CN103163856A - Nitrogen foam fracturing pump truck electronic control system based on controller area network (CAN) bus - Google Patents
Nitrogen foam fracturing pump truck electronic control system based on controller area network (CAN) bus Download PDFInfo
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- CN103163856A CN103163856A CN2011104269687A CN201110426968A CN103163856A CN 103163856 A CN103163856 A CN 103163856A CN 2011104269687 A CN2011104269687 A CN 2011104269687A CN 201110426968 A CN201110426968 A CN 201110426968A CN 103163856 A CN103163856 A CN 103163856A
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Abstract
The invention provides a nitrogen foam fracturing pump truck electronic control system based on a controller area network (CAN) bus, and aims to overcome defects of an existing liquid nitrogen foam fracturing pump truck electronic control system caused by adoption of a traditional control method. According to the nitrogen foam fracturing pump truck electronic control system based on the CAN bus, an IQAN- MDM main control module, an IQAN- XP module, an IQAN-XT module, a touch screen, a diesel engine set electronic control unit (ECU) and a direct-fired evaporator temperature control unit are respectively provided with a CAN port, and a distributed field control system is formed through connection of the CAN bus. A pressure sensor and a temperature sensor are installed so as to achieve whole control of an electronic control system. Working parameters of equipment during fracturing operation are collected by the IQAN- XP module through the temperature sensor and the pressure sensor, and the collected data are transferred to the IQAN- MDM main control module and are displayed on the touch screen after being processed. The nitrogen foam fracturing pump truck electronic control system based on the CAN bus has the advantages that all the data are transferred to be displayed on the touch screen through one CAN bus, reliability is high, and breakdowns such as loose connection and poor contact which commonly seen on a vehicle-mounted system are greatly reduced.
Description
Technical field
The present invention relates to a kind of oil and gas development preparation of construction liquid nitrogen foam fracturing pump truck electric-control system, especially relate to a kind of nitrogen foam pressure break pump truck electric-control system based on the CAN bus.
Background technology
Liquid nitrogen foam fracturing pump truck is the nucleus equipment of foam fracturing car group, and the high pressure that satisfies the construction technology needs, the task of large discharge capacity nitrogen of providing is provided.The complex structure of liquid nitrogen foam fracturing pump truck own comprises: with the infusion system of liquid nitrogen supercharging, high-pressure liquid nitrogen is changed into the vapo(u)rization system of high pressure nitrogen, keep manifold and throttling and the control pressurer system etc. of liquid nitrogen container internal pressure balance; In addition, liquid nitrogen foam fracturing pump truck also comprises power system, mechanical speed change governing system and delivery system.Control system as car load, need gather the signal of above-mentioned each system and controlled on request, because equipment is complicated, determined that its control system has following features: (1) collection signal is many: the signal wire that traditional control system is used is many, connecting joint is many, makes the mutual interference of various signal phase; (2) traditional control mode, each road signal demand carries out drive amplification, and signal is processed complicated, has influence on the quality of control system; (3) be high pressure, large flow liquid nitrogen/nitrogen gas medium in the direct combustion evaporator, in the frac job process, load change causes the temperature fluctuation; (4) liquid nitrogen foam fracturing pump truck belongs to the engineering equipment of field work, the site work inclement condition, and simultaneously equipment will have the travelling performance under original geomorphologic conditions, and vibration strength, the environmental suitability of various connections had specific (special) requirements.
Summary of the invention
the deficiency that adopts traditional control method to exist in order to overcome existing liquid nitrogen foam fracturing pump truck control system, the invention provides a kind of nitrogen foam pressure break pump truck electric-control system based on the CAN bus, should a kind of integrated control technology have been proposed based on the nitrogen foam pressure break pump truck electric-control system of CAN bus, namely gather the various signals of liquid nitrogen pump vehicle, pass through master processor processes, liquid nitrogen pump vehicle is controlled, corresponding electric-control system is with main control unit, I/O unit, power supply and drive amplification integrate, and data are added up, analyze, realize on-line monitoring, and the direct combustion evaporator temperature is controlled automatically.
The technical solution adopted for the present invention to solve the technical problems is: the nitrogen foam pressure break pump truck electric-control system based on the CAN bus comprises temperature sensor, pressure transducer, the IQAN-MDM main control module of electric-control system, IQAN-XP module, IQAN-XT module, touch-screen, diesel engine unit ECU, direct combustion evaporator temperature conditioning unit all have the CAN interface, connect to form distributed field control system by the CAN bus, setting pressure sensor, temperature sensor realize that the integral body of electric-control system is controlled; The IQAN-MDM main control module is the master controller of electric-control system, and completion logic is controlled and complicated data operation is processed; The IQAN-XP module measures by temperature sensor, pressure transducer the running parameter that gathers equipment in the frac job process, and image data carries out being shown on touch-screen after data are processed in the IQAN-MDM main control module by the CAN bus transfer.
IQAN-MDM main control module, IQAN-XP module, IQAN-XT module, touch-screen form Distributed C AN bus system, actual pressure, temperature data transmitted in both directions on the CAN bus, and be presented on touch-screen; Pressure, temperature etc. can be set control the upper and lower bound of parameter, alarm logging also carries out sound and light alarm.
IQAN-XT module and diesel engine unit ECU with the communication of J1939 agreement, obtain the running parameter of diesel engine unit by the CAN bus, are shown on touch-screen, and startup that can be by the total line traffic control diesel engine of CAN, stop, and implement fault inquiry.
Temperature sensor is thermopair, and wherein: supercharge pump suction inlet temperature sensor, liquid nitrogen pump suction inlet temperature sensor are N-type, and evaporator nitrogen discharge temperature sensor is the K type.K type thermocouple temperature sensor band cold junction compensation; Adopt integrated temperature sensor AD590 testing environment temperature in cold junction compensation circuit, it is+0.1% that compensating resistance adopts precision, and temperature coefficient is the precision resistance of 25PPM/ ℃.
Direct combustion evaporator temperature conditioning unit comprises ignition transformer, ultraviolet light sensing tube, flame detector, temperature controller, ignition switch solenoid valve, big fire switch electromagnetic valve.Temperature controller is based on the control system of S3C2410 (Samsung company is based on 32 8-digit microcontrollers of the ARM920T processor core of ARM company), adopt chip SJA1000 expansion CAN bus interface, be connected to the CAN bus by this interface, become a node of bus system, obtain operating personnel from touch-screen given design temperature and observed temperature.One delivery outlet of temperature controller connects the ignition transformer trigger winding, lights the burner in evaporator; Ultraviolet light sensing tube connects flame detector, is used for temperature controlled processes flame and detects, and detection signal is connected to an input port of temperature controller with the form of closed node.Temperature controller is that pulse regulation is controlled, and each combustion nozzle system is comprised of large flow burner and igniter burner, and igniter burner remains burning after being ignited by the ignition switch solenoid valve; Temperature controller, is regulated the ON time of the big fire switch electromagnetic valve in the fixed cycle and is adjusted the fuel amount after the PID computing according to observed temperature by a delivery outlet, realize that evaporator temperature controls automatically.
Touch-screen is red lion G310 human-computer interaction terminal, onboard flash memory card expansion slot and USB mouth; Touch-screen is prepared the CAN bus interface module, becomes a node of bus; Operational factor shows, reports to the police in realizing the frac job process, controls on the setting basis of parameter, data can be stored in flash card, and can pass through USB mouth high-speed downloads, the data analysis after being convenient to frac job and completing.
The invention has the beneficial effects as follows, the distributed field bus architecture that has adopted IQAN (Parker Hannifin, a kind of electronic control system of Parker Hannifin Corporation) module to form, the built-in drive amplification circuit of IQAN has advantages of high integration; The IQAN-XP module be installed to survey sensor near, greatly shortened sensor signal lines and directly arrived the length of operator's console, and avoided signal mutually to disturb the error of bringing; All data output to touch-screen by a CAN bus and show, reliability is high, have greatly reduced the frequent connection that occurs of onboard system and have become flexible faults such as reaching loose contact.
Another effect of this invention is that the direct combustion evaporator temperature conditioning unit of design can realize that the temperature in the frac job process is controlled automatically, does not rely on operating personnel's skill level, has improved security.
Description of drawings
Fig. 1 is the nitrogen foam pressure break pump truck electrical control system structure block diagram that the present invention is based on the CAN bus.
Fig. 2 is the temperature survey schematic diagram that the present invention is based on the nitrogen foam pressure break pump truck electric-control system of CAN bus.
Fig. 3 is the direct combustion evaporator temperature conditioning unit structured flowchart that the present invention is based on the nitrogen foam pressure break pump truck electric-control system of CAN bus.
In figure: 1.IQAN-MDM main control module, 2.IQAN-XP module, 3.IQAN-XT module, 4. touch-screen, 5. diesel engine unit ECU, 6. direct combustion evaporator temperature conditioning unit, 7. pressure transducer, 8. temperature sensor, 9. ignition transformer, 10. ultraviolet light sensing tube, 11. flame detector, 12. temperature controllers, 13. ignition switch solenoid valves, 14. the big fire switch electromagnetic valve, the 15.CAN bus.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.But what those skilled in the art should know is to the invention is not restricted to listed embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.
Referring to Fig. 1.the present invention is based on the nitrogen foam pressure break pump truck electric-control system electric-control system of CAN bus, IQAN-MDM main control module 1, IQAN-XP module 2, IQAN-XT module 3, touch-screen 4, diesel engine unit ECU (Eletronic Control Unit electronic control unit) 5, direct combustion evaporator temperature conditioning unit 6 all has CAN (Controller Area Network controller local area network) interface, connect to form distributed field control system by CAN bus 15, setting pressure sensor 7, temperature sensor 8, adopt the CAN bus communication, realize the integral body control of electric-control system.
IQAN-MDM main control module 1 is the master controller of electric-control system, and completion logic is controlled and complicated data operation is processed; IQAN-XP module 2 measures by temperature sensor 8, pressure transducer 7 running parameter that gathers equipment in the frac job process, and image data is transferred to by CAN bus 15 carries out in IQAN-MDM main control module 1 being shown on touch-screen 4 after data are processed.
The Distributed C AN bus system that IQAN-MDM main control module 1, IQAN-XP module 2, IQAN-XT module 3, touch-screen 4 form, actual pressure, temperature data transmitted in both directions on CAN bus 15, and be presented on touch-screen 4; Pressure, temperature etc. can be set control the upper and lower bound of parameter, alarm logging, and carry out sound and light alarm.
IQAN-XT module 3 by CAN bus 15, with the communication of J1939 agreement, obtains the running parameter of diesel engine unit ECU5 with diesel engine unit ECU5, be shown on touch-screen 4, and can by CAN bus 15 control diesel engines startup, stop, implementing fault inquiry.
Referring to Fig. 2.Temperature sensor 8 is thermopair, and wherein: supercharge pump suction inlet temperature sensor, liquid nitrogen pump suction inlet temperature sensor are N-type, and evaporator nitrogen discharge temperature sensor is the K type.K type thermocouple temperature sensor 8 band cold junction compensations; Adopt integrated temperature sensor AD590 testing environment temperature in cold junction compensation circuit, it is+0.1% that compensating resistance adopts precision, and temperature coefficient is the precision resistance of 25PPM/ ℃.
Referring to Fig. 3.Direct combustion evaporator temperature conditioning unit 6 comprises: ignition transformer 9, ultraviolet light sensing tube 10, flame detector 11, temperature controller 12, ignition switch solenoid valve 13, big fire switch electromagnetic valve 14.Temperature controller 12 is the control system based on S3C2410 (Samsung company is based on 32 8-digit microcontrollers of the ARM920T processor core of ARM company), adopt chip SJA1000 expansion CAN bus interface, be connected to CAN bus 15 by this interface, become a node of bus system, obtain operating personnel from touch-screen given design temperature and observed temperature.
One delivery outlet of temperature controller 12 connects ignition transformer 9 trigger windings, lights the burner in evaporator; Ultraviolet light sensing tube 10 connects flame detector 11, is used for temperature controlled processes flame and detects, and detection signal is connected to an input port of temperature controller 12 with the form of closed node.Temperature controller 12 is controlled for pulse regulation, and each combustion nozzle system is comprised of large flow burner and igniter burner, and igniter burner remains burning after being ignited by ignition switch solenoid valve 13; Temperature controller 12, is regulated the ON time of the big fire switch electromagnetic valve 14 in the fixed cycle and is adjusted the fuel amount after the PID computing according to observed temperature by a delivery outlet, realize that evaporator temperature controls automatically.
The touch-screen 4 that the present invention is based on the nitrogen foam pressure break pump truck electric-control system of CAN bus is selected red lion G310 human-computer interaction terminal, onboard flash memory card expansion slot and USB mouth; Touch-screen 4 is prepared the CAN bus interface modules, becomes a node of bus; Operational factor shows, reports to the police in realizing the frac job process, controls on the setting basis of parameter, data can be stored in flash card, and can pass through USB mouth high-speed downloads, the data analysis after being convenient to frac job and completing.
Embodiment:
Referring to Fig. 1, the CAN interface that connects respectively IQAN-MDM main control module 1, IQAN-XP module 2, IQAN-XT module 3, touch-screen 4, diesel engine unit ECU5, direct combustion evaporator temperature conditioning unit 6 with a CAN bus cable, form distributed field bus system, realize that data transmission is shared; Connect the CAN interface of IQAN-XT module 3 and the CAN interface of diesel engine unit ECU5 with another root CAN cable, obtain the state parameter of unit by the J1939 agreement, and startup that can be by total line traffic control diesel engine unit ECU5, stop.
Be distributed in the temperature sensor 8 on the equipment such as supercharge pump, liquid nitrogen pump, direct combustion evaporator, the data acquisition mouth that pressure transducer 7 is connected to IQAN-XP module 2, be shown on touch-screen 4 by the CAN bus.
Touch-screen 4 is red lion G310 human-computer interaction terminal, configuration Development of Configuration Software human-computer interaction interface.The temperature, the pressure display interface that comprise each control point of supercharge pump, liquid nitrogen pump, direct combustion evaporator, high pressure, high temperature alarm prompting, evaporator temperature is set and the condition monitoring interface, the demonstration of cluster engine state parameter, on off control and diagnostic trouble code query interface.And can be according to actual needs, Configuration Online regularly is saved in service data in built-in flash memory, is used for the construction operation operating mode and reviews.
Adopt integrated temperature sensor AD590 testing environment temperature in cold junction compensation.AD590 is the electric current output temperature sensor, and principal feature is that output impedance is very high.25 ℃ of electric current outputs that 298.2 μ A are arranged, sensitivity is that 1 μ A/ ℃, precision representative value are 0.3 ℃～1.5 ℃.
For environment temperature is compensated, the voltage that needs to produce equals the thermoelectrical potential of thermopair when 0 ℃～50 ℃ of environment temperatures.For K type thermocouple temperature sensor, compensating resistance R gets 39.7 Ω.Flow through voltage that resistance R forms of the electric current of AD590 adds the thermoelectrical potential of thermopair this moment, can reach the purpose of temperature compensation.It is+0.1% that R adopts precision, and temperature coefficient is the precision resistance of 25PPM/ ℃.
The trigger winding of ignition transformer 9 is connected on the temperature controller control panel, and ultraviolet light sensing tube 10 is connected to flame detector 11, and the detection contact of flame detector 11 is connected on the control panel of temperature controller 12.After flame being detected, detect the closing of contact, temperature controller 12 obtains the signal that ignites, and stops triggering ignition transformer 9.Temperature controller 12 is by the CAN bus interface in control panel, and the temperature that obtains setting and the temperature of actual measurement by pid algorithm, are controlled the ON time of big fire switch electromagnetic valve 14 in the fixed cycle, realize the automatic control of temperature.In temperature controlled processes, ignition switch solenoid valve 13 is with conducting always.This control mode is that pulse is controlled, and selects suitable control cycle, can reach equally the effect of continuous adjusting, and the system that consists of is simple, and is easy to maintenance.
The present invention is based on the nitrogen foam pressure break pump truck electric-control system of CAN bus, the distributed field bus architecture that has adopted the IQAN module to form.The built-in drive amplification circuit of IQAN has advantages of high integration.The IQAN-XP module be installed to survey sensor near, greatly shortened sensor signal lines and directly arrived the length of operator's console, and avoided signal mutually to disturb the error of bringing.All data output to touch-screen by a CAN bus and show, reliability is high, have greatly reduced the frequent connection that occurs of onboard system and have become flexible faults such as reaching loose contact.
Pressure transducer adopts 4 lead-in wire assemblings of bridge structure, adopts mode, the thermocouple temperature sensor metering circuit band cold junction compensation of ratio measure, has further improved measuring accuracy.
By the CAN bus, with the communication of J1939 agreement, obtain the running parameter of diesel engine unit and be shown on touch-screen, operating personnel grasp the state of unit at any time, go wrong, and can pinpoint the problems fast by failure code, fix a breakdown.
Touch-screen onboard flash memory card can be stored service data in the frac job process, and can pass through USB mouth high-speed downloads, the data analysis after being convenient to frac job and completing.
In evaporator, temperature is controlled to be pulse regulation control, and the ON time of the large burner fuel path switch valve in each fixed cycle of temperature regulating and controlling is regulated the fuel amount, realizes that in evaporator, temperature is controlled automatically.
It should be noted that above-described embodiment is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.
Claims (7)
1. nitrogen foam pressure break pump truck electric-control system based on the CAN bus, comprise temperature sensor, pressure transducer, it is characterized in that: the IQAN-MDM main control module (1) of electric-control system, IQAN-XP module (2), IQAN-XT module (3), touch-screen (4), diesel engine unit ECU (5), direct combustion evaporator temperature conditioning unit (6) all has the CAN interface, connect to form distributed field control system by CAN bus (15), setting pressure sensor (7), temperature sensor (8), realize the integral body control of electric-control system,
Described IQAN-MDM main control module (1) is the master controller of electric-control system, and completion logic is controlled and complicated data operation is processed;
Described IQAN-XP module (2) measures by temperature sensor (8), pressure transducer (7) running parameter that gathers equipment in the frac job process, and image data is transferred to by CAN bus (15) carries out in IQAN-MDM main control module (1) being shown on touch-screen (4) after data are processed.
2. according to claim 1 based on the nitrogen foam pressure break pump truck electric-control system of CAN bus, it is characterized in that: described IQAN-MDM main control module (1), IQAN-XP module (2), IQAN-XT module (3), touch-screen (4) form Distributed C AN bus system, actual pressure, temperature data transmitted in both directions on CAN bus (15), and be presented on touch-screen (4); Pressure, temperature etc. can be set control the upper and lower bound of parameter, alarm logging also carries out sound and light alarm.
3. arbitrary described nitrogen foam pressure break pump truck electric-control system based on the CAN bus according to claim 1 and 2, it is characterized in that: described IQAN-XT module (3) is passed through CAN bus (15) with diesel engine unit ECU (5), with the communication of J1939 agreement, obtain the running parameter of diesel engine unit ECU (5), be shown on touch-screen (4), and can by CAN bus (15) control diesel engine startup, stop, implementing fault inquiry.
4. according to claim 3 based on the nitrogen foam pressure break pump truck electric-control system of CAN bus, it is characterized in that: described temperature sensor (8) is thermopair, wherein: supercharge pump suction inlet temperature sensor, liquid nitrogen pump suction inlet temperature sensor are N-type, and evaporator nitrogen discharge temperature sensor is the K type.
5. according to claim 4 based on the nitrogen foam pressure break pump truck electric-control system of CAN bus, it is characterized in that: described K type thermocouple temperature sensor (8) band cold junction compensation; Adopt integrated temperature sensor AD590 testing environment temperature in cold junction compensation circuit, it is+0.1% that compensating resistance adopts precision, and temperature coefficient is the precision resistance of 25PPM/ ℃.
6. according to claim 1 based on the nitrogen foam pressure break pump truck electric-control system of CAN bus, it is characterized in that: described direct combustion evaporator temperature conditioning unit (6) comprises ignition transformer (9), ultraviolet light sensing tube (10), flame detector (11), temperature controller (12), ignition switch solenoid valve (13), big fire switch electromagnetic valve (14);
Temperature controller (12) is the control system based on S3C2410, adopt chip SJA1000 expansion CAN bus interface, be connected to CAN bus (15) by this interface, become a node of bus system, obtain operating personnel from touch-screen given design temperature and observed temperature;
One delivery outlet of temperature controller (12) connects ignition transformer (9) trigger winding, lights the burner in evaporator; Ultraviolet light sensing tube (10) connects flame detector (11), is used for temperature controlled processes flame and detects, and detection signal is connected to an input port of temperature controller (12) with the form of closed node;
Temperature controller (12) is controlled for pulse regulation, and each combustion nozzle system is comprised of large flow burner and igniter burner, and igniter burner remains burning after being ignited by ignition switch solenoid valve (13); Temperature controller (12), is regulated the ON time of the big fire switch electromagnetic valve (14) in the fixed cycle and is adjusted the fuel amount after the PID computing according to observed temperature by a delivery outlet, realize that evaporator temperature controls automatically.
7. according to claim 1 based on the nitrogen foam pressure break pump truck electric-control system of CAN bus, it is characterized in that: described touch-screen (4) is red lion G310 human-computer interaction terminal, onboard flash memory card expansion slot and USB mouth; Touch-screen (4) is prepared the CAN bus interface module, becomes a node of bus; Operational factor shows, reports to the police in realizing the frac job process, controls on the setting basis of parameter, data can be stored in flash card, and can pass through USB mouth high-speed downloads, the data analysis after being convenient to frac job and completing.
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| CN2011104269687A CN103163856A (en) | 2011-12-15 | 2011-12-15 | Nitrogen foam fracturing pump truck electronic control system based on controller area network (CAN) bus |
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| CN2011104269687A CN103163856A (en) | 2011-12-15 | 2011-12-15 | Nitrogen foam fracturing pump truck electronic control system based on controller area network (CAN) bus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10273791B2 (en) | 2015-11-02 | 2019-04-30 | General Electric Company | Control system for a CO2 fracking system and related system and method |
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Application publication date: 20130619 |