CN104990816B - Pulse testing device - Google Patents
Pulse testing device Download PDFInfo
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- CN104990816B CN104990816B CN201510412682.1A CN201510412682A CN104990816B CN 104990816 B CN104990816 B CN 104990816B CN 201510412682 A CN201510412682 A CN 201510412682A CN 104990816 B CN104990816 B CN 104990816B
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- pressure medium
- pulse
- test device
- supply
- pressure
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- 238000012360 testing method Methods 0.000 title claims abstract description 72
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 239000010720 hydraulic oil Substances 0.000 claims description 26
- 230000008520 organization Effects 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 20
- 239000002828 fuel tank Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 239000003921 oil Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000012938 design process Methods 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000004378 air conditioning Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
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- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a pulse testing device, comprising: a pressure medium supply mechanism; the pulse generating mechanism is connected with the pressure medium supply mechanism and is used for generating pulses for the pressure medium; and the test connecting part is connected with the pulse generating mechanism and is used for mounting the component to be tested. The part to be tested is connected to the connecting part of the testing part, and under the action of the pulse generating mechanism, the pressure medium circularly impacts the part to be tested in a pulse mode, so that the impact force applied to the system part in the actual working process can be simulated, the problems of the key device in the structural design and production process can be found in advance, the quality of the system part can be well monitored, and the occurrence of after-sale faults can be effectively reduced; meanwhile, the pulse testing device can provide guidance for improvement of design and production process.
Description
Technical field
The present invention relates to air-conditioning production technical field, more particularly to one kind is entered in air-conditioning production process to various parts
The pulse test device of row performance rating.
Background technology
In order to ensure air-conditioning has reliable outgoing, need to survey various parts in air-conditioning production process
Examination, to avoid going wrong during follow-up use.
In various quality problems after sale feedback, the failure of system leak accounts for very big proportion, in order to which effective anti-locking system is let out
Leak, generally used in industry and static pressure test, typical test block bag are carried out to sorts of systems part (such as fluorine system system and water system)
Include air conditioner small copper product, four-way valve, cube valve etc..So-called static pressure test is exactly to apply specific pressure to tested part
Power, and after continuing for some time pressure, observes tested part and whether there is damage or whether there is leakage and occur.
But this kind of experimental method there is it is obvious the problem of, in fact, air-conditioning actually use during, all kinds of systems
What system part was born is not static pressure, and what is born in most cases is pulse, and pulse can be to sorts of systems part
The impact of circulation is caused, though the defects of slag inclusion, surface scratch, rosin joint and stress concentration in system part in static pressure test
It is not easy very much to be found, but under the circulation impact of actual pulse pressure, is but easy to produce leakage failure.
Therefore, how to simulate and actually use situation after sale, pulse testing is carried out to sorts of systems part, to send out in advance
The problem of existing such Primary Component is present, reduces the technology that failure is current those skilled in the art's urgent need to resolve and asks
Topic.
The content of the invention
It is an object of the invention to provide a kind of pulse test device, situation is actually used after sale that can simulate, to all kinds of
System part carries out pulse testing, so as to accomplish to find the problem of such Primary Component is present in advance, reduces the generation of failure.
In order to solve the above technical problems, pulse test device provided by the invention, including：
Pressure medium organization of supply；
It is connected with the pressure medium organization of supply, and for making pressure medium produce the pulse generating mechanism of pulse；
It is connected with the pulse generating mechanism, and for the test connecting portion for the parts to be tested installation.
Preferably, the pressure medium in the pulse test device is hydraulic oil, and the pressure organization of supply includes：
The pump housing being connected by pipeline with fuel tank；
It is connected with the pump housing, and for driving the motor of the pump housing rotation.
Preferably, the pressure medium in the pulse test device is gas, and the pressure organization of supply is high pressure gas
Source.
Preferably, the pulse generation device is magnetic valve, and the magnetic valve includes the first working position of cyclic switching
Put with the second operating position, wherein, at the first operating position, the pressure medium organization of supply with it is described test connecting portion connect
It is logical；At the second operating position, the pressure medium organization of supply disconnects with the test connecting portion.
Preferably, in addition to be arranged between the pressure medium organization of supply and the pulse generating mechanism first pressure
Force regulating valve.
Preferably, in addition to the connecting portion second pressure regulating valve communicated.
Preferably, the magnetic valve is controlled by PLC, and the magnetic valve is cut in the first operating position and the second operating position
The time interval changed is adjustable.
Preferably, in addition to it is arranged between the test connecting portion and the magnetic valve, and only allows the pressure to be situated between
Matter is flowed to the check valve of the test connecting portion by the magnetic valve.
Preferably, in addition to hydraulic oil cooling body, the hydraulic oil cooling body include：
The circulation pipe that both ends connect with the fuel tank respectively；
The circulating pump being serially connected on the circulation pipe；
The cooling device set is bonded with the circulation pipe.
Preferably, in addition to the temperature sensor that is arranged in the fuel tank, the temperature sensor, circulating pump and institute
State cooling device with PLC to be connected, when the oil temperature of the hydraulic oil is more than or equal to preset temperature, followed described in the PLC controls
Ring pump and the cooling device start；When the oil temperature of the hydraulic oil is less than the preset temperature, followed described in the PLC controls
Ring pump and the cooling device stop.
Preferably, in addition to warning device, and the liquid level sensor being arranged in the fuel tank, the liquid level sensor and
The warning device is connected with the PLC, and when the oil tank liquid level is less than safety levels, the PLC controls the report
Alarm device is alarmed.
It can be seen from above technical scheme in pulse test device disclosed in this invention, including pressure medium supplies
Mechanism is answered, is connected with pressure medium organization of supply, and for making pressure medium produce the pulse generating mechanism of pulse, with pulse
Generating mechanism is connected, and for the test connecting portion for the parts to be tested installation.
The parts to be tested will be connected test connecting portion, and in the presence of pulse generating mechanism, pressure medium will be with pulse
Form circulation impact is carried out to the parts to be tested, this can simulate system unit impact suffered in practical work process
Power, so as to accomplish to find Primary Component in advance in the presence of structure design and production process the problem of, to the matter of system unit
Amount plays preferable supervisory function bit, and then effectively reduces the generation of failure after sale；The pulse test device pair can also be set simultaneously
The improvement of meter and production technology provides guidance.
Brief description of the drawings
Fig. 1 is the schematic diagram of the pulse test device disclosed in the embodiment of the present invention；
The simplification structural representation for the pulse test device that Fig. 2 is provided by the embodiment of the present invention；
Fig. 3 is the structural representation of the pulse test device provided in the embodiment of the present invention.
Wherein, 1 is fuel tank, and 2 be motor, and 3 be the pump housing, and 4 be second pressure regulating valve, and 5 be check valve, and 6 be that pulse generates
Mechanism, 7 be first pressure regulating valve, and 8 be the parts to be tested, and 9 be circulation pipe, and 10 be cooling device, and 11 be circulating pump, and 12 be to be measured
Part holding chamber, 13 be control panel.
Embodiment
The core of the present invention is to provide a kind of pulse test device, situation is actually used after sale that can simulate, to all kinds of
System part carries out pulse testing, so as to accomplish to find the problem of such Primary Component is present in advance, reduces the generation of failure.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 1 and Fig. 2 are refer to, Fig. 1 is the schematic diagram of the pulse test device disclosed in the embodiment of the present invention, and Fig. 2 is
The simplification structural representation for the pulse test device that the embodiment of the present invention is provided.
Disclosed in this invention pulse test device be mainly made up of three parts, respectively pressure medium organization of supply,
Pulse generating mechanism 6 and test connecting portion, wherein pressure medium organization of supply are used to accord with to whole pulse test device provisioning
Desired high-pressure medium is closed, pulse generating mechanism 6 is used to high-pressure medium being changed into the medium flow field with pulse characteristic, so as to right
The parts to be tested 8 carries out pulse test, the simulation impact that system unit is born after sale during user's use, test connecting portion with
Pulse generating mechanism 6 is connected, and the medium flow field through extra pulse generating mechanism 6 will be directed into test connecting portion, test connecting portion
It is available for the parts to be tested 8 to install.
During actual test, the parts to be tested 8 will be installed in test connecting portion, in the effect of pulse generating mechanism
Under, pressure medium will carry out circulation impact to the parts to be tested 8 in the form of a pulse, and this can simulate system unit in actual work
Suffered impulsive force during work, so as to accomplish to find Primary Component in the presence of structure design and production process in advance
Problem, preferable supervisory function bit is played to the quality of system unit, and then effectively reduce the generation of failure after sale；The pulse simultaneously
Test device can also provide guidance to the improvement for designing and producing technique.
In embodiments of the present invention, the pressure medium in pulse test device can be hydraulic oil or gas, right first
It is specifically introduced using pulse test device of the hydraulic oil as pressure medium.
When using hydraulic oil as pressure medium, the pressure medium organization of supply in the present embodiment specifically includes the pump housing 3
With motor 2, its middle pump body 3 is connected by pipeline with fuel tank 1, and motor 2 drives the pump housing 3 to be rotated, and the pump housing 3 is driven in motor 2
During rotation, impeller runs at high speed (open before oil pump will just the pump housing full of oil) in the pump housing 3, and the liquid in the pump housing 3 is with leaf
Wheel is rotated together, and liquid is thrown away in exit by impeller under the influence of centrifugal force, and the liquid thrown away is fast in the diffuser casing of the pump housing 3
Degree is gradually slack-off, after liquid is thrown out of, forms vacuum low-pressure area at impeller central, and the liquid in fuel tank 1 is in the external world in air pressure
Under effect, flowed into through pipeline in the pump housing 3, the volume of the diffuser casing of the pump housing 3 is certain, with the liquid increase being thrown out of, pressure
Also gradually increase, is finally discharged from the outlet of the pump housing 3, and hydraulic oil continuously is sucked up to come so from fuel tank 1 like this
Continuously it is discharged afterwards from the outlet of the pump housing 3.
Pulse generation device 6 also has a variety of ways of realization certainly, and in the present embodiment, pulse generation device 6 uses electromagnetism
Valve, and the magnetic valve includes the first operating position and the second operating position of cyclic switching, at the first operating position, pressure
Medium organization of supply connects with test connecting portion, and now high-pressure medium can enter test connection by pulse generating mechanism 6
In portion, at the second operating position, pressure medium organization of supply disconnects with test connecting portion, i.e., high-pressure medium can not enter test
Connecting portion.When magnetic valve is in the first operating position and the second operating position cyclic switching, high-pressure medium forms stream of pulses.
As shown in Figures 1 and 2, in order to reduce cost, common three-position four-way valve is changed in the embodiment of the present invention
Make, referring to Fig. 1, the A mouths of three-position four-way valve are unimpeded, the closure of B holes, and three-position four-way valve is followed successively by the first working position from left to right
Put, the second operating position and off-position, wherein off-position do not connect electricity, just with the 3-position 4-way in the present embodiment
Two operating positions of valve, when in the first position, pressure medium organization of supply with test connecting portion connect, when in
During the second operating position, pressure medium organization of supply disconnects with test connecting portion, and hydraulic oil directly flows back to fuel tank.
The pump housing 3 being connected with motor 2 preferably uses plunger pump, in order to protect plunger pump not damaged by high-pressure medium, this
First pressure regulating valve 7 is also provided with embodiment between pressure medium organization of supply and pulse generating mechanism 6, in Fig. 1
It is shown.Further, the pressure in order to the high-pressure medium to impacting the parts to be tested 8 is adjusted, also settable and survey
Try the second pressure regulating valve 4 of connecting portion connection.
In addition, the way of realization of another pulse generating mechanism 6, this kind of pulse generation are additionally provided in the application
Mechanism 6 uses single-action hydraulic cylinder, and the piston of single-action hydraulic cylinder is as a valve body, in the presence of oil pressure, single-acting liquid
The piston closure pressure medium organization of supply of cylinder pressure and the pipeline tested between connecting portion；And in the presence of spring reset, it is single
The piston of action oil cylinder opens pressure medium organization of supply and the pipeline tested between connecting portion, so that high-pressure medium forms arteries and veins
The swash of wave.
Disclosed in this invention pulse test device also achieve automation, as shown in Figure 3, as pulse generate machine
The magnetic valve of structure 6 is by PLC (Programmable Logic Controller programmable logic controller (PLC)s), pulse test device
On be provided with control panel 13, can carry out magnetic valve by control panel 13 cuts in the first operating position and the second operating position
The time interval changed, i.e. pulse period are adjustable.It is understood that first pressure regulating valve 7 and second pressure regulating valve 4 also may be used
Controlled by PLC, the pressure of first pressure regulating valve 7 and second pressure regulating valve 4 can also be set on control panel 13
Fixed, the pulse test device is additionally provided with the parts to be tested holding chamber 12 in addition.
In order to prevent the backflow of hydraulic oil, between test connecting portion and magnetic valve, check valve 5 is additionally provided with, in Fig. 1
Shown, the check valve 5 only allows pressure medium to flow to test connecting portion by magnetic valve.
Understandable to be, due to being pressurized repeatedly during circulation, its temperature easily easily raises hydraulic oil, and warm
Not only density can change hydraulic oil after degree rise, but also can damage the sealing structures such as the sealing ring of pipeline, be this
Hydraulic oil cooling body is have also been devised in embodiment, the mechanism includes circulation pipe 9, the circulating pump being serially connected on circulation pipe 9
11 and be bonded with circulation pipe 9 set cooling device 10, as shown in Figure 2, the arrow in Fig. 2 represents the flow direction of hydraulic oil.
, can be cold to hydraulic oil progress as cooling device 10 using air-conditioner outdoor unit (condenser) because the temperature of hydraulic oil is higher
But.
In order to ensure the reliability of hydraulic oil cooling body work, also wrapped in the pulse test device in the present embodiment
The temperature sensor being arranged in fuel tank 1 is included, and temperature sensor, circulating pump 11 and cooling device 10 are connected with PLC,
When the temperature of hydraulic oil is more than or equal to preset temperature, PLC control circulating pumps 11 and cooling device 10 start, in the temperature of hydraulic oil
When degree is less than preset temperature, PLC control circulating pumps 11 and cooling device 10 stop.
Further, warning device is additionally provided with the present embodiment, and the liquid level sensor being arranged in fuel tank 1,
Liquid level sensor and warning device are connected with PLC, and when oil tank liquid level is less than safety levels, PLC control warning devices
Alarm, this can effectively improve the security of equipment work.
Pressure sensor can be set in test connecting portion during test, and by the parts to be tested 8 measured by pressure sensor
Pressure reservoir, PLC automatically generates pressure time history plot, can also pass through alarm when anomalous variation occurs for pressure
Device carries out automatic alarm.
In above example, pressure medium is described for the situation of hydraulic oil, hydraulic oil is used with pressure medium
Situation compare, when pressure medium is changed to gas, it is necessary to change part be only pressure medium organization of supply, in this implementation
In example, pressure medium organization of supply is specially high-pressure air source.
When pressure medium is gas, pulse generating mechanism and test connecting portion can with above-described embodiment share,
This is no longer repeated herein.
Pulse test device provided by the present invention is described in detail above.Specific case pair used herein
The principle and embodiment of the present invention is set forth, and the explanation of above example is only intended to help the method for understanding the present invention
And its core concept.It should be pointed out that for those skilled in the art, before the principle of the invention is not departed from
Put, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the guarantor of the claims in the present invention
In the range of shield.
Claims (7)
- A kind of 1. pulse test device, it is characterised in that including：Pressure medium organization of supply；It is connected with the pressure medium organization of supply, and for making pressure medium produce the pulse generating mechanism (6) of pulse；It is connected with the pulse generating mechanism (6), and for the test connecting portion for the parts to be tested installation；The pulse generating mechanism (6) is single-action hydraulic cylinder, and the piston of single-action hydraulic cylinder is as a valve body, in oil pressure Under effect, the piston closure pressure medium organization of supply of single-action hydraulic cylinder and the pipeline tested between connecting portion；And in spring In the presence of reset, the piston of one-way cylinder opens pressure medium organization of supply and the pipeline tested between connecting portion, so as to High-pressure medium is set to form stream of pulses.
- 2. pulse test device according to claim 1, it is characterised in that the pressure medium in the pulse test device For hydraulic oil, and the pressure medium organization of supply includes：The pump housing (3) being connected by pipeline with fuel tank (1)；It is connected with the pump housing (3), and the motor for driving the pump housing (3) to rotate.
- 3. pulse test device according to claim 1, it is characterised in that the pressure medium in the pulse test device For gas, and the pressure medium organization of supply is high-pressure air source.
- 4. pulse test device according to claim 1, it is characterised in that also include being arranged on the pressure medium supply First pressure regulating valve (7) between mechanism and the pulse generating mechanism (6).
- 5. pulse test device according to claim 4, it is characterised in that also include what is communicated with the test connecting portion Second pressure regulating valve (4).
- 6. pulse test device according to claim 2, it is characterised in that also including hydraulic oil cooling body, institute Stating hydraulic oil cooling body includes：The circulation pipe (9) that both ends connect with the fuel tank (1) respectively；The circulating pump (11) being serially connected on the circulation pipe (9)；The cooling device (10) set is bonded with the circulation pipe (9).
- 7. pulse test device according to claim 6, it is characterised in that also include being arranged in the fuel tank (1) Temperature sensor, the temperature sensor, circulating pump (11) and the cooling device (10) are connected with PLC, in the liquid When the oil temperature of force feed is more than or equal to preset temperature, the PLC controls the circulating pump (11) and the cooling device (10) to start； When the oil temperature of the hydraulic oil is less than the preset temperature, the PLC controls the circulating pump (11) and the cooling device (10) stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510412682.1A CN104990816B (en) | 2015-07-14 | 2015-07-14 | Pulse testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510412682.1A CN104990816B (en) | 2015-07-14 | 2015-07-14 | Pulse testing device |
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| Publication Number | Publication Date |
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| CN104990816A CN104990816A (en) | 2015-10-21 |
| CN104990816B true CN104990816B (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510412682.1A Expired - Fee Related CN104990816B (en) | 2015-07-14 | 2015-07-14 | Pulse testing device |
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| CN (1) | CN104990816B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716822B (en) * | 2016-01-28 | 2019-11-08 | 武汉信测标准技术服务有限公司 | Control method and device for automobile component action of low-voltage pulse endurance test |
| CN106644547B (en) * | 2017-01-03 | 2024-05-17 | 无锡塔尔基热交换器科技有限公司 | Pulse simulator |
| CN112595523A (en) * | 2020-11-23 | 2021-04-02 | 一汽解放汽车有限公司 | PVT test system |
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| CN1587972A (en) * | 2004-08-03 | 2005-03-02 | 大连理工大学 | Hydraulic fatigue test system for pressure container |
| CN201331469Y (en) * | 2008-12-31 | 2009-10-21 | 浙江大学 | High-pressure high-volume fatigue test system of pressure equipment |
| CN201876393U (en) * | 2010-12-07 | 2011-06-22 | 浙江大学 | Hydraulic fatigue test system for engine body |
| 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 |
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| JPS59187240A (en) * | 1984-03-14 | 1984-10-24 | Hitachi Ltd | Testing device for variable speed steering mechanism |
| CN2247807Y (en) * | 1995-09-14 | 1997-02-19 | 中华人民共和国湖北进出口商品检验局 | hydraulic pulsation pressure generator |
| CN201644123U (en) * | 2010-03-18 | 2010-11-24 | 常州市环境监测中心站 | Cooling water circulator for labs |
| CN102287421B (en) * | 2011-08-12 | 2014-11-19 | 三一重机有限公司 | Hydraulic oil tank testing system |
| CN202547952U (en) * | 2012-04-10 | 2012-11-21 | 浙江大学 | Automobile radiator pressure pulse test bed |
| CN203479480U (en) * | 2013-09-22 | 2014-03-12 | 珠海格力电器股份有限公司 | pipeline pressure testing system |
| CN204359492U (en) * | 2014-12-26 | 2015-05-27 | 长城汽车股份有限公司 | A kind of pressure pulse test equipment |
| CN204758415U (en) * | 2015-07-14 | 2015-11-11 | 珠海格力电器股份有限公司 | Pulse testing device |
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- 2015-07-14 CN CN201510412682.1A patent/CN104990816B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587972A (en) * | 2004-08-03 | 2005-03-02 | 大连理工大学 | Hydraulic fatigue test system for pressure container |
| CN201331469Y (en) * | 2008-12-31 | 2009-10-21 | 浙江大学 | High-pressure high-volume fatigue test system of pressure equipment |
| CN201876393U (en) * | 2010-12-07 | 2011-06-22 | 浙江大学 | Hydraulic fatigue test system for engine body |
| 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 |
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| CN104990816A (en) | 2015-10-21 |
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Granted publication date: 20180223 |