CN209911178U - Cooler for measuring particle deposition path - Google Patents
Cooler for measuring particle deposition path Download PDFInfo
- Publication number
- CN209911178U CN209911178U CN201920064397.9U CN201920064397U CN209911178U CN 209911178 U CN209911178 U CN 209911178U CN 201920064397 U CN201920064397 U CN 201920064397U CN 209911178 U CN209911178 U CN 209911178U
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- exchange tube
- cooler
- cooling water
- mounting seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000008021 deposition Effects 0.000 title claims description 41
- 239000002245 particle Substances 0.000 title claims description 24
- 239000000498 cooling water Substances 0.000 claims abstract description 36
- 239000013618 particulate matter Substances 0.000 claims abstract description 28
- 238000012360 testing method Methods 0.000 abstract description 33
- 239000007789 gas Substances 0.000 description 29
- 238000009434 installation Methods 0.000 description 8
- 238000005070 sampling Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Abstract
The utility model discloses a cooler for measuring particulate matter deposit route, the cooler includes inlet end mount pad and outlet end mount pad, a central rod is fixed between inlet end mount pad and the outlet end mount pad, and the heat exchange tube is overlapped outside the central rod, the heat exchange tube is connected through heat exchange tube section ring flange by a plurality of heat exchange tube sections; the cooling water jacket is sleeved outside the heat exchange tube, a cooling water inlet chuck is arranged on one side of the cooling water jacket, and a cooling water outlet chuck is arranged on the other side of the cooling water jacket. The utility model discloses can test particulate matter deposit route, and can measure along each position section sedimentary deposit structure of air current direction, weight and heat exchange tube heat exchange efficiency.
Description
Technical Field
The utility model relates to a research technical field of internal-combustion engine exhaust gas recirculation cooler specifically is a cooler for measuring particulate matter deposit route.
Background
Exhaust gas recirculation is one of the main measures to reduce the nitrogen oxides of diesel engines. The exhaust gas recirculation cooling technology can cool high-temperature exhaust gas, makes up the defects of the traditional exhaust gas recirculation technology, further improves the performance of an engine, and is popularized and used by automobile manufacturers. When harmful substances such as particulate matters and hydrocarbons in engine exhaust pass through the cooler, the harmful substances are deposited on the inner wall surface of the heat exchange tube of the cooler under the action of external force such as thermophoretic force and the like to form a porous deposition layer. The multi-empty deposition layer reduces the heat exchange efficiency of the cooler, reduces the maximum flow of gas passing through, and generates larger pressure loss. The main components of carbon deposits in the heat exchange tube of the cooler are soot, hydrocarbon and the like, so that it is necessary to research the deposition behavior of particulate matters in the heat exchange tube.
At present, a cooler specially used for testing a particle deposition path in the cooler does not exist, and a shell-and-tube cooler heat exchange tube for testing the particle deposition behavior in the cooler has a minimum length, so that the deposition structure and the heat exchange efficiency of particles in the heat exchange tube at each position section along the airflow direction cannot be tested.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a cooler for measuring particulate matter deposit route is provided, adopt this cooler, can test particulate matter deposit route, and can measure along each position section sedimentary deposit structure of air current direction, weight and heat exchange tube heat exchange efficiency.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a cooler for measuring a particle deposition path comprises an air inlet end mounting seat and an air outlet end mounting seat, wherein a central rod is fixed between the air inlet end mounting seat and the air outlet end mounting seat, a heat exchange tube is sleeved outside the central rod, and a plurality of heat exchange tube sections are connected through heat exchange tube section flange plates; the cooling water jacket is sleeved outside the heat exchange tube, a cooling water inlet chuck is arranged on one side of the cooling water jacket, and a cooling water outlet chuck is arranged on the other side of the cooling water jacket.
Further, a heat exchange pipe section mounting gasket is arranged between each section of the heat exchange pipe section.
Furthermore, one end of the central rod is arranged in a mounting hole in the center of the air outlet end mounting seat and is fixed through a first positioning pin; the other end of the center rod is arranged in a mounting hole in the center of the air inlet end mounting seat and is fixed through a second positioning pin.
Furthermore, the air inlet end mounting seat and the air outlet end mounting seat are both provided with cooling water jacket sealing rubber rings.
Furthermore, a flange sleeve is sleeved outside a flange of the heat exchange tube section.
Compared with the prior art, the beneficial effects of the utility model are that: because the utility model designs a sectional type cooler structure suitable for measuring the particulate matter deposition path of the exhaust gas recirculation cooler, each heat exchange pipe section in the structure is detachable, and the particulate matter deposition path of the heat exchange pipe section with shorter length along the air flow direction can be tested; the deposition quality and the heat exchange efficiency of each small section of the heat exchange pipe section along the airflow direction can be tested; the microstructure of particle deposits of different heat exchange tube sections along the airflow direction can be researched; the influence rule of the structure and the quality of the particle deposit at each position on the heat exchange efficiency of the heat exchange pipe section can be researched.
Drawings
FIG. 1 is a diagram of a cooler configuration for measuring a path of particulate matter deposition in accordance with the present invention;
FIG. 2 is a three-dimensional structure of a cooler for measuring a path of deposition of particulate matter according to the present invention;
fig. 3 is a particulate matter deposition path test system according to the present invention;
fig. 4 is a test data analysis diagram based on the test system of fig. 3.
In fig. 1: 101. the air outlet end seat is fixed with a screw; 102. a first positioning pin; 103. a cooling water jacket seals the rubber ring; 104. an air outlet end mounting base; 105. a cooling water jacket; 106. a heat exchange tube section; 107. a center pole; 108. a cooling water outlet chuck; 109. a cooling water inlet chuck; 110. a heat exchange pipe section mounting gasket; 111. a flange plate of the heat exchange tube section; 112. a flange sleeve; 113. a second positioning pin; 114. an air inlet end mounting base;
in fig. 3: 1. an exhaust manifold; 2. an exhaust gas recirculation valve; 3. a front end gas analyzer; 4. a front end gas analyzer sampling tube; 5. a front end particle analyzer sampling tube; 6. a front-end particle analyzer; 7. an intake air pressure sensor; 8. a cooler; 9. an outlet gas pressure sensor; 10. a back-end gas analyzer; 11. a back end gas analyzer sampling tube; 12. a rear-end particle analyzer sampling tube; 13. a back-end particle analyzer; 14. a gas flow meter; 15. an exhaust pipe; 16. a back pressure valve; 17. an exhaust gas outlet pipe; 18. an outlet air temperature sensor; 19. a cooling water outlet temperature sensor; 20. a cooling water outlet pipe; 21. a cooling water constant temperature system; 22. a water inlet pipe of a cooling water pump; 23. a water pump; 24. a cooling water inlet pipe; 25. a cooling water inlet temperature sensor; 26. an intake air temperature sensor; 27. an exhaust gas inlet pipe; 28. a redundant waste gas valve; 29. redundant exhaust pipes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a cooler suitable for measure particulate matter deposit route in exhaust gas recirculation cooler includes: the heat exchange tube comprises an air inlet end mounting seat 114, a first positioning pin 102, a plurality of flange sleeves 112, a central rod 107, a plurality of heat exchange tube segments 106, a heat exchange tube segment mounting gasket 110, a heat exchange tube segment flange 111, an air outlet end mounting seat 104, a second positioning pin 113, an air outlet end seat fixing screw 101, a cooling water jacket 105, a cooling water inlet chuck 109 and a cooling water outlet chuck 108.
A central rod 107 is fixed between the air inlet end mounting seat 114 and the air outlet end mounting seat 104, a heat exchange tube is sleeved outside the central rod 107, and the heat exchange tube is connected by a plurality of heat exchange tube sections 106 through heat exchange tube section flange plates 111; the heat exchange tube is externally sleeved with a cooling water jacket 105, one side of the cooling water jacket 105 is provided with a cooling water inlet chuck 109, and the other side of the cooling water jacket 105 is provided with a cooling water outlet chuck 108. The heat exchange tube section flange 111 is externally sleeved with a flange sleeve 112, and the flange sleeve 112 is used for fixing the heat exchange tube section flange 111 at the middle position where the two heat exchange tube sections 106 are connected, so that the heat exchange tube section flange 111 is prevented from shaking in the axial direction, and a contact surface restraining effect is achieved.
In order to achieve a good connection and sealing effect between the heat exchange tube segments 106, a heat exchange tube segment mounting gasket 110 may be disposed between each of the heat exchange tube segments 106. The center rod 107 can be installed in a simple manner, that is, one end of the center rod is placed in the installation hole in the center of the air outlet end installation seat 104 and fixed by the first positioning pin 102; the other end of the center rod 107 is disposed in a mounting hole at the center of the air inlet end mounting seat 114 and fixed by a second positioning pin 113.
And the air inlet end mounting seat 114 and the air outlet end mounting seat 104 are both provided with cooling water jacket sealing rubber rings 103, so that the sealing performance of the cooler is further improved.
With the cooler for measuring the exhaust gas recirculation cooler particle deposit path described above, the following measurements can be made: 1) the cooler is installed according to the test requirements, and the test system is installed; 2) operating a test system to introduce exhaust gas into the cooler; 3) collecting once every same time interval and marking and storing the particulate matter emission information measured by the front-end cooler particle analyzer and the rear-end particle analyzer; 4) the above steps are repeated with varying numbers of heat pipe sections 106 installed.
The amount and size distribution of particulate matter deposited throughout the cooler can be known by comparing the emissions differential of the front end particle analyzer and the back end particle analyzer for the same heat exchange tube section 106. By comparing the distribution of the number and size of the particulate matter deposited in the cooler for different numbers of heat exchange tube sections 106, a path for the deposition of particulate matter in the cooler can be obtained.
The utility model also provides a physical characteristic parameter measurement analysis method based on above-mentioned cooler heat exchange tube section, promptly: before the particulate matter deposition test is carried out, the exhaust gas recirculation heat exchange pipe sections 106 are respectively marked and weighed and recorded, the installation positions of the sections are determined according to the marks of the heat exchange pipe sections 106, the installation of the cooler is completed, and the installation of the test system is completed. The whole test system is operated to carry out a particle deposition test, after the particle deposition test is finished, the tested exhaust gas recirculation heat exchange tube sections 106 are sequentially detached, weighing and recording are respectively carried out, the weighing record and the position marks of the heat exchange tubes need to be in one-to-one correspondence, the weighing of each heat exchange tube section 106 needs to be repeated for many times, and the average value of the weighing results of the multiple times is taken as the weight of the heat exchange tube section. And recording the surface morphology and the microstructure of the deposit in each heat exchange tube section 106 after the particulate matter deposition test and the position marks thereof in a one-to-one correspondence manner.
The first section of the heat exchange tube of the egr cooler from the exhaust gas inlet end is designated as the first section, and then the second section, the third section … … the nth section, in that order in the direction of gas flow. Weight (m) of first stage heat exchange tube of EGR cooler after particulate deposition testRear 1) Subtracting the weight (m) of the first section of the heat exchange tube of the cooler before the particulate matter deposition testBeginning 1) The weight difference (delta m) before and after the test of the first section of the heat exchange tube can be obtained1) Weight (m) of the second stage heat exchange tube of the EGR cooler after particulate deposition testRear 2) Subtracting the weight (m) of the first section of the heat exchange tube of the cooler before the particulate matter deposition test2 beginning) The weight difference (delta m) before and after the second section of heat exchange tube test can be obtained2) … … weight (m) of nth section of heat exchange tube of EGR cooler tested by particulate matter depositionRear n) Subtracting the weight (m) of the nth section of the cooler heat exchange tube before the particulate matter deposition testN is a number of) The weight difference (delta m) before and after the test of the nth section of heat exchange tube can be obtainedn) The formula is as follows:
Δm1＝mrear 1-mBeginning 1
Δm2＝mRear 2-mBeginning 1
……
Δmn＝mRear n-mN is a number of
By comparing the change of the weight difference (delta m) of the heat exchange tube sections of the coolers along the exhaust gas flow direction, the change rule of the deposition mass of the particulate matters in the heat exchange tube sections of the coolers along the gas flow direction can be obtained. By comparing the surface morphology and the microstructure of the sediment in each cooler heat exchange pipe section along the airflow direction, the change rule of the surface morphology and the microstructure of the sediment in the cooler heat exchange pipe section along the airflow direction can be obtained.
The method for measuring the heat exchange efficiency of the heat exchange pipe section 106 comprises the following steps: and marking the heat exchange tube sections 106 before the particulate matter deposition test of the cooler, determining the installation positions of the heat exchange tube sections of the cooler according to the marks, completing the installation of the exhaust gas recirculation cooler and completing the installation of the whole test system. And operating the test system to perform a particulate matter deposition test, sequentially detaching the heat exchange tube sections 106 deposited with the particulate matters in sequence after the test is completed, and respectively performing heat exchange efficiency test on each heat exchange tube section 106. The heat exchange efficiency test results of the heat exchange tube sections 106 and the position marks of the heat exchange tube sections 106 need to be recorded in a one-to-one correspondence manner.
The first section of the heat exchange tube of the egr cooler from the exhaust gas inlet end is designated as the first section, and then the second section, the third section … … the nth section, in that order in the direction of gas flow. Recording the heat exchange efficiency obtained by testing the first section of heat exchange tube of the exhaust gas recirculation cooler after the particulate matter deposition test as eta1The heat exchange efficiency of the second section of heat exchange tube section is recorded as eta2… … the heat exchange efficiency of the nth section of heat exchange tube is recorded as etan。
By comparing and analyzing the change of the heat exchange efficiency of the particulate matter deposition path of the cooler and the heat exchange efficiency of the heat exchange pipe sections with different positions, the influence rule of the particulate matter deposition path on the heat exchange efficiency can be obtained. The influence rule of the deposition quality of the particulate matters of the heat exchange tube section on the heat exchange efficiency of the heat exchange tube can be known by comparing and analyzing the change of the weight difference (delta m) of each heat exchange tube section at different positions and the change of the heat exchange efficiency (eta). By comparing and analyzing the surface morphology of sediments in the heat exchange pipe section with different positions, the change of the microstructure and the change of the heat exchange efficiency of the heat exchange pipe section, the rule of the influence of the microstructure of the particles on the heat exchange efficiency of the heat exchange pipe section can be obtained.
Furthermore, the weight difference (delta m) of each cooler heat exchange tube segment, the surface morphology and microstructure of sediments in the tube segment and the heat exchange efficiency are comprehensively compared and analyzed, so that the deposition path of the particles in each segment of the heat exchange tube and the influence of the deposition path on the performance of each cooler heat exchange tube segment can be further researched.
Furthermore, the deposition path of the particulate matters in the whole cooler and the influence law of the deposition path on the heat exchange efficiency and other performances of the cooler can be researched by comparing the weight difference (delta m) of the heat exchange tube sections of the coolers along the airflow flowing direction, the surface morphology and the microstructure of the deposits in the tube sections and the heat exchange efficiency.
Claims (5)
1. A cooler for measuring a particle deposition path comprises an air inlet end mounting seat (114) and an air outlet end mounting seat (104), and is characterized in that a central rod (107) is fixed between the air inlet end mounting seat (114) and the air outlet end mounting seat (104), a heat exchange tube is sleeved outside the central rod (107), and a plurality of heat exchange tube sections (106) are connected through heat exchange tube section flange plates (111); the heat exchange tube is externally sleeved with a cooling water jacket (105), one side of the cooling water jacket (105) is provided with a cooling water inlet chuck (109), and the other side of the cooling water jacket is provided with a cooling water outlet chuck (108).
2. A cooler for measuring a particle deposition path as set forth in claim 1 wherein a heat exchange tube segment mounting gasket (110) is provided between each of said heat exchange tube segments (106).
3. The cooler for measuring the deposition path of particulate matter according to claim 1, wherein one end of the center rod (107) is disposed in a mounting hole at the center of the gas outlet end mounting seat (104) and fixed by a first positioning pin (102); the other end of the central rod (107) is arranged in a mounting hole in the center of the air inlet end mounting seat (114) and is fixed through a second positioning pin (113).
4. The cooler for measuring the deposition path of particulate matter according to claim 1, wherein the cooling water jacket seal rubber rings (103) are mounted on the inlet end mounting seat (114) and the outlet end mounting seat (104).
5. A cooler for measuring particle deposition paths as set forth in claim 1 wherein said heat exchange tube section flange (111) is jacketed by a flange sleeve (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920064397.9U CN209911178U (en) | 2019-01-15 | 2019-01-15 | Cooler for measuring particle deposition path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920064397.9U CN209911178U (en) | 2019-01-15 | 2019-01-15 | Cooler for measuring particle deposition path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209911178U true CN209911178U (en) | 2020-01-07 |
Family
ID=69029182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920064397.9U Expired - Fee Related CN209911178U (en) | 2019-01-15 | 2019-01-15 | Cooler for measuring particle deposition path |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209911178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682728A (en) * | 2019-01-15 | 2019-04-26 | 西华大学 | It is a kind of for measuring the cooler and its measurement method of particulate matter deposition path |
-
2019
- 2019-01-15 CN CN201920064397.9U patent/CN209911178U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682728A (en) * | 2019-01-15 | 2019-04-26 | 西华大学 | It is a kind of for measuring the cooler and its measurement method of particulate matter deposition path |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105910966B (en) | A kind of particulate matter deposition path experimental bench and experimental method | |
| CN102062705B (en) | Combined tail gas collection system for multi-cylinder engine and control method thereof | |
| CN110823585B (en) | Method for acquiring NOx emission factor in heavy vehicle tail gas based on OBD remote emission monitoring data | |
| WO2021073351A1 (en) | Quantitative evaluation method for pyrolysis activation energy of graded diesel engine particle | |
| CN106762061B (en) | Diagnostic device and method for simulating DPF failure | |
| CN112798288B (en) | Portable vehicle-mounted remote emission energy consumption measuring system and method for heavy-duty diesel vehicle | |
| WO2013173174A1 (en) | Egr with temperature controlled venturi flow meter | |
| CN209911178U (en) | Cooler for measuring particle deposition path | |
| CN104614186A (en) | Exhaust gas re-circulation inter-cooler heat exchange efficiency test bench and test method | |
| Merkisz et al. | The analysis of exhaust gas thermal energy recovery through a TEG generator in city traffic conditions reproduced on a dynamic engine test bed | |
| Abarham et al. | A visualization test setup for investigation of water-deposit interaction in a surrogate rectangular cooler exposed to diesel exhaust flow | |
| Cuevas et al. | Thermo-hydraulic characterization of an automotive intercooler for a low pressure EGR application | |
| CN206772656U (en) | A kind of coal steam-electric plant smoke sampling analysis system | |
| CN109682728B (en) | Cooler for measuring particle deposition path and measuring method thereof | |
| CN115014647A (en) | Corrugated pipe reliability verification test device | |
| CN110827444A (en) | Heavy vehicle emission factor obtaining method suitable for OBD remote emission monitoring data | |
| JP2008516141A (en) | Improved exhaust gas temperature estimation method and apparatus, and internal combustion engine equipped with exhaust gas temperature estimation apparatus | |
| CN109238930B (en) | Test system and test method for researching influence of gravity field on particle deposition | |
| Liebsch et al. | EGR cooler fouling reduction: a new method for assessment in early engine development phase | |
| CN205719873U (en) | A kind of particulate matter deposition path laboratory table | |
| CN112267998B (en) | Method for testing highest temperature in cylinder and nonuniformity of cylinders of multi-cylinder diesel engine | |
| CN105043780B (en) | A kind of discharged nitrous oxides measuring method of many booster diesel engines | |
| Bravo et al. | Characterization of EGR cooler response for a range of engine conditions | |
| CN206329372U (en) | A kind of diagnostic device of simulation DPF failures | |
| CN219956901U (en) | Engine bench test system based on gas mixing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |