Non-return valve for a tubular consolidation element
a technology of tubular consolidation and non-return valve, which is applied in the direction of safety valves, check valves, functional valve types, etc., can solve the problems of reducing the mechanical performance of the tube, the risk of obstruction of the radial holes and the interior of the tubular element, and the preliminary machining operations to be performed on the tubular profile are notable and expensive in time, so as to achieve the effect of strength and ease of fitting, and resilience and flexibility of the elastomer
Inactive Publication Date: 2013-09-19
ELAS GEOTECNICA
View PDF2 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The patent describes a technique for soil consolidation called "consolidation injections". This involves drilling holes in the soil and inserting tubular elements into them, which are then filled with a fluid material to stiffen the soil and make it stronger. The patent also describes a special valve that helps to prevent the material from coming back out of the tubular elements. The patent also suggests using a structural body made of metal, with an elastomer material layered on top. This combines the benefits of both materials, making it stronger and easier to install.
Problems solved by technology
This solution of the prior art has various disadvantages, however; in the first place, there is a decline in the mechanical performance of the tube the lateral surface of which is weakened in the region of each groove or seat for the rubber ring; in the second place, the preliminary machining operations to be performed on the tubular profile are notable and expensive in terms of time since it is necessary to provide for the drilling and for the removal of material in the region of each group of holes.
Another disadvantage is the need to provide two rigid annular elements on the exterior of the tube above and below the rubber ring; these annular elements are glued to the tube radially and prevent movement of the ring in the longitudinal direction, preventing the holes formed radially in the walls of the tubular element being exposed during the introduction of the tubular element into the drill hole in the soil, with the risk of obstruction of the radial holes and the interior of the tubular element, prejudicing the use of the tubular element and the functional capacity of the valves downstream.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0030]With reference to FIGS. 1 to 4, a non-return valve 1 according to the present invention comprises a valve layer or portion 4 made of elastomer material which is generally coupled with or in some cases even incorporates a structural body 2 that is preferably made of metal, although the use of materials of various types including metal alloys, plastics materials, composite materials and the like is not excluded. The structural body 2 is, in any case, preferably deformable from a flat or substantially flat configuration as shown in the drawing so as to be bent to form a type of “collar” to be wrapped around and tightened onto a tubular element, as will become clearer from the following part of the present description. Naturally, the structural body 2 may also be pre-formed in a bent or partially bent shape which can nevertheless be wrapped around and tightened further onto the lateral surface of a tubular consolidation element.
[0031]The use of rubber or, more generally, of a ther...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A non-return valve fitted on a tubular element for use for the reinforcement and consolidation of soil, for example, in an excavation. The non-return valve includes a portion of elastomer material which has a nick and is connected to a structural body tightened onto the tubular element. The structural body can be connected rigidly to the portion of elastomer material or may be at least partially incorporated therein. The body has a central portion with a window within which the nick is arranged, and the edges of the nick open out and function as a non-return valve under the action of a fluid under pressure injected into the interior of the tubular element and emerging from radial holes in the vicinity of the nick.
Description
[0001]The present invention relates to the field of non-return valves for tubular consolidation elements.[0002]It is known to use tubular consolidation elements in the consolidation of soils and the like, for example, of an excavation wall or of a mass of soil which may be, for example, a tunnel face or roof or a mine gallery or any underground or exposed mass of soil. Non-return valves are provided in tubular consolidation elements of this type for the injection of consolidating liquids such as cementitious or chemical mixtures.[0003]So-called “consolidation injections” represent one of the best solutions in soil consolidation. This technique involves the formation of a series of drill holes in the ground or soil undergoing consolidation, into which corresponding elongate tubular elements are inserted. Each of these tubular elements, which may also have reinforcing functions, is hollow and has one or more holes in its lateral surface. A consolidation material in the fluid state, ge...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F16K15/14
CPCF16K15/147F16K15/142Y10T137/0491Y10T137/7879
InventorBONOMI, CRISTIANO
OwnerELAS GEOTECNICA