CN205956117U - Let out leakage quantity measuring device in arbitrary stroke position of pneumatic cylinder is small - Google Patents
Let out leakage quantity measuring device in arbitrary stroke position of pneumatic cylinder is small Download PDFInfo
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- CN205956117U CN205956117U CN201620032085.6U CN201620032085U CN205956117U CN 205956117 U CN205956117 U CN 205956117U CN 201620032085 U CN201620032085 U CN 201620032085U CN 205956117 U CN205956117 U CN 205956117U
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- hydraulic cylinder
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- internal leakage
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Abstract
The utility model discloses a let out leakage quantity measuring device in arbitrary stroke position of pneumatic cylinder is small apparatus, it includes displacement sensor, graduated flask, hydraulic pressure coupling, data collection card, billet, flange, supporting seat, test bench rack. Wherein displacement sensor one end is passed through the supporting seat and is fixed on the rack, the other end connects to be connected with the billet to be fixed on the piston rod, displacement sensor acts as go -between, piston rod central line and billet central line are in perpendicular to the ground's coplanar, and displacement sensor acts as go -between parallelly in this plane with the piston rod central line, the hookup of kong bingyu hydraulic pressure coupling is got through together in the graduated flask bottom, guarantee that the graduated flask central line aligns with the coupling central line, another termination pneumatic cylinder oil -out of hydraulic pressure coupling, two initial moment liquid level readings in the record graduated flask obtain hydraulic oil volume change. Use this device, can accurately measure the pneumatic cylinder and let out leakage quantity in, have the local pneumatic cylinder of pulling or wearing and tearing to the cylinder inner wall very much and let out leakage quantity in small and measure.
Description
Technical field
The utility model is related to a kind of small internal leakage measurement apparatus in hydraulic cylinder arbitrary distance of run position, more particularly, in cylinder barrel
There are the measurement apparatus of the hydraulic cylinder interior leakage leakage quantity of local damage in wall.
Background technology
The modal fault of hydraulic cylinder is internal leakage, leads to it mainly to have the reason producing internal leakage：The pulling of inner wall of cylinder,
Abrasion and the damage of piston seal.According to JB/T10205-2010《Hydraulic cylinder》The regulation of middle performance requirement, to hydraulic pressure
Cylinder carries out type inspection all to be needed to measure its internal leakage with during exfactory inspection, and measuring method is set forth in GB GB/T15622-2005
《Hydraulic cylinder test method》In, the experimental rig measuring has loading cylinder horizontal addload experimental rig and weight simulation loading to try
Experiment device, GB GB/T15622-2005《Hydraulic cylinder test method》The method of middle internal leakage measurement is described as " making by test solution
Cylinder pressure working chamber oil-feed, is forced into rated pressure or user's specified pressure, measures the leakage rate leaking to non-pressurizing chamber through piston ",
And in the method for stroke when specifically how to measure leakage rate and the measurement leaking to non-pressurizing chamber through piston position not
It is described in detail.
The current measuring method of hydraulic cylinder interior leakage leakage mainly has：Pressurize method, sedimentation, the direct method of measurement.Wherein, pressurize
Method cannot be quantitative measure internal leakage；Sedimentation measure error is larger cannot accurately to measure small internal leakage；Direct measurement
The position of method measurement can be only in the two ends of hydraulic cylinder travel, and hydraulic cylinder arbitrary distance of run position inner wall of cylinder is existed pull or
Then cannot measure during person's abrasion, refer to use lubricating cup in patent CN202441672U hydraulic jack internal leakage detection apparatus, lead to
Cross and observe the change of its liquid level scale to measure internal leakage, but this measurement apparatus is only applicable to measure in hydraulic cylinder travel two ends and lets out
Leakage quantity.
At present, measure the internal leakage of a certain position in hydraulic cylinder travel, method is the certain weight of loaded hydraulic cylinder
Piston is parked in the position needing to measure internal leakage, such as patent CN202690588U, when hydraulic cylinder produces leakage by measurement
The change in location of hydraulic cylinder piston rod is calculating internal leakage, but this method of testing have ignored hydraulic cylinder due to fluid compression, sealing
The piston position change that part extruding is leaked with hydraulic valve piece and leads to, the Volume Changes that this change in location causes can have a strong impact on small
The degree of accuracy of internal leakage test, during simultaneously for the internal leakage measuring under different loads pressure, this device needs not stop to change to bear
Loads, thus, design a kind of device that can accurately be convenient for measuring hydraulic cylinder arbitrary distance of run position internal leakage and be extremely necessary.
The utility model is using GB GB/T15622-2005《Hydraulic cylinder test method》Middle loading cylinder horizontal addload experimental rig base
Liquid level sensor, displacement transducer, graduated cylinder are increased on plinth carrying out accurately measuring of arbitrary distance of run position internal leakage.
Utility model content
Main purpose of the present utility model is：There is provided a kind of hydraulic cylinder arbitrary distance of run position small internal leakage measurement apparatus,
This device can measure the small internal leakage of hydraulic cylinder arbitrary distance of run position, and can preferably ensure internal leakage accuracy of measurement.
The utility model provide a kind of small internal leakage measurement apparatus in hydraulic cylinder arbitrary distance of run position it is characterised in that：
Comprise displacement transducer one end to be fixed on bed stand by support base, the other end is connected with steel bar by bolt, and steel bar is another
Hole in one end, fixing on the piston rod by bolt and adpting flange.
It is characterized in that：Comprise graduated cylinder, graduated cylinder is linked together with hydraulic fitting, the hydraulic fitting other end connects hydraulic pressure
Cylinder rod chamber hydraulic fluid port.
It is characterized in that：Gather piston rod movement change in displacement by displacement transducer, simultaneously by displacement transducer Lai
The moment that record liquid level flies up and liquid level stop the moment rising, when the time interval between both moment as measures effective
Between.
Using the small internal leakage measurement apparatus in the utility model hydraulic cylinder arbitrary distance of run position, hydraulic cylinder can be accurately measured
Internal leakage, especially there is local to inner wall of cylinder and pull or wear and tear and lead to the measurement of the small internal leakage of hydraulic cylinder.
Compare other measurement apparatus, the utility model measurement apparatus have following advantage：1) any row of hydraulic cylinder can be measured
The internal leakage of journey position；2) can exclude and the impact that measurement produces is leaked with valve member leakage to hydraulic cylinder due to fluid compression；3)
The relatively easy use of apparatus structure, testing result is more accurate.
Brief description
Accompanying drawing 1 is the structural representation of the small internal leakage measurement apparatus in the utility model hydraulic cylinder arbitrary distance of run position.
Accompanying drawing 2 is this practical hydraulic cylinder arbitrary distance of run position small internal leakage measurement apparatus displacement data collecting flowchart figure.
Description of symbols in accompanying drawing 1：1st, tested hydraulic cylinder rodless cavity hydraulic fluid port 2, bed stand 3, tested hydraulic cylinder 4,
Tested hydraulic cylinder rod chamber hydraulic fluid port 5, hydraulic fitting 6, graduated cylinder 7, support base 8, displacement transducer 9, displacement transducer
Bracing wire 10, bracing wire joint 11, steel bar 12, adpting flange 13, loading hydraulic cylinder.
Specific embodiment
In conjunction with accompanying drawing, specific embodiment of the present utility model is described further.
The small internal leakage measurement apparatus in hydraulic cylinder arbitrary distance of run position as shown in Figure 1, it is solid that tested hydraulic cylinder 3 passes through bolt
It is scheduled on support base 7, support base 7 is fixed on bed stand 2, the piston rod head of tested hydraulic cylinder 3 passes through connection method
Blue 12 are fixed on loading hydraulic cylinder 13.
Displacement transducer 8 is fixed by screws on support base 7, the bracing wire joint of displacement transducer bracing wire 9 other end
10 are fixed by screws on the steel bar 11 of customization, and the other end of steel bar is bolted on adpting flange 12, connect
Flange 12 and piston rod are joined directly together, and wherein the bracing wire 9 of displacement transducer, piston rod center line and steel bar 11 center line are located at
Perpendicular to the same plane on ground, and displacement transducer bracing wire 9 and piston rod center line are in this plane in parallel.
Hole is got through in graduated cylinder 6 bottom, is linked together with hydraulic cylinder pipe joint 5, hydraulic cylinder pipe joint 5 other end and piston
Bar rod chamber hydraulic fluid port 4 is connected, and ensures that the center line of graduated cylinder 6 is alignd with the center line of hydraulic fitting 5.
This hydraulic cylinder arbitrary distance of run position small internal leakage measurement apparatus specific works step is as follows：
Tested hydraulic cylinder piston is parked in the travel position needing to measure internal leakage, the back pressure adjusting loading hydraulic cylinder side makes
It forms load, and adds some hydraulic oil toward tested hydraulic cylinder 3 rod chamber graduated cylinder so as to liquid level exceeds the initial of graduated cylinder 6 scale
Position, and record its initial liquid level scale value.
The signal of collection displacement transducer 8, and toward the pressurization of tested hydraulic cylinder rodless cavity side, through observing after a period of time
The change of graduated cylinder 6 liquid level, records the scale value of now graduated cylinder 6 liquid level, obtains the displacement signal collecting simultaneously, obtain piston
Bar displacement original position and difference DELTA S of terminal position, also obtain the initial time of Displacement Saltation and the difference in end moment
ΔT.
The change in location that displacement transducer 8 is obtained is multiplied by the effective area of tested cylinder rod chamber, is calculated because of piston rod
Change in location and the graduated cylinder 6 volume incrementss Δ V that produces1, the difference being calculated the initial two liquid level scales of graduated cylinder 6 obtains
ΔV2, leakage rate Δ q is obtained by computing formula：
In sum, the internal leakage of hydraulic cylinder arbitrary distance of run position can be accurately measured using this device；It should be noted that：
This method of testing of hydraulic cylinder to different installation forms is also feasible, thus also in protection domain of the present utility model.
Claims (4)
1. the small internal leakage in hydraulic cylinder arbitrary distance of run position measurement apparatus, be mainly made up of displacement transducer, graduated cylinder, hydraulic fitting, steel bar, adpting flange, support base, bed stand it is characterised in that：It comprises displacement transducer, its one end is fixed on bed stand, the other end is connected with steel bar by bolt, the steel bar other end is holed, it is connected with piston rod with flange by bolt, the bracing wire of displacement transducer, piston rod center line and steel bar center line are located normal to the same plane on ground, and displacement transducer bracing wire and piston rod center line are in this plane in parallel.
2. the small internal leakage measurement apparatus in hydraulic cylinder arbitrary distance of run position according to claim 1 it is characterised in that：Comprise graduated cylinder, graduated cylinder bottom is got through Kong Bingyu hydraulic fitting and is bonded together it is ensured that the center line of graduated cylinder is alignd with the center line line of hydraulic fitting, and perpendicular to ground, the hydraulic fitting other end connects hydraulic cylinder rod chamber hydraulic fluid port.
3. the small internal leakage measurement apparatus in hydraulic cylinder arbitrary distance of run position according to claim 1 it is characterised in that：Record the moment that the moment that liquid level flies up and liquid level stop rising by displacement transducer, the time interval between both moment as measures effective time.
4. the small internal leakage measurement apparatus in hydraulic cylinder arbitrary distance of run position according to claim 1 or 2 or 3 it is characterised in that：The internal leakage of hydraulic cylinder arbitrary distance of run position can be detected exactly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620032085.6U CN205956117U (en) | 2016-01-13 | 2016-01-13 | Let out leakage quantity measuring device in arbitrary stroke position of pneumatic cylinder is small |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620032085.6U CN205956117U (en) | 2016-01-13 | 2016-01-13 | Let out leakage quantity measuring device in arbitrary stroke position of pneumatic cylinder is small |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205956117U true CN205956117U (en) | 2017-02-15 |
Family
ID=57966458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620032085.6U Expired - Fee Related CN205956117U (en) | 2016-01-13 | 2016-01-13 | Let out leakage quantity measuring device in arbitrary stroke position of pneumatic cylinder is small |
Country Status (1)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374816A (en) * | 2018-03-05 | 2018-08-07 | 中南大学 | Leak detection apparatus and the detection method using the device in a kind of hydraulic pressure |
| CN108895060A (en) * | 2018-09-10 | 2018-11-27 | 江阴市洪腾机械有限公司 | A kind of built-in stroke measurment hydraulic cylinder |
| CN110552933A (en) * | 2019-08-30 | 2019-12-10 | 徐州徐工液压件有限公司 | Device and method for monitoring leakage rate in hydraulic cylinder in real time |
| CN110586304A (en) * | 2019-08-12 | 2019-12-20 | 宜兴天山水泥有限责任公司 | Anti-vibration displacement sensor device |
| CN111075794A (en) * | 2020-01-10 | 2020-04-28 | 上海振华重工(集团)股份有限公司 | Method and device for monitoring leakage of hydraulic system |
| CN113916430A (en) * | 2021-10-11 | 2022-01-11 | 芜湖哈特机器人产业技术研究院有限公司 | Hydraulic jack pressure detection device and hydraulic jack pressure detection method |
| CN114923524A (en) * | 2022-05-26 | 2022-08-19 | 浙江工业大学 | Nuclear power pipeline ice plug safety test device |
-
2016
- 2016-01-13 CN CN201620032085.6U patent/CN205956117U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374816A (en) * | 2018-03-05 | 2018-08-07 | 中南大学 | Leak detection apparatus and the detection method using the device in a kind of hydraulic pressure |
| CN108895060A (en) * | 2018-09-10 | 2018-11-27 | 江阴市洪腾机械有限公司 | A kind of built-in stroke measurment hydraulic cylinder |
| CN110586304A (en) * | 2019-08-12 | 2019-12-20 | 宜兴天山水泥有限责任公司 | Anti-vibration displacement sensor device |
| CN110552933A (en) * | 2019-08-30 | 2019-12-10 | 徐州徐工液压件有限公司 | Device and method for monitoring leakage rate in hydraulic cylinder in real time |
| CN111075794A (en) * | 2020-01-10 | 2020-04-28 | 上海振华重工(集团)股份有限公司 | Method and device for monitoring leakage of hydraulic system |
| CN111075794B (en) * | 2020-01-10 | 2022-06-14 | 上海振华重工(集团)股份有限公司 | Method and device for monitoring leakage of hydraulic system |
| CN113916430A (en) * | 2021-10-11 | 2022-01-11 | 芜湖哈特机器人产业技术研究院有限公司 | Hydraulic jack pressure detection device and hydraulic jack pressure detection method |
| CN114923524A (en) * | 2022-05-26 | 2022-08-19 | 浙江工业大学 | Nuclear power pipeline ice plug safety test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20190113 |