CN1048923A - Hydraulic prop pressure detection method and device - Google Patents
Hydraulic prop pressure detection method and device Download PDFInfo
- Publication number
- CN1048923A CN1048923A CN 90104796 CN90104796A CN1048923A CN 1048923 A CN1048923 A CN 1048923A CN 90104796 CN90104796 CN 90104796 CN 90104796 A CN90104796 A CN 90104796A CN 1048923 A CN1048923 A CN 1048923A
- Authority
- CN
- China
- Prior art keywords
- pressure
- housing
- valve
- hole
- detecting device
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 38
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 238000010079 rubber tapping Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 208000002925 dental caries Diseases 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 2
- 229920005372 Plexiglas® Polymers 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 3
- 239000000839 emulsion Substances 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Landscapes
- Measuring Fluid Pressure (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention relates to a kind of pressure detection method and device that is applicable to hydraulic prop under the coal mine, it mainly utilizes device hand ram pump in the housing, utilize ram pump to produce high pressure and back down tested pillar feed liquor valve, according to equal pressure principle, can on the pressure-display device of pick-up unit, record a column pressure.The present invention has fundamentally eliminated the pillar drainage step-down phenomenon that occurs when itinerant monitor system props up column pressure, and compact conformation of the present invention, and dependable performance is lightly portable, easy to operate, shakes handle one to secondary and can finish the pillar pressure detection one time.
Description
The present invention relates to a kind of pressure detection method and device, a kind of pressure detection method and device that is applicable to hydraulic prop under the coal mine of more specifically saying so.
Because the feasible pressure tester that is not easy on pillar, install and fix of colliery subsurface environment and condition of work, therefore, the portable movable pressure tester of normal use, at present, the pressure-detecting device of hydraulic prop commonly used under the coal mine: be to utilize the bolt thimble to back down the interior pressure that pillar feed liquor valve records pillar.This pressure tester proves through application for many years: each pressure measurement all can cause the hydraulic prop chamber pressure to descend.Its reason is: there are the joint clearance that can not eliminate in tested pillar and pressure tester, and this gap and pillar inner chamber pressure reduction are up to 0～400kg/cm
2, after thimble backed down pillar feed liquor valve, pillar inner chamber high pressure liquid just leaked in the gap and instrument of joint of pillar and instrument, causes the leakage step-down, and a step-down of every survey reaches 10～15kg/cm
2Repeatedly going the rounds in the detection, pillar is step-down repeatedly, has a strong impact on the operate as normal of pillar, even roof fall accident occurs.In addition, to be screwed into during the operation of bolt thimble-type pressure tester and back-out, very inconvenient, and also hard.And the thimble damage that is easy to fracture influences operate as normal in the use.
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art part and design a kind of hydraulic prop pressure detection method and device, fundamentally eliminated the leakage step-down of pillar when tested, easy and simple to handle, good seal performance.
Purpose of the present invention can realize by following manner: a kind of pressure-detecting device of hydraulic prop, housing is arranged on it, in hand piston pump is housed, the emulsion that described ram pump is used is identical with the emulsion of tested pillar, by handle, slider-crank mechanism actuation plunger pump, make emulsion fill with the gap, feed liquor valve junction of pick-up unit and tested pillar, and the high pressure that utilizes ram pump to produce backs down the feed liquor valve on the tested pillar, according to equal pressure principle, can from pressure-display device read the interior pressure of pillar.
A kind of pressure detection method of hydraulic prop is to utilize pick-up unit to produce high pressure, backs down with the feed liquor valve of fluid power with tested pillar, thereby records pressure in the pillar from the pressure-display device of pick-up unit.
The present invention has following advantage:
1, adopts ram pump to produce high pressure liquid, at first be full of the assemblage gap of pressure tester and pillar joint, and then back down the feed liquor valve of tested pillar.So just fundamentally eliminated the drainage step-down phenomenon in the touring testing process.
2, structure dress gathers, reliably, and is lightly portable.
3, easy and simple to handle laborsaving, handle shakes one and gets final product to secondary.
4, favorable sealing property.
Description of drawings:
Accompanying drawing 1 is the subjective figure of structure of the present invention.
Accompanying drawing 2 is B-B cut-open views of Fig. 1.
Accompanying drawing 3 is A-A cut-open views of Fig. 1.
Accompanying drawing 4 is structural front view of an alternative embodiment of the invention.
