CN113217819A - Electrostatic risk reduction device and method for oil product in pipeline transportation - Google Patents
Electrostatic risk reduction device and method for oil product in pipeline transportation Download PDFInfo
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- CN113217819A CN113217819A CN202010070913.6A CN202010070913A CN113217819A CN 113217819 A CN113217819 A CN 113217819A CN 202010070913 A CN202010070913 A CN 202010070913A CN 113217819 A CN113217819 A CN 113217819A
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- 238000000034 method Methods 0.000 title claims description 22
- 230000009467 reduction Effects 0.000 title claims description 21
- 238000002347 injection Methods 0.000 claims abstract description 95
- 239000007924 injection Substances 0.000 claims abstract description 95
- 239000000654 additive Substances 0.000 claims abstract description 54
- 230000000996 additive effect Effects 0.000 claims abstract description 53
- 230000003068 static effect Effects 0.000 claims abstract description 28
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 230000008859 change Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 86
- 230000005611 electricity Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/086—Pipe-line systems for liquids or viscous products for explosives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Elimination Of Static Electricity (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention provides a static risk reducing device for oil product pipeline, which comprises: the pipe section is connected in series on the oil pipeline in a flange connection mode; a density meter for detecting in real time the charge density of the oil within the pipe section; the injection pump is used for receiving an injection control instruction and injecting the antistatic additive into the pipe section under the control of the injection control instruction; the conductivity monitor is used for monitoring the conductivity of the oil product in the pipe section in real time; and the control module is used for sending an injection control instruction to the injection pump and monitoring the change of the conductivity when the charge density is greater than a first threshold value and the duration is greater than a first preset time. The invention can detect the charge density of the oil product in real time, reduce the static risk of the oil product by adding the antistatic additive to improve the conductivity of the oil product after the charge density is larger than a specific value and lasts for a certain time, and ensure the effectiveness of the addition of the antistatic additive by monitoring the conductivity in real time by using the conductivity monitor.
Description
Technical Field
The invention relates to the technical field of petrochemical oil and gas storage and transportation, in particular to a device and a method for reducing electrostatic risk of oil products in pipe transportation.
Background
In the oil conveying process, a large amount of static electricity is generated in the oil conveying process due to the reasons that the conductivity of the oil is low, the oil conveying speed is too high, the oil contains impurities and the like. GB 12158 and 2006 general guidelines for preventing electrostatic accidents and GB 13348 and 2009 Electrostatic safety regulations for liquid Petroleum products specify that a liquid electrostatic eliminator can be installed at the end of a pipe to reduce electrostatic accumulation. However, at present, the oil pipeline static eliminator is mainly a passive static eliminator, which eliminates oil static by discharging static electricity of discharge needles in an induction mode and is installed on a pipeline with a larger diameter.
In the prior art, the method for eliminating static electricity in pipeline oil products mainly comprises the following steps: (1) static electricity is leaked in the grounding of the metal shell, the static electricity on the metal shell can only be conducted away in the mode, the static electricity in the oil product cannot be conducted away, and the static electricity elimination needs a certain time and cannot meet the requirement of the flow velocity of the oil product, so that the occurrence of transient discharge accidents is still difficult to avoid. (2) The pipeline static eliminator is additionally arranged, but the eliminating efficiency is very low, and the application condition is harsh.
Accordingly, the present invention provides an apparatus and method for reducing the electrostatic risk of oil in a pipeline.
Disclosure of Invention
To solve the above problems, the present invention provides an electrostatic risk reduction device for piping oil products, the device comprising:
the pipe section is connected in series on the oil pipeline in a flange connection mode;
the density meter is arranged on the pipe section and is used for detecting the charge density of the oil product in the pipe section in real time;
the injection pump is arranged on the pipe section and used for receiving an injection control command and injecting the antistatic additive into the pipe section under the control of the injection control command;
the conductivity monitor is arranged on the pipe section and used for monitoring the conductivity of the oil product in the pipe section in real time;
and the control module is communicated with the density meter, the injection pump and the conductivity monitor and is used for sending the injection control instruction to the injection pump and monitoring the change of the conductivity when the charge density is greater than a first threshold value and the duration is greater than a first preset time.
According to one embodiment of the invention, the antistatic additive injected by the injection pump has ashless low viscosity characteristics, which satisfy the following: when the additive amount of the antistatic additive is less than a first percent concentration, the conductivity of the oil is made greater than a second threshold value.
