CN117450347A - Chemical industry is with compound ABR pipe and sealing connection structure thereof - Google Patents
Chemical industry is with compound ABR pipe and sealing connection structure thereof Download PDFInfo
- Publication number
- CN117450347A CN117450347A CN202311733799.0A CN202311733799A CN117450347A CN 117450347 A CN117450347 A CN 117450347A CN 202311733799 A CN202311733799 A CN 202311733799A CN 117450347 A CN117450347 A CN 117450347A
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- Prior art keywords
- connecting pipe
- boss
- pipe
- flexible
- ring
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 150000001875 compounds Chemical class 0.000 title claims abstract description 6
- 239000000126 substance Substances 0.000 title claims description 17
- 239000000945 filler Substances 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 36
- 239000010410 layer Substances 0.000 claims description 19
- 230000007797 corrosion Effects 0.000 claims description 13
- 238000005260 corrosion Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 description 22
- 230000000694 effects Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- -1 acrylic ester Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011365 complex material Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/18—Adjustable joints; Joints allowing movement
-
- 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
- F16L17/00—Joints with packing adapted to sealing by fluid pressure
- F16L17/10—Joints with packing adapted to sealing by fluid pressure the packing being sealed by the pressure of a fluid other than the fluid in or surrounding the pipe
-
- 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
- F16L27/00—Adjustable joints, Joints allowing movement
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/04—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with a swivel nut or collar engaging the pipe
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/184—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
-
- 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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Joints Allowing Movement (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The invention belongs to the technical field of pipeline connection sealing structures, and particularly relates to a chemical compound ABR pipe and a sealing connection structure thereof.
Description
Technical Field
The invention belongs to the technical field of pipeline connection sealing structures, and particularly relates to a chemical composite ABR pipe and a sealing connection structure thereof.
Background
The utility model provides a water supply is with acrylic ester blending polyvinyl chloride tubular product and pipe fitting (Pipes and fittings made of acrylate polymer blended with poly resin for water supply, ABR pipe for short) is a novel product, has excellent characteristics such as high pressure resistant, low temperature resistant and external load height, is applicable to city water supply network and long-distance water transmission and transfer engineering, and in the water transmission pipe network construction process, the connection between pipe fitting and the pipe fitting generally uses the flange to fix, and the flange generally is the pair use to fix through multiunit bolt and nut, but flange joint is a rigid connection simultaneously, and the pipe fitting can no longer receive external force after the installation is fixed, otherwise can lead to the junction unstable, and sealing performance reduces, thereby leads to the material leakage of carrying, causes unnecessary loss.
In order to solve the technical problems, china patent discloses a pipeline sealing connection structure (patent publication No. CN 106678464B), which comprises an annular notch at the inner edge of the end part of a first connecting pipeline, a first annular flange, an arc-shaped annular bulge extending out of the head part of a second connecting pipeline, a second annular flange and a plurality of groups of elastic bolt connecting pieces, wherein the annular notch corresponds to the arc-shaped annular bulge and is matched in shape, an annular groove is formed in the middle part of the first annular flange, the side groove wall of the annular groove is a first annular inclined wall deviating from the axial direction, a third annular flange protruding towards the end surface of the second connecting pipeline is arranged in the middle part of the second annular flange, the third annular flange is matched with the annular groove, a second annular inclined wall corresponding to the first annular inclined wall is arranged, and the outer edge of the first annular flange and the outer edge of the second annular flange are axially tensioned and connected through the plurality of groups of elastic bolt connecting pieces, so that the first connecting pipeline and the second connecting pipeline deviate from a certain angle relatively, and hard damage to the connecting position is prevented.
According to the technical scheme, although the axial distance between two connecting pipelines can be adjusted during installation, one end of the sealing ring between the first connecting pipe and the second connecting pipe is directly exposed to the inner side of the pipeline, when corrosive chemical liquid is conveyed in the pipeline, the liquid can permeate into and corrode the sealing ring through a gap between the first connecting pipe and the second connecting pipe, so that the tightness between the pipelines can be influenced for a long time, and when the central axes of the two pipelines are not coaxial, the joint of the two pipelines and the stress of the flexible filler are unbalanced, so that materials in the pipeline leak or the liquid outside the pipeline infiltrates, and the sealing ring can be corroded and the sealing effect is influenced.
Disclosure of Invention
In view of the above, the invention aims to provide a chemical composite ABR pipe and a sealing connection structure thereof, which are used for solving the problems that a sealing ring at a pipeline connection part in the prior art is easy to be corroded by chemical materials in a pipeline and liquid outside the pipeline, and the conveyed materials leak after a long time.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a compound ABR pipe for chemical industry and a sealing connection structure thereof comprise a first connecting pipe, a second connecting pipe and a sealing ring arranged between the end surfaces of the first connecting pipe and the second connecting pipe; the inner ring of the sealing ring is provided with annular first flexible filler, and the outer ring of the sealing ring is provided with annular second flexible filler; the inner wall of the first connecting pipe is provided with a first boss coaxial with the first connecting pipe; the inner wall of the second connecting pipe is provided with a second boss coaxial with the second connecting pipe; a gap is reserved between the first boss and the second boss; elastic connecting pieces for connecting the first connecting pipe and the second connecting pipe are arranged between the outer surfaces of the first connecting pipe and the second connecting pipe, and when the elastic connecting pieces connect the first connecting pipe and the second connecting pipe, the elastic connecting pieces extrude the first flexible filler, and the first boss and the second boss jointly extrude the second flexible filler.
Further, annular first air bags are arranged in the first flexible filler and the second flexible filler; a plurality of annular second air bags are also arranged in the sealing ring, and the plurality of second air bags are coaxial and are arranged at intervals in a plane; the first air bag and the second air bag are communicated with each other.
Further, the end face, close to the second boss, of the first boss is provided with a coaxially arranged flexible connecting pipe in a penetrating way; the end face of the second boss is provided with a notch matched with the free end of the flexible connecting pipe; and a limiting piece used for fixing the flexible connecting pipe is further arranged in the second boss, and when the first connecting pipe is connected with the second connecting pipe, one end of the flexible connecting pipe stretches into the notch and is clamped with the limiting piece.
Further, the elastic connecting piece comprises a connecting sleeve, a fixing ring and a connecting block; the connecting sleeve is sleeved and fixed on the surface of the first connecting pipe, and a gap exists between the connecting sleeve and the outer surface of the first connecting pipe and is used for placing the second flexible filler; the connecting block is movably arranged on the surface of the second connecting pipe, and a plurality of abutting blocks for abutting the fixing ring are elastically arranged on the surface of the connecting block in a penetrating manner; the fixing ring is fixed on the surface of the second connecting pipe and is arranged between the connecting sleeve and the connecting block; the connecting block is also sleeved on the surface of the connecting sleeve, and the connecting sleeve is in threaded connection with the connecting block.
Further, the first connecting pipe and the second connecting pipe are sequentially made of a corrosion-resistant material layer, an ABR pipe layer, an adhesive layer and a metal pipe layer from inside to outside, and the corrosion-resistant material layer can be compounded with the ABR pipe layer; the first boss, the second boss and the flexible connecting pipe are all made of corrosion-resistant materials.
The invention has the beneficial effects that:
1. according to the invention, through the matching of the components such as the elastic connecting piece, the sealing ring, the first flexible filler, the second flexible filler, the first boss, the second boss and the like, the sealing effect of the joint of the first connecting pipe and the second connecting pipe is enhanced, the direct contact between the conveying material in the pipe and the sealing ring is blocked through the flexible connecting pipe, the probability of corrosion of the sealing ring by chemical materials is reduced, the sealing effect of the sealing ring is ensured, and the sealing performance between the two pipelines is not influenced when the first connecting pipeline and the second connecting pipeline which are connected through the elastic connecting piece deflect, so that the practicability and the flexibility of the invention are greatly improved.
2. The elastic connection piece passes through connecting sleeve and connecting block threaded connection's mode and connects first connecting pipe, second connecting pipe, compares in flange and bolt thread's connection, and this scheme can make first connecting pipe, second connecting pipe atress more even in the connection process, and the operation is also convenient and fast more to the connecting block still effectively covers the second flexible filler, prevents that second flexible filler and outside direct contact, has increased its life, has guaranteed the sealing stability of two pipe joints.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:
FIG. 1 is a schematic diagram of the connection of a first connection pipe and a second connection pipe according to the present invention;
FIG. 2 is a cross-sectional view of a first connecting tube and a second connecting tube according to the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
FIG. 4 is an enlarged schematic view of FIG. 3B;
FIG. 5 is a schematic diagram of the structure of the first connecting tube and the second connecting tube in mutual deflection according to the present invention;
FIG. 6 is an enlarged schematic view of FIG. 5 at C;
FIG. 7 is a cross-sectional view of a first connecting tube and a second connecting tube according to a second embodiment of the invention;
fig. 8 is an enlarged schematic view of fig. 7 at D.
The figures are marked as follows:
1 first connecting pipe, 2 second connecting pipe, 3 sealing washer, 4 first flexible packing, 5 second flexible packing, 6 first bulge loop, 7 second bulge loop, 8 first boss, 9 second boss, 10 standing groove, 11 elastic connection spare, 1101 connecting sleeve, 1102 solid fixed ring, 1103 connecting block, 12 first gasbag, 13 second gasbag, 14 flexible connecting pipe, 15 butt piece, 16 first ring flange, 17 second ring flange.
Detailed Description
Embodiment one:
as shown in figures 1-6 of the drawings,
the compound ABR pipe for chemical industry and a sealing connection structure thereof comprise a first connecting pipe 1, a second connecting pipe 2 and a sealing ring 3 arranged between the end surfaces of the first connecting pipe 1 and the second connecting pipe 2; the inner ring of the sealing ring 3 is integrally formed with a first annular flexible filler 4; the outer ring of the sealing ring 3 is integrally formed with a second annular flexible filler 5; the end face, close to the second connecting pipe 2, of the first connecting pipe 1 is coaxially provided with a first convex ring 6; the end face, close to the first connecting pipe 1, of the second connecting pipe 2 is coaxially provided with two second convex rings 7, and the first convex ring 6 is positioned between the two second convex rings 7; the first convex ring 6 and the second convex ring 7 jointly clamp and abut against the sealing ring 3; the inner wall of the first connecting pipe 1 is integrally formed with a first annular boss 8, and the inner wall of the second connecting pipe 2 is integrally formed with a second annular boss 9; gaps are reserved between the first boss 8 and the second boss 9, and a placing groove 10 for placing the first flexible filler 4 is formed in the surface of the opposite side; elastic connecting pieces 11 for connecting the first connecting pipe 1 and the second connecting pipe 2 are arranged between the outer surfaces of the first connecting pipe 1 and the second connecting pipe 2, and when the first connecting pipe 1 and the second connecting pipe 2 are connected with each other under the action of the elastic connecting pieces 11, the elastic connecting pieces 11 extrude the first flexible filler 4, and the first boss 8 and the second boss 9 jointly extrude the second flexible filler 5.
In combination with the illustration, in the scheme, a first convex ring 6 and a second convex ring 7 are arranged for further improving the sealing effect of the sealing ring 3; the end surfaces of the first boss 8 and the second boss 9 are respectively provided with a placing groove 10 for placing the first flexible filler 4, so that the first flexible filler 4 can be abutted against the periphery and the sealing performance is improved, and the conveyed materials are prevented from penetrating into the joint between two pipelines (the first connecting pipe 1 and the second connecting pipe 2 are short for short and consistent hereinafter) and corroding the sealing ring 3; when the first connecting pipe 1 and the second connecting pipe 2 are required to be connected, firstly, the sealing ring 3 is placed on the end face of the first connecting pipe 1, which is close to the second connecting pipe 2, at the moment, a part of the surface of the first flexible packing 4 is positioned in the corresponding placing groove 10, a part of the surface of the second flexible packing 5 is elastically connected with the inner side of the connecting piece 11, then the second connecting pipe 2 is connected with the first connecting pipe 1 through the elastic connecting piece 11, and in the process of connecting and approaching the first connecting pipe 1 and the second connecting pipe 2, the first convex ring 6 and the second convex ring 7 can simultaneously abut against and press the surface of the sealing ring 3, so that the cross section of the clamped sealing ring 3 is provided with a plurality of corners, the surface of the sealing ring 3 is guaranteed to be tightly attached to the surrounding surface, gaps are reduced, and the sealing property between two pipelines is effectively improved; the in-process that is being connected through elastic connection spare 11 is first connecting pipe 1, second connecting pipe 2, be annular first boss 8 and second boss 9 can be close to each other and extrude first flexible packing 4, make first flexible packing 4 take place deformation and make its outer surface support the inner wall of two standing grooves 10, combine the fig. 3, shown in fig. 4, the position after first flexible packing 4 is supported tightly can cover the seam crossing of first connecting pipe 1 and second connecting pipe 2 just, can prevent the material direct contact sealing washer 3 of pipeline interior transport, the risk of sealing washer 3 by the material corruption has been reduced, the stability of sealing washer 3 work has been guaranteed, and, elastic connection spare 11 also can support tightly and extrude second flexible packing 5, make second flexible packing 5 also take place deformation and cover the seam crossing in the outside of first connecting pipe 1 and second connecting pipe 2 completely, can prevent outside liquid infiltration and corrode sealing washer 3, further guaranteed the stability of sealing washer 3 operational environment, the life of sealing washer 3 has been improved, even first connecting pipe 1, second connecting pipe 2 is in the junction of connecting in the pipeline or after connecting in the pipeline completion or at the joint line time of two axial lines, the two axial lines of two are connected together at the time of the pipeline 5 is still can not guaranteeing the flexible packing 5, the life-span is prolonged at the same place of the flexible packing of the pipeline joint between the two axial lines of two axial lines and the two flexible packing 3, the flexible packing is guaranteed, the life is guaranteed in the flexible packing 5 is guaranteed to the outside the joint of the flexible packing 5 is also deformed to be taken place to take place.
In this embodiment, the first flexible filler 4 and the second flexible filler 5 are both provided with annular first air bags 12 inside; a plurality of annular second air bags 13 are also arranged inside the sealing ring 3, and the plurality of second air bags 13 (only 3 second air bags 13 are shown in the figure) are coaxial and are arranged at intervals in a plane; the first air bag 12 and the second air bag 13 are communicated with each other.
When the central axes of the first connecting pipe 1 and the second connecting pipe 2 are not on the same straight line, for example, as shown in fig. 5 and 6, the deflection angle between the two pipelines is alpha, and the stress conditions of the sealing ring 3, the first flexible packing 4 and the second flexible packing 5 at different positions are different, if the pressure ratio of the materials conveyed in the pipes is larger, the materials conveyed in the pipes possibly permeate into the weak places and then reach the sealing ring 3, the materials gradually corrode the sealing ring 3 in the long term and leak out from the weak places between the first connecting pipe 1 and the second connecting pipe 2, so that the first air bag 12 and the second air bag 13 are arranged in the first flexible packing 4 and the second flexible packing 5, the first air bag 12 and the second air bag 13 are communicated with each other and kept at a certain air pressure, and when the first connecting pipe 1 and the second connecting pipe 2 are connected under the action of the elastic connecting piece 11, the end faces of the first convex ring 6, the second convex ring 7 and the two pipelines can simultaneously abut against and squeeze the sealing ring 3 and the second air bag 13, and when the first air bag 8, the second air bag 9 and the elastic connecting piece 3 abut against the first air bag 3 and the second air bag 3, and the flexible packing 3 further expand the surfaces and the first air bag 3 and the second air bag 4; when the central axes of the first connecting pipe 1 and the second connecting pipe 2 are not coaxial, the position with larger stress at the joint of the two pipelines can further extrude the first air bag 12 or the second air bag 13, and the gas in the position moves to the position with smaller stress, so that the first air bag 12 or the second air bag 13 at the position with smaller pressure is expanded and extruded all around, and the sealing ring 3, the first flexible filler 4 and the second flexible filler 5 have certain toughness and ductility, so that the outer surfaces of the expanded first air bag 12 and second air bag 13 are clung to all around and prevent materials from leaking, the sealing condition of the position is ensured, and the sealing performance between the first connecting pipe 1 pipeline and the second connecting pipe 2 is improved.
In this embodiment, the end surface of the first boss 8, which is close to the second boss 9, is elastically penetrated with a coaxially arranged flexible connecting pipe 14; the end face of the second boss 9 is provided with a notch matched with the flexible connecting pipe 14; and a limiting piece for fixing the flexible connecting pipe 14 is further arranged in the second boss 9, and when one end of the flexible connecting pipe 14 is positioned in the notch and is clamped with the limiting piece, the flexible connecting pipe 14 just covers a gap between the first boss 8 and the second boss 9.
The flexible connecting pipe 14 adopts a metal corrugated pipe in the embodiment, a spring is arranged between one end of the flexible connecting pipe 14 and the inside of the first boss 8, one end of the flexible connecting pipe 14 passes through the first boss 8 in an elastic sliding way through the spring, a limiting piece passes through the second boss 9 in an elastic way along the vertical direction, and a limiting groove matched with the limiting piece is formed in one end, close to the second boss 9, of the flexible connecting pipe 14; because the first connecting pipe 1 and the second connecting pipe 2 are connected by adopting elastic connecting pieces, the central axes between the two pipelines can not be on the same straight line, a movable gap is required to be reserved between the first boss 8 and the second boss 9, but the gap can enable the first flexible filler 4 to be in direct contact with materials conveyed in the pipelines, so that the surface of the first flexible filler 4 can be worn and corroded when conveyed materials flow, the flexible connecting pipe 14 is arranged at the gap between the first boss 8 and the second boss 9, when the first connecting pipe 1 and the second connecting pipe 2 are connected under the action of the elastic connecting piece 11, the flexible connecting pipe 14 extends out of the first boss 8 under the action of a spring, one end of the flexible connecting pipe 14 just stretches into a notch, a limiting piece in the second boss 9 and a limiting groove are mutually clamped and fixed, the flexible connecting pipe 14 is prevented from falling off under the impact of conveyed materials, the surface of the flexible connecting pipe 14 can cover the gap between the first boss 8 and the second boss 9, the conveyed materials are prevented from being in direct contact with the surface of the first flexible filler 4, and the sealing effect between the two flexible pipelines is improved; in addition, for conveying materials, the pressure in the two pipelines must be large enough, the surfaces of the flexible connecting pipes 14 at the gaps between the first bosses 8 and the second bosses 9 deform under the impact of the materials, and the surfaces of the flexible connecting pipes 14 are clung to the surfaces of the first bosses 8 and the second bosses 9 in combination with the illustration shown in fig. 4, so that the probability of the materials penetrating into the joints of the two pipelines can be further reduced, and the tightness is ensured; the flexible connecting pipe 14 can generate corresponding deformation under the condition that the first connecting pipe 1 and the second connecting pipe 2 deflect mutually, can meet the connection requirements of the first boss 8 and the second boss 9 in different positions, can always cover the gap between the first boss 8 and the second boss 9, and ensures the sealing efficiency between two pipelines.
In this embodiment, the elastic connection member 11 includes a connection sleeve 1101, a fixing ring 1102, and a connection block 1103; the connecting sleeve 1101 is sleeved and fixed on the surface of the first connecting pipe 1, and a gap exists between the connecting sleeve 1101 and the outer surface of the first connecting pipe 1 and is used for placing the second flexible filler 5; the connection block 1103 is movably disposed on the surface of the second connection pipe 2, and a plurality of abutting blocks 15 for abutting against the fixing ring 1102 are elastically arranged on the surface of the connection block 1103; the plurality of abutting blocks 15 are circumferentially arranged at intervals around the connecting block 1103; the fixing ring 1102 is fixed on the surface of the second connecting pipe 2, and the fixing ring 1102 is arranged between the connecting sleeve 1101 and the connecting block 1103; the connecting block 1103 is further sleeved on the surface of the connecting sleeve 1101, and the connecting sleeve 1101 is in threaded connection with the connecting block 1103.
In the scheme, a spring is arranged between the abutting block 15 and the connecting block 1103, so that the abutting block 15 can be elastically penetrated on the surface of the connecting block 1103; as shown in fig. 3, the cross sections of the connecting block 1103 and the connecting sleeve 1101 are L-shaped, when the end surfaces of the first connecting pipe 1 and the second connecting pipe 2 are close to each other and are connected, the connecting block 1103 is rotated and is in threaded connection with the outer surface of the connecting sleeve 1101, the abutting block 15 on the inner side of the connecting block 1103 abuts against the fixed ring 1102 and drives the second connecting pipe 2 to move towards the first connecting pipe 1, the end surface of the fixed ring 1102 abuts against and presses the second flexible filler 5 while approaching the connecting sleeve 1101, when the connecting block 1103 rotates for a certain number of turns, a gap exists between the fixed ring 1102 and the connecting sleeve 1101 and the connecting block 1103, the fixed ring 1102 abuts against the second flexible filler 5 under the action of the abutting block 15, the first convex ring 6 and the second convex ring 7 abut against and press the sealing ring 3, the first convex table 8 and the second convex table 9 abut against and press the first flexible filler 4 at the same time, so that the sealing performance between two pipelines is improved, and the risk of external liquid penetrating into the joint between the two pipelines is prevented; when the axis of the second connecting tube 2 deflects an angle α upwards relative to the axis of the first connecting tube 1, as shown in fig. 5 and 6, the second connecting tube 2 synchronously drives the fixing ring 1102, the second convex ring 7 and the second boss 9 to generate corresponding displacement, at this time, the plurality of abutting blocks 15 still abut against the surface of the fixing ring 1102 under the action of the spring, the upper half part of the fixing ring 1102 is close to the connecting sleeve 1101 and further presses the second flexible packing 5 (only the upper half part of each component changes in the drawing), the sealing ring 3 also generates corresponding deformation in the pressing process, and the gas pressed inside the first air bag 12 or the second air bag 13 moves to other places with smaller pressure, so that the other first air bags 12 or the second air bags 13 which are not pressed further expand, the sealing ring 3 and the first flexible packing 4 can be tightly attached to the surrounding surfaces at any time, the sealing performance of the sealing ring is not affected by the deflection of the first connecting tube 1 and the second connecting tube 2, the purpose of self dynamic adjustment can be realized, and the leakage of materials is effectively prevented.
In this embodiment, the first connection pipe 1 and the second connection pipe 2 are sequentially made of a corrosion-resistant material layer, an ABR pipe layer, an adhesive layer and a metal pipe layer from inside to outside, and the corrosion-resistant material layer may be compounded with the ABR pipe layer; the first boss 8, the second boss 9 and the flexible connecting pipe 14 are made of corrosion-resistant materials.
In this scheme, corrosion resistant material layer can adopt polyurethane, polyvinyl chloride etc. can with ABR pipe layer complex material, can improve the pipeline inner wall to the corrosion resistance of chemical material, guarantee the conveying efficiency of material, improve life, and first boss 8, second boss 9 also can adopt corrosion resistant material such as polyvinyl chloride to make, flexible connecting pipe 14 can adopt the stainless steel to make, can prevent that the chemical material of carrying from corroding first boss 8, second boss 9 and the flexible connecting pipe 14 that are located the junction, prevent that chemical material infiltration from two junction between the pipeline and corroding sealing washer 3, guaranteed the sealed effect of junction.
Embodiment two:
the second embodiment is different from the first embodiment in that the elastic connecting member 11 includes a first flange 16, a second flange 17, and a fixing ring 1102; the first flange 16 is welded on the outer surface of the metal pipe layer of the first connecting pipe 1, and a gap exists between the first flange 16 and the outer surface of the first connecting pipe 1 and is used for placing the second flexible filler 5; the second flange 17 is movably arranged on the surface of the second connecting pipe 2, and a plurality of abutting blocks 15 for abutting the fixing ring 1102 are elastically arranged on the surface of the second flange 17 in a penetrating manner; the plurality of abutting blocks 15 are circumferentially arranged at intervals around the second flange 17; the fixing ring 1102 is welded on the outer surface of the metal pipe layer of the second connecting pipe 2, and the fixing ring 1102 is arranged between the first flange 16 and the second flange 17; the first flange 16 and the second flange 17 of the screw are fixedly connected through bolts and nuts.
As shown in fig. 7 and 8, the first flange 16 and the second flange 17 are in special-shaped structures, and the two pipelines are connected through the first flange 16 and the second flange 17, compared with the first embodiment, the method is mature in technology, low in cost and simple in construction process, and as the sealing rings 3 and the second air bags 13 are arranged between the end faces of the first connecting pipe 1 and the second connecting pipe 2, nuts at different positions can be screwed respectively when the first flange 16 and the second flange 17 are fixedly connected through bolts and nuts, and the nuts do not need to be screwed synchronously (the first connecting pipe 1 and the second connecting pipe 2 can deflect within a certain range); the first flange 16 and the second flange 17 are adopted to connect two pipelines, and the tightness of the two pipelines after deflection is not affected.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (5)
1. A compound ABR pipe for chemical industry and a sealing connection structure thereof comprise a first connecting pipe, a second connecting pipe and a sealing ring arranged between the end surfaces of the first connecting pipe and the second connecting pipe; the method is characterized in that: the inner ring of the sealing ring is provided with annular first flexible filler, and the outer ring of the sealing ring is provided with annular second flexible filler; the inner wall of the first connecting pipe is provided with a first boss coaxial with the first connecting pipe; the inner wall of the second connecting pipe is provided with a second boss coaxial with the second connecting pipe; a gap is reserved between the first boss and the second boss; elastic connecting pieces for connecting the first connecting pipe and the second connecting pipe are arranged between the outer surfaces of the first connecting pipe and the second connecting pipe, and when the elastic connecting pieces connect the first connecting pipe and the second connecting pipe, the elastic connecting pieces extrude the first flexible filler, and the first boss and the second boss jointly extrude the second flexible filler.
2. The chemical composite ABR tube and the sealing connection structure thereof according to claim 1, wherein: annular first air bags are arranged in the first flexible filler and the second flexible filler; a plurality of annular second air bags are also arranged in the sealing ring, and the plurality of second air bags are coaxial and are arranged at intervals in a plane; the first air bag and the second air bag are communicated with each other.
3. The chemical composite ABR tube and the sealing connection structure thereof according to claim 2, wherein: the end face, close to the second boss, of the first boss is provided with a coaxially arranged flexible connecting pipe in a penetrating way; the end face of the second boss is provided with a notch matched with the free end of the flexible connecting pipe; and a limiting piece used for fixing the flexible connecting pipe is further arranged in the second boss, and when the first connecting pipe is connected with the second connecting pipe, one end of the flexible connecting pipe stretches into the notch and is clamped with the limiting piece.
4. A composite ABR tube for chemical industry and a sealing connection structure thereof according to claim 3, wherein: the elastic connecting piece comprises a connecting sleeve, a fixing ring and a connecting block; the connecting sleeve is sleeved and fixed on the surface of the first connecting pipe, and a gap exists between the connecting sleeve and the outer surface of the first connecting pipe and is used for placing the second flexible filler; the connecting block is movably arranged on the surface of the second connecting pipe, and a plurality of abutting blocks for abutting the fixing ring are elastically arranged on the surface of the connecting block in a penetrating manner; the fixing ring is fixed on the surface of the second connecting pipe and is arranged between the connecting sleeve and the connecting block; the connecting block is also sleeved on the surface of the connecting sleeve, and the connecting sleeve is in threaded connection with the connecting block.
5. The chemical composite ABR tube and the sealing connection structure thereof according to claim 4, wherein: the first connecting pipe and the second connecting pipe are sequentially made of a corrosion-resistant material layer, an ABR pipe layer, an adhesive layer and a metal pipe layer from inside to outside, and the corrosion-resistant material layer can be compounded with the ABR pipe layer; the first boss, the second boss and the flexible connecting pipe are all made of corrosion-resistant materials.
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| CN202311733799.0A CN117450347B (en) | 2023-12-18 | 2023-12-18 | Chemical industry is with compound ABR pipe and sealing connection structure thereof |
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| CN202311733799.0A CN117450347B (en) | 2023-12-18 | 2023-12-18 | Chemical industry is with compound ABR pipe and sealing connection structure thereof |
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Cited By (1)
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| CN118030995A (en) * | 2024-04-08 | 2024-05-14 | 山东道成泰和智能科技有限公司 | Fire control gas line connecting piece |
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| Publication number | Publication date |
|---|---|
| CN117450347B (en) | 2024-03-19 |
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