The invention will be further described with reference to the accompanying drawings:
With reference to accompanying drawing 1,2, shown in 3: a kind of pressure-detecting device of hydraulic prop, mainly by housing 1, pressure-display device 2, formation such as ram pump and rapid-acting coupling, have groove on the front end center pit of housing 1, O-ring seal is fixed in the groove, it matches with the feed liquor valve of tested pillar, its outside is fixed with rapid-acting coupling, described rapid-acting coupling is mainly by steel ball 12, sliding sleeve 13, back-moving spring 14 is formed, housing 1 front end has outer tube, have conical through-hole on it, steel ball 12 is stuck on the taper hole, and sliding sleeve 13 1 ends are pushed down steel ball 12, the other end is stuck on the shoulder of outer tube, settles back-moving spring 14 in the sliding sleeve 13.Settle ram pump on the hole in the rear end of housing 1, described ram pump mainly is made up of plunger 3, liquid sucting valve 6, tapping valve 7, drainage valve 11, and plunger 3 is placed in the hole, garden, housing 1 rear end, with end cap 8 sealings, form liquid storage cylinder 10 in it, be fixed with fluid injection retaining valve 9 on the end cap 8.Housing 1 middle part radially has hole, four gardens, difference fixation pressure display device 2, liquid sucting valve 6, tapping valve 7 and drainage valve 11, liquid sucting valve 6 is communicated with liquid storage cylinder 10, be communicated with discharge opeing liquid valve 7 inlets and plunger 3 front end cavitys at the bottom of its valve, the leakage fluid dram of tapping valve 7 is communicated with pressure-display device 2 bottoms, pressure-display device 2 bottoms and drainage valve 11 all are communicated with housing 1 front end endoporus vestibule, there is slideway plunger 3 rear ends, slide block on the crank block 4 is stuck on the slideway, its both sides are installed on the radial direction through hole of housing 1, and handle 5 is fixed on the two ends of crank block 4.Described pressure-display device 2 can be used tensimeter, also available piezoelectric sensor and liquid crystal display.
Shown in accompanying drawing 4: Fig. 4 has showed the structural representation of an alternative embodiment of the invention.A kind of hydraulic prop pressure-detecting device, mainly by housing 15, ram pump, rapid-acting coupling, crank block 4, handle 5, pressure-display device 2 compositions such as grade, housing 15 is the thin-walled tubulose, have groove on its hole, front end garden, O-ring seal is fixed in the groove, it matches with the feed liquor valve of tested pillar, its outside is fixed with rapid-acting coupling, described rapid-acting coupling mainly is made up of card cutting ferrule 22 and snap ring 23, the cutting ferrule 22 and the housing 15 of garden tubulose fuse, have logical groove on it, snap ring 23 is stuck on the groove, and can slide along groove, described ram pump is placed in the housing 15, described ram pump is mainly by plunger 16, cylinder body 17, draining valve 18, liquid sucting valve 6, tapping valve 7, compositions such as drainage valve, tapping valve 7 is fixed in the center pit of draining valve 18 of garden cylindricality, be fixed in the hole of housing 15 then together, the hole internal fixation of the housing 15 in its left side has garden column cylinder body 17, center line two ends along cylinder body 17 have obstructed hole, garden, plunger 16 is equipped with in the hole, garden in the left side, slide block on the crank block 4 is stuck in the groove on the plunger 15, crank block 4 is placed on the radially garden through hole of cylinder body 17, handle 5 is fixed on the two ends of crank slip 4, pressure-display device 2 is equipped with in the hole in the garden, right side, have annular groove on the cylinder of cylinder body 17, the space that itself and housing constitute claims liquid storage cylinder 21, the front end edge of cylinder body 17 radially has the garden through hole, fixing liquid sucting valve 6 on it, valve port communicates with liquid storage cylinder 21, cylinder body 17 middle parts radially have hole, two gardens, fixedly drainage valve 11 and liquid injecting mouth 19 respectively, the middle part of drainage valve 11 and liquid injecting mouth are communicated with liquid storage cylinder 21, be communicated with pressure-display device 2 bottoms at the bottom of the valve of drainage valve 19, pressure-display device 2 bottoms are communicated with housing 15 front end endoporus cavitys, the rear end of cylinder body 17 has groove, be communicated with liquid storage cylinder 21, be fixed with plexiglass tent 20 on it, be used for observing in the liquid storage cylinder 21 liquid what.Described pressure-display device 2 can be a tensimeter, also can be piezoelectric sensor and liquid crystal display.
During use, the fluid injection gun of using with the down-hole pillar is filled with emulsion in liquid storage cylinder 10 or 21 by liquid-filling valve 9 or liquid injecting mouth 19 earlier, fill once available tens of times, hand is by rapid-acting coupling then, the feed liquor valve of pressure-detecting device and tested pillar is linked together, control crank 5 again, toward rotating counterclockwise, liquid enter plunger 3 by liquid sucting valve 6 or by front end in the liquid storage cylinder 10 or 21, thereafter, press under the handle, liquid enters the joint of pressure-display device 2 bottoms or tested pillar and pick-up unit by tapping valve 7, at this moment handle 5 is pressed under continuing, promote plunger 3 or 16 reaches, pressure-display device 2 pressure raise rapidly, one when pick-up unit pressure is identical or slightly high with pressure in the pillar, pillar feed liquor opening of valves, the pillar inner chamber communicates with pick-up unit liquid road, at this moment, the pressure-display device reading is in the pillar and presses, even down press handle again, small amount of liquid overflows in pillar in the pick-up unit, but, pillar is located at the top, down-hole because propping up, between base plate is upright, the top, base plate rigidity is less, is pressed with obvious rising in the pillar so overflow not conform to make to the pillar small amount of liquid.
Claims (10)
1, a kind of pressure-detecting device of hydraulic prop, include pressure-display device 2, it is characterized in that: also include housing 1, ram pump, rapid-acting coupling, crank block 4, handle 5, the front end center pit of housing 1 matches with tested pillar feed liquor valve, the fixedly rapid-acting coupling in its outside, described ram pump is placed in the housing 1, the crank block 4 that is fixed on the hole, radially garden of housing 1 is coupled, and handle 5 is fixed on the two ends of bent axle 4, and housing 1 rear end is with end cap 8 sealings, be fixed with fluid injection retaining valve 9 on the end cap 8, fixation pressure display device 2 on the housing 1, its bottom is connected with the leakage fluid dram of housing 1 front end center pit and described ram pump.
2, pressure-detecting device according to claim 1, it is characterized in that: described ram pump is mainly by plunger 3, liquid sucting valve 6, tapping valve 7, drainage valve 11 is formed, plunger 3 is placed in the hole, garden, housing 1 rear end, housing 1 middle part radially has hole, three gardens, be fixed with liquid sucting valve 6 on it respectively, tapping valve 7 and drainage valve 11, liquid sucting valve 6 is communicated with liquid storage cylinder 10, be communicated with plunger 3 front end cavitys at the bottom of its valve, be communicated with tapping valve 7 inlets, the leakage fluid dram of tapping valve 7 is communicated with tensimeter 2, drainage valve 11 was communicated with 2 ends of pressure-display device, and plunger 3 rear ends have slideway to link to each other with crank block 4.
3, pressure-detecting device according to claim 1, it is characterized in that: described rapid-acting coupling mainly is made up of steel ball 12, sliding sleeve 13, back-moving spring 14, have conical through-hole on the housing 1 front end outer tube, steel ball 12 is stuck on the taper hole, sliding sleeve 13 1 ends are pushed down steel ball 12, the other end is stuck on the shoulder of outer tube, settles back-moving spring 14 in the sliding sleeve 13.
4, pressure-detecting device according to claim 1 is characterized in that: described housing 1 front end garden has groove in the hole, is fixed with the close circle of penetrating on it.
5, a kind of pressure-detecting device of hydraulic prop, include pressure-display device 2, it is characterized in that: comprise that also housing 15, ram pump, rapid-acting coupling, crank block 4, handle 5, housing 15 are the thin-walled tubulose, its front end endoporus matches with tested pillar feed liquor valve, its fixedly rapid-acting coupling of outside, described ram pump is placed in the housing 15, crank block 4 is coupled, its two ends fixed handle 5, pressure-display device 2 is fixed on the ram pump, and its bottom is communicated with housing 15 front end endoporus.
6, pressure-detecting device according to claim 5, it is characterized in that: described ram pump is mainly by plunger 16, cylinder body 17, draining valve 18, liquid sucting valve 6, tapping valve 7, drainage valve 11 is formed, tapping valve 7 is fixed in the center pit of draining valve 18, be fixed on then in housing 15 holes, the hole internal fixation of the housing 15 in its left side has garden column cylinder body 17, center line two ends along cylinder body 17 have the hole, garden that does not communicate, plunger 16 is equipped with in the hole, garden in the left side, slide block on the crank block 4 is stuck on the groove of plunger 16, have annular groove on the cylinder of cylinder body 17, itself and housing 15 constitute liquid storage cylinder 21, the front end edge of cylinder body 17 radially has the garden through hole, fixing liquid sucting valve 6 on it, cylinder body 17 middle parts radially have hole, two gardens, and circle is decided drainage valve 11 and liquid injecting mouth 19 respectively, and drainage valve 11 middle parts and liquid injecting mouth 19 communicate with liquid storage cylinder 21, be communicated with cylinder body 17 right-hand member holes at the bottom of drainage valve 19 valves, pressure-display device is fixed on the right-hand member hole of cylinder body 17.
7, pressure-detecting device according to claim 5 is characterized in that: described rapid-acting coupling mainly is made up of cutting ferrule 22 and snap ring 23, and garden tubulose cutting ferrule 22 fuses with housing 15, has logical groove on it, and snap ring 23 is stuck on the groove.
8, pressure-detecting device according to claim 6 is characterized in that: the rear end of described cylinder body 17 has groove, and it is communicated with liquid storage cylinder 21, is fixed with plexiglass tent 20 on it.
9, pressure-detecting device according to claim 5 is characterized in that: described housing 15 front end garden has groove on the hole, is fixed with O-ring seal on it.
10, a kind of hydraulic prop pressure detection method, it is characterized in that: utilize pressure-detecting device to produce high pressure, when pressure-detecting device is identical or slightly high with pressure in the tested pillar, back down the feed liquor valve of tested pillar with fluid power, pressure-detecting device communicates with the pillar inner chamber, presses thereby record in the pillar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104796 CN1030589C (en) | 1990-07-19 | 1990-07-19 | Detecting method and apparatus for single hydraulic pillar pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104796 CN1030589C (en) | 1990-07-19 | 1990-07-19 | Detecting method and apparatus for single hydraulic pillar pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1048923A true CN1048923A (en) | 1991-01-30 |
| CN1030589C CN1030589C (en) | 1995-12-27 |
Family
ID=4878748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90104796 Expired - Fee Related CN1030589C (en) | 1990-07-19 | 1990-07-19 | Detecting method and apparatus for single hydraulic pillar pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030589C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806544A (en) * | 2016-05-20 | 2016-07-27 | 中国矿业大学 | Mining random high-voltage lossless optical fiber Bragg grating single prop pressure sensor system |
-
1990
- 1990-07-19 CN CN 90104796 patent/CN1030589C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806544A (en) * | 2016-05-20 | 2016-07-27 | 中国矿业大学 | Mining random high-voltage lossless optical fiber Bragg grating single prop pressure sensor system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1030589C (en) | 1995-12-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4339948A (en) | Well formation test-treat-test apparatus and method | |
| JPS60113064A (en) | Handheld type diesel engine injector tester | |
| CN1092141A (en) | Large volum pressure limiting valve | |
| CN1048923A (en) | Hydraulic prop pressure detection method and device | |
| DE69202118T2 (en) | Device for separating liquid samples under high pressure. | |
| CN219265802U (en) | Drilling fluid sampling device for petroleum and natural gas logging | |
| CN218646610U (en) | Vehicle body dent-resistant testing equipment | |
| CN2667156Y (en) | Eccentric water distributor and its detectable flow sealed measurement sealing section | |
| CN202531163U (en) | Single-probe sidewall contact device | |
| CN205638502U (en) | Floated hydraulic column | |
| SU1640398A1 (en) | Stand for examining stressed state of loose soil samples | |
| CN2589946Y (en) | Multiple flow rate test well | |
| CN208331767U (en) | A kind of colliery scene coal sample gas pot | |
| US4866994A (en) | Refrigeration system oil measurement and sampling device | |
| CN2714529Y (en) | Multipurpose vertical hydraulic jack with pressure gauge | |
| CN218411642U (en) | Compression packer packing element performance detection device | |
| DE3728555A1 (en) | Piston accumulator for hydraulic oil | |
| CN2263196Y (en) | Freeze-proofing theft-proof pressure testing device for oil well | |
| CN201568062U (en) | Novel double-telescopic-single-body hydraulic prop | |
| CN211573552U (en) | Coal mine supporting equipment | |
| CN2171856Y (en) | Pressure boost valve controlled base intrusion instrument | |
| CN215768103U (en) | Novel coal bed gas pressure measurement coal sample jar | |
| JPS62135748A (en) | Liquid pressure type stationary piston sampler | |
| CN117823195A (en) | Three-purpose valve with pressure display function for mining wireless type | |
| CN210714639U (en) | Double-tube separate injection upper-layer water absorption profile measuring preset tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |