CN201495525U - Pressure reducing valve for impermeable layer of geomembrane - Google Patents
Pressure reducing valve for impermeable layer of geomembrane Download PDFInfo
- Publication number
- CN201495525U CN201495525U CN2009202030491U CN200920203049U CN201495525U CN 201495525 U CN201495525 U CN 201495525U CN 2009202030491 U CN2009202030491 U CN 2009202030491U CN 200920203049 U CN200920203049 U CN 200920203049U CN 201495525 U CN201495525 U CN 201495525U
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- valve
- geomembrane
- valve body
- loam cake
- upper cover
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Abstract
The utility model discloses a pressure reducing valve for an impermeable layer of a geomembrane, which comprises a valve body and a valve seat, wherein the valve body is formed by connecting a valve head part with a valve lengthening part, and connecting the valve lengthening part with a valve tail part; the valve head part consists of an upper cover, a balance weight, a filter layer, a sand prevention net and an opening adjusting slide-bar bolt, wherein the balance weight is fixedly connected with the upper cover; the filter layer is fixed at the upper end of the valve head part; the sand prevention net is arranged around the upper cover; the upper cover is connected with a flange at the upper end of the valve head part by the opening adjusting slide-bar bolt; under the pressure of underground water, the upper cover can slide freely up and down along the opening adjusting slide-bar bolt to adjust the opening and the closing of the upper cover; the valve body is anchored with the valve seat through a bottom flange at the valve tail part; and the geomembrane of the valve body is bonded with geomembrane adhesive laid on a water leakage layer. The pressure reducing valve has simple structure and flexible action, can guarantee the anti-seepage work of the geomembrane to be safely implemented, is widely used in geomembrane seepage prevention works of reservoirs, river channels, storage dams and the like, and is applicable to various geomembrane seepage prevention works.
Description
Technical field
The utility model relates to a kind of reducing valve, especially relates to being arranged on reservoir, river course, dyke engineering, and the gene basis seepage can not retaining, and when adopting geomembrane to make impervious barrier, a kind of geomembrane anti-seepage layer reducing valve that must on geomembrane, be provided with.
Background technology
When building water storage projects such as reservoir, river course, dyke; normal gene basis seepage must be laid the novel impervious material of one deck at bottom of the reservior, river gross area, and the geomembrane of the about 0.5mm of a kind of thickness is made impervious barrier; do heavily protection of lid with thick about 0.5m original place soil again, anti-seepage effect is fine.But when Dang He, storehouse periphery underground water exceeds reservoir level, because pressure reduction produces one to geomembrane jacking pressure under film, surpass when cover heavy soil weight when pressure increases, very thin geomembrane causes seepage control project to fail promptly by bursting, sees Fig. 3, Fig. 4 and Fig. 5.The method of preventing and treating in the past is that 1. increase is pressed in the thickness of geomembrane loam cake heavy soil, promptly gains in weight.2. every interval 30m left and right sides perforate on geomembrane (the about 20cm of diameter) places aperture blinding again with " mud cake " of the clay work of water, and when pressure is big, the geomembrane bottom pressure will back down " mud cake " and carry out drainage exhaust, and after pressure reduced, " mud cake " fell after rise.More than two kinds of methods the former increase construction costs and difficulty of construction, the latter is because " mud cake " displacement or be flushed away when draining gas probably causes artificial leak paths, therefore above two kinds of methods are all unreasonable, can not guarantee the engineering safety operation.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of can effectively prevent water level in the high outbound of reservoir area, river periphery groundwater table time the, aqueous vapor compression failure geomembrane, guarantees the geomembrane anti-seepage layer reducing valve that carries out flexible drainage exhaust on the geomembrane that is fixed on of engineering safety operation.
The technical scheme that adopts is:
The geomembrane anti-seepage layer reducing valve comprises valve body and valve seat.Described valve body is the tubular valve body, and valve body is made up of valve stem, valve spreading portion and valve afterbody, and valve stem lower end and valve spreading portion fixedly connected by the head end flange upper end, fixedlys connected the formation valve body by the spreading flange on valve spreading subordinate end and the valve afterbody.The valve stem is made up of loam cake, counterweight, filtering layer, sand control screens and adjusting aperture slide bar bolt, the fixedly connected loam cake of counterweight, filtering layer is fixed on valve stem upper end, be provided with sand control screens around the loam cake, sand control screens one end connects loam cake, the other end connects the flange upper end of valve stem, and loam cake is connected with valve stem flange by regulating aperture slide bar bolt, and loam cake can slide along regulating aperture slide bar bolt easy on and off.Folder is established the geomembrane of the same material of a circle and bottom of the reservior, river lay between afterbody flange in the bottom group.Valve body is fixedlyed connected with valve seat by afterbody flange in the bottom group screw rod, and geomembrane on the valve body and the geomembrane that is laid in the bottom of the reservior, river are adhesively fixed with adhesive.
Above-mentioned valve seat is the non-fine concrete valve seat.
Above-mentioned filtering layer is a long filament engineering non-weaving cloth filtering layer.
Be full of coarse gravel in the above-mentioned valve body.
Above-mentioned counterweight is according to the steel counterweight of facing Jie's starting pressure, disposing as calculated.
The utility model simple structure, flexible movements can be guaranteed the operation of geomembrane anti-seepage engineering safety.The parameter designing that this reducing valve can provide according to critical starting pressure, valve body height, diameter can be carried out seriation in factory and be produced in batches, is applied in widely on the geomembrane anti-seepage engineerings such as reservoir, river course, retaining dyke.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the first enlarged drawing of valve of the present utility model.
Fig. 3 is that the reservoir area can not the retaining schematic diagram because of the sand gravel foundation seepage.
Fig. 4 covers one deck geomembrane anti-seepage layer schematic diagram at the bottom of the reservoir.
Fig. 5 be reservoir area periphery groundwater table when being higher than reservoir level geomembrane by the bursting schematic diagram.
Fig. 6 is provided with reducing valve can make pressure pass through reducing valve to discharge schematic diagram in order on the geomembrane.
Fig. 7 is that reservoir level is higher than peripheral groundwater table reducing valve and closes schematic diagram automatically.
The specific embodiment
The geomembrane anti-seepage layer reducing valve comprises valve body and valve seat.Described valve body is the tubular valve body, valve body is made up of valve stem 7, valve spreading portion 9 and valve afterbody 11, fixedlying connected by head end flange 8 with valve spreading portion 9 upper ends in valve stem 7 lower ends, fixedlys connected by spreading flange 10 with valve afterbody 11 upper ends in valve spreading portion 9 lower ends, constitutes valve body.The valve stem is by loam cake 1, counterweight 2, filtering layer 3, sand control screens 5 and adjusting aperture slide bar bolt 4 are formed, counterweight 2 fixedly connected loam cakes 1, filtering layer 3 is a long filament engineering non-weaving cloth filtering layer, filtering layer 3 is fixed on valve stem 7 tops, be provided with sand control screens 5 around the loam cake 1, sand control screens 5 one ends connect loam cake 1, the other end connects flange 6 upper ends of valve stem 7, loam cake 1 is connected with the upper flanges 6 of valve stem 7 by regulating aperture slide bar bolt 4, loam cake 1 can slide along regulating aperture slide bar bolt 4 easy on and off when groundwater table and reservoir level have pressure reduction, regulates the aperture of loam cake 1 or closes.Valve seat 13 is the non-fine concrete valve seat, valve body is full of coarse gravel 18 by the flange in the bottom group 12 and valve seat 13 anchorings of valve afterbody 11 in the valve body, valve body geomembrane 14 and the geomembrane 16 that is laid on the layer 17 that leaks, be adhesively fixed with adhesive 15, constitute the geomembrane anti-seepage layer reducing valve.
Operating principle:
Reducing valve is laid in to carry out by the distance of setting and cover reservoir and leak on the geomembrane 16 on layers 17, make lid with thick about 0.5m original place soil again and weigh 19, when if reservoir periphery groundwater table is higher than reservoir level, coarse gravel 18 and filtering layer 3 back down loam cake 1 discharging in the non-fine concrete hole of its groundwater pressure by valve seat 13, the valve body.When pressure decay discharging stops, loam cake 1 falls after rise to valve body at pressurized under the water column effect closes, and sees Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7.
Claims (5)
1. geomembrane anti-seepage layer reducing valve, comprise valve body and valve seat, described valve body is the tubular valve body, valve body is by valve stem (7), valve spreading portion (9) and valve afterbody (11) are formed, it is characterized in that valve stem (7) lower end and valve spreading portion (9) upper end fixedlys connected by head end flange (8), fixedly connected by spreading flange (10) with valve afterbody (11) upper end in valve spreading portion (9) lower end, constitute valve body, the valve stem is by loam cake (1), counterweight (2), filtering layer (3), sand control screens (5) and adjusting aperture slide bar bolt (4) are formed, the fixedly connected loam cake of counterweight (2) (1), filtering layer (3) is fixed on valve stem (7) upper end, loam cake (1) is provided with sand control screens (5) all around, sand control screens (5) one ends connect loam cake (1), the other end connects the upper flanges (6) of valve stem (7), loam cake (1) is connected with the upper flanges (6) of valve stem (7) by regulating aperture slide bar bolt (4), loam cake (1) can slide along regulating aperture slide bar bolt (4) easy on and off, valve body is by the flange in the bottom group (12) and valve seat (13) anchor connection of valve afterbody (11), valve body geomembrane (14) and the geomembrane (16) that is laid on the layer (17) that leaks, fixing with adhesive (15).
2. geomembrane anti-seepage layer reducing valve according to claim 1 is characterized in that described valve seat (13) is the non-fine concrete valve seat.
3. geomembrane anti-seepage layer reducing valve according to claim 1 is characterized in that described filtering layer (3) is a long filament engineering non-weaving cloth filtering layer.
4. geomembrane anti-seepage layer reducing valve according to claim 1 is characterized in that being full of in the described valve body coarse gravel (18).
5. geomembrane anti-seepage layer reducing valve according to claim 1 is characterized in that described counterweight (2) is according to the steel counterweight of facing Jie's starting pressure, disposing as calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202030491U CN201495525U (en) | 2009-09-04 | 2009-09-04 | Pressure reducing valve for impermeable layer of geomembrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202030491U CN201495525U (en) | 2009-09-04 | 2009-09-04 | Pressure reducing valve for impermeable layer of geomembrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201495525U true CN201495525U (en) | 2010-06-02 |
Family
ID=42438733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202030491U Expired - Lifetime CN201495525U (en) | 2009-09-04 | 2009-09-04 | Pressure reducing valve for impermeable layer of geomembrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201495525U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090353A (en) * | 2016-06-22 | 2016-11-09 | 北京良乡蓝鑫水利工程设计有限公司 | Fish mouth type exhaust outlet device and be provided with the water body seepage control system of this device |
| CN109058498A (en) * | 2018-09-28 | 2018-12-21 | 庄伟龙 | It is a kind of to use the agricultural valve of pressure control waterstop antiseepage throttling |
-
2009
- 2009-09-04 CN CN2009202030491U patent/CN201495525U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090353A (en) * | 2016-06-22 | 2016-11-09 | 北京良乡蓝鑫水利工程设计有限公司 | Fish mouth type exhaust outlet device and be provided with the water body seepage control system of this device |
| CN109058498A (en) * | 2018-09-28 | 2018-12-21 | 庄伟龙 | It is a kind of to use the agricultural valve of pressure control waterstop antiseepage throttling |
| CN109058498B (en) * | 2018-09-28 | 2019-09-17 | 远大阀门集团有限公司 | It is a kind of to use the agricultural valve of pressure control waterstop antiseepage throttling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100602 Effective date of abandoning: 20090904 |