CN113738971B

CN113738971B - Assembled honeycomb duct

Info

Publication number: CN113738971B
Application number: CN202110875184.6A
Authority: CN
Inventors: 鄢仁成; 赵馨; 金鹏程; 沈振锁
Original assignee: Zhejiang Shanxi Water Resources And Hydropower Development Co ltd
Current assignee: Zhejiang Shanxi Water Resources And Hydropower Development Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2023-06-09
Anticipated expiration: 2041-07-30
Also published as: CN113738971A

Abstract

The invention relates to an assembled honeycomb duct which comprises a duct body, wherein the duct body is detachably connected with a cofferdam, and damping sealing devices are arranged at two ends of the duct body. The traditional steel sheet pile aqueduct cofferdam is usually fixed with the guide pipe and the cofferdam in a welding mode, after construction is completed, the guide pipe needs to be cut and dismantled, and the dismantled guide pipe can only be used as scrap iron for treatment.

Description

Assembled honeycomb duct

Technical Field

The invention relates to an assembled honeycomb duct.

Background

In hydraulic engineering construction, the cofferdam is a constructed temporary enclosing structure. Its function is to prevent water and earth from entering the building site for drainage in the cofferdam. The aqueduct is a hydraulic engineering used for conveying channel water to flow across channels, stream valleys, depressions and roads, ageing and damage occur in the use process of the aqueduct, construction is carried out on the channel walls and the base plate foundation, water supply interruption can be caused when the full-section cofferdam is adopted for intercepting construction, in order to reduce water supply influence, in the small-sized aqueduct, in order to facilitate transportation and construction, a fixed-length guide pipe is usually transported to a preset place for welding, and the guide pipe are welded and fixed, and then the guide pipe and the guide pipe are integrally adjusted into the aqueduct for intercepting operation.

Disclosure of Invention

The invention aims to provide an assembled honeycomb duct.

The inventor finds that in the construction of the existing aqueduct diversion pipe, a plurality of diversion steel pipes are welded into one diversion pipe, and then welded with steel plates of upstream and downstream cofferdams to form a whole for hoisting without adopting assembly construction. The river water flow is not intercepted yet, and the assembling difficulty of the guide pipe and the cofferdam in water is very high. The lifting is carried out after the whole assembly on the shore, the weight of the diversion pipe and the cofferdam is large, the weight of the diversion pipe and the cofferdam is usually tens of tons, the whole strength of the joint formed by the assembly is inferior to that of welding, the joint is required to be provided with a sealing ring to prevent leakage, the relative displacement between the joints is tiny in the lifting process, the instantaneous acting force is extremely large, the sealing ring is easy to shift or damage, the reworking is required, and the construction period is prolonged.

Therefore, the assembled honeycomb duct comprises a duct body, wherein the duct body is detachably connected with the cofferdam, and shock absorption sealing devices are arranged at two ends of the duct body.

Further, the inner wall of the end of the pipe body is provided with a convex ring protruding towards the central line of the pipe body, the shock absorption sealing device is sleeved on the inner wall of the end of the pipe body, one end of the shock absorption sealing device is matched with the convex ring, the other end of the shock absorption sealing device is matched with the connector, the connector comprises a sleeve, the sleeve can be sleeved in the inner wall of the end of the pipe body and is preloaded on the shock absorption sealing device, and the connector is connected with the end of the pipe body through a flange.

Further, the damping sealing device comprises elastic backing rings arranged at two ends, metal rings arranged at the inner sides of the elastic backing rings and springs with two ends fixed with the metal rings respectively.

Further, the damping sealing device further comprises an elastic tube, two ends of the elastic tube are respectively fixed with the end faces of the metal rings, and the springs are arranged in annular grooves of the elastic tube.

Further, the pipe body end and the connector are fixed with the flange, the flange is connected through bolts, a groove is formed in the opposite side of the flange, an elastic pad is arranged in the groove, and a gap with a certain distance is reserved between the disc surfaces of the flange.

Further, the honeycomb duct comprises a telescopic corrugated steel pipe.

Further, the first end of the pipe body, which is positioned at the upstream of the water flow direction, is connected with the arranged slide-resistant pile.

Further, be equipped with the connection piece of anti-slide pile on the body, the connection piece is including hanging the lamellar body on the body and lamellar body both sides are used for connecting lug and the ear hole that anti-slide pile passed, anti-slide pile top is equipped with fixed cover, fixed cover is used for fixing connection piece and anti-slide pile after putting into the ground with anti-slide pile.

Further, an anti-slip groove is formed in the sheet body, and an anti-slip ring matched with the anti-slip groove is arranged on the pipe body.

The beneficial effects of the invention are as follows:

(1) In the invention, the leakage prevention is realized by arranging the shock absorption sealing device at the end connection position of the flow guide pipe, and in the special embodiment of the invention, the shock absorption sealing device comprises an elastic backing ring arranged at two ends, a metal ring arranged at the inner side of the elastic backing ring and a spring with two ends respectively fixed with the metal ring. When the joint of the honeycomb duct generates relative acting force or displacement, the relative displacement is generally tiny, but the acting force is huge, and the metal ring applies an acting force on the elastic pad in advance, so that the elastic pad is tightly matched with the convex ring and the sleeve to avoid leakage, and meanwhile, when the joint generates displacement, the spring, namely the elastic pad, is rapidly deformed, so that the impact is slowed down, and the elastic pad is prevented from being displaced and damaged.

(2) Because the guide pipe is detachably connected with the cofferdam steel plate, the guide pipe receives the acting force in the same direction as the water flow, and the guide pipe joint is continuously impacted by the water flow stress.

Drawings

FIG. 1 is a schematic diagram of a specific embodiment of the present invention;

FIG. 2 is a schematic illustration of a cofferdam steel plate and draft tube connection in accordance with certain embodiments of the present invention;

FIG. 3 is a schematic illustration of adjacent pipe connections;

FIG. 4 is a schematic cross-sectional view of a shock absorbing seal;

FIG. 5 is a schematic view of the flange and spring pad of FIG. 2;

FIG. 6 is a schematic view of a slide stud and a connection tab;

FIG. 7 is a schematic cross-sectional view of an anti-slip slot of the connection tab;

FIG. 8 is a schematic cross-sectional view of the flange and resilient pad of FIG. 2;

fig. 9 is a schematic view of a bellows joint.

Reference numerals illustrate: 1. a tube body; 101. an end head; 102. a flow passage; 103. corrugated steel pipe; 104. a first end; 105. an anti-slip ring; 2. a cofferdam; 201. a steel plate; 202. a fixed tube; 3. a convex ring; 4. a shock absorbing sealing device; 401. an elastic backing ring; 402. a metal ring; 403. a spring; 404. an elastic tube; 405. an annular groove; 5. a connector; 501. a sleeve; 6. a flange plate; 601. a screw hole; 602. a groove; 603. an elastic pad; 7. an anti-slide pile; 8. a connecting sheet; 801. a sheet body; 802. a connecting lug; 803. ear holes; 804. a fixed sleeve; 805. and (3) an anti-sliding groove.

Detailed Description

In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1 and 2, an assembled honeycomb duct according to a specific embodiment of the present invention includes a duct body 1, the duct body 1 is detachably connected to a cofferdam 2, and shock absorbing sealing devices 4 are disposed at two ends of the duct body 1.

Referring to fig. 2, the inner wall of the end 101 of the pipe body 1 and the fixing pipe 202 connected to the cofferdam steel plate 201 are provided with a convex ring 3 protruding toward the center line of the pipe, the convex ring 3 can be integrally formed with the pipe body 1 or the fixing pipe 202, the shock absorbing sealing device 4 is annularly sleeved on the inner wall of the pipe body end 101, one end of the shock absorbing sealing device 4 is matched with the convex ring 3, the other end of the shock absorbing sealing device 4 is matched with the connector 5, the connector 5 comprises a sleeve 501, the sleeve 501 can be sleeved on the inner wall of the pipe body end 101 and the fixing pipe 202 and preloaded on the shock absorbing sealing device 4, the connector 5, the end 101 of the pipe body 1 and the fixing pipe 202 are provided with a flange 6, screw holes 601 are formed in the flange 6, the connector 5, the pipe end 101 and the fixing pipe 202 are fixed through bolts, two ends of the connector 5 can be mirror-symmetrical, in this embodiment, the fixing pipe 202 can be welded on the cofferdam steel plate 201 and communicated with a through hole of the cofferdam steel plate 201, and the through hole or the fixing pipe 202 can be provided with a valve.

In the above embodiment, referring to fig. 3 and 9, the flow guide tube may be formed by detachably combining a plurality of tube bodies, and the connection manner may be performed by the connection manner described above, or in other embodiments, the connection may be performed without using the connector 5, and referring to fig. 9, the sleeve 501 is connected to the flange and fixed on one end of the tube body 1, and the adjacent tube body end 101 mated with the sleeve 501 is provided with the convex ring 3 described above, which may also have the above effects.

In the above embodiment, referring to fig. 2, the shock absorbing sealing device 4 may be an elastic backing ring 401, and the sleeve 501 is preloaded on the elastic backing ring 401, where the elastic backing ring 401 has a certain elastic deformation capability, so that the possibility of damage can be reduced by deformation when the opposite force is applied. As shown in fig. 4, the shock absorbing sealing means 4 may further preferably include elastic backing rings 401 provided at both ends, metal rings 402 provided inside the elastic backing rings 401, and springs 403 having both ends fixed to the metal rings 402, respectively, and the shock absorbing sealing means 4 may be formed in a cylindrical shape as a whole. In this embodiment, the elastic backing ring 401 is optionally fixed to the metal ring 402, the springs 403 are equally spaced on the circumference of the metal ring 402, and two ends of the springs 403 are fixed to the metal rings 402 on two sides respectively. The shock-absorbing sealing device 4 is preloaded on the convex ring 3 by the sleeve 501, the elastic backing rings 401 on two sides are used for sealing and waterproofing, the metal ring 402 and the springs 403 fixed with the metal ring 402 enable the shock-absorbing sealing device 4 to have larger deformation, when external impact is received, the springs 403 deform to reduce the impact of the elastic backing rings 401, so that the elastic backing rings 401 playing a role in sealing are protected from damage and displacement.

In the above embodiment, referring to fig. 4, the shock absorbing sealing device 4 further includes an elastic tube 404, the elastic tube 404 may be made of a rubber material, two ends of the elastic tube 404 are respectively fixed to the end surfaces of the metal ring 402, and the spring 403 is installed in an annular groove 405 of the elastic tube 404. In this embodiment, the elastic tube 404 may be sealed from the flow channel 102 of the tube body 1, preventing water flow or other impurities from entering the spring 403.

In the above embodiment, referring to fig. 2, 5 and 8, the pipe body end 101 and the connector 5 fix the flanges 6, the two opposite flanges 6 are connected by bolts, the opposite sides of the two flanges 6 are provided with grooves 602, the grooves 602 are provided with elastic pads 603, the elastic pads 603 can be made of rubber materials, and a certain distance gap is reserved between the surfaces of the flanges 6. In this embodiment, the elastic pad 603 is used to replace the sealing ring for waterproof sealing, the elastic pad 603 has a certain buffering capacity, when the joint is impacted, the elastic pad 603 can also be replaced by the shock absorbing sealing device 4.

In the above embodiment, referring to fig. 9, the guide pipe includes the telescopic corrugated steel pipe 103, the bearing platform or the supporting frame may be disposed under the joint, the corrugated steel pipe 103 has the shortest length, the longest length and the normal use length, the length of the guide pipe required is different due to different construction sections, the length of each section of pipe body 1 in the reusable guide pipe is fixed, and the corrugated steel pipe 103 is connected so that the guide pipe is adjustable in length to a certain extent, so as to be reused in different construction sections.

In the above embodiment, referring to fig. 1, the first end 104 of the pipe body 1 located at the upstream of the water flow direction is connected with the set anti-slide pile 7, and the conventional pipe bodies are welded and fixed, and the guide pipe and the cofferdam steel plate 201 are also welded and fixed.

In the above embodiment, referring to fig. 1, 6 and 7, a connecting piece 8 of an anti-slide pile 7 is provided on a flow guiding pipe body 1, the connecting piece 8 includes a sheet 801 hung on the pipe body 1, and a connecting lug 802 and an ear hole 803 on two sides of the sheet 801 for the anti-slide pile 7 to pass through, a fixing sleeve 804 is provided above the anti-slide pile 7, the fixing sleeve 804 is used for fixing the connecting piece 8 and the anti-slide pile 7 after the anti-slide pile 7 is placed into the ground, the outer diameter of the fixing sleeve 804 is larger than the diameter of the ear hole 803, and the fixing sleeve 804 can be integrally formed with the anti-slide pile 7, welded and connected, or detachably connected, such as by threaded connection.

In the above embodiment, referring to fig. 1, 6 and 7, the anti-slip groove 805 is provided on the surface of the sheet 801 opposite to the pipe body, and the anti-slip ring 105 engaged with the anti-slip groove 805 is provided on the pipe body 1 of the draft tube. In use, the sheet 801 is suspended from the pipe 1 and the anti-slip ring 105 is inserted into the anti-slip groove 805.

The present invention is not limited to the above embodiments, but is not limited to the above embodiments, and any technical modifications, equivalents and modifications made to the above embodiments according to the technical principles of the present invention can be made by those skilled in the art without departing from the scope of the invention.

Claims

1. The utility model provides an assembled honeycomb duct, includes body, its characterized in that: the utility model provides a pipe body is connected with the cofferdam can be dismantled, the pipe body both ends are equipped with shock attenuation sealing device, shock attenuation sealing device is including establishing the spring washer at both ends, the inboard metal ring of spring washer and both ends respectively with the fixed spring of metal ring, the end inner wall of pipe body is equipped with the bulge loop that is protruding to the pipe body central line, shock attenuation sealing device cup joints at pipe body end inner wall, shock attenuation sealing device one end bulge loop cooperation, the other end and connector cooperation, the connector includes the sleeve pipe, the sleeve pipe can cup joint in pipe body end inner wall and pre-compaction is on shock attenuation sealing device, the flange joint is passed through with the pipe body end to the connector.

2. The fabricated duct of claim 1, wherein: the damping sealing device also comprises an elastic tube, two ends of the elastic tube are respectively fixed with the end faces of the metal rings, and the springs are arranged in annular grooves of the elastic tube.

3. The fabricated duct of claim 1, wherein: the pipe body end and the connector are fixed with the flange plate, the flange plate is connected through bolts, a groove is formed in the opposite side of the flange plate, an elastic pad is arranged in the groove, and a gap with a certain distance is reserved between the disc surfaces of the flange plate.

4. The fabricated duct of claim 1, wherein: the honeycomb duct comprises a telescopic corrugated steel pipe.

5. The fabricated duct of claim 1, wherein: the first end of the pipe body, which is positioned at the upstream of the water flow direction, is connected with the arranged anti-slide pile.

6. The fabricated duct of claim 5, wherein: the anti-slide pile is characterized in that the pipe body is provided with a connecting sheet of the anti-slide pile, the connecting sheet comprises a sheet body hung on the pipe body and connecting lugs and lug holes which are used for the anti-slide pile to penetrate through, a fixing sleeve is arranged above the anti-slide pile, and the fixing sleeve is used for fixing the connecting sheet and the anti-slide pile after the anti-slide pile is placed into the ground.

7. The fabricated duct of claim 6, wherein: the sheet body is provided with an anti-slip groove, and the pipe body is provided with an anti-slip ring matched with the anti-slip groove.