CN111140698A

CN111140698A - Waterproof wall bushing structure with flexible dynamic seal assembly on neutral surface and construction method

Info

Publication number: CN111140698A
Application number: CN201911408824.1A
Authority: CN
Inventors: 张莹; 马明亮; 魏文荣; 武力; 姚俊; 李英; 任宇霞; 张树伟; 王安然
Original assignee: Productivity Center Of Building Materials Industry China; Beijing Triumph International Engineering Co ltd
Current assignee: Productivity Center Of Building Materials Industry China; Beijing Triumph International Engineering Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-05-12
Anticipated expiration: 2039-12-31
Also published as: CN111140698B

Abstract

The invention provides a waterproof wall bushing structure with a flexible dynamic sealing assembly on a neutral surface and a construction method, which are used for sealing a medium pipeline penetrating through a wall bushing pre-buried in a wall body. The waterproof wall bushing structure adopts the retainer to arrange the sealing component on the neutral surface and/or two sides of the wall bushing, when the wall body and the medium pipeline generate relative displacement and distortion deformation, the retainer deforms along with the neutral surface, the retainer only bears the minimum displacement deformation amount on the neutral surface, the relative acting space of the sealing ring on the contact surface is not easy to damage, and the integral waterproof sealing effect of the structure is ensured.

Description

Waterproof wall bushing structure with flexible dynamic seal assembly on neutral surface and construction method

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 waterproof wall bushing structure with a flexible dynamic sealing assembly arranged on a neutral surface 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 type B is shown in fig. 1A to 1D, and is used for sealing a medium pipeline 1 passing through a wall body 01, and comprises a wall bushing 2 sleeved with the medium pipeline 1 and a sealing structure 03 arranged between the medium pipeline 1 and the wall bushing 2, wherein the wall bushing 2 is embedded in the wall body 01, the sealing structure 03 comprises two seals, wherein the first seal on the water-facing side adopts caulking treatment of a gap filling material 0312 and a simple sealing paste 0311 (rigid material), and an inner retainer ring 033 welded inside the wall bushing 2 is used as a unidirectional constraint positioning plug to form a rigid sealing component 031; the second seal on the back water surface side is formed by plugging a pre-tightening sealing ring 0321 (made of flexible material) by an inner retainer ring 033 and an L-shaped flange gland 0322 welded inside a wall bushing 2 to form a flexible sealing assembly 032; 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) the sealing mode, the sealing material that the first way of this structure is sealed, the second way is sealed adopts are different for medium pipeline 1 is unbalanced in the inside both sides strong point atress of wall bushing 2, and reasonable deformation, displacement and medium pipeline's work vibration can not be absorbed to rigid seal subassembly 031, changes and receives destruction, influences seal structure 03's sealed effect. The second seal applies pretightening force to the seal ring, so that the extrusion deformation of the seal ring and the friction resistance of a contact surface are generated, the plastic index of the seal ring is sacrificed to a certain extent by the extrusion deformation, and the effective plastic index of the seal ring cannot be completely acted on a working part; under an ideal state, the sealing ring and the contact surface are relatively static, so that a static sealing effect is achieved; in an actual use environment, radial relative displacement inevitably exists between the medium pipeline 1 and the wall bushing 2, so that static sealing between the sealing ring and the contact surface fails and leakage is generated, and therefore, the static sealing structure has limitation in use between the medium pipeline 1 with relative displacement and the wall bushing 2.

(2) As shown in fig. 1E, the first seal and the second seal are both disposed at the end of the wall bushing 2, when the building wall and the medium pipe 1 are distorted, the relative displacement between the two sides of the wall bushing 2 and the medium pipe 1 is usually the largest, and the displacement acts on the seal assemblies at the two sides, so that the seal assemblies at the two sides are easy to damage, and it is obviously unreasonable to dispose the seal structure 03 at the end position where the distortion is the largest.

(3) The first seal between the medium pipeline 1 and the wall-through casing 2 on the upstream side of the wall 01 is sealed by rigid sealant 0311 (see fig. 1D), when the wall 01 or the medium pipeline 2 is settled, displaced and deformed, the rigid sealant 0311 is subjected to the acting force between the wall-through casing 2 and the medium pipeline 1, a destructive structural gap may be generated to disable the seal assembly, and at the moment, only the second seal is left and is difficult to be applied to the waterproof sealing function under the conditions of high underground water level and large osmotic pressure.

(4) Two sealed interior retaining rings 033 all set up in the inside of wall bushing 2 (see fig. 1B), when first sealed inefficacy, because two welded fastening are in the inside interior retaining ring 033 of wall bushing and shelter from, can't restore the first sealed (rigid seal subassembly 031) that has damaged from the dorsal aspect side, can only follow the excavation of building wall body outside, change rigid seal subassembly 031, the unavoidable waterproof construction that can be with the outer enclosure wall body outside among the repair process, insulation construction destroys, increase the maintenance degree of difficulty and increase cost of maintenance.

(5) In the pre-tightening construction process of the L-shaped flange gland 0322 (see fig. 1C) of the existing second seal (flexible seal assembly 032), the pre-tightening force of the bolt set acting on the L-shaped flange gland 0322 acts on the flexible material (seal ring 0312), an assembly pre-tightening space is left between the L-shaped flange gland 0322 and the end wing ring plate 23 of the wall bushing 2 to adjust the pre-tightening amount of the seal ring 0312, and the bolt set 4 is easy to loosen during the long-term working vibration of the medium pipeline 1. If the L-shaped flange cover 0322 is directly attached to the end wing ring plate 23 of the wall bushing 2 for locking, the fastening and self-locking function of the bolt set can be realized, but the reasonable pretightening force and the sealing deformation of the sealing ring 0312 cannot be controlled due to the lack of an assembly pretightening space between the L-shaped flange cover 0322 and the end wing ring plate 23 of the wall bushing 2, so that the flexible sealing effect is lost.

(6) The existing first seal (rigid seal assembly 031) is arranged on the outer side upstream face of the wall body 01 (see fig. 1D), and the exposed sealant 0311 cannot play a role in resisting shock waves in wartime specified in the design specifications of civil air-raid basements and cannot meet the overall strength requirement of the wall body.

(7) The wing ring plates 23 at the two sides of the wall bushing 2 protrude out of the wall body 01 (see fig. 1B), the arrangement mode is not convenient for formwork support in the construction process, the wall bushing 2 cannot be effectively connected and fixed with structural steel bars of the wall body 01 as a whole, and the wing ring plates 23 at the two sides of the wall bushing 2 cannot be tightly fixed with concrete of the wall body 01, so that the connection strength of the wall bushing 2 and the wall body 01 as a whole is influenced. In addition, the metal wall bushing and the concrete are made of two different materials, and the physical expansion coefficients of the metal wall bushing and the concrete are different, so that an expansion leakage gap between the metal wall bushing and the concrete can be generated, the end wing ring plate 23 protrudes out of the wall body, the function of a water blocking plate cannot be realized, and the waterproof sealing function under the conditions of high underground water level and high osmotic pressure cannot be ensured only by the middle wing ring plate 22.

Disclosure of Invention

In order to solve one or more of the problems, the invention provides a waterproof wall bushing structure with a flexible dynamic sealing assembly on a neutral surface.

The technical scheme adopted by the invention is as follows:

the utility model provides a waterproof wall bushing structure of flexible sealing assembly is established to neutral surface for the medium pipeline that passes the wall body seals, including pre-buried wall bushing in the wall body, its characterized in that still moves sealing assembly (3) including the flexibility that sets up between wall bushing and medium pipeline, and this flexible sealing assembly (3) that moves includes:

the holder (32) is sleeved on the medium pipeline (1), the inner wall and the outer wall of the holder (32) are respectively provided with an inner sealing groove (321) and an outer sealing groove (322), and the inner sealing groove (321) and the outer sealing groove (322) are arranged in a staggered mode at intervals;

the sealing rings are positioned on two sides of the neutral surface and/or the neutral surface of the retainer (32) and comprise at least one inner sealing ring (30) installed in the inner sealing groove (321) and at least one outer sealing ring (31) installed in the outer sealing groove (322), and the inner sealing ring (30) and the outer sealing ring (31) have preset initial deformation in the radial direction of the medium pipeline;

an end stop (33) comprising a water-facing end stop (331) fixed to the water-facing end wing ring plate (231) of the wall bushing (2) and a water-facing end stop (332) fixed to the water-facing end wing ring plate (232) of the wall bushing (2) for limiting the sealing ring and the retainer (32) between the wall bushing (2) and the media duct (1).

In the waterproof wall bushing structure with the flexible dynamic seal assembly on the neutral surface, a radial distance is reserved between the end baffle (33) and the medium pipeline (1), and the distance is a preset comprehensive deformation gap; radial gaps S are reserved between the retainer (32) and the inner wall of the wall bushing (2) and between the retainer and the outer wall of the medium pipeline (1).

In the waterproof wall bushing structure with the flexible dynamic seal assembly on the neutral surface, the initial deformation of the seal ring is 10% -20% of the diameter of the seal ring.

In the waterproof wall bushing structure with the flexible dynamic seal assembly on the neutral surface, the inner seal grooves (321) and the outer seal grooves (322) are continuously, uniformly and alternately arranged along the length direction of the retainer (32).

In the waterproof wall bushing structure with the neutral surface provided with the flexible dynamic seal assembly, the groove bottoms and the edges at the port positions of the inner seal groove (321) and the outer seal groove (322) are all rounded corners.

In the waterproof wall bushing structure with the flexible dynamic sealing assembly on the neutral surface, the inner sealing ring (30) and the outer sealing ring (31) have the same specification.

In the waterproof wall bushing structure with the flexible dynamic sealing assembly on the neutral surface, the inner sealing ring (30) and the outer sealing ring (31) are arranged in pair.

In the waterproof wall bushing structure with the flexible dynamic seal assembly on the neutral surface, the middle wing ring plate (22) of the wall bushing (2) is pre-embedded in the wall body (01), and the outer end surfaces of the upstream end wing ring plate (231) and the downstream end wing ring plate (232) and the surface of the wall body (01) are in the same plane; preferably, the upstream end wing ring plate (231) of the wall bushing (2) is tightly attached to the upstream end baffle (331) and fixed by welding, and the downstream end wing ring plate (232) of the wall bushing (2) is tightly attached to the downstream end baffle (332) and is locked and fixed by the bolt group (4).

The invention also provides a construction method of the waterproof wall bushing structure, which 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 annular plate (22) and an end wing annular plate (23) of the wall bushing (2) are embedded in the wall body (01), and the surfaces of the end wing annular plate (23) and the wall body (01) are in the same plane;

step two, a retainer (32) sleeved with a sealing ring penetrates through the penetrating end of the medium pipeline (1), an inner sealing ring (30) is arranged at an inner sealing groove (321) on the two sides of the neutral surface and/or the neutral surface of the retainer (32), and an outer sealing ring (31) is arranged at an outer sealing groove (322) on the two sides of the neutral surface and/or the neutral surface of the retainer (32); then the medium pipeline (1) penetrates into the wall bushing (2) from the back water side of the wall body (01) to ensure that the medium pipeline (1) and the wall bushing (2) are coaxial and fixed; sleeving a water-facing end baffle plate (331) on the medium pipeline (1) from the water-facing side, and welding and fixing the water-facing end baffle plate on a water-facing end wing ring plate (231);

and thirdly, pushing the part penetrating into the upper back surface side of the medium pipeline (1) into the wall bushing (2), and fastening the back surface end baffle (332) and the back surface end wing ring plate (232) in place through the bolt group (4) to meet the fastening torque of the bolt group (4).

In the construction method of the waterproof wall bushing structure, in the first step, before the wall bushing (2) is embedded, the following steps are also included:

the wall is characterized in that a reserved through-wall hole (011) is formed in the position of the wall embedded through-wall sleeve (2), and reinforcing ribs (013) are arranged around the reserved through-wall hole (011) and form an angle with conventional distribution ribs (012) in a wall body.

By adopting the technical scheme, the invention has the following characteristics and beneficial effects:

1) the waterproof wall bushing structure utilizes the retainer to arrange the sealing rings at two sides of the neutral surface and/or the neutral surface of the wall bushing, and under the condition that the wall body and the medium pipeline generate larger relative displacement and distortion deformation, the retainer deforms along with the neutral surface, the retainer only bears the minimum displacement deformation on the neutral surface, and the relative action space of the sealing rings on the contact surface is not easy to damage, so that the integral waterproof sealing effect of the structure is ensured;

2) the original static sealing structure is improved into a flexible dynamic sealing structure, the pre-tightening deformation of a sealing ring in the axial direction of a medium pipeline is not required to be controlled in the construction process, the sealing ring is positioned in the sealing groove space of a retainer, the flexible high-viscosity fluid flows in the groove of the specific retainer to deform under the action of external osmotic pressure, and even if relative movement or relative displacement exists between the medium pipeline and a waterproof sleeve, a leakage space can be formed into a zero space (which means that a leakage channel space does not exist any more), so that the zero space sealing effect is achieved;

3) sealing grooves are arranged on the inner wall and the outer wall of a retainer (a sealing main body) in a staggered mode, inner and outer side bidirectional sealing is achieved in the same kinematic pair, an outer sealing ring in the outer sealing groove of the retainer ensures dynamic sealing of a side sealing surface of a waterproof wall bushing, an inner sealing ring in the inner sealing groove of the retainer ensures dynamic sealing of a side sealing surface of a medium pipeline, and the inner sealing ring and the outer sealing ring are made of the same material and are made of the same type, so that the retainer has an automatic centering function; under the action of the permeation pressure of the underground water level, the inner sealing ring and the outer sealing ring simultaneously generate plastic flow deformation, and the leakage channel is plugged to form zero-space sealing;

4) the flexible dynamic seal assembly adopts redundancy technology, the inner seal ring and/or the outer seal ring can be flexibly added according to the actual situation on site, the seal groove of the retainer without the seal ring can be used for absorbing the action stress, deformation and displacement space of displacement generated by the building wall and the medium pipeline, so that the working space with the seal ring is always in a normal state, and the vibration isolation effect between the building wall and the medium pipeline is also realized, thereby improving the flexibility of the integral framework of the retainer;

5) the flexible dynamic sealing assembly adopts the detachable end baffle of the back water surface and the non-fixed retainer, so that the maintenance work of the sealing assembly when the sealing assembly fails is simplified, earth excavation is not required to be carried out on the upstream surface of the wall bushing during maintenance, the waterproof structure and the heat insulation structure of a building wall body are not damaged, and only the end baffle of the back water surface is directly detached on the back water surface of the wall bushing to replace the sealing ring, so that the maintenance difficulty is reduced, and the maintenance cost is reduced;

6) the retainer adopts a continuous sealing groove design along the length direction, is easier to process and manufacture, forms standard serialization, can control the size of the retainer by using a simple cutting tool according to the thickness of a field wall body, improves the assembly precision, and does not influence the sealing effect even if the retainer provided with the sealing ring horizontally and integrally slides between the waterproof wall bushing and the medium pipeline;

7) adjusting the position relation between the two end wing ring plates of the wall bushing and the wall body, so that the two end wing ring plates are embedded into the wall body to form a mechanical labyrinth type sealing structure, and meanwhile, the connection strength between the wall bushing and the wall body is improved;

8) the structure and the installation mode of the inner retainer ring of the wall bushing are changed, the welding fixing mode of the original retainer ring is changed into a holder non-welding sliding fit mode, the existing rigid seal assembly is replaced by a flexible dynamic seal assembly which is matched with a seal groove of the holder to form a seal ring, the end baffle plate of the water-facing surface plays the role of a high-strength resistance sheet required by civil air defense standards, the existing L-shaped flange gland structure is changed, the fastening force of a bolt group acting on the L-shaped flange gland is directly acted on a wing ring plate of the wall bushing, the bolt locking function is realized, meanwhile, the welding type inner retainer ring is changed into a non-fixed type holder, the assembly gap between a medium pipeline and the wall bushing is enlarged, the construction is convenient, the seal ring can be detached and replaced on the water-facing surface during maintenance, and the water-proof structure and the heat insulation structure of the wall body on.

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 an internal retainer ring welded inside a conventional wall bushing;

FIG. 1C is a schematic view of a connection structure of an L-shaped flange gland and a bolt set in a conventional waterproof sealing structure of a wall bushing;

FIG. 1D is a schematic structural view of a rigid upstream face seal assembly in a conventional waterproof seal structure for a wall bushing;

FIG. 1E is a schematic view of a prior art waterproof sealing structure of a wall bushing under a distortion condition;

FIG. 2A is a schematic structural view of a waterproof wall bushing structure of the present invention;

FIG. 2B is a schematic view of the assembly of a media conduit as it traverses a wall bushing;

FIG. 2C is a schematic view of the wall bushing and wall position;

FIG. 2D is a schematic view of a locking structure of the bolt set of the rear end baffle and the wall bushing;

FIG. 2E is a schematic view of the welded structure of the upstream end baffle (resisting piece) and the wall bushing;

FIG. 2F is a schematic view of the reinforcement of the wall structure around the wall bushing;

FIG. 2G is a schematic view of an assembly structure of the retainer and the seal ring;

FIG. 2H is an enlarged schematic view of region B of FIG. 2G;

fig. 2I is a partially enlarged schematic view of an embodiment of an assembly structure between an inner seal ring and an outer seal ring of a flexible dynamic seal assembly and a pipe body of a medium pipeline and a wall bushing, respectively.

The reference numbers in the figures denote:

01-wall body, 011-reserved through-wall holes, 012-conventional distribution ribs and 013-reinforcing ribs;

03-sealing structure, 031-rigid sealing component, 0311-sealing paste, 0312-caulking material; 032-flexible sealing component, 0321-sealing ring, 0322-L-shaped flange gland; 033-inner retainer ring;

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;

3-flexible dynamic seal assembly, 30-inner seal ring, 31-outer seal ring, 32-retainer, 321-inner seal groove and 322-outer seal groove; 33-end baffle, 331-upstream end baffle, 332-downstream end baffle;

4-bolt group;

the NS-neutral plane; s-a radial gap between the retainer and the inner wall of the wall bushing or the outer wall of the medium pipeline;

f 1-assembly clearance of medium pipeline in original structure, f 2-assembly clearance of medium pipeline in structure of the invention;

h-the assembly pre-tightening quantity positioning value of the L-shaped flange gland in the original structure;

d 1-the outside diameter of the retainer, d 2-the inside diameter of the retainer, l-the length of the retainer, d 0-the line diameter of the sealing ring, b-the width of the sealing groove of the retainer, t-the depth of the sealing groove of the retainer, r 1-the fillet radius of the bottom of the sealing groove of the retainer, and r 2-the fillet radius of the edge of the sealing groove of the retainer.

Detailed Description

The invention provides a waterproof wall bushing structure and a construction method, which are suitable for being positioned in an underground water level layer and having high osmotic pressure, and are used for sealing a medium pipeline passing through a wall body, and comprise a wall bushing sleeved with the medium pipeline and a flexible dynamic sealing assembly arranged between the wall bushing and the medium pipeline, wherein the wall bushing structure comprises a first wall bushing and a second wall bushing, the first wall bushing is provided with a first sealing surface, the second wall bushing is provided with a second sealing surface, and the second wall bushing is provided with a second sealing surface, and the second:

the flexible dynamic sealing assembly comprises a retainer, a sealing ring and an end baffle, wherein the inner side and the outer side of the retainer are respectively provided with an inner sealing groove and an outer sealing groove, and the inner sealing groove and the outer sealing groove are arranged in a staggered mode at intervals; the sealing ring comprises an inner sealing ring arranged in the inner sealing groove and an outer sealing ring arranged in the outer sealing groove, the end part baffle comprises a water-facing end baffle and a water-facing end baffle which are respectively fixed on the two sides of the water-facing surface and the water-facing surface of the wall bushing, the water-facing end baffle and the water-facing end baffle limit the sealing ring and the retainer between the wall bushing and the medium pipeline, and a radial gap is reserved between the end part baffle and the medium pipeline, wherein 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, a gap generated by working vibration, pressure oscillation, water hammer phenomenon and the like of the medium pipeline generated in a radial gap overlapped value, and the overlapped value can be estimated through comprehensive analysis and calculation). The flexible dynamic sealing rings are uniformly distributed on two sides of a neutral surface of the wall bushing, a flexible dynamic sealing assembly formed by the sealing rings, the retainer and the end baffle is balanced in stress, and meanwhile, displacement and deformation of a flexible fulcrum of the neutral surface are relatively minimum, so that various displacements and deformations of buildings and medium pipelines and impact deformation caused by action force of impact waves in wartime can be resisted to a greater extent.

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 the non-welding sliding fit mode of the retainer, 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 the waterproof layer and the heat insulation layer of a building structure is solved;

the sealing assembly between the medium pipeline and the wall bushing adopts a flexible dynamic sealing structure with initial deformation, the flexible sealing material adopts an O-shaped sealing ring group and is arranged in a sealing groove arranged on the retainer, and the sealing ring has certain flowing space and initial deformation in the sealing groove so as to meet the reasonable flowing sealing of the flexible sealing ring and the waterproof sealing effect of various field extreme conditions of high underground water level and large osmotic pressure.

The waterproof wall bushing structure with the flexible dynamic sealing assembly on the neutral surface and the construction method thereof are described in detail below with reference to the embodiments and the accompanying drawings.

In the first embodiment shown in fig. 2A, the waterproof wall bushing structure is used for sealing a medium pipeline 1 sleeved in a wall 01, and includes a wall bushing 2 and a flexible dynamic seal assembly 3, the medium pipeline 1 is sleeved in the wall bushing 2, and the flexible dynamic seal assembly 3 is arranged between the wall bushing 2 and the medium pipeline 1, wherein the wall bushing 2 of the present invention is obtained by improving the existing wall bushing:

wall bushing 2

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 retracts 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 flexible dynamic seal assembly 3 and the fixed end baffle 33. 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.

Flexible dynamic seal assembly 3

The flexible dynamic seal assembly 3 adopts a structural form and a design concept which are completely different from those of the existing seal structure 03, the seal rings with initial deformation are arranged on two sides of a neutral surface of the wall bushing 2 through the retainer 32, and the seal rings generate plastic flow deformation under the action of the permeation pressure of the underground water level to form zero-space seal on a leakage channel.

The current wall bushing structure is as shown in fig. 1B, this wall bushing's body internal weld has two interior retaining rings 033, and the processing manufacturing process of this spare part structure is complicated, and when wall bushing 2 pipe diameter specification is less, the inboard welded machining of interior retaining ring can't be carried out, and in this structure, the installation clearance of medium pipeline 1 is f1, and the construction assembly degree of difficulty is great. In this embodiment, referring to fig. 2B, an inner retainer ring 033 located inside a wall bushing 2 is changed into an independent non-fixed retainer 32, the retainer 32 is installed after a medium pipeline 1 passes through the wall bushing 2, and plays a role of an inner retainer ring (for positioning a seal ring) of an existing waterproof sealing structure, and meanwhile, in the process that the medium pipeline 1 is installed and passes through the wall bushing 2, an assembly gap between the medium pipeline 1 and the wall bushing is increased from f1 to f2, and the structure not only enables the parts to be simple to process, but also greatly reduces installation difficulty.

In this embodiment, referring to fig. 2A, the flexible dynamic seal assembly 3 is a flexible seal assembly disposed on both sides of the neutral surface and/or the neutral surface, and includes a seal ring, a holder 32 for mounting the seal ring, and an end baffle 33 (a water facing end baffle 331 or a water facing end baffle 332), where the holder 32 is sleeved on the medium pipeline 1, and radial gaps S (see fig. 2I) are left between the holder 32 and the inner wall of the wall bushing 2 and between the holder and the outer wall of the medium pipeline 1; the upstream end baffle 331 is welded and fixed on the upstream end wing ring plate 231 of the wall bushing 2, plays a role in restraining the retainer 32 in the axial direction and improving the capability of the sealing ring to resist external force damage, plays a role of a resistance sheet, changes the open unrestrained state of the existing structure (see fig. 1C), and preferably adopts a welding mode because the structure of the non-fixed retainer 32 changes the traditional mode of maintaining from the upstream, the structure can realize maintaining from the back surface without dismantling the upstream end baffle 331. A radial margin (i.e., a comprehensive deformation gap) is left between the end baffle 33 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 sealing ring, and the sealing ring is prevented from directly acting on the rigid structure (the sealing baffle 321), and similarly, the comprehensive deformation gap is left between the end baffle 332 on the back water surface and the medium pipeline 1. Preferably, the upstream end baffle 331 and the upstream end wing ring plate 231 are tightly attached and fixed by electric welding, the back end baffle 332 is a pre-pressed flange gland, and the pre-pressed flange gland and the back end wing ring plate 232 are tightly attached and locked by the bolt set 4.

Specifically, the retainer 32 is used as a support framework, and is required to have sufficient strength for accommodating the sealing ring and good plastic deformation capacity, so that the sealing ring can flow and deform in an ideal action space to realize a dynamic sealing effect, and meanwhile, the manufacturing and processing are convenient; preferably, the cage 32 is made of nylon tubing.

Specifically, because the space between the medium pipeline 1 and the wall bushing 2 is limited, the thickness of the retainer 32 located in the space is also limited, and in order to ensure the strength of the retainer 32, in the embodiment shown in fig. 2A, the inner wall and the outer wall of the retainer 32 are respectively provided with an inner sealing groove 321 and an outer sealing groove 322, the inner sealing groove 321 and the outer sealing groove 322 are arranged in a staggered manner at intervals, and the width, the depth and the related dimensions of the sealing groove of the retainer 32 are all selected according to national standard; the seal rings are rubber seal rings and include an inner seal ring 30 mounted in an inner seal groove 321 and an outer seal ring 31 mounted in an outer seal groove 322. The sealing rings in the flexible dynamic sealing assembly 3 are positioned on two sides of the neutral surface and/or the neutral surface of the retainer 32 and comprise at least one inner sealing ring 30 and at least one outer sealing ring 31. One or more inner sealing rings 30 and/or outer sealing rings 31 can be additionally arranged on two sides of the neutral surface of the retainer 32 according to the requirements of application environment and waterproof sealing performance. Preferably, the inner seal ring 30 and the outer seal ring 31 have the same specification and are arranged in pairs (i.e. one inner seal ring 30 corresponds to one outer seal ring 31), which further contributes to the stress balance of the retainer 32.

In one embodiment, the inner sealing grooves 321 and the outer sealing grooves 322 are continuously staggered along the length of the cage 32 on the inner wall and the outer wall of the cage 32. In the retainer 32 of the embodiment, the sealing grooves which are not provided with the sealing rings are used for standby, the number of the sealing rings can be added according to the field situation, and the sealing effect is further enhanced; in addition, the sealing groove without the sealing ring can be used for improving the overall flexibility of the retainer 32, and absorbing the stress and deformation displacement space when the building wall (the wall bushing 2) and the medium pipeline 1 generate displacement, so that the working space with the sealing ring is always in a normal state; meanwhile, the sealing groove without the sealing ring also plays a role in vibration isolation between the building wall and the medium pipeline 1; the retainer 32 is designed into a continuous sealing groove structure, is easier to process and manufacture, forms standard serialization, can eliminate the processing and construction errors of the sleeve and the wall body by using a simple cutting tool according to the thickness of the on-site wall body, and improves the assembly precision.

In another embodiment, the inner and

outer seal grooves

321, 322 are staggered only in a limited length in the neutral plane of the cage 32 and on both sides thereof.

The retainer 32 is a key component for realizing that the upper sealing surface and the two sealing surfaces of the same kinematic pair simultaneously achieve a sealing effect, the sealing grooves of the retainer 32 are used for limiting the sealing rings in a reasonable acting space, and all the sealing rings are made of the same material and have the same diameter specification, so that the initial deformation of the sealing rings in the inner sealing grooves and the outer sealing grooves is the same, the retainer 32 has an automatic centering effect, and deviation is not easy to generate.

The sealing ring has a predetermined initial deformation (hereinafter, the initial deformation of the sealing ring refers to the initial deformation of the sealing ring in the radial direction of the medium pipeline 1) in the radial direction of the medium pipeline 1 in the sealing groove of the retainer 32, so that the sealing ring obtains an initial sealing contact stress, a certain friction force is ensured to exist between the sealing ring and the sealing groove and between the sealing surface (the inner wall of the wall bushing 2 or the outer wall of the medium pipeline 1), a reasonable dynamic sealing effect is formed under the action of resisting external osmotic pressure, and meanwhile, a machining error, a position error and a wear amount of the sealing ring between the wall bushing 2 and the medium pipeline 1 are compensated; the initial deformation of the sealing ring is selected according to national standards or industrial standards, preferably, the initial deformation of the sealing ring is 10% -20% of the diameter of the sealing ring, so that certain friction force is ensured between the sealing ring and a sealing groove and between the sealing ring and a sealing surface (the inner wall of the wall bushing 2 or the outer wall of the medium pipeline 1), and the requirement of waterproof sealing is met.

The outer sealing ring 311 arranged in the outer sealing groove 321 of the retainer 32 bears tensile force, the inner sealing ring 312 arranged in the inner sealing groove 322 of the retainer 32 bears compressive force, and the tensile amount and the compressive amount are selected according to national standard specifications or industry standard specifications.

Preferably, the groove bottoms of the outer sealing groove 321 and the inner sealing groove 322 of the retainer 32 are rounded (see a rounded corner radius r1 in fig. 2H), edges at the port parts of the outer sealing groove 321 and the inner sealing groove 322 are rounded (see a rounded corner radius r2 in fig. 2H), and the sealing ring is more tightly matched with the rounded corner sealing groove to prevent the sharp corner from damaging the sealing ring.

In the invention, the flexible dynamic seal assembly formed by the retainer 32 and the seal ring is positioned at two sides of a neutral surface, the seal ring is limited in the seal groove of the retainer 32 and has reasonable initial deformation, the seal ring in the state can be regarded as a high-viscosity fluid with extremely strong surface tension, the high-viscosity fluid flows in the seal groove of the retainer 32 under the bearing state that the seal ring bears the external water pressure, the seal material is forced to be extruded to a narrow gap between matching surfaces (the inner wall of the wall-penetrating sleeve 2 and the outer wall of the retainer 32 or the outer wall of the medium pipeline 1 and the inner wall of the retainer 32) along the flowing direction of the liquid under the action of the water pressure, a leakage channel is blocked and closed, and larger contact area and seal stress are obtained, thereby forming zero-space seal. Because the sealing ring has elasticity, the manufacturing and assembly tolerance can be compensated, the sealing ring can return to an initial state according to the elastic memory function in the material of the sealing ring after the external pressure disappears, even if the medium pipeline 1 and the sealing ring or the wall bushing 2 and the sealing ring have relative motion or displacement, the sealing function of the sealing structure cannot be changed, the real dynamic sealing is realized, but when the external osmotic pressure is large enough, the surface tension of the sealing ring is not enough to prevent the 'fluid flow', so that the extrusion failure of the sealing ring is caused. Through setting up a plurality of continuous sealing washers, the sealing washer that preceding became invalid can play certain damping pressure release effect for subsequent sealing washer plays sealed effect.

Referring to fig. 2B, the specific construction process of this embodiment is as follows:

firstly, sealing rings meeting design requirements are sleeved at the positions of an inner sealing groove 321 and an outer sealing groove 322 of a retainer 32, and the retainer 32 sleeved with the sealing rings is sleeved at the penetrating end of a medium pipeline 1 in a penetrating manner;

then, the penetrating end of the medium pipeline 1 penetrates through the wall-penetrating sleeve 2 from the water-back side of the wall body; leveling, aligning and elevation finding according to a preset position, ensuring the coaxiality of a medium pipeline 1 and a wall bushing 2, fixing the medium pipeline 1, tightly attaching a water-facing end baffle 331 (a resistance sheet) to a water-facing end wing ring plate 231, adjusting a gap (namely the flexible deformation comprehensive quantity) between the water-facing end baffle 331 and the medium pipeline, and then welding (spot welding can be performed, full welding can be avoided due to the fact that a waterproof layer and a heat insulation layer are arranged on the outer side of a subsequent building structure, welding is strictly forbidden after the sealing structure is installed, and otherwise, the sealing material has the possibility of being damaged); then, the retainer 32 sleeved with the sealing ring is pushed into a space between the wall bushing 2 and the medium pipeline 1 until the end surface of the retainer 32 on the upstream side contacts the baffle 331 on the upstream side (note that the end surface of the retainer 32 cannot protrude out of the end surface of the wing ring plate 332 on the downstream side, otherwise the baffle 331 on the upstream side applies excessive stress to the sealing ring through the retainer 32 to influence the sealing effect, preferably, the horizontal length of the retainer 32 is 5mm-10mm smaller than that of the wall bushing); the back surface end baffle 332 is tightly attached to the back surface end wing ring plate 232, the pre-compression bolt group 34 penetrates through the back surface end baffle 332 and is screwed into the screw hole of the back surface end wing ring plate 232, and the back surface end baffle 332 acts on the end surface of the back surface side of the retainer 32 through the fastening force of the bolt group 4. The initial deformation of the sealing ring is selected according to national standard or industry standard, so that a certain friction force is ensured between the sealing ring and the sealing groove and between the sealing surface (the inner wall of the wall bushing 2 or the outer wall of the medium pipeline 1), the requirement of waterproof sealing is met, and after all installation projects are completed, the upstream end baffle 331 (preferably a resistance sheet) is subjected to anticorrosion treatment.

Referring to fig. 1C, the existing L-shaped flange gland 0322 is a welded assembly, that is, the short pipe is vertically welded on the basis of the conventional flange gland, 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 bolt group 4 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 based on the sealing gap, it is difficult to ensure the assembly construction requirement, and more importantly, due to the axial length dimension error generated by the processing difficulty of the existing inner retainer ring 033, the assembly pretension positioning value H (i.e. the length value between the contact surface of the short pipe of the L-shaped flange gland 0322 and the sealing ring 0321 and the front end of the end wing ring plate 232 on the back water surface) is difficult to determine and ensure, which can be obtained by calculating the precompression value of the sealing ring 0321 in the sealing principle, but in the actual construction, due to the accumulation of various errors, the control difficulty is large, even if the assembly pretension positioning value H is ensured by the related process, but because the current wrong fastening mode cannot achieve the fastening and locking effect, only the positioning effect of the pretension compression amount can be achieved, because the reaction force acting in the direction of the bolt comes from the flexible sealing material instead of the rigid object, and the bolt fastening torque cannot, 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, the existing L-shaped flange gland 0322 is replaced by directly using the back surface end baffle 332, as shown in fig. 2D, in this structure, the back surface end baffle 332 may be modified by using an existing standard flange, the back surface end baffle 332 in this structure only plays a role in limiting the retainer 32 and is not used for pre-pressing the seal ring in the axial direction of the medium pipeline, and the back surface end baffle 332 and the end wing ring plate 23 of the wall bushing 2 are tightly locked without reserving an assembly pre-tightening space.

The sealing structure enables the end baffle 332 on the back water surface to be tightly attached to the end wing ring plate 23 of the wall bushing and locked by the bolt group 4, and changes the floating fastening mode of the original nut into the rigid contact fastening mode, thereby ensuring that the bolt group is in a self-locking state for a long time, avoiding the adjustment of the axial pre-tightening compression quantity of a medium pipeline of a sealing ring, and simplifying the field assembly construction; the baffle 332 at the end part of the back water surface can be reformed by a standard flange plate, so that the processing technology is simplified, the product quality is ensured, and the standardization and the marketization are facilitated; the improved flange plate (the end baffle 332 on the back water surface) is independent of the retainer 32, the processing difficulty and the processing precision of a product are reduced, various processing errors of the original short pipe do not influence the comprehensive deformation clearance value any more, and the value between the pre-pressing flange gland on the back water surface and the medium pipeline 1 can be designed according to the comprehensive deformation clearance, so that the assembly construction is convenient.

The invention adopts the retainer 32 and the sealing ring to form the flexible dynamic sealing component 3 positioned at two sides of the neutral surface, and the flexible dynamic sealing component 3 has the following characteristics:

1) by utilizing the principle of minimum deformation of a neutral surface, flexible sealing components are arranged on two sides of the neutral surface of the wall bushing 2, the neutral surface is positioned at the position where the relative displacement between the medium pipeline 1 and the wall bushing 2 is minimum, the influence of the relative displacement and deformation between the medium pipeline 1 and the wall bushing 2 on the flexible sealing components near the neutral surface is smaller than that of the two end parts, the flexible sealing components at the position are not easy to damage, and therefore the waterproof sealing effect of the structure is guaranteed;

2) by applying the Pascal communicator principle of hydraulic transmission, the permeation pressure of the underground water level acts on the sealing ring through the comprehensive deformation gap between the upstream end baffle 331 and the medium pipeline 1, so that the pressure born by the sealing ring is greatly reduced (playing a role of a 'pressure reducing pore plate' in the architectural water supply and drainage profession);

3) the baffle 331 at the end of the upstream face plays a role of a resistance plate when the pipeline passes through the underground related pipeline with a preset function by combining the design specification of the civil air defense basement, so that the strength of the passing part of the medium pipeline 1 and the outer protective structure is ensured, and the service life of the sealing assembly is prolonged.

Specifically, the waterproof wall bushing structure bears the action direction of the groundwater level layer and the shock wave, namely the upstream end baffle 331 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 and the mechanical strength of the flexible dynamic sealing assembly 3.

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 difference in osmotic pressure may be achieved by placing a plurality of sealing rings in sealing grooves in the retainer 32 to form a plurality of seals.

Examples of the applications

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 a waterproof wall bushing with a neutral surface provided with a flexible dynamic sealing assembly is adopted, and an inner sealing assembly and an outer sealing assembly are respectively adopted.

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 medium pipeline 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 equal to 48 (mm);

the unilateral flexible sealing gap is the unilateral thickness of the retainer, namely the unilateral thickness of the medium pipeline, and/2 is 48/2 is 24 (mm);

cage outside diameter d 1-radial clearance S207-2-205 (mm)

The inner diameter d2 of the cage is equal to the outer diameter of the medium pipeline and the radial clearance S is equal to 159-2 and 157(mm)

Designing and selecting a sealing structure according to national standard GFB/T3452.3-2005 of type 0 rubber ring groove size for hydraulic and pneumatic air;

the sealing structure is a radial hydraulic dynamic seal, the nominal size of the retainer is 159-207 mm, the line diameter d0 of the sealing ring 31 is obtained by looking up a table and is 7mm, the width b of the sealing groove 321 obtained by looking up the groove size of the radial hydraulic dynamic seal is 9.5mm, the depth t of the sealing groove of the retainer 32 is 5.85mm, the fillet radius r1 of the bottom of the sealing groove of the retainer 32 is 0.8-1.2 mm, and the fillet radius r2 of the edge of the sealing groove of the retainer 32 is 0.1-0.3 mm.

The minimum value of the integrated deformation clearance is equal to the total amount of the sealing clearance of the retainer and the plastic deformation value of the integral sealing structure is equal to 4+10 (estimation) and equal to 14 (mm);

the inner bore diameter of the end baffle 33 is equal to the outer diameter of the medium conduit plus the comprehensive deformation clearance is equal to 159 plus 14 is equal to 173 (mm).

Construction method

The construction method of the waterproof wall bushing structure 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.

Step two, the penetrating end of the medium pipeline 1 is sleeved with a retainer 32 provided with a sealing ring in a penetrating way, an inner sealing ring 30 is arranged at an inner sealing groove 321 on the neutral surface and/or two sides of the neutral surface of the retainer 32, and an outer sealing ring 31 is arranged at an outer sealing groove 322 on the neutral surface and/or two sides of the neutral surface of the retainer 32; then the medium pipeline 1 penetrates into the wall bushing 2 from the back water surface side of the wall body 01, and the medium pipeline 1 and the wall bushing 2 are ensured to be coaxial and fixed; the water-facing-surface-side end flap 33 (water-facing-surface-side end flap 331 (resisting piece)) is fitted over the medium pipe 1 from the water-facing surface side and welded and fixed to the water-facing-surface-side end collar plate 23 (water-facing-surface-side end collar plate 231).

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) the inner sealing ring 30 and the outer sealing ring 31 are sequentially sleeved in the inner sealing groove 321 and the outer sealing groove 322 on two sides of the neutral surface of the retainer 32, and the retainer 32 provided with the sealing rings is sleeved on the medium pipeline 1 from the penetrating end of the medium pipeline 1; after the interior of the wall bushing 2 is cleaned, the medium pipeline 1 is penetrated into the wall bushing 2 from the back water surface side of the wall body 01, leveling, aligning and elevation finding are carried out according to a preset position, so that the medium pipeline 1 and the wall bushing 2 are coaxial, and the medium pipeline 1 is fixed after reaching the preset position; 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 end baffle 33 on the water-facing side is sleeved on the medium pipeline 1 on the water-facing side and is welded and fixed on the end wing ring plate 23 on the water-facing side (usually, the indoor medium pipeline 1 is extended to an outdoor position 1.5 meters away from the outer protective structure wall).

And step three, after welding the end baffle 33 (the upstream end baffle 331 (a resistance sheet)) on the upstream side, sequentially extruding and pushing the parts sleeved on the medium pipeline 1 into the wall bushing 2, and finally fastening the back water end baffle 332 and the back water end wing ring plate 232 in place through the bolt group 4, so as to meet the fastening torque of the bolt group 4 and finish the pre-tightening work of the sealing material.

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

1. The utility model provides a waterproof wall bushing structure of flexible sealing assembly is established to neutral surface for the medium pipeline that passes the wall body seals, including pre-buried wall bushing in the wall body, its characterized in that still moves sealing assembly (3) including the flexibility that sets up between wall bushing and medium pipeline, and this flexible sealing assembly (3) that moves includes:

2. The waterproof wall bushing structure with the flexible dynamic seal assembly on the neutral surface as claimed in claim 1, wherein a radial distance is provided between the end baffle (33) and the medium pipeline (1), and the distance is a preset comprehensive deformation gap; radial gaps S are reserved between the retainer (32) and the inner wall of the wall bushing (2) and between the retainer and the outer wall of the medium pipeline (1).

3. The waterproof wall bushing structure with the neutral surface provided with the flexible dynamic sealing assembly according to claim 1 or 2, wherein the initial deformation of the sealing ring is 10% -20% of the diameter of the sealing ring.

4. The waterproof wall bushing structure with the flexible dynamic seal assembly on the neutral surface as claimed in claim 1 or 2, wherein the inner seal grooves (321) and the outer seal grooves (322) are continuously and uniformly staggered along the length direction of the retainer (32).

5. The waterproof wall bushing structure with the flexible dynamic seal assembly on the neutral surface as claimed in claim 1 or 2, wherein the groove bottoms of the inner seal groove (321) and the outer seal groove (322) and the edges at the port are all rounded corners.

6. The waterproof wall bushing structure with the flexible dynamic seal assembly on the neutral surface as claimed in claim 1 or 2, wherein the inner seal ring (30) and the outer seal ring (31) have the same specification.

7. The waterproof wall bushing structure with the neutral surface provided with the flexible dynamic sealing assembly according to the claim 1, the neutral surface provided with the flexible dynamic sealing assembly is characterized in that the inner sealing ring (30) and the outer sealing ring (31) are arranged in pairs.

8. The waterproof wall bushing structure with the flexible dynamic seal assembly on the neutral surface as claimed in claim 1 or 2, wherein the middle wing ring plate (22) of the wall bushing (2) is pre-embedded in the wall body (01), and the outer end surfaces of the upstream end wing ring plate (231) and the downstream end wing ring plate (232) are in the same plane with the surface of the wall body (01); preferably, the upstream end wing ring plate (231) of the wall bushing (2) is tightly attached to the upstream end baffle (331) and fixed by welding, and the downstream end wing ring plate (232) of the wall bushing (2) is tightly attached to the downstream end baffle (332) and is locked and fixed by the bolt group (4).

9. A method of constructing a water-resistant wall bushing structure according to any one of claims 1 to 8, comprising the steps of:

10. The construction method of the waterproof wall bushing structure according to claim 9, wherein in the first step, before embedding the wall bushing (2), the method further comprises the following steps: