CN206845589U - Thermostatically controlled hydraulic hose pulse test bench - Google Patents
Thermostatically controlled hydraulic hose pulse test bench Download PDFInfo
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- CN206845589U CN206845589U CN201720312412.8U CN201720312412U CN206845589U CN 206845589 U CN206845589 U CN 206845589U CN 201720312412 U CN201720312412 U CN 201720312412U CN 206845589 U CN206845589 U CN 206845589U
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Abstract
It the utility model is related to hydraulic technique, more particularly to a kind of thermostatically controlled hydraulic hose pulse test bench, including electric-control system, pulse loading system, oil-supplementing system, subject hydraulic hose connection valve block.Subject hydraulic hose is connected by hydraulic control one-way valve with the high temperature fuel tank of oil-supplementing system, and hydraulic control one-way valve opens and closes according to the oil temperature in subject flexible pipe, and the B mouths of pulse loading system pressurized cylinder directly connect main fuel tank.Oil liquid temperature control uses the close-loop control mode of hydraulic control one-way valve combination temperature sensor, the stabilization of oil liquid temperature when ensure that pulse testing, and hydraulic control one-way valve is opened when only oil liquid temperature increases to over test requirements document after multiple pulses impact, keying frequency is reduced, improves its service life.This testing stand has the characteristics that simple in construction, energy consumption is low, dependable performance, service life are long.
Description
Technical field
The present invention relates to a kind of hydraulic hose testing stand, especially one kind can carry out temperature controlled energy-saving hydraulic flexible pipe
Pulse pressure testing table.
Background technology
Hydraulic hose is widely used in hydraulic system.During hydraulic work system, due to hydraulic impulse or heating
Etc. reason, often cause the destruction or failure of hydraulic hose.Therefore, hydraulic hose is tested, simulated in actual condition
Various hydraulic impulses and high temperataure phenomena, for ensure hydraulic system safe operation it is significant.
According to GB/T 7939-2008《Hydraulic hose assembly test method》In 5.6 section " durability（Pulse）Experiment " will
Ask, its pressure and experiment oil temperature need to meet when hose assembly carries out pulse testing：1）Pressures cycle should be in shade as shown in Figure 1
In region, and it is allowed to as close possible to diagramatic curve.Pressure rise actual speed rate should 100MPa/s ~ 350MPa/s it
Between.2）Pressure is 100%, 125%, the 133% of hose assembly maximum working pressure, and Fuel temperature is maintained at 100 DEG C ± 3 DEG C.
It can thus be concluded that to meet testing standard, hydraulic hose pulse testing must be accurately controlled to pulse and oil temperature.
To meet requirement of the testing standard to pulse and oil temperature, at present hydraulic hose pulse test bench generally use with
Lower two methods are realized.1）A kind of is that the hydraulic hose pulse test bench as described in patent publication No. CN101672747A uses
The method of environmental chamber combination stop valve.During pulse testing, subject hydraulic hose is placed in environmental chamber（Set in it
Having heaters）, stop valve closing（Play pressure maintaining effect）, by controlling the temperature of environmental chamber therefore desirable for ensureing soft to being tested
The temperature control requirement of pipe.It is disadvantageous in that, the method does not account for impact of the pulse testing incessantly to hydraulic oil
The rise of oil temperature in subject flexible pipe can be caused, so that testing standard can not be met.2）Another method such as patent publication No.
Hydraulic hose pulse test bench described in CN103016453B is by the way of throttle orifice combination radiator.Section is flowed through using fluid
Caused heat when flowing aperture（Converted by the pressure loss of energy impacted）To keep being tested the steady of flexible pipe inner fluid temperature
It is fixed.It is to be understood that experiment impact can all produce the substantial amounts of pressure loss of energy, actually energy-saving effect not every time under the method
It is good.Therefore, the hydraulic hose pulse that a kind of energy-saving effect is good, reliability is high, can accurately be controlled pressure and temperature is developed
Testing stand has important theory and practice meaning.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of hydraulic hose arteries and veins simple in construction, energy consumption is low, reliability is high
Rush testing stand.
In order to solve the above technical problems, the present invention provides a kind of thermostatically controlled hydraulic hose pulse test bench, including electricity
Control system, pulse loading system, oil-supplementing system, subject hydraulic hose connection valve block I, subject hydraulic hose connection valve block II.Its
It is characterised by：Subject hydraulic hose connection valve block II is connected by hydraulic control one-way valve with the high temperature fuel tank of oil-supplementing system, hydraulic pressure list
It is connected to the control mouth of valve by two-position two-way solenoid valve with the main pump of pulse loading system, subject hydraulic hose connection valve block II
The interior temperature sensor for being provided with test oil temperature, temperature sensor electrically connect with the input of electric-control system, electric-control system output end
Electrically connected with the control terminal of two-position two-way solenoid valve and the three position four-way electromagnetic valve of pulse loading system；Pulse loading system increases
The B mouths of cylinder pressure directly connect main fuel tank, and the B mouths of three position four-way electromagnetic valve block.
Improvement as the hydraulic hose pulse test bench to the present invention：The main fuel tank of the pulse loading system and repairing
The high temperature fuel tank of system independently separates.
Improvement as the hydraulic hose pulse test bench to the present invention：Be provided with described high temperature fuel tank electric heater and
Temperature sensor, temperature sensor electrically connect with the input of electric-control system, and the output end of electric heater and electric-control system is electrically connected
Connect.
Improvement as the hydraulic hose pulse test bench to the present invention：The hydraulic pump of described pulse loading system is by becoming
Frequency motor drives.
Compared with prior art, hydraulic hose pulse test bench of the invention has the advantages that：
1）Oil liquid temperature control ensure that pulse tries using the close-loop control mode of hydraulic control one-way valve combination temperature sensor
The stabilization of oil liquid temperature when testing, and hydraulic control one-way valve is only when oil liquid temperature increases to over test requirements document after multiple pulses are impacted
Open, reduce keying frequency, improve its service life.
2）The B mouths of three position four-way electromagnetic valve block, and the B mouths of pressurized cylinder directly connect main fuel tank, during pulse off-load, according to
Make pressurized cylinder fast retractile by the oil liquid pressure of oil-supplementing system hydraulic pump outlet, this structure both ensure that the quick of pulse
Off-load, ensure that accumulator will not drain the oil in off-load, reduce system energy consumption again.
3）The hydraulic pump of pulse loading system is driven by variable-frequency motor, by the rotating speed for changing variable-frequency motor, you can regulation
The flow of hydraulic pump outlet, it is convenient to control impulse waveform.
Brief description of the drawings
Fig. 1 is different discharge of main pump pulse waveforms as defined in hydraulic hose pulse testing standard
Fig. 2 is the system architecture connection diagram of hydraulic hose pulse test bench of the present invention.
Fig. 3 is electric-control system connection diagram of the present invention.
1-main fuel tank of description of symbols in figure；2-variable-frequency motor；3-hydraulic pump I；4-check valve I；5-overflow valve I；
6-pressure sensor I；7-pressure gauge I；8-accumulator；9-three position four-way electromagnetic valve；10-pressurized cylinder；11-bi-bit bi-pass
Magnetic valve；12-pressure sensor I；13-subject hydraulic hose connection valve block I；14-subject flexible pipe；15-temperature sensor
Ⅰ；16-subject hydraulic hose connection valve block II；17-pressure sensor III；18-pressure gauge II；19-hydraulic control one-way valve；
20-overflow valve II；21-check valve II；22-high temperature fuel tank；23-hydraulic pump II；24-temperature sensor II；25-electricity adds
Hot device.
Embodiment
One embodiment in the present invention is further described below in conjunction with the accompanying drawings：
As shown in drawings, hydraulic hose pulse test bench of the present invention includes electric-control system, pulse loading system, repairing system
System, subject hydraulic hose connection valve block I 13 and subject hydraulic hose connection valve block II 16.
Pulse loading system includes main fuel tank 1, hydraulic pump I 3, check valve I 4, overflow valve I 5, accumulator 8,3-position 4-way electricity
Magnet valve 9, pressurized cylinder 10；Main fuel tank 1 is connected with the oil inlet of hydraulic pump I 3 and the oil-out of overflow valve I 5 respectively；Hydraulic pump I 3
Driven by variable-frequency motor 2, the oil-out of hydraulic pump I 3 is connected with the oil inlet of check valve I 4；Set at the oil-out of check valve I 4
There are a pressure sensor I 6 and pressure gauge I 7, the oil-out of check valve I 4 oil inlet with overflow valve I 5,3-position 4-way electromagnetism respectively
The P mouths of valve 9 are connected with the hydraulic fluid port of accumulator 8；The T mouths of three position four-way electromagnetic valve 9 connect with main fuel tank 1,3-position 4-way electromagnetism
The A mouths of valve 9 are connected with the A mouths of pressurized cylinder 10, and the B mouths of three position four-way electromagnetic valve 9 block；The B mouths of pressurized cylinder 10 and main fuel tank 1
Connection, the C mouths of pressurized cylinder 10 are connected with the oil-out of check valve II 21, and the D mouths of pressurized cylinder 10 are connected with subject hydraulic hose
The hydraulic fluid port of valve block I 13 is connected, and pressure sensor 12 is provided between pressurized cylinder 10 and subject hydraulic hose connection valve block I 13.
Oil-supplementing system includes high temperature fuel tank 22, hydraulic pump II 23, overflow valve II 20, check valve II 21, hydraulic control one-way valve 19
With two-position two-way solenoid valve 11；Temperature sensor II 24 and electric heater 25, temperature sensor II 24 are provided with high temperature fuel tank 22
Electrically connected with the input of electric-control system, electric heater electrically connects with the output end of electric-control system；High temperature fuel tank 22 respectively with liquid
The oil inlet of press pump II 23 is connected with the oil-out of overflow valve II 20；The oil-feed of the oil-out check valve II 21 of hydraulic pump II 23
Mouth is connected；The oil inlet with overflow valve II 20, the C mouths of pressurized cylinder 10 are connected the oil-out of check valve II 21 respectively, unidirectionally
Pressure sensor III 17 and pressure gauge 18 are provided with the oil-out of valve II 21；The oil inlet of hydraulic control one-way valve 19 and high temperature fuel tank 22
Connection, the control mouth of hydraulically-controlled one-way valve 19 is connected with the A mouths of two-position two-way solenoid valve 11, the oil-out of hydraulically-controlled one-way valve 19 and
The hydraulic fluid port of subject hydraulic hose connection valve block II 16 is connected；The P mouths of two-position two-way solenoid valve 11 and the oil-out of check valve I 4
It is connected；Subject hydraulic hose connection valve block II 16 is provided with temperature sensor I 15, temperature sensor I 15 and electric-control system
Input electrically connects, and the output end and the control terminal of two-position two-way solenoid valve 11 and three position four-way electromagnetic valve 9 of electric-control system are electrically connected
Connect.
The course of work：
Subject flexible pipe 14 is first connected to subject hydraulic hose connection valve block I and subject hydraulic hose connection valve block before experiment
Between II, according to hydraulic system is connected shown in accompanying drawing, two-position two-way solenoid valve 11 and three position four-way electromagnetic valve 9 power off, simultaneously
The set pressure of overflow valve I 5 and overflow valve II 20 is adjusted as needed.Heater 25 is set to work by electric-control system, high temperature
Oil liquid temperature rise in fuel tank 22, when temperature sensor II 24 detects that oil liquid temperature meets test requirements document, heater stops
Only work.The electric motor starting for making to be connected with hydraulic pump I 3 and hydraulic pump II 23 by electric-control system, drive hydraulic pump I 3 and hydraulic pressure
Pump II 23 works, and the hydraulic oil that hydraulic pump I 3 exports makes accumulator 8 be full of fluid, and the high-temperature oil liquid that hydraulic pump II 23 exports is full of
It is tested flexible pipe 14 and its right chamber of corresponding pipeline and pressurized cylinder 10.
When 9 left position of three position four-way electromagnetic valve obtains electric, the P mouths of three position four-way electromagnetic valve 9 are logical with A mouths two, hydraulic pump I 3 and store
Can the hydraulic oil that exports of device 8 quickly fill with the left chamber of pressurized cylinder 10, and then promote the piston of pressurized cylinder 10 to move right, now by
Fluid in examination hydraulic hose 14 is compressed, and pressure rise, pressure sensor 12 records the change procedure of pressure.Work as 3-position 4-way
9 right position of magnetic valve obtains electric, and the A mouths of three position four-way electromagnetic valve 9 connect with main fuel tank 1, the pressure oil that now hydraulic pump II 23 exports
Into the right chamber of pressurized cylinder 10, make the piston fast retractile of pressurized cylinder 10, pressure reduces, and pressure sensor 12 records the change of pressure
Change process.Thus, by electric-control system set frequency, make 3-position 4-way electromagnetism constantly electric and dead electricity, then can be tested
Flexible pipe 14 carries out pulse shock experiment.
The oil liquid temperature control of hydraulic hose pulse testing：
The oil liquid temperature control of high temperature fuel tank：When temperature sensor II 24 detects oil liquid temperature in high temperature fuel tank 22 not
When meeting test requirements document, heater 25 is set to work by electric-control system, oil liquid temperature rise, when temperature sensor II 24 detects
When oil liquid temperature meets test requirements document, then heater is stopped.
It is tested the control of hydraulic hose oil liquid temperature：When the temperature sensor being arranged on hydraulic hose connection valve block II 16
I 15 when detecting that oil liquid temperature meets test requirements document, and two-position two-way solenoid valve 11 is powered off, and hydraulic control one-way valve 19 is closed；Multiple arteries and veins
After hitting in a state of excitement, due to the continuous compression of fluid, the oil liquid temperature rise being tested in hydraulic hose, so that temperature sensor I 15 is examined
When measuring oil liquid temperature and being unsatisfactory for test requirements document, by electric-control system make two-position two-way solenoid valve 11 it is electric, then hydraulic pump I 3 is defeated
The hydraulic oil gone out opens hydraulic control one-way valve 19, and the fluid in high temperature fuel tank is added to subject flexible pipe by hydraulic pump II 23, quite
Fluid in high temperature fuel tank is being tested hydraulic hose internal circulation flow, it is met test requirements document.Thus, it is tested flexible pipe fluid
Temperature control uses the close-loop control mode of hydraulic control one-way valve combination temperature sensor, ensure that the stabilization of oil liquid temperature.
Finally, it is also necessary to it is noted that listed above is only a specific embodiment of the invention.Obviously, it is of the invention
Above example is not limited to, there can also be many deformations.One of ordinary skill in the art can be straight from present disclosure
Export or all deformations associated are connect, are considered as protection scope of the present invention.
Claims (4)
1. a kind of thermostatically controlled hydraulic hose pulse test bench, including electric-control system, pulse loading system, oil-supplementing system, quilt
Test solution pressure hose connection valve block I, subject hydraulic hose connection valve block II；It is characterized in that：It is tested hydraulic hose connection valve block II
Connected by hydraulic control one-way valve with the high temperature fuel tank of oil-supplementing system, the control mouth of hydraulically-controlled one-way valve by two-position two-way solenoid valve with
The hydraulic pump connection of pulse loading system, the II interior temperature sensor for being provided with test oil temperature of subject hydraulic hose connection valve block, temperature
Degree sensor electrically connects with the input of electric-control system, and electric-control system output end is with two-position two-way solenoid valve and pulse loading
The control terminal electrical connection of the three position four-way electromagnetic valve of system；The B mouths of pulse loading system pressurized cylinder directly connect main fuel tank, three four
The B mouths of three-way electromagnetic valve block.
2. thermostatically controlled hydraulic hose pulse test bench according to claim 1, it is characterised in that：The pulse loading
The high temperature fuel tank of the main fuel tank of system and oil-supplementing system independently separates.
3. thermostatically controlled hydraulic hose pulse test bench according to claim 2, it is characterised in that：Described high temperature oil
Electric heater and temperature sensor are provided with case, temperature sensor electrically connects with the input of electric-control system, electric heater and electricity
The output end electrical connection of control system.
4. thermostatically controlled hydraulic hose pulse test bench according to claim 1, it is characterised in that：Described pulse adds
The hydraulic pump of loading system is driven by variable-frequency motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720312412.8U CN206845589U (en) | 2017-03-28 | 2017-03-28 | Thermostatically controlled hydraulic hose pulse test bench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720312412.8U CN206845589U (en) | 2017-03-28 | 2017-03-28 | Thermostatically controlled hydraulic hose pulse test bench |
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| Publication Number | Publication Date |
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| CN206845589U true CN206845589U (en) | 2018-01-05 |
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| CN201720312412.8U Active CN206845589U (en) | 2017-03-28 | 2017-03-28 | Thermostatically controlled hydraulic hose pulse test bench |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509333A (en) * | 2021-12-29 | 2022-05-17 | 中国航空工业集团公司西安飞机设计研究所 | Hydraulic pulse test fixture for aviation rubber steel wire braided hose |
-
2017
- 2017-03-28 CN CN201720312412.8U patent/CN206845589U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509333A (en) * | 2021-12-29 | 2022-05-17 | 中国航空工业集团公司西安飞机设计研究所 | Hydraulic pulse test fixture for aviation rubber steel wire braided hose |
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