CN110763924A - Petroleum static on-line monitoring and information evaluation system - Google Patents
Petroleum static on-line monitoring and information evaluation system Download PDFInfo
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- CN110763924A CN110763924A CN201911270115.1A CN201911270115A CN110763924A CN 110763924 A CN110763924 A CN 110763924A CN 201911270115 A CN201911270115 A CN 201911270115A CN 110763924 A CN110763924 A CN 110763924A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/12—Measuring electrostatic fields or voltage-potential
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/24—Arrangements for measuring quantities of charge
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Abstract
The invention discloses an oil static online monitoring and information evaluation system which comprises a short installation pipe, wherein a micro-current information sensor and an oil inlet valve are respectively installed on the short installation pipe, a shielding case support is arranged at the top end of the short installation pipe, an oil inlet hose is connected to the oil inlet valve, the other end of the oil inlet hose is connected with a sampling oil cylinder, one end of the sampling oil cylinder is provided with an exhaust valve, the other end of the sampling oil cylinder is connected with a transmission air cylinder, the sampling oil cylinder and the transmission air cylinder are both installed inside the shielding case support, an insulating pad is arranged at the bottom of the sampling oil cylinder and the transmission air. The invention relates to an oil static on-line monitoring and information evaluation system, which makes up the monitoring of oil product danger in a high-speed large-capacity centralized refueling place, standardizes the loopholes on safety and reliability and gives consideration to the reasonable requirements of safe economic flow rate, integrates a static on-line monitoring technology and a static expert information system, and improves the pipeline static digital management capability.
Description
Technical Field
The invention relates to the field of petroleum equipment, in particular to a petroleum static on-line monitoring and information evaluation system.
Background
In the refining, storage and transportation processes of petroleum products such as jet fuel, benzene, gasoline, kerosene, naphtha, diesel oil and the like, flowing static electricity is the most unmanageable hidden fire source. At present, the general countermeasure at home and abroad is to limit the oiling speed, the measure not only limits the operation of high-speed large-capacity centralized oiling places, but also does not stop the static accidents of similar operation places, and the reason is that the static electrification is not only related to the flow velocity, but also related to various factors such as the electrification tendency of oil products, the conductivity of the oil products and the like.
The current safe flow rate is limited to the clean product oil specification, but its use is questioned in two cases: firstly, when oil factors are changed (such as the increase of free water or ionized impurities) and the charging tendency of the oil is increased unexpectedly; and secondly, in places with normal oil product factors and low charging tendency, the safe and economic flow rate recommended by other countries and the like can be used for properly improving the field operation flow rate.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an oil static on-line monitoring and information evaluation system.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to an oil static online monitoring and information evaluation system which comprises a mounting short pipe, wherein a micro-current information sensor and an oil inlet valve are respectively mounted on the mounting short pipe, a shielding case support is arranged at the top end of the mounting short pipe, an oil inlet hose is connected to the oil inlet valve, the other end of the oil inlet hose is connected with a sampling oil cylinder, one end of the sampling oil cylinder is provided with an exhaust valve, the other end of the sampling oil cylinder is connected with a transmission air cylinder, the sampling oil cylinder and the transmission air cylinder are both mounted inside the shielding case support, the bottom of the sampling oil cylinder and the transmission air cylinder are provided with insulating pads, and the outer.
As a preferred technical scheme of the invention, an insulating flange is arranged at the bottom of the shielding case bracket, and the oil inlet hose penetrates through the insulating flange and is connected with the sampling oil cylinder.
As a preferred technical scheme of the invention, the end part of the sampling oil cylinder is provided with an insulating joint and is connected with the transmission cylinder.
As a preferred technical scheme of the invention, a reversing valve and an input/output terminal row are respectively arranged in the explosion-proof control box, a micro-charge amplification transmitter and a micro-current amplification transmitter are respectively arranged on the input/output terminal row, the external part of the input/output terminal row is connected with a power supply, a pressure regulating valve is connected with the external part of the reversing valve, and an air source is connected with the pressure regulating valve.
As a preferred technical scheme of the invention, an inner barrel type collector is arranged inside the installation short pipe, an insulation bushing is sleeved outside the inner barrel type collector, an explosion-proof threading box is arranged outside the micro-current information sensor, a pressing ring type insulation sealing element is connected between the explosion-proof threading box and the installation short pipe, an electrode connecting rod is arranged inside the pressing ring type insulation sealing element, and a signal cable is connected to one side of the explosion-proof threading box.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides combined type static on-line measuring equipment on an operation site, which consists of a combined type static sensor, a data communication and static expert system, wherein the combined type static sensor consists of a micro-current static sensor and a Faraday cylinder charge acquisition sensor, the combined type static sensor provides a static information continuous detection signal, and the Faraday cylinder charge acquisition sensor provides a static charge density timely sampling signal;
2. the invention is transmitted to the data processing system of the workstation by two groups of signal transmitters, completes data processing and storage, and provides the data to an 'electrostatic expert system' in time to complete the calibration of the correlation between the micro-current and the charge density of the Faraday cylinder, so that the functional relation is established between the micro-current data of the sensor and the micro-charge data, thereby realizing the conversion from continuous micro-current signals to real-time on-line charge density and realizing the continuous display of the charge density;
3. according to the invention, the evaluation of the static safety of the field operation and the recommendation of the maximum safe flow rate are provided timely for the field monitoring data and the operation object, so that the novel management of the safe and economic flow rate is realized in a high-speed large-capacity centralized refueling place;
4. the invention relates to an oil static on-line monitoring and information evaluation system, which makes up the monitoring of oil product danger in a high-speed large-capacity centralized refueling place, standardizes the loopholes on safety and reliability and gives consideration to the reasonable requirements of safe economic flow rate, integrates a static on-line monitoring technology and a static expert information system, and improves the pipeline static digital management capability.
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 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the explosion-proof control box of the invention;
FIG. 3 is a schematic view of the micro-current information sensor connection structure of the present invention;
FIG. 4 is a schematic view of a multi-point measurement implementation of the present invention;
FIG. 5 is a schematic diagram of a mobile combination multi-point measurement implementation of the present invention;
in the figure: 1. installing short pipes; 2. a micro-current information sensor; 3. an oil inlet valve; 4. an oil inlet hose; 5. an insulating flange; 6. an insulating pad; 7. sampling an oil cylinder; 8. an exhaust valve; 9. a shield support; 10. an insulated joint; 11. a transmission cylinder; 12. an explosion-proof control box; 13. an explosion-proof box; 14. a micro-charge amplification transmitter; 15. a micro-current amplification transmitter; 16. an input/output terminal row; 17. a pressure regulating valve; 18. an inner barrel type collector; 19. an insulating bushing; 20. a press ring type insulating seal; 21. an electrode connecting rod; 22. an explosion-proof threading box; 23. a signal cable.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
As shown in figures 1-5, the invention provides an oil static online monitoring and information evaluation system, which comprises a short installation pipe 1, wherein a micro-current information sensor 2 and an oil inlet valve 3 are respectively installed on the short installation pipe 1, a shielding case bracket 9 is arranged at the top end of the short installation pipe 1, an oil inlet hose 4 is connected to the oil inlet valve 3, the other end of the oil inlet hose 4 is connected with a sampling oil cylinder 7, one end of the sampling oil cylinder 7 is provided with an exhaust valve 8, the other end of the sampling oil cylinder 7 is connected with a transmission air cylinder 11, the sampling oil cylinder 7 and the transmission air cylinder 11 are both installed inside the shielding case bracket 9, the bottom of the sampling oil cylinder and the transmission air cylinder 11 are provided with.
Further, an insulating flange 5 is arranged at the bottom of the shielding cover bracket 9, an oil inlet hose 4 penetrates through the insulating flange 5 and is connected with a sampling oil cylinder 7, an insulating joint 10 is arranged at the end part of the sampling oil cylinder 7 and is connected with a transmission air cylinder 11, a reversing valve 12 and an input/output terminal row 16 are respectively arranged inside an explosion-proof control box 13, a micro-charge amplifying transmitter 14 and a micro-current amplifying transmitter 15 are respectively arranged on the input/output terminal row 16, a power supply is connected with the outside of the micro-charge amplifying transmitter, a pressure regulating valve 17 is connected with the outside of the reversing valve 12, an air source is connected with the pressure regulating valve 17, an inner barrel type collector 18 is arranged inside the installation short pipe 1, an insulating bush 19 is sleeved outside the inner barrel type collector 18, an explosion-proof threading box 22 is arranged outside the micro-current information sensor 2, and, an electrode connecting rod 21 is arranged in the pressure ring type insulating sealing element 20, a signal cable 23 is connected to one side of an explosion-proof threading box 22, two paths of input signals of the equipment are transmitted to a field control box and are respectively a micro-current signal and a micro-charge signal, the micro-current signal and the micro-charge signal are converted into standard signals through a micro-current transmitter and a micro-charge transmitter in the control box and are transmitted to a PLC cabinet, an SI transmitter of the control box is connected to a current sensor 2 through a threading box, and a SQ transmitter of the control box is connected to an oil cylinder type Faraday cylinder 7.
Specifically, the equipment consists of a composite static on-line monitoring sensor, a data acquisition and communication controller (PLC), a static information processing system (workstation) and a static expert system (application on the workstation). The static online monitoring, data communication and timely inspection and calibration of the field refueling equipment can be realized, and the static online monitoring, data communication and timely inspection and calibration are integrated with a static expert information system, the safety degree of static electricity of field operation is confirmed, and the maximum safe economic flow rate which can be allowed under the condition of meeting the static safety precondition is recommended;
the composite electrostatic on-line monitoring sensor consists of a short installation pipe 1, a micro-current electrostatic information sensor 2 on the short pipe, a sampling oil cylinder 7 of an oil cylinder type Faraday cylinder charge acquisition sensor, a transmission air cylinder 11 of an air cylinder type charge acquisition driver and related accessories thereof; the micro-current electrostatic information sensor provides a continuous electrostatic information signal (current magnitude signal) for the measuring system, and the oil cylinder type Faraday cylinder charge acquisition sensor is used for timely detecting the discontinuous electrostatic information signal (charge magnitude signal);
the Faraday cylinder charge collecting and measuring sensor consists of a plunger type oil cylinder, an insulating joint, an insulating pad, an insulating flange, an exhaust valve, an outer shield cover and a bracket, wherein sampling of oil inlet and outlet charges is implemented by a cylinder driver, a reversing valve and a pressure regulating valve in a controller, gas in the cylinder at the initial stage of installation of the charge measuring oil cylinder is exhausted by an upper exhaust valve, and an unconventional Faraday cylinder charge collecting and measuring system consists of the structure, and oil inlet and outlet, charge measurement, signal amplification and transmission, remote transmission (communication) of measured data and the like are carried out according to the instruction of the controller, so that the sampled charges are directly converted into the charge quantity of unit volume, namely the charge density (mu C/m3) in a data processing system because the oil inlet sampling volume is known;
the micro-charge measurement adopts a micro-charge amplifier and a transmitter with high input impedance, signals are remotely transmitted to a PLC cabinet through a control box for data acquisition and an electrostatic expert system (workstation) for data analysis and storage (see attached figure 1), and due to the fact that micro-current electrostatic information (continuous quantity) and charge density electrostatic information signals (discontinuous) have correlation, real-time online data (mu C/m3) of current operation static electricity is timely given after data processing and electrostatic expert consultation system evaluation, namely continuous electrostatic information is used for replacing discontinuous electrostatic information for real-time display;
the data acquisition and control device consists of an I/O unit of the controller, a gas circuit reversing valve, a pressure regulator, an explosion-proof control box, a micro-charge amplification transmitter and a micro-current amplification transmitter, and has the functions of executing start-stop control of sampling measurement according to instructions and directly transmitting online data of the composite electrostatic sensor to an electrostatic information processing system of a workstation;
the micro-current electrostatic information sensor consists of an inner-cylinder type collector 18, a collector insulation bush 19, an explosion-proof cable joint shell, a micro-current signal cable, an electrode connecting rod and a pressure ring type insulation sealing element, wherein the inner-cylinder type collector 18 is used for continuously picking up an information signal of flowing current of a pipeline, and the signal can continuously reflect the change of the charge density of the system after being input into the PLC and the information processing system;
according to relevant control limits or expert data recommended at home and abroad, the following 2 criteria are provided for evaluation, and the criteria are online charge density: the tank car takes 30 mu C/m3 as a measurement limit, and the rest containers are calculated and recommended according to relevant expert data, and the safe economic flow rate is as follows: based on the original recommended formula of relevant safe flow rate of German physical technology research institute and Japan electrostatic safety guideline, the safe economic flow rate of different container sizes is recommended;
the system is suitable for single-point refueling places such as a refueling pavilion and the like, and is also suitable for group vehicle refueling and tank area multipoint refueling places such as a refueling trestle, a fuel depot and the like. The remote transmission monitoring and centralized supervision of on-site electrostatic information can be realized by means of a network communication system, if an air source of 0.3-1.0 MPa is not available in an operation site, a transmission cylinder 11 of the cylinder type driver can also be directly driven by an electric cylinder driver or a stepping motor to replace the cylinder, a charge density on-line monitoring device (SQ) is used for simultaneously considering the calibration and the inspection of a multipoint microcurrent electrostatic information sensor (Si), and the installation of the charge acquisition sensor and the charge acquisition driver can adopt an on-site fixed installation mode or a movable connection installation mode; the vertical type combined connection installation mode or the horizontal type combined connection installation mode can be adopted;
when a Faraday cage is used to measure the charge density in a pipeline, clicking a measurement key system on a workstation automatically completes the following operation steps:
① the pneumatic change valve drives the cylinder plunger to pull up, the connecting rod drives the cylinder plunger to pull up to sample the oil, when the movable plunger reaches the maximum stroke, the sampling is automatically stopped.
② the plunger of oil cylinder is pulled up into oil, the sampled charge is automatically uploaded to the charge amplifier of controller by induction principle, and after signal transmission, it is transmitted to PLC control cabinet in standard signal mode and is analyzed and processed by the static expert processing system of operation workstation.
③ when oil is fed, the micro-current sensor continuously transmits the flowing current information to the micro-current amplifier and signal transmitter of the controller, and transmits the information to the operation workstation for data processing via PLC.
(3) When the oil grade is switched or the correlation between the micro-current electrostatic information and the charge sensor needs to be verified again after long-term use, the following operations are required:
① according to the operation instruction (2), the Faraday cage static charge density measurement is carried out, so that the micro-current data and the micro-charge data of the sensor are stored in the data processing system of the workstation again to establish a new functional relationship.
② click on the "calibrate" switch of the workstation to cause the information handling system to enter recalibration and modification.
③ are automatically converted into real-time online data in units of "μ C/m 3" by the calibration signals provided in the program ②, and are displayed, maintained and stored online at the right time.
(4) After the calibration is finished, clicking a calibration end key of the operation workstation, and at the moment: firstly, a cylinder reversing valve of a controller automatically completes air inlet and outlet switching, a cylinder plunger is pushed outwards, and oil sampled by an oil cylinder is pushed back to a pipeline; the two charge amplifier input ends automatically complete grounding short circuit operation (return to zero) through a high input impedance switch.
(5) Operations requiring maintenance of the system and service:
when the electric part of the measuring system has a fault or the oil circuit has a leakage phenomenon, the following procedures are required for maintenance and operation:
① close the oil inlet valve and the oil return valve, cut off the power supply of the workstation, and then perform maintenance or replacement of the oil circuit or the circuit system.
② when the fault is removed and the system can be used normally, the oil inlet valve and the oil return valve are switched again to keep the oil inlet and outlet channels in normally open position.
③ when the oil circuit system has no leakage, the workstation power supply is switched on, and the exhaust valve of the oil cylinder is tried to be opened, the residual gas in the oil cylinder is confirmed, and the system can be confirmed to be put into use again after the exhaust valve is closed.
The technology makes up for the monitoring of oil product danger in high-speed large-capacity centralized refueling places, standardizes the loopholes in safe reliability and considers the reasonable requirements of safe economic flow rate, fuses the static online monitoring technology and the static expert information system, and improves the pipeline static digital management capacity.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides an oil static on-line monitoring and information evaluation system, includes installation nozzle stub (1), its characterized in that, install little current information sensor (2) and inlet valve (3) on installation nozzle stub (1) respectively, the top of installation nozzle stub (1) is provided with shield cover support (9), be connected with oil feed hose (4) on inlet valve (3), the other end of oil feed hose (4) is connected with sampling hydro-cylinder (7), discharge valve (8) are installed to the one end of sampling hydro-cylinder (7), and the other end is connected with transmission cylinder (11), sampling hydro-cylinder (7) and transmission cylinder (11) are all installed in the inside of shield cover support (9), and the bottom is provided with insulating pad (6), the outside of shield cover support (9) is connected with explosion-proof control box (13).
2. The oil static on-line monitoring and information evaluation system of claim 1, characterized in that, the bottom of shield cover support (9) is provided with insulating flange (5), oil feed hose (4) run through insulating flange (5) and be connected with sampling hydro-cylinder (7).
3. The on-line petroleum static monitoring and information evaluation system as claimed in claim 1, characterized in that the end of the sampling cylinder (7) is provided with an insulating joint (10) and is connected with a transmission cylinder (11).
4. The system for on-line monitoring and information evaluation of petroleum static electricity according to claim 1, characterized in that a reversing valve (12) and an input and output terminal row (16) are respectively arranged inside the explosion-proof control box (13), a micro-charge amplification transmitter (14) and a micro-current amplification transmitter (15) are respectively arranged on the input and output terminal row (16), a power supply is connected to the outside of the input and output terminal row, a pressure regulating valve (17) is connected to the outside of the reversing valve (12), and an air source is connected to the pressure regulating valve (17).
5. The oil static on-line monitoring and information evaluation system according to claim 1, characterized in that an inner barrel type collector (18) is arranged inside the installation short pipe (1), an insulation bush (19) is sleeved outside the inner barrel type collector (18), an explosion-proof threading box (22) is arranged outside the micro-current information sensor (2), a pressure ring type insulation sealing element (20) is connected between the explosion-proof threading box (22) and the installation short pipe (1), an electrode connecting rod (21) is arranged inside the pressure ring type insulation sealing element (20), and a signal cable (23) is connected to one side of the explosion-proof threading box (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911270115.1A CN110763924A (en) | 2019-12-12 | 2019-12-12 | Petroleum static on-line monitoring and information evaluation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911270115.1A CN110763924A (en) | 2019-12-12 | 2019-12-12 | Petroleum static on-line monitoring and information evaluation system |
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| Publication Number | Publication Date |
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| CN110763924A true CN110763924A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911270115.1A Pending CN110763924A (en) | 2019-12-12 | 2019-12-12 | Petroleum static on-line monitoring and information evaluation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505400A (en) * | 2020-04-29 | 2020-08-07 | 中煤科工集团重庆研究院有限公司 | Testing method for testing wall surface static electricity of dust-containing gas conveying pipeline |
-
2019
- 2019-12-12 CN CN201911270115.1A patent/CN110763924A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505400A (en) * | 2020-04-29 | 2020-08-07 | 中煤科工集团重庆研究院有限公司 | Testing method for testing wall surface static electricity of dust-containing gas conveying pipeline |
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