CN108612918B - Sealing device for pipeline penetrating through differential settlement double walls and construction method - Google Patents
Sealing device for pipeline penetrating through differential settlement double walls and construction method Download PDFInfo
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- CN108612918B CN108612918B CN201810727885.3A CN201810727885A CN108612918B CN 108612918 B CN108612918 B CN 108612918B CN 201810727885 A CN201810727885 A CN 201810727885A CN 108612918 B CN108612918 B CN 108612918B
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- sealing
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- sleeve
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- 238000007789 sealing Methods 0.000 title claims abstract description 64
- 230000000149 penetrating effect Effects 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 99
- 230000001050 lubricating effect Effects 0.000 claims description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 239000003566 sealing material Substances 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 18
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 description 7
- 239000003673 groundwater Substances 0.000 description 5
- 238000010008 shearing Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
Abstract
The utility model provides a sealing device and construction method that pipeline passed through inhomogeneous settlement double wall, two coaxial sealing sleeves of penetrating two wall bodies pre-buried, the outer terminal surface of sealing sleeve that radius is big fixes a round and erects the outer flange board, the outer parallel arrangement of outer flange board takes the apron of center through-hole, the outer edge of apron center through-hole outwards extends the back and is the penetrating drum of both ends, set up pipeline and pass coaxial sealing sleeve one, subsiding seam, sealing sleeve two, drum after penetrating out in proper order, seal between pipeline outer wall and sealing sleeve one inner wall, the drum inner wall; the gap between the outer edge plate and the cover plate is sealed, four welding studs are symmetrically arranged on the outer edge plate at the periphery of the annular fixing ring, and the four welding studs are sequentially locked and fixed with the cover plate, the base plate and the screw cap, and then an up-down movement amount is reserved. The construction steps are as follows: prefabricated water-stop sleeve, outer edge plate, flange, cover plate, pre-buried water-stop sleeve, primary seal, fixed cover plate and secondary seal. The invention can solve the technical problems of multiple repair, long construction period and large hidden danger in the prior art.
Description
Technical Field
The invention relates to the field of sealing of water treatment structures, in particular to a sealing device and a construction method for a pipeline penetrating through uneven settlement double walls in the municipal field.
Background
In water treatment structure designs, water storage structures are often built in close proximity to other structures to save land. Because the structures on two sides have different functions and different structural structures, settlement joints are arranged at the adjacent positions of the two structures to form a double wall. In most cases, uneven settlement occurs to the double walls due to different settlement amounts of structures on two sides, and the shearing damage risk caused by the uneven settlement is faced when the pipeline passes through the double walls. Meanwhile, if the pipeline passes through the double walls and is positioned below the ground water level, the filling material of the settlement joint between the double walls cannot achieve airtight waterproof, and ground water possibly enters the structures on the two sides through the joint.
To solve this problem, the following technical measures are mostly adopted in the current design: and pre-burying a water stop sleeve with the diameter matched with that of the crossing pipeline on a wall body at one side of the pipeline crossing water storage structure, and pre-burying a water stop sleeve with a larger diameter on a wall body at one side of the non-water storage structure according to the estimated sedimentation quantity difference of the structures at two sides. After concrete pouring of the two side walls is completed, gaps between the water stop sleeves and the pipelines on the walls of the pipelines and the water storage structures are filled with rigid sealing materials, the pipelines penetrate through the water stop sleeves on the walls of the non-water storage structures, and the gaps between the sleeves and the pipelines are temporarily sealed by flexible materials, so that shearing damage of settlement differences of the structures on the two sides to the pipelines is avoided, and meanwhile, the effect of preventing groundwater from entering the structures through the telescopic gaps is also achieved.
The structures on two sides are ballasted or fully loaded to settle for about one month to basically complete about 80% of the final settlement, and the temporary sealing material between the pipeline and the water-stopping sleeve is required to be repaired and perfected at any time during the process. And in the following about one year, the sealing material needs to be continuously observed and repaired, so that the sealing material is suitable for subsequent continuous settlement until the wall bodies at the two sides reach the final settlement.
The prior technical measures for the pipeline to pass through the differential settlement double walls need to repair the sealing material at the pipeline wall-passing position for many times before the structures at two sides reach the final settlement amount, the subsequent management operation is more complicated, and the engineering hidden trouble is increased.
Disclosure of Invention
In order to overcome the defects and shortcomings of the technology, the invention provides a sealing device for a pipeline to pass through a differential settlement double wall and a construction method, which can solve the technical problems that sealing materials at a pipeline wall penetrating position need to be repaired for multiple times before structures on two sides reach the final settlement amount in the prior technical measures of the pipeline to pass through the differential settlement double wall, the follow-up management operation is complicated, the construction period is long and the engineering hidden danger is large.
The invention adopts the following technical scheme:
a sealing device for a pipeline penetrating through uneven settlement double walls comprises a first wall body of a water storage structure and a second wall body of a non-water storage structure, settlement joints are reserved between the first wall body and the second wall body which are arranged in parallel, a first water stop sleeve and a second water stop sleeve which are respectively penetrated through the first wall body and the second wall body and are penetrated through at two ends in a penetrating and transverse and coaxial mode are respectively arranged, the inner diameter of the second water stop sleeve is larger than that of the first water stop sleeve,
the outer end face of the water-stop sleeve is fixed with a circle of vertically arranged outer edge plate, the outer side of the outer edge plate is provided with a cover plate with a central through hole in parallel, the outer edge of the central through hole of the cover plate is outwards extended to form a cylinder with two penetrating ends, a pipeline is arranged to sequentially pass through the coaxial water-stop sleeve I, the settlement joint, the water-stop sleeve II and the cylinder and then pass out, the inner diameter of the water-stop sleeve II is larger than the outer diameter of the pipeline, the interval between the inner wall of the water-stop sleeve II and the outer wall of the passing pipeline is delta h, and a circle of sealing material is respectively arranged between the outer wall of the pipeline and the inner wall of the water-stop sleeve I and the inner wall of the cylinder for sealing;
the outer side surface of the outer edge plate is provided with a circle of raised annular fixing ring, the fixing ring is provided with an annular fixing groove which is concave along the pitch diameter, an annular sealing rubber ring is embedded in the fixing groove to seal a gap between the outer edge plate and the cover plate, and four welding studs are symmetrically arranged on the outer edge plate at the periphery of the annular fixing ring;
the cover plate is provided with vertical long bolt holes corresponding to the welding studs, and the welding studs pass through the long bolt holes on the cover plate and are then sleeved with the backing plate and the nuts for locking and fixing.
The distance delta h between the second inner wall of the water stop sleeve and the outer wall of the crossing pipeline should meet the final sedimentation difference.
The length L of the long bolt hole is equal to two times of the distance Deltah between the two inner walls of the water stop sleeve and the outer wall of the crossing pipeline, and the distance Deltah is expressed as L=2 Deltah by a formula.
A circle of raised fixing blocks are arranged around each long bolt hole on the cover plate, the inner sides of the fixing blocks are embedded with lubricating pads, and long holes with the same shape and size are formed in the lubricating pads corresponding to the long bolt holes; the welding studs sequentially penetrate through the long bolt holes on the cover plate and the long holes on the lubricating pad and are then sleeved with the backing plate and the nuts for fixation.
The middle parts of the side walls of the first water stop sleeve and the second water stop sleeve are respectively provided with a circle of flanges which are outwards protruded, and the flanges are parallel to the wall body and are respectively embedded into the first wall body and the second wall body.
The annular fixing ring is a ring formed by encircling round steel bars and welded on the outer side face of the outer edge plate.
The fixed fender is a rectangular fender surrounded by round steel bars, the rectangular fender is welded on the outer side surface of the cover plate, and the lubricating pad embedded in the rectangular fender corresponds to the rectangular fender.
The lubricating pad adopts a polytetrafluoroethylene plate with the thickness of 5 mm.
The outer edge plate and the cover plate are square steel plates, and the cylinder and the gasket are made of steel.
A construction method of a sealing device for a pipeline penetrating through a non-uniform settlement double wall comprises the following steps:
1) Prefabricating a second water stop sleeve, an outer edge plate and a flange: welding four symmetrical welding studs on the outer side surface of the outer edge plate; a ring-shaped raised fixing ring is welded on the periphery of the central through hole of the outer edge plate, and a ring-shaped fixing groove which is concave along the pitch diameter is formed in the fixing ring;
2) Prefabricating a cover plate: prefabricating a cylinder with the outer edge of the cover plate and the central through hole extending outwards; the cover plate is prefabricated with vertical long bolt holes corresponding to the welding studs; a circle of raised fixing blocks are arranged around each long bolt hole on the cover plate, the inner sides of the fixing blocks are embedded with lubricating pads, and long holes with the same shape and size are formed in the lubricating pads corresponding to the long bolt holes;
3) Pre-buried water-stop sleeve pipe: the first wall body and the second wall body are respectively embedded with a coaxial water stop sleeve I and a water stop sleeve II prefabricated in the step 1), and the outer edge plate is arranged on the outer side of the second wall body;
4) Primary sealing: after the local cast concrete of the first wall body embedded with the first water stop sleeve and the second wall body embedded with the second water stop sleeve is condensed, a pipeline sequentially passes through the first water stop sleeve, the settlement joint and the second water stop sleeve and then passes out; filling a gap between the pipeline and a water stop sleeve I in a wall I with a sealing material, and embedding an annular sealing rubber ring higher than the fixing groove into the fixing groove in the step 2);
5) And (3) fixing a cover plate: placing a lubricating pad in a fixed block on the cover plate, enabling a welding stud to sequentially pass through holes of the cover plate, the fixed block and the lubricating pad, sleeving a steel gasket on the welding stud, and tightening a screw cap for fixation, so that a sealing rubber ring in the step 4) seals a gap between the outer edge plate and the cover plate;
6) And (3) secondary sealing: the gap between the pipe and the cover plate center cylinder is filled with a sealing material.
The invention has the following positive and beneficial effects:
the invention designs a sealing device for a pipeline penetrating through uneven settlement double walls, which aims to overcome the defects of the traditional technical measures when the pipeline penetrates through the uneven settlement double walls, and the sealing device can prevent the pipeline from shearing damage caused by uneven settlement at the position of penetrating through the double walls after being installed once, effectively prevent external groundwater from penetrating into structures at two sides and avoid subsequent maintenance work. The device disclosed by the invention adopts common materials in municipal engineering, is simple to manufacture and convenient and fast to construct, and can be effectively popularized and applied in actual engineering.
The sealing device for the pipeline passing through the uneven settlement double wall, which is designed by the invention, can not only prevent the pipeline from shearing damage caused by uneven settlement at the position of passing through the double wall, but also prevent external groundwater from penetrating into structures at two sides, and does not need to observe and repair the sealing condition at the position of passing through the wall in the long-term settlement stabilization process of the structures at two sides, thereby having simple management and short construction period.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the outer flange plate and the sealing rubber ring;
FIG. 3 is a schematic illustration of the installation of a cover plate and polytetrafluoroethylene lubricating pad;
fig. 4 is a schematic diagram of the installation of an embodiment of the application of the present invention.
Figure number: the water-stop sleeve comprises a first water-stop sleeve body, a second outer edge plate, a 3-welded stud, a 4-fixed ring, a 5-sealing rubber ring, a 6-cover plate, a 7-cylinder, an 8-fixed baffle, a 9-lubricating pad, a 10-gasket, a 11-nut, a 12-wall body I, a 13-wall body II, a 14-settlement joint, a 15-water-stop sleeve body I, a 16-pipeline, a 17-sealing material, a 18-pump room, a 19-water absorbing well, a 20-water pump and an adjustable support.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
The following examples are given for the purpose of illustration only and are not intended to limit the embodiments of the invention. Various other changes and modifications may be made by one of ordinary skill in the art in light of the following description, and such obvious changes and modifications are contemplated as falling within the spirit of the present invention.
Referring to the drawings, a sealing device for a pipeline penetrating through uneven settlement double walls comprises a first wall body 12 of a water storage structure and a second wall body 13 of a non-water storage structure, a settlement joint 14 is reserved between the first wall body 12 and the second wall body 13 which are arranged in parallel, a first water stop sleeve 15 and a second water stop sleeve 1 which are respectively penetrated through the first wall body 12 and the second wall body 13 and are penetrated at two ends in a penetrating and transverse and coaxial manner are embedded, the inner diameter of the second water stop sleeve 1 is larger than that of the first water stop sleeve 15,
referring to fig. 1, a circle of vertically arranged outer edge plate 2 is fixed on the outer end surface of the second water stop sleeve 1, a cover plate 6 with a central through hole is arranged in parallel on the outer side of the outer edge plate 2, the outer edge of the central through hole of the cover plate 6 extends outwards to form a cylinder 7 with two through ends, a pipeline 16 is arranged to sequentially pass through the first water stop sleeve 15, the settlement joint 14, the second water stop sleeve 1 and the cylinder 7 which are coaxial, the inner diameter of the second water stop sleeve 1 is larger than the outer diameter of the pipeline 16, the distance between the inner wall of the second water stop sleeve 1 and the outer wall of the crossing pipeline 16 is delta h, and a circle of sealing material 17 is respectively arranged between the outer wall of the pipeline 16 and the inner wall of the first water stop sleeve 15 and the inner wall of the cylinder 7 to seal;
referring to fig. 2, a ring of raised annular fixing ring 4 is arranged on the outer side surface of the outer edge plate 2, the fixing ring 4 is provided with an annular fixing groove recessed along the pitch diameter, an annular sealing rubber ring 5 is embedded in the fixing groove to seal a gap between the outer edge plate 2 and the cover plate 6, and four welding studs 3 are symmetrically arranged on the outer edge plate 2 at the periphery of the annular fixing ring 4;
the cover plate 6 is provided with vertical long bolt holes corresponding to the welding studs 3, and the welding studs 3 penetrate through the long bolt holes on the cover plate 6 and are then sleeved with a base plate 10 and a nut 11 for locking and fixing.
The distance Deltah between the inner wall of the second water stop sleeve 1 and the outer wall of the crossing pipeline 16 should meet the final sedimentation difference.
The length L of the long bolt hole is equal to two times of the distance Δh between the inner wall of the second water stop sleeve 1 and the outer wall of the crossing pipeline 16, and is expressed as l=2 Δh by a formula.
Referring to fig. 3, a circle of raised fixing blocks 8 are arranged around each long bolt hole on the cover plate 6, the inner sides of the fixing blocks 8 are embedded with lubricating pads 9, and long holes with the same shape and size are formed in the lubricating pads 9 corresponding to the long bolt holes; the welding stud 3 sequentially passes through a long bolt hole on the cover plate 6 and a long hole on the lubricating pad 9 and is then sleeved with a backing plate 10 and a screw cap 11 for fixation.
The middle parts of the side walls of the first water stop sleeve 15 and the second water stop sleeve 1 are respectively provided with a circle of outwards-protruding flanges, and the flanges are parallel to the wall body and are respectively embedded into the first wall body 12 and the second wall body 13.
The annular fixing ring 4 is a ring formed by encircling round steel bars and is welded on the outer side face of the outer edge plate 2.
The fixed baffle 8 is a rectangular surrounding baffle formed by surrounding round steel bars, is welded on the outer side face of the cover plate 6, and is internally embedded with a rectangular lubricating pad 9.
The lubricating pad 9 is made of polytetrafluoroethylene plates with the thickness of 5 mm.
The outer edge plate 2 and the cover plate 6 are square steel plates, and the cylinder 7 and the gasket 10 are made of steel.
A construction method of a sealing device for a pipeline penetrating through a non-uniform settlement double wall comprises the following steps:
1) Prefabricating a second water stop sleeve 1, an outer edge plate 2 and a flange: four symmetrical welding studs 3 are welded on the outer side surface of the outer edge plate 2; a circle of raised annular fixing ring 4 is welded on the periphery of the central through hole of the outer edge plate 2, and an annular fixing groove which is concave along the pitch diameter is formed in the fixing ring 4;
2) Prefabricated cover plate 6: prefabricating a cylinder 7 extending outwards from the outer edge of the cover plate 6 and the central through hole; the cover plate 6 is prefabricated with vertical long bolt holes corresponding to the welding studs 3; a circle of raised fixing blocks 8 are arranged around each long bolt hole on the cover plate 6, the inner sides of the fixing blocks 8 are embedded with lubricating pads 9, and long holes with the same shape and size are formed in the lubricating pads 9 corresponding to the long bolt holes;
3) Pre-buried water-stop sleeve pipe: the first wall body 12 and the second wall body 13 are respectively embedded with a coaxial water stop sleeve 15 and a water stop sleeve 1 prefabricated in the step 1), and the outer edge plate 2 is arranged on the outer side of the second wall body 13;
4) Primary sealing: after the local casting concrete of the first wall body 12, which is embedded with the first water stop sleeve 15, and the second wall body 13, which is embedded with the second water stop sleeve 1, is condensed, a pipeline 16 sequentially passes through the first water stop sleeve 15, the settlement joint 14 and the second water stop sleeve 1 and then passes out; filling a gap between the pipeline 16 and a water stop sleeve I15 in a wall I12 with a sealing material 17, and embedding an annular sealing rubber ring 5 higher than the fixing groove into the fixing groove in the step 2);
5) Fixed cover plate 6: placing a lubricating pad 9 in a fixed block 8 on a cover plate 6, enabling a welding stud 3 to sequentially pass through holes of the cover plate 6, the fixed block 8 and the lubricating pad 9, sleeving a steel gasket 10 on the welding stud 3, and tightening a screw cap 11 for fixation, so that a sealing rubber ring 5 in the step 4) seals a gap between the outer edge plate 2 and the cover plate 6;
6) And (3) secondary sealing: the gap between the pipe 16 and the central cylinder 7 of the cover plate 6 is filled with a sealing material 17.
When the pipeline 16 passes through the double walls of the water storage structure and other structures which are arranged in close proximity, a water stop sleeve 15 matched with the diameter of the passing pipeline 16 is pre-buried on the wall body 12 on one side of the pipeline 16 passing through the water storage structure. And pre-burying a second water stop sleeve 1 with a larger diameter on a second wall 13 of the non-water storage structure according to the estimated sedimentation difference of the structures at two sides, wherein the distance Deltah between the inner wall of the second water stop sleeve 1 and the outer wall of the crossing pipeline 16 is larger than the final sedimentation difference. The outer end of the second water stop sleeve pipe 1 is welded with a steel square outer edge plate 2, four welding studs 3 are welded on the periphery of the outer edge plate 2, a through hole with the same diameter as that of the second water stop sleeve pipe 1 is formed in the center of the outer edge plate 2, a ring-shaped fixing ring 4 is arranged on the periphery of the through hole, the ring-shaped fixing ring 4 is welded with the outer edge plate 2 by adopting round steel bars, the ring-shaped fixing ring 4 is provided with a ring-shaped fixing groove along the middle radial inward concave, and a circular sealing rubber ring 5 is arranged in the ring-shaped fixing groove.
Four long bolt holes are reserved around the cover plate 6, the length L of the long bolt holes, namely the distance between the centers of two ends, is equal to two times of the distance Deltah between the inner wall of the water stop sleeve II 1 and the outer wall of the penetrating pipeline 16, namely 2 Deltah. A circle of fixed baffle 8 for accommodating rectangular lubricating pads 9 is arranged around each long bolt hole, the fixed baffle 8 is welded with the cover plate 6 by adopting round steel bars, the lubricating pads 9 are made of polytetrafluoroethylene plates with the thickness of 5mm, and the middle parts of the polytetrafluoroethylene plates are provided with long holes corresponding to the long bolt holes; the center of the cover plate 6 is provided with a round hole matched with the diameter of the passing pipeline 16, and a cylinder 7 with the same inner diameter as the diameter of the round hole and the length capable of meeting the requirement of filling the sealing material 17 is welded around the round hole.
When the concrete pouring of the wall bodies on the two sides is finished, the gap between the pipeline 16 and the water sealing sleeve I15 and the pipeline 16 on the water storage structure wall body I12 is filled with a rigid sealing material 17 according to the sealing requirement, then the pipeline 16 passes through the water sealing sleeve II 1 on the non-water storage structure wall body II 13, and the gap between the water sealing sleeve II 1 and the pipeline 16 is empty and is not sealed.
A sealing rubber ring 5 is placed in a ring-shaped fixing groove 4 on the outer edge plate 2, and then a steel cover plate 6 is used for penetrating through a pipeline 16, so that long bolt holes on the cover plate 6 are aligned with four welding studs 3 on the outer edge plate 2. A polytetrafluoroethylene lubricating pad 9 is placed in a fixed block 8 on the cover plate 6, a steel gasket 10 is sleeved on the welding stud 3, and a screw cap 11 is screwed down, so that the sealing rubber ring 5 is in a proper compression ratio range.
Finally, the gap between the pipe 16 and the central cylinder 7 of the cover plate 6 is filled with a sealing material 17.
Referring to the application implementation diagram of fig. 4, a water absorption well is arranged in front of a water distribution pump room of the water plant, and a water distribution pump absorbs water from the water absorption well. The water distribution pump house is semi-underground, and a sedimentation joint 14 is arranged between the wall of the pump house and the pool wall of the water absorbing well.
The water distribution pump suction pipe transversely penetrates through the wall of the water absorption well pool and the wall of the water distribution pump room 18, so that shearing damage of the suction pipe caused by uneven settlement of the water absorption well 19 of a water storage structure and the water distribution pump room 18 of a non-water storage structure is avoided, underground water in the settlement joint 14 is prevented from penetrating into the pump room 18 through a connecting pipe, and the device is installed on the wall of an access point of the suction pipe in the water distribution pump room 18, and has good operation effect.
Claims (9)
1. The sealing device for the pipeline penetrating through the differential settlement double wall comprises a first wall body (12) of a water storage structure and a second wall body (13) of a non-water storage structure, wherein a settlement joint (14) is reserved between the first wall body (12) and the second wall body (13) which are arranged in parallel, a first transverse coaxial water stopping sleeve (15) and a second water stopping sleeve (1) which penetrate through the first wall body (12) and the second wall body (13) respectively are embedded at two ends in a penetrating manner, the inner diameter of the second water stopping sleeve (1) is larger than that of the first water stopping sleeve (15), and the sealing device is characterized in that,
the sealing sleeve comprises a sealing sleeve II (1), a sealing sleeve II (1) and a sealing sleeve 7, wherein a circle of vertically arranged outer edge plate (2) is fixed on the outer end face of the sealing sleeve II, a cover plate (6) with a central through hole is arranged on the outer side of the outer edge plate (2) in parallel, the outer edge of the central through hole of the cover plate (6) is outwards extended to form a cylinder (7) with two ends penetrating, a pipeline (16) sequentially penetrates through a coaxial sealing sleeve I (15), a settlement joint (14), the sealing sleeve II (1) and the cylinder (7) and then penetrates out, the inner diameter of the sealing sleeve II (1) is larger than the outer diameter of the pipeline (16), the distance between the inner wall of the sealing sleeve II (1) and the outer wall of the penetrating pipeline (16) is delta h, and a circle of sealing material (17) is respectively arranged between the outer wall of the pipeline (16) and the inner wall of the sealing sleeve I (15) and the inner wall of the cylinder (7);
the outer side surface of the outer edge plate (2) is provided with a circle of raised annular fixing ring (4), the fixing ring (4) is provided with an annular fixing groove which is concave along the pitch diameter, an annular sealing rubber ring (5) is embedded in the fixing groove to seal a gap between the outer edge plate (2) and the cover plate (6), and four welding studs (3) are symmetrically arranged on the outer edge plate (2) at the periphery of the annular fixing ring (4);
the cover plate (6) is provided with vertical long bolt holes corresponding to the welding studs (3), and the welding studs (3) penetrate through the long bolt holes on the cover plate (6) and are then sleeved with the backing plate (10) and the nuts (11) in a locking and fixing mode;
a circle of raised fixing blocks (8) are arranged around each long bolt hole on the cover plate (6), a lubricating pad (9) is embedded into the inner side of each fixing block (8), and long holes with the same shape and size are formed in the lubricating pad (9) corresponding to the long bolt holes; the welding stud (3) sequentially passes through a long bolt hole on the cover plate (6) and a long hole on the lubricating pad (9) and is then sleeved with the backing plate (10) and the screw cap (11) for fixation.
2. A sealing device for a pipeline crossing differential settlement double wall according to claim 1, wherein the distance Δh between the inner wall of the second water stop sleeve (1) and the outer wall of the crossing pipeline (16) should satisfy the final settlement difference.
3. A sealing device for a pipe through differential settlement double wall according to claim 1, wherein the length L of the long bolt hole is equal to two times the distance Δh between the inner wall of the second water stop sleeve (1) and the outer wall of the through pipe (16), and is expressed as l=2 Δh by a formula.
4. The sealing device for the double-wall through uneven settlement of the pipeline according to claim 1, wherein the middle parts of the side walls of the first water stop sleeve (15) and the second water stop sleeve (1) are respectively provided with a circle of flanges which are outwards protruded, and the flanges are respectively embedded into the first wall (12) and the second wall (13) in parallel to the wall.
5. The sealing device for the pipeline penetrating through the differential settlement double wall according to claim 1, wherein the annular fixing ring (4) is a circular ring surrounded by round steel bars and is welded on the outer side surface of the outer edge plate (2).
6. The sealing device for the pipeline penetrating through the differential settlement double wall according to claim 1, wherein the fixed baffle (8) is a rectangular enclosure formed by round steel bars, the rectangular enclosure is welded on the outer side surface of the cover plate (6), and the lubricating pad (9) embedded in the rectangular enclosure corresponds to the rectangle.
7. A sealing arrangement for pipes through non-uniform settlement double walls according to claim 1 or 6, characterised in that the lubricating pad (9) is a 5mm thick polytetrafluoroethylene plate.
8. A sealing device for a double wall for pipe passing through differential settlement according to claim 1, wherein the outer flange plate (2) and the cover plate (6) are both square steel plates, and the cylinder (7) and the gasket (10) are both made of steel.
9. A method of constructing a sealing device for a pipe through a non-uniform settlement double wall according to claim 1, comprising the steps of:
1) Prefabricated water-stop sleeve II (1), outer edge plate (2) and flange: four symmetrical welding studs (3) are welded on the outer side surface of the outer edge plate (2); a circle of raised annular fixing ring (4) is welded on the periphery of the central through hole of the outer edge plate (2), and an annular fixing groove which is concave along the pitch diameter is formed in the fixing ring (4);
2) Prefabricated apron (6): prefabricating a cylinder (7) extending outwards from the outer edge of the cover plate (6) and the central through hole; the cover plate (6) is prefabricated with vertical long bolt holes corresponding to the welding studs (3); a circle of raised fixing blocks (8) are arranged around each long bolt hole on the cover plate (6), a lubricating pad (9) is embedded into the inner side of each fixing block (8), and long holes with the same shape and size are formed in the lubricating pad (9) corresponding to the long bolt holes;
3) Pre-buried water-stop sleeve pipe: the first wall body (12) and the second wall body (13) are respectively embedded with a coaxial water stop sleeve I (15) and a water stop sleeve II (1) prefabricated in the step 1), and the outer edge plate (2) is arranged on the outer side of the second wall body (13);
4) Primary sealing: after the local casting concrete at the first water-stop sleeve (15) embedded in the first wall (12) and the second water-stop sleeve (1) embedded in the second wall (13) is condensed, a pipeline (16) sequentially passes through the first water-stop sleeve (15), the sedimentation slot (14) and the second water-stop sleeve (1) and then passes out; filling a gap between the pipeline (16) and a water stop sleeve I (15) in a wall I (12) with a sealing material (17), and embedding an annular sealing rubber ring (5) higher than the fixing groove into the fixing groove in the step 1);
5) Fixed apron (6): a lubricating pad (9) is placed in a fixed block (8) on a cover plate (6), a welding stud (3) sequentially penetrates through holes of the cover plate (6), the fixed block (8) and the lubricating pad (9), a steel gasket (10) is sleeved on the welding stud (3), a screw cap (11) is screwed down for fixation, and a sealing rubber ring (5) in the step 4) seals a gap between the outer edge plate (2) and the cover plate (6);
6) And (3) secondary sealing: the gap between the pipe (16) and the central cylinder (7) of the cover plate (6) is filled with a sealing material (17).
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| CN201810727885.3A CN108612918B (en) | 2018-07-05 | 2018-07-05 | Sealing device for pipeline penetrating through differential settlement double walls and construction method |
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| CN201810727885.3A CN108612918B (en) | 2018-07-05 | 2018-07-05 | Sealing device for pipeline penetrating through differential settlement double walls and construction method |
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| CN108612918A CN108612918A (en) | 2018-10-02 |
| CN108612918B true CN108612918B (en) | 2023-10-27 |
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| CN111188948A (en) * | 2020-02-28 | 2020-05-22 | 广船国际有限公司 | Cargo oil pipe cabin penetrating method |
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| CN201126063Y (en) * | 2007-04-16 | 2008-10-01 | 符永利 | Flexible water string |
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| CN105697887A (en) * | 2016-03-28 | 2016-06-22 | 北京市政建设集团有限责任公司 | Water proofing method for situation that pipeline penetrates hydraulic structure settlement joint |
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| CN208579038U (en) * | 2018-07-05 | 2019-03-05 | 北京市市政工程设计研究总院有限公司 | A kind of sealing device of the double walls of Pipeline Crossing Program differential settlement |
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| GB1514465A (en) * | 1975-05-15 | 1978-06-14 | Hudson D | Pipe assemblies |
| JPH06249390A (en) * | 1993-02-26 | 1994-09-06 | Kyokuto Rubber Kk | Method and device for preventing water leakage in pit of piping system |
| CN201126063Y (en) * | 2007-04-16 | 2008-10-01 | 符永利 | Flexible water string |
| CN104455755A (en) * | 2014-12-03 | 2015-03-25 | 浙江省火电建设公司 | Waterproof sealing device of underground thrust wall feed-through sleeve |
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| CN108612918A (en) | 2018-10-02 |
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