According to one embodiment of the invention, the mass of addition of the antistatic additive in a single injection of the injection pump is fixed, the minimum mass of addition being calculated by the following formula:
Q＝5*m
wherein Q represents the minimum adding mass of the antistatic additive, and the unit is mg, and m represents the oil loading mass of the oil tank truck, and the unit is kg.
According to one embodiment of the invention, the control module further comprises a manual injection module for allowing the antistatic additive to be added to the oil product through the injection pump in a manual manner when the charge density is less than or equal to the first threshold value, so as to verify whether the device is working normally.
According to one embodiment of the present invention, the apparatus further comprises an alarm module, which is in communication with the control module, and is configured to send out an alarm signal, wherein the triggering mode is as follows: and during a second preset time period after the control module sends the injection control instruction, the conductivity is less than or equal to the second threshold value.
According to an embodiment of the present invention, the second preset time is determined by the following factors: the installation distance between the conductivity monitor and the injection pump, the flow rate of oil products, the reaction time of the injection pump and the dissolving speed of the antistatic additive.
According to one embodiment of the invention, the control module communicates with the density meter, the infusion pump and the conductivity monitor wirelessly or by wire.
According to another aspect of the present invention, there is also provided a method for reducing the risk of static electricity for piping oil products, the method comprising the steps of:
detecting the charge density of an oil product in a pipe section in real time through a density meter arranged on the pipe section;
receiving an injection control command through an injection pump arranged on the pipe section, and injecting the antistatic additive into the pipe section under the control of the injection control command;
monitoring the conductivity of the oil product in the pipe section in real time by a conductivity monitor arranged on the pipe section;
and transmitting the injection control instruction to the injection pump and monitoring the change of the conductivity by a control module when the charge density is greater than a first threshold value and the duration is greater than a first preset time.
According to one embodiment of the invention, the method further comprises: when the charge density is less than or equal to the first threshold value, the antistatic additive is added into the oil product through the injection pump in a manual mode, so that whether the static risk reduction device works normally or not is verified.
According to one embodiment of the invention, the method further comprises: and if the conductivity is less than or equal to a second threshold value within a second preset time period after the control module sends the injection control instruction, triggering an alarm module and sending an alarm signal through the alarm module.
The static risk reduction device and method for oil product in pipe transportation provided by the invention can detect the charge density of the oil product in real time, reduce the static risk of the oil product by adding the antistatic additive to improve the conductivity of the oil product after the charge density is larger than a specific value and lasts for a certain time, and ensure the effectiveness of the addition of the antistatic additive by monitoring the conductivity in real time by using the conductivity monitor, so that the device and method can be applied to flammable and explosive places such as petrochemical oil and gas storage and transportation, and the like, and reduce or even eliminate the static risk of the oil product.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 shows a block diagram of an electrostatic risk reduction device for piping oil products according to an embodiment of the present invention;
FIG. 2 shows a block diagram of an electrostatic risk reduction device for piping oil products according to another embodiment of the present invention; and
FIG. 3 shows a flow chart of a method for reducing the electrostatic risk of piping oil products according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
Fig. 1 shows a block diagram of an electrostatic risk reduction device for piping oil products according to an embodiment of the present invention. As shown in fig. 1, the static risk reduction device comprises a pipe section 101, an injection pump 102, a conductivity monitor 103, a density meter 104, and a control module 105.
The pipe section 101 is connected in series to the oil pipeline in a flange connection manner. Specifically, pipe segment 101 is the main piece of equipment for the entire installation, and in one embodiment, the diameter of pipe segment 101 is the same as the diameter of the oil pipeline, both 100 mm.
A density meter 104 is disposed on the pipe segment 101 for real-time monitoring of the charge density of the oil within the pipe segment 101. In addition, the density meter 104 detects the electrical charge of the oil in the pipeline in real time and uploads the charge density data detected in real time to the control module 105. Specifically, the density meter 104 may use an oil electrostatic density meter.
The injection pump 102 is disposed on the pipe segment 101 and is configured to receive an injection control command and inject the antistatic additive into the pipe segment 101 under the control of the injection control command. Specifically, in practical applications, the injection pump 102 uses an anti-static additive injection pump, and the dosage of a single injection of the injection pump 102 can be adjusted during practical use.
Generally, the antistatic additives injected by the injection pump 102 have ashless low viscosity characteristics, and the performance is satisfied as follows: when the antistatic additive is added in an amount less than the first percent concentration, the electrical conductivity of the oil is made greater than a second threshold value. Preferably, the first percent concentration may take the value of 5 ppm. The second threshold may take the value of 250 pS/m. Generally, oils include gasoline as well as diesel.
In addition, the mass of the antistatic additive added in a single injection by the injection pump 102 is fixed, and the minimum mass of the additive is calculated by the following formula:
Q＝5*m
wherein Q represents the minimum adding mass of the antistatic additive and has the unit of mg, and m represents the oil loading mass of the oil tank truck and has the unit of kg.
In one embodiment, assuming that the oil loading of the tank truck is 2000kg, the minimum addition mass of the antistatic additive is 100g, which can be calculated according to the above formula; assuming that the oil loading of the oil tank truck is 25000kg, the minimum addition mass of the antistatic additive is 125g which can be calculated according to the above formula.
The conductivity monitor 103 is disposed on the pipe segment 101 and is used for monitoring the conductivity of the oil product in the pipe segment 101 in real time. In addition, the conductivity monitor 103 uploads the real-time monitored oil conductivity data to the control module 105. Specifically, the conductivity monitor 103 may use an in-line conductivity monitor.
The control module 105 is in communication with the density meter 104, the injection pump 102, and the conductivity monitor 103 for sending injection control instructions to the injection pump 102 and monitoring the change in conductivity when the charge density is greater than a first threshold and the duration is greater than a first preset time. Preferably, the first threshold and the first preset time may be set by the control module 105. Preferably, the first threshold value is 20 μ C/m3Or 30 μ C/m3. The first preset time takes 5 s.
Generally, the control module 105 communicates with the density meter 104, the infusion pump 102, and the conductivity monitor 103 wirelessly or by wire.
To summarize, the control module 105 receives the charge density data uploaded by the density meter 104, and when the charge density exceeds a first threshold and the duration is greater than a first preset time, sends an injection control instruction to the injection pump 102 to start the injection pump 102, and adds the antistatic additive to the oil product through the injection pump 102 to improve the conductivity of the oil product and reduce the electrostatic risk of the oil product.
Fig. 2 shows a block diagram of an electrostatic risk reduction device for piping oil products according to another embodiment of the present invention. As shown in fig. 2, the electrostatic risk reduction device comprises a pipe segment 101, an injection pump 102, a conductivity monitor 103, a density meter 104, a control module 105, an alarm module 201, and a manual injectant module 202.
The pipe section 101, the injection pump 102, the conductivity monitor 103, the density meter 104, and the control module 105 in fig. 2 have the same functions as those in fig. 1, and will not be described again.
The alarm module 201 is in communication with the control module 105, and is configured to send out an alarm signal, where the triggering method is as follows: during a second preset time period after the control module 105 sends the injection control command, the conductivity is less than or equal to a second threshold value. Specifically, the alarm module 201 communicates with the control module 105 in a wired or wireless manner.
Generally, the control module 105 analyzes the conductivity data information uploaded by the conductivity monitor 103 in real time, when the injection pump 102 is started after receiving the injection control command and injects the antistatic additive for a period of time (a second preset time), the detection result of the conductivity monitor does not exceed 250pS/m (a second threshold), and the control module 105 controls the alarm module 201 to output an alarm signal, which indicates that the injection effect is not good and the static risk reduction device is not operated normally.
Specifically, the value of the second preset time is 8 s.
In one embodiment, the second preset time is determined by the following factors: the installation distance between the conductivity monitor and the injection pump, the flow rate of the oil product, the reaction time of the injection pump and the dissolution speed of the antistatic additive.
Specifically, the second preset time setting is mainly determined by the following factors:
1. the installation distance between the conductivity monitor and the injection pump is less than 2 m;
2. the flow velocity of the oil product is higher than 0.5m/s under the normal condition;
3. the reaction time of the injection pump is less than 1 s;
4. the dissolution rate of the antistatic additive;
5. a certain time margin is considered.
The manual injection module 202 is used for allowing the antistatic additive to be manually added into the oil product through an injection pump when the charge density is less than or equal to a first threshold value so as to verify whether the static risk reduction device works normally.
Generally, the static risk reduction device has a manual injection function, when the charge density of the oil product does not exceed a threshold value for a long time (for example, for one year or more), the antistatic additive can be injected into the oil product by the manual injection, and the result detected by the conductivity monitor determines whether the whole static risk reduction device is operating normally. The control module is provided with a manual agent injection function to simulate the condition that the electrostatic density of the primary oil product exceeds a threshold value.
FIG. 3 shows a flow chart of a method for reducing the electrostatic risk of piping oil products according to an embodiment of the present invention.
As shown in FIG. 3, in step S301, the charge density of the oil within the pipe section is detected in real time by a density meter disposed on the pipe section. Specifically, during the transportation of the oil product, the conductivity is low, the oil transportation speed is fast, and the oil product contains impurities, which may cause a large amount of static electricity during the transportation of the oil product, so the charge density of the oil product needs to be detected in real time by the density meter 104.
Specifically, the pipe section 101 is provided with a density meter 104, and the density meter 104 can detect the charge density of the oil product in real time and upload the detected charge density data to the control module 105. In actual use, the density meter 104 may be an oil electrostatic density meter.
In step S302, an injection control command is received by an injection pump provided on the pipe section, and the antistatic additive is injected into the pipe section under the control of the injection control command. In order to reduce the charge density, improve the conductivity and reduce the electrostatic risk of the oil product, the injection pump 102 arranged on the pipe section 101 injects the antistatic additive, so that the conductivity of the oil product is increased and the electrostatic risk is reduced.
In particular, the word injection dosage of the antistatic additive is fixed, but may be modified according to the actual situation. Generally, the antistatic additive has the characteristics of no ash and low viscosity, and the performance of the antistatic additive is that the conductivity of gasoline and diesel oil can be improved to more than 250pS/m when the additive amount is less than 5 ppm.
And, the minimum mass per shot of the antistatic additive is calculated by the following formula:
Q＝5*m
wherein Q represents the minimum adding mass of the antistatic additive and has the unit of mg, and m represents the oil loading mass of the oil tank truck and has the unit of kg.
In step S303, the conductivity of the oil in the pipe section is monitored in real time by a conductivity monitor provided on the pipe section. After the injection pump 102 injects the antistatic additive, the conductivity of the oil product needs to be monitored in real time, and in the present invention, the conductivity of the oil product is detected in real time by the conductivity monitor 103 disposed on the pipe segment 101, and the detected conductivity data is uploaded to the control module 105.
Generally, if the conductivity has not exceeded 250pS/m for a period of 8s, this indicates that the static risk reduction device is not functioning properly.
In step S304, when the charge density is greater than the first threshold and the duration is greater than the first preset time, the control module transmits an injection control command to the injection pump and monitors the change of the conductivity. In order to reduce the static risk, the control module 105 needs to send an injection control command, and the injection pump 102 receives the injection control command to inject the antistatic additive into the oil product. In addition, the control module 105 is further required to monitor the change of the conductivity in real time through the conductivity data uploaded by the conductivity monitor 103.
In addition, when the charge density is less than or equal to the first threshold value, the antistatic additive is added into the oil product through the injection pump in a manual mode so as to verify whether the static risk reduction device works normally.
In addition, if the conductivity is less than or equal to a second threshold value within a second preset time period after the control module sends the injection control instruction, the alarm module is triggered, and an alarm signal is sent out through the alarm module. Generally, if the control module 105 automatically counts the time after the injection pump 102 is started to perform the injection operation of the antistatic additive, and the conductivity does not exceed 250pS/m after exceeding 8s, the control module 105 controls the alarm module 201 to send out an alarm signal.
In conclusion, the electrostatic risk reduction device and method for oil product pipe transportation provided by the invention can detect the charge density of the oil product in real time, reduce the electrostatic risk of the oil product by adding the antistatic additive to improve the conductivity of the oil product after the charge density is larger than a specific value and lasts for a certain time, and ensure the effectiveness of the addition of the antistatic additive by monitoring the conductivity in real time by using the conductivity monitor, so that the electrostatic risk reduction device and method for oil product pipe transportation can be applied to flammable and explosive places such as petrochemical oil gas storage and transportation, and the like, and reduce or even eliminate the electrostatic risk of the oil product.
It is to be understood that the disclosed embodiments of the invention are not limited to the particular structures, process steps, or materials disclosed herein but are extended to equivalents thereof as would be understood by those ordinarily skilled in the relevant arts. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.
Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Thus, the appearances of the phrase "one embodiment" or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An electrostatic risk reduction device for piping oil products, the device comprising:
the pipe section is connected in series on the oil pipeline in a flange connection mode;
the density meter is arranged on the pipe section and is used for detecting the charge density of the oil product in the pipe section in real time;
the injection pump is arranged on the pipe section and used for receiving an injection control command and injecting the antistatic additive into the pipe section under the control of the injection control command;
the conductivity monitor is arranged on the pipe section and used for monitoring the conductivity of the oil product in the pipe section in real time;
and the control module is communicated with the density meter, the injection pump and the conductivity monitor and is used for sending the injection control instruction to the injection pump and monitoring the change of the conductivity when the charge density is greater than a first threshold value and the duration is greater than a first preset time.
2. The apparatus of claim 1, wherein said anti-static additive injected by said injection pump has ashless low viscosity characteristics which satisfy the following: when the additive amount of the antistatic additive is less than a first percent concentration, the conductivity of the oil is made greater than a second threshold value.
3. The apparatus according to claim 1, wherein the mass of addition of the antistatic additive in a single injection of the injection pump is fixed and the minimum mass of addition is calculated by the following formula:
Q＝5*m
wherein Q represents the minimum adding mass of the antistatic additive, and the unit is mg, and m represents the oil loading mass of the oil tank truck, and the unit is kg.
4. The device according to any one of claims 1 to 3, wherein the control module further comprises a manual injection module for allowing the antistatic additive to be added to the oil product by the injection pump in a manual manner when the charge density is equal to or less than the first threshold value, so as to verify whether the device is operating normally.
5. The device of claim 2, further comprising an alarm module in communication with the control module for emitting an alarm signal, triggered by: and during a second preset time period after the control module sends the injection control instruction, the conductivity is less than or equal to the second threshold value.
6. The apparatus of claim 5, wherein the second predetermined time is determined by: the installation distance between the conductivity monitor and the injection pump, the flow rate of oil products, the reaction time of the injection pump and the dissolving speed of the antistatic additive.
7. The apparatus of claim 1, wherein the control module communicates with the density meter, the infusion pump, and the conductivity monitor wirelessly or by wire.
8. A method for reducing the electrostatic risk of a piped oil, characterized in that it comprises the following steps:
detecting the charge density of an oil product in a pipe section in real time through a density meter arranged on the pipe section;
receiving an injection control command through an injection pump arranged on the pipe section, and injecting the antistatic additive into the pipe section under the control of the injection control command;
monitoring the conductivity of the oil product in the pipe section in real time by a conductivity monitor arranged on the pipe section;
and transmitting the injection control instruction to the injection pump and monitoring the change of the conductivity by a control module when the charge density is greater than a first threshold value and the duration is greater than a first preset time.
9. The method of claim 8, further comprising: when the charge density is less than or equal to the first threshold value, the antistatic additive is added into the oil product through the injection pump in a manual mode, so that whether the static risk reduction device works normally or not is verified.
10. The method of claim 8, further comprising: and if the conductivity is less than or equal to a second threshold value within a second preset time period after the control module sends the injection control instruction, triggering an alarm module and sending an alarm signal through the alarm module.
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| CN202010070913.6A CN113217819B (en) | 2020-01-21 | 2020-01-21 | Static risk reduction device and method for oil pipe transportation |
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| CN202010070913.6A CN113217819B (en) | 2020-01-21 | 2020-01-21 | Static risk reduction device and method for oil pipe transportation |
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| CN108020730A (en) * | 2016-10-31 | 2018-05-11 | 中国石油化工股份有限公司 | Oil depot pays oily electrostatic monitoring system |
| CN108931695A (en) * | 2017-05-24 | 2018-12-04 | 中国石油化工股份有限公司 | A kind of active electrostatic charge of oil arrester with oil gas warning function |
| CN108889484A (en) * | 2018-08-31 | 2018-11-27 | 北方华锦化学工业股份有限公司 | A kind of boat coal production dedicated injected system of antistatic agent |
| CN209539663U (en) * | 2019-01-24 | 2019-10-25 | 洛阳绿潮环保科技有限公司 | A kind of intelligence note control device ensureing boat coal quality |
| CN110095663A (en) * | 2019-05-22 | 2019-08-06 | 中山大学 | The dynamic measurement system and method for the electrostatic charge density of liquid in a kind of pipeline |
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