GB2102859A - Expendable closure plug - Google Patents
Expendable closure plug Download PDFInfo
- Publication number
- GB2102859A GB2102859A GB08205633A GB8205633A GB2102859A GB 2102859 A GB2102859 A GB 2102859A GB 08205633 A GB08205633 A GB 08205633A GB 8205633 A GB8205633 A GB 8205633A GB 2102859 A GB2102859 A GB 2102859A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plug
- closure plug
- closure
- expendable
- rock
- 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.)
- Withdrawn
Links
- 239000011435 rock Substances 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 5
- 238000003780 insertion Methods 0.000 claims abstract description 5
- 230000037431 insertion Effects 0.000 claims abstract description 5
- 239000012764 mineral filler Substances 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 16
- 238000010276 construction Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000005065 mining Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/10—Preparation of the ground
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Pens And Brushes (AREA)
- Pipe Accessories (AREA)
Abstract
An expendable closure plug (1) for insertion in apertures in rock, to assist in the introduction of chemical or mineral fillers, comprises an elastically-deformable body (4) having a central bore reinforced by a metal tube (2) and resilient gripper members (3), three or more segmental lip- shaped elements (5) being formed at the forward end, so that the bore of the plug and therefore the aperture are normally closed, the lip-shaped elements (5) opening in use to allow the filler to pass through the bore into the aperture in the rock. <IMAGE>
Description
SPECIFICATION
Expendable closure plug
The invention relates to an expendable closure plug, for insertion into apertures in rock, of elastically-deformable material, with a central bore reinforced by a metal tube and resilient gripper members projecting beyond the external diameter.
Such closure plugs are employed to secure loose rock in mining and in mined tunnel construction, by stabilizing cracks in the rock by means of chemical or mineral fillers. An aperture for introducing these fillers into the rock is closed by a closure plug of the kind indicated. The plug serves on the one hand to receive in its screw thread the connecting line of the injection unit and on the other hand to prevent return flow from the aperture of the filler material, after this has been introduced.
Such fillter plugs are known from DE-AS 2633434 and DE-OS 2508646.
With the known plugs, it is a disadvantage that the elements for preventing return flow are expensive and are made so as not to be functionally reliable. DE-AS 2633434 discloses as a component for preventing return flow a movable ball in the internal bore of the reinforcing tube, which is urged against a valve seat during counter-flow. DE-OS 2508646 discloses the arrangement of two valve flaps. With both proposals, the arrangement of additional components made with different materials for fulfilling the function of preventing return flow is disadvantageous.
The invention is based upon the purpose of providing a closure plug which ensures reliable operation with the fewest possible parts, operates satisfactorily and can be made economically.
This purpose is solved according to the invention in that three or more segmental lipshaped elements opening in the direction of filling are provided at the forward end of the central bore. In a particular construction, the lip-shaped elements are formed as parts of the plug body of elastically-deformable material.
The advantages obtained with the invention reside particularly in that a closure plug with reliable operation in preventing return flow is provided, which is made in one piece and therefore requires no additional mounting or preparation in use. Furthermore, this construction has the advantage that different materials need not be combined and malfunctioning cannot arise from erroneous assembly. Manufacture of the plug according to the invention can be carried out in a simple manner, in which the steel components have rubber or plastics material moulded round them and then the lip-shaped elements are made by cutting.
An embodiment of the invention is illustrated in the accompanying drawing and is described in connection with this below:
Fig. 1 shows a closure plug in longitudinal section;
Fig. 2 shows the closure plug according to Fig.
1 in end elevational view.
The closure plug 1 is formed upon a metal tube 2, which is provided with a connecting thread 7 at the filling end and on which gripper members 3 are mounted. This basic unit of the metal tube 2 and the gripper members 3 is moulded in known manner into an elastically-deformable material, which constitutes the plug body 4. One or more radial sealing rings 6 are provided on the plug body 4, which effect a seal against the wall of the aperture. During the moulding process, this bore closure is severed with a suitable separating cutter, so that three or more lip-shaped elements 5 are produced, which can then serve to prevent return flow, as they are closed in the normal state and open during the filling step.
1. An expendable closure plug for insertion into an aperture in rock, comprising a body of elastically-deformable material having a central bore reinforced by a metal tube and resilient gripper members projecting beyond the external diameter, wherein three or more segmental lipshaped elements opening in the direction of filling are provided at the forward end of the central bore.
2. An expendable plug according to claim 1, wherein the lip-shaped elements are formed as parts of the plug body.
3. An expendable closure plug according to claim 1, substantially as described with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (3)
1. An expendable closure plug for insertion into an aperture in rock, comprising a body of elastically-deformable material having a central bore reinforced by a metal tube and resilient gripper members projecting beyond the external diameter, wherein three or more segmental lipshaped elements opening in the direction of filling are provided at the forward end of the central bore.
2. An expendable plug according to claim 1, wherein the lip-shaped elements are formed as parts of the plug body.
3. An expendable closure plug according to claim 1, substantially as described with reference to the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19818121985 DE8121985U1 (en) | 1981-07-27 | 1981-07-27 | LOST PLUG |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2102859A true GB2102859A (en) | 1983-02-09 |
Family
ID=6729810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08205633A Withdrawn GB2102859A (en) | 1981-07-27 | 1982-02-25 | Expendable closure plug |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE893889A (en) |
| DE (1) | DE8121985U1 (en) |
| FR (1) | FR2510177A1 (en) |
| GB (1) | GB2102859A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0315124A1 (en) * | 1987-11-05 | 1989-05-10 | DIEHL GMBH & CO. | Plug for rock consolidation |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3228650C2 (en) * | 1982-07-31 | 1986-07-24 | Drespa, Gerd, 4600 Dortmund | Borehole closure with inflatable bellows |
| DE3325931C1 (en) * | 1983-07-19 | 1984-07-19 | Gerd 5810 Witten Drespa | Borehole seal for shallow and deep resinating |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE571874C (en) * | 1933-03-06 | Carlshuette Akt Ges Fuer Eisen | Rubber lip valve | |
| US2191458A (en) * | 1940-02-27 | Valve | ||
| US2670757A (en) * | 1949-08-19 | 1954-03-02 | Delany Realty Corp | Combination check valve and union |
| FR1301646A (en) * | 1961-09-23 | 1962-08-17 | Rheinisches Metallwerk Gmbh | Anti-reflux device which can be fitted in liquid conduits, in particular in the shut-off device plug |
| FR1503224A (en) * | 1966-12-05 | 1967-11-24 | Trico Folberth Ltd | Valve, in particular for windscreen washer |
| US3572379A (en) * | 1969-02-19 | 1971-03-23 | Timken Co | Bearing vent construction and process of manufacturing the same |
| GB1354691A (en) * | 1970-02-12 | 1974-05-30 | Black M M | Fluid-operated valves |
| US3701560A (en) * | 1970-12-30 | 1972-10-31 | Arthur F Emmerson | Automotive vehicle body access and drain plug |
| GB1366717A (en) * | 1971-11-23 | 1974-09-11 | Techno Corp | Check valve |
| FR2208500A7 (en) * | 1972-11-17 | 1974-06-21 | Beru Werk Ruprecht Gmbh Co A | |
| FR2302412A1 (en) * | 1975-02-28 | 1976-09-24 | Bergwerksverband Gmbh | Expanding closure device - for boreholes, has wedge action seals |
| DE2600545A1 (en) * | 1976-01-08 | 1977-07-21 | Continental Gummi Werke Ag | Coalface infusion method and equipment - has removable plug on probe end with infusion bore with plug remaining after probe withdrawal to seal fluid in hole |
| DE2633434C2 (en) * | 1976-07-24 | 1981-04-30 | Diehl GmbH & Co, 8500 Nürnberg | Lost stopper |
-
1981
- 1981-07-27 DE DE19818121985 patent/DE8121985U1/en not_active Expired
-
1982
- 1982-02-25 GB GB08205633A patent/GB2102859A/en not_active Withdrawn
- 1982-07-20 BE BE0/208634A patent/BE893889A/en not_active IP Right Cessation
- 1982-07-27 FR FR8213116A patent/FR2510177A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0315124A1 (en) * | 1987-11-05 | 1989-05-10 | DIEHL GMBH & CO. | Plug for rock consolidation |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2510177A1 (en) | 1983-01-28 |
| DE8121985U1 (en) | 1981-11-26 |
| BE893889A (en) | 1983-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |