CN1590971A - High low temperature on line gasoline cireulation testing system - Google Patents
High low temperature on line gasoline cireulation testing system Download PDFInfo
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Abstract
The present invention provedes a high-low-temp. on-line gasoline circulation testing sysem. Said system includes nitrogen gas supply unit, computer detection monitoring unit, oxygen content sensor, inflammable gas content sensor and temperature sensor, etc. For test box said invention adopts good seal and heat-insulating design, and adopts the nitrogen gas supply unit to timely regulate and control oxygen content and inflammable gas content in the test box and make them be controlled in the safety range, and adopts the computer detection monitoring unit to continuously detect and control temperature, oxygen content and inflammable gas content in the course of testing process.
Description
Technical field
The present invention relates to a kind of simulation test device of auto parts and components, relate in particular to the online gasoline cyclic test of a kind of high low temperature system.
Background technology
In automobile production, comprise the manufacturing of auto parts and components, all need to carry out a large amount of simulation tests.The environment for use aspect not only arranged, the reliability aspect is also arranged, as performance, intensity, life-span or the like.In product testing and research and development test, in order to reach the balance of quality and cost, dynamic comprehensive test is a development trend.
With vehicle key parts " EFI " is example, and the test standard according to German BOSCH company to the main parts size of EFI, as fuel pump bracket, distributing pipe assembly etc., requires test specimen to carry out high low temperature cyclic test under gasoline medium duty.In process of the test, test specimen will bear external temperature alternation (40 ℃-120 ℃) test simultaneously and internal work pressure is the gasoline cyclic test of 3-6ba, generally requires the test period continuous more than 300 hours.Very big danger is arranged during the thermocycling of test specimen under carrying out the fuel feeding state, gasoline medium volatilization and leakage easily in process of the test on the one hand, when high low temperature cycles test,, very easily cause the burning and the blast of gasoline on the other hand particularly at high-temperature area.Because have these hazards, this test is normally carried out in the online gasoline cyclic test of high low temperature case.Present domestic this kind equipment that still do not have.This class test all will be delivered to abroad and do, and not only spends a large amount of foreign exchanges, and the uncontrollable test period, has greatly influenced the test and the exploitation of home products.Owing to relate to factors such as technical know-how, more be unfavorable for the independent development of home products, be unfavorable for protecting the interests of development Domestic Automotive Industry.Even it is also expensive to introduce external relevant devices.
Summary of the invention
Purpose of the present invention is for a kind of online gasoline cyclic test of high low temperature system that can carry out the thermocycling under the fuel feeding state safely to auto parts and components is provided.
The technical measures that the present invention taked are: the online gasoline cyclic test of a kind of high low temperature system, comprise chamber, heat supply unit and refrigeration unit, the heat supply unit links to each other with chamber and is used for providing the required heat energy that heats up to the chamber inner chamber, refrigeration unit links to each other with chamber and is used for providing cooling institute chilling requirement to the chamber inner chamber, also comprise specimen test unit, nitrogen supply (NS) unit, bleed unit and COMPUTER DETECTION monitoring unit, and be arranged on oxygen level sensor, combustible gas content level sensor and temperature sensor in the chamber; Described specimen test unit comprises specimen test frame, oil supply mechanism and fuel feeding cooling body, the specimen test frame is installed in and is used for fixing test specimen in the chamber, oil supply mechanism is formed the cyclic test oil circuit by fuel pump, operation valve, survey sensor and fuel pipe and test specimen, and the fuel feeding cooling body is arranged in this cyclic test oil circuit and is used to cool off fuel oil; Described nitrogen supply (NS) unit links to each other with chamber and is used for providing nitrogen to the chamber inner chamber, comprises the solenoid valve of a control nitrogen supply (NS); The described unit of bleeding links to each other with chamber and is used for the gas of chamber inner chamber is extracted out; Described COMPUTER DETECTION monitoring unit is electrically connected with the heat supply unit and is used to control it and provides heat to chamber, be electrically connected with refrigeration unit and be used to control it and provide cold to chamber, be electrically connected with the unit of bleeding and be used to control it gas in chamber is extracted out, be electrically connected with the specimen test unit and be used to control its operation, be electrically connected the oxygen content that is used to detect in the chamber with oxygen level sensor, be electrically connected the combustible gas content that is used to detect in the chamber with the combustible gas content level sensor, be electrically connected the temperature that is used to detect in the chamber with temperature sensor, be electrically connected with the solenoid valve of nitrogen supply (NS) unit and be used to control it and provide nitrogen to chamber.
Described COMPUTER DETECTION monitoring unit comprises a programmable logic controller, and the control system of this controller is made up of S7-200 Programmable Logic Controller, CPU element, platinum resistance load module, analog quantity load module and man-machine interface touch-screen.
Described chamber comprises casing, chamber door and electronic lock, adopts double-deck fluororubber sealing strip sealing between the chamber door of chamber and the doorframe, and the doorframe heater strip is installed; On casing, be provided with a plurality of heat insulation bushing pipes that run through casing, be used for various pipes, line passes casing and enters inner chamber, seal with fluid sealant in the junction of heat insulation bushing pipe and casing; Electronic lock is installed on the chamber door and with the COMPUTER DETECTION monitoring unit and is electrically connected.
It is the controller of S7-226XM that described CPU element adopts model; It is the EM231 module that described platinum resistance load module adopts model, establishes the input of 2 tunnel platinum resistance; It is the EM231 module that described analog quantity load module adopts model, establishes the input of 4 tunnel analog quantitys; Described man-machine interface touch-screen is a TP170B color liquid crystal touch-screen.
Designed computing machine bitcom module in the described programmable logic controller, can realize communication easily with host computer based on free interface communication.
Be solidified with following control flow in the programmable logic controller of described COMPUTER DETECTION monitoring unit:
Before A, the chamber start, oxygen content and the combustible gas content in the check test case at first, when oxygen content≤3%, or combustible gas content≤20% o'clock, can directly enter c program; When oxygen content＞4%, or combustible gas content＞25% o'clock, next program entered;
B, when oxygen content＞4%, or combustible gas content＞25% o'clock, programmable logic controller provides control signal and opens solenoid valve, feed nitrogen, oxygen content and combustible gas content in the chamber are reduced gradually, when reaching oxygen content≤3%, or combustible gas content≤20% o'clock, programmable logic controller provides control signal and cuts out solenoid valve, stops the nitrogen input, enters next program;
C, when oxygen content≤3%, or combustible gas content≤20% o'clock, programmable logic controller provides control signal to the chamber operation of starting shooting, relevant automobile test specimen is carried out constant temperature or the online gasoline cyclic test of high low temperature, in test, by the COMPUTER DETECTION monitoring unit temperature of test and the elevation rate of temperature are controlled and detected in real time, and oxygen content in the chamber and combustible gas content carried out continuous detection, take place as non-fault in the test, then test is performed until end, as breaking down in the process of the test, then enter next program;
D, oxygen content 〉=4% appears in process of the test, and the duration surpasses 10 minutes or combustible gas content 〉=25%, and when the duration surpasses 5 minutes or aspiration pump breaks down, system alarm, and the startup shutdown programm, shutdown after the pressure chamber is cooled to-20 ℃.
Described control flow also comprises: when beginning to carry out the gasoline cyclic test, the locking of COMPUTER DETECTION monitoring unit control electronic lock needs the input password just can open electronic lock in the test; When reporting to the police, just can open electronic lock when needing to cool to-20 ℃ in chamber when breaking down in the process of the test.
All temps setting value in described oxygen content standard, combustible gas content standard, oxygen content and combustible gas content overproof duration and the test can manually be provided with and regulate.
Also be solidified with the control flow under the non-fuel feeding pattern in the programmable logic controller of described COMPUTER DETECTION monitoring unit: under non-fuel feeding pattern, directly to the chamber operation of starting shooting, relevant automobile test specimen is carried out constant temperature or thermocycling, in test, by the COMPUTER DETECTION monitoring unit temperature of test and the elevation rate of temperature are controlled and detected in real time.
The online gasoline cyclic test of high low temperature of the present invention system is owing to adopted good sealing and insulation design to chamber, and sealing and high insulating effect can be avoided the problem that the gasoline infiltration takes place and leak effectively.Because the oxygen content and the combustible gas content that have adopted the nitrogen unit can in time regulate in the control chamber are controlled in the safe range it.Owing to adopted the COMPUTER DETECTION monitoring unit, the temperature in the time of can be to test and the elevation rate of temperature carry out real-time detection and control; Can carry out continuous detection and control to oxygen content in the chamber and combustible gas content; And have fault alarm and shutdown function, an electronic lock encryption function.Can under the environment of safety, carry out by comprehensive warranty test.
Description of drawings
Fig. 1 is the basic composition synoptic diagram of the online gasoline cyclic test of the high low temperature of the present invention system;
Fig. 2 is the control flow chart under the fuel feeding pattern of being solidified in the programmable logic controller in the online gasoline cyclic test of the high low temperature of the present invention system;
Fig. 3 is the control flow chart under the non-fuel feeding pattern of being solidified in the programmable logic controller in the online gasoline cyclic test of the high low temperature of the present invention system.
Embodiment
Referring to Fig. 1, the online gasoline cyclic test of high low temperature of the present invention system, comprise chamber 1, heat supply unit (not shown) and refrigeration unit (not shown), specimen test unit 2, nitrogen supply (NS) unit 3, the unit 4 of bleeding, COMPUTER DETECTION monitoring unit 5, oxygen level sensor 6, combustible gas content level sensor 7 and temperature sensor 8.
Chamber 1 comprises chamber body, chamber door and electronic lock, chamber body and chamber door respectively comprise inwall, outer wall and middle heat-insulation layer, its inner-wall material is an import SUS304 corrosion resistant plate, outer wall materials is the Fine Steel Casting iron plate of handling through the surface electrostatic plastic-blasting, the insulation material of middle heat-insulation layer is in light weight, high-low temperature resistant and fire-retardant hard polyamine fat foamed plastic, adopt double-deck fluororubber sealing strip sealing between the chamber door of chamber and the doorframe, can prevent because sealing strip causes seal failure because of the oil erosion.At the doorframe place doorframe heater strip is installed, in case at low temperature condition lower door frame place condensation.Chamber door is provided with electronic lock, and this electronic lock is electrically connected with COMPUTER DETECTION monitoring unit 5.All syndeton places of chamber inner chamber have all adopted argon arc welding technique, and have carried out the leak test test, thereby guarantee that the petrol molecule in the chamber can not be penetrated in the heat-insulation layer.All passages that enter the chamber inner chamber are all through heat insulation bushing pipe turnover chamber, this heat insulation bushing pipe is made by macromolecular material cold-resistant, heat-resisting, the oil resistant erosion, junction in heat insulation bushing pipe and chamber seals with fluid sealant, is discharged into outside the case without tissue thereby stoped petrol molecule to be penetrated into interior the reaching of heat-insulation layer.Contactless labyrinth seal method has been adopted in sealing between motor shaft and the axle sleeve, can stop gas outside axle is discharged case.
The heat supply unit links to each other with chamber 1 and is used for providing the required heat energy that heats up to the chamber inner chamber, comprises a well heater, and this well heater is electrically connected with COMPUTER DETECTION monitoring unit 5, by 5 its work of control of COMPUTER DETECTION monitoring unit.
Refrigeration unit links to each other with chamber 1 and is used for providing cooling institute chilling requirement to the chamber inner chamber, comprises a refrigeration machine, and this refrigeration machine is electrically connected with COMPUTER DETECTION monitoring unit 5, by 5 its work of control of COMPUTER DETECTION monitoring unit.
Nitrogen supply (NS) unit 3 links to each other with chamber 1 and is used for providing nitrogen to the chamber inner chamber, comprise solenoid valve 31, source of the gas plate 32, air inlet ball valve 33, ball valve 34 and ball valve 35, solenoid valve 31 and ball valve 34 series connection, ball valve 35 is in parallel with this series pipe, one end of two parallel pipelines feeds chamber 1, and the other end connects source of the gas plate 32.Solenoid valve 31 is electrically connected with COMPUTER DETECTION monitoring unit 5, is used for providing nitrogen to chamber under the control of COMPUTER DETECTION monitoring unit 5.
The unit 4 of bleeding links to each other with chamber, and is electrically connected with COMPUTER DETECTION monitoring unit 5, is used under the control of COMPUTER DETECTION monitoring unit 5 gas of chamber inner chamber being extracted out.
COMPUTER DETECTION monitoring unit 5 comprises a programmable logic controller, and adopting the S7-200 of Siemens Programmable Logic Controller is the control module of main body, and it is the S7-226XM controller that the CPU element of this control module adopts model; It is the EM231 module that the platinum resistance load module adopts model, establishes the input of 2 tunnel platinum resistance; It is the EM231 module that the analog quantity load module adopts model, establishes the input of 4 tunnel analog quantitys; Man-machine interface TP170B color liquid crystal touch-screen.
I/O allocation table in the COMPUTER DETECTION monitoring unit and being defined as follows:
Input:
I0.0: overtemperature alarm;
The I0.1:R22 superpressure;
The I0.2:R13 superpressure;
The I0.3:R22 overload;
The I0.4:R13 overload;
I0.5: blower motor overload;
I1.5: the air pump fault, only when the online gasoline cyclic test of high low temperature, use;
Output:
Q0.0: be " 1 " during operation, be when stopping " 0 ";
Q0.1: fault alarm, when oxygen content 〉=4%, and the duration is during greater than 10 minutes, export 0.5 pulse per second (PPS), when combustible gas content 〉=25%, and the duration is during greater than 5 minutes, export 0.5 pulse per second (PPS), auxiliary reclay puts 1, and desired temperature changes to-25 degree by force, and forcing thermal output simultaneously is zero;
Q0.2: heated side PID control;
Q0.3: cold side PID control;
Q0.4: refrigeration control;
A. during constant temperature test: design temperature is lower than the X degree and is " 1 ";
During B. high low temperature sequence test: temperature descending section is output as " 1 ", the section that heats up, and setting value is " 1 " less than the Y degree;
During the cyclic test of C. high low temperature oil: temperature descending section is output as " 1 ", the section that heats up, and setting value is " 1 " less than the Y degree;
The arbitrary road of two tunnel oxygen contents 〉=4%, and duration during greater than 10 minutes are output as " 1 ", and combustible gas content 〉=25%, and duration during greater than 5 minutes are output as " 1 ";
Q0.5: during the cyclic test of high low temperature oil, be used as Control for Oxygen Content:
Oxygen content 〉=4% o'clock is output as " 1 ",
Oxygen content≤3% o'clock is output as " 0 ",
Combustible gas content 〉=25% o'clock is output as " 1 ",
Combustible gas content≤20% o'clock is output as " 0 ";
The Q0.6:PV absolute value is reported to the police;
Q0.7: picture operation button is pressed, be " 1 " that eject unlocking cipher input picture by " unlock button ", the input proper password can be unblanked, exceed standard when reporting to the police inflammable gas and oxygen content occurring, also need satisfy the temperature inside the box simultaneously and be reduced to-20 ℃ of conditions and can unblank;
Q1.0: combustible gas content 〉=25%, and duration during greater than 5 minutes are output as " 1 ";
Q1.1: oxygen content 〉=4%, and duration during greater than 10 minutes are output as " 1 ";
Q1.2: when the All Alerts content of equipment alarm occurring, be output as " 1 ";
Q1.3: fire protection warning.
Oxygen level sensor 6 is electrically connected the oxygen content that is used to detect in the chamber with COMPUTER DETECTION monitoring unit 5.
Combustible gas content level sensor 7 is electrically connected the combustible gas content that is used to detect in the chamber with COMPUTER DETECTION monitoring unit 5.
Also designed computing machine bitcom module in the programmable logic controller software of the present invention, can realize easily and the communication of host computer that the data that programmable logic controller is collected are sent on the host computer based on free interface communication.
The band lambda sensor gas transmitter that oxygen level sensor 6 selects for use German Dreager company to produce.Oxygen level sensor is sent to programmable logic controller with the oxygen content parameter that detects with the form of 4-20mA electric current.
The combustible gas gas transmitter that combustible gas content level sensor 7 selects for use German Dreager company to produce.The combustible gas content level sensor is sent to programmable logic controller with the combustible gas content parameter that detects with the form of 4-20mA electric current.
See also Fig. 2, the work control flow of the online gasoline cyclic test of high low temperature of the present invention system under the fuel feeding pattern is:
Before the chamber start, oxygen content and the combustible gas content in the check test case at first, when oxygen content≤3%, or combustible gas content≤20% o'clock, can be directly to the chamber operation of starting shooting; When oxygen content＞4%, or combustible gas content＞25% o'clock, programmable logic controller provides control signal and opens solenoid valve, feed nitrogen, oxygen content and combustible gas content in the chamber are reduced gradually, when reaching oxygen content≤3%, or combustible gas content≤20% o'clock, programmable logic controller provides control signal and cuts out solenoid valve, stop the nitrogen input, and provide control signal to the chamber operation of starting shooting, relevant automobile test specimen is carried out constant temperature or the online gasoline cyclic test of high low temperature, in test, the temperature of test and the elevation rate of temperature are detected in real time and control by the COMPUTER DETECTION monitoring unit, and oxygen content in the chamber and combustible gas content carried out continuous detection, take place as non-fault in the test, then test is performed until end, as breaking down in the process of the test, as oxygen content 〉=4%, and the duration was above 10 minutes; Or combustible gas content 〉=25%, and the duration was above 5 minutes; Or aspiration pump breaks down then system alarm, and startup shutdown programm, shutdown after the pressure chamber is cooled to-20 ℃.
When beginning to carry out the gasoline cyclic test, the locking of COMPUTER DETECTION monitoring unit control electronic lock needs the input password just can open electronic lock in the test; When reporting to the police, just can open electronic lock when needing to cool to-20 ℃ in chamber when breaking down in the process of the test.
All temps setting value among the present invention in set oxygen content standard, combustible gas content standard, oxygen content and combustible gas content overproof duration and the test can manually be provided with and regulate.
See also Fig. 3, the online gasoline cyclic test of high low temperature of the present invention system is under non-fuel feeding pattern, can be directly to the chamber operation of starting shooting, relevant automobile test specimen is carried out constant temperature or thermocycling, in test, by the COMPUTER DETECTION monitoring unit temperature of test and the elevation rate of temperature are detected in real time and control.
Claims (9)
1, the online gasoline cyclic test of a kind of high low temperature system, comprise chamber, heat supply unit and refrigeration unit, the heat supply unit links to each other with chamber and is used for providing the required heat energy that heats up to the chamber inner chamber, refrigeration unit links to each other with chamber and is used for providing cooling institute chilling requirement to the chamber inner chamber, it is characterized in that: also comprise specimen test unit, nitrogen supply (NS) unit, bleed unit and COMPUTER DETECTION monitoring unit, and be arranged on oxygen level sensor, combustible gas content level sensor and temperature sensor in the chamber; Described specimen test unit comprises specimen test frame, oil supply mechanism and fuel feeding cooling body, the specimen test frame is installed in and is used for fixing test specimen in the chamber, oil supply mechanism is formed the cyclic test oil circuit by fuel pump, operation valve, survey sensor and fuel pipe and test specimen, and the fuel feeding cooling body is arranged in this cyclic test oil circuit and is used to cool off fuel oil; Described nitrogen supply (NS) unit links to each other with chamber and is used for providing nitrogen to the chamber inner chamber, comprises the solenoid valve of a control nitrogen supply (NS); The described unit of bleeding links to each other with chamber and is used for the gas of chamber inner chamber is extracted out; Described COMPUTER DETECTION monitoring unit is electrically connected with the heat supply unit and is used to control it and provides heat to chamber, be electrically connected with refrigeration unit and be used to control it and provide cold to chamber, be electrically connected with the unit of bleeding and be used to control it gas in chamber is extracted out, be electrically connected with the specimen test unit and be used to control its operation, be electrically connected the oxygen content that is used to detect in the chamber with oxygen level sensor, be electrically connected the combustible gas content that is used to detect in the chamber with the combustible gas content level sensor, be electrically connected the temperature that is used to detect in the chamber with temperature sensor, be electrically connected with the solenoid valve of nitrogen supply (NS) unit and be used to control it and provide nitrogen to chamber.
2, the online gasoline cyclic test of high low temperature according to claim 1 system, it is characterized in that: described COMPUTER DETECTION monitoring unit comprises a programmable logic controller, and the control system of this controller is made up of S7-200 Programmable Logic Controller, CPU element, platinum resistance load module, analog quantity load module and man-machine interface touch-screen.
3, the online gasoline cyclic test of high low temperature according to claim 1 system, it is characterized in that: described chamber comprises casing, chamber door and electronic lock, adopt double-deck fluororubber sealing strip sealing between the chamber door of chamber and the doorframe, and the doorframe heater strip is installed; On casing, be provided with a plurality of heat insulation bushing pipes that run through casing, be used for various pipes, line passes casing and enters inner chamber, seal with fluid sealant in the junction of heat insulation bushing pipe and casing; Electronic lock is installed on the chamber door and with the COMPUTER DETECTION monitoring unit and is electrically connected.
4, the online gasoline cyclic test of high low temperature according to claim 2 system is characterized in that: it is the controller of S7-226XM that described CPU element adopts model; It is the EM231 module that described platinum resistance load module adopts model, establishes the input of 2 tunnel platinum resistance; It is the EM231 module that described analog quantity load module adopts model, establishes the input of 4 tunnel analog quantitys; Described man-machine interface touch-screen is a TP170B color liquid crystal touch-screen.
5, the online gasoline cyclic test of high low temperature according to claim 2 system, it is characterized in that: designed computing machine bitcom module in the described programmable logic controller, can realize communication easily with host computer based on free interface communication.
6, the online gasoline cyclic test of high low temperature according to claim 1 system is characterized in that: be solidified with following control flow in the programmable logic controller of described COMPUTER DETECTION monitoring unit:
Before A, the chamber start, oxygen content and the combustible gas content in the check test case at first, when oxygen content≤3%, or combustible gas content≤20% o'clock, can directly enter c program; When oxygen content＞4%, or combustible gas content＞25% o'clock, next program entered;
B, when oxygen content＞4%, or combustible gas content＞25% o'clock, programmable logic controller provides control signal and opens solenoid valve, feed nitrogen, oxygen content and combustible gas content in the chamber are reduced gradually, when reaching oxygen content≤3%, or combustible gas content≤20% o'clock, programmable logic controller provides control signal and cuts out solenoid valve, stops the nitrogen input, enters next program;
C, when oxygen content≤3%, or combustible gas content≤20% o'clock, programmable logic controller provides control signal to the chamber operation of starting shooting, relevant automobile test specimen is carried out constant temperature or the online gasoline cyclic test of high low temperature, in test, by the COMPUTER DETECTION monitoring unit temperature of test and the elevation rate of temperature are controlled and detected in real time, and oxygen content in the chamber and combustible gas content carried out continuous detection, take place as non-fault in the test, then test is performed until end, as breaking down in the process of the test, then enter next program;
D, oxygen content 〉=4% appears in process of the test, and the duration surpasses 10 minutes or combustible gas content 〉=25%, and when the duration surpasses 5 minutes or aspiration pump breaks down, system alarm, and the startup shutdown programm, shutdown after the pressure chamber is cooled to-20 ℃.
7, the online gasoline cyclic test of high low temperature according to claim 6 system, it is characterized in that: described control flow also comprises: when beginning to carry out the gasoline cyclic test, the locking of COMPUTER DETECTION monitoring unit control electronic lock needs the input password just can open electronic lock in the test; When reporting to the police, just can open electronic lock when needing to cool to-20 ℃ in chamber when breaking down in the process of the test.
8, the online gasoline cyclic test of high low temperature according to claim 6 system is characterized in that: all temps setting value in described oxygen content standard, combustible gas content standard, oxygen content and combustible gas content overproof duration and the test can manually be provided with and regulate.
9, the online gasoline cyclic test of high low temperature according to claim 1 system, it is characterized in that: also be solidified with the control flow under the non-fuel feeding pattern in the programmable logic controller of described COMPUTER DETECTION monitoring unit: under non-fuel feeding pattern, directly to the chamber operation of starting shooting, relevant automobile test specimen is carried out constant temperature or thermocycling, in test, by the COMPUTER DETECTION monitoring unit temperature of test and the elevation rate of temperature are controlled and detected in real time.
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|---|---|---|---|
| CN 03150657 CN1590971A (en) | 2003-08-29 | 2003-08-29 | High low temperature on line gasoline cireulation testing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03150657 CN1590971A (en) | 2003-08-29 | 2003-08-29 | High low temperature on line gasoline cireulation testing system |
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| CN1590971A true CN1590971A (en) | 2005-03-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165271A (en) * | 2014-08-04 | 2014-11-26 | 东北石油大学 | Buried oil-gas-water pipeline leakage diffusion experimental facility and working method thereof |
| CN107907341A (en) * | 2017-11-23 | 2018-04-13 | 博格华纳汽车零部件（江苏）有限公司 | Moveable turbocharger oil-servicing facilities and fuel supply method |
-
2003
- 2003-08-29 CN CN 03150657 patent/CN1590971A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165271A (en) * | 2014-08-04 | 2014-11-26 | 东北石油大学 | Buried oil-gas-water pipeline leakage diffusion experimental facility and working method thereof |
| CN104165271B (en) * | 2014-08-04 | 2017-09-12 | 东北石油大学 | Buried oil gas waterpipe Release and dispersion experimental provision and its method of work |
| CN107907341A (en) * | 2017-11-23 | 2018-04-13 | 博格华纳汽车零部件（江苏）有限公司 | Moveable turbocharger oil-servicing facilities and fuel supply method |
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