CN201885858U - Dynamic hydraulic prop detection system - Google Patents
Dynamic hydraulic prop detection system Download PDFInfo
- Publication number
- CN201885858U CN201885858U CN2010205899552U CN201020589955U CN201885858U CN 201885858 U CN201885858 U CN 201885858U CN 2010205899552 U CN2010205899552 U CN 2010205899552U CN 201020589955 U CN201020589955 U CN 201020589955U CN 201885858 U CN201885858 U CN 201885858U
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- CN
- China
- Prior art keywords
- hydraulic prop
- valve
- hydraulic
- pressure
- test stand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 239000000839 emulsion Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000005065 mining Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 7
- 230000003068 static effect Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001234523 Velamen Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
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Abstract
The utility model discloses a dynamic hydraulic prop detection system. An up-to-standard hydraulic prop and a hydraulic prop to be detected are respectively arranged on both sides of a horizontal test rack; the hydraulic system arranges two liquid supply pipelines on an emulsion pump, one of the liquid supply pipelines supplies liquid to the up-to-standard hydraulic prop, the other liquid supply pipeline supplies the liquid to the hydraulic prop to be detected, and the two liquid supply pipelines are respectively connected with a valve, a pressure sensor and a pressure display; a three-way valve is arranged on the pipe for supplying the liquid to the up-to-standard hydraulic prop, and is then connected with a constant-pressure valve through the oil supply pipe, and the constant-pressure valve is then communicated with the emulsion pump; and the signal cables of the two pressure displays are connected with the data input ports of a computer. By means of dynamic detection, the system can detect the whole movable sealing surface of the hydraulic prop, so that substandard hydraulic props can be prevented from being used on coal-mining faces, and thereby roof accidents can be prevented.
Description
Technical field
The utility model relates to the hydraulic product checkout equipment.
Background technology
Hydraulic prop is the support apparatus that present coal mining workplace generally adopts.After the new type hydraulic pillar dispatches from the factory or uses certain hour, all to the sealing property of hydraulic prop be detected,, prevent that roof accident from taking place to guarantee the reliability of its supporting.Present detection mode all is the Static Detection mode, and the Static Detection system is made up of test stand, hydraulic system, pressure transducer and pressure display unit.Suppress the retention value of observed pressure afterwards to pillar,, illustrate that product is qualified as not release at the appointed time.But in the detection of old hydraulic prop, find following problem, owing to corrosion, the bending of old hydraulic prop, reason such as damage,, show that sealing is good though keep certain pressure when detecting, but one the insufficient pressure problem occurs when use the down-hole, brings hidden danger for the colliery production safety.Its reason is to suppress when detecting, and is only limited on the surface of contact of piston and cylinder barrel, does not obtain actual detected on other surface of contact of whole cylinder barrel.
Summary of the invention
The purpose of this utility model is for overcoming the deficiency of existing Static Detection mode, a kind of hydraulic prop dynamic detection system is provided, making all sealing surfaces of hydraulic prop can both obtain detecting.
The technical scheme that the utility model is taked is: it comprises test stand, hydraulic system, pressure transducer, pressure display unit and computer system, it is characterized in that, described test stand is the test stand of a horizontal, the effective length of test stand can be put into two hydraulic props to the top, test stand one end is placed intact qualified hydraulic prop, and the other end is placed tested hydraulic prop; Described hydraulic system is to be provided with two feed flow pipelines on emulsion pump, and one is intact qualified hydraulic prop feed flow, and one is tested hydraulic prop feed flow, is connected with valve, pressure transducer and pressure display unit respectively on two feed flow pipelines; Wherein be provided with T-valve on the intact qualified hydraulic prop feed pipe, connecting a constant pressure valve by feed pipe again on the T-valve, constant pressure valve is connected with emulsion pump again; The signal wire of two pressure display units is connected with the computer data input port.
The principle of work and the method for operating of the utility model detection of dynamic are: at first an intact qualified hydraulic prop and another velamen detection hydraulic prop are placed on the test stand, the plunger end of two hydraulic props is relative direction, and makes earlier in the post withdrawal cylinder barrel alive; Suppress fluid injection for earlier intact qualified hydraulic prop, post alive is stretched out withstand on the tested hydraulic prop, after injecting certain pressure, the crossover tee valve is communicated with constant pressure valve, make its constant pressure, and then suppress fluid injection for tested hydraulic prop, the post alive of tested hydraulic prop slowly returns the capital alive of intact hydraulic prop, in the process of pushing up back, because the principle that action and reaction equates, as long as the intact seal request that meets of tested hydraulic prop, the gland of two pressure display units equates that computing machine output straight line is when curve occurring, illustrate that there is scar tested hydraulic prop certain, is defective hydraulic prop.
Good effect of the present utility model is, by detection of dynamic, the whole sealing all-moving surface (the whole internal face of cylinder body) of hydraulic prop can both be detected, thereby avoided underproof hydraulic prop to use on the coal face, prevents the generation of roof accident.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model embodiment.
Marginal data: 1-test stand; The tested hydraulic prop of 2-; The intact qualified hydraulic prop of 3-; The 4-emulsion pump; 5,5 '-valve; 6,13-pressure transducer; 7,14-pressure display unit; 8,12-feed flow pipeline; The 9-computing machine; 10-three road valves; The 11-constant pressure valve.
Embodiment
With reference to the accompanying drawings, further specify the utility model embodiment.
As shown in Figure 1, structure of the present utility model is: it comprises a test stand 1, and test stand 1 is the test stand of a horizontal, and the effective length of test stand 1 can be put into two hydraulic props to the top, one end of test stand 1 is placed intact qualified hydraulic prop 3, and another side is placed tested hydraulic prop 2; Described hydraulic system is to be provided with two feed flow pipelines on emulsion pump 4, article one, be intact qualified hydraulic prop 3 feed flows, article one, be tested hydraulic prop 2 feed flows, be connected with valve 5, pressure transducer 6 and pressure display unit 7 on the tested hydraulic prop 2 feed flow pipelines; Be connected with on the intact qualified hydraulic prop 3 feed flow pipelines valve 5 ', pressure transducer 13 and pressure display unit 14; Wherein intact qualified hydraulic prop 3 feed pipes are provided with T-valve 10, connect a constant pressure valve 11 by feed pipe again on the T-valve 10, and constant pressure valve 11 is connected with emulsion pump 4 again; Pressure display unit 7 is connected with computing machine 9 data input ports with 14 signal wire.
Claims (1)
1. hydraulic prop dynamic detection system, it comprises test stand, and hydraulic system, pressure transducer, pressure display unit and computer system is characterized in that, described test stand is the test stand of a horizontal, and the effective length of test stand can be put into two hydraulic props to the top; Test stand one end is placed intact qualified hydraulic prop, and the other end is placed tested hydraulic prop; Described hydraulic system is to be provided with two feed flow pipelines on emulsion pump, and one is intact qualified hydraulic prop feed flow, and one is tested hydraulic prop feed flow, is connected with valve, pressure transducer and pressure display unit respectively on two feed flow pipelines; Wherein be provided with T-valve on the pipeline of intact qualified hydraulic prop feed flow, connecting a constant pressure valve by feed pipe again on the T-valve, constant pressure valve is connected with emulsion pump again; The signal wire of two pressure display units is connected with the computer data input port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205899552U CN201885858U (en) | 2010-10-23 | 2010-10-23 | Dynamic hydraulic prop detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205899552U CN201885858U (en) | 2010-10-23 | 2010-10-23 | Dynamic hydraulic prop detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201885858U true CN201885858U (en) | 2011-06-29 |
Family
ID=44183403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205899552U Expired - Fee Related CN201885858U (en) | 2010-10-23 | 2010-10-23 | Dynamic hydraulic prop detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201885858U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215407A (en) * | 2014-09-23 | 2014-12-17 | 中国矿业大学 | Downhole sealing detection device for single hydraulic prop |
| CN104704337A (en) * | 2012-10-05 | 2015-06-10 | 伊顿公司 | Automatic oil spill detection system |
-
2010
- 2010-10-23 CN CN2010205899552U patent/CN201885858U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104704337A (en) * | 2012-10-05 | 2015-06-10 | 伊顿公司 | Automatic oil spill detection system |
| CN104215407A (en) * | 2014-09-23 | 2014-12-17 | 中国矿业大学 | Downhole sealing detection device for single hydraulic prop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20111023 |