CN110985765A - Flexible waterproof sealing structure of wall bushing and construction method - Google Patents
Flexible waterproof sealing structure of wall bushing and construction method Download PDFInfo
- Publication number
- CN110985765A CN110985765A CN201911408674.4A CN201911408674A CN110985765A CN 110985765 A CN110985765 A CN 110985765A CN 201911408674 A CN201911408674 A CN 201911408674A CN 110985765 A CN110985765 A CN 110985765A
- Authority
- CN
- China
- Prior art keywords
- sealing
- wall bushing
- wall
- ring
- medium pipeline
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 290
- 238000010276 construction Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000003825 pressing Methods 0.000 claims description 78
- 238000011144 upstream manufacturing Methods 0.000 claims description 56
- 238000003466 welding Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 21
- 230000000149 penetrating effect Effects 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 238000009826 distribution Methods 0.000 claims description 13
- 230000007935 neutral effect Effects 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000005056 compaction Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 23
- 230000003204 osmotic effect Effects 0.000 abstract description 10
- 230000009471 action Effects 0.000 abstract description 7
- 239000003566 sealing material Substances 0.000 description 31
- 210000004907 gland Anatomy 0.000 description 21
- 230000008569 process Effects 0.000 description 12
- 238000012545 processing Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 230000000712 assembly Effects 0.000 description 8
- 238000000429 assembly Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000004567 concrete Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000003673 groundwater Substances 0.000 description 5
- 230000007123 defense Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000012946 outsourcing Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
Classifications
-
- 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
- F16L5/10—Sealing by using sealing rings or sleeves only
Abstract
The invention provides a wall bushing flexible waterproof sealing structure and a construction method thereof, wherein the structure comprises a wall bushing pre-embedded in a wall body, a medium pipeline sleeved in the wall bushing and a sealing assembly arranged between the wall bushing and the medium pipeline, a middle wing ring plate and an end wing ring plate are arranged on the outer wall of a pipe body of the wall bushing, and the sealing assembly is a flexible sealing structure with pretightening force formed by fastening a plurality of groups of sealing rings separated by non-fixed prepressing baffle rings arranged in the wall bushing through an end baffle plate. The sealing assembly adopts a flexible sealing structure with pretightening force, so that medium pipelines are stressed evenly, sealing rings are separated into a plurality of groups by non-fixed prepressing baffle rings, and the sealing rings are in a pretightening deformation state under the action of end baffles; through adjusting the positions of the wing ring plates at the two end parts of the wall bushing, the wing ring plates at the end parts are embedded into the wall body to form a mechanical labyrinth seal structure, and the waterproof seal effect under the conditions of high underground water level and large osmotic pressure is met.
Description
Technical Field
The invention belongs to the technical field of water supply and drainage in industrial buildings, civil buildings and municipal buildings, relates to a waterproof sealing technology when a medium pipeline passes through an outer protective structure wall body, and particularly relates to a flexible waterproof sealing structure of a wall bushing and a construction method.
Background
At present, in the water supply and drainage professions of industrial buildings, civil buildings and municipal works, when a medium pipeline is buried in a ground water level layer and penetrates through the walls of outer enclosing structures such as buildings and structures, a wall bushing waterproof sealing structure shown in a national standard drawing set 02S404 flexible waterproof bushing B type is usually adopted to achieve a preset waterproof sealing effect, and the wall bushing waterproof sealing structure has limitation in use for site environments accompanied with settlement deformation of the buildings and the structures and working vibration, distortion and the like of the medium pipeline. The most perfect wall bushing flexible waterproof sealing structure adopted by the national standard drawing set 02S404 flexible waterproof bushing B type is shown in figure 1A, and is used for sealing a medium pipeline 1 penetrating through a wall body 01 and comprises a wall bushing 2 sleeved with the medium pipeline 1 and sealing components 3 arranged on the water facing side and the water backing side between the medium pipeline 1 and the wall bushing 2 respectively, wherein the wall bushing 2 is pre-embedded in the wall body 01, the sealing component on the water facing side is a first sealing component, the first sealing component is subjected to caulking treatment by adopting a sealing material and simple sealing paste 36 (rigid material), and an inner retainer ring 24 welded inside the wall bushing 2 is used for unidirectional constraint positioning plugging, and the sealing structure is a rigid sealing structure; the sealing assembly on the back water surface is a second sealing assembly, the second sealing assembly is obtained by adopting a rubber sealing ring 31 (made of flexible material) and plugging and pre-tightening an inner retainer ring 24 and an L-shaped flange gland 35 which are welded inside the wall bushing 2, and the sealing structure is a flexible sealing structure; wall bushing 2 is equipped with middle part wing crown plate 22 and both sides tip wing crown plate 23, and middle part wing crown plate 22 buries underground in wall body 01, and both sides tip wing crown plate 23 protrusion wall body, current structure exist following not enough:
(1) as shown in fig. 1A, the first and second sealing assemblies of the structure adopt different sealing modes and sealing materials, so that the two side supporting points of the medium pipeline 1 inside the wall bushing 2 are stressed unevenly, and the rigid sealing material cannot absorb reasonable deformation displacement and working vibration of the medium pipeline, is more easily damaged and influences the sealing structure effect.
(2) As shown in fig. 1B, the wing ring plates 23 at the two sides of the wall bushing 2 protrude out of the wall 01, the arrangement is not convenient for formwork support in the construction process, the wall bushing 2 cannot be effectively connected and fixed with the structural steel bars of the wall 01 as a whole, and the wing ring plates 23 at the two sides of the wall bushing 2 cannot be tightly fixed with the concrete of the wall 01, so that the connection strength between the wall bushing 2 and the wall 01 as a whole is affected. Generally, the metal wall bushing and the concrete are made of two different materials, and the two materials have different physical expansion coefficients, so that expansion leakage gaps between the two materials are inevitably generated. It is difficult to ensure the waterproof sealing function only by the middle wing ring plate 22 under the conditions of high ground water level and high osmotic pressure.
(4) As shown in fig. 1D, the first sealing assembly between the medium pipeline 1 and the wall bushing 2 on the upstream side of the wall 01 is sealed by the rigid sealant 36, and when the wall 01 or the medium pipeline 2 is normally displaced and deformed, and the rigid sealing material is subjected to the interaction between the wall bushing 2 and the medium pipeline 1, the generated destructive structural gap makes the sealing assembly lose its function, and at this time, only the second sealing assembly is left, which is difficult to be applied to the waterproof sealing function under the conditions of high groundwater level and large osmotic pressure.
(5) As shown in fig. 1B, the conventional inner retainer rings 24 are all disposed inside the wall bushing 2, and both sides of the inner retainer rings 24 are fully welded to the inner side of the wall bushing 2, when the pipe diameter of the wall bushing 2 is small, the processing difficulty is high, even the inner side cannot be welded, and if the outer side is welded, the deformation space and the use effect of the flexible sealing material are directly affected; when the first sealing assembly fails, because the two inner retainer rings 24 welded and fixed on the sleeve are shielded, the damaged first rigid sealing material cannot be repaired from the back surface, only the outer side of the building wall body can be excavated, the sealing material is replaced, the waterproof structure and the heat insulation structure on the outer side of the outer enclosure wall body cannot be damaged in the repairing process, the repairing difficulty is increased, and the repairing cost is increased.
(6) The existing first rigid sealing material is arranged on the outer upstream surface of the wall body 01 (see fig. 1D), and cannot play a role in resisting shock waves in wartime specified in the design specifications of civil air defense basements and meet the overall strength requirement after the wall body is perforated.
(7) As shown in fig. 1C, in the L-shaped flange gland 35 of the second conventional flexible sealing structure, during the pre-tightening construction, the pre-tightening force of the bolt group acting on the L-shaped flange gland 35 acts on the sealing ring, and an assembly pre-tightening space is left between the L-shaped flange gland 35 and the end wing ring plate 23 of the wall bushing 2 to adjust the pre-tightening amount of the sealing ring, so that the bolt group is easily loosened during the long-term working vibration of the medium pipe 1. If the L-shaped flange cover 35 and the end wing ring plate 23 of the wall bushing 2 are directly tightly attached and locked, although the fastening and self-locking function of the bolt set can be realized, the reasonable pre-tightening force and the sealing deformation of the sealing ring cannot be controlled due to the lack of an assembly pre-tightening space between the L-shaped flange cover 35 and the end wing ring plate 23 of the wall bushing 2, so that the flexible sealing effect is lost.
Disclosure of Invention
In view of the above disadvantages, the present invention aims to provide a flexible waterproof sealing structure for a wall bushing, which is suitable for the application occasions where the medium pipeline in the underground water layer passes through the building and the external enclosure wall of the building.
The technical scheme adopted by the invention is as follows:
the utility model provides a flexible waterproof sealing structure of wall bushing, a medium pipeline for passing the wall body seals, including the wall bushing that the cover was equipped with medium pipeline and set up the flexible sealing structure who has the pretightning force between wall bushing and medium pipeline, this flexible sealing structure includes non-fixed pre-compaction fender ring (33), sealing washer (31) and tip baffle (32), sealing washer (31) are located between wall bushing and the medium pipeline, be equipped with the multiunit, every group includes two at least, keep off ring (33) by non-fixed pre-compaction between every group sealing washer and separate, tip baffle (32) are fixed respectively in the upstream face and the surface of a water both sides of wall bushing (2), sealing washer (31) form static seal with the sealed face of wall bushing and medium pipeline respectively.
In the flexible waterproof sealing structure of the wall bushing, the wall bushing (2) is provided with a middle wing annular plate (22) and an end wing annular plate (23) which are pre-embedded in a wall body (01), and the end face of the outer side of the end wing annular plate (23) is positioned on the same plane with the surface of the wall body (01).
In the flexible waterproof sealing structure of the wall bushing, the end wing ring plate (23) on the water facing side is tightly attached to the end baffle plate (32) on the water facing side and is fixed by welding; the end wing ring plate (23) on the back water surface side is tightly attached to the end baffle plate (32) on the back water surface side and is locked and fixed through the pre-pressing fastening bolt group.
The sealing rings are all in an extrusion stress state, and the compression amount of the sealing rings is 20% of the horizontal total length of the sealing rings.
In the flexible waterproof sealing structure of the wall bushing, a radial distance is reserved between the end baffle (32) and the medium pipeline (1), and the distance is a preset comprehensive deformation gap; radial intervals are arranged between the pre-pressing baffle ring (33) and the inner wall of the wall bushing (2) and between the pre-pressing baffle ring and the outer wall of the medium pipeline (1).
In the flexible waterproof sealing structure of the wall bushing, the sealing rings (31) are rubber sealing rings, and two groups of sealing rings are arranged, namely a water-facing surface sealing ring (311) and a back water surface sealing ring (313); the two pre-pressing baffle rings (33) are respectively a water-facing axial pre-pressing baffle ring (331) and a water-backing axial pre-pressing baffle ring (333), one end of the water-backing axial pre-pressing baffle ring (333) is contacted with the end baffle plate (32) on the water-backing side, and the water-facing sealing ring (311) is contacted with the end baffle plate (32) on the water-facing side; preferably, the seal rings are under compressive stress and have a horizontal compression of 20% of the total length of all seal rings.
In the flexible waterproof sealing structure of the wall bushing, the sealing rings (31) are rubber sealing rings, and three groups of sealing rings are arranged, namely a water facing surface sealing ring (311), a neutral surface sealing ring (312) and a back water surface sealing ring (313); the number of the pre-pressing retaining rings (33) is three, and the three pre-pressing retaining rings are an upstream axial pre-pressing retaining ring (331), a neutral axial pre-pressing retaining ring (332) and a back water axial pre-pressing retaining ring (333); one end of a back water surface axial prepressing baffle ring (333) is contacted with the back water surface prepressing baffle (322), a water facing surface sealing ring (311) is contacted with a water facing surface sealing baffle (321), and a neutral surface sealing ring (312) is positioned in the middle of the wall bushing (2); preferably, the seal rings are under compressive stress and have a horizontal compression of 20% of the total length of all seal rings.
In the flexible waterproof sealing structure of the wall bushing, the vertical and horizontal conventional distribution ribs (012) are cut off at the position of the embedded wall bushing (2) of the wall body (01) to form a reserved wall bushing hole (011), and reinforcing ribs (013) are arranged around the reserved wall bushing hole (011) at an angle to the conventional distribution ribs (012); preferably, the included angle between the regular distribution ribs (012) and the reinforcing ribs (013) is 45 degrees.
The invention also provides a construction method of the flexible waterproof sealing structure of the wall bushing, which comprises the following steps:
the method comprises the following steps: embedding a wall bushing (2) at a preset position of a wall body (01) in advance, so that a middle wing ring plate (22) and an end wing ring plate (23) of the wall bushing (2) are embedded in the wall body (01), and the surfaces of the end wing ring plate (23) and the wall body (01) are in the same plane;
step two: the penetrating end of a medium pipeline (1) is sequentially sleeved with an end baffle plate (32) on the back water surface side, a pre-pressing baffle ring (33) and a sealing ring (31) in a penetrating mode, the medium pipeline (1) penetrates into a wall penetrating sleeve (2) from the back water surface side of a wall body (01), the medium pipeline (1) is coaxial with the wall penetrating sleeve (2), the medium pipeline (1) is fixed after reaching a preset position, the end baffle plate (32) on the water facing side penetrates and sleeves the medium pipeline (1) on the water facing side, and is welded and fixed on an end wing ring plate (23) on the water facing side.
Step three: and parts penetrating into the upper back surface side of the medium pipeline (1) are sequentially extruded and pushed into the wall bushing (2), the length of the final prepressing baffle ring (33) exposed out of the wall bushing (2) is the sum of the horizontal precompression amount of all the sealing rings, the end baffle plate (32) on the back surface side and the end wing ring plate (23) on the back surface side are fastened in place through the prepressing fastening bolt group (34), and the fastening torque of the prepressing fastening bolt group (34) is met.
In the second step of the construction method of the flexible waterproof sealing structure of the wall bushing, the medium pipeline (1) is penetrated into the wall bushing (2) from the back water surface side of the wall body (01) by adopting a slideway method, and the construction method specifically comprises the following steps:
after the medium pipeline (1) is adjusted and positioned, an arc-shaped sliding plate matched with the radian of the medium pipeline (1) is arranged below the medium pipeline (1), a set of sliding device is arranged at the front end of the medium pipeline (1), and then the medium pipeline (1) is pulled in place by using a chain block.
By adopting the technical scheme, the invention has the following characteristics and beneficial effects:
1) according to the invention, the balanced flexible sealing components are adopted on two sides of the flexible waterproof sleeve, so that the whole wall-penetrating medium pipeline is stressed in the sleeve in a balanced manner, and the service life of the wall-penetrating sleeve sealing material is prolonged;
2) adjusting the position relation between the wing ring plates at the two end parts of the wall bushing and the wall body, so that the wing ring plates at the two end parts are embedded into the wall body to form a mechanical labyrinth type sealing structure, and simultaneously improving the connection strength between the wall bushing and the wall body;
3) the structure and the installation mode of the inner retainer ring 24 of the wall-penetrating sleeve are changed, the welding fixing mode of the original retainer ring is changed into a non-welding sliding fit mode of a prepressing retainer ring, the first sealing assembly is changed into a flexible sealing structure formed by the axial prepressing retainer ring on the upstream face, a sealing ring and the sealing baffle on the upstream face, the newly formed sealing baffle plays the effect of a high-strength anti-force sheet required by civil air defense standards, the flange gland structure of the second sealing assembly is changed, the anti-support force of a prepressing fastening bolt group acting on a flange gland acts on a wing ring plate rigid material of the sleeve, the self-locking function of a bolt is really realized, the pre-tightening force of the sealing material is adjusted by adjusting the length size of the prepressing retainer ring of the second flexible sealing structure, and meanwhile, the assembly gap space between a medium pipeline and the wall-penetrating sleeve is enlarged by changing the welding type inner retainer ring into the non, the construction is convenient, the sealing material can be removed and replaced on the back water surface during maintenance, and the technical problem that the sealing material can only be replaced from the upstream face in the prior art is thoroughly solved;
4) the sealing assemblies between the medium pipelines and the wall-penetrating casing adopt flexible sealing structures with pretightening force, the sealing materials adopt flexible sealing rings and are separated into a plurality of groups by non-fixed prepressing baffle rings, and the sealing materials in each sealing assembly are in a pretightening deformation state under the combined action of the double-layer sealing baffle plates so as to meet the waterproof sealing effect under the extreme conditions of high underground water level and high osmotic pressure.
Drawings
Fig. 1A is a schematic overall structural view of a conventional waterproof and sealing structure of a wall bushing;
FIG. 1B is a schematic structural diagram of a prior art retaining ring welded inside a wall bushing;
FIG. 1C is a schematic view of a connection structure of a flange gland and a bolt set in a conventional waterproof sealing structure of a wall bushing;
FIG. 1D is a schematic view of a rigid upstream face seal structure in a conventional waterproof seal structure of a wall bushing;
FIG. 2A is a schematic structural diagram of a first embodiment of the flexible waterproof sealing structure of the wall bushing of the invention;
FIG. 2B is a schematic view of the assembly of the media conduit of the present invention as it traverses a wall bushing;
FIG. 2C is a schematic view of the wall bushing and wall position of the present invention;
FIG. 2D is a schematic diagram of a rigid contact fastening structure of a pre-compression flange gland (a pre-compression baffle plate on the back surface) and a pre-compression bolt set of a wall bushing according to the present invention;
FIG. 2E is a schematic view of the welding structure of the upstream sealing baffle (resisting sheet) and the wall bushing of the present invention;
FIG. 2F is a schematic view of the reinforcement of the wall structure around the wall bushing according to the present invention;
fig. 3 is a schematic structural diagram of a second embodiment of the flexible waterproof sealing structure of the wall bushing of the invention.
The reference numbers in the figures denote:
01-wall body, 011-reserved through-wall holes, 012-conventional distribution ribs and 013-reinforcing ribs;
1-a media conduit;
2-wall bushing, 21-pipe body, 22-middle wing ring plate, 23-end wing ring plate, 231-upstream end wing ring plate and 232-back-water end wing ring plate; 24-an inner retainer ring;
3-sealing component, 31-sealing ring, 311-upstream surface sealing ring, 312-neutral surface sealing ring, 313-backside surface sealing ring; 32-end baffle, 321-upstream surface sealing baffle and 322-back surface prepressing baffle; 33-prepressing baffle ring, 331-upstream axial prepressing baffle ring, 332-neutral axial prepressing baffle ring, 333-downstream axial prepressing baffle ring; 34-prepressing fastening bolt group; 35-L-shaped flange gland; 36-sealing paste;
f 1-assembly clearance of the medium pipeline in the original structure, f 2-assembly clearance of the medium pipeline in the structure of the invention, and H-assembly pre-tightening quantity positioning value of the L-shaped flange gland in the original structure.
Detailed Description
In order to solve the defects that the existing wall bushing waterproof sealing structure is unbalanced in stress, insufficient in connection strength with a wall body, complex in part processing, poor in sealing property, large in construction difficulty, high in maintenance cost, difficult to be suitable for building occasions with high underground water level and high osmotic pressure and the like, the invention provides a wall bushing flexible waterproof sealing structure and a construction method, wherein the wall bushing flexible waterproof sealing structure is suitable for being positioned in an underground water level layer and high in osmotic pressure, is used for sealing a medium pipeline sleeved in the wall body and comprises a wall bushing sleeved with the medium pipeline and a sealing assembly arranged between the wall bushing and the medium pipeline, and the wall bushing flexible waterproof sealing structure comprises a first sealing body, a second sealing body and a sealing assembly, wherein the first:
the sealing assembly comprises a flexible sealing structure with pretightening force, and comprises non-fixed prepressing baffle rings, sealing rings and end baffle plates, wherein the sealing rings are provided with a plurality of groups, each group comprises at least two sealing rings, the sealing rings of each group are separated by the non-fixed prepressing baffle rings, the end baffle plates are fixed at the two sides of the upstream surface and the downstream surface of the wall bushing, and the sealing rings and the prepressing baffle rings are tightly pressed between the wall bushing and the medium pipeline, so that the sealing rings are respectively pressed and contacted with the sealing surfaces of the wall bushing and the medium pipeline to form static sealing, a radial gap is reserved between the end baffle plates and the medium pipeline, the radial gap is a preset comprehensive deformation gap (the comprehensive deformation gap is a multi-factor comprehensive accumulated value and comprises a gap generated by settlement, deformation and distortion of the wall bushing and a gap stacking value generated by working vibration, pressure oscillation, water hammer phenomenon and the like of, the superimposed value can be estimated by comprehensive analysis calculation). This structure adopts the balanced flexible seal assembly in both sides for the medium pipeline is in the wall bushing both sides strong point atress balanced, and the flexible fulcrum of both sides adsorbs the vibration energy simultaneously, and the damping effect is outstanding, and sealing material (sealing washer) forms sealed stress under the effect of pretension in the cavity of totally enclosed, prolongs seal assembly's life simultaneously.
The position relation between the wing ring plates at the two sides of the wall bushing and the wall body is adjusted, so that the wing ring plates at the two sides are embedded into the wall body to form a mechanical labyrinth type sealing structure, and the sealing effect and the connection strength of the wall bushing and the wall body are improved.
The structure and the installation mode of the inner retainer ring of the wall bushing are changed, the original welding and fixing mode of the inner retainer ring is changed into a non-welding sliding fit mode of a pre-pressing retainer ring, and meanwhile, the assembly space between the medium pipeline and the wall bushing is increased, so that the construction and the maintenance are more convenient, and the technical problem that the maintenance can be carried out only by excavating on the upstream face and damaging a waterproof layer and a heat insulation layer of a building structure is solved;
the sealing assemblies between the medium pipeline and the wall bushing adopt flexible sealing structures with pretightening force, the flexible sealing materials adopt O-shaped sealing ring sets and are separated into a plurality of groups by non-fixed prepressing baffle rings, and each sealing assembly is a flexible sealing structure with pretightening force so as to meet the waterproof sealing effect of various field extreme conditions of high underground water level and large osmotic pressure.
The flexible waterproof sealing structure of the wall bushing and the construction method thereof according to the present invention will be described in detail with reference to the following embodiments and accompanying drawings.
The first embodiment is as follows:
in the first embodiment shown in fig. 2A, the flexible waterproof sealing structure of a wall bushing is used for sealing a medium pipeline 1 sleeved in a wall 01, and includes a wall bushing 2 and a sealing assembly 3, the medium pipeline 1 is sleeved in the wall bushing 2, and the sealing assembly 3 is disposed between the wall bushing 2 and the medium pipeline 1, where:
the existing wall bushing structure is shown in fig. 1B, two inner check rings 24 are welded inside a pipe body of the wall bushing, the machining and manufacturing process of the part structure is complex, when the pipe diameter specification of the wall bushing is small, inner side welding machining of the inner check rings cannot be carried out, in the structure, the installation gap of a medium pipeline 1 is f1, and the construction and assembly difficulty is large. Referring to fig. 2B, in this embodiment, the inner retainer of the wall bushing 2 is changed to an independent non-fixed pre-pressing retainer 33, the pre-pressing retainer 33 is installed after the medium pipeline 1 passes through the wall bushing 2, which plays a role of the inner retainer of the existing waterproof sealing structure, and meanwhile, in the process of installing the medium pipeline 1 passing through the wall bushing 2, the assembly gap between the medium pipeline 1 and the wall bushing is increased from the original f1 to f2, and the structure not only makes the parts simple to process, but also greatly reduces the installation difficulty.
The outer wall of the existing wall bushing is welded with a middle wing ring plate 22 and two end wing ring plates 23, and the relative positions of the wing ring plates and the wall body are shown in fig. 1B. Because the wall bushing 2 and the wall body 01 (concrete) belong to different types of building materials, the difference of thermal expansion coefficients is large, a leakage gap is generated between the wall bushing 2 and the wall body 01, and the waterproof sealing effect cannot be ensured only by the middle wing ring plate 22 wrapped by the wall body when the underground water level is high and the permeation pressure is large. In order to prevent the leakage gap between the two plates from leaking, in this embodiment, the end wing ring plate 23 of the wall bushing 2 is retracted into the wall 01, see fig. 2C, the outer end surface of the end wing ring plate 23 is in the same plane as the surface of the wall, the middle wing ring plate 22 plays a role of "water stop plate" in architectural sealing, when the end wing ring plate 23 is retracted into the wall, a "labyrinth structure" in mechanical sealing is formed with the middle wing ring plate 22, even if there is a gap between the wing ring plate and the wall 01, the leaking water is to penetrate to the side of the back water surface (in a general building room), the leaking water needs to cross each wing ring plate in sequence, and every time when passing through one wing ring plate, the leaking water needs to pass through a 90 ° climbing process, which rapidly reduces the penetrating pressure to play a role of water stopping and water stopping, the labyrinth structure formed by the plurality of wing ring plates consumes the penetrating pressure of the leaking water in sequence, so that the leakage water cannot pass through the last defense line and further permeate into the interior of the building. The middle wing ring plate 22 is located in the middle of the pipe body 21, the end wing ring plates 23 are respectively arranged on the upstream surface and the downstream surface to form an upstream end wing ring plate 231 and a downstream end wing ring plate 232, the two end wing ring plates are symmetrically arranged at the two ends of the pipe body 21, and the end wing ring plates 23 can also play a role in fixing the sealing component 3 and the end baffle 32. Preferably, the outer end face of the end wing ring plate 23 and the surface of the wall body are located on the same plane, so that the wing ring plate of the wall bushing 2 is effectively connected and fixed with the structural steel bars of the wall body 01, the sealing effect and the connection strength of the wall bushing 2 and the wall body 01 are increased, the anti-osmotic pressure capability of an underground water level layer is improved, and meanwhile, the formwork support of the wall body 01 in the pouring construction process is facilitated.
The construction of the existing embedded through-wall casing 2 is usually carried out by breaking off the steel bars at the wall body position of the embedded through-wall casing 2 to form the reserved through-wall hole 011, which can cause the local strength reduction of the reserved through-wall hole 011 of the wall body 01 and even cause the earthquake-resistant parameter of the wall body 01 to be out of the requirement, therefore, the invention adopts the structure reinforcement measure according to the factors of the position of the reserved through-wall hole 011, the size of the casing specification, the damage degree of the wall body 01 and the like to ensure that the reserved through-wall hole 011 can not reduce the strength performance of the original wall body, see fig. 2F, the concrete reinforcement structure is that the number of broken bars is reduced as much as possible on the basis of the conventional distributed ribs 012 in the vertical and horizontal directions of the wall body 01, and reinforcing ribs 013 are arranged around the reserved through-wall hole 011 at an angle to the conventional distributed ribs 012, preferably, the included angle between, the local strength of the wall 01 is compensated by this structure.
When the wall bushing 2 is manufactured, all the wing ring plates and the pipe body 21 are fully welded. Wall bushing 2 cooperates the structure reinforcement work when 01 pre-buried at the wall body, and concrete pre-buried wall bushing 2's process is as follows: firstly, welding and reinforcing a wing ring plate of a wall bushing 2 and conventional distributed ribs 012 of a wall body 01, then laying reinforcing ribs 013, and performing support of a pouring template (as the length of the wall bushing 2 is equal to the thickness of the wall body 01, the supported template plays a role in secondarily reinforcing the wall bushing 2); secondly, pouring the wall body 01, wherein sawdust or plastic bolts can be adopted for plugging in order to ensure that screw holes formed in the end wing ring plate 23 are not plugged by concrete in the pouring process; after the curing period is finished after the pouring is finished, the template is removed, and the screw holes of the end wing ring plate 23 of the wall bushing 2 are cleaned and exposed. Because the length of the wall bushing 2 is equal to the thickness of the wall body 01, after the wall bushing 2 is poured, the end face of the end wing ring plate 23 of the wall bushing 2 is in the same plane with the wall surface of the wall body 01.
Referring to fig. 2A, in this embodiment, the sealing assembly 3 includes two flexible sealing assemblies that are arranged in a balanced manner, that is, a first sealing assembly located on the upstream side of the wall 01 and a second sealing assembly located on the downstream side of the wall 01, and each of the two sealing assemblies includes a plurality of sealing rings 31 having a pre-tightening force and a corresponding end baffle 32 (upstream side sealing baffle 321 or downstream side pre-tightening baffle 322), and the two sealing assemblies are separated by a pre-tightening baffle ring 33 that is sleeved on the medium pipeline 1, preferably, radial margins (comprehensive deformation gaps) are left between the pre-tightening baffle ring 33 and the inner wall of the wall-penetrating sleeve 2 and between the pre-tightening baffle ring 33 and the outer wall of the medium pipeline 1, so that the pre-tightening baffle ring 33 can freely move along the medium pipeline; the upstream face seal baffle 321 is welded and fixed on the upstream face end wing ring plate 231 of the wall bushing 2, and plays a role of restraining the upstream face seal ring 311 in the axial direction, so that the open unconstrained state (see fig. 1C) of the existing structure is changed, and the welding mode is preferably adopted, because the non-fixed prepressing baffle ring 33 structure changes the original mode of maintaining from the upstream face, and the upstream face seal baffle 321 is not required to be removed in the later stage. A radial margin (i.e., a comprehensive deformation gap) is left between the end baffle 32 and the medium pipeline 1, so that the vibration of the medium pipeline 1 and the comprehensive deformation generated by the building are absorbed by the flexible sealing material, the flexible sealing material is prevented from directly acting on the rigid structure (the sealing baffle 321), and similarly, a comprehensive deformation gap is left between the back water surface pre-pressing baffle 322 and the medium pipeline 1. Preferably, the upstream face sealing baffle 321 is tightly attached to the upstream face end wing ring plate 231 and fixed by electric welding, the back face pre-pressing baffle 322 is a pre-pressing flange gland, and the pre-pressing flange gland is tightly fastened and locked with the back face end wing ring plate 232 by a pre-pressing fastening bolt group 34.
Specifically, in this embodiment, the seal rings 31 are rubber seal rings, and there are two groups, namely, a water-facing seal ring 311 and a back-water seal ring 313; two pre-pressing retaining rings 33 are arranged, namely a water-facing surface axial pre-pressing retaining ring 331 and a back-water surface axial pre-pressing retaining ring 333, wherein the water-facing surface sealing ring 311 is positioned between the water-facing surface pre-pressing retaining ring 331 and the water-facing surface sealing baffle 321, and the back-water surface sealing ring 313 is positioned between the back-water surface axial pre-pressing retaining ring 333 and the water-facing surface axial pre-pressing retaining ring 331; preferably, the compression of the seal rings should be 20% of the total length of all seal rings. Referring to fig. 2B, the specific construction process of this embodiment is as follows:
firstly, leveling, aligning and leveling a medium pipeline 1 according to a preset position to ensure the coaxiality with a wall bushing 2, wherein the medium pipeline 1 penetrates through the wall bushing 2, after the fit clearance (radial direction) between the medium pipeline 1 and the wall bushing 2 is adjusted after the medium pipeline 1 is in place, a water-facing surface sealing baffle 321 and a water-facing surface end wing ring plate 231 are welded (full welding is not needed, welding is strictly forbidden after the sealing material is installed, otherwise, the sealing material has the possibility of being damaged); then, the upstream surface sealing ring 311, the upstream surface axial pre-pressing retaining ring 331, the back surface sealing ring 313 and the back surface axial pre-pressing retaining ring 333 which are manufactured according to the design requirements are tightly attached and pushed into the pipe body 21 of the wall bushing 2, the pre-pressing set bolt group 34 penetrates through the back surface pre-pressing retaining plate 322 and is screwed into the screw hole of the back surface end part wing ring plate 232, the back surface pre-pressing retaining plate 322 acts on the back surface axial pre-pressing retaining ring 333 through the fastening force of the pre-pressing set bolt group 34 to generate axial thrust and acts on the back surface sealing ring 313, axial thrust is transmitted to the upstream face sealing ring 311 while the back face sealing ring 313 forms pretightening deformation, and finally under the reaction thrust of the upstream face sealing baffle 321, the sealing ring 31 forms internal stress of the sealing ring in a closed cavity according to a designed sealing ring precompression value, and a sealing gap is sealed to form a waterproof sealing effect. The sealing ring 31 generates an axial acting force under the extrusion action of the back water surface prepressing baffle 322, the prepressing baffle ring 33 and the upstream surface sealing baffle 321, preferably, the prepressing displacement amount of the sealing ring in the horizontal direction is 20% of the horizontal length of the sealing ring, and the sealing material generates an all-dimensional sealing stress in the cavity, so that the sealing ring 31 is in close contact with the medium pipeline 1 and the wall bushing 2, the requirement of waterproof sealing is met, and after all installation projects are completed, the upstream surface sealing baffle 321 (preferably, a force resisting sheet) is subjected to corrosion prevention treatment.
Referring to fig. 1C, the existing L-shaped flange gland 35 is a welding assembly, that is, the short pipe is vertically welded on the basis of the conventional flange gland, and in the welding process, due to the deformation caused by the welding stress, the error of the coaxiality between the axis of the inner hole of the short pipe welded on the flange gland and the axis of the pre-tightening bolt set 34 and the error of the verticality between the action surface of the flange gland and the axis of the short pipe cannot be guaranteed, both the errors directly or indirectly affect the magnitude of the comprehensive displacement value of the sealing structure, and if the inner diameter of the short pipe is designed according to the assembly gap, the dimensional accuracy of the sealing gap cannot be guaranteed; if the design is carried out according to the sealing clearance, the assembly construction requirement is difficult to guarantee, more importantly, the axial length dimension error generated by the processing difficulty of the existing inner retainer ring 24 is difficult to determine and guarantee the assembly pretension positioning value H (namely the length value between the contact surface of the short pipe of the L-shaped flange gland 35 and the sealing ring 31 and the front end of the end wing ring plate 232 at the back water surface), the assembly pretension positioning value H can be obtained by calculating the precompression value of the sealing material in the sealing principle, but the control difficulty is higher due to the accumulation of various errors in the actual construction, even if the assembly pretension positioning value H is guaranteed by related processes, but the positioning effect of the pretension compression amount can only be achieved because the current wrong fastening mode cannot achieve the fastening and locking effect, because the reaction force acting in the direction of the bolt comes from the flexible sealing material instead of a rigid object, and the bolt fastening torque cannot be achieved, the self-locking state of the thread pair is achieved, the nut is in a floating state, under the vibration of the medium pipeline 1 and the wall body 01, the nut and the thread generate loosening displacement, the pre-tightening compression quantity value is set, the long-term guarantee can not be achieved, and the waterproof sealing effect is lost. In this embodiment, a non-welding split component (i.e. a combination of a pre-pressed flange gland of the backing surface and an axial pre-pressed retaining ring 333 of the backing surface) is used instead of a welding assembly, and referring to fig. 2D, the sealing structure has the following features:
1) the processing technology is simplified, the standard flange plate can be used for remanufacturing the processing technology, the product quality can be guaranteed, the standardization and the marketization are facilitated, the original structure mode of the protruding wall body is changed into the mode of being pasted with the wall body, and the attractiveness is good.
2) By utilizing the size of the prepressing baffle ring 33 which can be cut on site, the length of the prepressing baffle ring can be accurately designed by accumulating various field machining errors, field building wall errors and various product errors, the precompression quantity of the sealing material is ensured, and the sealing waterproof sealing effect is further ensured.
3) Due to the accurate configuration of the pre-pressing retaining ring 33, the pre-pressing flange gland can act on the end wing ring plate 23 of the rigid wall bushing, the pre-pressing fixing bolt group 34 is fastened in place, the fastening torque can meet the self-locking requirement of a thread pair, the original uncontrollable assembling pre-tightening amount positioning value H does not need to be controlled, and the field assembling construction is very simple.
4) The fastening principle of mechanics is applied, the floating fastening mode of the original nut is changed into the rigid contact bolt fastening state, so that the bolt group is ensured to be in a self-locking state for a long time, the fastening in place is really realized, the looseness is not easy to occur, and the looseness phenomenon in the use process is avoided.
5) The improved flange plate (the back water surface prepressing baffle 322) and the back water surface axial prepressing baffle ring 333 are arranged in a split mode, the product processing difficulty and the processing precision are reduced, various processing errors of the original short pipe do not influence the comprehensive deformation clearance value any more, the value between the back water surface prepressing flange gland and the medium pipeline 1 can be designed according to the comprehensive deformation clearance, and the assembly construction is convenient.
Referring to fig. 1D, the sealing structure of the existing sealing assembly of the wall bushing 2 on the upstream side is made of rigid materials, flexible materials are not used, fastening and pre-tightening are not needed, and the upstream side is not provided with the upstream sealing baffle 321, so that after the wall 01 or the medium pipeline 1 is displaced and deformed, the rigid sealing material is interacted between the wall bushing 2 and the medium pipeline 1, the generated structural gap makes the sealing assembly lose its effect, and at this time, only the second sealing assembly on the downstream side is difficult to be applied to the occasions with high underground water level and high osmotic pressure. In order to solve the above problems, the structure adopts a flexible sealing assembly, that is, a first flexible sealing assembly with pretightening force is formed by matching the upstream face axial prepressing baffle ring 331, the upstream face sealing ring 311 and the upstream face sealing baffle 321, and referring to fig. 2E, the flexible sealing assembly has the following characteristics;
1) based on the building principle of a flexible sealing material acting cavity in the sealing science, the pre-tightening stress requirement is met;
2) by applying the Pascal communicator principle of hydraulic transmission, the permeation pressure of the underground water level acts on the upstream face sealing ring 311 through the comprehensive displacement gap between the upstream face sealing baffle 321 and the medium pipeline 1, so that the pressure born by the sealing material is greatly reduced (the function of a 'pressure reducing pore plate' in the architectural water supply and drainage profession is achieved);
3) the structure plays a role of a 'force resisting sheet' on the upstream face sealing baffle 321 by combining the design specification of the civil air defense basement to have the function of resisting the wartime shock wave when passing through the underground related pipelines with the preset function. The equal strength of the pipeline passing through part and the outer protection structure is ensured, and the service life of the sealing assembly is prolonged.
Specifically, the flexible waterproof sealing structure of the wall bushing bears the action direction of the groundwater level layer and the shock wave, i.e. the upstream face sealing baffle 321 adopts a resistance sheet, preferably, the resistance sheet is a steel plate, and the resistance sheet is used for resisting the action force of the groundwater level pressure and the shock wave, so as to ensure the sealing effect of the sealing assembly 3 and the mechanical strength of the flexible material.
Obviously, the wing ring plates of the wall bushing 2 are not limited to three due to the different thicknesses of the wall bodies 01; the sealing assembly 3 is not limited to two, and a plurality of groups of flexible sealing rings can be separately arranged by the axial pre-pressing retaining ring 33.
Example two:
in this embodiment, a second embodiment of the flexible waterproof sealing structure of the wall bushing is shown in fig. 3, and the structure is the same as the basic structure of the first embodiment and is a reinforced structure of the first embodiment, except that the sealing assembly 3 at least comprises two end flexible sealing assemblies (a first sealing assembly and a second sealing assembly) and a flexible sealing assembly (a third sealing assembly) which are uniformly arranged and are located in the middle. Specifically, the sealing assembly 3 is composed of three pre-pressing retaining rings 32 (i.e., an upstream axial pre-pressing retaining ring 331, a neutral axial pre-pressing retaining ring 332, and a downstream axial pre-pressing retaining ring 333), three sets of sealing rings 31 (i.e., an upstream sealing ring 311, a neutral sealing ring 312, and a downstream sealing ring 313) spaced by the three pre-pressing retaining rings 32, and end baffles 32 (an upstream sealing baffle 321 and a downstream flange gland 321) matched with the three pre-pressing retaining rings 32. Similarly, the upstream face sealing baffle 321 is tightly attached to the upstream face end wing ring plate 231 and is welded and fixed by an electric welding method, and the back face pre-pressing baffle 322 is tightly fastened and locked with the back face end wing ring plate 232 by the pre-pressing fastening bolt group 34, which is shown in the first embodiment.
The flexible waterproof sealing structure of the wall bushing in the embodiment has a bilateral balanced flexible sealing assembly and a neutral surface flexible sealing assembly at the same time, so that the sealing effect in a higher underground water level osmotic pressure state is ensured; meanwhile, the influence of vibration generated by the medium pipeline 1 on the wall bushing can be weakened by utilizing balanced bilateral supporting points; by utilizing the principle of minimum deformation of the neutral surface, the O-shaped sealing ring is arranged on the neutral surface (the middle part of the wall bushing 2), so that the waterproof sealing effect of the structure is ensured under the condition that the wall body 01 is allowed to bear larger load and generate larger distortion.
For the engineering application of the flexible waterproof sealing structure of the wall bushing, a cement plant in the east asia zone is taken as an example for explanation.
The cement plant is in an east Asia zone, the geological condition is complex, the underground water level is high, the osmotic pressure is high, and the ground gushing phenomenon is often accompanied, and the diameter DN of a medium pipeline of the existing industrial circulating water system is 150 mm. And the two meters underground are pre-arranged to penetrate through a structural enclosure wall close to the kiln head workshop of the crushing workshop, a plurality of grate cooler devices of the kiln head workshop are connected, the thickness of a wall body is 500mm, and the outer wall is of a reinforced concrete structure.
The medium pipeline of the cement plant has the following characteristics: the temperature change is obvious, and the pipeline has large radial and longitudinal distortion; the medium in the pipeline belongs to a forced circulation system and is accompanied by the phenomena of working vibration, pressure oscillation and water hammer knocking generated by a circulating pump. The medium pipeline is to penetrate through the peripheral retaining wall body 01 of the heavy industrial factory building and is close to the ore crushing workshop, the surrounding environment is severe, the geological condition is complex, and the phenomena of serious settlement and vibration deformation of the building are accompanied.
The characteristics determine that the reinforced type (see fig. 3) of the flexible waterproof sealing structure of the wall bushing needs to be selected, three sealing assemblies are adopted, and three pre-pressing retaining rings 33 are preliminarily set for pre-tightening.
Looking up a table according to a national standard map set 02S404 to obtain the zinc-plated DN150 steel pipe with the outer diameter of 159mm, the sleeve zinc-plated DN200 steel pipe with the outer diameter of 219mm and the wall thickness of 6.0 mm. According to the parameters, the following are obtained by calculation:
the inner diameter of the wall bushing 2 is equal to the outer diameter of the steel pipe-2 × the wall thickness is equal to 219-2 × 6.0, 207 (mm);
the assembly clearance is equal to the inner diameter of the wall bushing and the outer diameter of the medium pipeline is equal to 207 and 159 and is equal to 48 (mm);
the single-side sealing gap/2 48/2 24 (mm);
the maximum outer diameter of the axial pre-pressing retaining ring 33 is equal to the inner diameter- (3-10) of the wall bushing 2, 207-7 is equal to 200 (mm);
the minimum value of the outer diameter of the axial pre-pressing retaining ring 33 is equal to the inner diameter of the wall bushing 2+ (3-10) ═ 159+6 equal to 165 (mm);
considering the assembly clearance and the comprehensive deformation displacement clearance of the wall body 01 and the medium pipeline 1, a standard nylon pipe (made of nylon pipe material with the functions of rust prevention and corrosion prevention) with the outer diameter of 200mm and the inner diameter of 165mm is taken as the axial pre-pressing retaining ring 33.
The minimum value of the comprehensive deformation clearance is (the inner diameter of the sleeve pipe-the outer diameter of the pre-pressing retaining ring)/2 + (the inner diameter of the pre-pressing retaining ring-the outer diameter of the medium pipeline)/2 (207-
The length of the pre-pressing baffle ring 33 is determined according to the thickness of the wall body 01, the installation number of the sealing rings 31 and the preset compression value of the sealing rings 31, and length cutting is carried out on site.
In this case, three groups of O-shaped flexible sealing rings are adopted, the horizontal length of each group of flexible sealing rings is 28mm, and the theoretical horizontal lengths of the three groups of flexible sealing rings are 28 × 3 ═ 84(mm) (obtained by table lookup in national standard map set 02S 404).
The prepressing amount of the flexible sealing rings is equal to the sum of the theoretical horizontal lengths of the three groups of flexible sealing rings multiplied by 0.2, 84 multiplied by 0.2, 16.8 (mm);
the total length of the pre-pressing retaining ring 33 is (the thickness of the wall body is penetrated-the theoretical length of the whole flexible sealing material) + the pre-pressing amount of the sealing ring is (500-84) +22.8 is 438.8 (mm);
the length subsection proportion distribution principle of the prepressing baffle ring is 1:1:2, namely:
the lengths of the pre-pressing retaining rings are 438.8/4:438.8/4: 438.8/2: 109.7:219.4(mm), respectively.
Note that: in actual work, the distribution can also be carried out according to the proportion, but the total length after the segmentation is equal to the length before the splitting. Meanwhile, the sealing ring 31 is arranged inside the wall bushing 2 before being compressed, so that the sealing material is in a closed cavity, under the action of common pre-tightening of the upstream surface sealing baffle 321 and the downstream surface pre-pressing baffle 322, pre-tightening internal stress is formed in the closed cavity by the sealing material, a waterproof sealing effect is achieved, in the actual installation process, the length correction of the pre-pressing baffle ring 33 is carried out according to the actual size of the wall body 01 on site and various accumulated errors of product processing, and the length distribution principle and the final size of the wall bushing are finally determined.
The inside diameters of the back water surface pre-pressing baffle 322 and the upstream surface sealing baffle 321 are equal to the outside diameter of the medium pipeline and the comprehensive deformation clearance 159 and 6.5 are equal to 165.5(mm), and the values can be 170mm in a round way.
Because the field use quantity is less, the periphery of a construction field does not have external processing capacity, the method of field manufacture is adopted, the pipe body 21 of the wall bushing 2 adopts a standard DN200 common steel pipe, the wing ring plate is formed by welding a standard DN200 flange sheet and the pipe body 21 of the wall bushing 2, the upstream face sealing baffle 321 (a force resisting sheet) and the back face prepressing baffle 322 both adopt DN200 flange sheets and steel plates for field splicing, and the inner aperture is adjusted. The specification of the sealing rubber ring is selected according to the national standard drawing set 02S404, and the prepressing baffle ring 33 is formed by processing a standard nylon pipe purchased from outsourcing on site by using a cutting saw in an outsourcing mode.
The construction method of the flexible waterproof sealing structure of the wall bushing comprises the following steps:
step one, pre-burying the wall bushing 2 at a preset position of a wall body 01, so that a middle wing ring plate 22 and an end wing ring plate 23 of the wall bushing 2 are completely buried in the wall body 01, and the end wing ring plate 23 and the surface of the wall body 01 are in the same plane.
The method specifically comprises the following steps:
1) a reserved through-wall hole 011 is arranged at the position where the wall-through sleeve 2 is embedded in the wall body 01, and reinforcing ribs 013 (preferably 45 degrees) are distributed around the reserved through-wall hole 011 at an angle with the conventional distribution ribs 012 on the basis of the vertical and horizontal conventional distribution ribs 012 of the wall body 01;
2) binding or welding and fixing the middle wing ring plate 22 and the end wing ring plate 23 of the wall bushing 2 with structural steel bars (conventional distribution ribs 012) of the wall body 01;
3) and (4) carrying out template support and wall body pouring, and embedding the wall bushing 2 into the wall body 01.
And secondly, sequentially sleeving the penetrating end of the medium pipeline 1 on an end baffle 32 (a back water surface pre-pressing baffle 322), a pre-pressing baffle ring 33 and a sealing ring 31 on the back water surface side, penetrating the medium pipeline 1 into the wall bushing 2 from the back water surface side of the wall body 01, leveling, aligning and finding the elevation according to a preset position to enable the medium pipeline 1 to be coaxial with the wall bushing 2, fixing the medium pipeline 1 after reaching the preset position, sleeving the end baffle 32 (a water-facing surface sealing baffle 321 (a force resisting sheet)) on the water-facing surface side on the medium pipeline 1 from the water-facing surface side, and welding and fixing the end baffle 32 on the water-facing surface side on the end wing ring plate 23 (a water-facing surface end wing ring plate 231) (generally extending the indoor medium pipeline 1 to an outdoor position 1.5 m away from the peripheral protective structure wall).
Specifically, the method comprises the following steps (aiming at large-size medium pipelines):
1) placing the medium pipeline 1 on the ground of a position to be installed, and for medium pipelines with larger pipe diameters, adopting a hydraulic lifting device or a hydraulic jacking device to move horizontally to be lifted to the elevation of the installation position;
2) sequentially sleeving an end baffle 32 (a backwater surface prepressing baffle 322), a prepressing baffle ring 33 and a sealing ring 31 on the medium pipeline 1 on the backwater surface side, and after cleaning the interior of the wall bushing 2, penetrating the medium pipeline 1 into the wall bushing 2 from the backwater surface side of the wall body 01; for example, a slideway method can be adopted to penetrate a medium pipeline 1 into a wall bushing 2, namely after the medium pipeline 1 is adjusted and positioned, an arc-shaped sliding plate matched with the radian of the medium pipeline 1 is configured below the medium pipeline 1, a set of sliding devices (sliding shoes) are installed at the front end of the medium pipeline 1, and the medium pipeline is pulled in place by adopting a chain block, so that the medium pipeline 1 and the wall bushing 2 are coaxial; the water-facing side end baffle 32 is inserted through the medium pipe 1 on the water-facing side and welded and fixed to the water-facing side end wing ring plate 23.
3) The medium pipe 1 is fixed.
And step three, after welding the end baffle 32 (the upstream face sealing baffle 321 (a resistance piece)) on the upstream face side, sequentially extruding and pushing the parts sleeved on the medium pipeline 1 into the wall bushing 2, finally, fastening the back water face pre-pressing baffle 322 and the back water face end wing ring plate 232 in place through the pre-pressing fastening bolt group 34 by the length of the pre-pressing baffle ring 33 exposed out of the wall bushing 2 being the total horizontal pre-compression amount of each group of sealing rings, and meeting the fastening torque of the pre-pressing fastening bolt group 34 to finish the pre-tightening work of the sealing material. Preferably, the compression of the seal ring is 20% of the total horizontal length of the seal ring.
It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention, and that various equivalent modifications and changes may be made thereto without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a flexible waterproof sealing structure of wall bushing, a medium pipeline for passing the wall body seals, the wall bushing of medium pipeline is equipped with including the cover, a serial communication port, still including setting up the flexible sealing structure who has the pretightning force between wall bushing and medium pipeline, this structure includes non-fixed pre-compaction fender ring (33), sealing washer (31) and tip baffle (32), sealing washer (31) are located between wall bushing and the medium pipeline, be equipped with the multiunit, every group includes two at least, keep off ring (33) by non-fixed pre-compaction between every group sealing washer and separate, tip baffle (32) are fixed respectively in the upstream face and the surface of a water both sides of wall bushing (2), sealing washer (31) form static seal with the sealed face of wall bushing and medium pipeline respectively.
2. The flexible waterproof and sealing structure of the wall bushing according to claim 1, wherein the wall bushing (2) is provided with a middle wing ring plate (22) and an end wing ring plate (23) which are pre-embedded in the wall body (01), and the outer end face of the end wing ring plate (23) is in the same plane with the surface of the wall body (01).
3. The flexible waterproof sealing structure of the wall bushing according to claim 2, characterized in that the end wing ring plate (23) on the water-facing side is closely attached to the end baffle plate (32) on the water-facing side and fixed by welding; the end wing ring plate (23) on the back water surface side is tightly attached to the end baffle plate (32) on the back water surface side and is locked and fixed through the pre-pressing fastening bolt group.
4. The flexible waterproof and sealing structure of claim 1, wherein the sealing rings are under compressive stress, and the compression is 20% of the total horizontal length of the sealing rings.
5. A flexible waterproof and sealing structure of a wall bushing according to any one of claims 2 to 4, characterized in that the end baffle (32) is spaced from the medium pipe (1) in a radial direction by a predetermined combined deformation gap; radial intervals are arranged between the pre-pressing baffle ring (33) and the inner wall of the wall bushing (2) and between the pre-pressing baffle ring and the outer wall of the medium pipeline (1).
6. A flexible waterproof and sealing structure of a wall bushing according to any one of claims 1 to 5, wherein the sealing rings (31) are rubber sealing rings, and two groups of sealing rings are provided, namely a water-facing sealing ring (311) and a water-back sealing ring (313); the two pre-pressing retaining rings (33) are a water-facing axial pre-pressing retaining ring (331) and a water-backing axial pre-pressing retaining ring (333), one end of the water-backing axial pre-pressing retaining ring (333) is in contact with the end baffle (32) on the water-backing side, and the water-facing sealing ring (311) is in contact with the end baffle (32) on the water-facing side.
7. A flexible waterproof and sealing structure of a wall bushing according to any one of claims 1 to 5, characterized in that the sealing rings (31) are rubber sealing rings, and three groups of sealing rings are provided, namely a water-facing sealing ring (311), a neutral sealing ring (312) and a back water sealing ring (313); the number of the pre-pressing retaining rings (33) is three, and the three pre-pressing retaining rings are an upstream axial pre-pressing retaining ring (331), a neutral axial pre-pressing retaining ring (332) and a back water axial pre-pressing retaining ring (333); one end of the back water surface axial prepressing baffle ring (333) is contacted with the back water surface prepressing baffle (322), the upstream surface sealing ring (311) is contacted with the upstream surface sealing baffle (321), and the neutral surface sealing ring (312) is positioned in the middle of the wall bushing (2).
8. The flexible waterproof and sealing structure of the wall bushing according to any one of claims 1 to 7, characterized in that the position of the embedded wall bushing (2) of the wall body (01) is disconnected from the vertical and horizontal conventional distribution ribs (012) to form a reserved wall bushing hole (011), and reinforcing ribs (013) are arranged around the reserved wall bushing hole (011) at an angle to the conventional distribution ribs (012); preferably, the included angle between the regular distribution ribs (012) and the reinforcing ribs (013) is 45 degrees.
9. A construction method of the flexible waterproof and sealing structure of the wall bushing of any one of claims 2 to 8, comprising the following steps:
the method comprises the following steps: embedding a wall bushing (2) at a preset position of a wall body (01) in advance, so that a middle wing ring plate (22) and an end wing ring plate (23) of the wall bushing (2) are embedded in the wall body (01), and the surfaces of the end wing ring plate (23) and the wall body (01) are in the same plane;
step two: the penetrating end of a medium pipeline (1) is sequentially sleeved with an end baffle plate (32) on the back water surface side, a pre-pressing baffle ring (33) and a sealing ring (31) in a penetrating mode, the medium pipeline (1) penetrates into a wall penetrating sleeve (2) from the back water surface side of a wall body (01), the medium pipeline (1) is coaxial with the wall penetrating sleeve (2), the medium pipeline (1) is fixed after reaching a preset position, the end baffle plate (32) on the water facing side penetrates and sleeves the medium pipeline (1) on the water facing side, and is welded and fixed on an end wing ring plate (23) on the water facing side.
Step three: and parts penetrating into the upper back surface side of the medium pipeline (1) are sequentially extruded and pushed into the wall bushing (2), the length of the final prepressing baffle ring (33) exposed out of the wall bushing (2) is the sum of the horizontal precompression amount of all the sealing rings, the end baffle plate (32) on the back surface side and the end wing ring plate (23) on the back surface side are fastened in place through the prepressing fastening bolt group (34), and the fastening torque of the prepressing fastening bolt group (34) is met.
10. The construction method of the flexible waterproof and sealing structure of the wall bushing according to claim 9, wherein in the second step, the medium pipeline (1) is inserted into the wall bushing (2) from the side of the wall body (01) opposite to the water surface by a slideway method, which specifically comprises:
after the medium pipeline (1) is adjusted and positioned, an arc-shaped sliding plate matched with the radian of the medium pipeline (1) is arranged below the medium pipeline (1), a set of sliding device is arranged at the front end of the medium pipeline (1), and then the medium pipeline (1) is pulled in place by using a chain block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911408674.4A CN110985765A (en) | 2019-12-31 | 2019-12-31 | Flexible waterproof sealing structure of wall bushing and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911408674.4A CN110985765A (en) | 2019-12-31 | 2019-12-31 | Flexible waterproof sealing structure of wall bushing and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110985765A true CN110985765A (en) | 2020-04-10 |
Family
ID=70079521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911408674.4A Pending CN110985765A (en) | 2019-12-31 | 2019-12-31 | Flexible waterproof sealing structure of wall bushing and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110985765A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209109A (en) * | 2020-10-30 | 2021-01-12 | 重庆智翔金泰生物制药有限公司 | Isolated material conveying method |
| CN112901861A (en) * | 2021-01-25 | 2021-06-04 | 中国十九冶集团有限公司 | Connecting structure and method for flexible sleeve and pipeline |
| CN114636022A (en) * | 2022-05-07 | 2022-06-17 | 山西省安装集团股份有限公司 | Water supply and drainage pipeline structure for building construction |
| CN115183064A (en) * | 2022-07-05 | 2022-10-14 | 华能兰州新区热电有限公司 | Well room wall heat supply pipeline supports watertight fittings |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10132854A1 (en) * | 2001-01-18 | 2002-07-25 | Wilhelm Pilger | Watertight pipe duct, used for brickwork or concrete walls or floors, includes a moisture-swellable seal to prevent ingress of moisture from the outside |
| CN2630604Y (en) * | 2003-06-18 | 2004-08-04 | 大庆绿星环保科技有限公司 | Pipeline through-wall anti-seepnig casing pipe |
| CN202109118U (en) * | 2011-06-01 | 2012-01-11 | 北京弗莱希波·泰格金属波纹管有限公司 | Sealing structure of sleeve compensator |
| CN203626137U (en) * | 2013-11-14 | 2014-06-04 | 苏州工业园区设计研究院股份有限公司 | Hole-opening structure for reinforced concrete beam |
| CN104565557A (en) * | 2013-10-21 | 2015-04-29 | 衢州市易凡设计有限公司 | Dustproof wall-penetrating sleeve |
| CN207961758U (en) * | 2018-03-12 | 2018-10-12 | 山东国建工程集团有限公司 | Underground effective waterproof construction through walls |
| CN209469869U (en) * | 2019-01-18 | 2019-10-08 | 山西省工业设备安装集团有限公司 | The construction auxiliary mould of poling in a kind of major diameter heat supply pipeline push pipe |
| CN211624443U (en) * | 2019-12-31 | 2020-10-02 | 北京凯盛建材工程有限公司 | Flexible waterproof sealing structure of wall bushing |
-
2019
- 2019-12-31 CN CN201911408674.4A patent/CN110985765A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10132854A1 (en) * | 2001-01-18 | 2002-07-25 | Wilhelm Pilger | Watertight pipe duct, used for brickwork or concrete walls or floors, includes a moisture-swellable seal to prevent ingress of moisture from the outside |
| CN2630604Y (en) * | 2003-06-18 | 2004-08-04 | 大庆绿星环保科技有限公司 | Pipeline through-wall anti-seepnig casing pipe |
| CN202109118U (en) * | 2011-06-01 | 2012-01-11 | 北京弗莱希波·泰格金属波纹管有限公司 | Sealing structure of sleeve compensator |
| CN104565557A (en) * | 2013-10-21 | 2015-04-29 | 衢州市易凡设计有限公司 | Dustproof wall-penetrating sleeve |
| CN203626137U (en) * | 2013-11-14 | 2014-06-04 | 苏州工业园区设计研究院股份有限公司 | Hole-opening structure for reinforced concrete beam |
| CN207961758U (en) * | 2018-03-12 | 2018-10-12 | 山东国建工程集团有限公司 | Underground effective waterproof construction through walls |
| CN209469869U (en) * | 2019-01-18 | 2019-10-08 | 山西省工业设备安装集团有限公司 | The construction auxiliary mould of poling in a kind of major diameter heat supply pipeline push pipe |
| CN211624443U (en) * | 2019-12-31 | 2020-10-02 | 北京凯盛建材工程有限公司 | Flexible waterproof sealing structure of wall bushing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209109A (en) * | 2020-10-30 | 2021-01-12 | 重庆智翔金泰生物制药有限公司 | Isolated material conveying method |
| CN112901861A (en) * | 2021-01-25 | 2021-06-04 | 中国十九冶集团有限公司 | Connecting structure and method for flexible sleeve and pipeline |
| CN114636022A (en) * | 2022-05-07 | 2022-06-17 | 山西省安装集团股份有限公司 | Water supply and drainage pipeline structure for building construction |
| CN115183064A (en) * | 2022-07-05 | 2022-10-14 | 华能兰州新区热电有限公司 | Well room wall heat supply pipeline supports watertight fittings |
| CN115183064B (en) * | 2022-07-05 | 2023-06-16 | 华能兰州新区热电有限公司 | Well room wall heat supply pipeline supports watertight fittings |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110985765A (en) | Flexible waterproof sealing structure of wall bushing and construction method | |
| CN211624439U (en) | Damping waterproof wall pipe structure | |
| CN110985764A (en) | Vibration-damping waterproof wall penetrating pipe structure and construction method thereof | |
| CN110953406B (en) | Maintenance and transformation method for existing waterproof sealing structure of wall bushing | |
| CN110872846A (en) | Assembled steel corrugated comprehensive pipe gallery | |
| CN211624443U (en) | Flexible waterproof sealing structure of wall bushing | |
| CN111536362B (en) | Method for grouting and reinforcing fiber grids of large-diameter concrete pipeline lining | |
| CN111140698A (en) | Waterproof wall bushing structure with flexible dynamic seal assembly on neutral surface and construction method | |
| CN211624438U (en) | Waterproof wall bushing structure with neutral surface provided with flexible dynamic seal assembly | |
| CN215293984U (en) | Municipal administration water supply and drainage engineering pipeline connecting device | |
| CN216590324U (en) | Flexible waterproof sealing structure of wall pipe with adjustable | |
| CN212537127U (en) | Splicing lining structure for repairing large-caliber drainage pipeline | |
| CN108625457B (en) | Pipeline construction method for sewage deep sea discharge engineering | |
| CN113175058A (en) | Existing underground jacking pipe access construction method | |
| CN114526398A (en) | Construction method for repairing drainage pipeline by newly added lining pipe | |
| CN107883113B (en) | Adjustable pipeline inner support reinforcing system and reinforcing method thereof | |
| CN100532746C (en) | Underground sewer repairing method | |
| CN113124258A (en) | Large box culvert uninterrupted water plugging device and repairing method using same | |
| KR102369645B1 (en) | Concrete Conduit Repair and Reinforcement Method Using Composite Cement Panel | |
| CN212107451U (en) | Continuous water seal blocking device for large box culvert | |
| CN220451890U (en) | Prefabricated well plate assembly structure | |
| Bardakjian et al. | Design Guidelines for the Steel Pipelines of a Major Project in San Antonio, Texas | |
| CN220790028U (en) | Assembly structure for communication between inspection well and drainage pipeline | |
| CN214741349U (en) | Shield constructs section of jurisdiction structure that shield constructs quick-witted thrust city tunnel and prevent section of jurisdiction come-up | |
| KR20140010216A (en) | Sealing repair method of underground buried pipe joint and damaged part |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |