CN106644547A - Pulse simulation device - Google Patents
Pulse simulation device Download PDFInfo
- Publication number
- CN106644547A CN106644547A CN201710001032.7A CN201710001032A CN106644547A CN 106644547 A CN106644547 A CN 106644547A CN 201710001032 A CN201710001032 A CN 201710001032A CN 106644547 A CN106644547 A CN 106644547A
- Authority
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- China
- Prior art keywords
- valve
- storage tank
- oil storage
- oil
- simulation device
- 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.)
- Granted
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 15
- 238000007710 freezing Methods 0.000 abstract 1
- 230000003584 silencer Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 4
- 230000007306 turnover Effects 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a testing device, especially a pulse simulation device. The device comprises a pressure regulating valve, a solenoid valve, an electronic-type pressure meter, a control system, an oil storage tank, quick connectors, an oscilloscope, and a pressure regulating apparatus. The pressure regulating valve is connected with the oil storage tank and the solenoid valve, and the solenoid valve is connected with the top of the oil storage tank through a pipe. The electronic-type pressure meter is installed between the oil storage tank and the solenoid valve through a t-branch pipe. The number of quick connectors is not less than four, and the quick connectors are connected with oil outlets below the oil storage tank. The oscilloscope is connected with the quick connectors through a pressure sensor, and the pressure regulating apparatus is connected with the quick connectors. The solenoid valve and the electronic-type pressure meter are respectively connected with the control system. The solenoid valve is provided with a solenoid valve unit, and the solenoid valve unit is provided with a silencer. The top of the oil storage tank is provided with an oil storage tank valve, and the interior of the oil storage tank is provided with anti-freezing oil. The device is simple and novel, simulates the pulse conditions of a heat exchanger in practical use, is accurate and reliable in test, and provides new heat exchange test equipment.
Description
Technical field
The present invention relates to a kind of test device, especially pulse simulation device.
Background technology
The discharge by reducing the temperature of waste gas at engine exhaust port to reduce nitrogen oxides main at present.Generally sending out
The air vent of motivation installs heat exchanger to reduce EGT.The waste gas discharged at engine exhaust port has certain pressure and temperature
Degree, therefore it is required that heat exchanger being capable of pressure, long service life.
The outward appearance and air-tightness of product, the service life of heat exchanger is generally checked not to examine after the completion of heat exchanger production
Survey, because without suitable testing equipment, it is impossible to the pulse of the tail gas of simulated automotive.
The content of the invention
To solve the above problems, the present invention provides a kind of pulse simulation device for being capable of simulated automotive tail gas pulse, specifically
Technical scheme is：
Pulse simulation device, including pressure regulator valve, electromagnetic valve, electronic pressure meter, control system, oil storage tank, snap joint, oscillography
Device and regulator；The pressure regulator valve is connected respectively with air accumulator and electromagnetic valve, and the electromagnetic valve is by pipeline and oil storage tank
Top connection, the electronic pressure meter is arranged between oil storage tank and electromagnetic valve by tee T, and the snap joint is many
In four, snap joint is connected by pipeline with the oil-out below oil storage tank, the oscillograph by pressure transducer with it is fast
Quick coupling connects, and the regulator is connected with snap joint；The electromagnetic valve and electronic pressure meter connect with control system
Connect；Electromagnetic valve valve is housed on the electromagnetic valve, acoustic filter is housed on electromagnetic valve valve；Oil tank is provided with the top of the oil storage tank
Valve, inside is equipped with noncongeable oil, and the snap joint is connected respectively with the water inlet and outlet of heat exchanger.
The regulator includes pressure regulating valve and relief tube, and the pressure regulating valve is connected with snap joint, the pressure release
Pipe is connected with pressure regulating valve, and the other end of relief tube is provided with pressure release tube valve.
Also include drain tap and exhaustor, one end of the drain tap is connected by pipeline with oil-out, the other end
It is connected with exhaustor, the drain tap and the equal right angle setting of exhaustor, the height of the exhaustor is not less than in oil storage tank to be prevented
The liquid level of frozen oil.
Also include liquid-leakage alarm, the liquid-leakage alarm includes two panels profile of tooth detection lug, and the profile of tooth detection lug is first-class
Spacing is provided with multiple teeth, and the tooth of two panels profile of tooth detection lug is staggered installation of, and does not contact with each other, the profile of tooth detection lug respectively with control
System connection processed.
The tank valve is ball valve, and the electromagnetic valve valve is gate valve.
The pressure regulating valve is gate valve.
The drain tap is ball valve.
The oil storage tank side is provided with regarding liquid pipe.
The pipeline is transparent PU pipes.
Pressure regulator valve is used to adjust the output pressure of air accumulator.
Electromagnetic valve is pressurizeed and blood pressure lowering according to the frequency error factor of setting to oil storage tank, realizes the simulation of pulse.Electromagnetic valve
For two-position three way magnetic valve, air inlet is connected with pressure regulator valve, and working hole is connected with oil storage tank, and air vent connects with electromagnetic valve valve
Connect, acoustic filter is housed on electromagnetic valve valve.When air inlet is connected with working hole, gases at high pressure are entered in oil storage tank and impact antifreeze
Oil, noncongeable oil impingement heat transfer device.After electromagnetism Vavle switching, working hole is connected with air vent, and the gases at high pressure in oil storage tank are from aerofluxuss
Mouth is discharged, and the pressure of oil storage tank returns to atmospheric pressure.Electromagnetic valve back and forth switches according to the frequency of setting, realizes the arteries and veins of setpoint frequency
Punching.
Electromagnetic valve valve is arranged on the air vent of electromagnetic valve, exhaust velocity is controlled, so as to control impulse waveform.Electromagnetic valve valve
Door adopts gate valve, and the size opened by rotating handles control gate valve, so as to control exhaust velocity, can be realized more accurately controlling
System.If using ball valve, control accuracy is poor.The waveform of observation oscilloscope during rotating handles, until the waveform for being shown as needing.
Air pressure in electronic pressure meter signal piping, when pressure is less than set point value, control system sends warning
And stop test, preventing pipeline from revealing causes test invalid.
Tank valve at the top of oil storage tank is used as pouring orifice, also can be used as air vent.Tank valve makes oil storage tank close
Envelope, can preserve pressure.Tank valve adopts ball valve, easy to use as long as fully opening by the handle of ball valve is rotated by 90 °.
The side of oil storage tank is provided with regarding liquid pipe, is used to observe the liquid level of oil storage tank inside noncongeable oil depending on liquid pipe.
Oil storage tank lower section is provided with oil-out, and oil-out is connected with transparent PU pipelines.Drain tap is vertical by tee T
Installed in pipeline top, the other end of drain tap is vertically equipped with transparent PU exhaustors, and the height of exhaustor is greater than oil storage
The liquid level of the noncongeable oil in bucket, when otherwise opening drain tap, the noncongeable oil in oil storage tank can overflow from exhaustor.Work as heat exchange
Air in device along pipeline flow-direction oil storage barrel when have to pass through tee T below drain tap, drain tap is opened, air
Drain tap is entered along tee T, exhaustor is entered back into, in being then discharged to air.In the convenient observation pipeline of transparent PU pipes
Various situations, including the situation of noncongeable oil and bubble.
Pipeline at oil-out adopts transparent PU pipelines, pipeline to be connected with 7 snap joints by tee T, and each two is fast
Quick coupling constitutes one group, and snap joint is connected respectively with the water inlet and outlet of heat exchanger, can simultaneously test three heat exchange
Device.A remaining snap joint is connected with pressure transducer, and pressure transducer is connected with oscillograph, oscilloscope display pulse mode
Intend the impulse waveform in device pipeline.
Pipeline is also associated with pressure regulating valve by tee T, and the other end of pressure regulating valve is connected with relief tube, relief tube
With diameter greater than pipe diameter, the end of relief tube is equipped with pressure release tube valve.Pressure regulator valve is used to adjust the amplitude of waveform.Pressure regulating valve
Using gate valve, gate valve control is accurate, can slowly rotating handles, the waveform of observation oscilloscope, until waveform reaches the width of needs
Degree.
During test, the heat exchanger for connecting is placed on the fixed mount in Turnover Box, Turnover Box is anti-when can prevent from revealing
Frozen oil stream is to other places.Heat exchanger lower section is placed with liquid-leakage alarm, and the profile of tooth detection lug of liquid-leakage alarm is staggeredly placed, and respectively
It is connected with control system, when leakage, when noncongeable oil is dripped on profile of tooth detection lug, two adjacent teeth is connected, control system
Send warning.
When using, first pressure regulator valve is adjusted according to test requirements document, then pulse is arranged in the controls according to test requirements document
Frequency.Heat exchanger is connected in snap joint, heat exchanger is put into into lower, be less than oil storage tank, the air in heat exchanger along
Pipeline flow-direction oil storage tank, opens drain tap, and air is discharged in air from exhaustor.It is slow to rotate heat exchanger, until heat exchanger
Middle bubble-free is out.Oscillograph is connected in pipeline by pressure transducer.Fixed mount heat exchanger being placed in Turnover Box
On, liquid-leakage alarm is placed into into heat exchanger lower section.Start control system, electromagnetic valve valve and pressure regulating valve are adjusted respectively, directly
To oscilloscope display to desired waveform and amplitude.
Compared with prior art the invention has the advantages that：
The pulse simulation device that the present invention is provided is simple, novel, simulates the actually used middle pulse situation of heat exchanger, and test is accurate
Really, it is reliable, there is provided the testing equipment of new heat exchanger.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Specific embodiment
In conjunction with the specific embodiment of the description of the drawings present invention.
As shown in figure 1, pulse simulation device, including pressure regulator valve 2, electromagnetic valve 3, electronic pressure meter 4, control system 51,
Oil storage tank 6, snap joint, oscillograph 52 and regulator；The pressure regulator valve 2 is connected respectively with air accumulator 1 and electromagnetic valve 3, institute
State electromagnetic valve 3 to be connected with the top of oil storage tank 6 by pipeline, the electronic pressure meter 4 is arranged on oil storage tank 6 by tee T
And electromagnetic valve 3 between, the snap joint is no less than four, and snap joint is connected by pipeline with the oil-out of the lower section of oil storage tank 6
Connect, the oscillograph 52 is connected by pressure transducer 53 with snap joint, and the regulator is connected with snap joint；It is described
Electromagnetic valve 3 and electronic pressure meter 4 are connected with control system；Electromagnetic valve valve 31, electromagnetic valve valve are housed on the electromagnetic valve 3
Acoustic filter 32 is housed on door 31；The top of the oil storage tank 6 is provided with tank valve 61, and inside is equipped with noncongeable oil, described quickly to connect
Head is connected respectively with the water inlet and outlet of heat exchanger.
The regulator includes pressure regulating valve 71 and relief tube 72, and the pressure regulating valve 71 is connected with snap joint, institute
State relief tube 72 to be connected with pressure regulating valve 71, the other end of relief tube 72 is provided with pressure release tube valve 73.
Also include drain tap 63 and exhaustor 64, one end of the drain tap 63 is connected by pipeline with oil-out,
The other end is connected with exhaustor 64, the drain tap 63 and the equal right angle setting of exhaustor 64, and the height of the exhaustor 64 is not
Less than the liquid level of noncongeable oil in oil storage tank 6.
Also include liquid-leakage alarm, the liquid-leakage alarm includes two panels profile of tooth detection lug 9, on the profile of tooth detection lug 9
Multiple teeth are equidistantly provided with, the tooth of two panels profile of tooth detection lug 9 is staggered installation of, and does not contact with each other, the profile of tooth detection lug 9 is distinguished
It is connected with control system.
The tank valve 61 is ball valve, and the electromagnetic valve valve 31 is gate valve.
The pressure regulating valve 71 is gate valve.
The drain tap 63 is ball valve.
The side of the oil storage tank 6 is provided with regarding liquid pipe 62.
The pipeline is transparent PU pipes.
When using, first pressure regulator valve 2 is adjusted according to test requirements document, then pulse is arranged in the controls according to test requirements document
Frequency.Heat exchanger is connected in snap joint, heat exchanger is put into into lower, be less than oil storage tank 6, the air in heat exchanger along
Pipeline flow-direction oil storage tank 6, opens drain tap 63, and air is discharged in air from exhaustor 64.It is slow to rotate heat exchanger, Zhi Daohuan
Bubble-free is out in hot device.Oscillograph is connected in pipeline by pressure transducer 53.Heat exchanger is placed in Turnover Box
On fixed mount, liquid-leakage alarm is placed into into heat exchanger lower section.Start control system, electromagnetic valve valve 31 and pressure regulation are adjusted respectively
Valve 71, until oscillograph 52 is shown to the waveform and amplitude of requirement.
Claims (9)
1. pulse simulation device, it is characterised in that including pressure regulator valve（2）, electromagnetic valve（3）, electronic pressure meter（4）, control system
System（51）, oil storage tank（6）, snap joint, oscillograph（52）And regulator；The pressure regulator valve（2）Respectively with air accumulator（1）
And electromagnetic valve（3）Connection, the electromagnetic valve（3）By pipeline and oil storage tank（6）Top connection, the electronic pressure meter
（4）Oil storage tank is arranged on by tee T（6）And electromagnetic valve（3）Between, the snap joint is no less than four, and snap joint is led to
Piping and oil storage tank（6）The oil-out connection of lower section, the oscillograph（52）By pressure transducer（53）With snap joint
Connection, the regulator is connected with snap joint；The electromagnetic valve（3）And electronic pressure meter（4）Connect with control system
Connect；The electromagnetic valve（3）It is upper that electromagnetic valve valve is housed（31）, electromagnetic valve valve（31）It is upper that acoustic filter is housed（32）；The oil storage
Tank（6）Top be provided with tank valve（61）, inside is equipped with noncongeable oil, the snap joint respectively with the water inlet of heat exchanger and
Outlet connects.
2. pulse simulation device according to claim 1, it is characterised in that the regulator includes pressure regulating valve（71）
And relief tube（72）, the pressure regulating valve（71）It is connected with snap joint, the relief tube（72）With pressure regulating valve（71）Connection,
Relief tube（72）The other end be provided with pressure release tube valve（73）.
3. pulse simulation device according to claim 1, it is characterised in that also including drain tap（63）And exhaustor
（64）, the drain tap（63）One end be connected with oil-out by pipeline, the other end and exhaustor（64）Connection, the row
Air valve（63）And exhaustor（64）Equal right angle setting, the exhaustor（64）Height be not less than oil storage tank（6）Middle noncongeable oil
Liquid level.
4. pulse simulation device according to claim 1, it is characterised in that also including liquid-leakage alarm, the leakage report
Alert device includes two panels profile of tooth detection lug（9）, the profile of tooth detection lug（9）On be equidistantly provided with multiple teeth, two panels profile of tooth detection lug
（9）Tooth be staggered installation of, and do not contact with each other, the profile of tooth detection lug（9）It is connected with control system respectively.
5. pulse simulation device according to claim 1, it is characterised in that the tank valve（61）It is described for ball valve
Electromagnetic valve valve（31）For gate valve.
6. pulse simulation device according to claim 2, it is characterised in that the pressure regulating valve（71）For gate valve.
7. pulse simulation device according to claim 3, it is characterised in that the drain tap（63）For ball valve.
8. pulse simulation device according to claim 1, it is characterised in that the oil storage tank（6）Side is provided with regarding liquid pipe
（62）.
9. the pulse simulation device according to claim 1 to 8, it is characterised in that the pipeline is transparent PU pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001032.7A CN106644547B (en) | 2017-01-03 | 2017-01-03 | Pulse simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001032.7A CN106644547B (en) | 2017-01-03 | 2017-01-03 | Pulse simulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106644547A true CN106644547A (en) | 2017-05-10 |
| CN106644547B CN106644547B (en) | 2024-05-17 |
Family
ID=58838664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710001032.7A Active CN106644547B (en) | 2017-01-03 | 2017-01-03 | Pulse simulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106644547B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0631216A2 (en) * | 1993-05-18 | 1994-12-28 | IPT Institut für Prüftechnik Gerätebau GmbH & CO KG | Method and control circuit for regulating pressure by means of solenoid valves, e.g. for pressure testing of plastic tubes |
| JP2005241089A (en) * | 2004-02-25 | 2005-09-08 | Mitsubishi Electric Corp | Apparatus diagnosing device, refrigeration cycle device, apparatus diagnosing method, apparatus monitoring system and refrigeration cycle monitoring system |
| CN1995951A (en) * | 2006-12-12 | 2007-07-11 | 天津市天一科技有限公司 | Gasoline filter impulse test device |
| CN201344883Y (en) * | 2009-01-11 | 2009-11-11 | 江苏常牵庞巴迪牵引系统有限公司 | Hydraulic pulse fatigue device in pipe |
| CN101793652A (en) * | 2010-02-10 | 2010-08-04 | 中国北方车辆研究所 | Heat exchanger performance experiment device |
| CN202433269U (en) * | 2011-12-27 | 2012-09-12 | 广东出入境检验检疫局检验检疫技术中心 | Pulse pressure tester |
| CN202793950U (en) * | 2012-04-13 | 2013-03-13 | 深圳市亿威仕流体控制有限公司 | Air-conditioning compressor shell service life test bed device |
| CN103792105A (en) * | 2014-02-21 | 2014-05-14 | 中国石油大学(北京) | Experimental device for simulating hydraulic pulses in pipe cleaning process |
| US20150059327A1 (en) * | 2013-04-17 | 2015-03-05 | Arthur M. Rabert | Dual channel pulsed variable pressure hydraulic test apparatus |
| CN104422617A (en) * | 2013-09-03 | 2015-03-18 | 银庆宇 | Method and device for generating liquid pressure by adopting alternating current servo system |
| CN204550036U (en) * | 2015-04-08 | 2015-08-12 | 山东昊福药业集团制药有限公司 | Pharmacy fluid reservoir pressure device |
| CN104990816A (en) * | 2015-07-14 | 2015-10-21 | 珠海格力电器股份有限公司 | Pulse testing device |
| CN204740509U (en) * | 2015-07-06 | 2015-11-04 | 格力电器（芜湖）有限公司 | Hydraulic pulse test bed |
| CN105277321A (en) * | 2014-07-12 | 2016-01-27 | 盐城市锦东液压机械有限公司 | Comprehensive testboard for hydraulic quick joint |
| CN106153315A (en) * | 2016-06-21 | 2016-11-23 | 长春鑫利密封制品有限公司 | A kind of engine gasket pulse test bench |
| CN206330770U (en) * | 2017-01-03 | 2017-07-14 | 无锡塔尔基热交换器科技有限公司 | Pulse simulation device |
-
2017
- 2017-01-03 CN CN201710001032.7A patent/CN106644547B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0631216A2 (en) * | 1993-05-18 | 1994-12-28 | IPT Institut für Prüftechnik Gerätebau GmbH & CO KG | Method and control circuit for regulating pressure by means of solenoid valves, e.g. for pressure testing of plastic tubes |
| JP2005241089A (en) * | 2004-02-25 | 2005-09-08 | Mitsubishi Electric Corp | Apparatus diagnosing device, refrigeration cycle device, apparatus diagnosing method, apparatus monitoring system and refrigeration cycle monitoring system |
| CN1995951A (en) * | 2006-12-12 | 2007-07-11 | 天津市天一科技有限公司 | Gasoline filter impulse test device |
| CN201344883Y (en) * | 2009-01-11 | 2009-11-11 | 江苏常牵庞巴迪牵引系统有限公司 | Hydraulic pulse fatigue device in pipe |
| CN101793652A (en) * | 2010-02-10 | 2010-08-04 | 中国北方车辆研究所 | Heat exchanger performance experiment device |
| CN202433269U (en) * | 2011-12-27 | 2012-09-12 | 广东出入境检验检疫局检验检疫技术中心 | Pulse pressure tester |
| CN202793950U (en) * | 2012-04-13 | 2013-03-13 | 深圳市亿威仕流体控制有限公司 | Air-conditioning compressor shell service life test bed device |
| US20150059327A1 (en) * | 2013-04-17 | 2015-03-05 | Arthur M. Rabert | Dual channel pulsed variable pressure hydraulic test apparatus |
| CN104422617A (en) * | 2013-09-03 | 2015-03-18 | 银庆宇 | Method and device for generating liquid pressure by adopting alternating current servo system |
| CN103792105A (en) * | 2014-02-21 | 2014-05-14 | 中国石油大学(北京) | Experimental device for simulating hydraulic pulses in pipe cleaning process |
| CN105277321A (en) * | 2014-07-12 | 2016-01-27 | 盐城市锦东液压机械有限公司 | Comprehensive testboard for hydraulic quick joint |
| CN204550036U (en) * | 2015-04-08 | 2015-08-12 | 山东昊福药业集团制药有限公司 | Pharmacy fluid reservoir pressure device |
| CN204740509U (en) * | 2015-07-06 | 2015-11-04 | 格力电器（芜湖）有限公司 | Hydraulic pulse test bed |
| CN104990816A (en) * | 2015-07-14 | 2015-10-21 | 珠海格力电器股份有限公司 | Pulse testing device |
| CN106153315A (en) * | 2016-06-21 | 2016-11-23 | 长春鑫利密封制品有限公司 | A kind of engine gasket pulse test bench |
| CN206330770U (en) * | 2017-01-03 | 2017-07-14 | 无锡塔尔基热交换器科技有限公司 | Pulse simulation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106644547B (en) | 2024-05-17 |
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