figure 5 Schematic diagram of the distribution of antistatic needles in the AA cross section;

[0031] Figure 6 Schematic diagram of the distribution of antistatic needles in the cross section of BB;

[0032] Figure 7 It is a schematic cross-sectional view of a four-diamond cone antistatic needle;

[0033] Figure 8 It is a schematic cross-sectional view of a triangular tapered antistatic needle;

[0034] Fig. 9 A schematic diagram of an embodiment of an electronic device provided by the present invention. DETAILED DESCRIPTION

[0035] The core of the present invention is to provide an optimization auxiliary system and method for oil pipeline static elimination equipment, which can realize online real-time detection of the static elimination effect when the oil flows in the oil pipeline, and adjust and optimize the parameter structure of the static eliminator according to the online real-time detection results to obtain a static elimination device with better static elimination effect corresponding to the flow rate, which can effectively eliminate static electricity in the oil under any flow rate conditions, and avoid excessive accumulation of static electricity in the oil pipeline and the occurrence of dangerous situations.

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The implementation example of the optimization auxiliary system of the oil pipeline static elimination equipment provided by the present invention is as follows: Figure 1 As shown, Figure 1 The schematic diagram of an embodiment of an optimization auxiliary system for an oil pipeline static elimination device provided by the present invention, the system may include a static elimination device 1 and a static detection device 2 which are interconnected by a pipeline. Figure 1The vertical dotted line in the figure is the boundary. The left side of the dotted line is the static elimination device 1, and the right side of the dotted line is the static detection device 2. The static detection device 2 is located downstream of the static elimination device 1 in the oil delivery direction. In other words, Figure 1 The oil flows from left to right in the pipeline according to the oil delivery direction shown by the left arrow in the figure. The oil first reaches the static elimination device 1, where the static elimination operation is performed, and then flows into the static detection device 2 to detect whether static electricity still exists therein. In this way, the effect of static elimination can be characterized. After this information is fed back, it can assist in optimizing the static elimination device 1. Moreover, the static detection device 2 may specifically include a conductive pipe 21, a static measurement connection portion 22 sleeved on the outer periphery of the conductive pipe 21, and a static measurement device 23, a static information processing device 24 and a static information display device 25 which are electrically connected to the static measurement connection portion 22 in sequence. It should be noted that the The conductive pipe 21 can be specifically a metal pipe to efficiently transmit electrostatic signals. The electrostatic information processing device 24 is also electrically connected to the flow rate measuring device 26 to obtain flow rate information. The electrostatic measurement connection part 22 can be electrically connected to the electrostatic measuring device 23 by a wire 27, and the electrostatic measuring device 23 and the electrostatic information processing device 24 can also be electrically connected by a wire. This flow rate measuring device 26 can be installed in a metal pipe to sense the flow rate. The electrostatic measurement connection part 22 is used to measure the electrostatic current of the oil in the conductive pipe 21. The electrostatic measurement connection part 22 must have a certain area to ensure a large contact area with the conductive pipe, thereby reducing the electrical signal. The impedance of transmission, the electrostatic measuring device 23 can preferably be an electrostatic meter, the above-mentioned electrostatic information processing device 24 is used to generate the optimization auxiliary information of the oil product electrostatic current changing with time corresponding to the flow rate information according to the information of the oil product electrostatic current changing with time and the flow rate information, and the above-mentioned electrostatic information display device 25 is used to display the optimization auxiliary information to assist in optimizing the above-mentioned static elimination device 1. In this case, relevant personnel can intuitively see the size of the electrostatic current at the current flow rate, which can facilitate the optimization of the static elimination equipment. Specifically, the oil product can be controlled to flow in the conductive pipe at a certain flow rate, and the oil product electrostatic current is measured for each flow rate. Real-time measurement is performed to establish a correlation between flow rate information and electrostatic current changes over time. For example, when the flow rate is low, if the electrostatic current measured at this time is small, it indicates that the effect of static elimination is good enough, which proves that the electrostatic elimination equipment used at this time meets the relevant requirements. When the flow rate is high, if the measured electrostatic current is large, it indicates that the static elimination effect is not good under this flow rate condition, which proves that the electrostatic elimination equipment used at this time does not meet the relevant requirements. In this case, it is necessary to make certain modifications to the parameters such as the shape or size of the electrostatic elimination equipment, and then continue to install it on the oil pipeline, and repeat the above measurement process until an electrostatic elimination equipment that matches the current oil flow rate is obtained.

[0038] It can be seen from the above description that in the embodiment of the optimization auxiliary system of the above-mentioned oil pipeline static elimination equipment provided by the present invention, since it includes a static elimination device and a static detection device, the static detection device includes a conductive pipeline, an static measurement connection part sleeved on the outer periphery of the conductive pipeline, and an static measurement device, a static information processing device and a static information display device electrically connected to the static measurement connection part in sequence, and the static information processing device is also electrically connected to the flow rate measurement device to obtain flow rate information. The static measurement connection part is used to measure the static current of the oil product in the conductive pipeline. The static information processing device is used to generate optimization auxiliary information of the static current of the oil product corresponding to the flow rate information according to the information of the static current of the oil product changing with time and the flow rate information. The static information display device is used to display the optimization auxiliary information to assist in optimizing the above-mentioned static elimination equipment. It can be seen that the system can realize online real-time detection of the static elimination effect of the oil product flowing in the oil pipeline, and adjust and optimize the parameter structure of the static eliminator according to the online real-time detection result to obtain a static elimination device with a better static elimination effect corresponding to the flow rate, so that static elimination can be effectively performed under any flow rate conditions to avoid excessive accumulation of static electricity in the oil product in the oil pipeline and the occurrence of dangerous situations.

[0039] In a specific embodiment of the optimization auxiliary system of the above-mentioned oil pipeline static elimination equipment, reference Figure 2 , Figure 2 The present invention is a cross-sectional schematic diagram of an electrostatic elimination device in a specific embodiment of an optimization auxiliary system for an oil pipeline electrostatic elimination device. The electrostatic elimination device 1 may include a conductive outer tube 11, an insulating inner tube 12 sleeved inside the conductive outer tube 11, and an antistatic needle 13. The conductive outer tube 11 may be made of a stainless steel pipe, which has a longer service life. The insulating inner tube 12 and the conductive outer tube 11 may preferably be coaxially arranged. The tail of the antistatic needle 13 may be fixed to the conductive outer tube 11 by an antistatic needle fixing component 14. The antistatic needle 13 passes through the conductive outer tube 11 and the insulating inner tube 12 in sequence, and its tip contacts the oil inside the insulating inner tube 12, and its tail contacts the conductive outer tube 11, so as to collect the charges induced by the conductive outer tube 11 and having the opposite polarity to the electrostatic charges in the oil and inject them into the oil to eliminate the electrostatic charges.

[0040] It should be noted that the above-mentioned insulating inner tube 12 can be made of highly insulating materials such as polytetrafluoroethylene, and the above-mentioned antistatic needle fixing component 14 can be made of a metal mechanical structure, which can reduce the capacitance value of the antistatic needle 13, thereby improving the effect of electrostatic induction. The lower cylindrical structure of the antistatic needle 13 can be fixed on the antistatic needle fixing component 14. In this case, a capacitor is formed between the charged oil flowing inside the oil pipeline and the conductive outer tube 11 through the insulating inner tube 12. The oil flowing inside serves as one electrode of the capacitor, and the conductive outer tube 11 serves as the other electrode. When the oil products carrying static charge flow in the oil pipeline, after entering the static elimination device, due to the existence of the insulating inner tube 12, the capacitance to the ground becomes smaller, the voltage rises sharply, and a deformed strong electric field area is formed on its inner wall. Due to the electrostatic induction effect, the conductive outer tube 11 will induce charges with the opposite polarity to the static charge in the oil products. Moreover, since the density of static charge is higher at the position with a smaller radius of curvature such as the static elimination needle, it gathers at the static elimination needle. Therefore, under the action of high potential, strong electric field and oil flow turbulence, these charges will be injected into the oil products in the oil pipeline along the static elimination needle to neutralize and offset the charges with the opposite polarity in the oil products, thereby achieving the purpose of eliminating the static charge in the oil products. It can be seen that this static elimination device is self-inductive, does not require an external power supply and any operation, has the ability to eliminate charges with high efficiency, can control the static electricity of the transported oil products within a safe range, and has a simple structure, safe and reliable elimination of electricity, and a long service life. Of course, other types of static elimination devices can also be selected according to actual needs, which are not limited here.

[0041] Based on the above specific embodiments, continue to refer to Figure 1 Further, the two ends of the conductive outer tube 11 are respectively the first flange 3 and the second flange 4, the two ends of the conductive pipeline 21 are respectively the third flange 5 and the fourth flange 6, the conductive outer tube 11 is connected to the oil pipeline (on the left side of the first flange) through the first flange 3. Figure 1 The conductive outer tube 11 is connected to the conductive pipe 21 through the second flange 4 and the third flange 5 by using insulating bolts 7, so that the two can be insulated. The conductive pipe 11 is connected to the conductive pipe 21 through the fourth flange 6 by using insulating bolts ( Figure 1 not shown) and the oil pipeline (right side of the fourth flange, Figure 1 The two are connected by a wire (not shown), which also makes the two have an insulation effect, so that it can be ensured that the detected static electricity is generated by the internal oil, rather than being transmitted from the oil pipeline, so that it can be ensured that the detected static electricity is the residual after the static electricity elimination equipment performs static electricity elimination operation on the oil, so as to provide an accurate and effective feedback on the static electricity elimination effect, and provide an accurate basis for the optimization of the static electricity elimination equipment. Further, refer to Figure 3 , Figure 3This is a cross-sectional schematic diagram of an insulating bolt used in a specific embodiment of the present application. The insulating bolt 7 may include an outer screw 71, a thickening compensation gasket 72, a fastener insulating part assembly 73, an inner nut 74 and an insulating sealing gasket 75. During specific operation, the outer screw 31 is installed on two flanges 76 that fit together, and insulating sealing gaskets 75 are provided on the fitting surfaces of the two flanges 76. Two fastener insulating parts 73 are provided in the screw holes at both ends of the flanges 76. Two thickening compensation gaskets 72 that fit together are installed at both ends of the outer screw 71 and the inner nut 74, respectively. The material of the fastener insulating part assembly 73 may preferably be a polymer insulating material, and the material of the insulating sealing gasket 75 may also preferably be a polymer insulating material.

[0042] In another specific embodiment of the optimization auxiliary system of the above-mentioned oil pipeline static elimination equipment, the above-mentioned static measurement connection part 22 can be preferably an electrostatic monitoring sensor, so that the purpose of online measurement can be achieved without destroying the industrial oil pipeline system, and there is no impact on industrial production. Moreover, the above-mentioned static measurement device 23 can be preferably an electrostatic meter, and the above-mentioned flow rate measurement device 26 can be preferably a flow meter arranged inside the conductive pipeline and in direct contact with the oil product. In addition, the above-mentioned static information processing device 24 can include a high-speed acquisition card and data processing software, and the above-mentioned static information display device 25 can be preferably a display screen. The static information processing device 24 can collect the acquired information into the data processing software through the high-speed acquisition card, and store it in a removable storage medium through a hardware device to facilitate the processing of the obtained information. .

[0043] Specifically, the electrostatic monitoring sensor is arranged on the oil pipeline, in direct contact with the industrial pipeline. The two ends of the industrial pipeline are insulated from other pipelines of the fuel transportation system by flanges containing insulating bolts. When the oil flows through the industrial pipeline, it will contact the wall of the industrial pipeline due to the flow and form a double electric layer at the liquid-solid interface. Due to the existence of the double electric layer, under the induction of the flow, the wall of the industrial pipeline will induce an equal amount of opposite charge to the oil inside. After the outer wall of the pipeline is grounded, the charge transfer will be formed due to the potential difference, that is, the current is formed. The electrostatic signal is transmitted to the electrometer through the electrostatic monitoring sensor, so as to obtain specific parameters, realize the intuitive evaluation of the electrostatic elimination effect, that is, to obtain the electrostatic current at each moment in the industrial pipeline system. The above-mentioned electrostatic information processing device 24 is used to determine the change of the electrostatic current in the industrial pipeline system with the detection time according to the electrostatic current and time at each moment in the industrial pipeline system. This process can be achieved through a high-speed acquisition card, which collects the readings of the electrostatic measuring device at a frequency of 20Hz and transmits them to the data recording software. The software processes the obtained electrostatic current data in real time, and an electrostatic detection data generation module can be used to generate information on the change of the pipeline electrostatic current over time corresponding to the flow state based on the change of the electrostatic current over time before the input of the industrial pipeline system to be tested and flow parameter information such as the flow rate of the pipeline.

[0044] A specific implementation example of an optimization auxiliary method for an oil pipeline static elimination device provided by the present invention is as follows: Figure 4 As shown, Figure 4 A schematic diagram of a specific embodiment of an optimization auxiliary method for an oil pipeline static elimination device provided by the present invention, using an optimization auxiliary system for an oil pipeline static elimination device as described above, may include the following steps:

[0045] S1: Connect the static electricity elimination device and the static electricity detection device to the oil pipeline, and place the static electricity detection device downstream of the static electricity elimination device in the oil delivery direction;

[0046] That is, after the connection Figure 1 As shown, the oil first enters the static elimination device from the oil pipeline on the left, then enters the static detection device, and finally flows out from the oil pipeline on the right. In this way, static elimination and detection feedback of the static elimination effect are achieved, and the static elimination equipment is optimized accordingly.

[0047] S2: While transporting oil, use static electricity elimination equipment to eliminate static electricity in the oil;

[0048] Specifically, but not limited to, an antistatic needle may be used to inject the induced charge into the oil product to achieve neutralization of positive and negative charges, thereby eliminating static electricity in the oil product.

[0049] S3: using an electrostatic measuring device to measure the electrostatic current of the oil in the conductive pipeline, and using a flow velocity measuring device to measure the flow velocity information of the oil;

[0050] It should be noted that in previous technologies, only static electricity elimination was performed, and static electricity detection was not performed. Therefore, the static electricity elimination effect could not be detected at all times. When the flow rate is too fast, the static electricity elimination effect may not be achieved, and static electricity may even increase. Therefore, this step is to form such a feedback mechanism to detect the static electricity in the oil after being processed by the static electricity elimination equipment to determine whether the static electricity in the oil can be effectively eliminated under the current flow state.

[0051] S4: using an electrostatic information processing device to generate optimized auxiliary information of the electrostatic current of the oil product changing with time corresponding to the flow rate information;

[0052] It should be noted that the change of static current of oil products at each flow rate can be displayed in real time on the display screen to provide a basis for the optimization of static elimination equipment.

[0053] S5: using the static information display device to display the optimization auxiliary information, and when the static current of the oil product is not higher than a preset threshold, determining that the static elimination device is a static elimination device that matches the current flow rate;

[0054] It should be noted that the preset threshold can be selected according to actual needs. When it is not higher than the preset threshold, it proves that the static electricity elimination device has effectively eliminated static electricity and meets the requirements. At this time, it means that the static electricity elimination device can be used to eliminate static electricity in the oil at the current flow rate.

[0055] S6: When the electrostatic current of the oil product is higher than the preset threshold, the electrostatic elimination device is optimized and the above steps are repeated until the electrostatic current of the oil product is no higher than the preset threshold, and the parameters of the electrostatic elimination device that match the current flow rate are determined.

[0056] It should be noted that this situation proves that the static electricity elimination device does not effectively eliminate the static electricity in the oil, and there is still a lot of residual static electricity, which means that the current static electricity elimination device of this structure is not suitable for the current flow rate. In this case, it is necessary to adjust the shape, size and other structural parameters of the static electricity elimination device. After the adjustment, repeat the above steps to perform static electricity detection. If static electricity cannot be effectively eliminated after the modification, continue to cycle the above steps until the detected oil static electricity current is not higher than the preset threshold, which proves that the current static electricity elimination device can be applied to the current flow rate, so that the parameters of the static electricity elimination device corresponding to the current flow rate are found. After multiple steps of cycling, the parameters of the static electricity elimination device suitable for oil products of various flow rates can be found. When static electricity elimination is required for a certain flow rate, the static electricity elimination device with corresponding parameters that matches it can be installed in the oil pipeline, so that static electricity elimination can be performed more effectively.

[0057] In a specific embodiment of the above-mentioned optimization auxiliary method of the oil pipeline static elimination equipment, the above-mentioned step of optimizing the static elimination equipment may specifically include: changing the cross-sectional shape and / or length and / or number of the static elimination needles in the static elimination equipment and / or the spacing between adjacent static elimination needles.

[0058] Specific, combined Figure 1 and Figure 5 , Figure 6 , Figure 5 This is a schematic diagram of the distribution of antistatic needles in the AA cross section. Figure 6 This is a schematic diagram of the distribution of anti-static needles in the cross-section of BB. It can be seen that the anti-static needles on the two cross-sections are staggered in the radial direction. This can ensure that the static electricity elimination in each spatial part is more uniform. The anti-static needles can inject charges into the oil more evenly to achieve a better static electricity elimination effect.

[0059] The optimization of the cross-sectional shape of the antistatic needle can be specifically as follows:

[0060] In a pipeline with a flow rate of 1m / s to 2m / s, the specific optimization can be as follows: the length of the antistatic needle of the antistatic equipment is 0.5R, the number of antistatic needles is 9, the cross-sectional shape is circular, and the spacing between adjacent antistatic needle cross-sections is 7.2R.

[0061] In a pipeline with a flow rate of 2m / s to 3m / s, the specific optimization can be as follows:

[0062] The tip and side blades of the multi-diamond cone anti-static needle form a tip sensing area, which can increase the area of ​​static neutralization on the oil flow cross section, and the multi-diamond cone anti-static needle with a smaller cross-sectional angle can form a stronger electric field in the pipeline than the commonly used circular cross-sectional needle, especially in the axial direction of the pipeline cross section, the average value of the electric field modulus increases by 13.3%, and the average value of the electric field modulus in the entire space will also increase by 1.1%. A stronger electric field is conducive to the anti-static needle injecting charges of opposite polarity into the oil in the pipe through the tip effect, achieving a better static elimination effect. The cross-sectional shape of the anti-static needle can be a triangular needle with a cross-sectional angle of 10°, specifically a triangular cone or a quadrangular cone, refer to Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the cross section of a four-diamond cone antistatic needle. Figure 8 It is a schematic cross-sectional view of a triangular cone-shaped antistatic needle. The quadrangular cone-shaped antistatic needle 13 has a relatively sharp blade 15. The cross-sectional shape of the blade 15 of the antistatic needle is a triangular needle with a cross-sectional angle of 10°. The needle tip points to the axis of the pipe. The triangular cone-shaped antistatic needle 13 also has a relatively sharp blade 15. The cross-sectional shape of the blade 15 of the antistatic needle is a triangular needle with a cross-sectional angle of 10°.

[0063] The optimization of the interval between antistatic needles can be as follows:

[0064] It is calculated that when the spacing between the current collecting discharge needles is 4.8R to 7.2R, R is the radius of the oil pipeline, and the average charge density at the outlet remains basically unchanged; the spacing between the two needles affects the electric field formed by the adjacent discharge needles. The smaller the spacing, the greater the mutual influence, resulting in a decrease in the electric field strength around the discharge needles and a decrease in the area greater than the threshold electric field. Considering the volume of the static elimination equipment, the spacing can be taken as 7.2R, and the average charge density at the outlet is relatively small.

