CN219033222U - Underwater grouting inflatable double plugging device - Google Patents
Underwater grouting inflatable double plugging device Download PDFInfo
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- CN219033222U CN219033222U CN202223055979.1U CN202223055979U CN219033222U CN 219033222 U CN219033222 U CN 219033222U CN 202223055979 U CN202223055979 U CN 202223055979U CN 219033222 U CN219033222 U CN 219033222U
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Abstract
The utility model provides an underwater grouting inflatable dual-plugging device which comprises a plugging area, wherein the plugging area is positioned between a steel pipe pile and a steel pipe sleeve, the plugging area comprises an active plugging component positioned at an upper layer and a passive plugging component positioned at a lower layer, and the active plugging component and the passive plugging component are fixedly connected with the inner wall of the steel pipe sleeve; the active plugging assembly comprises a plugging cavity with an opening, wherein the plugging cavity is formed by partially connecting a steel pipe sleeve, an inflation assembly is arranged in the plugging cavity, and the inflation assembly is filled in the plugging cavity after being inflated, so that the plugging cavity is isolated from the outside to form an upper plugging area; the passive plugging assembly comprises a plugging assembly, one end of the plugging assembly is connected with the inner wall of the steel sleeve, and the other end of the plugging assembly is clung to the outer wall of the steel pipe pile to form a lower plugging area. According to the utility model, double-layer blocking is utilized, so that the tightness of the bottom in grouting is ensured, and accidents such as slurry leakage and the like are avoided.
Description
Technical Field
The utility model relates to the technical field of grouting blocking and the like, in particular to an underwater grouting inflatable double blocking device.
Background
The grouting construction of the underwater environment is needed for the jacket foundation of the offshore wind power booster station due to the engineering structure, the grouting height of a single steel sleeve of the jacket foundation of the booster station is unequal from 25m to 40m, the jacket foundation is divided into an underwater grouting section and an on-water grouting section, and the grouting length of the underwater section is up to 35m at maximum.
The construction organization of marine grouting is difficult, with high costs, once take place grout material seepage or grout material and silt, sea water mixture, will probably lead to structural failure, economic loss, time limit for a project delay, major problems such as safety risk.
Because the annular space between the steel sleeve and the steel pipe pile is provided with seawater, and the space is narrow, the back cover dry construction cannot be adopted. Therefore, the grouting is performed by starting underwater grouting from the bottom of the annular space, water accumulated in the annular space is lifted upwards to be emptied, the grouting pressure is high, the technical difficulty of one-time grouting to the top is high, and the construction risk is high. Once slurry leakage occurs in grouting, huge loss is caused. The development of a grouting plugging technology which is convenient and quick to construct, reliable in leakage prevention, economical and reasonable is necessary.
Disclosure of Invention
The utility model aims to provide an underwater grouting inflatable double plugging device, which ensures that the bottom is firmly plugged through plugging for 2 times, particularly in inflation, seawater can be extruded out, thereby improving the operability of grouting and saving the cost.
The utility model is realized by the following technical scheme.
An underwater grouting inflatable double plugging device comprises,
the blocking area is positioned between the steel pipe pile and the steel pipe sleeve and comprises an active blocking component positioned at the upper layer and a passive blocking component positioned at the lower layer, and the active blocking component and the passive blocking component are fixedly connected with the inner wall of the steel pipe sleeve;
the active plugging assembly comprises a plugging cavity with an opening, wherein the plugging cavity is formed by partially connecting a steel pipe sleeve, an inflation assembly is arranged in the plugging cavity, and the inflation assembly is filled in the plugging cavity after being inflated, so that the plugging cavity is isolated from the outside to form an upper plugging area;
the passive plugging assembly comprises a plugging assembly, and the plugging assembly is respectively connected with the inner wall of the steel pipe sleeve and the outer wall of the steel pipe pile to form a lower plugging area.
In the technical scheme, double-layer plugging is selected, so that the slurry leakage risk can be reduced by double plugging in terms of structure and plugging effect, and when unexpected slurry leakage occurs in the upper-layer active plugging device, the lower-layer plugging device can also play a role in stopping slurry.
The scheme mainly plays a role of stopping slurry, namely an upper active plugging device is also a device with plugging function. Only when the upper active plugging device leaks slurry, the lower plugging device can play a role, so that the lower plugging device is a standby plugging device.
In the technical scheme, the plugging cavity of the cavity is selected for use, so that the plugging device is convenient for construction of a jacket foundation by a post pile method, and if a solid ring is adopted, the pile tip is easy to stab the solid ring when the steel pipe pile is inserted downwards from the top of the steel sleeve.
Compared with the single traditional plugging device adopted in the offshore wind power industry, the double plugging device has the advantages of easiness in installation and operation, good slurry stopping effect, high reliability, high cost performance and the like, and has obvious advantages.
Further, the upper layer plugging area and the lower layer plugging area form a transition space, and the width of the transition space is 100-300mm.
In the technical scheme, a space of 100-300mm is formed between the upper plugging component and the lower plugging component, so that a rubber ring of the lower plugging device can be conveniently installed, and a space is reserved for inflation expansion of the upper plugging device. The height of the grouting body is reduced when the space is too large, so that the structural bearing capacity is affected, and the rubber ring is inconvenient to install when the space is too small.
Further, a grouting hole is formed above the upper layer plugging area. In this scheme, because the work of grout just goes on in shutoff region top, so the upper shutoff region that is nearer apart from the grout sets up than wide, and then its pressure that can bear is bigger, and sealing region is better.
Further, the shutoff chamber includes upper shield and lower shield, upper shield and lower shield are annular structure, annular structure's width is less than interval between steel-pipe pile and the steel pipe cover.
In this scheme, steel sleeve pipe and steel-pipe pile are cylindrical structure, and annular steel sheet can be fixed with steel sleeve pipe inner wall full weld, does benefit to the protection gasbag. The jacket is installed in the engineering earlier, and the steel-pipe pile is the mounting structure behind, and the annular space that its formed is narrow and small, can't carry out the welding work of protection shield and steel-pipe pile.
Further, the inflation assembly comprises an air bag which is contracted in the range of the upper protection plate and the lower protection plate and is close to the inner wall of the steel sleeve in a normal state.
In this technical scheme, only the gas filled mouth of gasbag is located steel sleeve inner wall and connects, and then under the gasbag normal state, and occupation space is little, direct assembly can, and the installation is dismantled simply, with low costs.
Further, the air supply pipe is connected with the air bag and penetrates through the steel pipe sleeve, and an air charging pipe parallel to the steel pipe sleeve is connected to the side portion of the air supply pipe.
In this scheme, set up the gas tube, and then gas tube and the effect such as air compressor machine at sea, be convenient for directly aerify the gasbag, realize using.
Further, along the length direction of the steel tube sleeve, the gas filled tube is connected with the steel tube sleeve through at least two connecting pieces.
In this technical scheme, in the slip casting, whole rocking etc. is comparatively great, especially to the steel casing pipe, so in order to ensure to aerify to and the stability of later stage gasbag, set up the connection of many places.
Further, the plugging assembly comprises a plugging bottom plate and a rubber ring positioned on the plugging bottom plate, and the outer side of the rubber ring is tightly attached to the outer wall of the steel pipe pile.
In this technical scheme, select for use the rubber circle, have the cavity in the rubber circle, have certain deformability when receiving the extrusion, and the area of contact with the steel-pipe pile outer wall after the deformation is great, and the shutoff effect is better.
Further, the sealing device also comprises a fixing piece, wherein the rubber ring is close to one side of the steel pipe sleeve and is fixed on the sealing bottom plate through the fixing piece.
In this technical scheme, install the jacket earlier in the engineering, the steel-pipe pile is back mounting structure, and the jacket installation back, the back cover layer board is direct to be pressed in seabed silt, can't carry out the welding work of back cover layer board and steel-pipe pile.
Further, gaps are formed between the upper part and the lower part of the upper layer plugging area and the outer wall of the steel pipe pile respectively, and the distance of the gaps is 30-80mm.
The utility model aims at a jacket foundation by a post pile method, namely, a jacket is firstly installed and then a steel pipe pile is inserted, an annular space formed by the steel pipe pile and a jacket steel sleeve is narrow, and welding work of a protection plate and the steel pipe pile cannot be performed. The 50mm gap is reserved to facilitate the smooth insertion of the steel pipe pile into the steel sleeve.
Drawings
FIG. 1 is a schematic structural view of an underwater grouting inflatable dual plugging device provided by the utility model;
FIG. 2 is a top view of the underwater grouting inflatable dual plugging device provided by the utility model;
FIG. 3 is a view showing one of the usage states of the underwater grouting inflatable dual plugging device provided by the utility model;
FIG. 4 is a second view of the use state of the underwater grouting inflatable dual plugging device provided by the utility model;
in the figure:
100. plugging the area; 200. a steel pipe pile; 300. a steel pipe sleeve; 400. an active plugging assembly; 410. plugging the cavity; 411. an upper protection plate; 412. a lower protection plate; 420. an inflation assembly; 421. an air bag; 422. an air supply pipe; 423. an inflation tube; 500. a passive occlusion assembly; 510. a plugging assembly; 511. plugging the bottom plate; 512. a rubber ring; 600. grouting holes; 700. a connecting piece; 800. and a fixing piece.
Detailed Description
The present utility model will be described in detail below with reference to the embodiments shown in the drawings, but it should be understood that the embodiments are not limited to the present utility model, and functional, method, or structural equivalents and alternatives according to the embodiments are within the scope of protection of the present utility model by those skilled in the art.
Example 1
The core components are mainly described in this embodiment.
An underwater grouting inflatable double plugging device comprises,
the plugging area 100 is located between the steel pipe pile 200 and the steel pipe sleeve 300, the plugging area 100 comprises an active plugging assembly 400 located at the upper layer and a passive plugging assembly 500 located at the lower layer, and the active plugging assembly 400 and the passive plugging assembly 500 are fixedly connected with the inner wall of the steel pipe sleeve 300;
the active plugging assembly 400 comprises a plugging cavity 410 with an opening, wherein the plugging cavity 410 is formed by partially connecting with the steel pipe sleeve 300, an inflation assembly 420 is arranged in the plugging cavity 410, and the inflation assembly 420 is filled in the plugging cavity 410 after being inflated, so that the plugging cavity 410 is isolated from the outside to form an upper plugging area;
the passive plugging assembly 500 includes a plugging assembly 510, where the plugging assembly 510 is respectively connected with the inner wall of the steel pipe sleeve 100 and the outer wall of the steel pipe pile 200, so as to form a lower plugging area.
In this embodiment, a double-layer plugging is selected, so that the risk of slurry leakage can be reduced due to the double plugging in terms of structure and plugging effect, and when unexpected slurry leakage occurs in the upper-layer active plugging device, the lower-layer plugging device can also play a role in slurry stopping.
The embodiment mainly plays a role of stopping slurry, namely an upper active plugging device, and is also a device with plugging function firstly. Only when the upper active plugging device leaks slurry, the lower plugging device can play a role, so that the lower plugging device is a standby plugging device. The plugging cavity of the cavity is selected, so that the plugging device is convenient for construction of a jacket foundation by a post pile method, and if a solid ring is adopted, the pile tip is easy to stab the solid ring when the steel pipe pile is inserted downwards from the top of the steel sleeve.
Compared with the single traditional plugging device adopted in the offshore wind power industry, the double plugging device has the advantages of easiness in installation and operation, good slurry stopping effect, high reliability, high cost performance and the like, and has obvious advantages.
Further, the upper layer plugging area and the lower layer plugging area form a transition space, and the width of the transition space is 100-300mm. In this embodiment, a space of 100-300mm is formed between the upper and lower stopper assemblies to facilitate installation of the rubber ring of the lower stopper and to leave room for inflation of the upper stopper. The height of the grouting body is reduced when the space is too large, so that the structural bearing capacity is affected, and the rubber ring is inconvenient to install when the space is too small.
Further, a grouting hole 600 is provided above the upper blocking area. In this embodiment, because the grouting operation is performed above the plugging area, the upper plugging area closer to the grouting operation is set wider, so that the pressure that the upper plugging area can bear is larger, and the sealing area is better. Specifically, the grouting holes are formed in the sleeve wall above the grouting holes, so that grouting is realized by grout entering along with the grouting holes, and the plugging assembly at the lower part is plugged, so that the pouring effect is ensured.
Further, the plugging cavity 410 includes an upper protection plate 411 and a lower protection plate 412, the upper protection plate 411 and the lower protection plate 412 are both in an annular structure, and the width of the annular structure is smaller than the interval between the steel pipe pile 200 and the steel pipe sleeve 300. In actual use, the steel sleeve and the steel pipe pile are of cylindrical structures, and the annular steel plate can be fixed with the inner wall of the steel sleeve in a full-welded mode, so that the protection of the air bag is facilitated. The jacket is installed in the engineering earlier, and the steel-pipe pile is the mounting structure behind, and the annular space that its formed is narrow and small, can't carry out the welding work of protection shield and steel-pipe pile. If other structures are selected, the air bag has sharp edges and corners, and the air bag is not friendly enough, and the circular arc structure has the advantage, and further, oval steel plates and the like can be selected.
Further, the inflation assembly 420 includes an airbag 421 that is normally retracted within the upper and lower shield panels and against the inner wall of the steel sleeve.
In this embodiment, only the inflation mouth of gasbag is located steel sleeve inner wall and connects, and then under the gasbag normality, does not have gas, occupation space is little, direct assembly can, the installation is dismantled simply, with low costs. Further, compared with other structures, the airbag of the inflation assembly can be placed randomly in a normal state, the occupied space is small, and after inflation, the plugging area of the airbag can be increased along with the addition of air, so that the application range is wider.
Further, an air supply pipe 422 connected with the air bag 421 and penetrating through the steel pipe sleeve 300 is further included, and an air charging pipe 423 parallel to the steel pipe sleeve 300 is connected to the side of the air supply pipe 422. In this scheme, set up the gas tube, and then gas tube and the effect such as air compressor machine at sea, be convenient for directly aerify the gasbag, realize using.
Further, the gas tube 423 is connected to the steel sleeve 300 by at least two connecting members 700 along the length direction of the steel sleeve 300. In this technical scheme, in the slip casting, whole rocking etc. is comparatively great, especially to the steel casing pipe, so in order to ensure to aerify to and the stability of later stage gasbag, set up the connection of many places. In this technical scheme, connecting piece 700 is copper support and the guide tube of being connected with the copper support, the gas tube is covered by the guide tube.
Further, the plugging assembly 510 includes a plugging bottom plate 511 and a rubber ring 512 disposed on the plugging bottom plate 511, and the outer side of the rubber ring 512 is tightly attached to the outer wall of the steel pipe pile 200. In this embodiment, select for use the rubber circle, have the cavity in the rubber circle, have certain deformability when receiving the extrusion, and the area of contact with the steel-pipe pile outer wall after the deformation is great, and the shutoff effect is better. Specifically, the rubber ring is high in elasticity, can reset and is high in strength, certain air pressure in the rubber ring can be born, and filling is ensured.
Further, a fixing member 800 is further included, and the rubber ring 521 is fixed to the plugging base plate 511 via the fixing member 800 near one side of the steel pipe sleeve 300. The jacket is installed in advance in the engineering, and the steel-pipe pile is rear mounting structure, and after the jacket is installed, the back cover layer board is directly pressed in seabed silt, can't carry out the welding work of back cover layer board and steel-pipe pile.
Further, gaps are formed between the upper part and the lower part of the upper layer plugging area and the outer wall of the steel pipe pile 200, and the distance of the gaps is 30-80mm. In this embodiment, to the jacket foundation of the post pile method, i.e. the jacket is installed first and then the steel pipe pile is inserted, the annular space formed by the steel pipe pile and the jacket steel sleeve is narrow, and the welding work of the protection plate and the steel pipe pile cannot be performed. The 50mm gap is reserved to facilitate the smooth insertion of the steel pipe pile into the steel sleeve.
Example 2
In this embodiment, the description will be mainly made with reference to a specific structure.
Referring to fig. 1-4, the dual occlusion device of this embodiment is comprised of a passive occlusion device (i.e., passive occlusion assembly 500) and an active occlusion device (i.e., active occlusion assembly 400). The passive plugging device is located in the lower plugging area, the active plugging device is located in the upper plugging area, and the center-to-center distance between the two plugging areas is 200mm.
The passive sealer consists of a bottom pallet (i.e., the sealing bottom plate 511), a sealing rubber ring (i.e., the rubber ring 512), and a counter-pressure bolt (i.e., the fixing piece 800). The shutoff bottom plate 511 is made of 16mm thick steel plate, and bottom layer board one end welding is on the steel casing inner wall, and one end is 50mm and tip is polished round apart from the steel-pipe pile outer wall. The plugging rubber ring is formed by folding a rubber sheet with the thickness of 10mm and the width of 400mm, and forms an annular structure. The plugging rubber ring is arranged above the bottom supporting plate, and is fixed on the bottom supporting plate by the back pressure bolts. All steel structures must not have sharp protrusions. After the jacket foundation and the steel pipe pile of the booster station are installed in place, the sealing rubber ring of the passive sealing device is tightly adhered to the outer wall of the steel pipe pile, and the first heavy sealing effect is achieved.
The active plugging device consists of an air bag 521, an upper protective plate 411, a lower protective plate 412, an air charging nozzle, an air charging pipe, an air stopping valve and an air inlet nozzle. The air bag consists of a rubber air bag, an air charging nozzle, an air supply pipe and a switching valve (professional customization), and the air bag is arranged between the upper and lower protection plates. The upper and lower protection plates are made of 16mm thick steel plates, specifically a protection ring plate, one end of the protection ring plate is welded on the inner wall of the steel sleeve 300, and the other end of the protection ring plate is 50mm away from the outer wall of the steel pipe pile 200 and the end of the protection ring plate is polished round. The air charging nozzle is fixed on the air bag (the same as the tire principle), one end of the air supply pipe is connected with the air charging nozzle, the other end of the air supply pipe is provided with a switching valve, the air supply pipe penetrates through the steel sleeve and is connected with an external air supply pipe (a threaded joint), the air supply pipe vertically and upwards leads to a position 2.5m above the water surface along the outer wall of the steel sleeve, the top of the air supply pipe (with the diameter of 20 mm) is provided with a horizontal bent pipe, the horizontal bent pipe is provided with an air stopping valve, and the end part of the horizontal bent pipe is provided with an air inlet nozzle. When the steel pipe pile is inflated, the air inlet nozzle is connected with the air compressor, the air stop valve is opened, the air compressor inflates the air bag through the inflation pipe, so that the air bag expands and tightly props against the outer wall of the steel pipe pile, a closed grouting space is formed, and the second plugging effect is achieved. All steel structures must not have sharp protrusions.
In this embodiment, referring to fig. 1-2, it can be seen that after the upper layer plugging area is annularly arranged around the inner wall of the sleeve by the air bag, an active plugging assembly 400 is formed, and is installed and fixed; the lower plugging area is formed by annularly installing and fixing a rubber ring around the inner wall of the sleeve, so that the passive plugging assembly 500 is formed.
The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. The underwater grouting inflatable double plugging device is characterized by comprising,
the blocking area is positioned between the steel pipe pile and the steel pipe sleeve and comprises an active blocking component positioned at the upper layer and a passive blocking component positioned at the lower layer, and the active blocking component and the passive blocking component are fixedly connected with the inner wall of the steel pipe sleeve;
the active plugging assembly comprises a plugging cavity with an opening, wherein the plugging cavity is formed by partially connecting a steel pipe sleeve, an inflation assembly is arranged in the plugging cavity, and the inflation assembly is filled in the plugging cavity after being inflated, so that the plugging cavity is isolated from the outside to form an upper plugging area;
the passive plugging assembly comprises a plugging assembly, and the plugging assembly is respectively connected with the inner wall of the steel pipe sleeve and the outer wall of the steel pipe pile to form a lower plugging area.
2. The underwater grouting inflatable dual plugging device according to claim 1, wherein the upper plugging area and the lower plugging area form a transition space, and the width of the transition space is 100-300mm.
3. The underwater grouting inflatable dual plugging device according to claim 2, wherein grouting holes are arranged above the upper plugging area.
4. The underwater grouting inflatable dual plugging device according to claim 1, wherein the plugging cavity comprises an upper protection plate and a lower protection plate, the upper protection plate and the lower protection plate are of annular structures, and the width of the annular structures is smaller than the interval between the steel pipe pile and the steel pipe sleeve.
5. The underwater grouting inflatable dual plugging device of claim 4, wherein the inflation assembly comprises an air bag which is normally contracted within the range of the upper and lower protection plates and is close to the inner wall of the steel sleeve.
6. The underwater grouting inflatable dual plugging device according to claim 5, further comprising an air supply pipe connected with the air bag and penetrating through the steel pipe sleeve, wherein an air supply pipe parallel to the steel pipe sleeve is connected to the side of the air supply pipe.
7. The underwater grouting inflatable dual plugging device according to claim 6, wherein the gas filled tube is connected with the steel sleeve by at least two connecting pieces along the length direction of the steel sleeve.
8. The underwater grouting inflatable dual-plugging device according to claim 1, wherein the plugging assembly comprises a plugging bottom plate and a rubber ring positioned on the plugging bottom plate, and the outer side of the rubber ring is tightly attached to the outer wall of the steel pipe pile.
9. The underwater grouting inflatable dual plugging device according to claim 8, further comprising a fixing member, wherein the rubber ring is fixed on the plugging bottom plate through the fixing member at one side close to the steel pipe sleeve.
10. The underwater grouting inflatable dual plugging device according to claim 1, wherein gaps are formed between the upper portion and the lower portion of the upper plugging area and the outer wall of the steel pipe pile respectively, and the distance of the gaps is 30-80mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223055979.1U CN219033222U (en) | 2022-11-17 | 2022-11-17 | Underwater grouting inflatable double plugging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223055979.1U CN219033222U (en) | 2022-11-17 | 2022-11-17 | Underwater grouting inflatable double plugging device |
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| Publication Number | Publication Date |
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| CN219033222U true CN219033222U (en) | 2023-05-16 |
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| CN202223055979.1U Active CN219033222U (en) | 2022-11-17 | 2022-11-17 | Underwater grouting inflatable double plugging device |
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| CN (1) | CN219033222U (en) |
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