CN202735083U - Test apparatus for reliability of nozzle of variable geometry turbocharger - Google Patents
Test apparatus for reliability of nozzle of variable geometry turbocharger Download PDFInfo
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- CN202735083U CN202735083U CN 201220429402 CN201220429402U CN202735083U CN 202735083 U CN202735083 U CN 202735083U CN 201220429402 CN201220429402 CN 201220429402 CN 201220429402 U CN201220429402 U CN 201220429402U CN 202735083 U CN202735083 U CN 202735083U
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- variable geometry
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Abstract
The utility model provides a test apparatus for reliability of a nozzle of a variable geometry turbocharger. The test apparatus comprises a stepping motor, a transmission mechanism, a program control furnace and a single-chip microcomputer. The program control furnace is used for providing a simulation environment. The single-chip microcomputer is used for controlling running states of the test apparatus, and adjusting and controlling the simulation environment of the apparatus and running states of a to-be-tested nozzle. The blade moving speed of the nozzle and the test time can be controlled through programming based on actual operating requirements of the nozzle, a test temperature can be controlled and adjusted through programming, environment air inside the experimental furnace can be replaced, actual operating conditions of the nozzle can be simulated to the maximum, and a reliability test for reliability of the nozzle is realized, thereby meeting technical requirements for production of high-performance and high-reliability nozzles, and laying a solid foundation for research and development of the nozzles that exhibit higher quality and better performance. Meanwhile, the test apparatus can be promoted and used for various variable geometry turbocharger experiment stands and experiment test devices with relevant purposes.
Description
Technical field
The utility model relates to a kind of test unit, relates in particular to a kind of variable geometry turbine supercharger nozzle ring reliability test.
Background technology
Turbocharging is one of most important technical measures of internal combustion engine reinforcement, energy-saving and environmental protection.Compare with the natural inflow internal combustion engine, adopt advanced variable geometry turbocharger, Variable Geometry Turbocharger, the variable nozzle ring turbosupercharger that is called for short VGT, especially its principal mode, Variable Nozzle Turbocharger, be called for short VNT, can further improve performance, can realize the target of energy-saving petrol engine 10%～20% and diesel engine 20%～40%, cooperate the other technologies means can reach the emission level of Europe IV, Europe V and Europe VI.Compare with electric vehicle engineering with hybrid power, the turbocharging technology cost advantage is obvious.Along with the enforcement of the above automobile emissions standards of state's IV, first generation conventional turbocharger, second generation bypass venting turbosupercharger will progressively withdraw from automobile market, and third generation variable nozzle ring turbocharger applications is with increasingly extensive.
Nozzle ring is the core component of variable nozzle ring turbosupercharger, and its thermodynamic property has material impact to variable nozzle ring turbocharger turbine level performance, and its reliability is determining the life-span of variable nozzle ring turbosupercharger basically.The working environment of nozzle ring is similar to the turbo blade of aero gas turbine engine, namely in high temperature, high pressure, high speed and have in certain corrosive combustion gas and work, but its working conditions change is frequent, working temperature is lower, maximum temperature is generally less than 1050 ℃ at present, and blade is around the turning axle rotary oscillation of oneself.The working environment that nozzle ring is abominable and higher manufacturing accuracy requirement have proposed very high requirement to its material quality, processing technology, test detection.The general high temperature static test method that adopts is carried out the nozzle ring Reliability Check at present, but the nozzle ring actual working state moves, the material internal stress is to bear external force all different under stationary state and the motion state, only satisfy hot conditions, the duty that can not reflect really nozzle ring reality, the accuracy of test and credible very poor can not provide experimental basis for new-product development.
In addition, the fail-test of vehicle turbocharger is generally carried out according to related standards on the Special test platform at present, also can be installed on the engine and carry out fail-test with engine.Owing to domesticly just begun to research and develop variable geometry turbocharger, lack relevant reliability test, had a strong impact on exploitation and the application of variable geometry turbocharger product.
The utility model content
The purpose of this utility model provides the employing high temperature static that exists in a kind of variable geometry turbine supercharger nozzle ring reliability test solution prior art and carries out the nozzle ring Reliability Check, but the nozzle ring actual working state moves, the material internal stress is to bear external force all different under stationary state and the motion state, only satisfy hot conditions, the duty that can not reflect really nozzle ring reality, the accuracy of test and credibility are very poor, and the problem of experimental basis can not be provided for new-product development.
Technical solution of the present utility model is:
A kind of variable geometry turbine supercharger nozzle ring reliability test comprises stepper motor, gear train, program control stove and single-chip microcomputer, and described single-chip microcomputer connects described stepper motor, and described stepper motor connects described gear train,
Stepper motor: as power source, provide power by driving gear train for the motion state in the real border of test simulation;
Gear train: by the anchor clamps that band is dynamically connected, make the test nozzle ring motion of anchor clamps clamping, the motion state in the real border of simulation is provided for test;
Program control stove: by regulating temperature, pressure, the gas composition in the program control stove, comprise injecting gas, flue dust or suspended particle, for test provides simulated environment;
Single-chip microcomputer: the running status of Control experiment device, and the motion state of the simulated environment of control set for adjusting and test nozzle ring.
Further improve and be: described gear train is eccentric wheel sliding block mechanism, described gear train comprises crank, connecting rod and slide block, described stepper motor connects an end of described connecting rod, and the other end of described connecting rod is connected with anchor clamps, and described anchor clamps are located in the described program control stove.
Further improve and be: described stepper motor connects described connecting rod by shaft coupling.
Further improve and be: described gear train is provided with speed pickup, power sensor and displacement transducer.
Further improve and be: be provided with temperature sensor and pressure transducer in the described program control stove.
Further improve and be: described speed pickup, power sensor, displacement transducer, temperature sensor are connected with pressure transducer and are connected described single-chip microcomputer.
Further improve and be: described program control stove is provided with intake interface and exhaust port, and described intake interface is provided with retaining valve, and described exhaust port is provided with surplus valve.
A kind of variable geometry turbine supercharger nozzle ring reliability test, can be according to turbine supercharger nozzle ring real work loading spectrum, it is velocity spectrum or technical requirement on design simulation nozzle ring actual working environment state, be under simulated automotive discharging high temperature, the high pressure gas environment, make jet blade do reciprocating rotary around its rotation center and swing.Thereby test and reflect more truly, accurately the reliability of nozzle ring quality and performance, for research and development and workmanship more reliably, new type nozzle ring that performance is more superior established solid foundation.
A kind of variable geometry turbine supercharger nozzle ring reliability test, use stepper motor as power source, with single-chip microcomputer as program carrier, speed and the time of the free control step motor movement of coding, transmit power and speed by eccentric wheel sliding block mechanism, use anchor clamps to fix nozzle ring to be measured, adopt program control stove as temperature regulating device, and bell and connecting rod are by locating all to be equipped with high-pressure seal ring, increase in addition retaining valve, the devices such as surplus valve, make it have reliable gas injection and exhaust port, and the connecting rod place at gear train, terminal, be turbine supercharger nozzle ring, strain force sensor has been installed, can be in the omnidistance concrete data that obtain in real time load and stroke of test.
Gear train of the present utility model is controlled by crank angle between two limit positions and coefficient of travel speed variation parameter value, there is not quickreturn characteristics, this has guaranteed the even variation of speed, Portable power saving when guaranteeing transmission, efficient is high, and the utility model has adopted less pressure angle and larger drive line angle, in order to reduce frictional resistance, it is material that Slipper of the present utility model adopts copper and aluminium, makes through polishing after the machine work, has therefore guaranteed less friction factor.Therefore, gear train of the present utility model has good transmission performance and higher transmission efficiency.
In test, through high temperature and the acting in conjunction of time, deformation can occur in each assembly of turbine supercharger nozzle ring, the tolerance clearance of inter-module also changes thereupon, so load and movement travel all can change in the process of the test, in order to detect in real time load and the concrete data of stroke, the utility model is in connecting rod place and the terminal of gear train, be turbine supercharger nozzle ring, strain force sensor has been installed, can be in the omnidistance concrete data that obtain in real time load and stroke of test.
The part of the utility model control temperature adopts program control stove, be used for the automatic control of test heat time heating time and temperature, time and temperature precise control, can overcome temperature overshot phenomenon in the mensuration, and O-ring seal and retaining valve add high pressure in the stove, guarantee that furnace gas pressure maximum can reach two standard atmospheric pressures, namely 2.02 * 10
Pa, inwall adopts fire proofing material, has high temperature resistant, withstand voltage and corrosion resistant advantage.The utility model is provided with and touches film face-plate keying input information and data, and is easy to operate, and reliability is high, is accurate desirable measurement and control instrument, and temperature control is accurate, and programming rate is fast, regularly convenient, simple to operate, can carry out sequencing control to parameters such as time and temperature.
The beneficial effects of the utility model are: the utility model variable geometry turbine supercharger nozzle ring reliability test, according to nozzle ring real work loading spectrum or technical requirement on design programming Control jet blade movement velocity and test period, control able to programme and adjusting test temperature, replaceable experimental furnace internal environment gas, can at utmost simulate the nozzle ring actual working state, realize the examination of nozzle ring fail-test, thereby satisfy high-performance, the manufacturing requirements of high reliability nozzle ring is the nozzle ring research and development, production provides produces and the quality assurance condition.A kind of variable geometry turbine supercharger nozzle ring reliability test of the utility model, can be applicable on the existing conventional turbocharger test-bed, reasonable in design, easy and simple to handle, stable, once but continuous and steady operation is thousands of hours, has ensured the reliability of actual production nozzle ring quality and performance, also is the more superior new type nozzle ring establish a firm foundation of research and development quality and performance.
Description of drawings
Fig. 1 is the structural representation of a kind of variable geometry turbine supercharger nozzle ring reliability test of the utility model;
Fig. 2 is the key diagram of the eccentric wheel sliding block mechanism of drive mechanism;
Wherein: 1-stepper motor, 2-single-chip microcomputer, 3-gear train, 4-speed pickup, the 5-connecting rod, 6-slide block, 7-power sensor, 8-displacement transducer, the 9-anchor clamps, 10-intake interface, 11-exhaust port, 12-temperature sensor, the 13-pressure transducer, the program control stove of 14-, 15-shaft coupling, the 16-frame, 30-crank, 31-revolute pair one, 32-revolute pair two, 33-revolute pair three, 34-moving sets.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, embodiment provides a kind of variable geometry turbine supercharger nozzle ring reliability test, comprise stepper motor 1, gear train 3, program control stove 14 and single-chip microcomputer 2, described single-chip microcomputer 2 connects described stepper motor 1, described stepper motor 1 connects described gear train 3, stepper motor 1 provides power by driving gear train 3 for the motion state in the real border of test simulation as power source; Gear train 3 makes the test nozzle ring motion of anchor clamps 9 clampings by the anchor clamps 9 that band is dynamically connected, and the motion state in the real border of simulation is provided for test; By regulating temperature, pressure, the gas composition in the program control stove 14, comprise injecting gas, flue dust or suspended particle, for test provides simulated environment; The running status of single-chip microcomputer 2 Control experiment devices, and the motion state of the simulated environment of control set for adjusting and test nozzle ring, described gear train 3 is eccentric wheel sliding block mechanism, described gear train 3 comprises crank 30, connecting rod 5 and slide block 6, described stepper motor 1 connects an end of described connecting rod 5, the other end of described connecting rod 5 is connected with anchor clamps 9, described anchor clamps 9 are located in the described program control stove 14, described stepper motor 1 connects described connecting rod 5 by shaft coupling 15, described gear train 3 is provided with speed pickup 4, power sensor 7 and displacement transducer 8, be provided with temperature sensor 12 and pressure transducer 13 in the described program control stove 14, described speed pickup 4, power sensor 7, displacement transducer 8, temperature sensor 12 is connected with pressure transducer and is all connected described single-chip microcomputer 2, described program control stove 14 is provided with intake interface 10 and exhaust port 11, described intake interface 10 is provided with retaining valve, and described exhaust port 11 is provided with surplus valve.
A kind of variable geometry turbine supercharger nozzle ring reliability test, can be according to turbine supercharger nozzle ring real work loading spectrum, it is velocity spectrum or technical requirement on design simulation nozzle ring actual working environment state, be under simulated automotive discharging high temperature, the high pressure gas environment, make jet blade do reciprocating rotary around its rotation center and swing.Thereby test and reflect more truly, accurately the reliability of nozzle ring quality and performance, for research and development and workmanship more reliably, new type nozzle ring that performance is more superior established solid foundation.
A kind of variable geometry turbine supercharger nozzle ring reliability test, use stepper motor 1 as power source, with the 89C51 single-chip microcomputer as program carrier, speed and the time of free control step motor 1 motion of coding, transmit power and speed by eccentric wheel sliding block mechanism, use anchor clamps 9 to fix nozzle ring to be measured, adopt program control stove 14 as temperature regulating device, and bell and connecting rod 5 are by locating all to be equipped with high-pressure seal ring, increase in addition retaining valve, the devices such as surplus valve, make it have reliable gas injection and exhaust port, and connecting rod 5 places at gear train 3, terminal, be turbine supercharger nozzle ring, strain force sensor has been installed, can be in the omnidistance concrete data that obtain in real time load and stroke of test.
Wherein, embodiment gear train 3 adopts eccentric wheel sliding block mechanisms, comprises crank 30, connecting rod 5, slide block 6 and frame 16, and eccentric wheel sliding block mechanism is developed by crank and rocker mechanism, has simple in structurely, and damping is little, the characteristics that operate steadily.The kinematic pair of eccentric wheel sliding block mechanism comprises revolute pair 1, revolute pair 2 32, revolute pair 3 33 and moving sets 34, and four kinematic pairs of embodiment are lower pair, and the below carries out analytical calculation to the eccentric wheel sliding block mechanism freedom:
Mechanism has the self-movement parameter of determining motion and is called mechanism freedom.Each free components of doing plane motion has 3 degree of freedom, if a plane mechanism is comprised of N member, it is frame that a member wherein must be arranged, then the movable part number is n=N-1, before component movement pair not, total 3n degree of freedom with just having introduced constraint after the kinematic pair connection, reduced degree of freedom.Movable part of every introducing, just increase by 3 degree of freedom, lower pair of every introducing just constraint is fallen 2 degree of freedom, higher pair of every introducing just constraint falls 1 degree of freedom, the degree of freedom that connects the plane mechanism form by planar kinematic pair by each member should equal that total number of degrees of freedom, of all movable parts deducts total constraint condition number that each included kinematic pair of this mechanism provides in the mechanism, if total P in the mechanism
Individual lower pair, P
Individual higher pair, then the computing formula of the degree of freedom F of plane mechanism is
F=3n-2?P
-P
Wherein, n is the movable part number, P
Be lower pair number, P
Be the higher pair number.
By following formula as can be known, the number of mechanism freedom depends on movable part number and kinematic pair type and number.Eccentric wheel sliding block mechanism comprises 3 movable parts and 4 lower pairs among the embodiment, and therefore, eccentric wheel sliding block mechanism freedom number is:
F=3n-2?P
-P
=3×3-2×4-0=1
Hence one can see that, in eccentric wheel sliding block mechanism as long as a given independent parameter θ, i.e. position, angle, in order to determine driving link, namely crank 30, relative position after, then the relative position of other movable parts is also namely determined in the mechanism.Therefore, work as driving link, namely crank 30, characteristics of motion when known, then the characteristics of motion of other movable parts is also determined thereupon.So this eccentric wheel sliding block mechanism has definite relative motion.
Therefore this eccentric wheel sliding block mechanism can not exist the dead-centre position because crank 30 is driving link, therefore stuck phenomenon can not occur in motion process.Because opening and closing of blade requires freedom smooth, it is streamlined that velocity variations is, therefore the gear train 3 of embodiment is controlled by crank angle between two limit positions and coefficient of travel speed variation parameter value, there is not quickreturn characteristics, this has guaranteed the even variation of speed, Portable power saving when guaranteeing transmission, efficient is high, embodiment has adopted less pressure angle and larger drive line angle, in order to reduce frictional resistance, it is material that the slide block 6 of embodiment adopts copper and aluminium, makes through polishing after the machine work, has therefore guaranteed less friction factor.Therefore, the gear train 3 of embodiment has good transmission performance and higher transmission efficiency.
In test, through high temperature and the acting in conjunction of time, deformation can occur in each assembly of turbine supercharger nozzle ring, the tolerance clearance of inter-module also changes thereupon, so load and movement travel all can change in the process of the test, in order to detect in real time load and the concrete data of stroke, embodiment is in connecting rod place and the terminal of gear train, be turbine supercharger nozzle ring, strain force sensor has been installed, can be in the omnidistance concrete data that obtain in real time load and stroke of test.
The part that embodiment controls temperature adopts program control stove 14, be used for the automatic control of test heat time heating time and temperature, time and temperature precise control, can overcome temperature overshot phenomenon in the mensuration, and O-ring seal and retaining valve add high pressure in the stove, guarantee that furnace gas pressure maximum can reach two standard atmospheric pressures, namely 2.02 * 10
Pa, inwall adopts fire proofing material, has high temperature resistant, withstand voltage and corrosion resistant advantage.
The beneficial effect of embodiment is: embodiment variable geometry turbine supercharger nozzle ring reliability test, it is low to have cost, precision is high, volume is little, control the advantages such as convenient, flexible, can be according to nozzle ring real work loading spectrum or technical requirement on design programming Control jet blade movement velocity and test period, control able to programme and adjusting test temperature, replaceable experimental furnace internal environment gas, can at utmost simulate the nozzle ring actual working state, realize the examination of nozzle ring fail-test, thereby satisfy high-performance, the manufacturing requirements of high reliability nozzle ring is the nozzle ring research and development, production provides produces and the quality assurance condition.A kind of variable geometry turbine supercharger nozzle ring reliability test of embodiment, reasonable in design, easy and simple to handle, stable, once but continuous and steady operation is thousands of hours, ensure the reliability of actual production nozzle ring quality and performance, also be the more superior new type nozzle ring establish a firm foundation of research and development quality and performance.
The utility model can be promoted the experiment test equipment for various variable geometry turbocharger Experimental Establishments and associated uses.The utility model is not limited to above-mentioned embodiment, in the ken that those of ordinary skills possess, can also make various variations under the prerequisite that does not break away from the utility model aim.
Claims (7)
1. variable geometry turbine supercharger nozzle ring reliability test, it is characterized in that, comprise stepper motor (1), gear train (3), program control stove (14) and single-chip microcomputer (2), described single-chip microcomputer (2) connects described stepper motor (1), described stepper motor (1) connects described gear train (3)
Stepper motor (1): as power source, provide power by driving gear train (3) for the motion state in the real border of test simulation;
Gear train (3): by the anchor clamps (9) that band is dynamically connected, make the test nozzle ring motion of anchor clamps (9) clamping, the motion state in the real border of simulation is provided for test;
Program control stove (14): by regulating temperature, pressure, the gas composition in the program control stove (14), comprise injecting gas, flue dust or suspended particle, for test provides simulated environment;
Single-chip microcomputer (2): the running status of Control experiment device, and the motion state of the simulated environment of control set for adjusting and test nozzle ring.
2. variable geometry turbine supercharger nozzle ring reliability test as claimed in claim 1, it is characterized in that, described gear train (3) is eccentric wheel sliding block mechanism, described gear train (3) comprises crank (30), connecting rod (5) and slide block (6), described stepper motor (1) connects an end of described connecting rod (5), the other end of described connecting rod (5) is connected with anchor clamps (9), and described anchor clamps (9) are located in the described program control stove (14).
3. variable geometry turbine supercharger nozzle ring reliability test as claimed in claim 2 is characterized in that, described stepper motor (1) connects described connecting rod (5) by shaft coupling (15).
4. variable geometry turbine supercharger nozzle ring reliability test as claimed in claim 1 is characterized in that, described gear train (3) is provided with speed pickup (4), power sensor (7) and displacement transducer (8).
5. variable geometry turbine supercharger nozzle ring reliability test as claimed in claim 4 is characterized in that, is provided with temperature sensor (12) and pressure transducer (13) in the described program control stove (14).
6. variable geometry turbine supercharger nozzle ring reliability test as claimed in claim 5, it is characterized in that described speed pickup (4), power sensor (7), displacement transducer (8), temperature sensor (12) are connected 13 with pressure transducer) all connect described single-chip microcomputer (2).
7. such as each described variable geometry turbine supercharger nozzle ring reliability test of claim 1-6, it is characterized in that, described program control stove (14) is provided with intake interface (10) and exhaust port (11), described intake interface (10) is provided with retaining valve, and described exhaust port (11) is provided with surplus valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429402 CN202735083U (en) | 2012-08-28 | 2012-08-28 | Test apparatus for reliability of nozzle of variable geometry turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429402 CN202735083U (en) | 2012-08-28 | 2012-08-28 | Test apparatus for reliability of nozzle of variable geometry turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202735083U true CN202735083U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220429402 Withdrawn - After Issue CN202735083U (en) | 2012-08-28 | 2012-08-28 | Test apparatus for reliability of nozzle of variable geometry turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202735083U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630339A (en) * | 2012-08-28 | 2014-03-12 | 常州诚欧动力科技有限公司 | Variable geometry turbocharger nozzle ring reliability test device and method |
-
2012
- 2012-08-28 CN CN 201220429402 patent/CN202735083U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630339A (en) * | 2012-08-28 | 2014-03-12 | 常州诚欧动力科技有限公司 | Variable geometry turbocharger nozzle ring reliability test device and method |
| CN103630339B (en) * | 2012-08-28 | 2016-03-16 | 深圳泰博晟精密机电有限公司 | Variable geometry turbine supercharger nozzle ring reliability test and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130213 Effective date of abandoning: 20160316 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |