CN106644303A - Hydraulic damper sealing double-medium detection apparatus and detection method thereof - Google Patents
Hydraulic damper sealing double-medium detection apparatus and detection method thereof Download PDFInfo
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- CN106644303A CN106644303A CN201510724529.2A CN201510724529A CN106644303A CN 106644303 A CN106644303 A CN 106644303A CN 201510724529 A CN201510724529 A CN 201510724529A CN 106644303 A CN106644303 A CN 106644303A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Abstract
The invention discloses a hydraulic damper sealing double-medium detection apparatus and a detection method thereof. The hydraulic damper sealing double-medium detection apparatus comprises an apparatus main body and further comprises a work module arranged inside the apparatus main body, and the work module comprises a hydraulic detection unit, an air pressure detection unit, a vacuum-pumping unit and a reversing valve; and the top portion of the apparatus main body is also provided with a detection work platform, a hydraulic damper is fixedly placed on the detection work platform, the work module is connected with an inner cavity of the hydraulic damper through the reversing valve, and by use of motion of the reversing valve, the hydraulic detection unit, the vacuum-damping unit or the air pressure detection unit can be respectively controlled to act on the hydraulic damper so that sealing performance of the hydraulic damper can be detected through a liquid medium and a gas medium. According to the invention, the accuracy of a detection result is guaranteed, the detection steps are simple and convenient, the detection time is shortened, and the detection efficiency is improved.
Description
Technical field
The present invention relates to a kind of hydraulic buffer device for detecting sealability and its detection method, more particularly to a kind of double medium detection devices of hydraulic buffer sealing and its detection method.
Background technology
As the fast development of new energy field, wind power industry developing steps are accelerated, the power of the assembling unit is increasing, and to machine set system overall performance higher requirement is it is also proposed.To ensure the even running of wind power generating set transmission system, traditional gum shock absorber cannot meet the requirement of the big damping of low frequency, therefore develop hydraulic buffer.There is multilayer rubber elastic construction through the hydraulic buffer of particular design, the intensity of restraint forces not only can be ensured, moreover it is possible to be quiet and shock-free play damping effect.
Hydraulic buffer internal structure design is the topping up inner chamber of sealing, to meet rigidity and damping requirements of the generating set to hydraulic buffer, need the pouring liquid that elevated pressures are carried out to its inner chamber, perfusion at present is typically irrigated by the way of by liquid filling device, it is therefore desirable to carry out sealing propertytest to hydraulic buffer.But, existing sealing propertytest is during liquid filling device is irrigated to hydraulic buffer, subsidiary detection is carried out to sealing, if so detecting, the detection process time is long, workload is big, also perfusion is made to there is certain uncertainty, i.e., if the sealing of hydraulic buffer is unqualified, then the quality of whole hydraulic buffer also can be unqualified, cause filling process above just white useless, increased perfusion cost.In addition, in the prior art, sealing is detected just with a kind of liquid medium, so it cannot be guaranteed that the accuracy of testing result, is that the outgoing of follow-up hydraulic buffer brings hidden danger.
Application publication number is CN104632980A, Shen Qing Publication day is that the Chinese invention patent on May 20th, 2015 discloses a kind of full-automatic silicon oil damper silicone oil charging machine with sealing leak detection function, including the work top of oiling machine housing and oiling machine housing side；Fuel tank is provided with oiling machine housing, fuel tank is installed in support frame, petroleum pipeline is arranged at the bottom of fuel tank, petroleum pipeline is connected with oiling oil cylinder, oiling oil cylinder is connected by petroleum pipeline with shock absorber, bottom in oiling machine housing is additionally provided with vavuum pump and vacuum leak detection instrument for vacuumizing, and vavuum pump is vacuumized to shock absorber.
What the device in above-mentioned patent document was detected simply by a kind of liquid medium to the sealing of shock absorber, therefore, cannot guarantee that the accuracy of testing result.
To sum up, how a kind of hydraulic buffer device for detecting sealability and its detection method are designed, can be before hydraulic buffer be formally irrigated, the sealing of hydraulic buffer is detected by double media, ensure the accuracy of testing result, improve product quality reduces perfusion cost and makes its detecting step simple and convenient, shorten detection time, it is the technical problem for being badly in need of solving to improve detection efficiency.
The content of the invention
The technical problem to be solved is for defect present in prior art, a kind of double medium detection devices of hydraulic buffer sealing and its detection method are provided, it can be before hydraulic buffer be formally irrigated, the sealing of hydraulic buffer is detected by double media, the accuracy of testing result is ensure that, product quality is improve, perfusion cost is reduced and its detecting step is simple and convenient, detection time is shortened, detection efficiency is improve.
To solve above-mentioned technical problem, the technical solution used in the present invention is：A kind of double medium detection devices of hydraulic buffer sealing, including apparatus main body, the double medium detection devices of the hydraulic buffer sealing also include being arranged on the operational module inside apparatus main body, and the operational module includes signal detecting unit, air pressure detecting unit, vacuum unit and reversal valve；Detection operation platform is additionally provided with the top of described device main body, hydraulic buffer fixed placement is on detection operation platform, operational module is connected by reversal valve with the inner chamber of hydraulic buffer, can respectively control signal detecting unit, vacuum unit or air pressure detecting unit using commutation valve events and be operated hydraulic buffer to detect the sealing of hydraulic buffer so as to pass through the double medium of liquids and gases.
Preferably, the signal detecting unit includes liquid reserve tank and the hydraulic pump being connected with liquid reserve tank pipeline, and the hydraulic pump is connected by pipeline with reversal valve；Liquid-pressure pick-up is additionally provided with the pipeline of connection hydraulic pump and reversal valve.
Preferably, the air pressure detecting unit includes gas energy storage device and the pulsometer being connected with gas energy storage device pipeline, and the pulsometer is connected by pipeline with reversal valve；Baroceptor one is additionally provided with the pipeline of connection pulsometer and reversal valve.