[0065] The optimization of the length of the antistatic needle can be as follows:

[0066] The average charge density at the outlet decreases with the increase of the length of the antistatic needle, but an excessively long antistatic needle will affect the flow state of the pipe flow. By calculating the charge density at the outlet under different antistatic needle lengths, the relationship between the charge density and the discharge needle length was obtained. It was found that when the length of the antistatic needle was 1.0R, the charge density at the outlet was the smallest. Considering the effect of the length of the antistatic needle on the flow state of the pipe flow, the length of the antistatic needle was preferably set to 0.9R on the basis of ensuring the efficiency of static elimination.

[0067] The optimization of the number of antistatic needles can be as follows:

[0068] The antistatic needles are arranged in a ring shape in the tube to eliminate static charges with the greatest efficiency. On this basis, the charge distribution is calculated to see how the number of discharge needles affects the average charge density at the outlet. When the number of antistatic needles is 9, the average charge density at the outlet is close to the minimum value, and the antistatic device has the strongest charge elimination capability. In actual engineering applications, considering the actual working conditions and costs, the tube length is limited, so the number of antistatic needles is preferably 9.

[0069] In summary, it is preferred to use an antistatic needle with a triangular star cross-section and an angle of 10°, with a length of 0.9 times the radius of the pipeline. Nine antistatic needles are used in the antistatic elimination equipment, and the interval between each antistatic needle is 7.2R.

[0070] For specific industrial oil pipelines, the static elimination effect may vary. On this basis, the static elimination effect data of oil products under specific working conditions can be obtained through the above-mentioned online static measurement equipment. By analyzing these data, feedback can be provided as the basis for the design of related structures to optimize the static elimination equipment. It can be seen that the above method makes the static elimination equipment more efficient in eliminating charges by setting parameters such as the arrangement and number of static elimination needles, thereby controlling the static electricity of the transported oil products within a safe value; by directly connecting the sensor to the running industrial pipeline system to be tested to perform such pipeline system flow static detection, there is no need to suspend the operation of the pipeline, and the entire static detection can be achieved without stopping the industrial pipeline system to be tested. It can be seen that this can ensure a higher efficiency in static measurement and a higher optimization efficiency for static elimination equipment.

[0071] An embodiment of an electronic device provided by the present invention is as follows: Fig. 9 As shown, Fig. 9 This is a schematic diagram of an embodiment of an electronic device provided by the present invention, the electronic device includes a memory 901 for storing a computer program; a processor 902 for implementing the steps of any of the above optimization auxiliary methods for an oil pipeline static elimination device when executing the computer program. The electronic device may also include a display screen, an input and output interface, a communication interface, a power supply, and a communication bus.

[0072] In an embodiment of a readable storage medium provided by the present invention, a computer program is stored on the readable storage medium, and when the computer program is executed by a processor, the steps of the optimization auxiliary method of the oil pipeline static elimination equipment as described in any one of the above items are implemented.

[0073] The above electronic equipment can accurately detect the static electricity of oil in the pipeline after static electricity elimination. The memory can also be used to realize the storage and mobile transmission of online measurement results, which is convenient for the processing and analysis of measurement data.

[0074] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An optimization auxiliary system for oil pipeline static elimination equipment, characterized in that: It comprises an electrostatic elimination device and an electrostatic detection device interconnected by a pipeline, wherein the electrostatic detection device is located downstream of the electrostatic elimination device in the oil delivery direction, the electrostatic detection device comprises a conductive pipeline, an electrostatic measurement connection portion sleeved on the outer periphery of the conductive pipeline, and an electrostatic measurement device, an electrostatic information processing device and an electrostatic information display device electrically connected to the electrostatic measurement connection portion in sequence, the electrostatic information processing device is also electrically connected to a flow rate measurement device to obtain flow rate information, the electrostatic measurement connection portion is used to measure the electrostatic current of the oil in the conductive pipeline, the electrostatic information processing device is used to generate optimized auxiliary information of the electrostatic current of the oil over time corresponding to the flow rate information based on the information of the electrostatic current of the oil over time and the flow rate information, and the electrostatic information display device is used to display the optimized auxiliary information to assist in optimizing the electrostatic elimination device.

2. The optimization auxiliary system for oil pipeline static elimination equipment according to claim 1 is characterized in that: The static electricity elimination device includes a conductive outer tube, an insulating inner tube sleeved inside the conductive outer tube, and an anti-static needle. The anti-static needle passes through the conductive outer tube and the insulating inner tube in sequence, and its tip contacts the oil inside the insulating inner tube, and its tail contacts the conductive outer tube. The anti-static needle is used to collect the charges induced by the conductive outer tube with opposite polarity to the electrostatic charges in the oil and inject them into the oil to eliminate the electrostatic charges.

3. The optimization auxiliary system for oil pipeline static elimination equipment according to claim 2 is characterized in that: The two ends of the conductive outer tube are respectively a first flange and a second flange, the two ends of the conductive pipeline are respectively a third flange and a fourth flange, the conductive outer tube is connected to the oil pipeline via the first flange, the conductive outer tube is connected to the third flange via the second flange using insulating bolts to achieve connection with the conductive pipeline, and the conductive pipeline is connected to the oil pipeline via the fourth flange using insulating bolts.

4. The optimization auxiliary system for oil pipeline static elimination equipment according to claim 1 is characterized in that: The conductive pipe is a stainless steel pipe, and the static measurement connection part is a static monitoring sensor.

5. The optimization auxiliary system for oil pipeline static elimination equipment according to claim 1 is characterized in that: The electrostatic measuring device is an electrostatic meter, and the flow rate measuring device is a flow meter which is arranged inside the conductive pipe and in direct contact with the oil product.

6. The optimization auxiliary system for oil pipeline static elimination equipment according to claim 1 is characterized in that: The static information processing device includes a high-speed acquisition card and data processing software, and the static information display device is a display screen.

7. An optimization auxiliary method for oil pipeline static elimination equipment, characterized in that: An optimization auxiliary system using the oil pipeline static elimination device according to any one of claims 1 to 6 comprises: Connecting the static electricity elimination device and the static electricity detection device to the oil pipeline, and placing the static electricity detection device downstream of the static electricity elimination device in the oil delivery direction; While transporting the oil, the static electricity in the oil is eliminated by using the static electricity elimination device; The electrostatic current of the oil in the conductive pipe is measured by using the electrostatic measuring device, and the flow velocity information of the oil is measured by using the flow velocity measuring device; Using the electrostatic information processing device to generate optimized auxiliary information of the electrostatic current of the oil product changing with time corresponding to the flow rate information; The optimization auxiliary information is displayed by using the static information display device, and when the static current of the oil product is not higher than a preset threshold, the static elimination device is determined to be a static elimination device that matches the current flow rate; When the electrostatic current of the oil product is higher than the preset threshold, the electrostatic elimination device is optimized and the above steps are repeated until the electrostatic current of the oil product is no higher than the preset threshold, and the parameters of the electrostatic elimination device that match the current flow rate are determined.

8. The optimization auxiliary method for oil pipeline static elimination equipment according to claim 7, characterized in that: The optimization of the static elimination equipment comprises: The cross-sectional shape and / or length and / or number of the antistatic needles in the antistatic device and / or the spacing between adjacent antistatic needles are changed.

9. An electronic device, characterized in that: It comprises a memory for storing a computer program; and a processor for implementing the steps of the optimization auxiliary method for the oil pipeline static elimination equipment as described in any one of claims 7-8 when executing the computer program.

10. A readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the optimization auxiliary method for the oil pipeline static elimination equipment according to any one of claims 7 to 8.

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