Preferably, the detection operation platform is slidably connected on the top of apparatus main body, is additionally provided with safty shield on the centre position at the top of apparatus main body, detection operation platform can along apparatus main body top through safty shield, return and slide.
Preferably, the detection operation platform is provided with two, and it is respectively detection operation platform one and detection operation platform two, and two points of detection operation platform one and detection operation platform are two side positions positioned at safty shield；The reversal valve is using four position-5 way valves or 3 position-5 way valve, signal detecting unit, air pressure detecting unit and vacuum unit are connected respectively with three oil inlet and outlets in reversal valve, a commutation hydraulic fluid port in reversal valve is connected by connecting tube one with the inner chamber of the hydraulic buffer on detection operation platform one, and another the commutation hydraulic fluid port in reversal valve is connected by connecting tube two with the inner chamber of the hydraulic buffer on detection operation platform two；The valve one and valve two for controlling the opening and closing of connecting tube one and the opening and closing of connecting tube two is also respectively provided with the connecting tube one and connecting tube two.
Preferably, the double medium detection devices of the hydraulic buffer sealing also include control centre, and the control centre includes control panel, warning feedback device and PLC；The operational module, control panel and warning feedback device are connected with PLC electrical control.
Invention additionally discloses a kind of detection method of the double medium detection devices of basis hydraulic buffer sealing as above, the detection method is using reversal valve action control signal detecting unit and vacuum unit gas the sealing of hydraulic buffer to be detected by medium of liquid
Or the detection method is using reversal valve action control air pressure detecting unit the sealing of hydraulic buffer to be detected by medium of gas
Or the detection method is with liquid medium and using reversal valve action control air pressure detecting unit the sealing of hydraulic buffer to be detected in the form of gas combines as medium using reversal valve action control signal detecting unit and vacuum unit.
Preferably, the signal detecting unit includes liquid reserve tank and the hydraulic pump being connected with liquid reserve tank pipeline, and the hydraulic pump is connected by pipeline with reversal valve；Liquid-pressure pick-up is additionally provided with the pipeline of connection hydraulic pump and reversal valve；
The air pressure detecting unit includes gas energy storage device and the pulsometer being connected with gas energy storage device pipeline, and the pulsometer is connected by pipeline with reversal valve；Baroceptor one is additionally provided with the pipeline of connection pulsometer and reversal valve；
The vacuum unit includes vavuum pump, and the vavuum pump is connected by pipeline with reversal valve；Baroceptor two is additionally provided with the pipeline of connection reversal valve and vavuum pump；
It is medium to concretely comprising the following steps that the sealing of hydraulic buffer is detected that the utilization reversal valve controls signal detecting unit and vacuum unit gas with liquid：
1）, using between reversal valve action control vacuum unit and the inner chamber of hydraulic buffer be in connected state, be off between signal detecting unit and air pressure detecting unit and the inner chamber of hydraulic buffer；
2）, control vavuum pump open, the inner chamber of hydraulic buffer is vacuumized using vavuum pump, after the negative pressure that baroceptor two detects hydraulic buffer inner chamber reaches the negative pressure value of regulation, control vavuum pump close；
3）, using being off between reversal valve action control vacuum unit and air pressure detecting unit and the inner chamber of hydraulic buffer, connected state is between signal detecting unit and the inner chamber of hydraulic buffer；
4）, control hydraulic pump open, the liquid medium in liquid reserve tank is injected into the inner chamber of hydraulic buffer using hydraulic pump, after the pressure of hydraulic buffer inner chamber reaches the detection hydraulic pressure value of regulation, detect that can the pressure of hydraulic buffer inner chamber be maintained at the detection hydraulic pressure of regulation using liquid-pressure pick-up；If can keep, the sealing of hydraulic buffer is judged for qualified, otherwise be then unqualified；
It is medium to concretely comprising the following steps that the sealing of hydraulic buffer is detected to control air pressure detecting unit with gas using reversal valve：
A, using between reversal valve action control air pressure detecting unit and the inner chamber of hydraulic buffer be in connected state, be off between signal detecting unit and vacuum unit and the inner chamber of hydraulic buffer；
B, control pulsometer are opened, the gas medium in gas energy storage device is injected into the inner chamber of hydraulic buffer using pulsometer, after the pressure of hydraulic buffer inner chamber reaches the detection gas pressure value of regulation, detect that can the pressure of hydraulic buffer inner chamber be maintained at the detection gas pressure value of regulation using baroceptor one；If can keep, the sealing of hydraulic buffer is judged for qualified, otherwise be then unqualified；
The utilization reversal valve action control signal detecting unit and vacuum unit are with liquid medium and using reversal valve action control air pressure detecting unit when detecting to the sealing of hydraulic buffer in the form of gas combines as medium, be first with reversal valve action control signal detecting unit and vacuum unit the sealing of hydraulic buffer is detected with liquid medium after, recycle reversal valve action control air pressure detecting unit to be detected to the sealing of hydraulic buffer as medium with gas
Or after detecting to the sealing of hydraulic buffer as medium with gas first with reversal valve action control air pressure detecting unit, recycle what reversal valve action control signal detecting unit and vacuum unit were detected with liquid medium to the sealing of hydraulic buffer.
Preferably, the detection operation platform is slidably connected on the top of apparatus main body, is additionally provided with safty shield on the centre position at the top of apparatus main body, detection operation platform can along apparatus main body top through safty shield, return and slide；
It is that hydraulic buffer is fixed on detection operation platform when hydraulic buffer is detected, after promoting detection operation platform to drive hydraulic buffer together along apparatus main body top slide to safty shield, then detected.
Preferably, the detection operation platform is provided with two, and it is respectively detection operation platform one and detection operation platform two, and two points of detection operation platform one and detection operation platform are two side positions positioned at safty shield；The reversal valve is using four position-5 way valves or 3 position-5 way valve, signal detecting unit, air pressure detecting unit and vacuum unit are connected respectively with three oil inlet and outlets in reversal valve, a commutation hydraulic fluid port in reversal valve is connected by connecting tube one with the inner chamber of the hydraulic buffer on detection operation platform one, and another the commutation hydraulic fluid port in reversal valve is connected by connecting tube two with the inner chamber of the hydraulic buffer on detection operation platform two；The valve one and valve two for controlling the opening and closing of connecting tube one and the opening and closing of connecting tube two is also respectively provided with the connecting tube one and connecting tube two；
The utilization reversal valve control signal detecting unit and vacuum unit gas with liquid as medium the sealing of hydraulic buffer is detected when or using reversal valve control air pressure detecting unit with gas as medium the sealing of hydraulic buffer is detected when, it is that first a hydraulic buffer is fixed on detection operation platform one, a commutation hydraulic fluid port in reversal valve is coupled together with the inner chamber of one hydraulic buffer by connecting tube one, then detection operation platform one is promoted, it is set to drive on the centre position that the hydraulic buffer on detection operation platform one moves at the top of apparatus main body and in safty shield, open valve one again to control signal detecting unit and vacuum unit using reversal valve and detect the sealing of hydraulic buffer as medium with liquid or control air pressure detecting unit using reversal valve to detect the sealing of hydraulic buffer by medium of gas, valve two now is closed；While detection, another hydraulic buffer is fixed on detection operation platform two, is then coupled together another the commutation hydraulic fluid port in reversal valve with the inner chamber of another hydraulic buffer by connecting tube two, the state to be detected such as entrance；After the hydraulic buffer on detection operation platform one completes detection, close valve one, detection operation platform one is promoted along backtracking, detection operation platform two is promoted simultaneously, it is set to drive on the centre position that the hydraulic buffer on detection operation platform two moves at the top of apparatus main body and in safty shield, the opening recycling reversal valve of valve two controls signal detecting unit and vacuum unit gas is detected to the sealing of hydraulic buffer as medium with liquid or controls air pressure detecting unit using reversal valve the sealing of hydraulic buffer is detected by medium of gas；When hydraulic buffer on detection operation platform two is detected, next hydraulic buffer to be detected is dismantled and more finished changing to the hydraulic buffer on detection operation platform one completed to detection, the inner chamber of the hydraulic buffer to be detected with the next one of a commutation hydraulic fluid port in reversal valve is coupled together by connecting tube one, the state to be detected such as entrance；After the hydraulic buffer on detection operation platform two completes detection, close valve two and promote detection operation platform two along backtracking, detection operation platform one is promoted to slide into safty shield again simultaneously, open valve one and proceed detection, so detected using detection operation platform one and the alternate cycles of detection operation platform two, until completing the detection work of all hydraulic shock absorber.
The beneficial effects of the present invention is：The present invention can be detected by double media before hydraulic buffer is formally irrigated to the sealing of hydraulic buffer, it is ensured that the accuracy of testing result, improve product quality, reduce perfusion cost and its detecting step is simple and convenient, shorten detection time, improve detection efficiency.The present invention detects that convenient, efficiency high, stand-by period be short, double media can flexibly be selected according to actual conditions, make full use of the respective advantage of double media, when such as selecting gas medium to be detected, because hydraulic buffer inner chamber is gas, vacuum pumping need not be carried out, air pressure is directly discharged after the completion of detection, operating process is simple, and efficiency is higher；When selecting liquid medium to be detected, the liquid medium is consistent with the liquid that filling process is used, and with more the authenticity of detection, Detection results are more preferable.By setting up safty shield, it is to avoid the inner chamber of hydraulic buffer splits during detection, the detection medium inside inner chamber jumps out the accident damaged to testing staff to be occurred, and improves the security performance of the present invention.By arranging double so that the present invention is circulated detection using two stations, it can greatly improve the detection efficiency of hydraulic buffer, reduce and even eliminate the dress stand-by period, reduce the production cost of hydraulic buffer.
Description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1；
Fig. 2 is the left view structural representation of Fig. 1；
Fig. 3 is the structural representation of signal detecting unit in the embodiment of the present invention 1；
Fig. 4 is the structural representation of air pressure detecting unit in the embodiment of the present invention 1；
Fig. 5 is the structural representation of vacuum unit in the embodiment of the present invention 1；
Fig. 6 is the structural representation of the embodiment of the present invention 2；
In figure：1. apparatus main body, 2. signal detecting unit, 211. liquid reserve tanks, 212. hydraulic pumps, 3. air pressure detecting unit, 311. gas energy storage devices, 312. pulsometers, 4. vacuum unit, 411. vavuum pumps, 5. reversal valve, 6. detection operation platform, 611. detection operation platforms one, 612. detection operation platforms two, 7. hydraulic buffer, 8. liquid-pressure pick-up, 9. baroceptor one, 10. baroceptor two, 11. safty shields, 12. slide blocks, 13. guide rails, 14. universal rolling wheels, 15. connecting tubes one, 16. control centres, 161. control panels, 162. warning feedback devices, 17. connecting tubes two.
Specific embodiment
Below in conjunction with the accompanying drawings further details of elaboration is done to technical scheme with specific embodiment.
Embodiment 1：As depicted in figs. 1 and 2, a kind of double medium detection devices of hydraulic buffer sealing, including apparatus main body 1, the double medium detection devices of the hydraulic buffer sealing also include being arranged on the operational module inside apparatus main body 1, and the operational module includes signal detecting unit 2, air pressure detecting unit 3, vacuum unit 4 and reversal valve 5；Detection operation platform 6 is additionally provided with the top of described device main body 1, the fixed placement of hydraulic buffer 7 is on detection operation platform 6, operational module is connected by reversal valve 5 with the inner chamber of hydraulic buffer 7, can respectively control signal detecting unit 2, vacuum unit 4 or air pressure detecting unit 3 using the action of reversal valve 5 and be operated hydraulic buffer 7 to detect the sealing of hydraulic buffer 7 so as to pass through the double medium of liquids and gases.Detection means in the present embodiment can be before hydraulic buffer be formally irrigated, by double media（That is liquid medium and gas medium）The sealing of hydraulic buffer is detected, it is ensured that the accuracy of testing result, improve product quality, reduce perfusion cost；The present embodiment detects that convenient, efficiency high, stand-by period be short, double media can flexibly be selected according to actual conditions, make full use of the respective advantage of double media, when such as selecting gas medium to be detected, because hydraulic buffer inner chamber is gas, vacuum pumping need not be carried out, air pressure is directly discharged after the completion of detection, operating process is simple, and efficiency is higher；When selecting liquid medium to be detected, the liquid medium is consistent with the liquid that filling process is used, and with more the authenticity of detection, Detection results are more preferable.
As shown in figures 1 and 3, the signal detecting unit 2 includes liquid reserve tank 211 and the hydraulic pump 212 being connected with the pipeline of liquid reserve tank 211, and the hydraulic pump 212 is connected by pipeline with reversal valve 5；Liquid-pressure pick-up 8 is additionally provided with the pipeline of connection hydraulic pump 212 and reversal valve 5.When hydraulic medium is detected, liquid medium is evacuated in the inner chamber of hydraulic buffer 7 from liquid reserve tank 211 by hydraulic pump 212 is irrigated, while detecting fluid pressure using liquid-pressure pick-up 8.In the present embodiment, hydraulic pump 212 adopts bidirectional hydraulic pump, so after the completion of detection, directly the liquid medium in hydraulic buffer inner chamber can be released by bidirectional hydraulic pump, improves efficiency.
As shown in Figure 1 and Figure 4, the air pressure detecting unit 3 includes gas energy storage device 311 and the pulsometer 312 being connected with the pipeline of gas energy storage device 311, and the pulsometer 312 is connected by pipeline with reversal valve 5；Baroceptor 1 is additionally provided with the pipeline of connection pulsometer 312 and reversal valve 5.When air pressure medium is detected, gas medium is poured into the inner chamber of hydraulic buffer 7 by pulsometer 312, while detecting gas pressure using baroceptor 1.
As shown in Figure 1 and Figure 5, the vacuum unit 4 includes vavuum pump 411, and the vavuum pump 411 is connected by pipeline with reversal valve 5；Baroceptor 2 10 is additionally provided with the pipeline of connection vavuum pump 411 and reversal valve 5.Vavuum pump 411 is used for before air pressure detection, and the inner chamber of hydraulic buffer 7 is vacuumized.
As depicted in figs. 1 and 2, the detection operation platform 6 is slidably connected on the top of apparatus main body 1, be additionally provided with safty shield 11 on the centre position at the top of apparatus main body 1, detection operation platform 6 can along the top of apparatus main body 1 through safty shield 11, return and slide.The bottom of detection operation platform 6 is provided with slide block 12, guide rail 13 is provided with the top of apparatus main body 1, be engaged by slide block 12 and guide rail 13 so that detection operation platform 6 is slidably connected on the top of apparatus main body 1, guide rail 13 run through safty shield 11 so that detection operation platform 6 can drive hydraulic buffer 7 together along guide rail 13 through safty shield 11, return and slide.When being detected, a kind of high pressure conditions are in the inner chamber of hydraulic buffer, because the inner chamber of hydraulic buffer is made by rubber bodies, the inner chamber of hydraulic buffer is possible to split, so that the detection medium being filled into hydraulic buffer inner chamber jumps out and testing staff is damaged, for this, the present embodiment is additionally arranged safty shield, in the present embodiment, hydraulic buffer is fed in safty shield by detection operation platform and is detected, the inner chamber of hydraulic buffer splits when so avoiding to detect, the detection medium of the inside jumps out the accident damaged to testing staff to be occurred, improve the security performance of the present embodiment.Safty shield is inverted U, and it can adopt structure of the lucite by main body in combination with metal net mask to make, and can so be further ensured that the safety of testing staff.Universal rolling wheel 14 is additionally provided with the bottom of apparatus main body 1, so that the present embodiment can be moved conveniently.
In the present embodiment, the detection operation platform 6 is provided with one, the reversal valve 5 can adopt four position-5 way valves, signal detecting unit 2, air pressure detecting unit 3 and vacuum unit 4 are connected respectively with three oil inlet and outlets in reversal valve 5, a commutation hydraulic fluid port in reversal valve 5 is connected by connecting tube 1 with the inner chamber of the hydraulic buffer 7 on detection operation platform 6, another commutation hydraulic fluid port in reversal valve 5 is in and blocks state, that is the P hydraulic fluid ports of reversal valve 5 are connected with vacuum unit 4, T1 hydraulic fluid ports are connected with signal detecting unit 2, T2 hydraulic fluid ports are connected with air pressure detecting unit 3, A hydraulic fluid ports are connected by connecting tube 1 with the inner chamber of the hydraulic buffer 7 on detection operation platform 6, B hydraulic fluid ports are in and block state.Reversal valve 5 has four operating positions, respectively：Control vacuum unit 4 is in the operating position of connected state with the inner chamber of hydraulic buffer 7（Now, it is in off-state between the inner chamber of signal detecting unit 2 and air pressure detecting unit 3 and hydraulic buffer 7）, control signal detecting unit 2 and hydraulic buffer 7 operating position of the inner chamber in connected state（Now, it is in off-state between the inner chamber of vacuum unit 4 and air pressure detecting unit 3 and hydraulic buffer 7）, control air pressure detecting unit 2 and hydraulic buffer 7 operating position of the inner chamber in connected state（Now, it is in off-state between the inner chamber of vacuum unit 4 and signal detecting unit 2 and hydraulic buffer 7）And control vacuum unit 4, the operating position of off-state is between signal detecting unit 2 and the inner chamber of air pressure detecting unit 3 and hydraulic buffer 7.Here, reversal valve 5 can also adopt 3 position-5 way valve, and compared with above-mentioned four position-5 way valve, difference is for it：A control vacuum unit 4 is lacked, the operating position of off-state has been between signal detecting unit 2 and the inner chamber of air pressure detecting unit 3 and hydraulic buffer 7.Connecting tube 1 adopts flexible steel in flat section tubing, and it is by the liquid injection hole on hydraulic buffer 7 and hydraulic buffer inner space.
The double medium detection devices of the hydraulic buffer sealing also include control centre 16, and the control centre 16 includes control panel 161, warning feedback device 162 and PLC（Not shown in figure）；The operational module, control panel 161 and warning feedback device 162 are connected with PLC electrical control, and control centre 16 is arranged on safty shield 11.
As shown in Figures 1 to 5, invention additionally discloses a kind of detection method of the double medium detection devices of basis hydraulic buffer sealing as above, the detection method is using the action control signal detecting unit 2 of reversal valve 5 and vacuum unit gas 4 sealing of hydraulic buffer 7 to be detected by medium of liquid, here can also the detection method be using the action control air pressure detecting unit 3 of reversal valve 5 sealing of hydraulic buffer 7 to be detected by medium of gas, can be here with liquid medium and using the action control air pressure detecting unit 3 of reversal valve 5 sealing of hydraulic buffer 7 to be detected in the form of gas combines as medium using the action control signal detecting unit 2 of reversal valve 5 and vacuum unit 4 with the detection method.The detecting step of the present embodiment is simple and convenient, shortens detection time, improves detection efficiency.
It is medium to concretely comprising the following steps that the sealing of hydraulic buffer is detected that the utilization reversal valve controls signal detecting unit and vacuum unit gas with liquid：
1）, PLC control the action of reversal valve 5, using between the action control vacuum unit 4 of reversal valve 5 and the inner chamber of hydraulic buffer 5 in connected state, signal detecting unit 2 and air pressure detecting unit 3 and hydraulic buffer 5 inner chamber between be off；
2）, PLC control vavuum pump 411 open, the inner chamber of hydraulic buffer 5 is vacuumized using vavuum pump 411, after the negative pressure that baroceptor 2 10 detects hydraulic buffer inner chamber reaches the negative pressure value of regulation, PLC control vavuum pump 411 close；
3）, the PLC control actions of reversal valve 5, using being off between the action control vacuum unit 4 of reversal valve 5 and the inner chamber of air pressure detecting unit 3 and hydraulic buffer 7, connected state is between the inner chamber of signal detecting unit 2 and hydraulic buffer 7；
4）, PLC control hydraulic pump 212 open, the liquid medium in liquid reserve tank 211 is injected into the inner chamber of hydraulic buffer 7 using hydraulic pump 212, after the pressure that liquid-pressure pick-up 8 detects hydraulic buffer inner chamber reaches the detection hydraulic pressure value of regulation, detect the pressure of hydraulic buffer inner chamber in a period of time using liquid-pressure pick-up 8（3 to 5 minutes）The interior detection hydraulic pressure that can be maintained at regulation；If can keep, the sealing of hydraulic buffer is judged for qualified, three sound buzzers are sent by warning feedback device, otherwise be then unqualified, light flash and long song are sent by warning feedback device, report to the police until clicking on to eliminate in control panel.
It is medium to concretely comprising the following steps that the sealing of hydraulic buffer is detected to control air pressure detecting unit with gas using reversal valve：
A, PLC control the action of reversal valve 5, are off between the inner chamber of connected state, signal detecting unit 2 and vacuum unit 4 and hydraulic buffer 7 using between the action control air pressure detecting unit 3 of reversal valve 5 and the inner chamber of hydraulic buffer 7；
B, PLC control pulsometer 312 is opened, the gas medium in gas energy storage device 311 is injected into the inner chamber of hydraulic buffer 7 using pulsometer 312, after the pressure that baroceptor 1 detects hydraulic buffer inner chamber reaches the detection gas pressure value of regulation, detect the pressure of hydraulic buffer inner chamber in a period of time using baroceptor 1（3 to 5 minutes）The interior detection gas pressure value that can be maintained at regulation；If can keep, the sealing of hydraulic buffer is judged for qualified, three sound buzzers are sent by warning feedback device, otherwise be then unqualified, light flash and long song are sent by warning feedback device, report to the police until clicking on to eliminate in control panel.
The utilization reversal valve action control signal detecting unit and vacuum unit are with liquid medium and using reversal valve action control air pressure detecting unit when detecting to the sealing of hydraulic buffer in the form of gas combines as medium, be first with the action control signal detecting unit 2 of reversal valve 5 and vacuum unit 4 sealing of hydraulic buffer 7 is detected with liquid medium after, after recycling the action control air pressure detecting unit 3 of reversal valve 5 to be that medium is detected to the sealing of hydraulic buffer 7 or detect to the sealing of hydraulic buffer 7 as medium with gas first with the action control air pressure detecting unit 3 of reversal valve 5 with gas, recycle what the action control signal detecting unit 2 of reversal valve 5 and vacuum unit 3 were detected with liquid medium to the sealing of hydraulic buffer 7, the form combined by above-mentioned pair of medium detection is detected to hydraulic buffer, the accuracy of testing result can be further ensured that.
When hydraulic buffer is detected, it is that hydraulic buffer 7 is fixed on detection operation platform 6, after promoting detection operation platform 6 to drive hydraulic buffer 7 together along the top slide of apparatus main body 1 to safty shield 11, detected again, the personal safety of testing staff is this ensure that, the security of the present embodiment is improve.
Embodiment 2：As shown in fig. 6, compared with Example 1, difference is：The detection operation platform 6 is provided with two, and it is respectively detection operation platform 1 and detection operation platform 2 612；2 612 points of detection operation platform 1 and detection operation platform are two side positions positioned at safty shield 11.The reversal valve 5 can adopt four position-5 way valves, signal detecting unit 2, air pressure detecting unit 3 and vacuum unit 4 are connected respectively with three oil inlet and outlets in reversal valve 5, a commutation hydraulic fluid port in reversal valve 5 is connected by connecting tube 1 with the inner chamber of the hydraulic buffer 7 on detection operation platform 1, another commutation hydraulic fluid port in reversal valve 5 is connected by connecting tube 2 17 with the inner chamber of the hydraulic buffer 7 on detection operation platform 2 612, that is the P hydraulic fluid ports of reversal valve 5 are connected with vacuum unit 4, T1 hydraulic fluid ports are connected with signal detecting unit 2, T2 hydraulic fluid ports are connected with air pressure detecting unit 3, A hydraulic fluid ports are connected by connecting tube 1 with the inner chamber of the hydraulic buffer 7 on detection operation platform 1, B hydraulic fluid ports are connected by connecting tube 2 17 with the inner chamber of the hydraulic buffer 7 on detection operation platform 2 612, valve one is also respectively provided with the connecting tube 1 and connecting tube 2 17（Not shown in figure）With valve two（Not shown in figure）, for controlling the opening and closing of connecting tube one and connecting tube two, connecting tube 1 and connecting tube 2 17 adopt flexible steel in flat section tubing.Here, reversal valve 5 can also adopt 3 position-5 way valve.
The present embodiment is also disclosed a kind of detection method of the double medium detection devices of basis hydraulic buffer sealing as above, and compared with the detection method in embodiment 1, difference is for it：The utilization reversal valve control signal detecting unit and vacuum unit gas with liquid as medium the sealing of hydraulic buffer is detected when or using reversal valve control air pressure detecting unit with gas as medium the sealing of hydraulic buffer is detected when, it is that first a hydraulic buffer 7 is fixed on detection operation platform 1, a commutation hydraulic fluid port in reversal valve 5 is coupled together with the inner chamber of one hydraulic buffer 7 by connecting tube 1, then detection operation platform 1 is promoted along guide rail, it is set to drive the hydraulic buffer 7 on detection operation platform 1 to move on the centre position at the top of apparatus main body 1 and in safty shield 11, valve one is opened again（Not shown in figure）Signal detecting unit 2 is controlled using reversal valve 5 and vacuum unit 4 is detected to the sealing of hydraulic buffer 7 as medium with liquid or controls air pressure detecting unit 3 using reversal valve 5 sealing of hydraulic buffer 7 is detected by medium of gas, valve two now（Not shown in figure）It is closed；While detection, another hydraulic buffer 7 is fixed on detection operation platform 2 612, then another the commutation hydraulic fluid port in reversal valve 5 is coupled together with the inner chamber of another hydraulic buffer 7 by connecting tube 2 17, the state to be detected such as entrance；After the hydraulic buffer 7 on detection operation platform 1 completes detection, valve one is closed（Not shown in figure）Detection operation platform 1 is promoted along a side position of backtracking to safty shield 11, promote detection operation platform 2 612 along guide rail simultaneously, make it drive the hydraulic buffer 7 on detection operation platform 2 612 to move on the centre position at the top of apparatus main body 1 and in safty shield 11, open valve two（Not shown in figure）Recycling reversal valve 5 controls signal detecting unit 2 and vacuum unit gas 4 is detected to the sealing of hydraulic buffer 7 as medium with liquid or controls air pressure detecting unit 3 using reversal valve 5 sealing of hydraulic buffer 7 is detected by medium of gas；When hydraulic buffer 7 on detection operation platform 2 612 is detected, next hydraulic buffer 7 to be detected is dismantled and more finished changing to the hydraulic buffer 7 on detection operation platform 1 completed to detection, the inner chamber of the hydraulic buffer 7 to be detected with the next one of a commutation hydraulic fluid port in reversal valve 5 is coupled together by connecting tube 1, the state to be detected such as entrance；After the hydraulic buffer 7 on detection operation platform 2 612 completes detection, valve two is closed（Not shown in figure）Detection operation platform 2 612 is promoted along the other side position of backtracking to safty shield, while promoting detection operation platform 1 to slide into safty shield 11 again along guide rail, valve one is opened（Not shown in figure）Proceed detection, so detected using detection operation platform one and the alternate cycles of detection operation platform two, until completing the detection work of all hydraulic shock absorber.Detection means in the present embodiment is duplexing level detecting apparatus, and such two stations are circulated, and it can greatly improve the detection efficiency of hydraulic buffer, reduces and even eliminate the dress stand-by period, reduces the production cost of hydraulic buffer.
In sum, the present invention can be before hydraulic buffer be formally irrigated, the sealing of hydraulic buffer is detected by double media, ensure that the accuracy of testing result, improve product quality, reduce perfusion cost and its detecting step is simple and convenient, shorten detection time, improve detection efficiency.The present invention detects that convenient, efficiency high, stand-by period be short, double media can flexibly be selected according to actual conditions, make full use of the respective advantage of double media, when such as selecting gas medium to be detected, because hydraulic buffer inner chamber is gas, vacuum pumping need not be carried out, air pressure is directly discharged after the completion of detection, operating process is simple, and efficiency is higher；When selecting liquid medium to be detected, the liquid medium is consistent with the liquid that filling process is used, and with more the authenticity of detection, Detection results are more preferable.By setting up safty shield, it is to avoid the inner chamber of hydraulic buffer splits during detection, the detection medium inside inner chamber jumps out the accident damaged to testing staff to be occurred, and improves the security performance of the present invention.By arranging double so that the present invention is circulated detection using two stations, it can greatly improve the detection efficiency of hydraulic buffer, reduce and even eliminate the dress stand-by period, reduce the production cost of hydraulic buffer.
Above example is used for illustrative purposes only; rather than limitation of the present invention; person skilled in the relevant technique is without departing from the spirit and scope of the present invention; can also make a variety of changes or convert; therefore the technical scheme of all equivalents should also belong to protection scope of the present invention, and protection scope of the present invention should be limited by each claim.
Claims (10)
1. a kind of double medium detection devices of hydraulic buffer sealing, including apparatus main body, it is characterised in that：The double medium detection devices of the hydraulic buffer sealing also include being arranged on the operational module inside apparatus main body, and the operational module includes signal detecting unit, air pressure detecting unit, vacuum unit and reversal valve；Detection operation platform is additionally provided with the top of described device main body, hydraulic buffer fixed placement is on detection operation platform, operational module is connected by reversal valve with the inner chamber of hydraulic buffer, can respectively control signal detecting unit, vacuum unit or air pressure detecting unit using commutation valve events and be operated hydraulic buffer to detect the sealing of hydraulic buffer so as to pass through the double medium of liquids and gases.
2. the double medium detection device of hydraulic buffer sealing according to claim 1, it is characterised in that：The signal detecting unit includes liquid reserve tank and the hydraulic pump being connected with liquid reserve tank pipeline, and the hydraulic pump is connected by pipeline with reversal valve；Liquid-pressure pick-up is additionally provided with the pipeline of connection hydraulic pump and reversal valve.
3. the double medium detection device of hydraulic buffer sealing according to claim 1, it is characterised in that：The air pressure detecting unit includes gas energy storage device and the pulsometer being connected with gas energy storage device pipeline, and the pulsometer is connected by pipeline with reversal valve；Baroceptor one is additionally provided with the pipeline of connection pulsometer and reversal valve.
4. the double medium detection devices of hydraulic buffer sealing according to any one claim in claims 1 to 3, it is characterised in that：The detection operation platform is slidably connected on the top of apparatus main body, is additionally provided with safty shield on the centre position at the top of apparatus main body, detection operation platform can along apparatus main body top through safty shield, return and slide.
5. the double medium detection device of hydraulic buffer sealing according to claim 4, it is characterised in that：The detection operation platform is provided with two, and it is respectively detection operation platform one and detection operation platform two, and two points of detection operation platform one and detection operation platform are two side positions positioned at safty shield；The reversal valve is using four position-5 way valves or 3 position-5 way valve, signal detecting unit, air pressure detecting unit and vacuum unit are connected respectively with three oil inlet and outlets in reversal valve, a commutation hydraulic fluid port in reversal valve is connected by connecting tube one with the inner chamber of the hydraulic buffer on detection operation platform one, and another the commutation hydraulic fluid port in reversal valve is connected by connecting tube two with the inner chamber of the hydraulic buffer on detection operation platform two；The valve one and valve two for controlling the opening and closing of connecting tube one and the opening and closing of connecting tube two is also respectively provided with the connecting tube one and connecting tube two.
6. the double medium detection device of hydraulic buffer sealing according to claim 4, it is characterised in that：The double medium detection devices of the hydraulic buffer sealing also include control centre, and the control centre includes control panel, warning feedback device and PLC；The operational module, control panel and warning feedback device are connected with PLC electrical control.
7. the detection method of the double medium detection device of a kind of hydraulic buffer sealing according to any one claim in claim 1 to 6, it is characterised in that：The detection method is using reversal valve action control signal detecting unit and vacuum unit gas the sealing of hydraulic buffer to be detected by medium of liquid
Or the detection method is using reversal valve action control air pressure detecting unit the sealing of hydraulic buffer to be detected by medium of gas
Or the detection method is with liquid medium and using reversal valve action control air pressure detecting unit the sealing of hydraulic buffer to be detected in the form of gas combines as medium using reversal valve action control signal detecting unit and vacuum unit.
8. detection method according to claim 7, it is characterised in that：The signal detecting unit includes liquid reserve tank and the hydraulic pump being connected with liquid reserve tank pipeline, and the hydraulic pump is connected by pipeline with reversal valve；Liquid-pressure pick-up is additionally provided with the pipeline of connection hydraulic pump and reversal valve；
The air pressure detecting unit includes gas energy storage device and the pulsometer being connected with gas energy storage device pipeline, and the pulsometer is connected by pipeline with reversal valve；Baroceptor one is additionally provided with the pipeline of connection pulsometer and reversal valve；
The vacuum unit includes vavuum pump, and the vavuum pump is connected by pipeline with reversal valve；Baroceptor two is additionally provided with the pipeline of connection reversal valve and vavuum pump；
It is medium to concretely comprising the following steps that the sealing of hydraulic buffer is detected that the utilization reversal valve controls signal detecting unit and vacuum unit gas with liquid：
1）, using between reversal valve action control vacuum unit and the inner chamber of hydraulic buffer be in connected state, be off between signal detecting unit and air pressure detecting unit and the inner chamber of hydraulic buffer；
2）, control vavuum pump open, the inner chamber of hydraulic buffer is vacuumized using vavuum pump, after the negative pressure that baroceptor two detects hydraulic buffer inner chamber reaches the negative pressure value of regulation, control vavuum pump close；
3）, using being off between reversal valve action control vacuum unit and air pressure detecting unit and the inner chamber of hydraulic buffer, connected state is between signal detecting unit and the inner chamber of hydraulic buffer；
4）, control hydraulic pump open, the liquid medium in liquid reserve tank is injected into the inner chamber of hydraulic buffer using hydraulic pump, after the pressure of hydraulic buffer inner chamber reaches the detection hydraulic pressure value of regulation, detect that can the pressure of hydraulic buffer inner chamber be maintained at the detection hydraulic pressure of regulation using liquid-pressure pick-up；If can keep, the sealing of hydraulic buffer is judged for qualified, otherwise be then unqualified；
It is medium to concretely comprising the following steps that the sealing of hydraulic buffer is detected to control air pressure detecting unit with gas using reversal valve：
A, using between reversal valve action control air pressure detecting unit and the inner chamber of hydraulic buffer be in connected state, be off between signal detecting unit and vacuum unit and the inner chamber of hydraulic buffer；
B, control pulsometer are opened, the gas medium in gas energy storage device is injected into the inner chamber of hydraulic buffer using pulsometer, after the pressure of hydraulic buffer inner chamber reaches the detection gas pressure value of regulation, detect that can the pressure of hydraulic buffer inner chamber be maintained at the detection gas pressure value of regulation using baroceptor one；If can keep, the sealing of hydraulic buffer is judged for qualified, otherwise be then unqualified；
The utilization reversal valve action control signal detecting unit and vacuum unit are with liquid medium and using reversal valve action control air pressure detecting unit when detecting to the sealing of hydraulic buffer in the form of gas combines as medium, be first with reversal valve action control signal detecting unit and vacuum unit the sealing of hydraulic buffer is detected with liquid medium after, recycle reversal valve action control air pressure detecting unit to be detected to the sealing of hydraulic buffer as medium with gas
Or after detecting to the sealing of hydraulic buffer as medium with gas first with reversal valve action control air pressure detecting unit, recycle what reversal valve action control signal detecting unit and vacuum unit were detected with liquid medium to the sealing of hydraulic buffer.
9. detection method according to claim 8, it is characterised in that：The detection operation platform is slidably connected on the top of apparatus main body, is additionally provided with safty shield on the centre position at the top of apparatus main body, detection operation platform can along apparatus main body top through safty shield, return and slide；
It is that hydraulic buffer is fixed on detection operation platform when hydraulic buffer is detected, after promoting detection operation platform to drive hydraulic buffer together along apparatus main body top slide to safty shield, then detected.
10. detection method according to claim 9, it is characterised in that：The detection operation platform is provided with two, and it is respectively detection operation platform one and detection operation platform two, and two points of detection operation platform one and detection operation platform are two side positions positioned at safty shield；The reversal valve is using four position-5 way valves or 3 position-5 way valve, signal detecting unit, air pressure detecting unit and vacuum unit are connected respectively with three oil inlet and outlets in reversal valve, a commutation hydraulic fluid port in reversal valve is connected by connecting tube one with the inner chamber of the hydraulic buffer on detection operation platform one, and another the commutation hydraulic fluid port in reversal valve is connected by connecting tube two with the inner chamber of the hydraulic buffer on detection operation platform two；The valve one and valve two for controlling the opening and closing of connecting tube one and the opening and closing of connecting tube two is also respectively provided with the connecting tube one and connecting tube two；
The utilization reversal valve control signal detecting unit and vacuum unit gas with liquid as medium the sealing of hydraulic buffer is detected when or using reversal valve control air pressure detecting unit with gas as medium the sealing of hydraulic buffer is detected when, it is that first a hydraulic buffer is fixed on detection operation platform one, a commutation hydraulic fluid port in reversal valve is coupled together with the inner chamber of one hydraulic buffer by connecting tube one, then detection operation platform one is promoted, it is set to drive on the centre position that the hydraulic buffer on detection operation platform one moves at the top of apparatus main body and in safty shield, open valve one again to control signal detecting unit and vacuum unit using reversal valve and detect the sealing of hydraulic buffer as medium with liquid or control air pressure detecting unit using reversal valve to detect the sealing of hydraulic buffer by medium of gas, valve two now is closed；While detection, another hydraulic buffer is fixed on detection operation platform two, is then coupled together another the commutation hydraulic fluid port in reversal valve with the inner chamber of another hydraulic buffer by connecting tube two, the state to be detected such as entrance；After the hydraulic buffer on detection operation platform one completes detection, close valve one, detection operation platform one is promoted along backtracking, detection operation platform two is promoted simultaneously, it is set to drive on the centre position that the hydraulic buffer on detection operation platform two moves at the top of apparatus main body and in safty shield, the opening recycling reversal valve of valve two controls signal detecting unit and vacuum unit gas is detected to the sealing of hydraulic buffer as medium with liquid or controls air pressure detecting unit using reversal valve the sealing of hydraulic buffer is detected by medium of gas；When hydraulic buffer on detection operation platform two is detected, next hydraulic buffer to be detected is dismantled and more finished changing to the hydraulic buffer on detection operation platform one completed to detection, the inner chamber of the hydraulic buffer to be detected with the next one of a commutation hydraulic fluid port in reversal valve is coupled together by connecting tube one, the state to be detected such as entrance；After the hydraulic buffer on detection operation platform two completes detection, close valve two and promote detection operation platform two along backtracking, detection operation platform one is promoted to slide into safty shield again simultaneously, open valve one and proceed detection, so detected using detection operation platform one and the alternate cycles of detection operation platform two, until completing the detection work of all hydraulic shock absorber.
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| CN111103135A (en) * | 2019-12-05 | 2020-05-05 | 福建福清核电有限公司 | Nuclear reactor hydrodynamic pressure type main pump mechanical seal reusability inspection method |
| CN112362247A (en) * | 2020-09-27 | 2021-02-12 | 万向一二三股份公司 | Lithium ion battery pack electrolyte leakage detection device and method |
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